QGIS API Documentation 3.41.0-Master (fda2aa46e9a)
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qgsfillsymbollayer.cpp
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1/***************************************************************************
2 qgsfillsymbollayer.cpp
3 ---------------------
4 begin : November 2009
5 copyright : (C) 2009 by Martin Dobias
6 email : wonder dot sk at gmail dot com
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
16#include "qgsfileutils.h"
17#include "qgsfillsymbollayer.h"
18#include "qgslinesymbollayer.h"
19#include "qgssldexportcontext.h"
20#include "qgssymbollayerutils.h"
21#include "qgsdxfexport.h"
22#include "qgsgeometry.h"
23#include "qgsimagecache.h"
24#include "qgsrendercontext.h"
25#include "qgsproject.h"
26#include "qgssvgcache.h"
27#include "qgscolorramp.h"
28#include "qgscolorrampimpl.h"
29#include "qgsunittypes.h"
30#include "qgsmessagelog.h"
31#include "qgsapplication.h"
32#include "qgsimageoperation.h"
33#include "qgspolygon.h"
34#include "qgslinestring.h"
36#include "qgssymbol.h"
37#include "qgsmarkersymbol.h"
38#include "qgslinesymbol.h"
39#include "qgsfeedback.h"
40#include "qgsgeometryengine.h"
41#include "qgscolorutils.h"
42
43#include <QPainter>
44#include <QPagedPaintDevice>
45#include <QFile>
46#include <QSvgRenderer>
47#include <QDomDocument>
48#include <QDomElement>
49#include <QtMath>
50#include <random>
51
52
53QgsSimpleFillSymbolLayer::QgsSimpleFillSymbolLayer( const QColor &color, Qt::BrushStyle style, const QColor &strokeColor, Qt::PenStyle strokeStyle, double strokeWidth,
54 Qt::PenJoinStyle penJoinStyle )
55 : mBrushStyle( style )
56 , mStrokeColor( strokeColor )
57 , mStrokeStyle( strokeStyle )
58 , mStrokeWidth( strokeWidth )
59 , mPenJoinStyle( penJoinStyle )
60{
61 mColor = color;
62}
63
65
71
73{
75 if ( mOffsetUnit != unit )
76 {
78 }
79 return unit;
80}
81
87
93
102
103void QgsSimpleFillSymbolLayer::applyDataDefinedSymbology( QgsSymbolRenderContext &context, QBrush &brush, QPen &pen, QPen &selPen )
104{
105 if ( !dataDefinedProperties().hasActiveProperties() )
106 return; // shortcut
107
108 bool ok;
109
111 {
114 fillColor.setAlphaF( context.opacity() * fillColor.alphaF() );
115 brush.setColor( fillColor );
116 }
118 {
121 if ( !QgsVariantUtils::isNull( exprVal ) )
122 brush.setStyle( QgsSymbolLayerUtils::decodeBrushStyle( exprVal.toString() ) );
123 }
125 {
128 penColor.setAlphaF( context.opacity() * penColor.alphaF() );
129 pen.setColor( penColor );
130 }
132 {
135 if ( !QgsVariantUtils::isNull( exprVal ) )
136 {
137 double width = exprVal.toDouble( &ok );
138 if ( ok )
139 {
141 pen.setWidthF( width );
142 selPen.setWidthF( width );
143 }
144 }
145 }
147 {
150 if ( ok )
151 {
152 pen.setStyle( QgsSymbolLayerUtils::decodePenStyle( style ) );
153 selPen.setStyle( QgsSymbolLayerUtils::decodePenStyle( style ) );
154 }
155 }
157 {
160 if ( ok )
161 {
162 pen.setJoinStyle( QgsSymbolLayerUtils::decodePenJoinStyle( style ) );
163 selPen.setJoinStyle( QgsSymbolLayerUtils::decodePenJoinStyle( style ) );
164 }
165 }
166}
167
168
170{
172 Qt::BrushStyle style = DEFAULT_SIMPLEFILL_STYLE;
177 QPointF offset;
178
179 if ( props.contains( QStringLiteral( "color" ) ) )
180 color = QgsColorUtils::colorFromString( props[QStringLiteral( "color" )].toString() );
181 if ( props.contains( QStringLiteral( "style" ) ) )
182 style = QgsSymbolLayerUtils::decodeBrushStyle( props[QStringLiteral( "style" )].toString() );
183 if ( props.contains( QStringLiteral( "color_border" ) ) )
184 {
185 //pre 2.5 projects used "color_border"
186 strokeColor = QgsColorUtils::colorFromString( props[QStringLiteral( "color_border" )].toString() );
187 }
188 else if ( props.contains( QStringLiteral( "outline_color" ) ) )
189 {
190 strokeColor = QgsColorUtils::colorFromString( props[QStringLiteral( "outline_color" )].toString() );
191 }
192 else if ( props.contains( QStringLiteral( "line_color" ) ) )
193 {
194 strokeColor = QgsColorUtils::colorFromString( props[QStringLiteral( "line_color" )].toString() );
195 }
196
197 if ( props.contains( QStringLiteral( "style_border" ) ) )
198 {
199 //pre 2.5 projects used "style_border"
200 strokeStyle = QgsSymbolLayerUtils::decodePenStyle( props[QStringLiteral( "style_border" )].toString() );
201 }
202 else if ( props.contains( QStringLiteral( "outline_style" ) ) )
203 {
204 strokeStyle = QgsSymbolLayerUtils::decodePenStyle( props[QStringLiteral( "outline_style" )].toString() );
205 }
206 else if ( props.contains( QStringLiteral( "line_style" ) ) )
207 {
208 strokeStyle = QgsSymbolLayerUtils::decodePenStyle( props[QStringLiteral( "line_style" )].toString() );
209 }
210 if ( props.contains( QStringLiteral( "width_border" ) ) )
211 {
212 //pre 2.5 projects used "width_border"
213 strokeWidth = props[QStringLiteral( "width_border" )].toDouble();
214 }
215 else if ( props.contains( QStringLiteral( "outline_width" ) ) )
216 {
217 strokeWidth = props[QStringLiteral( "outline_width" )].toDouble();
218 }
219 else if ( props.contains( QStringLiteral( "line_width" ) ) )
220 {
221 strokeWidth = props[QStringLiteral( "line_width" )].toDouble();
222 }
223 if ( props.contains( QStringLiteral( "offset" ) ) )
224 offset = QgsSymbolLayerUtils::decodePoint( props[QStringLiteral( "offset" )].toString() );
225 if ( props.contains( QStringLiteral( "joinstyle" ) ) )
226 penJoinStyle = QgsSymbolLayerUtils::decodePenJoinStyle( props[QStringLiteral( "joinstyle" )].toString() );
227
228 std::unique_ptr< QgsSimpleFillSymbolLayer > sl = std::make_unique< QgsSimpleFillSymbolLayer >( color, style, strokeColor, strokeStyle, strokeWidth, penJoinStyle );
229 sl->setOffset( offset );
230 if ( props.contains( QStringLiteral( "border_width_unit" ) ) )
231 {
232 sl->setStrokeWidthUnit( QgsUnitTypes::decodeRenderUnit( props[QStringLiteral( "border_width_unit" )].toString() ) );
233 }
234 else if ( props.contains( QStringLiteral( "outline_width_unit" ) ) )
235 {
236 sl->setStrokeWidthUnit( QgsUnitTypes::decodeRenderUnit( props[QStringLiteral( "outline_width_unit" )].toString() ) );
237 }
238 else if ( props.contains( QStringLiteral( "line_width_unit" ) ) )
239 {
240 sl->setStrokeWidthUnit( QgsUnitTypes::decodeRenderUnit( props[QStringLiteral( "line_width_unit" )].toString() ) );
241 }
242 if ( props.contains( QStringLiteral( "offset_unit" ) ) )
243 sl->setOffsetUnit( QgsUnitTypes::decodeRenderUnit( props[QStringLiteral( "offset_unit" )].toString() ) );
244
245 if ( props.contains( QStringLiteral( "border_width_map_unit_scale" ) ) )
246 sl->setStrokeWidthMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( props[QStringLiteral( "border_width_map_unit_scale" )].toString() ) );
247 if ( props.contains( QStringLiteral( "offset_map_unit_scale" ) ) )
248 sl->setOffsetMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( props[QStringLiteral( "offset_map_unit_scale" )].toString() ) );
249
250 sl->restoreOldDataDefinedProperties( props );
251
252 return sl.release();
253}
254
255
257{
258 return QStringLiteral( "SimpleFill" );
259}
260
265
267{
268 QColor fillColor = mColor;
269 fillColor.setAlphaF( context.opacity() * mColor.alphaF() );
270 mBrush = QBrush( fillColor, mBrushStyle );
271
272 QColor selColor = context.renderContext().selectionColor();
273 QColor selPenColor = selColor == mColor ? selColor : mStrokeColor;
274 if ( ! SELECTION_IS_OPAQUE )
275 selColor.setAlphaF( context.opacity() );
276 mSelBrush = QBrush( selColor );
277 // N.B. unless a "selection line color" is implemented in addition to the "selection color" option
278 // this would mean symbols with "no fill" look the same whether or not they are selected
279 if ( SELECT_FILL_STYLE )
280 mSelBrush.setStyle( mBrushStyle );
281
282 QColor strokeColor = mStrokeColor;
283 strokeColor.setAlphaF( context.opacity() * mStrokeColor.alphaF() );
284 mPen = QPen( strokeColor );
285 mSelPen = QPen( selPenColor );
286 mPen.setStyle( mStrokeStyle );
288 mPen.setJoinStyle( mPenJoinStyle );
289}
290
292{
293 Q_UNUSED( context )
294}
295
296void QgsSimpleFillSymbolLayer::renderPolygon( const QPolygonF &points, const QVector<QPolygonF> *rings, QgsSymbolRenderContext &context )
297{
298 QPainter *p = context.renderContext().painter();
299 if ( !p )
300 {
301 return;
302 }
303
304 QColor fillColor = mColor;
305 fillColor.setAlphaF( context.opacity() * mColor.alphaF() );
306 mBrush.setColor( fillColor );
307 QColor strokeColor = mStrokeColor;
308 strokeColor.setAlphaF( context.opacity() * mStrokeColor.alphaF() );
309 mPen.setColor( strokeColor );
310
311 applyDataDefinedSymbology( context, mBrush, mPen, mSelPen );
312
313 QPointF offset = mOffset;
314
316 {
319 bool ok = false;
320 const QPointF res = QgsSymbolLayerUtils::toPoint( val, &ok );
321 if ( ok )
322 offset = res;
323 }
324
325 if ( !offset.isNull() )
326 {
329 p->translate( offset );
330 }
331
332 const bool useSelectedColor = shouldRenderUsingSelectionColor( context );
333
334 if ( mBrush.style() == Qt::SolidPattern || mBrush.style() == Qt::NoBrush || !dynamic_cast<QPagedPaintDevice *>( p->device() ) )
335 {
336 p->setPen( useSelectedColor ? mSelPen : mPen );
337 p->setBrush( useSelectedColor ? mSelBrush : mBrush );
338 _renderPolygon( p, points, rings, context );
339 }
340 else
341 {
342 // workaround upstream issue https://github.com/qgis/QGIS/issues/36580
343 // when a non-solid brush is set with opacity, the opacity incorrectly applies to the pen
344 // when exporting to PDF/print devices
345 p->setBrush( useSelectedColor ? mSelBrush : mBrush );
346 p->setPen( Qt::NoPen );
347 _renderPolygon( p, points, rings, context );
348
349 p->setPen( useSelectedColor ? mSelPen : mPen );
350 p->setBrush( Qt::NoBrush );
351 _renderPolygon( p, points, rings, context );
352 }
353
354 if ( !offset.isNull() )
355 {
356 p->translate( -offset );
357 }
358}
359
361{
362 QVariantMap map;
363 map[QStringLiteral( "color" )] = QgsColorUtils::colorToString( mColor );
364 map[QStringLiteral( "style" )] = QgsSymbolLayerUtils::encodeBrushStyle( mBrushStyle );
365 map[QStringLiteral( "outline_color" )] = QgsColorUtils::colorToString( mStrokeColor );
366 map[QStringLiteral( "outline_style" )] = QgsSymbolLayerUtils::encodePenStyle( mStrokeStyle );
367 map[QStringLiteral( "outline_width" )] = QString::number( mStrokeWidth );
368 map[QStringLiteral( "outline_width_unit" )] = QgsUnitTypes::encodeUnit( mStrokeWidthUnit );
369 map[QStringLiteral( "border_width_map_unit_scale" )] = QgsSymbolLayerUtils::encodeMapUnitScale( mStrokeWidthMapUnitScale );
370 map[QStringLiteral( "joinstyle" )] = QgsSymbolLayerUtils::encodePenJoinStyle( mPenJoinStyle );
371 map[QStringLiteral( "offset" )] = QgsSymbolLayerUtils::encodePoint( mOffset );
372 map[QStringLiteral( "offset_unit" )] = QgsUnitTypes::encodeUnit( mOffsetUnit );
373 map[QStringLiteral( "offset_map_unit_scale" )] = QgsSymbolLayerUtils::encodeMapUnitScale( mOffsetMapUnitScale );
374 return map;
375}
376
378{
379 std::unique_ptr< QgsSimpleFillSymbolLayer > sl = std::make_unique< QgsSimpleFillSymbolLayer >( mColor, mBrushStyle, mStrokeColor, mStrokeStyle, mStrokeWidth, mPenJoinStyle );
380 sl->setOffset( mOffset );
381 sl->setOffsetUnit( mOffsetUnit );
382 sl->setOffsetMapUnitScale( mOffsetMapUnitScale );
383 sl->setStrokeWidthUnit( mStrokeWidthUnit );
384 sl->setStrokeWidthMapUnitScale( mStrokeWidthMapUnitScale );
385 copyDataDefinedProperties( sl.get() );
386 copyPaintEffect( sl.get() );
387 return sl.release();
388}
389
390void QgsSimpleFillSymbolLayer::toSld( QDomDocument &doc, QDomElement &element, const QVariantMap &props ) const
391{
392 if ( mBrushStyle == Qt::NoBrush && mStrokeStyle == Qt::NoPen )
393 return;
394
395 QDomElement symbolizerElem = doc.createElement( QStringLiteral( "se:PolygonSymbolizer" ) );
396 if ( !props.value( QStringLiteral( "uom" ), QString() ).toString().isEmpty() )
397 symbolizerElem.setAttribute( QStringLiteral( "uom" ), props.value( QStringLiteral( "uom" ), QString() ).toString() );
398 element.appendChild( symbolizerElem );
399
400 // <Geometry>
401 QgsSymbolLayerUtils::createGeometryElement( doc, symbolizerElem, props.value( QStringLiteral( "geom" ), QString() ).toString() );
402
403 const QgsSldExportContext context { props.value( QStringLiteral( "SldExportContext" ), QVariant::fromValue( QgsSldExportContext() ) ).value< QgsSldExportContext >() };
404
405
406 // Export to PNG
407 bool exportOk { false };
408 if ( ! context.exportFilePath().isEmpty() && context.exportOptions().testFlag( Qgis::SldExportOption::Png ) )
409 {
410 const QImage image { toTiledPatternImage( ) };
411 if ( ! image.isNull() )
412 {
413 // <Fill>
414 QDomElement fillElem = doc.createElement( QStringLiteral( "se:Fill" ) );
415 symbolizerElem.appendChild( fillElem );
416 QDomElement graphicFillElem = doc.createElement( QStringLiteral( "se:GraphicFill" ) );
417 fillElem.appendChild( graphicFillElem );
418 QDomElement graphicElem = doc.createElement( QStringLiteral( "se:Graphic" ) );
419 graphicFillElem.appendChild( graphicElem );
420 QgsRenderContext renderContext;
421 const QFileInfo info { context.exportFilePath() };
422 QString pngPath { info.completeSuffix().isEmpty() ? context.exportFilePath() : context.exportFilePath().chopped( info.completeSuffix().length() ).append( QStringLiteral( "png" ) ) };
423 pngPath = QgsFileUtils::uniquePath( pngPath );
424 image.save( pngPath );
425 QgsSymbolLayerUtils::externalGraphicToSld( doc, graphicElem, QFileInfo( pngPath ).fileName(), QStringLiteral( "image/png" ), QColor(), image.height() );
426 exportOk = true;
427 }
428 }
429
430 if ( ! exportOk )
431 {
432 if ( mBrushStyle != Qt::NoBrush )
433 {
434
435 QColor color { mColor };
436
437 // Apply alpha from symbol
438 bool ok;
439 const double alpha { props.value( QStringLiteral( "alpha" ), QVariant() ).toDouble( &ok ) };
440 if ( ok )
441 {
442 color.setAlphaF( color.alphaF() * alpha );
443 }
444 // <Fill>
445 QDomElement fillElem = doc.createElement( QStringLiteral( "se:Fill" ) );
446 symbolizerElem.appendChild( fillElem );
448 }
449
450 if ( mStrokeStyle != Qt::NoPen )
451 {
452 // <Stroke>
453 QDomElement strokeElem = doc.createElement( QStringLiteral( "se:Stroke" ) );
454 symbolizerElem.appendChild( strokeElem );
456 // Apply alpha from symbol
457 bool ok;
458 const double alpha { props.value( QStringLiteral( "alpha" ), QVariant() ).toDouble( &ok ) };
459 QColor strokeColor { mStrokeColor };
460 if ( ok )
461 {
462 strokeColor.setAlphaF( strokeColor.alphaF() * alpha );
463 }
465 }
466 }
467
468 // <se:Displacement>
471}
472
473QString QgsSimpleFillSymbolLayer::ogrFeatureStyle( double mmScaleFactor, double mapUnitScaleFactor ) const
474{
475 //brush
476 QString symbolStyle;
477 symbolStyle.append( QgsSymbolLayerUtils::ogrFeatureStyleBrush( mColor ) );
478 symbolStyle.append( ';' );
479 //pen
480 symbolStyle.append( QgsSymbolLayerUtils::ogrFeatureStylePen( mStrokeWidth, mmScaleFactor, mapUnitScaleFactor, mStrokeColor, mPenJoinStyle ) );
481 return symbolStyle;
482}
483
485{
486 QColor color, strokeColor;
487 Qt::BrushStyle fillStyle;
488 Qt::PenStyle strokeStyle;
489 double strokeWidth;
490
491 QDomElement fillElem = element.firstChildElement( QStringLiteral( "Fill" ) );
492 QgsSymbolLayerUtils::fillFromSld( fillElem, fillStyle, color );
493
494 QDomElement strokeElem = element.firstChildElement( QStringLiteral( "Stroke" ) );
496
497 QPointF offset;
499
500 double scaleFactor = 1.0;
501 const QString uom = element.attribute( QStringLiteral( "uom" ) );
502 Qgis::RenderUnit sldUnitSize = QgsSymbolLayerUtils::decodeSldUom( uom, &scaleFactor );
503 offset.setX( offset.x() * scaleFactor );
504 offset.setY( offset.y() * scaleFactor );
505 strokeWidth = strokeWidth * scaleFactor;
506
507 std::unique_ptr< QgsSimpleFillSymbolLayer > sl = std::make_unique< QgsSimpleFillSymbolLayer >( color, fillStyle, strokeColor, strokeStyle, strokeWidth );
508 sl->setOutputUnit( sldUnitSize );
509 sl->setOffset( offset );
510 return sl.release();
511}
512
514{
515 double penBleed = context.convertToPainterUnits( mStrokeStyle == Qt::NoPen ? 0 : ( mStrokeWidth / 2.0 ), mStrokeWidthUnit, mStrokeWidthMapUnitScale );
516 double offsetBleed = context.convertToPainterUnits( std::max( std::fabs( mOffset.x() ), std::fabs( mOffset.y() ) ), mOffsetUnit, mOffsetMapUnitScale );
517 return penBleed + offsetBleed;
518}
519
530
541
552
554{
555 return mStrokeStyle;
556}
557
567
569{
570 return mBrushStyle;
571}
572
574{
575 QPixmap pixmap( QSize( 32, 32 ) );
576 pixmap.fill( Qt::transparent );
577 QPainter painter;
578 painter.begin( &pixmap );
579 painter.setRenderHint( QPainter::Antialiasing );
580 QgsRenderContext renderContext = QgsRenderContext::fromQPainter( &painter );
584 renderContext.setForceVectorOutput( true );
585 QgsSymbolRenderContext symbolContext( renderContext, Qgis::RenderUnit::Pixels, 1.0, false, Qgis::SymbolRenderHints() );
586
587 std::unique_ptr< QgsSimpleFillSymbolLayer > layerClone( clone() );
588 layerClone->setStrokeStyle( Qt::PenStyle::NoPen );
589 layerClone->drawPreviewIcon( symbolContext, pixmap.size() );
590 painter.end();
591 return pixmap.toImage();
592}
593
594//QgsGradientFillSymbolLayer
595
596QgsGradientFillSymbolLayer::QgsGradientFillSymbolLayer( const QColor &color, const QColor &color2,
597 Qgis::GradientColorSource colorType, Qgis::GradientType gradientType,
599 : mGradientColorType( colorType )
600 , mGradientType( gradientType )
601 , mCoordinateMode( coordinateMode )
602 , mGradientSpread( spread )
603 , mReferencePoint1( QPointF( 0.5, 0 ) )
604 , mReferencePoint2( QPointF( 0.5, 1 ) )
605{
606 mColor = color;
607 mColor2 = color2;
608}
609
614
616{
617 //default to a two-color, linear gradient with feature mode and pad spreading
622 //default to gradient from the default fill color to white
623 QColor color = DEFAULT_SIMPLEFILL_COLOR, color2 = Qt::white;
624 QPointF referencePoint1 = QPointF( 0.5, 0 );
625 bool refPoint1IsCentroid = false;
626 QPointF referencePoint2 = QPointF( 0.5, 1 );
627 bool refPoint2IsCentroid = false;
628 double angle = 0;
629 QPointF offset;
630
631 //update gradient properties from props
632 if ( props.contains( QStringLiteral( "type" ) ) )
633 type = static_cast< Qgis::GradientType >( props[QStringLiteral( "type" )].toInt() );
634 if ( props.contains( QStringLiteral( "coordinate_mode" ) ) )
635 coordinateMode = static_cast< Qgis::SymbolCoordinateReference >( props[QStringLiteral( "coordinate_mode" )].toInt() );
636 if ( props.contains( QStringLiteral( "spread" ) ) )
637 gradientSpread = static_cast< Qgis::GradientSpread >( props[QStringLiteral( "spread" )].toInt() );
638 if ( props.contains( QStringLiteral( "color_type" ) ) )
639 colorType = static_cast< Qgis::GradientColorSource >( props[QStringLiteral( "color_type" )].toInt() );
640 if ( props.contains( QStringLiteral( "gradient_color" ) ) )
641 {
642 //pre 2.5 projects used "gradient_color"
643 color = QgsColorUtils::colorFromString( props[QStringLiteral( "gradient_color" )].toString() );
644 }
645 else if ( props.contains( QStringLiteral( "color" ) ) )
646 {
647 color = QgsColorUtils::colorFromString( props[QStringLiteral( "color" )].toString() );
648 }
649 if ( props.contains( QStringLiteral( "gradient_color2" ) ) )
650 {
651 color2 = QgsColorUtils::colorFromString( props[QStringLiteral( "gradient_color2" )].toString() );
652 }
653
654 if ( props.contains( QStringLiteral( "reference_point1" ) ) )
655 referencePoint1 = QgsSymbolLayerUtils::decodePoint( props[QStringLiteral( "reference_point1" )].toString() );
656 if ( props.contains( QStringLiteral( "reference_point1_iscentroid" ) ) )
657 refPoint1IsCentroid = props[QStringLiteral( "reference_point1_iscentroid" )].toInt();
658 if ( props.contains( QStringLiteral( "reference_point2" ) ) )
659 referencePoint2 = QgsSymbolLayerUtils::decodePoint( props[QStringLiteral( "reference_point2" )].toString() );
660 if ( props.contains( QStringLiteral( "reference_point2_iscentroid" ) ) )
661 refPoint2IsCentroid = props[QStringLiteral( "reference_point2_iscentroid" )].toInt();
662 if ( props.contains( QStringLiteral( "angle" ) ) )
663 angle = props[QStringLiteral( "angle" )].toDouble();
664
665 if ( props.contains( QStringLiteral( "offset" ) ) )
666 offset = QgsSymbolLayerUtils::decodePoint( props[QStringLiteral( "offset" )].toString() );
667
668 //attempt to create color ramp from props
669 QgsColorRamp *gradientRamp = nullptr;
670 if ( props.contains( QStringLiteral( "rampType" ) ) && props[QStringLiteral( "rampType" )] == QgsCptCityColorRamp::typeString() )
671 {
672 gradientRamp = QgsCptCityColorRamp::create( props );
673 }
674 else
675 {
676 gradientRamp = QgsGradientColorRamp::create( props );
677 }
678
679 //create a new gradient fill layer with desired properties
680 std::unique_ptr< QgsGradientFillSymbolLayer > sl = std::make_unique< QgsGradientFillSymbolLayer >( color, color2, colorType, type, coordinateMode, gradientSpread );
681 sl->setOffset( offset );
682 if ( props.contains( QStringLiteral( "offset_unit" ) ) )
683 sl->setOffsetUnit( QgsUnitTypes::decodeRenderUnit( props[QStringLiteral( "offset_unit" )].toString() ) );
684 if ( props.contains( QStringLiteral( "offset_map_unit_scale" ) ) )
685 sl->setOffsetMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( props[QStringLiteral( "offset_map_unit_scale" )].toString() ) );
686 sl->setReferencePoint1( referencePoint1 );
687 sl->setReferencePoint1IsCentroid( refPoint1IsCentroid );
688 sl->setReferencePoint2( referencePoint2 );
689 sl->setReferencePoint2IsCentroid( refPoint2IsCentroid );
690 sl->setAngle( angle );
691 if ( gradientRamp )
692 sl->setColorRamp( gradientRamp );
693
694 sl->restoreOldDataDefinedProperties( props );
695
696 return sl.release();
697}
698
703
709
711{
712 return QStringLiteral( "GradientFill" );
713}
714
715void QgsGradientFillSymbolLayer::applyDataDefinedSymbology( QgsSymbolRenderContext &context, const QPolygonF &points )
716{
718 {
719 //shortcut
722 return;
723 }
724
725 bool ok;
726
727 //first gradient color
728 QColor color = mColor;
730 {
733 color.setAlphaF( context.opacity() * color.alphaF() );
734 }
735
736 //second gradient color
737 QColor color2 = mColor2;
739 {
742 color2.setAlphaF( context.opacity() * color2.alphaF() );
743 }
744
745 //gradient rotation angle
746 double angle = mAngle;
748 {
751 }
752
753 //gradient type
756 {
758 if ( ok )
759 {
760 if ( currentType == QObject::tr( "linear" ) )
761 {
763 }
764 else if ( currentType == QObject::tr( "radial" ) )
765 {
767 }
768 else if ( currentType == QObject::tr( "conical" ) )
769 {
771 }
772 }
773 }
774
775 //coordinate mode
778 {
780 if ( ok )
781 {
782 if ( currentCoordMode == QObject::tr( "feature" ) )
783 {
785 }
786 else if ( currentCoordMode == QObject::tr( "viewport" ) )
787 {
789 }
790 }
791 }
792
793 //gradient spread
796 {
798 if ( ok )
799 {
800 if ( currentSpread == QObject::tr( "pad" ) )
801 {
803 }
804 else if ( currentSpread == QObject::tr( "repeat" ) )
805 {
807 }
808 else if ( currentSpread == QObject::tr( "reflect" ) )
809 {
811 }
812 }
813 }
814
815 //reference point 1 x & y
816 double refPoint1X = mReferencePoint1.x();
818 {
819 context.setOriginalValueVariable( refPoint1X );
821 }
822 double refPoint1Y = mReferencePoint1.y();
824 {
825 context.setOriginalValueVariable( refPoint1Y );
827 }
828 bool refPoint1IsCentroid = mReferencePoint1IsCentroid;
830 {
831 context.setOriginalValueVariable( refPoint1IsCentroid );
833 }
834
835 //reference point 2 x & y
836 double refPoint2X = mReferencePoint2.x();
838 {
839 context.setOriginalValueVariable( refPoint2X );
841 }
842 double refPoint2Y = mReferencePoint2.y();
844 {
845 context.setOriginalValueVariable( refPoint2Y );
847 }
848 bool refPoint2IsCentroid = mReferencePoint2IsCentroid;
850 {
851 context.setOriginalValueVariable( refPoint2IsCentroid );
853 }
854
855 if ( refPoint1IsCentroid || refPoint2IsCentroid )
856 {
857 //either the gradient is starting or ending at a centroid, so calculate it
858 QPointF centroid = QgsSymbolLayerUtils::polygonCentroid( points );
859 //centroid coordinates need to be scaled to a range [0, 1] relative to polygon bounds
860 QRectF bbox = points.boundingRect();
861 double centroidX = ( centroid.x() - bbox.left() ) / bbox.width();
862 double centroidY = ( centroid.y() - bbox.top() ) / bbox.height();
863
864 if ( refPoint1IsCentroid )
865 {
866 refPoint1X = centroidX;
867 refPoint1Y = centroidY;
868 }
869 if ( refPoint2IsCentroid )
870 {
871 refPoint2X = centroidX;
872 refPoint2Y = centroidY;
873 }
874 }
875
876 //update gradient with data defined values
878 spread, QPointF( refPoint1X, refPoint1Y ), QPointF( refPoint2X, refPoint2Y ), angle );
879}
880
881QPointF QgsGradientFillSymbolLayer::rotateReferencePoint( QPointF refPoint, double angle )
882{
883 //rotate a reference point by a specified angle around the point (0.5, 0.5)
884
885 //create a line from the centrepoint of a rectangle bounded by (0, 0) and (1, 1) to the reference point
886 QLineF refLine = QLineF( QPointF( 0.5, 0.5 ), refPoint );
887 //rotate this line by the current rotation angle
888 refLine.setAngle( refLine.angle() + angle );
889 //get new end point of line
890 QPointF rotatedReferencePoint = refLine.p2();
891 //make sure coords of new end point is within [0, 1]
892 if ( rotatedReferencePoint.x() > 1 )
893 rotatedReferencePoint.setX( 1 );
894 if ( rotatedReferencePoint.x() < 0 )
895 rotatedReferencePoint.setX( 0 );
896 if ( rotatedReferencePoint.y() > 1 )
897 rotatedReferencePoint.setY( 1 );
898 if ( rotatedReferencePoint.y() < 0 )
899 rotatedReferencePoint.setY( 0 );
900
901 return rotatedReferencePoint;
902}
903
904void QgsGradientFillSymbolLayer::applyGradient( const QgsSymbolRenderContext &context, QBrush &brush,
905 const QColor &color, const QColor &color2, Qgis::GradientColorSource gradientColorType,
906 QgsColorRamp *gradientRamp, Qgis::GradientType gradientType,
907 Qgis::SymbolCoordinateReference coordinateMode, Qgis::GradientSpread gradientSpread,
908 QPointF referencePoint1, QPointF referencePoint2, const double angle )
909{
910 //update alpha of gradient colors
911 QColor fillColor = color;
912 fillColor.setAlphaF( context.opacity() * fillColor.alphaF() );
913 QColor fillColor2 = color2;
914 fillColor2.setAlphaF( context.opacity() * fillColor2.alphaF() );
915
916 //rotate reference points
917 QPointF rotatedReferencePoint1 = !qgsDoubleNear( angle, 0.0 ) ? rotateReferencePoint( referencePoint1, angle ) : referencePoint1;
918 QPointF rotatedReferencePoint2 = !qgsDoubleNear( angle, 0.0 ) ? rotateReferencePoint( referencePoint2, angle ) : referencePoint2;
919
920 //create a QGradient with the desired properties
921 QGradient gradient;
922 switch ( gradientType )
923 {
925 gradient = QLinearGradient( rotatedReferencePoint1, rotatedReferencePoint2 );
926 break;
928 gradient = QRadialGradient( rotatedReferencePoint1, QLineF( rotatedReferencePoint1, rotatedReferencePoint2 ).length() );
929 break;
931 gradient = QConicalGradient( rotatedReferencePoint1, QLineF( rotatedReferencePoint1, rotatedReferencePoint2 ).angle() );
932 break;
933 }
934 switch ( coordinateMode )
935 {
937 gradient.setCoordinateMode( QGradient::ObjectBoundingMode );
938 break;
940 gradient.setCoordinateMode( QGradient::StretchToDeviceMode );
941 break;
942 }
943 switch ( gradientSpread )
944 {
946 gradient.setSpread( QGradient::PadSpread );
947 break;
949 gradient.setSpread( QGradient::ReflectSpread );
950 break;
952 gradient.setSpread( QGradient::RepeatSpread );
953 break;
954 }
955
956 //add stops to gradient
958 ( gradientRamp->type() == QgsGradientColorRamp::typeString() || gradientRamp->type() == QgsCptCityColorRamp::typeString() ) )
959 {
960 //color ramp gradient
961 QgsGradientColorRamp *gradRamp = static_cast<QgsGradientColorRamp *>( gradientRamp );
962 gradRamp->addStopsToGradient( &gradient, context.opacity() );
963 }
964 else
965 {
966 //two color gradient
967 gradient.setColorAt( 0.0, fillColor );
968 gradient.setColorAt( 1.0, fillColor2 );
969 }
970
971 //update QBrush use gradient
972 brush = QBrush( gradient );
973}
974
976{
977 QColor selColor = context.renderContext().selectionColor();
978 if ( ! SELECTION_IS_OPAQUE )
979 selColor.setAlphaF( context.opacity() );
980 mSelBrush = QBrush( selColor );
981}
982
984{
985 Q_UNUSED( context )
986}
987
988void QgsGradientFillSymbolLayer::renderPolygon( const QPolygonF &points, const QVector<QPolygonF> *rings, QgsSymbolRenderContext &context )
989{
990 QPainter *p = context.renderContext().painter();
991 if ( !p )
992 {
993 return;
994 }
995
996 applyDataDefinedSymbology( context, points );
997
998 const bool useSelectedColor = shouldRenderUsingSelectionColor( context );
999 p->setBrush( useSelectedColor ? mSelBrush : mBrush );
1000 p->setPen( Qt::NoPen );
1001
1002 QPointF offset = mOffset;
1004 {
1007 bool ok = false;
1008 const QPointF res = QgsSymbolLayerUtils::toPoint( val, &ok );
1009 if ( ok )
1010 offset = res;
1011 }
1012
1013 if ( !offset.isNull() )
1014 {
1017 p->translate( offset );
1018 }
1019
1020 _renderPolygon( p, points, rings, context );
1021
1022 if ( !offset.isNull() )
1023 {
1024 p->translate( -offset );
1025 }
1026}
1027
1029{
1030 QVariantMap map;
1031 map[QStringLiteral( "color" )] = QgsColorUtils::colorToString( mColor );
1032 map[QStringLiteral( "gradient_color2" )] = QgsColorUtils::colorToString( mColor2 );
1033 map[QStringLiteral( "color_type" )] = QString::number( static_cast< int >( mGradientColorType ) );
1034 map[QStringLiteral( "type" )] = QString::number( static_cast<int>( mGradientType ) );
1035 map[QStringLiteral( "coordinate_mode" )] = QString::number( static_cast< int >( mCoordinateMode ) );
1036 map[QStringLiteral( "spread" )] = QString::number( static_cast< int >( mGradientSpread ) );
1037 map[QStringLiteral( "reference_point1" )] = QgsSymbolLayerUtils::encodePoint( mReferencePoint1 );
1038 map[QStringLiteral( "reference_point1_iscentroid" )] = QString::number( mReferencePoint1IsCentroid );
1039 map[QStringLiteral( "reference_point2" )] = QgsSymbolLayerUtils::encodePoint( mReferencePoint2 );
1040 map[QStringLiteral( "reference_point2_iscentroid" )] = QString::number( mReferencePoint2IsCentroid );
1041 map[QStringLiteral( "angle" )] = QString::number( mAngle );
1042 map[QStringLiteral( "offset" )] = QgsSymbolLayerUtils::encodePoint( mOffset );
1043 map[QStringLiteral( "offset_unit" )] = QgsUnitTypes::encodeUnit( mOffsetUnit );
1044 map[QStringLiteral( "offset_map_unit_scale" )] = QgsSymbolLayerUtils::encodeMapUnitScale( mOffsetMapUnitScale );
1045 if ( mGradientRamp )
1046 {
1047 map.insert( mGradientRamp->properties() );
1048 }
1049 return map;
1050}
1051
1053{
1054 std::unique_ptr< QgsGradientFillSymbolLayer > sl = std::make_unique< QgsGradientFillSymbolLayer >( mColor, mColor2, mGradientColorType, mGradientType, mCoordinateMode, mGradientSpread );
1055 if ( mGradientRamp )
1056 sl->setColorRamp( mGradientRamp->clone() );
1057 sl->setReferencePoint1( mReferencePoint1 );
1058 sl->setReferencePoint1IsCentroid( mReferencePoint1IsCentroid );
1059 sl->setReferencePoint2( mReferencePoint2 );
1060 sl->setReferencePoint2IsCentroid( mReferencePoint2IsCentroid );
1061 sl->setAngle( mAngle );
1062 sl->setOffset( mOffset );
1063 sl->setOffsetUnit( mOffsetUnit );
1064 sl->setOffsetMapUnitScale( mOffsetMapUnitScale );
1065 copyDataDefinedProperties( sl.get() );
1066 copyPaintEffect( sl.get() );
1067 return sl.release();
1068}
1069
1071{
1072 double offsetBleed = context.convertToPainterUnits( std::max( std::fabs( mOffset.x() ), std::fabs( mOffset.y() ) ), mOffsetUnit, mOffsetMapUnitScale );
1073 return offsetBleed;
1074}
1075
1080
1085
1090
1095
1100
1105
1106//QgsShapeburstFillSymbolLayer
1107
1109 int blurRadius, bool useWholeShape, double maxDistance )
1110 : mBlurRadius( blurRadius )
1111 , mUseWholeShape( useWholeShape )
1112 , mMaxDistance( maxDistance )
1113 , mColorType( colorType )
1114 , mColor2( color2 )
1115{
1116 mColor = color;
1117}
1118
1120
1122{
1123 //default to a two-color gradient
1125 QColor color = DEFAULT_SIMPLEFILL_COLOR, color2 = Qt::white;
1126 int blurRadius = 0;
1127 bool useWholeShape = true;
1128 double maxDistance = 5;
1129 QPointF offset;
1130
1131 //update fill properties from props
1132 if ( props.contains( QStringLiteral( "color_type" ) ) )
1133 {
1134 colorType = static_cast< Qgis::GradientColorSource >( props[QStringLiteral( "color_type" )].toInt() );
1135 }
1136 if ( props.contains( QStringLiteral( "shapeburst_color" ) ) )
1137 {
1138 //pre 2.5 projects used "shapeburst_color"
1139 color = QgsColorUtils::colorFromString( props[QStringLiteral( "shapeburst_color" )].toString() );
1140 }
1141 else if ( props.contains( QStringLiteral( "color" ) ) )
1142 {
1143 color = QgsColorUtils::colorFromString( props[QStringLiteral( "color" )].toString() );
1144 }
1145
1146 if ( props.contains( QStringLiteral( "shapeburst_color2" ) ) )
1147 {
1148 //pre 2.5 projects used "shapeburst_color2"
1149 color2 = QgsColorUtils::colorFromString( props[QStringLiteral( "shapeburst_color2" )].toString() );
1150 }
1151 else if ( props.contains( QStringLiteral( "gradient_color2" ) ) )
1152 {
1153 color2 = QgsColorUtils::colorFromString( props[QStringLiteral( "gradient_color2" )].toString() );
1154 }
1155 if ( props.contains( QStringLiteral( "blur_radius" ) ) )
1156 {
1157 blurRadius = props[QStringLiteral( "blur_radius" )].toInt();
1158 }
1159 if ( props.contains( QStringLiteral( "use_whole_shape" ) ) )
1160 {
1161 useWholeShape = props[QStringLiteral( "use_whole_shape" )].toInt();
1162 }
1163 if ( props.contains( QStringLiteral( "max_distance" ) ) )
1164 {
1165 maxDistance = props[QStringLiteral( "max_distance" )].toDouble();
1166 }
1167 if ( props.contains( QStringLiteral( "offset" ) ) )
1168 {
1169 offset = QgsSymbolLayerUtils::decodePoint( props[QStringLiteral( "offset" )].toString() );
1170 }
1171
1172 //attempt to create color ramp from props
1173 QgsColorRamp *gradientRamp = nullptr;
1174 if ( props.contains( QStringLiteral( "rampType" ) ) && props[QStringLiteral( "rampType" )] == QgsCptCityColorRamp::typeString() )
1175 {
1176 gradientRamp = QgsCptCityColorRamp::create( props );
1177 }
1178 else
1179 {
1180 gradientRamp = QgsGradientColorRamp::create( props );
1181 }
1182
1183 //create a new shapeburst fill layer with desired properties
1184 std::unique_ptr< QgsShapeburstFillSymbolLayer > sl = std::make_unique< QgsShapeburstFillSymbolLayer >( color, color2, colorType, blurRadius, useWholeShape, maxDistance );
1185 sl->setOffset( offset );
1186 if ( props.contains( QStringLiteral( "offset_unit" ) ) )
1187 {
1188 sl->setOffsetUnit( QgsUnitTypes::decodeRenderUnit( props[QStringLiteral( "offset_unit" )].toString() ) );
1189 }
1190 if ( props.contains( QStringLiteral( "distance_unit" ) ) )
1191 {
1192 sl->setDistanceUnit( QgsUnitTypes::decodeRenderUnit( props[QStringLiteral( "distance_unit" )].toString() ) );
1193 }
1194 if ( props.contains( QStringLiteral( "offset_map_unit_scale" ) ) )
1195 {
1196 sl->setOffsetMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( props[QStringLiteral( "offset_map_unit_scale" )].toString() ) );
1197 }
1198 if ( props.contains( QStringLiteral( "distance_map_unit_scale" ) ) )
1199 {
1200 sl->setDistanceMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( props[QStringLiteral( "distance_map_unit_scale" )].toString() ) );
1201 }
1202 if ( props.contains( QStringLiteral( "ignore_rings" ) ) )
1203 {
1204 sl->setIgnoreRings( props[QStringLiteral( "ignore_rings" )].toInt() );
1205 }
1206 if ( gradientRamp )
1207 {
1208 sl->setColorRamp( gradientRamp );
1209 }
1210
1211 sl->restoreOldDataDefinedProperties( props );
1212
1213 return sl.release();
1214}
1215
1217{
1218 return QStringLiteral( "ShapeburstFill" );
1219}
1220
1225
1227{
1228 if ( mGradientRamp.get() == ramp )
1229 return;
1230
1231 mGradientRamp.reset( ramp );
1232}
1233
1234void QgsShapeburstFillSymbolLayer::applyDataDefinedSymbology( QgsSymbolRenderContext &context, QColor &color, QColor &color2, int &blurRadius, bool &useWholeShape,
1235 double &maxDistance, bool &ignoreRings )
1236{
1237 //first gradient color
1238 color = mColor;
1240 {
1243 }
1244
1245 //second gradient color
1246 color2 = mColor2;
1248 {
1251 }
1252
1253 //blur radius
1254 blurRadius = mBlurRadius;
1256 {
1257 context.setOriginalValueVariable( mBlurRadius );
1259 }
1260
1261 //use whole shape
1262 useWholeShape = mUseWholeShape;
1264 {
1265 context.setOriginalValueVariable( mUseWholeShape );
1267 }
1268
1269 //max distance
1270 maxDistance = mMaxDistance;
1272 {
1273 context.setOriginalValueVariable( mMaxDistance );
1275 }
1276
1277 //ignore rings
1278 ignoreRings = mIgnoreRings;
1280 {
1281 context.setOriginalValueVariable( mIgnoreRings );
1283 }
1284
1285}
1286
1288{
1289 //TODO - check this
1290 QColor selColor = context.renderContext().selectionColor();
1291 if ( ! SELECTION_IS_OPAQUE )
1292 selColor.setAlphaF( context.opacity() );
1293 mSelBrush = QBrush( selColor );
1294}
1295
1297{
1298 Q_UNUSED( context )
1299}
1300
1301void QgsShapeburstFillSymbolLayer::renderPolygon( const QPolygonF &points, const QVector<QPolygonF> *rings, QgsSymbolRenderContext &context )
1302{
1303 QPainter *p = context.renderContext().painter();
1304 if ( !p )
1305 {
1306 return;
1307 }
1308
1309 const bool useSelectedColor = shouldRenderUsingSelectionColor( context );
1310 if ( useSelectedColor )
1311 {
1312 //feature is selected, draw using selection style
1313 p->setBrush( mSelBrush );
1314 QPointF offset = mOffset;
1315
1317 {
1320 bool ok = false;
1321 const QPointF res = QgsSymbolLayerUtils::toPoint( val, &ok );
1322 if ( ok )
1323 offset = res;
1324 }
1325
1326 if ( !offset.isNull() )
1327 {
1328 offset.setX( context.renderContext().convertToPainterUnits( offset.x(), mOffsetUnit, mOffsetMapUnitScale ) );
1329 offset.setY( context.renderContext().convertToPainterUnits( offset.y(), mOffsetUnit, mOffsetMapUnitScale ) );
1330 p->translate( offset );
1331 }
1332 _renderPolygon( p, points, rings, context );
1333 if ( !offset.isNull() )
1334 {
1335 p->translate( -offset );
1336 }
1337 return;
1338 }
1339
1340 QColor color1, color2;
1341 int blurRadius;
1342 bool useWholeShape;
1343 double maxDistance;
1344 bool ignoreRings;
1345 //calculate data defined symbology
1346 applyDataDefinedSymbology( context, color1, color2, blurRadius, useWholeShape, maxDistance, ignoreRings );
1347
1348 //calculate max distance for shapeburst fill to extend from polygon boundary, in pixels
1349 int outputPixelMaxDist = 0;
1350 if ( !useWholeShape && !qgsDoubleNear( maxDistance, 0.0 ) )
1351 {
1352 //convert max distance to pixels
1353 outputPixelMaxDist = static_cast< int >( std::round( context.renderContext().convertToPainterUnits( maxDistance, mDistanceUnit, mDistanceMapUnitScale ) ) );
1354 }
1355
1356 //if we are using the two color mode, create a gradient ramp
1357 std::unique_ptr< QgsGradientColorRamp > twoColorGradientRamp;
1359 {
1360 twoColorGradientRamp = std::make_unique< QgsGradientColorRamp >( color1, color2 );
1361 }
1362
1363 //no stroke for shapeburst fills
1364 p->setPen( QPen( Qt::NoPen ) );
1365
1366 //calculate margin size in pixels so that QImage of polygon has sufficient space to draw the full blur effect
1367 int sideBuffer = 4 + ( blurRadius + 2 ) * 4;
1368 //create a QImage to draw shapeburst in
1369 int pointsWidth = static_cast< int >( std::round( points.boundingRect().width() ) );
1370 int pointsHeight = static_cast< int >( std::round( points.boundingRect().height() ) );
1371 int imWidth = pointsWidth + ( sideBuffer * 2 );
1372 int imHeight = pointsHeight + ( sideBuffer * 2 );
1373
1374 // these are all potentially very expensive operations, so check regularly if the job is canceled and abort responsively
1375 if ( context.renderContext().feedback() && context.renderContext().feedback()->isCanceled() )
1376 return;
1377
1378 std::unique_ptr< QImage > fillImage = std::make_unique< QImage >( imWidth,
1379 imHeight, QImage::Format_ARGB32_Premultiplied );
1380 if ( fillImage->isNull() )
1381 {
1382 QgsMessageLog::logMessage( QObject::tr( "Could not allocate sufficient memory for shapeburst fill" ) );
1383 return;
1384 }
1385
1386 if ( context.renderContext().feedback() && context.renderContext().feedback()->isCanceled() )
1387 return;
1388
1389 //also create an image to store the alpha channel
1390 std::unique_ptr< QImage > alphaImage = std::make_unique< QImage >( fillImage->width(), fillImage->height(), QImage::Format_ARGB32_Premultiplied );
1391 if ( alphaImage->isNull() )
1392 {
1393 QgsMessageLog::logMessage( QObject::tr( "Could not allocate sufficient memory for shapeburst fill" ) );
1394 return;
1395 }
1396
1397 if ( context.renderContext().feedback() && context.renderContext().feedback()->isCanceled() )
1398 return;
1399
1400 //Fill this image with black. Initially the distance transform is drawn in greyscale, where black pixels have zero distance from the
1401 //polygon boundary. Since we don't care about pixels which fall outside the polygon, we start with a black image and then draw over it the
1402 //polygon in white. The distance transform function then fills in the correct distance values for the white pixels.
1403 fillImage->fill( Qt::black );
1404
1405 if ( context.renderContext().feedback() && context.renderContext().feedback()->isCanceled() )
1406 return;
1407
1408 //initially fill the alpha channel image with a transparent color
1409 alphaImage->fill( Qt::transparent );
1410
1411 if ( context.renderContext().feedback() && context.renderContext().feedback()->isCanceled() )
1412 return;
1413
1414 //now, draw the polygon in the alpha channel image
1415 QPainter imgPainter;
1416 imgPainter.begin( alphaImage.get() );
1417 imgPainter.setRenderHint( QPainter::Antialiasing, true );
1418 imgPainter.setBrush( QBrush( Qt::white ) );
1419 imgPainter.setPen( QPen( Qt::black ) );
1420 imgPainter.translate( -points.boundingRect().left() + sideBuffer, - points.boundingRect().top() + sideBuffer );
1421 _renderPolygon( &imgPainter, points, rings, context );
1422 imgPainter.end();
1423
1424 if ( context.renderContext().feedback() && context.renderContext().feedback()->isCanceled() )
1425 return;
1426
1427 //now that we have a render of the polygon in white, draw this onto the shapeburst fill image too
1428 //(this avoids calling _renderPolygon twice, since that can be slow)
1429 imgPainter.begin( fillImage.get() );
1430 if ( !ignoreRings )
1431 {
1432 imgPainter.drawImage( 0, 0, *alphaImage );
1433 }
1434 else
1435 {
1436 //using ignore rings mode, so the alpha image can't be used
1437 //directly as the alpha channel contains polygon rings and we need
1438 //to draw now without any rings
1439 imgPainter.setBrush( QBrush( Qt::white ) );
1440 imgPainter.setPen( QPen( Qt::black ) );
1441 imgPainter.translate( -points.boundingRect().left() + sideBuffer, - points.boundingRect().top() + sideBuffer );
1442 _renderPolygon( &imgPainter, points, nullptr, context );
1443 }
1444 imgPainter.end();
1445
1446 if ( context.renderContext().feedback() && context.renderContext().feedback()->isCanceled() )
1447 return;
1448
1449 //apply distance transform to image, uses the current color ramp to calculate final pixel colors
1450 double *dtArray = distanceTransform( fillImage.get(), context.renderContext() );
1451
1452 //copy distance transform values back to QImage, shading by appropriate color ramp
1453 dtArrayToQImage( dtArray, fillImage.get(), mColorType == Qgis::GradientColorSource::SimpleTwoColor ? twoColorGradientRamp.get() : mGradientRamp.get(),
1454 context.renderContext(), useWholeShape, outputPixelMaxDist );
1455 if ( context.opacity() < 1 )
1456 {
1457 QgsImageOperation::multiplyOpacity( *fillImage, context.opacity(), context.renderContext().feedback() );
1458 }
1459
1460 //clean up some variables
1461 delete [] dtArray;
1462
1463 //apply blur if desired
1464 if ( blurRadius > 0 )
1465 {
1466 QgsImageOperation::stackBlur( *fillImage, blurRadius, false, context.renderContext().feedback() );
1467 }
1468
1469 //apply alpha channel to distance transform image, so that areas outside the polygon are transparent
1470 imgPainter.begin( fillImage.get() );
1471 imgPainter.setCompositionMode( QPainter::CompositionMode_DestinationIn );
1472 imgPainter.drawImage( 0, 0, *alphaImage );
1473 imgPainter.end();
1474 //we're finished with the alpha channel image now
1475 alphaImage.reset();
1476
1477 //draw shapeburst image in correct place in the destination painter
1478
1479 QgsScopedQPainterState painterState( p );
1480 QPointF offset = mOffset;
1482 {
1485 bool ok = false;
1486 const QPointF res = QgsSymbolLayerUtils::toPoint( val, &ok );
1487 if ( ok )
1488 offset = res;
1489 }
1490 if ( !offset.isNull() )
1491 {
1492 offset.setX( context.renderContext().convertToPainterUnits( offset.x(), mOffsetUnit, mOffsetMapUnitScale ) );
1493 offset.setY( context.renderContext().convertToPainterUnits( offset.y(), mOffsetUnit, mOffsetMapUnitScale ) );
1494 p->translate( offset );
1495 }
1496
1497 p->drawImage( points.boundingRect().left() - sideBuffer, points.boundingRect().top() - sideBuffer, *fillImage );
1498
1499 if ( !offset.isNull() )
1500 {
1501 p->translate( -offset );
1502 }
1503}
1504
1505//fast distance transform code, adapted from http://cs.brown.edu/~pff/dt/
1506
1507/* distance transform of a 1d function using squared distance */
1508void QgsShapeburstFillSymbolLayer::distanceTransform1d( double *f, int n, int *v, double *z, double *d )
1509{
1510 int k = 0;
1511 v[0] = 0;
1512 z[0] = -INF;
1513 z[1] = + INF;
1514 for ( int q = 1; q <= n - 1; q++ )
1515 {
1516 double s = ( ( f[q] + static_cast< double >( q ) * q ) - ( f[v[k]] + ( static_cast< double >( v[k] ) * v[k] ) ) ) / ( 2 * q - 2 * v[k] );
1517 while ( s <= z[k] )
1518 {
1519 k--;
1520 s = ( ( f[q] + static_cast< double >( q ) * q ) - ( f[v[k]] + ( static_cast< double >( v[k] ) * v[k] ) ) ) / ( 2 * q - 2 * v[k] );
1521 }
1522 k++;
1523 v[k] = q;
1524 z[k] = s;
1525 z[k + 1] = + INF;
1526 }
1527
1528 k = 0;
1529 for ( int q = 0; q <= n - 1; q++ )
1530 {
1531 while ( z[k + 1] < q )
1532 k++;
1533 d[q] = static_cast< double >( q - v[k] ) * ( q - v[k] ) + f[v[k]];
1534 }
1535}
1536
1537/* distance transform of 2d function using squared distance */
1538void QgsShapeburstFillSymbolLayer::distanceTransform2d( double *im, int width, int height, QgsRenderContext &context )
1539{
1540 int maxDimension = std::max( width, height );
1541 double *f = new double[ maxDimension ];
1542 int *v = new int[ maxDimension ];
1543 double *z = new double[ maxDimension + 1 ];
1544 double *d = new double[ maxDimension ];
1545
1546 // transform along columns
1547 for ( int x = 0; x < width; x++ )
1548 {
1549 if ( context.renderingStopped() )
1550 break;
1551
1552 for ( int y = 0; y < height; y++ )
1553 {
1554 f[y] = im[ x + static_cast< std::size_t>( y ) * width ];
1555 }
1556 distanceTransform1d( f, height, v, z, d );
1557 for ( int y = 0; y < height; y++ )
1558 {
1559 im[ x + static_cast< std::size_t>( y ) * width ] = d[y];
1560 }
1561 }
1562
1563 // transform along rows
1564 for ( int y = 0; y < height; y++ )
1565 {
1566 if ( context.renderingStopped() )
1567 break;
1568
1569 for ( int x = 0; x < width; x++ )
1570 {
1571 f[x] = im[ x + static_cast< std::size_t>( y ) * width ];
1572 }
1573 distanceTransform1d( f, width, v, z, d );
1574 for ( int x = 0; x < width; x++ )
1575 {
1576 im[ x + static_cast< std::size_t>( y ) * width ] = d[x];
1577 }
1578 }
1579
1580 delete [] d;
1581 delete [] f;
1582 delete [] v;
1583 delete [] z;
1584}
1585
1586/* distance transform of a binary QImage */
1587double *QgsShapeburstFillSymbolLayer::distanceTransform( QImage *im, QgsRenderContext &context )
1588{
1589 int width = im->width();
1590 int height = im->height();
1591
1592 double *dtArray = new double[static_cast< std::size_t>( width ) * height];
1593
1594 //load qImage to array
1595 QRgb tmpRgb;
1596 std::size_t idx = 0;
1597 for ( int heightIndex = 0; heightIndex < height; ++heightIndex )
1598 {
1599 if ( context.renderingStopped() )
1600 break;
1601
1602 const QRgb *scanLine = reinterpret_cast< const QRgb * >( im->constScanLine( heightIndex ) );
1603 for ( int widthIndex = 0; widthIndex < width; ++widthIndex )
1604 {
1605 tmpRgb = scanLine[widthIndex];
1606 if ( qRed( tmpRgb ) == 0 )
1607 {
1608 //black pixel, so zero distance
1609 dtArray[ idx ] = 0;
1610 }
1611 else
1612 {
1613 //white pixel, so initially set distance as infinite
1614 dtArray[ idx ] = INF;
1615 }
1616 idx++;
1617 }
1618 }
1619
1620 //calculate squared distance transform
1621 distanceTransform2d( dtArray, width, height, context );
1622
1623 return dtArray;
1624}
1625
1626void QgsShapeburstFillSymbolLayer::dtArrayToQImage( double *array, QImage *im, QgsColorRamp *ramp, QgsRenderContext &context, bool useWholeShape, int maxPixelDistance )
1627{
1628 int width = im->width();
1629 int height = im->height();
1630
1631 //find maximum distance value
1632 double maxDistanceValue;
1633
1634 if ( useWholeShape )
1635 {
1636 //no max distance specified in symbol properties, so calculate from maximum value in distance transform results
1637 double dtMaxValue = array[0];
1638 for ( std::size_t i = 1; i < static_cast< std::size_t >( width ) * height; ++i )
1639 {
1640 if ( array[i] > dtMaxValue )
1641 {
1642 dtMaxValue = array[i];
1643 }
1644 }
1645
1646 //values in distance transform are squared
1647 maxDistanceValue = std::sqrt( dtMaxValue );
1648 }
1649 else
1650 {
1651 //use max distance set in symbol properties
1652 maxDistanceValue = maxPixelDistance;
1653 }
1654
1655 //update the pixels in the provided QImage
1656 std::size_t idx = 0;
1657 double squaredVal = 0;
1658 double pixVal = 0;
1659
1660 for ( int heightIndex = 0; heightIndex < height; ++heightIndex )
1661 {
1662 if ( context.renderingStopped() )
1663 break;
1664
1665 QRgb *scanLine = reinterpret_cast< QRgb * >( im->scanLine( heightIndex ) );
1666 for ( int widthIndex = 0; widthIndex < width; ++widthIndex )
1667 {
1668 //result of distance transform
1669 squaredVal = array[idx];
1670
1671 //scale result to fit in the range [0, 1]
1672 if ( maxDistanceValue > 0 )
1673 {
1674 pixVal = squaredVal > 0 ? std::min( ( std::sqrt( squaredVal ) / maxDistanceValue ), 1.0 ) : 0;
1675 }
1676 else
1677 {
1678 pixVal = 1.0;
1679 }
1680
1681 //convert value to color from ramp
1682 //premultiply ramp color since we are storing this in a ARGB32_Premultiplied QImage
1683 scanLine[widthIndex] = qPremultiply( ramp->color( pixVal ).rgba() );
1684 idx++;
1685 }
1686 }
1687}
1688
1690{
1691 QVariantMap map;
1692 map[QStringLiteral( "color" )] = QgsColorUtils::colorToString( mColor );
1693 map[QStringLiteral( "gradient_color2" )] = QgsColorUtils::colorToString( mColor2 );
1694 map[QStringLiteral( "color_type" )] = QString::number( static_cast< int >( mColorType ) );
1695 map[QStringLiteral( "blur_radius" )] = QString::number( mBlurRadius );
1696 map[QStringLiteral( "use_whole_shape" )] = QString::number( mUseWholeShape );
1697 map[QStringLiteral( "max_distance" )] = QString::number( mMaxDistance );
1698 map[QStringLiteral( "distance_unit" )] = QgsUnitTypes::encodeUnit( mDistanceUnit );
1699 map[QStringLiteral( "distance_map_unit_scale" )] = QgsSymbolLayerUtils::encodeMapUnitScale( mDistanceMapUnitScale );
1700 map[QStringLiteral( "ignore_rings" )] = QString::number( mIgnoreRings );
1701 map[QStringLiteral( "offset" )] = QgsSymbolLayerUtils::encodePoint( mOffset );
1702 map[QStringLiteral( "offset_unit" )] = QgsUnitTypes::encodeUnit( mOffsetUnit );
1703 map[QStringLiteral( "offset_map_unit_scale" )] = QgsSymbolLayerUtils::encodeMapUnitScale( mOffsetMapUnitScale );
1704 if ( mGradientRamp )
1705 {
1706 map.insert( mGradientRamp->properties() );
1707 }
1708
1709 return map;
1710}
1711
1713{
1714 std::unique_ptr< QgsShapeburstFillSymbolLayer > sl = std::make_unique< QgsShapeburstFillSymbolLayer >( mColor, mColor2, mColorType, mBlurRadius, mUseWholeShape, mMaxDistance );
1715 if ( mGradientRamp )
1716 {
1717 sl->setColorRamp( mGradientRamp->clone() );
1718 }
1719 sl->setDistanceUnit( mDistanceUnit );
1720 sl->setDistanceMapUnitScale( mDistanceMapUnitScale );
1721 sl->setIgnoreRings( mIgnoreRings );
1722 sl->setOffset( mOffset );
1723 sl->setOffsetUnit( mOffsetUnit );
1724 sl->setOffsetMapUnitScale( mOffsetMapUnitScale );
1725 copyDataDefinedProperties( sl.get() );
1726 copyPaintEffect( sl.get() );
1727 return sl.release();
1728}
1729
1731{
1732 double offsetBleed = context.convertToPainterUnits( std::max( std::fabs( mOffset.x() ), std::fabs( mOffset.y() ) ), mOffsetUnit, mOffsetMapUnitScale );
1733 return offsetBleed;
1734}
1735
1740
1742{
1743 mDistanceUnit = unit;
1744 mOffsetUnit = unit;
1745}
1746
1748{
1749 if ( mDistanceUnit == mOffsetUnit )
1750 {
1751 return mDistanceUnit;
1752 }
1754}
1755
1757{
1758 return mDistanceUnit == Qgis::RenderUnit::MapUnits || mDistanceUnit == Qgis::RenderUnit::MetersInMapUnits
1759 || mOffsetUnit == Qgis::RenderUnit::MapUnits || mOffsetUnit == Qgis::RenderUnit::MetersInMapUnits;
1760}
1761
1763{
1764 mDistanceMapUnitScale = scale;
1765 mOffsetMapUnitScale = scale;
1766}
1767
1769{
1770 if ( mDistanceMapUnitScale == mOffsetMapUnitScale )
1771 {
1772 return mDistanceMapUnitScale;
1773 }
1774 return QgsMapUnitScale();
1775}
1776
1777
1778//QgsImageFillSymbolLayer
1779
1783
1785
1786void QgsImageFillSymbolLayer::renderPolygon( const QPolygonF &points, const QVector<QPolygonF> *rings, QgsSymbolRenderContext &context )
1787{
1788 QPainter *p = context.renderContext().painter();
1789 if ( !p )
1790 {
1791 return;
1792 }
1793
1795 applyDataDefinedSettings( context );
1796
1797 p->setPen( QPen( Qt::NoPen ) );
1798
1799 QTransform bkTransform = mBrush.transform();
1800 if ( applyBrushTransformFromContext( &context ) && !context.renderContext().textureOrigin().isNull() )
1801 {
1802 QPointF leftCorner = context.renderContext().textureOrigin();
1803 QTransform t = mBrush.transform();
1804 t.translate( leftCorner.x(), leftCorner.y() );
1805 mBrush.setTransform( t );
1806 }
1807 else
1808 {
1809 QTransform t = mBrush.transform();
1810 t.translate( 0, 0 );
1811 mBrush.setTransform( t );
1812 }
1813
1814 const bool useSelectedColor = shouldRenderUsingSelectionColor( context );
1815 if ( useSelectedColor )
1816 {
1817 QColor selColor = context.renderContext().selectionColor();
1818 p->setBrush( QBrush( selColor ) );
1819 _renderPolygon( p, points, rings, context );
1820 }
1821
1822 if ( !qgsDoubleNear( mNextAngle, 0.0 ) )
1823 {
1824 QTransform t = mBrush.transform();
1825 t.rotate( mNextAngle );
1826 mBrush.setTransform( t );
1827 }
1828 p->setBrush( mBrush );
1829 _renderPolygon( p, points, rings, context );
1830
1831 mBrush.setTransform( bkTransform );
1832}
1833
1838
1843
1848
1853
1864
1866{
1867 return Qt::SolidLine;
1868#if 0
1869 if ( !mStroke )
1870 {
1871 return Qt::SolidLine;
1872 }
1873 else
1874 {
1875 return mStroke->dxfPenStyle();
1876 }
1877#endif //0
1878}
1879
1881{
1882 QVariantMap map;
1883 map.insert( QStringLiteral( "coordinate_reference" ), QgsSymbolLayerUtils::encodeCoordinateReference( mCoordinateReference ) );
1884 return map;
1885}
1886
1905
1906
1907//QgsSVGFillSymbolLayer
1908
1909QgsSVGFillSymbolLayer::QgsSVGFillSymbolLayer( const QString &svgFilePath, double width, double angle )
1911 , mPatternWidth( width )
1912{
1913 mStrokeWidth = 0.3;
1914 mAngle = angle;
1915 mColor = QColor( 255, 255, 255 );
1917}
1918
1919QgsSVGFillSymbolLayer::QgsSVGFillSymbolLayer( const QByteArray &svgData, double width, double angle )
1921 , mPatternWidth( width )
1922 , mSvgData( svgData )
1923{
1924 storeViewBox();
1925 mStrokeWidth = 0.3;
1926 mAngle = angle;
1927 mColor = QColor( 255, 255, 255 );
1928 setDefaultSvgParams();
1929}
1930
1932
1934{
1936 mPatternWidthUnit = unit;
1937 mSvgStrokeWidthUnit = unit;
1938 mStrokeWidthUnit = unit;
1939 if ( mStroke )
1940 mStroke->setOutputUnit( unit );
1941}
1942
1944{
1946 if ( mPatternWidthUnit != unit || mSvgStrokeWidthUnit != unit || mStrokeWidthUnit != unit )
1947 {
1949 }
1950 return unit;
1951}
1952
1954{
1956 mPatternWidthMapUnitScale = scale;
1957 mSvgStrokeWidthMapUnitScale = scale;
1958}
1959
1961{
1962 if ( QgsImageFillSymbolLayer::mapUnitScale() == mPatternWidthMapUnitScale &&
1963 mPatternWidthMapUnitScale == mSvgStrokeWidthMapUnitScale &&
1964 mSvgStrokeWidthMapUnitScale == mStrokeWidthMapUnitScale )
1965 {
1966 return mPatternWidthMapUnitScale;
1967 }
1968 return QgsMapUnitScale();
1969}
1970
1971void QgsSVGFillSymbolLayer::setSvgFilePath( const QString &svgPath )
1972{
1973 mSvgData = QgsApplication::svgCache()->getImageData( svgPath );
1974 storeViewBox();
1975
1976 mSvgFilePath = svgPath;
1977 setDefaultSvgParams();
1978}
1979
1980QgsSymbolLayer *QgsSVGFillSymbolLayer::create( const QVariantMap &properties )
1981{
1982 QByteArray data;
1983 double width = 20;
1984 QString svgFilePath;
1985 double angle = 0.0;
1986
1987 if ( properties.contains( QStringLiteral( "width" ) ) )
1988 {
1989 width = properties[QStringLiteral( "width" )].toDouble();
1990 }
1991 if ( properties.contains( QStringLiteral( "svgFile" ) ) )
1992 {
1993 svgFilePath = properties[QStringLiteral( "svgFile" )].toString();
1994 }
1995 if ( properties.contains( QStringLiteral( "angle" ) ) )
1996 {
1997 angle = properties[QStringLiteral( "angle" )].toDouble();
1998 }
1999
2000 std::unique_ptr< QgsSVGFillSymbolLayer > symbolLayer;
2001 if ( !svgFilePath.isEmpty() )
2002 {
2003 symbolLayer = std::make_unique< QgsSVGFillSymbolLayer >( svgFilePath, width, angle );
2004 }
2005 else
2006 {
2007 if ( properties.contains( QStringLiteral( "data" ) ) )
2008 {
2009 data = QByteArray::fromHex( properties[QStringLiteral( "data" )].toString().toLocal8Bit() );
2010 }
2011 symbolLayer = std::make_unique< QgsSVGFillSymbolLayer >( data, width, angle );
2012 }
2013
2014 //svg parameters
2015 if ( properties.contains( QStringLiteral( "svgFillColor" ) ) )
2016 {
2017 //pre 2.5 projects used "svgFillColor"
2018 symbolLayer->setSvgFillColor( QgsColorUtils::colorFromString( properties[QStringLiteral( "svgFillColor" )].toString() ) );
2019 }
2020 else if ( properties.contains( QStringLiteral( "color" ) ) )
2021 {
2022 symbolLayer->setSvgFillColor( QgsColorUtils::colorFromString( properties[QStringLiteral( "color" )].toString() ) );
2023 }
2024 if ( properties.contains( QStringLiteral( "svgOutlineColor" ) ) )
2025 {
2026 //pre 2.5 projects used "svgOutlineColor"
2027 symbolLayer->setSvgStrokeColor( QgsColorUtils::colorFromString( properties[QStringLiteral( "svgOutlineColor" )].toString() ) );
2028 }
2029 else if ( properties.contains( QStringLiteral( "outline_color" ) ) )
2030 {
2031 symbolLayer->setSvgStrokeColor( QgsColorUtils::colorFromString( properties[QStringLiteral( "outline_color" )].toString() ) );
2032 }
2033 else if ( properties.contains( QStringLiteral( "line_color" ) ) )
2034 {
2035 symbolLayer->setSvgStrokeColor( QgsColorUtils::colorFromString( properties[QStringLiteral( "line_color" )].toString() ) );
2036 }
2037 if ( properties.contains( QStringLiteral( "svgOutlineWidth" ) ) )
2038 {
2039 //pre 2.5 projects used "svgOutlineWidth"
2040 symbolLayer->setSvgStrokeWidth( properties[QStringLiteral( "svgOutlineWidth" )].toDouble() );
2041 }
2042 else if ( properties.contains( QStringLiteral( "outline_width" ) ) )
2043 {
2044 symbolLayer->setSvgStrokeWidth( properties[QStringLiteral( "outline_width" )].toDouble() );
2045 }
2046 else if ( properties.contains( QStringLiteral( "line_width" ) ) )
2047 {
2048 symbolLayer->setSvgStrokeWidth( properties[QStringLiteral( "line_width" )].toDouble() );
2049 }
2050
2051 //units
2052 if ( properties.contains( QStringLiteral( "pattern_width_unit" ) ) )
2053 {
2054 symbolLayer->setPatternWidthUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "pattern_width_unit" )].toString() ) );
2055 }
2056 if ( properties.contains( QStringLiteral( "pattern_width_map_unit_scale" ) ) )
2057 {
2058 symbolLayer->setPatternWidthMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "pattern_width_map_unit_scale" )].toString() ) );
2059 }
2060 if ( properties.contains( QStringLiteral( "svg_outline_width_unit" ) ) )
2061 {
2062 symbolLayer->setSvgStrokeWidthUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "svg_outline_width_unit" )].toString() ) );
2063 }
2064 if ( properties.contains( QStringLiteral( "svg_outline_width_map_unit_scale" ) ) )
2065 {
2066 symbolLayer->setSvgStrokeWidthMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "svg_outline_width_map_unit_scale" )].toString() ) );
2067 }
2068 if ( properties.contains( QStringLiteral( "outline_width_unit" ) ) )
2069 {
2070 symbolLayer->setStrokeWidthUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "outline_width_unit" )].toString() ) );
2071 }
2072 if ( properties.contains( QStringLiteral( "outline_width_map_unit_scale" ) ) )
2073 {
2074 symbolLayer->setStrokeWidthMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "outline_width_map_unit_scale" )].toString() ) );
2075 }
2076
2077 if ( properties.contains( QStringLiteral( "parameters" ) ) )
2078 {
2079 const QVariantMap parameters = properties[QStringLiteral( "parameters" )].toMap();
2080 symbolLayer->setParameters( QgsProperty::variantMapToPropertyMap( parameters ) );
2081 }
2082
2083 symbolLayer->restoreOldDataDefinedProperties( properties );
2084
2085 return symbolLayer.release();
2086}
2087
2088void QgsSVGFillSymbolLayer::resolvePaths( QVariantMap &properties, const QgsPathResolver &pathResolver, bool saving )
2089{
2090 QVariantMap::iterator it = properties.find( QStringLiteral( "svgFile" ) );
2091 if ( it != properties.end() )
2092 {
2093 if ( saving )
2094 it.value() = QgsSymbolLayerUtils::svgSymbolPathToName( it.value().toString(), pathResolver );
2095 else
2096 it.value() = QgsSymbolLayerUtils::svgSymbolNameToPath( it.value().toString(), pathResolver );
2097 }
2098}
2099
2101{
2102 return QStringLiteral( "SVGFill" );
2103}
2104
2105void QgsSVGFillSymbolLayer::applyPattern( QBrush &brush, const QString &svgFilePath, double patternWidth, Qgis::RenderUnit patternWidthUnit,
2106 const QColor &svgFillColor, const QColor &svgStrokeColor, double svgStrokeWidth,
2107 Qgis::RenderUnit svgStrokeWidthUnit, const QgsSymbolRenderContext &context,
2108 const QgsMapUnitScale &patternWidthMapUnitScale, const QgsMapUnitScale &svgStrokeWidthMapUnitScale, const QgsStringMap svgParameters )
2109{
2110 if ( mSvgViewBox.isNull() )
2111 {
2112 return;
2113 }
2114
2116
2117 if ( static_cast< int >( size ) < 1.0 || 10000.0 < size )
2118 {
2119 brush.setTextureImage( QImage() );
2120 }
2121 else
2122 {
2123 bool fitsInCache = true;
2125 QImage patternImage = QgsApplication::svgCache()->svgAsImage( svgFilePath, size, svgFillColor, svgStrokeColor, strokeWidth,
2126 context.renderContext().scaleFactor(), fitsInCache, 0, ( context.renderContext().flags() & Qgis::RenderContextFlag::RenderBlocking ), svgParameters );
2127 if ( !fitsInCache )
2128 {
2129 QPicture patternPict = QgsApplication::svgCache()->svgAsPicture( svgFilePath, size, svgFillColor, svgStrokeColor, strokeWidth,
2130 context.renderContext().scaleFactor(), false, 0, ( context.renderContext().flags() & Qgis::RenderContextFlag::RenderBlocking ) );
2131 double hwRatio = 1.0;
2132 if ( patternPict.width() > 0 )
2133 {
2134 hwRatio = static_cast< double >( patternPict.height() ) / static_cast< double >( patternPict.width() );
2135 }
2136 patternImage = QImage( static_cast< int >( size ), static_cast< int >( size * hwRatio ), QImage::Format_ARGB32_Premultiplied );
2137 patternImage.fill( 0 ); // transparent background
2138
2139 QPainter p( &patternImage );
2140 p.drawPicture( QPointF( size / 2, size * hwRatio / 2 ), patternPict );
2141 }
2142
2143 QTransform brushTransform;
2144 if ( !qgsDoubleNear( context.opacity(), 1.0 ) )
2145 {
2146 QImage transparentImage = patternImage.copy();
2147 QgsSymbolLayerUtils::multiplyImageOpacity( &transparentImage, context.opacity() );
2148 brush.setTextureImage( transparentImage );
2149 }
2150 else
2151 {
2152 brush.setTextureImage( patternImage );
2153 }
2154 brush.setTransform( brushTransform );
2155 }
2156}
2157
2159{
2160 QgsStringMap evaluatedParameters = QgsSymbolLayerUtils::evaluatePropertiesMap( mParameters, context.renderContext().expressionContext() );
2161
2162 applyPattern( mBrush, mSvgFilePath, mPatternWidth, mPatternWidthUnit, mColor, mSvgStrokeColor, mSvgStrokeWidth, mSvgStrokeWidthUnit, context, mPatternWidthMapUnitScale, mSvgStrokeWidthMapUnitScale, evaluatedParameters );
2163
2164 if ( mStroke )
2165 {
2166 mStroke->setRenderHints( mStroke->renderHints() | Qgis::SymbolRenderHint::IsSymbolLayerSubSymbol );
2167 mStroke->startRender( context.renderContext(), context.fields() );
2168 }
2169}
2170
2172{
2173 if ( mStroke )
2174 {
2175 mStroke->stopRender( context.renderContext() );
2176 }
2177}
2178
2179void QgsSVGFillSymbolLayer::renderPolygon( const QPolygonF &points, const QVector<QPolygonF> *rings, QgsSymbolRenderContext &context )
2180{
2181 QgsImageFillSymbolLayer::renderPolygon( points, rings, context );
2182
2183 if ( mStroke )
2184 {
2185 const bool useSelectedColor = SELECT_FILL_BORDER && shouldRenderUsingSelectionColor( context );
2186 mStroke->renderPolyline( points, context.feature(), context.renderContext(), -1, useSelectedColor );
2187 if ( rings )
2188 {
2189 for ( auto ringIt = rings->constBegin(); ringIt != rings->constEnd(); ++ringIt )
2190 {
2191 mStroke->renderPolyline( *ringIt, context.feature(), context.renderContext(), -1, useSelectedColor );
2192 }
2193 }
2194 }
2195}
2196
2198{
2199 QVariantMap map;
2200 if ( !mSvgFilePath.isEmpty() )
2201 {
2202 map.insert( QStringLiteral( "svgFile" ), mSvgFilePath );
2203 }
2204 else
2205 {
2206 map.insert( QStringLiteral( "data" ), QString( mSvgData.toHex() ) );
2207 }
2208
2209 map.insert( QStringLiteral( "width" ), QString::number( mPatternWidth ) );
2210 map.insert( QStringLiteral( "angle" ), QString::number( mAngle ) );
2211
2212 //svg parameters
2213 map.insert( QStringLiteral( "color" ), QgsColorUtils::colorToString( mColor ) );
2214 map.insert( QStringLiteral( "outline_color" ), QgsColorUtils::colorToString( mSvgStrokeColor ) );
2215 map.insert( QStringLiteral( "outline_width" ), QString::number( mSvgStrokeWidth ) );
2216
2217 //units
2218 map.insert( QStringLiteral( "pattern_width_unit" ), QgsUnitTypes::encodeUnit( mPatternWidthUnit ) );
2219 map.insert( QStringLiteral( "pattern_width_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mPatternWidthMapUnitScale ) );
2220 map.insert( QStringLiteral( "svg_outline_width_unit" ), QgsUnitTypes::encodeUnit( mSvgStrokeWidthUnit ) );
2221 map.insert( QStringLiteral( "svg_outline_width_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mSvgStrokeWidthMapUnitScale ) );
2222 map.insert( QStringLiteral( "outline_width_unit" ), QgsUnitTypes::encodeUnit( mStrokeWidthUnit ) );
2223 map.insert( QStringLiteral( "outline_width_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mStrokeWidthMapUnitScale ) );
2224
2225 map[QStringLiteral( "parameters" )] = QgsProperty::propertyMapToVariantMap( mParameters );
2226
2227 return map;
2228}
2229
2231{
2232 std::unique_ptr< QgsSVGFillSymbolLayer > clonedLayer;
2233 if ( !mSvgFilePath.isEmpty() )
2234 {
2235 clonedLayer = std::make_unique< QgsSVGFillSymbolLayer >( mSvgFilePath, mPatternWidth, mAngle );
2236 clonedLayer->setSvgFillColor( mColor );
2237 clonedLayer->setSvgStrokeColor( mSvgStrokeColor );
2238 clonedLayer->setSvgStrokeWidth( mSvgStrokeWidth );
2239 }
2240 else
2241 {
2242 clonedLayer = std::make_unique< QgsSVGFillSymbolLayer >( mSvgData, mPatternWidth, mAngle );
2243 }
2244
2245 clonedLayer->setPatternWidthUnit( mPatternWidthUnit );
2246 clonedLayer->setPatternWidthMapUnitScale( mPatternWidthMapUnitScale );
2247 clonedLayer->setSvgStrokeWidthUnit( mSvgStrokeWidthUnit );
2248 clonedLayer->setSvgStrokeWidthMapUnitScale( mSvgStrokeWidthMapUnitScale );
2249 clonedLayer->setStrokeWidthUnit( mStrokeWidthUnit );
2250 clonedLayer->setStrokeWidthMapUnitScale( mStrokeWidthMapUnitScale );
2251
2252 clonedLayer->setParameters( mParameters );
2253
2254 if ( mStroke )
2255 {
2256 clonedLayer->setSubSymbol( mStroke->clone() );
2257 }
2258 copyDataDefinedProperties( clonedLayer.get() );
2259 copyPaintEffect( clonedLayer.get() );
2260 return clonedLayer.release();
2261}
2262
2263void QgsSVGFillSymbolLayer::toSld( QDomDocument &doc, QDomElement &element, const QVariantMap &props ) const
2264{
2265 QDomElement symbolizerElem = doc.createElement( QStringLiteral( "se:PolygonSymbolizer" ) );
2266 if ( !props.value( QStringLiteral( "uom" ), QString() ).toString().isEmpty() )
2267 symbolizerElem.setAttribute( QStringLiteral( "uom" ), props.value( QStringLiteral( "uom" ), QString() ).toString() );
2268 element.appendChild( symbolizerElem );
2269
2270 QgsSymbolLayerUtils::createGeometryElement( doc, symbolizerElem, props.value( QStringLiteral( "geom" ), QString() ).toString() );
2271
2272 QDomElement fillElem = doc.createElement( QStringLiteral( "se:Fill" ) );
2273 symbolizerElem.appendChild( fillElem );
2274
2275 QDomElement graphicFillElem = doc.createElement( QStringLiteral( "se:GraphicFill" ) );
2276 fillElem.appendChild( graphicFillElem );
2277
2278 QDomElement graphicElem = doc.createElement( QStringLiteral( "se:Graphic" ) );
2279 graphicFillElem.appendChild( graphicElem );
2280
2281 if ( !mSvgFilePath.isEmpty() )
2282 {
2283 // encode a parametric SVG reference
2284 double patternWidth = QgsSymbolLayerUtils::rescaleUom( mPatternWidth, mPatternWidthUnit, props );
2285 double strokeWidth = QgsSymbolLayerUtils::rescaleUom( mSvgStrokeWidth, mSvgStrokeWidthUnit, props );
2286 QgsSymbolLayerUtils::parametricSvgToSld( doc, graphicElem, mSvgFilePath, mColor, patternWidth, mSvgStrokeColor, strokeWidth );
2287 }
2288 else
2289 {
2290 // TODO: create svg from data
2291 // <se:InlineContent>
2292 symbolizerElem.appendChild( doc.createComment( QStringLiteral( "SVG from data not implemented yet" ) ) );
2293 }
2294
2295 // <Rotation>
2296 QString angleFunc;
2297 bool ok;
2298 double angle = props.value( QStringLiteral( "angle" ), QStringLiteral( "0" ) ).toDouble( &ok );
2299 if ( !ok )
2300 {
2301 angleFunc = QStringLiteral( "%1 + %2" ).arg( props.value( QStringLiteral( "angle" ), QStringLiteral( "0" ) ).toString() ).arg( mAngle );
2302 }
2303 else if ( !qgsDoubleNear( angle + mAngle, 0.0 ) )
2304 {
2305 angleFunc = QString::number( angle + mAngle );
2306 }
2307 QgsSymbolLayerUtils::createRotationElement( doc, graphicElem, angleFunc );
2308
2309 if ( mStroke )
2310 {
2311 // the stroke sub symbol should be stored within the Stroke element,
2312 // but it will be stored in a separated LineSymbolizer because it could
2313 // have more than one layer
2314 mStroke->toSld( doc, element, props );
2315 }
2316}
2317
2319{
2320 return mPatternWidthUnit == Qgis::RenderUnit::MapUnits || mPatternWidthUnit == Qgis::RenderUnit::MetersInMapUnits
2321 || mSvgStrokeWidthUnit == Qgis::RenderUnit::MapUnits || mSvgStrokeWidthUnit == Qgis::RenderUnit::MetersInMapUnits;
2322}
2323
2325{
2326 return mStroke.get();
2327}
2328
2330{
2331 if ( !symbol ) //unset current stroke
2332 {
2333 mStroke.reset( nullptr );
2334 return true;
2335 }
2336
2337 if ( symbol->type() != Qgis::SymbolType::Line )
2338 {
2339 delete symbol;
2340 return false;
2341 }
2342
2343 QgsLineSymbol *lineSymbol = dynamic_cast<QgsLineSymbol *>( symbol );
2344 if ( lineSymbol )
2345 {
2346 mStroke.reset( lineSymbol );
2347 return true;
2348 }
2349
2350 delete symbol;
2351 return false;
2352}
2353
2355{
2356 if ( mStroke && mStroke->symbolLayer( 0 ) )
2357 {
2358 double subLayerBleed = mStroke->symbolLayer( 0 )->estimateMaxBleed( context );
2359 return subLayerBleed;
2360 }
2361 return 0;
2362}
2363
2365{
2366 Q_UNUSED( context )
2367 if ( !mStroke )
2368 {
2369 return QColor( Qt::black );
2370 }
2371 return mStroke->color();
2372}
2373
2374QSet<QString> QgsSVGFillSymbolLayer::usedAttributes( const QgsRenderContext &context ) const
2375{
2376 QSet<QString> attr = QgsImageFillSymbolLayer::usedAttributes( context );
2377 if ( mStroke )
2378 attr.unite( mStroke->usedAttributes( context ) );
2379 return attr;
2380}
2381
2383{
2385 return true;
2386 if ( mStroke && mStroke->hasDataDefinedProperties() )
2387 return true;
2388 return false;
2389}
2390
2392{
2393 QString path, mimeType;
2394 QColor fillColor, strokeColor;
2395 Qt::PenStyle penStyle;
2396 double size, strokeWidth;
2397
2398 QDomElement fillElem = element.firstChildElement( QStringLiteral( "Fill" ) );
2399 if ( fillElem.isNull() )
2400 return nullptr;
2401
2402 QDomElement graphicFillElem = fillElem.firstChildElement( QStringLiteral( "GraphicFill" ) );
2403 if ( graphicFillElem.isNull() )
2404 return nullptr;
2405
2406 QDomElement graphicElem = graphicFillElem.firstChildElement( QStringLiteral( "Graphic" ) );
2407 if ( graphicElem.isNull() )
2408 return nullptr;
2409
2410 if ( !QgsSymbolLayerUtils::externalGraphicFromSld( graphicElem, path, mimeType, fillColor, size ) )
2411 return nullptr;
2412
2413 if ( mimeType != QLatin1String( "image/svg+xml" ) )
2414 return nullptr;
2415
2416 QgsSymbolLayerUtils::lineFromSld( graphicElem, penStyle, strokeColor, strokeWidth );
2417
2418 double scaleFactor = 1.0;
2419 const QString uom = element.attribute( QStringLiteral( "uom" ) );
2420 Qgis::RenderUnit sldUnitSize = QgsSymbolLayerUtils::decodeSldUom( uom, &scaleFactor );
2421 size = size * scaleFactor;
2422 strokeWidth = strokeWidth * scaleFactor;
2423
2424 double angle = 0.0;
2425 QString angleFunc;
2426 if ( QgsSymbolLayerUtils::rotationFromSldElement( graphicElem, angleFunc ) )
2427 {
2428 bool ok;
2429 double d = angleFunc.toDouble( &ok );
2430 if ( ok )
2431 angle = d;
2432 }
2433
2434 std::unique_ptr< QgsSVGFillSymbolLayer > sl = std::make_unique< QgsSVGFillSymbolLayer >( path, size, angle );
2435 sl->setOutputUnit( sldUnitSize );
2436 sl->setSvgFillColor( fillColor );
2437 sl->setSvgStrokeColor( strokeColor );
2438 sl->setSvgStrokeWidth( strokeWidth );
2439
2440 // try to get the stroke
2441 QDomElement strokeElem = element.firstChildElement( QStringLiteral( "Stroke" ) );
2442 if ( !strokeElem.isNull() )
2443 {
2445 if ( l )
2446 {
2447 QgsSymbolLayerList layers;
2448 layers.append( l );
2449 sl->setSubSymbol( new QgsLineSymbol( layers ) );
2450 }
2451 }
2452
2453 return sl.release();
2454}
2455
2457{
2461 {
2462 return; //no data defined settings
2463 }
2464
2466 {
2469 }
2470
2471 double width = mPatternWidth;
2473 {
2474 context.setOriginalValueVariable( mPatternWidth );
2476 }
2477 QString svgFile = mSvgFilePath;
2479 {
2480 context.setOriginalValueVariable( mSvgFilePath );
2482 context.renderContext().pathResolver() );
2483 }
2484 QColor svgFillColor = mColor;
2486 {
2489 }
2490 QColor svgStrokeColor = mSvgStrokeColor;
2492 {
2493 context.setOriginalValueVariable( QgsSymbolLayerUtils::encodeColor( mSvgStrokeColor ) );
2495 }
2496 double strokeWidth = mSvgStrokeWidth;
2498 {
2499 context.setOriginalValueVariable( mSvgStrokeWidth );
2501 }
2502 QgsStringMap evaluatedParameters = QgsSymbolLayerUtils::evaluatePropertiesMap( mParameters, context.renderContext().expressionContext() );
2503
2504 applyPattern( mBrush, svgFile, width, mPatternWidthUnit, svgFillColor, svgStrokeColor, strokeWidth,
2505 mSvgStrokeWidthUnit, context, mPatternWidthMapUnitScale, mSvgStrokeWidthMapUnitScale, evaluatedParameters );
2506
2507}
2508
2509void QgsSVGFillSymbolLayer::storeViewBox()
2510{
2511 if ( !mSvgData.isEmpty() )
2512 {
2513 QSvgRenderer r( mSvgData );
2514 if ( r.isValid() )
2515 {
2516 mSvgViewBox = r.viewBoxF();
2517 return;
2518 }
2519 }
2520
2521 mSvgViewBox = QRectF();
2522}
2523
2524void QgsSVGFillSymbolLayer::setDefaultSvgParams()
2525{
2526 if ( mSvgFilePath.isEmpty() )
2527 {
2528 return;
2529 }
2530
2531 bool hasFillParam, hasFillOpacityParam, hasStrokeParam, hasStrokeWidthParam, hasStrokeOpacityParam;
2532 bool hasDefaultFillColor, hasDefaultFillOpacity, hasDefaultStrokeColor, hasDefaultStrokeWidth, hasDefaultStrokeOpacity;
2533 QColor defaultFillColor, defaultStrokeColor;
2534 double defaultStrokeWidth, defaultFillOpacity, defaultStrokeOpacity;
2535 QgsApplication::svgCache()->containsParams( mSvgFilePath, hasFillParam, hasDefaultFillColor, defaultFillColor,
2536 hasFillOpacityParam, hasDefaultFillOpacity, defaultFillOpacity,
2537 hasStrokeParam, hasDefaultStrokeColor, defaultStrokeColor,
2538 hasStrokeWidthParam, hasDefaultStrokeWidth, defaultStrokeWidth,
2539 hasStrokeOpacityParam, hasDefaultStrokeOpacity, defaultStrokeOpacity );
2540
2541 double newFillOpacity = hasFillOpacityParam ? mColor.alphaF() : 1.0;
2542 double newStrokeOpacity = hasStrokeOpacityParam ? mSvgStrokeColor.alphaF() : 1.0;
2543
2544 if ( hasDefaultFillColor )
2545 {
2546 mColor = defaultFillColor;
2547 mColor.setAlphaF( newFillOpacity );
2548 }
2549 if ( hasDefaultFillOpacity )
2550 {
2551 mColor.setAlphaF( defaultFillOpacity );
2552 }
2553 if ( hasDefaultStrokeColor )
2554 {
2555 mSvgStrokeColor = defaultStrokeColor;
2556 mSvgStrokeColor.setAlphaF( newStrokeOpacity );
2557 }
2558 if ( hasDefaultStrokeOpacity )
2559 {
2560 mSvgStrokeColor.setAlphaF( defaultStrokeOpacity );
2561 }
2562 if ( hasDefaultStrokeWidth )
2563 {
2564 mSvgStrokeWidth = defaultStrokeWidth;
2565 }
2566}
2567
2568void QgsSVGFillSymbolLayer::setParameters( const QMap<QString, QgsProperty> &parameters )
2569{
2570 mParameters = parameters;
2571}
2572
2573
2576{
2577 mFillLineSymbol = std::make_unique<QgsLineSymbol>( );
2578 QgsImageFillSymbolLayer::setSubSymbol( nullptr ); //no stroke
2579}
2580
2582
2584{
2585 mFillLineSymbol->setWidth( w );
2586 mLineWidth = w;
2587}
2588
2590{
2591 mFillLineSymbol->setColor( c );
2592 mColor = c;
2593}
2594
2596{
2597 return mFillLineSymbol ? mFillLineSymbol->color() : mColor;
2598}
2599
2601{
2602 if ( !symbol )
2603 {
2604 return false;
2605 }
2606
2607 if ( symbol->type() == Qgis::SymbolType::Line )
2608 {
2609 mFillLineSymbol.reset( qgis::down_cast<QgsLineSymbol *>( symbol ) );
2610 return true;
2611 }
2612 delete symbol;
2613 return false;
2614}
2615
2617{
2618 return mFillLineSymbol.get();
2619}
2620
2622{
2623 QSet<QString> attr = QgsImageFillSymbolLayer::usedAttributes( context );
2624 if ( mFillLineSymbol )
2625 attr.unite( mFillLineSymbol->usedAttributes( context ) );
2626 return attr;
2627}
2628
2630{
2632 return true;
2633 if ( mFillLineSymbol && mFillLineSymbol->hasDataDefinedProperties() )
2634 return true;
2635 return false;
2636}
2637
2639{
2640 installMasks( context, true );
2641
2642 // The base class version passes this on to the subsymbol, but we deliberately don't do that here.
2643}
2644
2646{
2647 removeMasks( context, true );
2648
2649 // The base class version passes this on to the subsymbol, but we deliberately don't do that here.
2650}
2651
2653{
2654
2655 double lineAngleRad { qDegreesToRadians( mLineAngle ) };
2656
2657 const int quadrant { static_cast<int>( lineAngleRad / M_PI_2 ) };
2658 Q_ASSERT( quadrant >= 0 && quadrant <= 3 );
2659
2660 switch ( quadrant )
2661 {
2662 case 0:
2663 {
2664 break;
2665 }
2666 case 1:
2667 {
2668 lineAngleRad -= M_PI / 2;
2669 break;
2670 }
2671 case 2:
2672 {
2673 lineAngleRad -= M_PI;
2674 break;
2675 }
2676 case 3:
2677 {
2678 lineAngleRad -= M_PI + M_PI_2;
2679 break;
2680 }
2681 }
2682
2683
2684 double distancePx { QgsSymbolLayerUtils::rescaleUom( mDistance, mDistanceUnit, {} ) };
2685
2686 QSize size { static_cast<int>( distancePx ), static_cast<int>( distancePx ) };
2687
2688 if ( static_cast<int>( mLineAngle ) % 90 != 0 )
2689 {
2690 size = QSize( static_cast<int>( distancePx / std::sin( lineAngleRad ) ), static_cast<int>( distancePx / std::cos( lineAngleRad ) ) );
2691 }
2692
2693 QPixmap pixmap( size );
2694 pixmap.fill( Qt::transparent );
2695 QPainter painter;
2696 painter.begin( &pixmap );
2697 painter.setRenderHint( QPainter::Antialiasing );
2698 QgsRenderContext renderContext = QgsRenderContext::fromQPainter( &painter );
2702 renderContext.setForceVectorOutput( true );
2703 QgsSymbolRenderContext symbolContext( renderContext, Qgis::RenderUnit::Pixels, 1.0, false, Qgis::SymbolRenderHints() );
2704
2705 std::unique_ptr< QgsLinePatternFillSymbolLayer > layerClone( clone() );
2706 layerClone->setOffset( 0 );
2707 layerClone->drawPreviewIcon( symbolContext, pixmap.size() );
2708 painter.end();
2709 return pixmap.toImage();
2710 return QImage();
2711}
2712
2714{
2715 return 0;
2716}
2717
2719{
2721 mDistanceUnit = unit;
2722 mLineWidthUnit = unit;
2723 mOffsetUnit = unit;
2724
2725 if ( mFillLineSymbol )
2726 mFillLineSymbol->setOutputUnit( unit );
2727}
2728
2730{
2732 if ( mDistanceUnit != unit || mLineWidthUnit != unit || ( mOffsetUnit != unit && mOffsetUnit != Qgis::RenderUnit::Percentage ) )
2733 {
2735 }
2736 return unit;
2737}
2738
2740{
2741 return mDistanceUnit == Qgis::RenderUnit::MapUnits || mDistanceUnit == Qgis::RenderUnit::MetersInMapUnits
2742 || mLineWidthUnit == Qgis::RenderUnit::MapUnits || mLineWidthUnit == Qgis::RenderUnit::MetersInMapUnits
2743 || mOffsetUnit == Qgis::RenderUnit::MapUnits || mOffsetUnit == Qgis::RenderUnit::MetersInMapUnits;
2744}
2745
2747{
2749 mDistanceMapUnitScale = scale;
2750 mLineWidthMapUnitScale = scale;
2751 mOffsetMapUnitScale = scale;
2752}
2753
2755{
2756 if ( QgsImageFillSymbolLayer::mapUnitScale() == mDistanceMapUnitScale &&
2757 mDistanceMapUnitScale == mLineWidthMapUnitScale &&
2758 mLineWidthMapUnitScale == mOffsetMapUnitScale )
2759 {
2760 return mDistanceMapUnitScale;
2761 }
2762 return QgsMapUnitScale();
2763}
2764
2766{
2767 std::unique_ptr< QgsLinePatternFillSymbolLayer > patternLayer = std::make_unique< QgsLinePatternFillSymbolLayer >();
2768
2769 //default values
2770 double lineAngle = 45;
2771 double distance = 5;
2772 double lineWidth = 0.5;
2773 QColor color( Qt::black );
2774 double offset = 0.0;
2775
2776 if ( properties.contains( QStringLiteral( "lineangle" ) ) )
2777 {
2778 //pre 2.5 projects used "lineangle"
2779 lineAngle = properties[QStringLiteral( "lineangle" )].toDouble();
2780 }
2781 else if ( properties.contains( QStringLiteral( "angle" ) ) )
2782 {
2783 lineAngle = properties[QStringLiteral( "angle" )].toDouble();
2784 }
2785 patternLayer->setLineAngle( lineAngle );
2786
2787 if ( properties.contains( QStringLiteral( "distance" ) ) )
2788 {
2789 distance = properties[QStringLiteral( "distance" )].toDouble();
2790 }
2791 patternLayer->setDistance( distance );
2792
2793 if ( properties.contains( QStringLiteral( "linewidth" ) ) )
2794 {
2795 //pre 2.5 projects used "linewidth"
2796 lineWidth = properties[QStringLiteral( "linewidth" )].toDouble();
2797 }
2798 else if ( properties.contains( QStringLiteral( "outline_width" ) ) )
2799 {
2800 lineWidth = properties[QStringLiteral( "outline_width" )].toDouble();
2801 }
2802 else if ( properties.contains( QStringLiteral( "line_width" ) ) )
2803 {
2804 lineWidth = properties[QStringLiteral( "line_width" )].toDouble();
2805 }
2806 patternLayer->setLineWidth( lineWidth );
2807
2808 if ( properties.contains( QStringLiteral( "color" ) ) )
2809 {
2810 color = QgsColorUtils::colorFromString( properties[QStringLiteral( "color" )].toString() );
2811 }
2812 else if ( properties.contains( QStringLiteral( "outline_color" ) ) )
2813 {
2814 color = QgsColorUtils::colorFromString( properties[QStringLiteral( "outline_color" )].toString() );
2815 }
2816 else if ( properties.contains( QStringLiteral( "line_color" ) ) )
2817 {
2818 color = QgsColorUtils::colorFromString( properties[QStringLiteral( "line_color" )].toString() );
2819 }
2820 patternLayer->setColor( color );
2821
2822 if ( properties.contains( QStringLiteral( "offset" ) ) )
2823 {
2824 offset = properties[QStringLiteral( "offset" )].toDouble();
2825 }
2826 patternLayer->setOffset( offset );
2827
2828
2829 if ( properties.contains( QStringLiteral( "distance_unit" ) ) )
2830 {
2831 patternLayer->setDistanceUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "distance_unit" )].toString() ) );
2832 }
2833 if ( properties.contains( QStringLiteral( "distance_map_unit_scale" ) ) )
2834 {
2835 patternLayer->setDistanceMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "distance_map_unit_scale" )].toString() ) );
2836 }
2837 if ( properties.contains( QStringLiteral( "line_width_unit" ) ) )
2838 {
2839 patternLayer->setLineWidthUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "line_width_unit" )].toString() ) );
2840 }
2841 else if ( properties.contains( QStringLiteral( "outline_width_unit" ) ) )
2842 {
2843 patternLayer->setLineWidthUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "outline_width_unit" )].toString() ) );
2844 }
2845 if ( properties.contains( QStringLiteral( "line_width_map_unit_scale" ) ) )
2846 {
2847 patternLayer->setLineWidthMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "line_width_map_unit_scale" )].toString() ) );
2848 }
2849 if ( properties.contains( QStringLiteral( "offset_unit" ) ) )
2850 {
2851 patternLayer->setOffsetUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "offset_unit" )].toString() ) );
2852 }
2853 if ( properties.contains( QStringLiteral( "offset_map_unit_scale" ) ) )
2854 {
2855 patternLayer->setOffsetMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "offset_map_unit_scale" )].toString() ) );
2856 }
2857 if ( properties.contains( QStringLiteral( "outline_width_unit" ) ) )
2858 {
2859 patternLayer->setStrokeWidthUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "outline_width_unit" )].toString() ) );
2860 }
2861 if ( properties.contains( QStringLiteral( "outline_width_map_unit_scale" ) ) )
2862 {
2863 patternLayer->setStrokeWidthMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "outline_width_map_unit_scale" )].toString() ) );
2864 }
2865 if ( properties.contains( QStringLiteral( "coordinate_reference" ) ) )
2866 {
2867 patternLayer->setCoordinateReference( QgsSymbolLayerUtils::decodeCoordinateReference( properties[QStringLiteral( "coordinate_reference" )].toString() ) );
2868 }
2869 if ( properties.contains( QStringLiteral( "clip_mode" ) ) )
2870 {
2871 patternLayer->setClipMode( QgsSymbolLayerUtils::decodeLineClipMode( properties.value( QStringLiteral( "clip_mode" ) ).toString() ) );
2872 }
2873
2874 patternLayer->restoreOldDataDefinedProperties( properties );
2875
2876 return patternLayer.release();
2877}
2878
2880{
2881 return QStringLiteral( "LinePatternFill" );
2882}
2883
2884bool QgsLinePatternFillSymbolLayer::applyPattern( const QgsSymbolRenderContext &context, QBrush &brush, double lineAngle, double distance )
2885{
2886 mBrush.setTextureImage( QImage() ); // set empty in case we have to return
2887
2888 if ( !mFillLineSymbol )
2889 {
2890 return true;
2891 }
2892 // We have to make a copy because marker intervals will have to be adjusted
2893 std::unique_ptr< QgsLineSymbol > fillLineSymbol( mFillLineSymbol->clone() );
2894 if ( !fillLineSymbol )
2895 {
2896 return true;
2897 }
2898
2899 const QgsRenderContext &ctx = context.renderContext();
2900 //double strokePixelWidth = lineWidth * QgsSymbolLayerUtils::pixelSizeScaleFactor( ctx, mLineWidthUnit, mLineWidthMapUnitScale );
2901 double outputPixelDist = ctx.convertToPainterUnits( distance, mDistanceUnit, mDistanceMapUnitScale );
2902 double outputPixelOffset = mOffsetUnit == Qgis::RenderUnit::Percentage ? outputPixelDist * mOffset / 100
2903 : ctx.convertToPainterUnits( mOffset, mOffsetUnit, mOffsetMapUnitScale );
2904
2905 // NOTE: this may need to be modified if we ever change from a forced rasterized/brush approach,
2906 // because potentially we may want to allow vector based line pattern fills where the first line
2907 // is offset by a large distance
2908
2909 // fix truncated pattern with larger offsets
2910 outputPixelOffset = std::fmod( outputPixelOffset, outputPixelDist );
2911 if ( outputPixelOffset > outputPixelDist / 2.0 )
2912 outputPixelOffset -= outputPixelDist;
2913
2914 // To get all patterns into image, we have to consider symbols size (estimateMaxBleed()).
2915 // For marker lines we have to get markers interval.
2916 double outputPixelBleed = 0;
2917 double outputPixelInterval = 0; // maximum interval
2918 for ( int i = 0; i < fillLineSymbol->symbolLayerCount(); i++ )
2919 {
2920 QgsSymbolLayer *layer = fillLineSymbol->symbolLayer( i );
2921 double outputPixelLayerBleed = layer->estimateMaxBleed( context.renderContext() );
2922 outputPixelBleed = std::max( outputPixelBleed, outputPixelLayerBleed );
2923
2924 QgsMarkerLineSymbolLayer *markerLineLayer = dynamic_cast<QgsMarkerLineSymbolLayer *>( layer );
2925 if ( markerLineLayer )
2926 {
2927 double outputPixelLayerInterval = ctx.convertToPainterUnits( markerLineLayer->interval(), markerLineLayer->intervalUnit(), markerLineLayer->intervalMapUnitScale() );
2928
2929 // There may be multiple marker lines with different intervals.
2930 // In theory we should find the least common multiple, but that could be too
2931 // big (multiplication of intervals in the worst case).
2932 // Because patterns without small common interval would look strange, we
2933 // believe that the longest interval should usually be sufficient.
2934 outputPixelInterval = std::max( outputPixelInterval, outputPixelLayerInterval );
2935 }
2936 }
2937
2938 if ( outputPixelInterval > 0 )
2939 {
2940 // We have to adjust marker intervals to integer pixel size to get
2941 // repeatable pattern.
2942 double intervalScale = std::round( outputPixelInterval ) / outputPixelInterval;
2943 outputPixelInterval = std::round( outputPixelInterval );
2944
2945 for ( int i = 0; i < fillLineSymbol->symbolLayerCount(); i++ )
2946 {
2947 QgsSymbolLayer *layer = fillLineSymbol->symbolLayer( i );
2948
2949 QgsMarkerLineSymbolLayer *markerLineLayer = dynamic_cast<QgsMarkerLineSymbolLayer *>( layer );
2950 if ( markerLineLayer )
2951 {
2952 markerLineLayer->setInterval( intervalScale * markerLineLayer->interval() );
2953 }
2954 }
2955 }
2956
2957 //create image
2958 int height, width;
2959 lineAngle = std::fmod( lineAngle, 360 );
2960 if ( lineAngle < 0 )
2961 lineAngle += 360;
2962 if ( qgsDoubleNear( lineAngle, 0 ) || qgsDoubleNear( lineAngle, 360 ) || qgsDoubleNear( lineAngle, 180 ) )
2963 {
2964 height = outputPixelDist;
2965 width = outputPixelInterval > 0 ? outputPixelInterval : height;
2966 }
2967 else if ( qgsDoubleNear( lineAngle, 90 ) || qgsDoubleNear( lineAngle, 270 ) )
2968 {
2969 width = outputPixelDist;
2970 height = outputPixelInterval > 0 ? outputPixelInterval : width;
2971 }
2972 else
2973 {
2974 height = outputPixelDist / std::cos( lineAngle * M_PI / 180 ); //keep perpendicular distance between lines constant
2975 width = outputPixelDist / std::sin( lineAngle * M_PI / 180 );
2976
2977 // recalculate real angle and distance after rounding to pixels
2978 lineAngle = 180 * std::atan2( static_cast< double >( height ), static_cast< double >( width ) ) / M_PI;
2979 if ( lineAngle < 0 )
2980 {
2981 lineAngle += 360.;
2982 }
2983
2984 height = std::abs( height );
2985 width = std::abs( width );
2986
2987 outputPixelDist = std::abs( height * std::cos( lineAngle * M_PI / 180 ) );
2988
2989 // Round offset to correspond to one pixel height, otherwise lines may
2990 // be shifted on tile border if offset falls close to pixel center
2991 int offsetHeight = static_cast< int >( std::round( outputPixelOffset / std::cos( lineAngle * M_PI / 180 ) ) );
2992 outputPixelOffset = offsetHeight * std::cos( lineAngle * M_PI / 180 );
2993 }
2994
2995 //depending on the angle, we might need to render into a larger image and use a subset of it
2996 double dx = 0;
2997 double dy = 0;
2998
2999 // Add buffer based on bleed but keep precisely the height/width ratio (angle)
3000 // thus we add integer multiplications of width and height covering the bleed
3001 int bufferMulti = static_cast< int >( std::max( std::ceil( outputPixelBleed / width ), std::ceil( outputPixelBleed / width ) ) );
3002
3003 // Always buffer at least once so that center of line marker in upper right corner
3004 // does not fall outside due to representation error
3005 bufferMulti = std::max( bufferMulti, 1 );
3006
3007 int xBuffer = width * bufferMulti;
3008 int yBuffer = height * bufferMulti;
3009 int innerWidth = width;
3010 int innerHeight = height;
3011 width += 2 * xBuffer;
3012 height += 2 * yBuffer;
3013
3014 //protect from zero width/height image and symbol layer from eating too much memory
3015 if ( width > 2000 || height > 2000 || width == 0 || height == 0 )
3016 {
3017 return false;
3018 }
3019
3020 QImage patternImage( width, height, QImage::Format_ARGB32 );
3021 patternImage.fill( 0 );
3022
3023 QPointF p1, p2, p3, p4, p5, p6;
3024 if ( qgsDoubleNear( lineAngle, 0.0 ) || qgsDoubleNear( lineAngle, 360.0 ) || qgsDoubleNear( lineAngle, 180.0 ) )
3025 {
3026 p1 = QPointF( 0, yBuffer );
3027 p2 = QPointF( width, yBuffer );
3028 p3 = QPointF( 0, yBuffer + innerHeight );
3029 p4 = QPointF( width, yBuffer + innerHeight );
3030 }
3031 else if ( qgsDoubleNear( lineAngle, 90.0 ) || qgsDoubleNear( lineAngle, 270.0 ) )
3032 {
3033 p1 = QPointF( xBuffer, height );
3034 p2 = QPointF( xBuffer, 0 );
3035 p3 = QPointF( xBuffer + innerWidth, height );
3036 p4 = QPointF( xBuffer + innerWidth, 0 );
3037 }
3038 else if ( lineAngle > 0 && lineAngle < 90 )
3039 {
3040 dx = outputPixelDist * std::cos( ( 90 - lineAngle ) * M_PI / 180.0 );
3041 dy = outputPixelDist * std::sin( ( 90 - lineAngle ) * M_PI / 180.0 );
3042 p1 = QPointF( 0, height );
3043 p2 = QPointF( width, 0 );
3044 p3 = QPointF( -dx, height - dy );
3045 p4 = QPointF( width - dx, -dy );
3046 p5 = QPointF( dx, height + dy );
3047 p6 = QPointF( width + dx, dy );
3048 }
3049 else if ( lineAngle > 180 && lineAngle < 270 )
3050 {
3051 dx = outputPixelDist * std::cos( ( 90 - lineAngle ) * M_PI / 180.0 );
3052 dy = outputPixelDist * std::sin( ( 90 - lineAngle ) * M_PI / 180.0 );
3053 p1 = QPointF( width, 0 );
3054 p2 = QPointF( 0, height );
3055 p3 = QPointF( width - dx, -dy );
3056 p4 = QPointF( -dx, height - dy );
3057 p5 = QPointF( width + dx, dy );
3058 p6 = QPointF( dx, height + dy );
3059 }
3060 else if ( lineAngle > 90 && lineAngle < 180 )
3061 {
3062 dy = outputPixelDist * std::cos( ( 180 - lineAngle ) * M_PI / 180 );
3063 dx = outputPixelDist * std::sin( ( 180 - lineAngle ) * M_PI / 180 );
3064 p1 = QPointF( 0, 0 );
3065 p2 = QPointF( width, height );
3066 p5 = QPointF( dx, -dy );
3067 p6 = QPointF( width + dx, height - dy );
3068 p3 = QPointF( -dx, dy );
3069 p4 = QPointF( width - dx, height + dy );
3070 }
3071 else if ( lineAngle > 270 && lineAngle < 360 )
3072 {
3073 dy = outputPixelDist * std::cos( ( 180 - lineAngle ) * M_PI / 180 );
3074 dx = outputPixelDist * std::sin( ( 180 - lineAngle ) * M_PI / 180 );
3075 p1 = QPointF( width, height );
3076 p2 = QPointF( 0, 0 );
3077 p5 = QPointF( width + dx, height - dy );
3078 p6 = QPointF( dx, -dy );
3079 p3 = QPointF( width - dx, height + dy );
3080 p4 = QPointF( -dx, dy );
3081 }
3082
3083 if ( !qgsDoubleNear( mOffset, 0.0 ) ) //shift everything
3084 {
3085 QPointF tempPt;
3086 tempPt = QgsSymbolLayerUtils::pointOnLineWithDistance( p1, p3, outputPixelDist + outputPixelOffset );
3087 p3 = QPointF( tempPt.x(), tempPt.y() );
3088 tempPt = QgsSymbolLayerUtils::pointOnLineWithDistance( p2, p4, outputPixelDist + outputPixelOffset );
3089 p4 = QPointF( tempPt.x(), tempPt.y() );
3090 tempPt = QgsSymbolLayerUtils::pointOnLineWithDistance( p1, p5, outputPixelDist - outputPixelOffset );
3091 p5 = QPointF( tempPt.x(), tempPt.y() );
3092 tempPt = QgsSymbolLayerUtils::pointOnLineWithDistance( p2, p6, outputPixelDist - outputPixelOffset );
3093 p6 = QPointF( tempPt.x(), tempPt.y() );
3094
3095 //update p1, p2 last
3096 tempPt = QgsSymbolLayerUtils::pointOnLineWithDistance( p1, p3, outputPixelOffset );
3097 p1 = QPointF( tempPt.x(), tempPt.y() );
3098 tempPt = QgsSymbolLayerUtils::pointOnLineWithDistance( p2, p4, outputPixelOffset );
3099 p2 = QPointF( tempPt.x(), tempPt.y() );
3100 }
3101
3102 QPainter p( &patternImage );
3103
3104#if 0
3105 // DEBUG: Draw rectangle
3106 p.setRenderHint( QPainter::Antialiasing, false ); // get true rect
3107 QPen pen( QColor( Qt::black ) );
3108 pen.setWidthF( 0.1 );
3109 pen.setCapStyle( Qt::FlatCap );
3110 p.setPen( pen );
3111
3112 // To see this rectangle, comment buffer cut below.
3113 // Subtract 1 because not antialiased are rendered to the right/down by 1 pixel
3114 QPolygon polygon = QPolygon() << QPoint( 0, 0 ) << QPoint( width - 1, 0 ) << QPoint( width - 1, height - 1 ) << QPoint( 0, height - 1 ) << QPoint( 0, 0 );
3115 p.drawPolygon( polygon );
3116
3117 polygon = QPolygon() << QPoint( xBuffer, yBuffer ) << QPoint( width - xBuffer - 1, yBuffer ) << QPoint( width - xBuffer - 1, height - yBuffer - 1 ) << QPoint( xBuffer, height - yBuffer - 1 ) << QPoint( xBuffer, yBuffer );
3118 p.drawPolygon( polygon );
3119#endif
3120
3121 // Use antialiasing because without antialiasing lines are rendered to the
3122 // right and below the mathematically defined points (not symmetrical)
3123 // and such tiles become useless for are filling
3124 p.setRenderHint( QPainter::Antialiasing, true );
3125
3126 // line rendering needs context for drawing on patternImage
3127 QgsRenderContext lineRenderContext;
3128 lineRenderContext.setPainter( &p );
3129 lineRenderContext.setScaleFactor( context.renderContext().scaleFactor() );
3131 lineRenderContext.setMapToPixel( mtp );
3132 lineRenderContext.setForceVectorOutput( false );
3133 lineRenderContext.setExpressionContext( context.renderContext().expressionContext() );
3135 lineRenderContext.setDisabledSymbolLayersV2( context.renderContext().disabledSymbolLayersV2() );
3136
3137 fillLineSymbol->setRenderHints( fillLineSymbol->renderHints() | Qgis::SymbolRenderHint::IsSymbolLayerSubSymbol );
3138 fillLineSymbol->startRender( lineRenderContext, context.fields() );
3139
3140 QVector<QPolygonF> polygons;
3141 polygons.append( QPolygonF() << p1 << p2 );
3142 polygons.append( QPolygonF() << p3 << p4 );
3143 if ( !qgsDoubleNear( lineAngle, 0 ) && !qgsDoubleNear( lineAngle, 360 ) && !qgsDoubleNear( lineAngle, 90 ) && !qgsDoubleNear( lineAngle, 180 ) && !qgsDoubleNear( lineAngle, 270 ) )
3144 {
3145 polygons.append( QPolygonF() << p5 << p6 );
3146 }
3147
3148 const bool useSelectedColor = shouldRenderUsingSelectionColor( context );
3149 for ( const QPolygonF &polygon : std::as_const( polygons ) )
3150 {
3151 fillLineSymbol->renderPolyline( polygon, context.feature(), lineRenderContext, -1, useSelectedColor );
3152 }
3153
3154 fillLineSymbol->stopRender( lineRenderContext );
3155 p.end();
3156
3157 // Cut off the buffer
3158 patternImage = patternImage.copy( xBuffer, yBuffer, patternImage.width() - 2 * xBuffer, patternImage.height() - 2 * yBuffer );
3159
3160 //set image to mBrush
3161 if ( !qgsDoubleNear( context.opacity(), 1.0 ) )
3162 {
3163 QImage transparentImage = patternImage.copy();
3164 QgsSymbolLayerUtils::multiplyImageOpacity( &transparentImage, context.opacity() );
3165 brush.setTextureImage( transparentImage );
3166 }
3167 else
3168 {
3169 brush.setTextureImage( patternImage );
3170 }
3171
3172 QTransform brushTransform;
3173 brush.setTransform( brushTransform );
3174
3175 return true;
3176}
3177
3179{
3180 // if we are using a vector based output, we need to render points as vectors
3181 // (OR if the line has data defined symbology, in which case we need to evaluate this line-by-line)
3182 mRenderUsingLines = context.forceVectorRendering()
3183 || ( mFillLineSymbol && mFillLineSymbol->hasDataDefinedProperties() )
3186
3187 if ( !mRenderUsingLines )
3188 {
3189 // optimised render for screen only, use image based brush
3190 // (fallback to line rendering when pattern image will result in too large a memory footprint)
3191 mRenderUsingLines = !applyPattern( context, mBrush, mLineAngle, mDistance );
3192 }
3193
3194 if ( mRenderUsingLines && mFillLineSymbol )
3195 {
3196 mFillLineSymbol->setRenderHints( mFillLineSymbol->renderHints() | Qgis::SymbolRenderHint::IsSymbolLayerSubSymbol );
3197 mFillLineSymbol->startRender( context.renderContext(), context.fields() );
3198 mFillLineSymbolRenderStarted = true;
3199 }
3200}
3201
3203{
3204 if ( mFillLineSymbolRenderStarted )
3205 {
3206 mFillLineSymbol->stopRender( context.renderContext() );
3207 mFillLineSymbolRenderStarted = false;
3208 }
3209}
3210
3211void QgsLinePatternFillSymbolLayer::renderPolygon( const QPolygonF &points, const QVector<QPolygonF> *rings, QgsSymbolRenderContext &context )
3212{
3213 const bool useSelectedColor = shouldRenderUsingSelectionColor( context );
3214 if ( !useSelectedColor && !mRenderUsingLines )
3215 {
3216 // use image based brush for speed
3217 QgsImageFillSymbolLayer::renderPolygon( points, rings, context );
3218 return;
3219 }
3220
3221 if ( !mFillLineSymbolRenderStarted && mFillLineSymbol )
3222 {
3223 mFillLineSymbol->setRenderHints( mFillLineSymbol->renderHints() | Qgis::SymbolRenderHint::IsSymbolLayerSubSymbol );
3224 mFillLineSymbol->startRender( context.renderContext(), context.fields() );
3225 mFillLineSymbolRenderStarted = true;
3226 }
3227
3228 // vector based output - so draw line by line!
3229 QPainter *p = context.renderContext().painter();
3230 if ( !p )
3231 {
3232 return;
3233 }
3234
3235 double lineAngle = mLineAngle;
3237 {
3238 context.setOriginalValueVariable( mLineAngle );
3240 }
3241
3242 double distance = mDistance;
3244 {
3245 context.setOriginalValueVariable( mDistance );
3247 }
3248 const double outputPixelDistance = context.renderContext().convertToPainterUnits( distance, mDistanceUnit, mDistanceMapUnitScale );
3249
3250 double offset = mOffset;
3251 double outputPixelOffset = mOffsetUnit == Qgis::RenderUnit::Percentage ? outputPixelDistance * offset / 100
3252 : context.renderContext().convertToPainterUnits( offset, mOffsetUnit, mOffsetMapUnitScale );
3253
3254 // fix truncated pattern with larger offsets
3255 outputPixelOffset = std::fmod( outputPixelOffset, outputPixelDistance );
3256 if ( outputPixelOffset > outputPixelDistance / 2.0 )
3257 outputPixelOffset -= outputPixelDistance;
3258
3259 p->setPen( QPen( Qt::NoPen ) );
3260
3261 // if invalid parameters, skip out
3262 if ( qgsDoubleNear( distance, 0 ) )
3263 return;
3264
3265 p->save();
3266
3267 Qgis::LineClipMode clipMode = mClipMode;
3269 {
3271 bool ok = false;
3272 const QString valueString = mDataDefinedProperties.valueAsString( QgsSymbolLayer::Property::LineClipping, context.renderContext().expressionContext(), QString(), &ok );
3273 if ( ok )
3274 {
3275 Qgis::LineClipMode decodedMode = QgsSymbolLayerUtils::decodeLineClipMode( valueString, &ok );
3276 if ( ok )
3277 clipMode = decodedMode;
3278 }
3279 }
3280
3281 std::unique_ptr< QgsPolygon > shapePolygon;
3282 std::unique_ptr< QgsGeometryEngine > shapeEngine;
3283 switch ( clipMode )
3284 {
3286 break;
3287
3289 {
3290 shapePolygon = std::make_unique< QgsPolygon >();
3291 shapePolygon->setExteriorRing( QgsLineString::fromQPolygonF( points ) );
3292 if ( rings )
3293 {
3294 for ( const QPolygonF &ring : *rings )
3295 {
3296 shapePolygon->addInteriorRing( QgsLineString::fromQPolygonF( ring ) );
3297 }
3298 }
3299 shapeEngine.reset( QgsGeometry::createGeometryEngine( shapePolygon.get() ) );
3300 shapeEngine->prepareGeometry();
3301 break;
3302 }
3303
3305 {
3306 QPainterPath path;
3307 path.addPolygon( points );
3308 if ( rings )
3309 {
3310 for ( const QPolygonF &ring : *rings )
3311 {
3312 path.addPolygon( ring );
3313 }
3314 }
3315 p->setClipPath( path, Qt::IntersectClip );
3316 break;
3317 }
3318 }
3319
3320 const bool applyBrushTransform = applyBrushTransformFromContext( &context );
3321 const QRectF boundingRect = points.boundingRect();
3322
3323 QTransform invertedRotateTransform;
3324 double left;
3325 double top;
3326 double right;
3327 double bottom;
3328
3329 QTransform transform;
3330 if ( applyBrushTransform )
3331 {
3332 // rotation applies around center of feature
3333 transform.translate( -boundingRect.center().x(),
3334 -boundingRect.center().y() );
3335 transform.rotate( lineAngle );
3336 transform.translate( boundingRect.center().x(),
3337 boundingRect.center().y() );
3338 }
3339 else
3340 {
3341 // rotation applies around top of viewport
3342 transform.rotate( lineAngle );
3343 }
3344
3345 const QRectF transformedBounds = transform.map( points ).boundingRect();
3346
3347 // bounds are expanded out a bit to account for maximum line width
3348 const double buffer = QgsSymbolLayerUtils::estimateMaxSymbolBleed( mFillLineSymbol.get(), context.renderContext() );
3349 left = transformedBounds.left() - buffer * 2;
3350 top = transformedBounds.top() - buffer * 2;
3351 right = transformedBounds.right() + buffer * 2;
3352 bottom = transformedBounds.bottom() + buffer * 2;
3353 invertedRotateTransform = transform.inverted();
3354
3355 if ( !applyBrushTransform )
3356 {
3357 top -= transformedBounds.top() - ( outputPixelDistance * std::floor( transformedBounds.top() / outputPixelDistance ) );
3358 }
3359
3361 QgsExpressionContextScopePopper scopePopper( context.renderContext().expressionContext(), scope );
3362 const bool needsExpressionContext = mFillLineSymbol->hasDataDefinedProperties();
3363
3364 const bool prevIsSubsymbol = context.renderContext().flags() & Qgis::RenderContextFlag::RenderingSubSymbol;
3366
3367 int currentLine = 0;
3368 for ( double currentY = top; currentY <= bottom; currentY += outputPixelDistance )
3369 {
3370 if ( context.renderContext().renderingStopped() )
3371 break;
3372
3373 if ( needsExpressionContext )
3374 scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "symbol_line_number" ), ++currentLine, true ) );
3375
3376 double x1 = left;
3377 double y1 = currentY;
3378 double x2 = left;
3379 double y2 = currentY;
3380 invertedRotateTransform.map( left, currentY - outputPixelOffset, &x1, &y1 );
3381 invertedRotateTransform.map( right, currentY - outputPixelOffset, &x2, &y2 );
3382
3383 if ( shapeEngine )
3384 {
3385 QgsLineString ls( QgsPoint( x1, y1 ), QgsPoint( x2, y2 ) );
3386 std::unique_ptr< QgsAbstractGeometry > intersection( shapeEngine->intersection( &ls ) );
3387 for ( auto it = intersection->const_parts_begin(); it != intersection->const_parts_end(); ++it )
3388 {
3389 if ( const QgsLineString *ls = qgsgeometry_cast< const QgsLineString * >( *it ) )
3390 {
3391 mFillLineSymbol->renderPolyline( ls->asQPolygonF(), context.feature(), context.renderContext(), -1, useSelectedColor );
3392 }
3393 }
3394 }
3395 else
3396 {
3397 mFillLineSymbol->renderPolyline( QPolygonF() << QPointF( x1, y1 ) << QPointF( x2, y2 ), context.feature(), context.renderContext(), -1, useSelectedColor );
3398 }
3399 }
3400
3401 p->restore();
3402
3404}
3405
3407{
3408 QVariantMap map = QgsImageFillSymbolLayer::properties();
3409 map.insert( QStringLiteral( "angle" ), QString::number( mLineAngle ) );
3410 map.insert( QStringLiteral( "distance" ), QString::number( mDistance ) );
3411 map.insert( QStringLiteral( "line_width" ), QString::number( mLineWidth ) );
3412 map.insert( QStringLiteral( "color" ), QgsColorUtils::colorToString( mColor ) );
3413 map.insert( QStringLiteral( "offset" ), QString::number( mOffset ) );
3414 map.insert( QStringLiteral( "distance_unit" ), QgsUnitTypes::encodeUnit( mDistanceUnit ) );
3415 map.insert( QStringLiteral( "line_width_unit" ), QgsUnitTypes::encodeUnit( mLineWidthUnit ) );
3416 map.insert( QStringLiteral( "offset_unit" ), QgsUnitTypes::encodeUnit( mOffsetUnit ) );
3417 map.insert( QStringLiteral( "distance_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mDistanceMapUnitScale ) );
3418 map.insert( QStringLiteral( "line_width_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mLineWidthMapUnitScale ) );
3419 map.insert( QStringLiteral( "offset_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mOffsetMapUnitScale ) );
3420 map.insert( QStringLiteral( "outline_width_unit" ), QgsUnitTypes::encodeUnit( mStrokeWidthUnit ) );
3421 map.insert( QStringLiteral( "outline_width_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mStrokeWidthMapUnitScale ) );
3422 map.insert( QStringLiteral( "clip_mode" ), QgsSymbolLayerUtils::encodeLineClipMode( mClipMode ) );
3423 return map;
3424}
3425
3427{
3429 if ( mFillLineSymbol )
3430 {
3431 clonedLayer->setSubSymbol( mFillLineSymbol->clone() );
3432 }
3433 copyPaintEffect( clonedLayer );
3434 copyDataDefinedProperties( clonedLayer );
3435 return clonedLayer;
3436}
3437
3438void QgsLinePatternFillSymbolLayer::toSld( QDomDocument &doc, QDomElement &element, const QVariantMap &props ) const
3439{
3440 QDomElement symbolizerElem = doc.createElement( QStringLiteral( "se:PolygonSymbolizer" ) );
3441 if ( !props.value( QStringLiteral( "uom" ), QString() ).toString().isEmpty() )
3442 symbolizerElem.setAttribute( QStringLiteral( "uom" ), props.value( QStringLiteral( "uom" ), QString() ).toString() );
3443 element.appendChild( symbolizerElem );
3444
3445 // <Geometry>
3446 QgsSymbolLayerUtils::createGeometryElement( doc, symbolizerElem, props.value( QStringLiteral( "geom" ), QString() ).toString() );
3447
3448 QDomElement fillElem = doc.createElement( QStringLiteral( "se:Fill" ) );
3449 symbolizerElem.appendChild( fillElem );
3450
3451 QDomElement graphicFillElem = doc.createElement( QStringLiteral( "se:GraphicFill" ) );
3452 fillElem.appendChild( graphicFillElem );
3453
3454 QDomElement graphicElem = doc.createElement( QStringLiteral( "se:Graphic" ) );
3455 graphicFillElem.appendChild( graphicElem );
3456
3457 const QgsSldExportContext context { props.value( QStringLiteral( "SldExportContext" ), QVariant::fromValue( QgsSldExportContext() ) ).value< QgsSldExportContext >() };
3458
3459 // Export to PNG (TODO: SVG)
3460 bool exportOk { false };
3461 if ( ! context.exportFilePath().isEmpty() && context.exportOptions().testFlag( Qgis::SldExportOption::Png ) )
3462 {
3463 const QImage image { toTiledPatternImage() };
3464 if ( ! image.isNull() )
3465 {
3466 const QFileInfo info { context.exportFilePath() };
3467 QString pngPath { info.completeSuffix().isEmpty() ? context.exportFilePath() : context.exportFilePath().chopped( info.completeSuffix().length() ).append( QStringLiteral( "png" ) ) };
3468 pngPath = QgsFileUtils::uniquePath( pngPath );
3469 image.save( pngPath );
3470 QgsSymbolLayerUtils::externalGraphicToSld( doc, graphicElem, QFileInfo( pngPath ).fileName(), QStringLiteral( "image/png" ), QColor(), image.height() );
3471 exportOk = true;
3472 }
3473 }
3474
3475 if ( ! exportOk )
3476 {
3477 //line properties must be inside the graphic definition
3478 QColor lineColor = mFillLineSymbol ? mFillLineSymbol->color() : QColor();
3479 double lineWidth = mFillLineSymbol ? mFillLineSymbol->width() : 0.0;
3480 lineWidth = QgsSymbolLayerUtils::rescaleUom( lineWidth, mLineWidthUnit, props );
3481 double distance = QgsSymbolLayerUtils::rescaleUom( mDistance, mDistanceUnit, props );
3482 QgsSymbolLayerUtils::wellKnownMarkerToSld( doc, graphicElem, QStringLiteral( "horline" ), QColor(), lineColor, Qt::SolidLine, lineWidth, distance );
3483
3484 // <Rotation>
3485 QString angleFunc;
3486 bool ok;
3487 double angle = props.value( QStringLiteral( "angle" ), QStringLiteral( "0" ) ).toDouble( &ok );
3488 if ( !ok )
3489 {
3490 angleFunc = QStringLiteral( "%1 + %2" ).arg( props.value( QStringLiteral( "angle" ), QStringLiteral( "0" ) ).toString() ).arg( mLineAngle );
3491 }
3492 else if ( !qgsDoubleNear( angle + mLineAngle, 0.0 ) )
3493 {
3494 angleFunc = QString::number( angle + mLineAngle );
3495 }
3496 QgsSymbolLayerUtils::createRotationElement( doc, graphicElem, angleFunc );
3497
3498 // <se:Displacement>
3499 QPointF lineOffset( std::sin( mLineAngle ) * mOffset, std::cos( mLineAngle ) * mOffset );
3500 lineOffset = QgsSymbolLayerUtils::rescaleUom( lineOffset, mOffsetUnit, props );
3501 QgsSymbolLayerUtils::createDisplacementElement( doc, graphicElem, lineOffset );
3502 }
3503}
3504
3505QString QgsLinePatternFillSymbolLayer::ogrFeatureStyleWidth( double widthScaleFactor ) const
3506{
3507 QString featureStyle;
3508 featureStyle.append( "Brush(" );
3509 featureStyle.append( QStringLiteral( "fc:%1" ).arg( mColor.name() ) );
3510 featureStyle.append( QStringLiteral( ",bc:%1" ).arg( QLatin1String( "#00000000" ) ) ); //transparent background
3511 featureStyle.append( ",id:\"ogr-brush-2\"" );
3512 featureStyle.append( QStringLiteral( ",a:%1" ).arg( mLineAngle ) );
3513 featureStyle.append( QStringLiteral( ",s:%1" ).arg( mLineWidth * widthScaleFactor ) );
3514 featureStyle.append( ",dx:0mm" );
3515 featureStyle.append( QStringLiteral( ",dy:%1mm" ).arg( mDistance * widthScaleFactor ) );
3516 featureStyle.append( ')' );
3517 return featureStyle;
3518}
3519
3521{
3523 && ( !mFillLineSymbol || !mFillLineSymbol->hasDataDefinedProperties() ) )
3524 {
3525 return; //no data defined settings
3526 }
3527
3528 double lineAngle = mLineAngle;
3530 {
3531 context.setOriginalValueVariable( mLineAngle );
3533 }
3534 double distance = mDistance;
3536 {
3537 context.setOriginalValueVariable( mDistance );
3539 }
3540 applyPattern( context, mBrush, lineAngle, distance );
3541}
3542
3544{
3545 QString name;
3546 QColor fillColor, lineColor;
3547 double size, lineWidth;
3548 Qt::PenStyle lineStyle;
3549
3550 QDomElement fillElem = element.firstChildElement( QStringLiteral( "Fill" ) );
3551 if ( fillElem.isNull() )
3552 return nullptr;
3553
3554 QDomElement graphicFillElem = fillElem.firstChildElement( QStringLiteral( "GraphicFill" ) );
3555 if ( graphicFillElem.isNull() )
3556 return nullptr;
3557
3558 QDomElement graphicElem = graphicFillElem.firstChildElement( QStringLiteral( "Graphic" ) );
3559 if ( graphicElem.isNull() )
3560 return nullptr;
3561
3562 if ( !QgsSymbolLayerUtils::wellKnownMarkerFromSld( graphicElem, name, fillColor, lineColor, lineStyle, lineWidth, size ) )
3563 return nullptr;
3564
3565 if ( name != QLatin1String( "horline" ) )
3566 return nullptr;
3567
3568 double angle = 0.0;
3569 QString angleFunc;
3570 if ( QgsSymbolLayerUtils::rotationFromSldElement( graphicElem, angleFunc ) )
3571 {
3572 bool ok;
3573 double d = angleFunc.toDouble( &ok );
3574 if ( ok )
3575 angle = d;
3576 }
3577
3578 double offset = 0.0;
3579 QPointF vectOffset;
3580 if ( QgsSymbolLayerUtils::displacementFromSldElement( graphicElem, vectOffset ) )
3581 {
3582 offset = std::sqrt( std::pow( vectOffset.x(), 2 ) + std::pow( vectOffset.y(), 2 ) );
3583 }
3584
3585 double scaleFactor = 1.0;
3586 const QString uom = element.attribute( QStringLiteral( "uom" ) );
3587 Qgis::RenderUnit sldUnitSize = QgsSymbolLayerUtils::decodeSldUom( uom, &scaleFactor );
3588 size = size * scaleFactor;
3589 lineWidth = lineWidth * scaleFactor;
3590
3591 std::unique_ptr< QgsLinePatternFillSymbolLayer > sl = std::make_unique< QgsLinePatternFillSymbolLayer >();
3592 sl->setOutputUnit( sldUnitSize );
3593 sl->setColor( lineColor );
3594 sl->setLineWidth( lineWidth );
3595 sl->setLineAngle( angle );
3596 sl->setOffset( offset );
3597 sl->setDistance( size );
3598
3599 // try to get the stroke
3600 QDomElement strokeElem = element.firstChildElement( QStringLiteral( "Stroke" ) );
3601 if ( !strokeElem.isNull() )
3602 {
3604 if ( l )
3605 {
3606 QgsSymbolLayerList layers;
3607 layers.append( l );
3608 sl->setSubSymbol( new QgsLineSymbol( layers ) );
3609 }
3610 }
3611
3612 return sl.release();
3613}
3614
3615
3617
3620{
3621 mMarkerSymbol = std::make_unique<QgsMarkerSymbol>();
3622 QgsImageFillSymbolLayer::setSubSymbol( nullptr ); //no stroke
3623}
3624
3626
3628{
3630 mDistanceXUnit = unit;
3631 mDistanceYUnit = unit;
3632 // don't change "percentage" units -- since they adapt directly to whatever other unit is set
3634 mDisplacementXUnit = unit;
3636 mDisplacementYUnit = unit;
3638 mOffsetXUnit = unit;
3640 mOffsetYUnit = unit;
3642 mRandomDeviationXUnit = unit;
3644 mRandomDeviationYUnit = unit;
3645
3646 if ( mMarkerSymbol )
3647 {
3648 mMarkerSymbol->setOutputUnit( unit );
3649 }
3650}
3651
3668
3680
3693
3709
3711{
3712 std::unique_ptr< QgsPointPatternFillSymbolLayer > layer = std::make_unique< QgsPointPatternFillSymbolLayer >();
3713 if ( properties.contains( QStringLiteral( "distance_x" ) ) )
3714 {
3715 layer->setDistanceX( properties[QStringLiteral( "distance_x" )].toDouble() );
3716 }
3717 if ( properties.contains( QStringLiteral( "distance_y" ) ) )
3718 {
3719 layer->setDistanceY( properties[QStringLiteral( "distance_y" )].toDouble() );
3720 }
3721 if ( properties.contains( QStringLiteral( "displacement_x" ) ) )
3722 {
3723 layer->setDisplacementX( properties[QStringLiteral( "displacement_x" )].toDouble() );
3724 }
3725 if ( properties.contains( QStringLiteral( "displacement_y" ) ) )
3726 {
3727 layer->setDisplacementY( properties[QStringLiteral( "displacement_y" )].toDouble() );
3728 }
3729 if ( properties.contains( QStringLiteral( "offset_x" ) ) )
3730 {
3731 layer->setOffsetX( properties[QStringLiteral( "offset_x" )].toDouble() );
3732 }
3733 if ( properties.contains( QStringLiteral( "offset_y" ) ) )
3734 {
3735 layer->setOffsetY( properties[QStringLiteral( "offset_y" )].toDouble() );
3736 }
3737
3738 if ( properties.contains( QStringLiteral( "distance_x_unit" ) ) )
3739 {
3740 layer->setDistanceXUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "distance_x_unit" )].toString() ) );
3741 }
3742 if ( properties.contains( QStringLiteral( "distance_x_map_unit_scale" ) ) )
3743 {
3744 layer->setDistanceXMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "distance_x_map_unit_scale" )].toString() ) );
3745 }
3746 if ( properties.contains( QStringLiteral( "distance_y_unit" ) ) )
3747 {
3748 layer->setDistanceYUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "distance_y_unit" )].toString() ) );
3749 }
3750 if ( properties.contains( QStringLiteral( "distance_y_map_unit_scale" ) ) )
3751 {
3752 layer->setDistanceYMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "distance_y_map_unit_scale" )].toString() ) );
3753 }
3754 if ( properties.contains( QStringLiteral( "displacement_x_unit" ) ) )
3755 {
3756 layer->setDisplacementXUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "displacement_x_unit" )].toString() ) );
3757 }
3758 if ( properties.contains( QStringLiteral( "displacement_x_map_unit_scale" ) ) )
3759 {
3760 layer->setDisplacementXMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "displacement_x_map_unit_scale" )].toString() ) );
3761 }
3762 if ( properties.contains( QStringLiteral( "displacement_y_unit" ) ) )
3763 {
3764 layer->setDisplacementYUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "displacement_y_unit" )].toString() ) );
3765 }
3766 if ( properties.contains( QStringLiteral( "displacement_y_map_unit_scale" ) ) )
3767 {
3768 layer->setDisplacementYMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "displacement_y_map_unit_scale" )].toString() ) );
3769 }
3770 if ( properties.contains( QStringLiteral( "offset_x_unit" ) ) )
3771 {
3772 layer->setOffsetXUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "offset_x_unit" )].toString() ) );
3773 }
3774 if ( properties.contains( QStringLiteral( "offset_x_map_unit_scale" ) ) )
3775 {
3776 layer->setOffsetXMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "offset_x_map_unit_scale" )].toString() ) );
3777 }
3778 if ( properties.contains( QStringLiteral( "offset_y_unit" ) ) )
3779 {
3780 layer->setOffsetYUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "offset_y_unit" )].toString() ) );
3781 }
3782 if ( properties.contains( QStringLiteral( "offset_y_map_unit_scale" ) ) )
3783 {
3784 layer->setOffsetYMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "offset_y_map_unit_scale" )].toString() ) );
3785 }
3786
3787 if ( properties.contains( QStringLiteral( "random_deviation_x" ) ) )
3788 {
3789 layer->setMaximumRandomDeviationX( properties[QStringLiteral( "random_deviation_x" )].toDouble() );
3790 }
3791 if ( properties.contains( QStringLiteral( "random_deviation_y" ) ) )
3792 {
3793 layer->setMaximumRandomDeviationY( properties[QStringLiteral( "random_deviation_y" )].toDouble() );
3794 }
3795 if ( properties.contains( QStringLiteral( "random_deviation_x_unit" ) ) )
3796 {
3797 layer->setRandomDeviationXUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "random_deviation_x_unit" )].toString() ) );
3798 }
3799 if ( properties.contains( QStringLiteral( "random_deviation_x_map_unit_scale" ) ) )
3800 {
3801 layer->setRandomDeviationXMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "random_deviation_x_map_unit_scale" )].toString() ) );
3802 }
3803 if ( properties.contains( QStringLiteral( "random_deviation_y_unit" ) ) )
3804 {
3805 layer->setRandomDeviationYUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "random_deviation_y_unit" )].toString() ) );
3806 }
3807 if ( properties.contains( QStringLiteral( "random_deviation_y_map_unit_scale" ) ) )
3808 {
3809 layer->setRandomDeviationYMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "random_deviation_y_map_unit_scale" )].toString() ) );
3810 }
3811 unsigned long seed = 0;
3812 if ( properties.contains( QStringLiteral( "seed" ) ) )
3813 seed = properties.value( QStringLiteral( "seed" ) ).toUInt();
3814 else
3815 {
3816 // if we a creating a new point pattern fill from scratch, we default to a random seed
3817 // because seed based fills are just nicer for users vs seeing points jump around with every map refresh
3818 std::random_device rd;
3819 std::mt19937 mt( seed == 0 ? rd() : seed );
3820 std::uniform_int_distribution<> uniformDist( 1, 999999999 );
3821 seed = uniformDist( mt );
3822 }
3823 layer->setSeed( seed );
3824
3825 if ( properties.contains( QStringLiteral( "outline_width_unit" ) ) )
3826 {
3827 layer->setStrokeWidthUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "outline_width_unit" )].toString() ) );
3828 }
3829 if ( properties.contains( QStringLiteral( "outline_width_map_unit_scale" ) ) )
3830 {
3831 layer->setStrokeWidthMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "outline_width_map_unit_scale" )].toString() ) );
3832 }
3833 if ( properties.contains( QStringLiteral( "clip_mode" ) ) )
3834 {
3835 layer->setClipMode( QgsSymbolLayerUtils::decodeMarkerClipMode( properties.value( QStringLiteral( "clip_mode" ) ).toString() ) );
3836 }
3837 if ( properties.contains( QStringLiteral( "coordinate_reference" ) ) )
3838 {
3839 layer->setCoordinateReference( QgsSymbolLayerUtils::decodeCoordinateReference( properties[QStringLiteral( "coordinate_reference" )].toString() ) );
3840 }
3841
3842 if ( properties.contains( QStringLiteral( "angle" ) ) )
3843 {
3844 layer->setAngle( properties[QStringLiteral( "angle" )].toDouble() );
3845 }
3846
3847 layer->restoreOldDataDefinedProperties( properties );
3848
3849 return layer.release();
3850}
3851
3853{
3854 return QStringLiteral( "PointPatternFill" );
3855}
3856
3857bool QgsPointPatternFillSymbolLayer::applyPattern( const QgsSymbolRenderContext &context, QBrush &brush, double distanceX, double distanceY,
3858 double displacementX, double displacementY, double offsetX, double offsetY )
3859{
3860 //render 3 rows and columns in one go to easily incorporate displacement
3861 const QgsRenderContext &ctx = context.renderContext();
3864
3865 double widthOffset = std::fmod(
3866 mOffsetXUnit == Qgis::RenderUnit::Percentage ? ( width * offsetX / 200 ) : ctx.convertToPainterUnits( offsetX, mOffsetXUnit, mOffsetXMapUnitScale ),
3867 width );
3868 double heightOffset = std::fmod(
3869 mOffsetYUnit == Qgis::RenderUnit::Percentage ? ( height * offsetY / 200 ) : ctx.convertToPainterUnits( offsetY, mOffsetYUnit, mOffsetYMapUnitScale ),
3870 height );
3871
3872 if ( width > 2000 || height > 2000 ) //protect symbol layer from eating too much memory
3873 {
3874 brush.setTextureImage( QImage() );
3875 return false;
3876 }
3877
3878 QImage patternImage( width, height, QImage::Format_ARGB32 );
3879 patternImage.fill( 0 );
3880 if ( patternImage.isNull() )
3881 {
3882 brush.setTextureImage( QImage() );
3883 return false;
3884 }
3885 if ( mMarkerSymbol )
3886 {
3887 QPainter p( &patternImage );
3888
3889 //marker rendering needs context for drawing on patternImage
3890 QgsRenderContext pointRenderContext;
3891 pointRenderContext.setRendererScale( context.renderContext().rendererScale() );
3892 pointRenderContext.setPainter( &p );
3893 pointRenderContext.setScaleFactor( context.renderContext().scaleFactor() );
3894
3897 pointRenderContext.setMapToPixel( mtp );
3898 pointRenderContext.setForceVectorOutput( false );
3899 pointRenderContext.setExpressionContext( context.renderContext().expressionContext() );
3901
3903 mMarkerSymbol->startRender( pointRenderContext, context.fields() );
3904
3905 //render points on distance grid
3906 for ( double currentX = -width; currentX <= width * 2.0; currentX += width )
3907 {
3908 for ( double currentY = -height; currentY <= height * 2.0; currentY += height )
3909 {
3910 mMarkerSymbol->renderPoint( QPointF( currentX + widthOffset, currentY + heightOffset ), context.feature(), pointRenderContext );
3911 }
3912 }
3913
3914 //render displaced points
3915 double displacementPixelX = mDisplacementXUnit == Qgis::RenderUnit::Percentage
3916 ? ( width * displacementX / 200 )
3917 : ctx.convertToPainterUnits( displacementX, mDisplacementXUnit, mDisplacementXMapUnitScale );
3918 double displacementPixelY = mDisplacementYUnit == Qgis::RenderUnit::Percentage
3919 ? ( height * displacementY / 200 )
3920 : ctx.convertToPainterUnits( displacementY, mDisplacementYUnit, mDisplacementYMapUnitScale );
3921 for ( double currentX = -width; currentX <= width * 2.0; currentX += width )
3922 {
3923 for ( double currentY = -height / 2.0; currentY <= height * 2.0; currentY += height )
3924 {
3925 mMarkerSymbol->renderPoint( QPointF( currentX + widthOffset + displacementPixelX, currentY + heightOffset ), context.feature(), pointRenderContext );
3926 }
3927 }
3928
3929 for ( double currentX = -width / 2.0; currentX <= width * 2.0; currentX += width )
3930 {
3931 for ( double currentY = -height; currentY <= height * 2.0; currentY += height / 2.0 )
3932 {
3933 mMarkerSymbol->renderPoint( QPointF( currentX + widthOffset + ( std::fmod( currentY, height ) != 0 ? displacementPixelX : 0 ), currentY + heightOffset - displacementPixelY ), context.feature(), pointRenderContext );
3934 }
3935 }
3936
3937 mMarkerSymbol->stopRender( pointRenderContext );
3938 }
3939
3940 if ( !qgsDoubleNear( context.opacity(), 1.0 ) )
3941 {
3942 QImage transparentImage = patternImage.copy();
3943 QgsSymbolLayerUtils::multiplyImageOpacity( &transparentImage, context.opacity() );
3944 brush.setTextureImage( transparentImage );
3945 }
3946 else
3947 {
3948 brush.setTextureImage( patternImage );
3949 }
3950 QTransform brushTransform;
3951 brush.setTransform( brushTransform );
3952
3953 return true;
3954}
3955
3957{
3958 // if we are using a vector based output, we need to render points as vectors
3959 // (OR if the marker has data defined symbology, in which case we need to evaluate this point-by-point)
3960 mRenderUsingMarkers = context.forceVectorRendering()
3961 || ( mMarkerSymbol && mMarkerSymbol->hasDataDefinedProperties() )
3965 || mClipMode != Qgis::MarkerClipMode::Shape
3968 || !qgsDoubleNear( mAngle, 0 )
3970
3971 if ( !mRenderUsingMarkers )
3972 {
3973 // optimised render for screen only, use image based brush
3974 // (fallback to line rendering when pattern image will result in too large a memory footprint)
3975 mRenderUsingMarkers = !applyPattern( context, mBrush, mDistanceX, mDistanceY, mDisplacementX, mDisplacementY, mOffsetX, mOffsetY );
3976 }
3977
3978 if ( mRenderUsingMarkers && mMarkerSymbol )
3979 {
3981 mMarkerSymbol->startRender( context.renderContext(), context.fields() );
3983 }
3984}
3985
3987{
3989 {
3990 mMarkerSymbol->stopRender( context.renderContext() );
3992 }
3993}
3994
3996{
3997 installMasks( context, true );
3998
3999 // The base class version passes this on to the subsymbol, but we deliberately don't do that here.
4000 // Otherwise generators used in the subsymbol will only render a single point per feature (they
4001 // have logic to only render once per paired call to startFeatureRender/stopFeatureRender).
4002}
4003
4005{
4006 removeMasks( context, true );
4007
4008 // The base class version passes this on to the subsymbol, but we deliberately don't do that here.
4009 // Otherwise generators used in the subsymbol will only render a single point per feature (they
4010 // have logic to only render once per paired call to startFeatureRender/stopFeatureRender).
4011}
4012
4013void QgsPointPatternFillSymbolLayer::renderPolygon( const QPolygonF &points, const QVector<QPolygonF> *rings, QgsSymbolRenderContext &context )
4014{
4015 const bool useSelectedColor = shouldRenderUsingSelectionColor( context );
4016 if ( !useSelectedColor && !mRenderUsingMarkers )
4017 {
4018 // use image based brush for speed
4019 QgsImageFillSymbolLayer::renderPolygon( points, rings, context );
4020 return;
4021 }
4022
4024 {
4026 mMarkerSymbol->startRender( context.renderContext(), context.fields() );
4028 }
4029
4030 // vector based output - so draw dot by dot!
4031 QPainter *p = context.renderContext().painter();
4032 if ( !p )
4033 {
4034 return;
4035 }
4036
4037 double angle = mAngle;
4039 {
4042 }
4043
4044 double distanceX = mDistanceX;
4046 {
4049 }
4051
4052 double distanceY = mDistanceY;
4054 {
4057 }
4059
4060 double offsetX = mOffsetX;
4062 {
4065 }
4066 const double widthOffset = std::fmod(
4068 ? ( offsetX * width / 100 )
4070 width );
4071
4072 double offsetY = mOffsetY;
4074 {
4077 }
4078 const double heightOffset = std::fmod(
4080 ? ( offsetY * height / 100 )
4082 height );
4083
4086 {
4089 }
4090 const double displacementPixelX = mDisplacementXUnit == Qgis::RenderUnit::Percentage
4091 ? ( displacementX * width / 100 )
4093
4096 {
4099 }
4100 const double displacementPixelY = mDisplacementYUnit == Qgis::RenderUnit::Percentage
4101 ? ( displacementY * height / 100 )
4103
4104 p->setPen( QPen( Qt::NoPen ) );
4105
4106 // if invalid parameters, skip out
4107 if ( qgsDoubleNear( width, 0 ) || qgsDoubleNear( height, 0 ) || width < 0 || height < 0 )
4108 return;
4109
4110 p->save();
4111
4112 Qgis::MarkerClipMode clipMode = mClipMode;
4114 {
4116 bool ok = false;
4117 const QString valueString = mDataDefinedProperties.valueAsString( QgsSymbolLayer::Property::MarkerClipping, context.renderContext().expressionContext(), QString(), &ok );
4118 if ( ok )
4119 {
4120 Qgis::MarkerClipMode decodedMode = QgsSymbolLayerUtils::decodeMarkerClipMode( valueString, &ok );
4121 if ( ok )
4122 clipMode = decodedMode;
4123 }
4124 }
4125
4126 std::unique_ptr< QgsPolygon > shapePolygon;
4127 std::unique_ptr< QgsGeometryEngine > shapeEngine;
4128 switch ( clipMode )
4129 {
4133 {
4134 shapePolygon = std::make_unique< QgsPolygon >();
4135 shapePolygon->setExteriorRing( QgsLineString::fromQPolygonF( points ) );
4136 if ( rings )
4137 {
4138 for ( const QPolygonF &ring : *rings )
4139 {
4140 shapePolygon->addInteriorRing( QgsLineString::fromQPolygonF( ring ) );
4141 }
4142 }
4143 shapeEngine.reset( QgsGeometry::createGeometryEngine( shapePolygon.get() ) );
4144 shapeEngine->prepareGeometry();
4145 break;
4146 }
4147
4149 {
4150 QPainterPath path;
4151 path.addPolygon( points );
4152 if ( rings )
4153 {
4154 for ( const QPolygonF &ring : *rings )
4155 {
4156 path.addPolygon( ring );
4157 }
4158 }
4159 p->setClipPath( path, Qt::IntersectClip );
4160 break;
4161 }
4162 }
4163
4164 const bool applyBrushTransform = applyBrushTransformFromContext( &context );
4165 const QRectF boundingRect = points.boundingRect();
4166
4167 QTransform invertedRotateTransform;
4168 double left;
4169 double top;
4170 double right;
4171 double bottom;
4172
4173 if ( !qgsDoubleNear( angle, 0 ) )
4174 {
4175 QTransform transform;
4176 if ( applyBrushTransform )
4177 {
4178 // rotation applies around center of feature
4179 transform.translate( -boundingRect.center().x(),
4180 -boundingRect.center().y() );
4181 transform.rotate( -angle );
4182 transform.translate( boundingRect.center().x(),
4183 boundingRect.center().y() );
4184 }
4185 else
4186 {
4187 // rotation applies around top of viewport
4188 transform.rotate( -angle );
4189 }
4190
4191 const QRectF transformedBounds = transform.map( points ).boundingRect();
4192 left = transformedBounds.left() - 2 * width;
4193 top = transformedBounds.top() - 2 * height;
4194 right = transformedBounds.right() + 2 * width;
4195 bottom = transformedBounds.bottom() + 2 * height;
4196 invertedRotateTransform = transform.inverted();
4197
4198 if ( !applyBrushTransform )
4199 {
4200 left -= transformedBounds.left() - ( width * std::floor( transformedBounds.left() / width ) );
4201 top -= transformedBounds.top() - ( height * std::floor( transformedBounds.top() / height ) );
4202 }
4203 }
4204 else
4205 {
4206 left = boundingRect.left() - 2 * width;
4207 top = boundingRect.top() - 2 * height;
4208 right = boundingRect.right() + 2 * width;
4209 bottom = boundingRect.bottom() + 2 * height;
4210
4211 if ( !applyBrushTransform )
4212 {
4213 left -= boundingRect.left() - ( width * std::floor( boundingRect.left() / width ) );
4214 top -= boundingRect.top() - ( height * std::floor( boundingRect.top() / height ) );
4215 }
4216 }
4217
4218 unsigned long seed = mSeed;
4220 {
4221 context.renderContext().expressionContext().setOriginalValueVariable( static_cast< unsigned long long >( seed ) );
4223 }
4224
4225 double maxRandomDeviationX = mRandomDeviationX;
4227 {
4228 context.setOriginalValueVariable( maxRandomDeviationX );
4229 maxRandomDeviationX = mDataDefinedProperties.valueAsDouble( QgsSymbolLayer::Property::RandomOffsetX, context.renderContext().expressionContext(), maxRandomDeviationX );
4230 }
4231 const double maxRandomDeviationPixelX = mRandomDeviationXUnit == Qgis::RenderUnit::Percentage ? ( maxRandomDeviationX * width / 100 )
4233
4234 double maxRandomDeviationY = mRandomDeviationY;
4236 {
4237 context.setOriginalValueVariable( maxRandomDeviationY );
4238 maxRandomDeviationY = mDataDefinedProperties.valueAsDouble( QgsSymbolLayer::Property::RandomOffsetY, context.renderContext().expressionContext(), maxRandomDeviationY );
4239 }
4240 const double maxRandomDeviationPixelY = mRandomDeviationYUnit == Qgis::RenderUnit::Percentage ? ( maxRandomDeviationY * height / 100 )
4242
4243 std::random_device rd;
4244 std::mt19937 mt( seed == 0 ? rd() : seed );
4245 std::uniform_real_distribution<> uniformDist( 0, 1 );
4246 const bool useRandomShift = !qgsDoubleNear( maxRandomDeviationPixelX, 0 ) || !qgsDoubleNear( maxRandomDeviationPixelY, 0 );
4247
4249 QgsExpressionContextScopePopper scopePopper( context.renderContext().expressionContext(), scope );
4250 int pointNum = 0;
4251 const bool needsExpressionContext = mMarkerSymbol->hasDataDefinedProperties();
4252
4253 const bool prevIsSubsymbol = context.renderContext().flags() & Qgis::RenderContextFlag::RenderingSubSymbol;
4255
4256 const double prevOpacity = mMarkerSymbol->opacity();
4257 mMarkerSymbol->setOpacity( mMarkerSymbol->opacity() * context.opacity() );
4258
4259 bool alternateColumn = false;
4260 int currentCol = -3; // because we actually render a few rows/cols outside the bounds, try to align the col/row numbers to start at 1 for the first visible row/col
4261 for ( double currentX = left; currentX <= right; currentX += width, alternateColumn = !alternateColumn )
4262 {
4263 if ( context.renderContext().renderingStopped() )
4264 break;
4265
4266 if ( needsExpressionContext )
4267 scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "symbol_marker_column" ), ++currentCol, true ) );
4268
4269 bool alternateRow = false;
4270 const double columnX = currentX + widthOffset;
4271 int currentRow = -3;
4272 for ( double currentY = top; currentY <= bottom; currentY += height, alternateRow = !alternateRow )
4273 {
4274 if ( context.renderContext().renderingStopped() )
4275 break;
4276
4277 double y = currentY + heightOffset;
4278 double x = columnX;
4279 if ( alternateRow )
4280 x += displacementPixelX;
4281
4282 if ( !alternateColumn )
4283 y -= displacementPixelY;
4284
4285 if ( !qgsDoubleNear( angle, 0 ) )
4286 {
4287 double xx = x;
4288 double yy = y;
4289 invertedRotateTransform.map( xx, yy, &x, &y );
4290 }
4291
4292 if ( useRandomShift )
4293 {
4294 x += ( 2 * uniformDist( mt ) - 1 ) * maxRandomDeviationPixelX;
4295 y += ( 2 * uniformDist( mt ) - 1 ) * maxRandomDeviationPixelY;
4296 }
4297
4298 if ( needsExpressionContext )
4299 {
4301 scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "symbol_marker_row" ), ++currentRow, true ) );
4302 }
4303
4304 if ( shapeEngine )
4305 {
4306 bool renderPoint = true;
4307 switch ( clipMode )
4308 {
4310 {
4311 // we test using the marker bounds here and NOT just the x,y point, as the marker symbol may have offsets or other data defined properties which affect its visual placement
4312 const QgsRectangle markerRect = QgsRectangle( mMarkerSymbol->bounds( QPointF( x, y ), context.renderContext(), context.feature() ? *context.feature() : QgsFeature() ) );
4313 QgsPoint p( markerRect.center() );
4314 renderPoint = shapeEngine->intersects( &p );
4315 break;
4316 }
4317
4320 {
4321 const QgsGeometry markerBounds = QgsGeometry::fromRect( QgsRectangle( mMarkerSymbol->bounds( QPointF( x, y ), context.renderContext(), context.feature() ? *context.feature() : QgsFeature() ) ) );
4322
4324 renderPoint = shapeEngine->contains( markerBounds.constGet() );
4325 else
4326 renderPoint = shapeEngine->intersects( markerBounds.constGet() );
4327 break;
4328 }
4329
4331 break;
4332 }
4333
4334 if ( !renderPoint )
4335 continue;
4336 }
4337
4338 mMarkerSymbol->renderPoint( QPointF( x, y ), context.feature(), context.renderContext(), -1, useSelectedColor );
4339 }
4340 }
4341
4342 mMarkerSymbol->setOpacity( prevOpacity );
4343
4344 p->restore();
4345
4347}
4348
4350{
4351 QVariantMap map = QgsImageFillSymbolLayer::properties();
4352 map.insert( QStringLiteral( "distance_x" ), QString::number( mDistanceX ) );
4353 map.insert( QStringLiteral( "distance_y" ), QString::number( mDistanceY ) );
4354 map.insert( QStringLiteral( "displacement_x" ), QString::number( mDisplacementX ) );
4355 map.insert( QStringLiteral( "displacement_y" ), QString::number( mDisplacementY ) );
4356 map.insert( QStringLiteral( "offset_x" ), QString::number( mOffsetX ) );
4357 map.insert( QStringLiteral( "offset_y" ), QString::number( mOffsetY ) );
4358 map.insert( QStringLiteral( "distance_x_unit" ), QgsUnitTypes::encodeUnit( mDistanceXUnit ) );
4359 map.insert( QStringLiteral( "distance_y_unit" ), QgsUnitTypes::encodeUnit( mDistanceYUnit ) );
4360 map.insert( QStringLiteral( "displacement_x_unit" ), QgsUnitTypes::encodeUnit( mDisplacementXUnit ) );
4361 map.insert( QStringLiteral( "displacement_y_unit" ), QgsUnitTypes::encodeUnit( mDisplacementYUnit ) );
4362 map.insert( QStringLiteral( "offset_x_unit" ), QgsUnitTypes::encodeUnit( mOffsetXUnit ) );
4363 map.insert( QStringLiteral( "offset_y_unit" ), QgsUnitTypes::encodeUnit( mOffsetYUnit ) );
4364 map.insert( QStringLiteral( "distance_x_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mDistanceXMapUnitScale ) );
4365 map.insert( QStringLiteral( "distance_y_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mDistanceYMapUnitScale ) );
4366 map.insert( QStringLiteral( "displacement_x_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mDisplacementXMapUnitScale ) );
4367 map.insert( QStringLiteral( "displacement_y_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mDisplacementYMapUnitScale ) );
4368 map.insert( QStringLiteral( "offset_x_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mOffsetXMapUnitScale ) );
4369 map.insert( QStringLiteral( "offset_y_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mOffsetYMapUnitScale ) );
4370 map.insert( QStringLiteral( "outline_width_unit" ), QgsUnitTypes::encodeUnit( mStrokeWidthUnit ) );
4371 map.insert( QStringLiteral( "outline_width_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mStrokeWidthMapUnitScale ) );
4372 map.insert( QStringLiteral( "clip_mode" ), QgsSymbolLayerUtils::encodeMarkerClipMode( mClipMode ) );
4373 map.insert( QStringLiteral( "random_deviation_x" ), QString::number( mRandomDeviationX ) );
4374 map.insert( QStringLiteral( "random_deviation_y" ), QString::number( mRandomDeviationY ) );
4375 map.insert( QStringLiteral( "random_deviation_x_unit" ), QgsUnitTypes::encodeUnit( mRandomDeviationXUnit ) );
4376 map.insert( QStringLiteral( "random_deviation_y_unit" ), QgsUnitTypes::encodeUnit( mRandomDeviationYUnit ) );
4377 map.insert( QStringLiteral( "random_deviation_x_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mRandomDeviationXMapUnitScale ) );
4378 map.insert( QStringLiteral( "random_deviation_y_map_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mRandomDeviationYMapUnitScale ) );
4379 map.insert( QStringLiteral( "seed" ), QString::number( mSeed ) );
4380 map.insert( QStringLiteral( "angle" ), mAngle );
4381 return map;
4382}
4383
4385{
4387 if ( mMarkerSymbol )
4388 {
4389 clonedLayer->setSubSymbol( mMarkerSymbol->clone() );
4390 }
4391 clonedLayer->setClipMode( mClipMode );
4392 copyDataDefinedProperties( clonedLayer );
4393 copyPaintEffect( clonedLayer );
4394 return clonedLayer;
4395}
4396
4397void QgsPointPatternFillSymbolLayer::toSld( QDomDocument &doc, QDomElement &element, const QVariantMap &props ) const
4398{
4399 for ( int symbolLayerIdx = 0; symbolLayerIdx < mMarkerSymbol->symbolLayerCount(); symbolLayerIdx++ )
4400 {
4401 QDomElement symbolizerElem = doc.createElement( QStringLiteral( "se:PolygonSymbolizer" ) );
4402 if ( !props.value( QStringLiteral( "uom" ), QString() ).toString().isEmpty() )
4403 symbolizerElem.setAttribute( QStringLiteral( "uom" ), props.value( QStringLiteral( "uom" ), QString() ).toString() );
4404 element.appendChild( symbolizerElem );
4405
4406 // <Geometry>
4407 QgsSymbolLayerUtils::createGeometryElement( doc, symbolizerElem, props.value( QStringLiteral( "geom" ), QString() ).toString() );
4408
4409 QDomElement fillElem = doc.createElement( QStringLiteral( "se:Fill" ) );
4410 symbolizerElem.appendChild( fillElem );
4411
4412 QDomElement graphicFillElem = doc.createElement( QStringLiteral( "se:GraphicFill" ) );
4413 fillElem.appendChild( graphicFillElem );
4414
4415 QgsSymbolLayer *layer = mMarkerSymbol->symbolLayer( symbolLayerIdx );
4416
4417 const QgsSldExportContext context { props.value( QStringLiteral( "SldExportContext" ), QVariant::fromValue( QgsSldExportContext() ) ).value< QgsSldExportContext >() };
4418
4419 // Export to PNG (TODO: SVG)
4420 bool exportOk { false };
4421 if ( ! context.exportFilePath().isEmpty() && context.exportOptions().testFlag( Qgis::SldExportOption::Png ) )
4422 {
4423 const QImage image { toTiledPatternImage( ) };
4424 if ( ! image.isNull() )
4425 {
4426 QDomElement graphicElem = doc.createElement( QStringLiteral( "se:Graphic" ) );
4427 graphicFillElem.appendChild( graphicElem );
4428 const QFileInfo info { context.exportFilePath() };
4429 QString pngPath { info.completeSuffix().isEmpty() ? context.exportFilePath() : context.exportFilePath().chopped( info.completeSuffix().length() ).append( QStringLiteral( "png" ) ) };
4430 pngPath = QgsFileUtils::uniquePath( pngPath );
4431 image.save( pngPath );
4432 QgsSymbolLayerUtils::externalGraphicToSld( doc, graphicElem, QFileInfo( pngPath ).fileName(), QStringLiteral( "image/png" ), QColor(), image.height() );
4433 exportOk = true;
4434 }
4435 }
4436
4437 if ( ! exportOk )
4438 {
4439 // Converts to GeoServer "graphic-margin": symbol size must be subtracted from distance and then divided by 2
4440 const double markerSize { mMarkerSymbol->size() };
4441
4442 // store distanceX, distanceY, displacementX, displacementY in a <VendorOption>
4445 // From: https://docs.geoserver.org/stable/en/user/styling/sld/extensions/margins.html
4446 // top-bottom,right-left (two values, top and bottom sharing the same value)
4447 const QString marginSpec = QString( "%1 %2" ).arg( qgsDoubleToString( ( dy - markerSize ) / 2, 2 ), qgsDoubleToString( ( dx - markerSize ) / 2, 2 ) );
4448
4449 QDomElement graphicMarginElem = QgsSymbolLayerUtils::createVendorOptionElement( doc, QStringLiteral( "graphic-margin" ), marginSpec );
4450 symbolizerElem.appendChild( graphicMarginElem );
4451
4452 if ( QgsMarkerSymbolLayer *markerLayer = dynamic_cast<QgsMarkerSymbolLayer *>( layer ) )
4453 {
4454 markerLayer->writeSldMarker( doc, graphicFillElem, props );
4455 }
4456 else if ( layer )
4457 {
4458 QString errorMsg = QStringLiteral( "QgsMarkerSymbolLayer expected, %1 found. Skip it." ).arg( layer->layerType() );
4459 graphicFillElem.appendChild( doc.createComment( errorMsg ) );
4460 }
4461 else
4462 {
4463 QString errorMsg = QStringLiteral( "Missing point pattern symbol layer. Skip it." );
4464 graphicFillElem.appendChild( doc.createComment( errorMsg ) );
4465 }
4466 }
4467 }
4468}
4469
4471{
4472
4473 double angleRads { qDegreesToRadians( mAngle ) };
4474
4475 int distanceXPx { static_cast<int>( QgsSymbolLayerUtils::rescaleUom( mDistanceX, mDistanceXUnit, {} ) ) };
4476 int distanceYPx { static_cast<int>( QgsSymbolLayerUtils::rescaleUom( mDistanceY, mDistanceYUnit, {} ) ) };
4477
4478 const int displacementXPx { static_cast<int>( QgsSymbolLayerUtils::rescaleUom( mDisplacementX, mDisplacementXUnit, {} ) ) };
4479 const int displacementYPx { static_cast<int>( QgsSymbolLayerUtils::rescaleUom( mDisplacementY, mDisplacementYUnit, {} ) ) };
4480
4481 // Consider displacement, double the distance.
4482 if ( displacementXPx != 0 )
4483 {
4484 distanceXPx *= 2;
4485 }
4486
4487 if ( displacementYPx != 0 )
4488 {
4489 distanceYPx *= 2;
4490 }
4491
4492 const QSize size { QgsSymbolLayerUtils::tileSize( distanceXPx, distanceYPx, angleRads ) };
4493
4494 QPixmap pixmap( size );
4495 pixmap.fill( Qt::transparent );
4496 QPainter painter;
4497 painter.begin( &pixmap );
4498 painter.setRenderHint( QPainter::Antialiasing );
4499 QgsRenderContext renderContext = QgsRenderContext::fromQPainter( &painter );
4503 renderContext.setForceVectorOutput( true );
4504 QgsSymbolRenderContext symbolContext( renderContext, Qgis::RenderUnit::Pixels, 1.0, false, Qgis::SymbolRenderHints() );
4505
4506 std::unique_ptr< QgsPointPatternFillSymbolLayer > layerClone( clone() );
4507
4508 layerClone->setAngle( qRadiansToDegrees( angleRads ) );
4509
4510 // No way we can export a random pattern, disable it.
4511 layerClone->setMaximumRandomDeviationX( 0 );
4512 layerClone->setMaximumRandomDeviationY( 0 );
4513
4514 layerClone->drawPreviewIcon( symbolContext, pixmap.size() );
4515 painter.end();
4516 return pixmap.toImage();
4517}
4518
4520{
4521
4522 // input element is PolygonSymbolizer
4523
4524 QDomElement fillElem = element.firstChildElement( QStringLiteral( "Fill" ) );
4525 if ( fillElem.isNull() )
4526 return nullptr;
4527
4528 QDomElement graphicFillElem = fillElem.firstChildElement( QStringLiteral( "GraphicFill" ) );
4529 if ( graphicFillElem.isNull() )
4530 return nullptr;
4531
4532 QDomElement graphicElem = graphicFillElem.firstChildElement( QStringLiteral( "Graphic" ) );
4533 if ( graphicElem.isNull() )
4534 return nullptr;
4535
4536 QgsSymbolLayer *simpleMarkerSl = QgsSymbolLayerUtils::createMarkerLayerFromSld( graphicFillElem );
4537 if ( !simpleMarkerSl )
4538 return nullptr;
4539
4540
4541 QgsSymbolLayerList layers;
4542 layers.append( simpleMarkerSl );
4543
4544 std::unique_ptr< QgsMarkerSymbol > marker = std::make_unique< QgsMarkerSymbol >( layers );
4545
4546 // Converts from GeoServer "graphic-margin": symbol size must be added and margin doubled
4547 const double markerSize { marker->size() };
4548
4549 std::unique_ptr< QgsPointPatternFillSymbolLayer > pointPatternFillSl = std::make_unique< QgsPointPatternFillSymbolLayer >();
4550 pointPatternFillSl->setSubSymbol( marker.release() );
4551 // This may not be correct in all cases, TODO: check "uom"
4552 pointPatternFillSl->setDistanceXUnit( Qgis::RenderUnit::Pixels );
4553 pointPatternFillSl->setDistanceYUnit( Qgis::RenderUnit::Pixels );
4554
4555 auto distanceParser = [ & ]( const QStringList & values )
4556 {
4557 switch ( values.count( ) )
4558 {
4559 case 1: // top-right-bottom-left (single value for all four margins)
4560 {
4561 bool ok;
4562 const double v { values.at( 0 ).toDouble( &ok ) };
4563 if ( ok )
4564 {
4565 pointPatternFillSl->setDistanceX( v * 2 + markerSize );
4566 pointPatternFillSl->setDistanceY( v * 2 + markerSize );
4567 }
4568 break;
4569 }
4570 case 2: // top-bottom,right-left (two values, top and bottom sharing the same value)
4571 {
4572 bool ok;
4573 const double vX { values.at( 1 ).toDouble( &ok ) };
4574 if ( ok )
4575 {
4576 pointPatternFillSl->setDistanceX( vX * 2 + markerSize );
4577 }
4578 const double vY { values.at( 0 ).toDouble( &ok ) };
4579 if ( ok )
4580 {
4581 pointPatternFillSl->setDistanceY( vY * 2 + markerSize );
4582 }
4583 break;
4584 }
4585 case 3: // top,right-left,bottom (three values, with right and left sharing the same value)
4586 {
4587 bool ok;
4588 const double vX { values.at( 1 ).toDouble( &ok ) };
4589 if ( ok )
4590 {
4591 pointPatternFillSl->setDistanceX( vX * 2 + markerSize );
4592 }
4593 const double vYt { values.at( 0 ).toDouble( &ok ) };
4594 if ( ok )
4595 {
4596 const double vYb { values.at( 2 ).toDouble( &ok ) };
4597 if ( ok )
4598 {
4599 pointPatternFillSl->setDistanceY( ( vYt + vYb ) + markerSize );
4600 }
4601 }
4602 break;
4603 }
4604 case 4: // top,right,bottom,left (one explicit value per margin)
4605 {
4606 bool ok;
4607 const double vYt { values.at( 0 ).toDouble( &ok ) };
4608 if ( ok )
4609 {
4610 const double vYb { values.at( 2 ).toDouble( &ok ) };
4611 if ( ok )
4612 {
4613 pointPatternFillSl->setDistanceY( ( vYt + vYb ) + markerSize );
4614 }
4615 }
4616 const double vXr { values.at( 1 ).toDouble( &ok ) };
4617 if ( ok )
4618 {
4619 const double vXl { values.at( 3 ).toDouble( &ok ) };
4620 if ( ok )
4621 {
4622 pointPatternFillSl->setDistanceX( ( vXr + vXl ) + markerSize );
4623 }
4624 }
4625 break;
4626 }
4627 default:
4628 break;
4629 }
4630 };
4631
4632 // Set distance X and Y from vendor options, or from Size if no vendor options are set
4633 bool distanceFromVendorOption { false };
4634 QgsStringMap vendorOptions = QgsSymbolLayerUtils::getVendorOptionList( element );
4635 for ( QgsStringMap::iterator it = vendorOptions.begin(); it != vendorOptions.end(); ++it )
4636 {
4637 // Legacy
4638 if ( it.key() == QLatin1String( "distance" ) )
4639 {
4640 distanceParser( it.value().split( ',' ) );
4641 distanceFromVendorOption = true;
4642 }
4643 // GeoServer
4644 else if ( it.key() == QLatin1String( "graphic-margin" ) )
4645 {
4646 distanceParser( it.value().split( ' ' ) );
4647 distanceFromVendorOption = true;
4648 }
4649 }
4650
4651 // Get distances from size
4652 if ( ! distanceFromVendorOption && ! graphicFillElem.elementsByTagName( QStringLiteral( "Size" ) ).isEmpty() )
4653 {
4654 const QDomElement sizeElement { graphicFillElem.elementsByTagName( QStringLiteral( "Size" ) ).at( 0 ).toElement() };
4655 bool ok;
4656 const double size { sizeElement.text().toDouble( &ok ) };
4657 if ( ok )
4658 {
4659 pointPatternFillSl->setDistanceX( size );
4660 pointPatternFillSl->setDistanceY( size );
4661 }
4662 }
4663
4664 return pointPatternFillSl.release();
4665}
4666
4668{
4669 if ( !symbol )
4670 {
4671 return false;
4672 }
4673
4674 if ( symbol->type() == Qgis::SymbolType::Marker )
4675 {
4676 QgsMarkerSymbol *markerSymbol = static_cast<QgsMarkerSymbol *>( symbol );
4677 mMarkerSymbol.reset( markerSymbol );
4678 }
4679 return true;
4680}
4681
4686
4688{
4692 && ( !mMarkerSymbol || !mMarkerSymbol->hasDataDefinedProperties() ) )
4693 {
4694 return;
4695 }
4696
4697 double distanceX = mDistanceX;
4699 {
4702 }
4703 double distanceY = mDistanceY;
4705 {
4708 }
4711 {
4714 }
4717 {
4720 }
4721 double offsetX = mOffsetX;
4723 {
4726 }
4727 double offsetY = mOffsetY;
4729 {
4732 }
4733 applyPattern( context, mBrush, distanceX, distanceY, displacementX, displacementY, offsetX, offsetY );
4734}
4735
4737{
4738 return 0;
4739}
4740
4742{
4743 QSet<QString> attributes = QgsImageFillSymbolLayer::usedAttributes( context );
4744
4745 if ( mMarkerSymbol )
4746 attributes.unite( mMarkerSymbol->usedAttributes( context ) );
4747
4748 return attributes;
4749}
4750
4752{
4754 return true;
4755 if ( mMarkerSymbol && mMarkerSymbol->hasDataDefinedProperties() )
4756 return true;
4757 return false;
4758}
4759
4761{
4762 mColor = c;
4763 if ( mMarkerSymbol )
4764 mMarkerSymbol->setColor( c );
4765}
4766
4768{
4769 return mMarkerSymbol ? mMarkerSymbol->color() : mColor;
4770}
4771
4773
4774
4779
4781
4783{
4784 std::unique_ptr< QgsCentroidFillSymbolLayer > sl = std::make_unique< QgsCentroidFillSymbolLayer >();
4785
4786 if ( properties.contains( QStringLiteral( "point_on_surface" ) ) )
4787 sl->setPointOnSurface( properties[QStringLiteral( "point_on_surface" )].toInt() != 0 );
4788 if ( properties.contains( QStringLiteral( "point_on_all_parts" ) ) )
4789 sl->setPointOnAllParts( properties[QStringLiteral( "point_on_all_parts" )].toInt() != 0 );
4790 if ( properties.contains( QStringLiteral( "clip_points" ) ) )
4791 sl->setClipPoints( properties[QStringLiteral( "clip_points" )].toInt() != 0 );
4792 if ( properties.contains( QStringLiteral( "clip_on_current_part_only" ) ) )
4793 sl->setClipOnCurrentPartOnly( properties[QStringLiteral( "clip_on_current_part_only" )].toInt() != 0 );
4794
4795 sl->restoreOldDataDefinedProperties( properties );
4796
4797 return sl.release();
4798}
4799
4801{
4802 return QStringLiteral( "CentroidFill" );
4803}
4804
4805void QgsCentroidFillSymbolLayer::setColor( const QColor &color )
4806{
4807 mMarker->setColor( color );
4808 mColor = color;
4809}
4810
4812{
4813 return mMarker ? mMarker->color() : mColor;
4814}
4815
4817{
4818 mMarker->setRenderHints( mMarker->renderHints() | Qgis::SymbolRenderHint::IsSymbolLayerSubSymbol );
4819 mMarker->startRender( context.renderContext(), context.fields() );
4820}
4821
4823{
4824 mMarker->stopRender( context.renderContext() );
4825}
4826
4827void QgsCentroidFillSymbolLayer::renderPolygon( const QPolygonF &points, const QVector<QPolygonF> *rings, QgsSymbolRenderContext &context )
4828{
4829 Part part;
4830 part.exterior = points;
4831 if ( rings )
4832 part.rings = *rings;
4833
4834 if ( mRenderingFeature )
4835 {
4836 // in the middle of rendering a possibly multi-part feature, so we collect all the parts and defer the actual rendering
4837 // until after we've received the final part
4838 mFeatureSymbolOpacity = context.opacity();
4840 mCurrentParts << part;
4841 }
4842 else
4843 {
4844 // not rendering a feature, so we can just render the polygon immediately
4845 const double prevOpacity = mMarker->opacity();
4846 mMarker->setOpacity( mMarker->opacity() * context.opacity() );
4847 const bool useSelectedColor = shouldRenderUsingSelectionColor( context );
4848 render( context.renderContext(), QVector<Part>() << part, context.feature() ? *context.feature() : QgsFeature(), useSelectedColor );
4849 mMarker->setOpacity( prevOpacity );
4850 }
4851}
4852
4854{
4855 installMasks( context, true );
4856
4857 mRenderingFeature = true;
4858 mCurrentParts.clear();
4859}
4860
4862{
4863 mRenderingFeature = false;
4864
4865 const double prevOpacity = mMarker->opacity();
4866 mMarker->setOpacity( mMarker->opacity() * mFeatureSymbolOpacity );
4867
4868 render( context, mCurrentParts, feature, mUseSelectedColor );
4870 mUseSelectedColor = false;
4871 mMarker->setOpacity( prevOpacity );
4872
4873 removeMasks( context, true );
4874}
4875
4876void QgsCentroidFillSymbolLayer::render( QgsRenderContext &context, const QVector<QgsCentroidFillSymbolLayer::Part> &parts, const QgsFeature &feature, bool selected )
4877{
4880 bool clipPoints = mClipPoints;
4882
4883 // TODO add expressions support
4884
4885 QVector< QgsGeometry > geometryParts;
4886 geometryParts.reserve( parts.size() );
4887 QPainterPath globalPath;
4888
4889 int maxArea = 0;
4890 int maxAreaPartIdx = 0;
4891
4892 for ( int i = 0; i < parts.size(); i++ )
4893 {
4894 const Part part = parts[i];
4895 QgsGeometry geom = QgsGeometry::fromQPolygonF( part.exterior );
4896
4897 if ( !geom.isNull() && !part.rings.empty() )
4898 {
4899 QgsPolygon *poly = qgsgeometry_cast< QgsPolygon * >( geom.get() );
4900
4901 if ( !pointOnAllParts )
4902 {
4903 int area = poly->area();
4904
4905 if ( area > maxArea )
4906 {
4907 maxArea = area;
4908 maxAreaPartIdx = i;
4909 }
4910 }
4911 }
4912
4914 {
4915 globalPath.addPolygon( part.exterior );
4916 for ( const QPolygonF &ring : part.rings )
4917 {
4918 globalPath.addPolygon( ring );
4919 }
4920 }
4921 }
4922
4923 for ( int i = 0; i < parts.size(); i++ )
4924 {
4925 if ( !pointOnAllParts && i != maxAreaPartIdx )
4926 continue;
4927
4928 const Part part = parts[i];
4929
4930 if ( clipPoints )
4931 {
4932 QPainterPath path;
4933
4935 {
4936 path.addPolygon( part.exterior );
4937 for ( const QPolygonF &ring : part.rings )
4938 {
4939 path.addPolygon( ring );
4940 }
4941 }
4942 else
4943 {
4944 path = globalPath;
4945 }
4946
4947 context.painter()->save();
4948 context.painter()->setClipPath( path );
4949 }
4950
4951 QPointF centroid = pointOnSurface ? QgsSymbolLayerUtils::polygonPointOnSurface( part.exterior, &part.rings ) : QgsSymbolLayerUtils::polygonCentroid( part.exterior );
4952
4953 const bool prevIsSubsymbol = context.flags() & Qgis::RenderContextFlag::RenderingSubSymbol;
4955 mMarker->renderPoint( centroid, feature.isValid() ? &feature : nullptr, context, -1, selected );
4956 context.setFlag( Qgis::RenderContextFlag::RenderingSubSymbol, prevIsSubsymbol );
4957
4958 if ( clipPoints )
4959 {
4960 context.painter()->restore();
4961 }
4962 }
4963}
4964
4966{
4967 QVariantMap map;
4968 map[QStringLiteral( "point_on_surface" )] = QString::number( mPointOnSurface );
4969 map[QStringLiteral( "point_on_all_parts" )] = QString::number( mPointOnAllParts );
4970 map[QStringLiteral( "clip_points" )] = QString::number( mClipPoints );
4971 map[QStringLiteral( "clip_on_current_part_only" )] = QString::number( mClipOnCurrentPartOnly );
4972 return map;
4973}
4974
4976{
4977 std::unique_ptr< QgsCentroidFillSymbolLayer > x = std::make_unique< QgsCentroidFillSymbolLayer >();
4978 x->mAngle = mAngle;
4979 x->mColor = mColor;
4980 x->setSubSymbol( mMarker->clone() );
4981 x->setPointOnSurface( mPointOnSurface );
4982 x->setPointOnAllParts( mPointOnAllParts );
4983 x->setClipPoints( mClipPoints );
4984 x->setClipOnCurrentPartOnly( mClipOnCurrentPartOnly );
4985 copyDataDefinedProperties( x.get() );
4986 copyPaintEffect( x.get() );
4987 return x.release();
4988}
4989
4990void QgsCentroidFillSymbolLayer::toSld( QDomDocument &doc, QDomElement &element, const QVariantMap &props ) const
4991{
4992 // SLD 1.0 specs says: "if a line, polygon, or raster geometry is
4993 // used with PointSymbolizer, then the semantic is to use the centroid
4994 // of the geometry, or any similar representative point.
4995 mMarker->toSld( doc, element, props );
4996}
4997
4999{
5001 if ( !l )
5002 return nullptr;
5003
5004 QgsSymbolLayerList layers;
5005 layers.append( l );
5006 std::unique_ptr< QgsMarkerSymbol > marker( new QgsMarkerSymbol( layers ) );
5007
5008 std::unique_ptr< QgsCentroidFillSymbolLayer > sl = std::make_unique< QgsCentroidFillSymbolLayer >();
5009 sl->setSubSymbol( marker.release() );
5010 sl->setPointOnAllParts( false );
5011 return sl.release();
5012}
5013
5014
5019
5021{
5022 if ( !symbol || symbol->type() != Qgis::SymbolType::Marker )
5023 {
5024 delete symbol;
5025 return false;
5026 }
5027
5028 mMarker.reset( static_cast<QgsMarkerSymbol *>( symbol ) );
5029 mColor = mMarker->color();
5030 return true;
5031}
5032
5034{
5035 QSet<QString> attributes = QgsFillSymbolLayer::usedAttributes( context );
5036
5037 if ( mMarker )
5038 attributes.unite( mMarker->usedAttributes( context ) );
5039
5040 return attributes;
5041}
5042
5044{
5046 return true;
5047 if ( mMarker && mMarker->hasDataDefinedProperties() )
5048 return true;
5049 return false;
5050}
5051
5056
5058{
5059 if ( mMarker )
5060 {
5061 mMarker->setOutputUnit( unit );
5062 }
5063}
5064
5066{
5067 if ( mMarker )
5068 {
5069 return mMarker->outputUnit();
5070 }
5071 return Qgis::RenderUnit::Unknown; //mOutputUnit;
5072}
5073
5075{
5076 if ( mMarker )
5077 {
5078 return mMarker->usesMapUnits();
5079 }
5080 return false;
5081}
5082
5084{
5085 if ( mMarker )
5086 {
5087 mMarker->setMapUnitScale( scale );
5088 }
5089}
5090
5092{
5093 if ( mMarker )
5094 {
5095 return mMarker->mapUnitScale();
5096 }
5097 return QgsMapUnitScale();
5098}
5099
5100
5101
5102
5105 , mImageFilePath( imageFilePath )
5106{
5107 QgsImageFillSymbolLayer::setSubSymbol( nullptr ); //disable sub symbol
5109}
5110
5112
5113QgsSymbolLayer *QgsRasterFillSymbolLayer::create( const QVariantMap &properties )
5114{
5116 double alpha = 1.0;
5117 QPointF offset;
5118 double angle = 0.0;
5119 double width = 0.0;
5120
5121 QString imagePath;
5122 if ( properties.contains( QStringLiteral( "imageFile" ) ) )
5123 {
5124 imagePath = properties[QStringLiteral( "imageFile" )].toString();
5125 }
5126 if ( properties.contains( QStringLiteral( "coordinate_mode" ) ) )
5127 {
5128 mode = static_cast< Qgis::SymbolCoordinateReference >( properties[QStringLiteral( "coordinate_mode" )].toInt() );
5129 }
5130 if ( properties.contains( QStringLiteral( "alpha" ) ) )
5131 {
5132 alpha = properties[QStringLiteral( "alpha" )].toDouble();
5133 }
5134 if ( properties.contains( QStringLiteral( "offset" ) ) )
5135 {
5136 offset = QgsSymbolLayerUtils::decodePoint( properties[QStringLiteral( "offset" )].toString() );
5137 }
5138 if ( properties.contains( QStringLiteral( "angle" ) ) )
5139 {
5140 angle = properties[QStringLiteral( "angle" )].toDouble();
5141 }
5142 if ( properties.contains( QStringLiteral( "width" ) ) )
5143 {
5144 width = properties[QStringLiteral( "width" )].toDouble();
5145 }
5146 std::unique_ptr< QgsRasterFillSymbolLayer > symbolLayer = std::make_unique< QgsRasterFillSymbolLayer >( imagePath );
5147 symbolLayer->setCoordinateMode( mode );
5148 symbolLayer->setOpacity( alpha );
5149 symbolLayer->setOffset( offset );
5150 symbolLayer->setAngle( angle );
5151 symbolLayer->setWidth( width );
5152 if ( properties.contains( QStringLiteral( "offset_unit" ) ) )
5153 {
5154 symbolLayer->setOffsetUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "offset_unit" )].toString() ) );
5155 }
5156 if ( properties.contains( QStringLiteral( "offset_map_unit_scale" ) ) )
5157 {
5158 symbolLayer->setOffsetMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "offset_map_unit_scale" )].toString() ) );
5159 }
5160 if ( properties.contains( QStringLiteral( "width_unit" ) ) )
5161 {
5162 symbolLayer->setSizeUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "width_unit" )].toString() ) );
5163 }
5164 if ( properties.contains( QStringLiteral( "width_map_unit_scale" ) ) )
5165 {
5166 symbolLayer->setSizeMapUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "width_map_unit_scale" )].toString() ) );
5167 }
5168
5169 if ( properties.contains( QStringLiteral( "height" ) ) )
5170 {
5171 symbolLayer->setHeight( properties[QStringLiteral( "height" )].toDouble() );
5172 }
5173
5174 symbolLayer->restoreOldDataDefinedProperties( properties );
5175
5176 return symbolLayer.release();
5177}
5178
5180{
5181 QDomElement fillElem = element.firstChildElement( QStringLiteral( "Fill" ) );
5182 if ( fillElem.isNull() )
5183 return nullptr;
5184
5185 QDomElement graphicFillElem = fillElem.firstChildElement( QStringLiteral( "GraphicFill" ) );
5186 if ( graphicFillElem.isNull() )
5187 return nullptr;
5188
5189 QDomElement graphicElem = graphicFillElem.firstChildElement( QStringLiteral( "Graphic" ) );
5190 if ( graphicElem.isNull() )
5191 return nullptr;
5192
5193 QString path, mimeType;
5194 double size;
5195 QColor fillColor;
5196
5197 if ( !QgsSymbolLayerUtils::externalGraphicFromSld( graphicElem, path, mimeType, fillColor, size ) )
5198 return nullptr;
5199
5200 // Try to correct the path, this is a wild guess but we have not access to the SLD path here.
5201 if ( ! QFile::exists( path ) )
5202 {
5203 path = QgsProject::instance()->pathResolver().readPath( path ); // skip-keyword-check
5204 }
5205
5206 std::unique_ptr< QgsRasterFillSymbolLayer> sl = std::make_unique< QgsRasterFillSymbolLayer>( path );
5207
5208 return sl.release();
5209}
5210
5211void QgsRasterFillSymbolLayer::resolvePaths( QVariantMap &properties, const QgsPathResolver &pathResolver, bool saving )
5212{
5213 QVariantMap::iterator it = properties.find( QStringLiteral( "imageFile" ) );
5214 if ( it != properties.end() )
5215 {
5216 if ( saving )
5217 it.value() = pathResolver.writePath( it.value().toString() );
5218 else
5219 it.value() = pathResolver.readPath( it.value().toString() );
5220 }
5221}
5222
5224{
5225 Q_UNUSED( symbol )
5226 return true;
5227}
5228
5230{
5231 return QStringLiteral( "RasterFill" );
5232}
5233
5238
5239void QgsRasterFillSymbolLayer::renderPolygon( const QPolygonF &points, const QVector<QPolygonF> *rings, QgsSymbolRenderContext &context )
5240{
5241 QPainter *p = context.renderContext().painter();
5242 if ( !p )
5243 {
5244 return;
5245 }
5246
5247 QPointF offset = mOffset;
5249 {
5252 bool ok = false;
5253 const QPointF res = QgsSymbolLayerUtils::toPoint( val, &ok );
5254 if ( ok )
5255 offset = res;
5256 }
5257 if ( !offset.isNull() )
5258 {
5259 offset.setX( context.renderContext().convertToPainterUnits( offset.x(), mOffsetUnit, mOffsetMapUnitScale ) );
5260 offset.setY( context.renderContext().convertToPainterUnits( offset.y(), mOffsetUnit, mOffsetMapUnitScale ) );
5261 p->translate( offset );
5262 }
5263 if ( mCoordinateMode == Qgis::SymbolCoordinateReference::Feature )
5264 {
5265 QRectF boundingRect = points.boundingRect();
5266 mBrush.setTransform( mBrush.transform().translate( boundingRect.left() - mBrush.transform().dx(),
5267 boundingRect.top() - mBrush.transform().dy() ) );
5268 }
5269
5270 QgsImageFillSymbolLayer::renderPolygon( points, rings, context );
5271 if ( !offset.isNull() )
5272 {
5273 p->translate( -offset );
5274 }
5275}
5276
5278{
5279 applyPattern( mBrush, mImageFilePath, mWidth, mHeight, mOpacity * context.opacity(), context );
5280}
5281
5283{
5284 Q_UNUSED( context )
5285}
5286
5288{
5289 QVariantMap map;
5290 map[QStringLiteral( "imageFile" )] = mImageFilePath;
5291 map[QStringLiteral( "coordinate_mode" )] = QString::number( static_cast< int >( mCoordinateMode ) );
5292 map[QStringLiteral( "alpha" )] = QString::number( mOpacity );
5293 map[QStringLiteral( "offset" )] = QgsSymbolLayerUtils::encodePoint( mOffset );
5294 map[QStringLiteral( "offset_unit" )] = QgsUnitTypes::encodeUnit( mOffsetUnit );
5295 map[QStringLiteral( "offset_map_unit_scale" )] = QgsSymbolLayerUtils::encodeMapUnitScale( mOffsetMapUnitScale );
5296 map[QStringLiteral( "angle" )] = QString::number( mAngle );
5297
5298 map[QStringLiteral( "width" )] = QString::number( mWidth );
5299 map[QStringLiteral( "height" )] = QString::number( mHeight );
5300 map[QStringLiteral( "width_unit" )] = QgsUnitTypes::encodeUnit( mSizeUnit );
5301 map[QStringLiteral( "width_map_unit_scale" )] = QgsSymbolLayerUtils::encodeMapUnitScale( mSizeMapUnitScale );
5302
5303 return map;
5304}
5305
5307{
5308 std::unique_ptr< QgsRasterFillSymbolLayer > sl = std::make_unique< QgsRasterFillSymbolLayer >( mImageFilePath );
5309 sl->setCoordinateMode( mCoordinateMode );
5310 sl->setOpacity( mOpacity );
5311 sl->setOffset( mOffset );
5312 sl->setOffsetUnit( mOffsetUnit );
5313 sl->setOffsetMapUnitScale( mOffsetMapUnitScale );
5314 sl->setAngle( mAngle );
5315 sl->setWidth( mWidth );
5316 sl->setHeight( mHeight );
5317 sl->setSizeUnit( mSizeUnit );
5318 sl->setSizeMapUnitScale( mSizeMapUnitScale );
5319
5320 copyDataDefinedProperties( sl.get() );
5321 copyPaintEffect( sl.get() );
5322 return sl.release();
5323}
5324
5326{
5327 return context.convertToPainterUnits( std::max( std::fabs( mOffset.x() ), std::fabs( mOffset.y() ) ), mOffsetUnit, mOffsetMapUnitScale );
5328}
5329
5331{
5332 return mSizeUnit == Qgis::RenderUnit::MapUnits || mSizeUnit == Qgis::RenderUnit::MetersInMapUnits
5333 || mOffsetUnit == Qgis::RenderUnit::MapUnits || mOffsetUnit == Qgis::RenderUnit::MetersInMapUnits;
5334}
5335
5337{
5338 return QColor();
5339}
5340
5342{
5344 mOffsetUnit = unit;
5345 mSizeUnit = unit;
5346}
5347
5348void QgsRasterFillSymbolLayer::setImageFilePath( const QString &imagePath )
5349{
5350 mImageFilePath = imagePath;
5351}
5352
5354{
5355 mCoordinateMode = mode;
5356}
5357
5358void QgsRasterFillSymbolLayer::setOpacity( const double opacity )
5359{
5360 mOpacity = opacity;
5361}
5362
5364{
5365 if ( !dataDefinedProperties().hasActiveProperties() )
5366 return; // shortcut
5367
5368 const bool hasWidthExpression = mDataDefinedProperties.isActive( QgsSymbolLayer::Property::Width );
5369 const bool hasHeightExpression = mDataDefinedProperties.isActive( QgsSymbolLayer::Property::Height );
5370 const bool hasFileExpression = mDataDefinedProperties.isActive( QgsSymbolLayer::Property::File );
5371 const bool hasOpacityExpression = mDataDefinedProperties.isActive( QgsSymbolLayer::Property::Opacity );
5372 const bool hasAngleExpression = mDataDefinedProperties.isActive( QgsSymbolLayer::Property::Angle );
5373
5374 if ( !hasWidthExpression && !hasHeightExpression && !hasAngleExpression && !hasOpacityExpression && !hasFileExpression )
5375 {
5376 return; //no data defined settings
5377 }
5378
5379 bool ok;
5380 if ( hasAngleExpression )
5381 {
5384 if ( ok )
5385 mNextAngle = nextAngle;
5386 }
5387
5388 if ( !hasWidthExpression && !hasHeightExpression && !hasOpacityExpression && !hasFileExpression )
5389 {
5390 return; //nothing further to do
5391 }
5392
5393 double width = mWidth;
5394 if ( hasWidthExpression )
5395 {
5396 context.setOriginalValueVariable( mWidth );
5398 }
5399 double height = mHeight;
5400 if ( hasHeightExpression )
5401 {
5402 context.setOriginalValueVariable( mHeight );
5404 }
5405 double opacity = mOpacity;
5406 if ( hasOpacityExpression )
5407 {
5408 context.setOriginalValueVariable( mOpacity );
5410 }
5411 QString file = mImageFilePath;
5412 if ( hasFileExpression )
5413 {
5414 context.setOriginalValueVariable( mImageFilePath );
5416 }
5417 applyPattern( mBrush, file, width, height, opacity, context );
5418}
5419
5424
5425void QgsRasterFillSymbolLayer::applyPattern( QBrush &brush, const QString &imageFilePath, const double width, const double height, const double alpha, const QgsSymbolRenderContext &context )
5426{
5427 double imageWidth = 0;
5428 double imageHeight = 0;
5429
5430 // defer retrieval of original size till we actually NEED it
5431 QSize originalSize;
5432
5433 if ( width > 0 )
5434 {
5435 if ( mSizeUnit != Qgis::RenderUnit::Percentage )
5436 {
5437 imageWidth = context.renderContext().convertToPainterUnits( width, mSizeUnit, mSizeMapUnitScale );
5438 }
5439 else
5440 {
5441 // RenderPercentage Unit Type takes original image size
5443 if ( originalSize.isEmpty() )
5444 return;
5445
5446 imageWidth = ( width * originalSize.width() ) / 100.0;
5447
5448 // don't render symbols with size below one or above 10,000 pixels
5449 if ( static_cast< int >( imageWidth ) < 1 || 10000.0 < imageWidth )
5450 return;
5451 }
5452 }
5453 if ( height > 0 )
5454 {
5455 if ( mSizeUnit != Qgis::RenderUnit::Percentage )
5456 {
5457 imageHeight = context.renderContext().convertToPainterUnits( height, mSizeUnit, mSizeMapUnitScale );
5458 }
5459 else
5460 {
5461 // RenderPercentage Unit Type takes original image size
5462 if ( !originalSize.isValid() )
5464
5465 if ( originalSize.isEmpty() )
5466 return;
5467
5468 imageHeight = ( height * originalSize.height() ) / 100.0;
5469
5470 // don't render symbols with size below one or above 10,000 pixels
5471 if ( static_cast< int >( imageHeight ) < 1 || 10000.0 < imageHeight )
5472 return;
5473 }
5474 }
5475
5476 if ( width == 0 && imageHeight > 0 )
5477 {
5478 if ( !originalSize.isValid() )
5480
5481 imageWidth = imageHeight * originalSize.width() / originalSize.height();
5482 }
5483 else if ( height == 0 && imageWidth > 0 )
5484 {
5485 if ( !originalSize.isValid() )
5487
5488 imageHeight = imageWidth * originalSize.height() / originalSize.width();
5489 }
5490 if ( imageWidth == 0 || imageHeight == 0 )
5491 {
5492 if ( !originalSize.isValid() )
5494
5495 imageWidth = originalSize.width();
5496 imageHeight = originalSize.height();
5497 }
5498
5499 bool cached;
5500 QImage img = QgsApplication::imageCache()->pathAsImage( imageFilePath, QSize( std::round< int >( imageWidth ), std::round< int >( imageHeight ) ), false, alpha, cached, ( context.renderContext().flags() & Qgis::RenderContextFlag::RenderBlocking ) );
5501 if ( img.isNull() )
5502 return;
5503
5504 brush.setTextureImage( img );
5505}
5506
5507
5508//
5509// QgsRandomMarkerFillSymbolLayer
5510//
5511
5512QgsRandomMarkerFillSymbolLayer::QgsRandomMarkerFillSymbolLayer( int pointCount, Qgis::PointCountMethod method, double densityArea, unsigned long seed )
5513 : mCountMethod( method )
5514 , mPointCount( pointCount )
5515 , mDensityArea( densityArea )
5516 , mSeed( seed )
5517{
5519}
5520
5522
5524{
5525 const Qgis::PointCountMethod countMethod = static_cast< Qgis::PointCountMethod >( properties.value( QStringLiteral( "count_method" ), QStringLiteral( "0" ) ).toInt() );
5526 const int pointCount = properties.value( QStringLiteral( "point_count" ), QStringLiteral( "10" ) ).toInt();
5527 const double densityArea = properties.value( QStringLiteral( "density_area" ), QStringLiteral( "250.0" ) ).toDouble();
5528
5529 unsigned long seed = 0;
5530 if ( properties.contains( QStringLiteral( "seed" ) ) )
5531 seed = properties.value( QStringLiteral( "seed" ) ).toUInt();
5532 else
5533 {
5534 // if we a creating a new random marker fill from scratch, we default to a random seed
5535 // because seed based fills are just nicer for users vs seeing points jump around with every map refresh
5536 std::random_device rd;
5537 std::mt19937 mt( seed == 0 ? rd() : seed );
5538 std::uniform_int_distribution<> uniformDist( 1, 999999999 );
5539 seed = uniformDist( mt );
5540 }
5541
5542 std::unique_ptr< QgsRandomMarkerFillSymbolLayer > sl = std::make_unique< QgsRandomMarkerFillSymbolLayer >( pointCount, countMethod, densityArea, seed );
5543
5544 if ( properties.contains( QStringLiteral( "density_area_unit" ) ) )
5545 sl->setDensityAreaUnit( QgsUnitTypes::decodeRenderUnit( properties[QStringLiteral( "density_area_unit" )].toString() ) );
5546 if ( properties.contains( QStringLiteral( "density_area_unit_scale" ) ) )
5547 sl->setDensityAreaUnitScale( QgsSymbolLayerUtils::decodeMapUnitScale( properties[QStringLiteral( "density_area_unit_scale" )].toString() ) );
5548
5549 if ( properties.contains( QStringLiteral( "clip_points" ) ) )
5550 {
5551 sl->setClipPoints( properties[QStringLiteral( "clip_points" )].toInt() );
5552 }
5553
5554 return sl.release();
5555}
5556
5558{
5559 return QStringLiteral( "RandomMarkerFill" );
5560}
5561
5563{
5564 mMarker->setColor( color );
5565 mColor = color;
5566}
5567
5569{
5570 return mMarker ? mMarker->color() : mColor;
5571}
5572
5574{
5575 mMarker->setRenderHints( mMarker->renderHints() | Qgis::SymbolRenderHint::IsSymbolLayerSubSymbol );
5576 mMarker->startRender( context.renderContext(), context.fields() );
5577}
5578
5580{
5581 mMarker->stopRender( context.renderContext() );
5582}
5583
5584void QgsRandomMarkerFillSymbolLayer::renderPolygon( const QPolygonF &points, const QVector<QPolygonF> *rings, QgsSymbolRenderContext &context )
5585{
5586 Part part;
5587 part.exterior = points;
5588 if ( rings )
5589 part.rings = *rings;
5590
5591 if ( mRenderingFeature )
5592 {
5593 // in the middle of rendering a possibly multi-part feature, so we collect all the parts and defer the actual rendering
5594 // until after we've received the final part
5595 mFeatureSymbolOpacity = context.opacity();
5596 mCurrentParts << part;
5597 }
5598 else
5599 {
5600 // not rendering a feature, so we can just render the polygon immediately
5601 const double prevOpacity = mMarker->opacity();
5602 mMarker->setOpacity( mMarker->opacity() * context.opacity() );
5603 const bool useSelectedColor = shouldRenderUsingSelectionColor( context );
5604 render( context.renderContext(), QVector< Part>() << part, context.feature() ? *context.feature() : QgsFeature(), useSelectedColor );
5605 mMarker->setOpacity( prevOpacity );
5606 }
5607}
5608
5609void QgsRandomMarkerFillSymbolLayer::render( QgsRenderContext &context, const QVector<QgsRandomMarkerFillSymbolLayer::Part> &parts, const QgsFeature &feature, bool selected )
5610{
5611 bool clipPoints = mClipPoints;
5613 {
5616 }
5617
5618 QVector< QgsGeometry > geometryParts;
5619 geometryParts.reserve( parts.size() );
5620 QPainterPath path;
5621
5622 for ( const Part &part : parts )
5623 {
5624 QgsGeometry geom = QgsGeometry::fromQPolygonF( part.exterior );
5625 if ( !geom.isNull() && !part.rings.empty() )
5626 {
5627 QgsPolygon *poly = qgsgeometry_cast< QgsPolygon * >( geom.get() );
5628 for ( const QPolygonF &ring : part.rings )
5629 {
5631 }
5632 }
5633 if ( !geom.isGeosValid() )
5634 {
5635 geom = geom.buffer( 0, 0 );
5636 }
5637 geometryParts << geom;
5638
5639 if ( clipPoints )
5640 {
5641 path.addPolygon( part.exterior );
5642 for ( const QPolygonF &ring : part.rings )
5643 {
5644 path.addPolygon( ring );
5645 }
5646 }
5647 }
5648
5649 const QgsGeometry geom = geometryParts.count() != 1 ? QgsGeometry::unaryUnion( geometryParts ) : geometryParts.at( 0 );
5650
5651 if ( clipPoints )
5652 {
5653 context.painter()->save();
5654 context.painter()->setClipPath( path );
5655 }
5656
5657
5658 int count = mPointCount;
5660 {
5663 }
5664
5665 switch ( mCountMethod )
5666 {
5668 {
5669 double densityArea = mDensityArea;
5671 {
5674 }
5675 densityArea = context.convertToPainterUnits( std::sqrt( densityArea ), mDensityAreaUnit, mDensityAreaUnitScale );
5676 densityArea = std::pow( densityArea, 2 );
5677 count = std::max( 0.0, std::ceil( count * ( geom.area() / densityArea ) ) );
5678 break;
5679 }
5681 break;
5682 }
5683
5684 unsigned long seed = mSeed;
5686 {
5687 context.expressionContext().setOriginalValueVariable( static_cast< unsigned long long >( seed ) );
5689 }
5690
5691 QVector< QgsPointXY > randomPoints = geom.randomPointsInPolygon( count, seed );
5692#if 0
5693 // in some cases rendering from top to bottom is nice (e.g. randomised tree markers), but in other cases it's not wanted..
5694 // TODO consider exposing this as an option
5695 std::sort( randomPoints.begin(), randomPoints.end(), []( const QgsPointXY & a, const QgsPointXY & b )->bool
5696 {
5697 return a.y() < b.y();
5698 } );
5699#endif
5701 QgsExpressionContextScopePopper scopePopper( context.expressionContext(), scope );
5702 int pointNum = 0;
5703 const bool needsExpressionContext = mMarker->hasDataDefinedProperties();
5704
5705 const bool prevIsSubsymbol = context.flags() & Qgis::RenderContextFlag::RenderingSubSymbol;
5707
5708 for ( const QgsPointXY &p : std::as_const( randomPoints ) )
5709 {
5710 if ( needsExpressionContext )
5712 mMarker->renderPoint( QPointF( p.x(), p.y() ), feature.isValid() ? &feature : nullptr, context, -1, selected );
5713 }
5714
5715 context.setFlag( Qgis::RenderContextFlag::RenderingSubSymbol, prevIsSubsymbol );
5716
5717 if ( clipPoints )
5718 {
5719 context.painter()->restore();
5720 }
5721}
5722
5724{
5725 QVariantMap map;
5726 map.insert( QStringLiteral( "count_method" ), QString::number( static_cast< int >( mCountMethod ) ) );
5727 map.insert( QStringLiteral( "point_count" ), QString::number( mPointCount ) );
5728 map.insert( QStringLiteral( "density_area" ), QString::number( mDensityArea ) );
5729 map.insert( QStringLiteral( "density_area_unit" ), QgsUnitTypes::encodeUnit( mDensityAreaUnit ) );
5730 map.insert( QStringLiteral( "density_area_unit_scale" ), QgsSymbolLayerUtils::encodeMapUnitScale( mDensityAreaUnitScale ) );
5731 map.insert( QStringLiteral( "seed" ), QString::number( mSeed ) );
5732 map.insert( QStringLiteral( "clip_points" ), QString::number( mClipPoints ) );
5733 return map;
5734}
5735
5737{
5738 std::unique_ptr< QgsRandomMarkerFillSymbolLayer > res = std::make_unique< QgsRandomMarkerFillSymbolLayer >( mPointCount, mCountMethod, mDensityArea, mSeed );
5739 res->mAngle = mAngle;
5740 res->mColor = mColor;
5741 res->setDensityAreaUnit( mDensityAreaUnit );
5742 res->setDensityAreaUnitScale( mDensityAreaUnitScale );
5743 res->mClipPoints = mClipPoints;
5744 res->setSubSymbol( mMarker->clone() );
5745 copyDataDefinedProperties( res.get() );
5746 copyPaintEffect( res.get() );
5747 return res.release();
5748}
5749
5754
5756{
5757 return mMarker.get();
5758}
5759
5761{
5762 if ( !symbol || symbol->type() != Qgis::SymbolType::Marker )
5763 {
5764 delete symbol;
5765 return false;
5766 }
5767
5768 mMarker.reset( static_cast<QgsMarkerSymbol *>( symbol ) );
5769 mColor = mMarker->color();
5770 return true;
5771}
5772
5774{
5775 QSet<QString> attributes = QgsFillSymbolLayer::usedAttributes( context );
5776
5777 if ( mMarker )
5778 attributes.unite( mMarker->usedAttributes( context ) );
5779
5780 return attributes;
5781}
5782
5784{
5786 return true;
5787 if ( mMarker && mMarker->hasDataDefinedProperties() )
5788 return true;
5789 return false;
5790}
5791
5793{
5794 return mPointCount;
5795}
5796
5798{
5799 mPointCount = pointCount;
5800}
5801
5803{
5804 return mSeed;
5805}
5806
5808{
5809 mSeed = seed;
5810}
5811
5813{
5814 return mClipPoints;
5815}
5816
5818{
5819 mClipPoints = clipPoints;
5820}
5821
5823{
5824 return mCountMethod;
5825}
5826
5828{
5829 mCountMethod = method;
5830}
5831
5833{
5834 return mDensityArea;
5835}
5836
5838{
5839 mDensityArea = area;
5840}
5841
5843{
5844 installMasks( context, true );
5845
5846 mRenderingFeature = true;
5847 mCurrentParts.clear();
5848}
5849
5851{
5852 mRenderingFeature = false;
5853
5854 const double prevOpacity = mMarker->opacity();
5855 mMarker->setOpacity( mMarker->opacity() * mFeatureSymbolOpacity );
5856
5857 render( context, mCurrentParts, feature, false );
5858
5859 mFeatureSymbolOpacity = 1;
5860 mMarker->setOpacity( prevOpacity );
5861
5862 removeMasks( context, true );
5863}
5864
5865
5867{
5868 mDensityAreaUnit = unit;
5869 if ( mMarker )
5870 {
5871 mMarker->setOutputUnit( unit );
5872 }
5873}
5874
5876{
5877 if ( mMarker )
5878 {
5879 return mMarker->outputUnit();
5880 }
5881 return Qgis::RenderUnit::Unknown; //mOutputUnit;
5882}
5883
5885{
5886 if ( mMarker )
5887 {
5888 return mMarker->usesMapUnits();
5889 }
5890 return false;
5891}
5892
5894{
5895 if ( mMarker )
5896 {
5897 mMarker->setMapUnitScale( scale );
5898 }
5899}
5900
5902{
5903 if ( mMarker )
5904 {
5905 return mMarker->mapUnitScale();
5906 }
5907 return QgsMapUnitScale();
5908}
MarkerClipMode
Marker clipping modes.
Definition qgis.h:3018
@ CompletelyWithin
Render complete markers wherever the completely fall within the polygon shape.
@ NoClipping
No clipping, render complete markers.
@ Shape
Clip to polygon shape.
@ CentroidWithin
Render complete markers wherever their centroid falls within the polygon shape.
@ IsSymbolLayerSubSymbol
Symbol is being rendered as a sub-symbol of a QgsSymbolLayer.
LineClipMode
Line clipping modes.
Definition qgis.h:3032
@ NoClipping
Lines are not clipped, will extend to shape's bounding box.
@ ClipPainterOnly
Applying clipping on the painter only (i.e. line endpoints will coincide with polygon bounding box,...
@ ClipToIntersection
Clip lines to intersection with polygon shape (slower) (i.e. line endpoints will coincide with polygo...
GradientColorSource
Gradient color sources.
Definition qgis.h:2947
@ ColorRamp
Gradient color ramp.
@ SimpleTwoColor
Simple two color gradient.
@ CanCalculateMaskGeometryPerFeature
If present, indicates that mask geometry can safely be calculated per feature for the symbol layer....
GradientSpread
Gradient spread options, which control how gradients are rendered outside of their start and end poin...
Definition qgis.h:2991
@ Repeat
Repeat gradient.
@ Reflect
Reflect gradient.
@ Pad
Pad out gradient using colors at endpoint of gradient.
@ Png
Export complex styles to separate PNG files for better compatibility with OGC servers.
PointCountMethod
Methods which define the number of points randomly filling a polygon.
Definition qgis.h:3006
@ Absolute
The point count is used as an absolute count of markers.
@ DensityBased
The point count is part of a marker density count.
QFlags< SymbolLayerFlag > SymbolLayerFlags
Symbol layer flags.
Definition qgis.h:821
RenderUnit
Rendering size units.
Definition qgis.h:4839
@ Percentage
Percentage of another measurement (e.g., canvas size, feature size)
@ Unknown
Mixed or unknown units.
@ MapUnits
Map units.
@ MetersInMapUnits
Meters value as Map units.
@ RenderingSubSymbol
Set whenever a sub-symbol of a parent symbol is currently being rendered. Can be used during symbol a...
@ RenderSymbolPreview
The render is for a symbol preview only and map based properties may not be available,...
@ RenderMapTile
Draw map such that there are no problems between adjacent tiles.
@ HighQualityImageTransforms
Enable high quality image transformations, which results in better appearance of scaled or rotated ra...
@ RenderBlocking
Render and load remote sources in the same thread to ensure rendering remote sources (svg and images)...
GradientType
Gradient types.
Definition qgis.h:2961
@ Linear
Linear gradient.
@ Conical
Conical (polar) gradient.
@ Radial
Radial (circular) gradient.
QFlags< SymbolRenderHint > SymbolRenderHints
Symbol render hints.
Definition qgis.h:741
@ Marker
Marker symbol.
@ Line
Line symbol.
SymbolCoordinateReference
Symbol coordinate reference modes.
Definition qgis.h:2976
@ Feature
Relative to feature/shape being rendered.
@ Viewport
Relative to the whole viewport/output device.
QColor valueAsColor(int key, const QgsExpressionContext &context, const QColor &defaultColor=QColor(), bool *ok=nullptr) const
Calculates the current value of the property with the specified key and interprets it as a color.
int valueAsInt(int key, const QgsExpressionContext &context, int defaultValue=0, bool *ok=nullptr) const
Calculates the current value of the property with the specified key and interprets it as an integer.
bool valueAsBool(int key, const QgsExpressionContext &context, bool defaultValue=false, bool *ok=nullptr) const
Calculates the current value of the property with the specified key and interprets it as an boolean.
double valueAsDouble(int key, const QgsExpressionContext &context, double defaultValue=0.0, bool *ok=nullptr) const
Calculates the current value of the property with the specified key and interprets it as a double.
QString valueAsString(int key, const QgsExpressionContext &context, const QString &defaultString=QString(), bool *ok=nullptr) const
Calculates the current value of the property with the specified key and interprets it as a string.
static QgsImageCache * imageCache()
Returns the application's image cache, used for caching resampled versions of raster images.
static QgsSvgCache * svgCache()
Returns the application's SVG cache, used for caching SVG images and handling parameter replacement w...
A fill symbol layer which renders a marker symbol at the centroid of a polygon geometry.
static QgsSymbolLayer * createFromSld(QDomElement &element)
QSet< QString > usedAttributes(const QgsRenderContext &context) const override
Returns the set of attributes referenced by the layer.
QVariantMap properties() const override
Should be reimplemented by subclasses to return a string map that contains the configuration informat...
QgsSymbol * subSymbol() override
Returns the symbol's sub symbol, if present.
Qgis::RenderUnit outputUnit() const override
Returns the units to use for sizes and widths within the symbol layer.
void setMapUnitScale(const QgsMapUnitScale &scale) override
bool canCauseArtifactsBetweenAdjacentTiles() const override
Returns true if the symbol layer rendering can cause visible artifacts across a single feature when t...
QgsMapUnitScale mapUnitScale() const override
void startFeatureRender(const QgsFeature &feature, QgsRenderContext &context) override
Called before the layer will be rendered for a particular feature.
std::unique_ptr< QgsMarkerSymbol > mMarker
QString layerType() const override
Returns a string that represents this layer type.
void setColor(const QColor &color) override
Sets the "representative" color for the symbol layer.
bool pointOnAllParts() const
Returns whether a point is drawn for all parts or only on the biggest part of multi-part features.
void renderPolygon(const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context) override
Renders the fill symbol layer for the polygon whose outer ring is defined by points,...
void startRender(QgsSymbolRenderContext &context) override
Called before a set of rendering operations commences on the supplied render context.
bool hasDataDefinedProperties() const override
Returns true if the symbol layer (or any of its sub-symbols) contains data defined properties.
bool setSubSymbol(QgsSymbol *symbol) FINAL
Sets layer's subsymbol. takes ownership of the passed symbol.
void stopFeatureRender(const QgsFeature &feature, QgsRenderContext &context) override
Called after the layer has been rendered for a particular feature.
void setOutputUnit(Qgis::RenderUnit unit) override
Sets the units to use for sizes and widths within the symbol layer.
bool usesMapUnits() const override
Returns true if the symbol layer has any components which use map unit based sizes.
bool clipPoints() const
Returns true if point markers should be clipped to the polygon boundary.
QgsCentroidFillSymbolLayer * clone() const override
Shall be reimplemented by subclasses to create a deep copy of the instance.
void toSld(QDomDocument &doc, QDomElement &element, const QVariantMap &props) const override
Saves the symbol layer as SLD.
static QgsSymbolLayer * create(const QVariantMap &properties=QVariantMap())
Creates a new QgsCentroidFillSymbolLayer using the specified properties map containing symbol propert...
~QgsCentroidFillSymbolLayer() override
void stopRender(QgsSymbolRenderContext &context) override
Called after a set of rendering operations has finished on the supplied render context.
QColor color() const override
Returns the "representative" color of the symbol layer.
bool clipOnCurrentPartOnly() const
Returns true if point markers should be clipped to the current part boundary only.
Abstract base class for color ramps.
virtual QColor color(double value) const =0
Returns the color corresponding to a specified value.
virtual QVariantMap properties() const =0
Returns a string map containing all the color ramp's properties.
virtual QgsColorRamp * clone() const =0
Creates a clone of the color ramp.
virtual QString type() const =0
Returns a string representing the color ramp type.
static QColor colorFromString(const QString &string)
Decodes a string into a color value.
static QString colorToString(const QColor &color)
Encodes a color into a string value.
static QgsColorRamp * create(const QVariantMap &properties=QVariantMap())
Creates the symbol layer.
static QString typeString()
Returns the string identifier for QgsCptCityColorRamp.
double area() const override
Returns the planar, 2-dimensional area of the geometry.
Exports QGIS layers to the DXF format.
static double mapUnitScaleFactor(double scale, Qgis::RenderUnit symbolUnits, Qgis::DistanceUnit mapUnits, double mapUnitsPerPixel=1.0)
Returns scale factor for conversion to map units.
Qgis::DistanceUnit mapUnits() const
Retrieve map units.
double symbologyScale() const
Returns the reference scale for output.
RAII class to pop scope from an expression context on destruction.
Single scope for storing variables and functions for use within a QgsExpressionContext.
void addVariable(const QgsExpressionContextScope::StaticVariable &variable)
Adds a variable into the context scope.
static const QString EXPR_GEOMETRY_POINT_NUM
Inbuilt variable name for point number variable.
void setOriginalValueVariable(const QVariant &value)
Sets the original value variable value for the context.
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Definition qgsfeature.h:58
bool isValid() const
Returns the validity of this feature.
bool isCanceled() const
Tells whether the operation has been canceled already.
Definition qgsfeedback.h:53
static QString uniquePath(const QString &path)
Creates a unique file path name from a desired path by appending _<n> (where <n> is an integer number...
void _renderPolygon(QPainter *p, const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context)
Default method to render polygon.
double angle() const
Returns the rotation angle of the fill symbol, in degrees clockwise.
A geometry is the spatial representation of a feature.
QVector< QgsPointXY > randomPointsInPolygon(int count, const std::function< bool(const QgsPointXY &) > &acceptPoint, unsigned long seed=0, QgsFeedback *feedback=nullptr, int maxTriesPerPoint=0) const
Returns a list of count random points generated inside a (multi)polygon geometry (if acceptPoint is s...
static QgsGeometry fromRect(const QgsRectangle &rect)
Creates a new geometry from a QgsRectangle.
static QgsGeometry fromQPolygonF(const QPolygonF &polygon)
Construct geometry from a QPolygonF.
QgsAbstractGeometry * get()
Returns a modifiable (non-const) reference to the underlying abstract geometry primitive.
const QgsAbstractGeometry * constGet() const
Returns a non-modifiable (const) reference to the underlying abstract geometry primitive.
bool contains(const QgsPointXY *p) const
Returns true if the geometry contains the point p.
bool isGeosValid(Qgis::GeometryValidityFlags flags=Qgis::GeometryValidityFlags()) const
Checks validity of the geometry using GEOS.
double area() const
Returns the planar, 2-dimensional area of the geometry.
QgsGeometry buffer(double distance, int segments) const
Returns a buffer region around this geometry having the given width and with a specified number of se...
static QgsGeometry unaryUnion(const QVector< QgsGeometry > &geometries, const QgsGeometryParameters &parameters=QgsGeometryParameters())
Compute the unary union on a list of geometries.
static QgsGeometryEngine * createGeometryEngine(const QgsAbstractGeometry *geometry, double precision=0.0, Qgis::GeosCreationFlags flags=Qgis::GeosCreationFlag::SkipEmptyInteriorRings)
Creates and returns a new geometry engine representing the specified geometry using precision on a gr...
Gradient color ramp, which smoothly interpolates between two colors and also supports optional extra ...
static QgsColorRamp * create(const QVariantMap &properties=QVariantMap())
Creates a new QgsColorRamp from a map of properties.
static QString typeString()
Returns the string identifier for QgsGradientColorRamp.
void addStopsToGradient(QGradient *gradient, double opacity=1) const
Copy color ramp stops to a QGradient.
A fill symbol layer which draws a smooth color gradient over a polygon.
void setColorRamp(QgsColorRamp *ramp)
Sets the color ramp used for the gradient fill.
Qgis::RenderUnit outputUnit() const override
Returns the units to use for sizes and widths within the symbol layer.
QColor color2() const
Returns the color for endpoint of gradient, only used if the gradient color type is set to SimpleTwoC...
void renderPolygon(const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context) override
Renders the fill symbol layer for the polygon whose outer ring is defined by points,...
void stopRender(QgsSymbolRenderContext &context) override
Called after a set of rendering operations has finished on the supplied render context.
bool canCauseArtifactsBetweenAdjacentTiles() const override
Returns true if the symbol layer rendering can cause visible artifacts across a single feature when t...
QgsGradientFillSymbolLayer * clone() const override
Shall be reimplemented by subclasses to create a deep copy of the instance.
QgsMapUnitScale mapUnitScale() const override
bool usesMapUnits() const override
Returns true if the symbol layer has any components which use map unit based sizes.
Qgis::SymbolCoordinateReference coordinateMode() const
Returns the coordinate mode for gradient, which controls how the gradient stops are positioned.
QVariantMap properties() const override
Should be reimplemented by subclasses to return a string map that contains the configuration informat...
Qgis::SymbolCoordinateReference mCoordinateMode
QgsGradientFillSymbolLayer(const QColor &color=DEFAULT_SIMPLEFILL_COLOR, const QColor &color2=Qt::white, Qgis::GradientColorSource gradientColorType=Qgis::GradientColorSource::SimpleTwoColor, Qgis::GradientType gradientType=Qgis::GradientType::Linear, Qgis::SymbolCoordinateReference coordinateMode=Qgis::SymbolCoordinateReference::Feature, Qgis::GradientSpread gradientSpread=Qgis::GradientSpread::Pad)
Constructor for QgsGradientFillSymbolLayer.
static QgsSymbolLayer * create(const QVariantMap &properties=QVariantMap())
Creates a new QgsGradientFillSymbolLayer using the specified properties map containing symbol propert...
void setMapUnitScale(const QgsMapUnitScale &scale) override
double estimateMaxBleed(const QgsRenderContext &context) const override
Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when ...
Qgis::GradientSpread mGradientSpread
void setOutputUnit(Qgis::RenderUnit unit) override
Sets the units to use for sizes and widths within the symbol layer.
QPointF referencePoint1() const
Returns the starting point of gradient fill, in the range [0,0] - [1,1].
Qgis::GradientSpread gradientSpread() const
Returns the gradient spread mode, which controls how the gradient behaves outside of the predefined s...
Qgis::GradientColorSource gradientColorType() const
Returns the gradient color mode, which controls how gradient color stops are created.
QPointF offset() const
Returns the offset by which polygons will be translated during rendering.
Qgis::GradientColorSource mGradientColorType
void startRender(QgsSymbolRenderContext &context) override
Called before a set of rendering operations commences on the supplied render context.
Qgis::SymbolLayerFlags flags() const override
Returns flags which control the symbol layer's behavior.
QString layerType() const override
Returns a string that represents this layer type.
Qgis::GradientType gradientType() const
Returns the type of gradient, e.g., linear or radial.
QPointF referencePoint2() const
Returns the end point of gradient fill, in the range [0,0] - [1,1].
QSize originalSize(const QString &path, bool blocking=false) const
Returns the original size (in pixels) of the image at the specified path.
QImage pathAsImage(const QString &path, const QSize size, const bool keepAspectRatio, const double opacity, bool &fitsInCache, bool blocking=false, double targetDpi=96, int frameNumber=-1, bool *isMissing=nullptr)
Returns the specified path rendered as an image.
Base class for polygon renderers generating texture images.
QgsMapUnitScale mStrokeWidthMapUnitScale
Qgis::SymbolCoordinateReference coordinateReference() const
Returns the coordinate reference mode for fill which controls how the top left corner of the image fi...
double mStrokeWidth
Stroke width.
Qgis::SymbolCoordinateReference mCoordinateReference
double dxfWidth(const QgsDxfExport &e, QgsSymbolRenderContext &context) const override
Gets line width.
QgsMapUnitScale mapUnitScale() const override
Qt::PenStyle dxfPenStyle() const override
Gets pen style.
Qgis::RenderUnit mStrokeWidthUnit
void setOutputUnit(Qgis::RenderUnit unit) override
Sets the units to use for sizes and widths within the symbol layer.
void setMapUnitScale(const QgsMapUnitScale &scale) override
virtual void applyDataDefinedSettings(QgsSymbolRenderContext &context)
Applies data defined settings prior to generating the fill symbol brush.
Qgis::RenderUnit outputUnit() const override
Returns the units to use for sizes and widths within the symbol layer.
void renderPolygon(const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context) override
Renders the fill symbol layer for the polygon whose outer ring is defined by points,...
QVariantMap properties() const override
Should be reimplemented by subclasses to return a string map that contains the configuration informat...
~QgsImageFillSymbolLayer() override
virtual bool applyBrushTransformFromContext(QgsSymbolRenderContext *context=nullptr) const
Returns true if the image brush should be transformed using the render context's texture origin.
static void multiplyOpacity(QImage &image, double factor, QgsFeedback *feedback=nullptr)
Multiplies opacity of image pixel values by a factor.
static void stackBlur(QImage &image, int radius, bool alphaOnly=false, QgsFeedback *feedback=nullptr)
Performs a stack blur on an image.
A symbol fill consisting of repeated parallel lines.
Qgis::RenderUnit outputUnit() const override
Returns the units to use for sizes and widths within the symbol layer.
QgsMapUnitScale mapUnitScale() const override
void startRender(QgsSymbolRenderContext &context) override
Called before a set of rendering operations commences on the supplied render context.
QString layerType() const override
Returns a string that represents this layer type.
QgsLinePatternFillSymbolLayer * clone() const override
Shall be reimplemented by subclasses to create a deep copy of the instance.
void stopFeatureRender(const QgsFeature &feature, QgsRenderContext &context) override
Called after the layer has been rendered for a particular feature.
void startFeatureRender(const QgsFeature &feature, QgsRenderContext &context) override
Called before the layer will be rendered for a particular feature.
QColor color() const override
Returns the "representative" color of the symbol layer.
void toSld(QDomDocument &doc, QDomElement &element, const QVariantMap &props) const override
Saves the symbol layer as SLD.
double lineWidth() const
Returns the width of the line subsymbol used to render the parallel lines in the fill.
bool usesMapUnits() const override
Returns true if the symbol layer has any components which use map unit based sizes.
void setMapUnitScale(const QgsMapUnitScale &scale) override
Qgis::LineClipMode clipMode() const
Returns the line clipping mode, which defines how lines are clipped at the edges of shapes.
double lineAngle() const
Returns the angle for the parallel lines used to fill the symbol.
void setLineWidth(double w)
Sets the width of the line subsymbol used to render the parallel lines in the fill.
void renderPolygon(const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context) override
Renders the fill symbol layer for the polygon whose outer ring is defined by points,...
QSet< QString > usedAttributes(const QgsRenderContext &context) const override
Returns the set of attributes referenced by the layer.
void applyDataDefinedSettings(QgsSymbolRenderContext &context) override
Applies data defined settings prior to generating the fill symbol brush.
bool setSubSymbol(QgsSymbol *symbol) override
Sets layer's subsymbol. takes ownership of the passed symbol.
QgsSymbol * subSymbol() override
Returns the symbol's sub symbol, if present.
bool hasDataDefinedProperties() const override
Returns true if the symbol layer (or any of its sub-symbols) contains data defined properties.
QVariantMap properties() const override
Should be reimplemented by subclasses to return a string map that contains the configuration informat...
void setColor(const QColor &c) override
Sets the "representative" color for the symbol layer.
QImage toTiledPatternImage() const override
Renders the symbol layer as an image that can be used as a seamless pattern fill for polygons,...
double offset() const
Returns the offset distance for lines within the fill, which is the distance to offset the parallel l...
double distance() const
Returns the distance between lines in the fill pattern.
void setOutputUnit(Qgis::RenderUnit unit) override
Sets the units to use for sizes and widths within the symbol layer.
QString ogrFeatureStyleWidth(double widthScaleFactor) const
void stopRender(QgsSymbolRenderContext &context) override
Called after a set of rendering operations has finished on the supplied render context.
~QgsLinePatternFillSymbolLayer() override
double estimateMaxBleed(const QgsRenderContext &context) const override
Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when ...
static QgsSymbolLayer * createFromSld(QDomElement &element)
Creates a new QgsLinePatternFillSymbolLayer from a SLD element.
static QgsSymbolLayer * create(const QVariantMap &properties=QVariantMap())
Creates a new QgsLinePatternFillSymbolLayer from a properties map.
Line string geometry type, with support for z-dimension and m-values.
QPolygonF asQPolygonF() const override
Returns a QPolygonF representing the points.
static QgsLineString * fromQPolygonF(const QPolygonF &polygon)
Returns a new linestring from a QPolygonF polygon input.
A line symbol type, for rendering LineString and MultiLineString geometries.
Perform transforms between map coordinates and device coordinates.
double mapUnitsPerPixel() const
Returns the current map units per pixel.
Struct for storing maximum and minimum scales for measurements in map units.
Line symbol layer type which draws repeating marker symbols along a line feature.
Abstract base class for marker symbol layers.
A marker symbol type, for rendering Point and MultiPoint geometries.
static void logMessage(const QString &message, const QString &tag=QString(), Qgis::MessageLevel level=Qgis::MessageLevel::Warning, bool notifyUser=true)
Adds a message to the log instance (and creates it if necessary).
Resolves relative paths into absolute paths and vice versa.
QString writePath(const QString &filename) const
Prepare a filename to save it to the project file.
QString readPath(const QString &filename) const
Turn filename read from the project file to an absolute path.
A fill symbol layer which fills polygon shapes with repeating marker symbols.
QgsMapUnitScale mapUnitScale() const override
void stopRender(QgsSymbolRenderContext &context) override
Called after a set of rendering operations has finished on the supplied render context.
void renderPolygon(const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context) override
Renders the fill symbol layer for the polygon whose outer ring is defined by points,...
double distanceX() const
Returns the horizontal distance between rendered markers in the fill.
QImage toTiledPatternImage() const override
Renders the symbol layer as an image that can be used as a seamless pattern fill for polygons,...
double displacementY() const
Returns the vertical displacement for odd numbered columns in the pattern.
void setColor(const QColor &c) override
Sets the "representative" color for the symbol layer.
void startFeatureRender(const QgsFeature &feature, QgsRenderContext &context) override
Called before the layer will be rendered for a particular feature.
static QgsSymbolLayer * create(const QVariantMap &properties=QVariantMap())
Creates a new QgsPointPatternFillSymbolLayer using the specified properties map containing symbol pro...
unsigned long seed() const
Returns the random number seed to use when randomly shifting points, or 0 if a truly random sequence ...
Qgis::MarkerClipMode clipMode() const
Returns the marker clipping mode, which defines how markers are clipped at the edges of shapes.
bool hasDataDefinedProperties() const override
Returns true if the symbol layer (or any of its sub-symbols) contains data defined properties.
double offsetY() const
Returns the vertical offset values for points in the pattern.
QgsSymbol * subSymbol() override
Returns the symbol's sub symbol, if present.
void setMapUnitScale(const QgsMapUnitScale &scale) override
double estimateMaxBleed(const QgsRenderContext &context) const override
Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when ...
void startRender(QgsSymbolRenderContext &context) override
Called before a set of rendering operations commences on the supplied render context.
QString layerType() const override
Returns a string that represents this layer type.
void applyDataDefinedSettings(QgsSymbolRenderContext &context) override
Applies data defined settings prior to generating the fill symbol brush.
QVariantMap properties() const override
Should be reimplemented by subclasses to return a string map that contains the configuration informat...
void stopFeatureRender(const QgsFeature &feature, QgsRenderContext &context) override
Called after the layer has been rendered for a particular feature.
QColor color() const override
Returns the "representative" color of the symbol layer.
void toSld(QDomDocument &doc, QDomElement &element, const QVariantMap &props) const override
Saves the symbol layer as SLD.
double offsetX() const
Returns the horizontal offset values for points in the pattern.
Qgis::RenderUnit outputUnit() const override
Returns the units to use for sizes and widths within the symbol layer.
std::unique_ptr< QgsMarkerSymbol > mMarkerSymbol
bool usesMapUnits() const override
Returns true if the symbol layer has any components which use map unit based sizes.
QgsPointPatternFillSymbolLayer * clone() const override
Shall be reimplemented by subclasses to create a deep copy of the instance.
double displacementX() const
Returns the horizontal displacement for odd numbered rows in the pattern.
void setOutputUnit(Qgis::RenderUnit unit) override
Sets the units to use for sizes and widths within the symbol layer.
QSet< QString > usedAttributes(const QgsRenderContext &context) const override
Returns the set of attributes referenced by the layer.
~QgsPointPatternFillSymbolLayer() override
bool setSubSymbol(QgsSymbol *symbol) override
Sets layer's subsymbol. takes ownership of the passed symbol.
double distanceY() const
Returns the vertical distance between rendered markers in the fill.
void setClipMode(Qgis::MarkerClipMode mode)
Sets the marker clipping mode, which defines how markers are clipped at the edges of shapes.
static QgsSymbolLayer * createFromSld(QDomElement &element)
A class to represent a 2D point.
Definition qgspointxy.h:60
Point geometry type, with support for z-dimension and m-values.
Definition qgspoint.h:49
double x
Definition qgspoint.h:52
double y
Definition qgspoint.h:53
Polygon geometry type.
Definition qgspolygon.h:33
void addInteriorRing(QgsCurve *ring) override
Adds an interior ring to the geometry (takes ownership)
static QgsProject * instance()
Returns the QgsProject singleton instance.
QgsPathResolver pathResolver() const
Returns path resolver object with considering whether the project uses absolute or relative paths and...
QVariant value(int key, const QgsExpressionContext &context, const QVariant &defaultValue=QVariant()) const final
Returns the calculated value of the property with the specified key from within the collection.
bool isActive(int key) const final
Returns true if the collection contains an active property with the specified key.
static QVariantMap propertyMapToVariantMap(const QMap< QString, QgsProperty > &propertyMap)
Convert a map of QgsProperty to a map of QVariant This is useful to save a map of properties.
static QMap< QString, QgsProperty > variantMapToPropertyMap(const QVariantMap &variantMap)
Convert a map of QVariant to a map of QgsProperty This is useful to restore a map of properties.
A fill symbol layer which places markers at random locations within polygons.
~QgsRandomMarkerFillSymbolLayer() override
int pointCount() const
Returns the count of random points to render in the fill.
bool usesMapUnits() const override
Returns true if the symbol layer has any components which use map unit based sizes.
void startFeatureRender(const QgsFeature &feature, QgsRenderContext &context) override
Called before the layer will be rendered for a particular feature.
QgsRandomMarkerFillSymbolLayer(int pointCount=10, Qgis::PointCountMethod method=Qgis::PointCountMethod::Absolute, double densityArea=250.0, unsigned long seed=0)
Constructor for QgsRandomMarkerFillSymbolLayer, with the specified pointCount.
unsigned long seed() const
Returns the random number seed to use when generating points, or 0 if a truly random sequence will be...
static QgsSymbolLayer * create(const QVariantMap &properties=QVariantMap())
Creates a new QgsRandomMarkerFillSymbolLayer using the specified properties map containing symbol pro...
void renderPolygon(const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context) override
Renders the fill symbol layer for the polygon whose outer ring is defined by points,...
QString layerType() const override
Returns a string that represents this layer type.
QVariantMap properties() const override
Should be reimplemented by subclasses to return a string map that contains the configuration informat...
QgsRandomMarkerFillSymbolLayer * clone() const override
Shall be reimplemented by subclasses to create a deep copy of the instance.
Qgis::RenderUnit outputUnit() const override
Returns the units to use for sizes and widths within the symbol layer.
void setMapUnitScale(const QgsMapUnitScale &scale) override
bool hasDataDefinedProperties() const override
Returns true if the symbol layer (or any of its sub-symbols) contains data defined properties.
void stopFeatureRender(const QgsFeature &feature, QgsRenderContext &context) override
Called after the layer has been rendered for a particular feature.
void startRender(QgsSymbolRenderContext &context) override
Called before a set of rendering operations commences on the supplied render context.
void setCountMethod(Qgis::PointCountMethod method)
Sets the count method used to randomly fill the polygon.
bool clipPoints() const
Returns true if point markers should be clipped to the polygon boundary.
bool canCauseArtifactsBetweenAdjacentTiles() const override
Returns true if the symbol layer rendering can cause visible artifacts across a single feature when t...
void setClipPoints(bool clipped)
Sets whether point markers should be clipped to the polygon boundary.
QgsSymbol * subSymbol() override
Returns the symbol's sub symbol, if present.
void stopRender(QgsSymbolRenderContext &context) override
Called after a set of rendering operations has finished on the supplied render context.
QColor color() const override
Returns the "representative" color of the symbol layer.
void setSeed(unsigned long seed)
Sets the random number seed to use when generating points, or 0 if a truly random sequence will be us...
QSet< QString > usedAttributes(const QgsRenderContext &context) const override
Returns the set of attributes referenced by the layer.
void setPointCount(int count)
Sets the count of random points to render in the fill.
Qgis::PointCountMethod countMethod() const
Returns the count method used to randomly fill the polygon.
double densityArea() const
Returns the density area used to count the number of points to randomly fill the polygon.
void setColor(const QColor &color) override
Sets the "representative" color for the symbol layer.
bool setSubSymbol(QgsSymbol *symbol) FINAL
Sets layer's subsymbol. takes ownership of the passed symbol.
void setDensityArea(double area)
Sets the density area used to count the number of points to randomly fill the polygon.
void setOutputUnit(Qgis::RenderUnit unit) override
Sets the units to use for sizes and widths within the symbol layer.
QgsMapUnitScale mapUnitScale() const override
A class for filling symbols with a repeated raster image.
void applyDataDefinedSettings(QgsSymbolRenderContext &context) override
Applies data defined settings prior to generating the fill symbol brush.
void stopRender(QgsSymbolRenderContext &context) override
Called after a set of rendering operations has finished on the supplied render context.
double width() const
Returns the width used for scaling the image used in the fill.
double estimateMaxBleed(const QgsRenderContext &context) const override
Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when ...
Qgis::SymbolLayerFlags flags() const override
Returns flags which control the symbol layer's behavior.
void renderPolygon(const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context) override
Renders the fill symbol layer for the polygon whose outer ring is defined by points,...
static QgsSymbolLayer * createFromSld(QDomElement &element)
Creates a new QgsRasterFillSymbolLayer from a SLD element.
static QgsSymbolLayer * create(const QVariantMap &properties=QVariantMap())
Creates a new QgsRasterFillSymbolLayer from a properties map.
QString layerType() const override
Returns a string that represents this layer type.
void setOutputUnit(Qgis::RenderUnit unit) override
Sets the units to use for sizes and widths within the symbol layer.
QgsRasterFillSymbolLayer(const QString &imageFilePath=QString())
Constructor for QgsRasterFillSymbolLayer, using a raster fill from the specified imageFilePath.
double opacity() const
Returns the opacity for the raster image used in the fill.
~QgsRasterFillSymbolLayer() override
void setOpacity(double opacity)
Sets the opacity for the raster image used in the fill.
QColor color() const override
Returns the "representative" color of the symbol layer.
QVariantMap properties() const override
Should be reimplemented by subclasses to return a string map that contains the configuration informat...
void startRender(QgsSymbolRenderContext &context) override
Called before a set of rendering operations commences on the supplied render context.
QString imageFilePath() const
The path to the raster image used for the fill.
void setImageFilePath(const QString &imagePath)
Sets the path to the raster image used for the fill.
double height() const
Returns the height used for scaling the image used in the fill.
static void resolvePaths(QVariantMap &properties, const QgsPathResolver &pathResolver, bool saving)
Turns relative paths in properties map to absolute when reading and vice versa when writing.
QPointF offset() const
Returns the offset for the fill.
bool usesMapUnits() const override
Returns true if the symbol layer has any components which use map unit based sizes.
bool setSubSymbol(QgsSymbol *symbol) override
Sets layer's subsymbol. takes ownership of the passed symbol.
QgsRasterFillSymbolLayer * clone() const override
Shall be reimplemented by subclasses to create a deep copy of the instance.
bool applyBrushTransformFromContext(QgsSymbolRenderContext *context=nullptr) const override
Returns true if the image brush should be transformed using the render context's texture origin.
void setCoordinateMode(Qgis::SymbolCoordinateReference mode)
Set the coordinate mode for fill.
A rectangle specified with double values.
QgsPointXY center() const
Returns the center point of the rectangle.
Contains information about the context of a rendering operation.
void setForceVectorOutput(bool force)
Sets whether rendering operations should use vector operations instead of any faster raster shortcuts...
double scaleFactor() const
Returns the scaling factor for the render to convert painter units to physical sizes.
void setScaleFactor(double factor)
Sets the scaling factor for the render to convert painter units to physical sizes.
QSet< QString > disabledSymbolLayersV2() const
When rendering a map layer in a second pass (for selective masking), some symbol layers may be disabl...
double convertToPainterUnits(double size, Qgis::RenderUnit unit, const QgsMapUnitScale &scale=QgsMapUnitScale(), Qgis::RenderSubcomponentProperty property=Qgis::RenderSubcomponentProperty::Generic) const
Converts a size from the specified units to painter units (pixels).
QPainter * painter()
Returns the destination QPainter for the render operation.
double rendererScale() const
Returns the renderer map scale.
void setPainterFlagsUsingContext(QPainter *painter=nullptr) const
Sets relevant flags on a destination painter, using the flags and settings currently defined for the ...
QgsExpressionContext & expressionContext()
Gets the expression context.
void setDisabledSymbolLayersV2(const QSet< QString > &symbolLayers)
When rendering a map layer in a second pass (for selective masking), some symbol layers may be disabl...
void setFlag(Qgis::RenderContextFlag flag, bool on=true)
Enable or disable a particular flag (other flags are not affected)
const QgsMapToPixel & mapToPixel() const
Returns the context's map to pixel transform, which transforms between map coordinates and device coo...
QColor selectionColor() const
Returns the color to use when rendering selected features.
void setMapToPixel(const QgsMapToPixel &mtp)
Sets the context's map to pixel transform, which transforms between map coordinates and device coordi...
QgsFeedback * feedback() const
Returns the feedback object that can be queried regularly during rendering to check if rendering shou...
QPointF textureOrigin() const
Returns the texture origin, which should be used as a brush transform when rendering using QBrush obj...
void setPainter(QPainter *p)
Sets the destination QPainter for the render operation.
bool renderingStopped() const
Returns true if the rendering operation has been stopped and any ongoing rendering should be canceled...
static QgsRenderContext fromQPainter(QPainter *painter)
Creates a default render context given a pixel based QPainter destination.
void setExpressionContext(const QgsExpressionContext &context)
Sets the expression context.
void setRendererScale(double scale)
Sets the renderer map scale.
Qgis::RenderContextFlags flags() const
Returns combination of flags used for rendering.
const QgsPathResolver & pathResolver() const
Returns the path resolver for conversion between relative and absolute paths during rendering operati...
A class for filling symbols with a repeated SVG file.
void renderPolygon(const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context) override
Renders the fill symbol layer for the polygon whose outer ring is defined by points,...
void setParameters(const QMap< QString, QgsProperty > &parameters)
Sets the dynamic SVG parameters.
QString svgFilePath() const
Returns the path to the SVG file used to render the fill.
void startRender(QgsSymbolRenderContext &context) override
Called before a set of rendering operations commences on the supplied render context.
QColor dxfColor(QgsSymbolRenderContext &context) const override
Gets color.
static QgsSymbolLayer * createFromSld(QDomElement &element)
Creates a new QgsSVGFillSymbolLayer from a SLD element.
bool setSubSymbol(QgsSymbol *symbol) override
Sets layer's subsymbol. takes ownership of the passed symbol.
QColor svgStrokeColor() const
Returns the stroke color used for rendering the SVG content.
bool usesMapUnits() const override
Returns true if the symbol layer has any components which use map unit based sizes.
void stopRender(QgsSymbolRenderContext &context) override
Called after a set of rendering operations has finished on the supplied render context.
Qgis::RenderUnit patternWidthUnit() const
Returns the units for the width of the SVG images in the pattern.
const QgsMapUnitScale & svgStrokeWidthMapUnitScale() const
Returns the map unit scale for the pattern's stroke.
double svgStrokeWidth() const
Returns the stroke width used for rendering the SVG content.
QString layerType() const override
Returns a string that represents this layer type.
void setOutputUnit(Qgis::RenderUnit unit) override
Sets the units to use for sizes and widths within the symbol layer.
QMap< QString, QgsProperty > parameters() const
Returns the dynamic SVG parameters.
QgsSVGFillSymbolLayer * clone() const override
Shall be reimplemented by subclasses to create a deep copy of the instance.
double estimateMaxBleed(const QgsRenderContext &context) const override
Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when ...
QSet< QString > usedAttributes(const QgsRenderContext &context) const override
Returns the set of attributes referenced by the layer.
QgsSVGFillSymbolLayer(const QString &svgFilePath, double width=20, double rotation=0.0)
Constructor for QgsSVGFillSymbolLayer, using the SVG picture at the specified absolute file path.
void setSvgFilePath(const QString &svgPath)
Sets the path to the SVG file to render in the fill.
static QgsSymbolLayer * create(const QVariantMap &properties=QVariantMap())
Creates a new QgsSVGFillSymbolLayer from a properties map.
QColor svgFillColor() const
Returns the fill color used for rendering the SVG content.
static void resolvePaths(QVariantMap &properties, const QgsPathResolver &pathResolver, bool saving)
Turns relative paths in properties map to absolute when reading and vice versa when writing.
QVariantMap properties() const override
Should be reimplemented by subclasses to return a string map that contains the configuration informat...
const QgsMapUnitScale & patternWidthMapUnitScale() const
Returns the map unit scale for the pattern's width.
Qgis::RenderUnit svgStrokeWidthUnit() const
Returns the units for the stroke width.
double patternWidth() const
Returns the width of the rendered SVG content within the fill (i.e.
bool hasDataDefinedProperties() const override
Returns true if the symbol layer (or any of its sub-symbols) contains data defined properties.
~QgsSVGFillSymbolLayer() override
void setMapUnitScale(const QgsMapUnitScale &scale) override
void toSld(QDomDocument &doc, QDomElement &element, const QVariantMap &props) const override
Saves the symbol layer as SLD.
void applyDataDefinedSettings(QgsSymbolRenderContext &context) override
Applies data defined settings prior to generating the fill symbol brush.
QgsMapUnitScale mapUnitScale() const override
Qgis::RenderUnit outputUnit() const override
Returns the units to use for sizes and widths within the symbol layer.
QgsSymbol * subSymbol() override
Returns the symbol's sub symbol, if present.
Scoped object for saving and restoring a QPainter object's state.
void startRender(QgsSymbolRenderContext &context) override
Called before a set of rendering operations commences on the supplied render context.
QgsShapeburstFillSymbolLayer(const QColor &color=DEFAULT_SIMPLEFILL_COLOR, const QColor &color2=Qt::white, Qgis::GradientColorSource colorType=Qgis::GradientColorSource::SimpleTwoColor, int blurRadius=0, bool useWholeShape=true, double maxDistance=5)
Constructor for QgsShapeburstFillSymbolLayer.
QgsShapeburstFillSymbolLayer * clone() const override
Shall be reimplemented by subclasses to create a deep copy of the instance.
~QgsShapeburstFillSymbolLayer() override
int blurRadius() const
Returns the blur radius, which controls the amount of blurring applied to the fill.
QVariantMap properties() const override
Should be reimplemented by subclasses to return a string map that contains the configuration informat...
bool usesMapUnits() const override
Returns true if the symbol layer has any components which use map unit based sizes.
void setOutputUnit(Qgis::RenderUnit unit) override
Sets the units to use for sizes and widths within the symbol layer.
void stopRender(QgsSymbolRenderContext &context) override
Called after a set of rendering operations has finished on the supplied render context.
QColor color2() const
Returns the color used for the endpoint of the shapeburst fill.
void setMapUnitScale(const QgsMapUnitScale &scale) override
QgsMapUnitScale mapUnitScale() const override
void renderPolygon(const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context) override
Renders the fill symbol layer for the polygon whose outer ring is defined by points,...
bool canCauseArtifactsBetweenAdjacentTiles() const override
Returns true if the symbol layer rendering can cause visible artifacts across a single feature when t...
static QgsSymbolLayer * create(const QVariantMap &properties=QVariantMap())
Creates a new QgsShapeburstFillSymbolLayer using the specified properties map containing symbol prope...
Qgis::RenderUnit outputUnit() const override
Returns the units to use for sizes and widths within the symbol layer.
QPointF offset() const
Returns the offset for the shapeburst fill.
bool useWholeShape() const
Returns whether the shapeburst fill is set to cover the entire shape.
bool ignoreRings() const
Returns whether the shapeburst fill is set to ignore polygon interior rings.
double maxDistance() const
Returns the maximum distance from the shape's boundary which is shaded.
Qgis::SymbolLayerFlags flags() const override
Returns flags which control the symbol layer's behavior.
QString layerType() const override
Returns a string that represents this layer type.
Qgis::GradientColorSource colorType() const
Returns the color mode used for the shapeburst fill.
double estimateMaxBleed(const QgsRenderContext &context) const override
Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when ...
void setColorRamp(QgsColorRamp *ramp)
Sets the color ramp used to draw the shapeburst fill.
Renders polygons using a single fill and stroke color.
QgsSimpleFillSymbolLayer(const QColor &color=DEFAULT_SIMPLEFILL_COLOR, Qt::BrushStyle style=DEFAULT_SIMPLEFILL_STYLE, const QColor &strokeColor=DEFAULT_SIMPLEFILL_BORDERCOLOR, Qt::PenStyle strokeStyle=DEFAULT_SIMPLEFILL_BORDERSTYLE, double strokeWidth=DEFAULT_SIMPLEFILL_BORDERWIDTH, Qt::PenJoinStyle penJoinStyle=DEFAULT_SIMPLEFILL_JOINSTYLE)
double dxfWidth(const QgsDxfExport &e, QgsSymbolRenderContext &context) const override
Gets line width.
Qt::PenJoinStyle penJoinStyle() const
QColor strokeColor() const override
Returns the stroke color for the symbol layer.
QColor dxfBrushColor(QgsSymbolRenderContext &context) const override
Gets brush/fill color.
bool usesMapUnits() const override
Returns true if the symbol layer has any components which use map unit based sizes.
Qt::BrushStyle dxfBrushStyle() const override
Gets brush/fill style.
QString ogrFeatureStyle(double mmScaleFactor, double mapUnitScaleFactor) const override
void startRender(QgsSymbolRenderContext &context) override
Called before a set of rendering operations commences on the supplied render context.
Qgis::SymbolLayerFlags flags() const override
Returns flags which control the symbol layer's behavior.
~QgsSimpleFillSymbolLayer() override
void toSld(QDomDocument &doc, QDomElement &element, const QVariantMap &props) const override
Saves the symbol layer as SLD.
double estimateMaxBleed(const QgsRenderContext &context) const override
Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when ...
QColor dxfColor(QgsSymbolRenderContext &context) const override
Gets color.
QColor fillColor() const override
Returns the fill color for the symbol layer.
Qt::PenStyle strokeStyle() const
QString layerType() const override
Returns a string that represents this layer type.
double dxfAngle(QgsSymbolRenderContext &context) const override
Gets angle.
void setOutputUnit(Qgis::RenderUnit unit) override
Sets the units to use for sizes and widths within the symbol layer.
QgsMapUnitScale mOffsetMapUnitScale
Qgis::RenderUnit mStrokeWidthUnit
void stopRender(QgsSymbolRenderContext &context) override
Called after a set of rendering operations has finished on the supplied render context.
QPointF offset() const
Returns the offset by which polygons will be translated during rendering.
Qt::PenStyle dxfPenStyle() const override
Gets pen style.
QgsMapUnitScale mStrokeWidthMapUnitScale
QImage toTiledPatternImage() const override
Renders the symbol layer as an image that can be used as a seamless pattern fill for polygons,...
void renderPolygon(const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context) override
Renders the fill symbol layer for the polygon whose outer ring is defined by points,...
QgsSimpleFillSymbolLayer * clone() const override
Shall be reimplemented by subclasses to create a deep copy of the instance.
QgsMapUnitScale mapUnitScale() const override
Qgis::RenderUnit outputUnit() const override
Returns the units to use for sizes and widths within the symbol layer.
void setMapUnitScale(const QgsMapUnitScale &scale) override
QVariantMap properties() const override
Should be reimplemented by subclasses to return a string map that contains the configuration informat...
static QgsSymbolLayer * create(const QVariantMap &properties=QVariantMap())
Creates a new QgsSimpleFillSymbolLayer using the specified properties map containing symbol propertie...
static QgsSymbolLayer * createFromSld(QDomElement &element)
The QgsSldExportContext class holds SLD export options and other information related to SLD export of...
QByteArray getImageData(const QString &path, bool blocking=false) const
Gets the SVG content corresponding to the given path.
QPicture svgAsPicture(const QString &path, double size, const QColor &fill, const QColor &stroke, double strokeWidth, double widthScaleFactor, bool forceVectorOutput=false, double fixedAspectRatio=0, bool blocking=false, const QMap< QString, QString > &parameters=QMap< QString, QString >())
Returns an SVG drawing as a QPicture.
void containsParams(const QString &path, bool &hasFillParam, QColor &defaultFillColor, bool &hasStrokeParam, QColor &defaultStrokeColor, bool &hasStrokeWidthParam, double &defaultStrokeWidth, bool blocking=false) const
Tests if an SVG file contains parameters for fill, stroke color, stroke width.
QImage svgAsImage(const QString &path, double size, const QColor &fill, const QColor &stroke, double strokeWidth, double widthScaleFactor, bool &fitsInCache, double fixedAspectRatio=0, bool blocking=false, const QMap< QString, QString > &parameters=QMap< QString, QString >())
Returns an SVG drawing as a QImage.
Contains utility functions for working with symbols and symbol layers.
static bool rotationFromSldElement(QDomElement &element, QString &rotationFunc)
static Qgis::MarkerClipMode decodeMarkerClipMode(const QString &string, bool *ok=nullptr)
Decodes a string representing a marker clip mode.
static QString encodePenStyle(Qt::PenStyle style)
static Qt::PenJoinStyle decodePenJoinStyle(const QString &str)
static QString encodeMapUnitScale(const QgsMapUnitScale &mapUnitScale)
static QgsStringMap evaluatePropertiesMap(const QMap< QString, QgsProperty > &propertiesMap, const QgsExpressionContext &context)
Evaluates a map of properties using the given context and returns a variant map with evaluated expres...
static bool displacementFromSldElement(QDomElement &element, QPointF &offset)
static QPointF polygonCentroid(const QPolygonF &points)
Calculate the centroid point of a QPolygonF.
static QString encodeBrushStyle(Qt::BrushStyle style)
static QString svgSymbolPathToName(const QString &path, const QgsPathResolver &pathResolver)
Determines an SVG symbol's name from its path.
static void externalGraphicToSld(QDomDocument &doc, QDomElement &element, const QString &path, const QString &mime, const QColor &color, double size=-1)
static QPointF polygonPointOnSurface(const QPolygonF &points, const QVector< QPolygonF > *rings=nullptr)
Calculate a point on the surface of a QPolygonF.
static QPointF toPoint(const QVariant &value, bool *ok=nullptr)
Converts a value to a point.
static void multiplyImageOpacity(QImage *image, qreal opacity)
Multiplies opacity of image pixel values with a (global) transparency value.
static QgsMapUnitScale decodeMapUnitScale(const QString &str)
static double rescaleUom(double size, Qgis::RenderUnit unit, const QVariantMap &props)
Rescales the given size based on the uomScale found in the props, if any is found,...
static QString ogrFeatureStylePen(double width, double mmScaleFactor, double mapUnitsScaleFactor, const QColor &c, Qt::PenJoinStyle joinStyle=Qt::MiterJoin, Qt::PenCapStyle capStyle=Qt::FlatCap, double offset=0.0, const QVector< qreal > *dashPattern=nullptr)
Create ogr feature style string for pen.
static bool externalGraphicFromSld(QDomElement &element, QString &path, QString &mime, QColor &color, double &size)
static void parametricSvgToSld(QDomDocument &doc, QDomElement &graphicElem, const QString &path, const QColor &fillColor, double size, const QColor &strokeColor, double strokeWidth)
Encodes a reference to a parametric SVG into SLD, as a succession of parametric SVG using URL paramet...
static bool lineFromSld(QDomElement &element, Qt::PenStyle &penStyle, QColor &color, double &width, Qt::PenJoinStyle *penJoinStyle=nullptr, Qt::PenCapStyle *penCapStyle=nullptr, QVector< qreal > *customDashPattern=nullptr, double *dashOffset=nullptr)
static QString ogrFeatureStyleBrush(const QColor &fillColr)
Create ogr feature style string for brush.
static QString encodeLineClipMode(Qgis::LineClipMode mode)
Encodes a line clip mode to a string.
static Qgis::LineClipMode decodeLineClipMode(const QString &string, bool *ok=nullptr)
Decodes a string representing a line clip mode.
static QPointF pointOnLineWithDistance(QPointF startPoint, QPointF directionPoint, double distance)
Returns a point on the line from startPoint to directionPoint that is a certain distance away from th...
static QSize tileSize(int width, int height, double &angleRad)
Calculate the minimum size in pixels of a symbol tile given the symbol width and height and the symbo...
static Qt::BrushStyle decodeBrushStyle(const QString &str)
static void lineToSld(QDomDocument &doc, QDomElement &element, Qt::PenStyle penStyle, const QColor &color, double width=-1, const Qt::PenJoinStyle *penJoinStyle=nullptr, const Qt::PenCapStyle *penCapStyle=nullptr, const QVector< qreal > *customDashPattern=nullptr, double dashOffset=0.0)
static QDomElement createVendorOptionElement(QDomDocument &doc, const QString &name, const QString &value)
static bool wellKnownMarkerFromSld(QDomElement &element, QString &name, QColor &color, QColor &strokeColor, Qt::PenStyle &strokeStyle, double &strokeWidth, double &size)
static void createDisplacementElement(QDomDocument &doc, QDomElement &element, QPointF offset)
static QString svgSymbolNameToPath(const QString &name, const QgsPathResolver &pathResolver)
Determines an SVG symbol's path from its name.
static QString encodeColor(const QColor &color)
static bool fillFromSld(QDomElement &element, Qt::BrushStyle &brushStyle, QColor &color)
static void fillToSld(QDomDocument &doc, QDomElement &element, Qt::BrushStyle brushStyle, const QColor &color=QColor())
static Qgis::RenderUnit decodeSldUom(const QString &str, double *scaleFactor=nullptr)
Decodes a SLD unit of measure string to a render unit.
static void createGeometryElement(QDomDocument &doc, QDomElement &element, const QString &geomFunc)
static double estimateMaxSymbolBleed(QgsSymbol *symbol, const QgsRenderContext &context)
Returns the maximum estimated bleed for the symbol.
static void wellKnownMarkerToSld(QDomDocument &doc, QDomElement &element, const QString &name, const QColor &color, const QColor &strokeColor, Qt::PenStyle strokeStyle, double strokeWidth=-1, double size=-1)
static Qt::PenStyle decodePenStyle(const QString &str)
static void createRotationElement(QDomDocument &doc, QDomElement &element, const QString &rotationFunc)
static Qgis::SymbolCoordinateReference decodeCoordinateReference(const QString &string, bool *ok=nullptr)
Decodes a string representing a symbol coordinate reference mode.
static QString encodePoint(QPointF point)
Encodes a QPointF to a string.
static QgsSymbolLayer * createMarkerLayerFromSld(QDomElement &element)
static QString encodePenJoinStyle(Qt::PenJoinStyle style)
static QgsStringMap getVendorOptionList(QDomElement &element)
static QPointF decodePoint(const QString &string)
Decodes a QSizeF from a string.
static QgsSymbolLayer * createLineLayerFromSld(QDomElement &element)
static QString encodeCoordinateReference(Qgis::SymbolCoordinateReference coordinateReference)
Encodes a symbol coordinate reference mode to a string.
static QString encodeMarkerClipMode(Qgis::MarkerClipMode mode)
Encodes a marker clip mode to a string.
virtual bool setSubSymbol(QgsSymbol *symbol)
Sets layer's subsymbol. takes ownership of the passed symbol.
bool shouldRenderUsingSelectionColor(const QgsSymbolRenderContext &context) const
Returns true if the symbol layer should be rendered using the selection color from the render context...
Qgis::SymbolType type() const
virtual QColor fillColor() const
Returns the fill color for the symbol layer.
static const bool SELECTION_IS_OPAQUE
Whether styles for selected features ignore symbol alpha.
bool installMasks(QgsRenderContext &context, bool recursive, const QRectF &rect=QRectF())
When rendering, install masks on context painter.
void removeMasks(QgsRenderContext &context, bool recursive)
When rendering, remove previously installed masks from context painter if recursive is true masks are...
virtual QSet< QString > usedAttributes(const QgsRenderContext &context) const
Returns the set of attributes referenced by the layer.
void copyDataDefinedProperties(QgsSymbolLayer *destLayer) const
Copies all data defined properties of this layer to another symbol layer.
@ GradientType
Gradient fill type.
@ SecondaryColor
Secondary color (eg for gradient fills)
@ File
Filename, eg for svg files.
@ GradientReference2Y
Gradient reference point 2 y.
@ GradientReference1X
Gradient reference point 1 x.
@ OffsetY
Vertical offset.
@ OffsetX
Horizontal offset.
@ GradientReference1Y
Gradient reference point 1 y.
@ PointCount
Point count.
@ GradientSpread
Gradient spread mode.
@ ShapeburstMaxDistance
Shapeburst fill from edge distance.
@ StrokeStyle
Stroke style (eg solid, dashed)
@ DistanceY
Vertical distance between points.
@ DensityArea
Density area.
@ ClipPoints
Whether markers should be clipped to polygon boundaries.
@ LineClipping
Line clipping mode.
@ ShapeburstIgnoreRings
Shapeburst ignore rings.
@ ShapeburstUseWholeShape
Shapeburst use whole shape.
@ DisplacementX
Horizontal displacement.
@ CoordinateMode
Gradient coordinate mode.
@ FillStyle
Fill style (eg solid, dots)
@ GradientReference2X
Gradient reference point 2 x.
@ StrokeColor
Stroke color.
@ BlurRadius
Shapeburst blur radius.
@ MarkerClipping
Marker clipping mode.
@ RandomSeed
Random number seed.
@ LineAngle
Line angle, or angle of hash lines for hash line symbols.
@ JoinStyle
Line join style.
@ RandomOffsetY
Random offset Y.
@ DisplacementY
Vertical displacement.
@ DistanceX
Horizontal distance between points.
@ GradientReference1IsCentroid
Gradient reference point 1 is centroid.
@ StrokeWidth
Stroke width.
@ GradientReference2IsCentroid
Gradient reference point 2 is centroid.
@ LineDistance
Distance between lines, or length of lines for hash line symbols.
@ Offset
Symbol offset.
@ RandomOffsetX
Random offset X.
@ Height
Symbol height.
virtual double estimateMaxBleed(const QgsRenderContext &context) const
Returns the estimated maximum distance which the layer style will bleed outside the drawn shape when ...
static const bool SELECT_FILL_BORDER
Whether fill styles for selected features also highlight symbol stroke.
virtual QString layerType() const =0
Returns a string that represents this layer type.
virtual QColor color() const
Returns the "representative" color of the symbol layer.
virtual QColor strokeColor() const
Returns the stroke color for the symbol layer.
void copyPaintEffect(QgsSymbolLayer *destLayer) const
Copies paint effect of this layer to another symbol layer.
virtual Qgis::SymbolLayerFlags flags() const
Returns flags which control the symbol layer's behavior.
QgsPropertyCollection mDataDefinedProperties
QgsPropertyCollection & dataDefinedProperties()
Returns a reference to the symbol layer's property collection, used for data defined overrides.
static const bool SELECT_FILL_STYLE
Whether fill styles for selected features uses symbol layer style.
virtual bool hasDataDefinedProperties() const
Returns true if the symbol layer (or any of its sub-symbols) contains data defined properties.
const QgsFeature * feature() const
Returns the current feature being rendered.
QgsFields fields() const
Fields of the layer.
void setOriginalValueVariable(const QVariant &value)
Sets the original value variable value for data defined symbology.
bool forceVectorRendering() const
Returns true if symbol must be rendered using vector methods, and optimisations like pre-rendered ima...
qreal opacity() const
Returns the opacity for the symbol.
QgsRenderContext & renderContext()
Returns a reference to the context's render context.
Abstract base class for all rendered symbols.
Definition qgssymbol.h:231
QColor color() const
Returns the symbol's color.
Qgis::SymbolType type() const
Returns the symbol's type.
Definition qgssymbol.h:293
double interval() const
Returns the interval between individual symbols.
const QgsMapUnitScale & intervalMapUnitScale() const
Returns the map unit scale for the interval between symbols.
void setInterval(double interval)
Sets the interval between individual symbols.
Qgis::RenderUnit intervalUnit() const
Returns the units for the interval between symbols.
static Q_INVOKABLE Qgis::RenderUnit decodeRenderUnit(const QString &string, bool *ok=nullptr)
Decodes a render unit from a string.
static Q_INVOKABLE QString encodeUnit(Qgis::DistanceUnit unit)
Encodes a distance unit to a string.
static bool isNull(const QVariant &variant, bool silenceNullWarnings=false)
Returns true if the specified variant should be considered a NULL value.
As part of the API refactoring and improvements which landed in the Processing API was substantially reworked from the x version This was done in order to allow much of the underlying Processing framework to be ported into c
QString qgsDoubleToString(double a, int precision=17)
Returns a string representation of a double.
Definition qgis.h:5834
bool qgsDoubleNear(double a, double b, double epsilon=4 *std::numeric_limits< double >::epsilon())
Compare two doubles (but allow some difference)
Definition qgis.h:5917
QMap< QString, QString > QgsStringMap
Definition qgis.h:6455
#define DEFAULT_SIMPLEFILL_JOINSTYLE
#define INF
#define DEFAULT_SIMPLEFILL_COLOR
#define DEFAULT_SIMPLEFILL_STYLE
#define DEFAULT_SIMPLEFILL_BORDERSTYLE
#define DEFAULT_SIMPLEFILL_BORDERCOLOR
#define DEFAULT_SIMPLEFILL_BORDERWIDTH
QList< QgsSymbolLayer * > QgsSymbolLayerList
Definition qgssymbol.h:30
Single variable definition for use within a QgsExpressionContextScope.