20#include <QSvgGenerator>
76 : mEnabled( other.mEnabled )
77 , mSize( other.mSize )
78 , mSizeUnit( other.mSizeUnit )
79 , mSizeMapUnitScale( other.mSizeMapUnitScale )
80 , mJoinStyle( other.mJoinStyle )
81 , mFillSymbol( other.mFillSymbol ? other.mFillSymbol->clone() : nullptr )
88 mEnabled = other.mEnabled;
90 mSizeUnit = other.mSizeUnit;
91 mSizeMapUnitScale = other.mSizeMapUnitScale;
92 mJoinStyle = other.mJoinStyle;
93 mFillSymbol.reset( other.mFillSymbol ? other.mFillSymbol->clone() : nullptr );
99 return mFillSymbol.get();
104 mFillSymbol.reset( symbol );
111 QDomElement symbolBufferElem = element.ownerDocument().createElement( QStringLiteral(
"buffer" ) );
112 symbolBufferElem.setAttribute( QStringLiteral(
"enabled" ), mEnabled );
113 symbolBufferElem.setAttribute( QStringLiteral(
"size" ), mSize );
116 symbolBufferElem.setAttribute( QStringLiteral(
"joinStyle" ),
static_cast< unsigned int >( mJoinStyle ) );
120 QDomDocument document = element.ownerDocument();
122 symbolBufferElem.appendChild( fillElem );
125 element.appendChild( symbolBufferElem );
130 const QDomElement symbolBufferElem = element.firstChildElement( QStringLiteral(
"buffer" ) );
131 mEnabled = symbolBufferElem.attribute( QStringLiteral(
"enabled" ), QStringLiteral(
"0" ) ).toInt();
132 mSize = symbolBufferElem.attribute( QStringLiteral(
"size" ), QStringLiteral(
"1" ) ).toDouble();
135 mJoinStyle =
static_cast< Qt::PenJoinStyle
>( symbolBufferElem.attribute( QStringLiteral(
"joinStyle" ), QString::number( Qt::RoundJoin ) ).toUInt() );
137 const QDomElement fillSymbolElem = symbolBufferElem.firstChildElement( QStringLiteral(
"symbol" ) );
138 if ( !fillSymbolElem.isNull() )
140 mFillSymbol.reset( QgsSymbolLayerUtils::loadSymbol<QgsFillSymbol>( fillSymbolElem, context ) );
160 for (
int i = 0; i <
mLayers.count(); i++ )
166 else if ( !
mLayers.at( i )->isCompatibleWithSymbol(
this ) )
178 return _getLineString3d( context, curve, clipToExtent );
180 return _getLineString2d( context, curve, clipToExtent );
185 const unsigned int nPoints = curve.
numPoints();
189 QVector< double > pointsX;
190 QVector< double > pointsY;
191 QVector< double > pointsZ;
197 const double cw = e.
width() / 10;
198 const double ch = e.
height() / 10;
202 std::unique_ptr< QgsLineString > segmentized;
203 if (
const QgsLineString *ls = qgsgeometry_cast< const QgsLineString * >( &curve ) )
209 segmentized.reset( qgsgeometry_cast< QgsLineString * >( curve.
segmentize( ) ) );
210 lineString = segmentized.get();
218 if (
const QgsLineString *ls = qgsgeometry_cast<const QgsLineString *>( &curve ) )
220 pointsX = ls->xVector();
221 pointsY = ls->yVector();
222 pointsZ = ls->zVector();
226 std::unique_ptr< QgsLineString > segmentized;
227 segmentized.reset( qgsgeometry_cast< QgsLineString * >( curve.
segmentize( ) ) );
229 pointsX = segmentized->xVector();
230 pointsY = segmentized->yVector();
231 pointsZ = segmentized->zVector();
236 const QVector< double > preTransformPointsZ = pointsZ;
237 bool wasTransformed =
false;
241 const int nVertices = pointsX.size();
242 wasTransformed =
true;
256 const int size = pointsX.size();
258 const double *xIn = pointsX.data();
259 const double *yIn = pointsY.data();
260 const double *zIn = pointsZ.data();
262 const double *preTransformZIn = wasTransformed ? preTransformPointsZ.constData() :
nullptr;
264 double *xOut = pointsX.data();
265 double *yOut = pointsY.data();
266 double *zOut = pointsZ.data();
268 for (
int i = 0; i < size; ++i )
270 bool pointOk = std::isfinite( *xIn ) && std::isfinite( *yIn );
277 pointOk &= !wasTransformed || std::isfinite( *zIn ) || !std::isfinite( *preTransformZIn );
293 if ( preTransformZIn )
296 pointsX.resize( outSize );
297 pointsY.resize( outSize );
298 pointsZ.resize( outSize );
305 const double cw = e.
width() / 10;
306 const double ch = e.
height() / 10;
309 QVector< double > tempX;
310 QVector< double > tempY;
311 QVector< double > tempZ;
318 const int polygonSize = pointsX.size();
319 QPolygonF out( polygonSize );
320 const double *x = pointsX.constData();
321 const double *y = pointsY.constData();
322 QPointF *dest = out.data();
323 for (
int i = 0; i < polygonSize; ++i )
325 double screenX = *x++;
326 double screenY = *y++;
328 *dest++ = QPointF( screenX, screenY );
336 const unsigned int nPoints = curve.
numPoints();
346 const double cw = e.
width() / 10;
347 const double ch = e.
height() / 10;
370 pts.erase( std::remove_if( pts.begin(), pts.end(),
371 [](
const QPointF point )
373 return !std::isfinite( point.x() ) || !std::isfinite( point.y() );
380 const double cw = e.
width() / 10;
381 const double ch = e.
height() / 10;
386 QPointF *ptr = pts.data();
387 for (
int i = 0; i < pts.size(); ++i, ++ptr )
399 return _getPolygonRing3d( context, curve, clipToExtent, isExteriorRing, correctRingOrientation );
401 return _getPolygonRing2d( context, curve, clipToExtent, isExteriorRing, correctRingOrientation );
404QPolygonF QgsSymbol::_getPolygonRing3d(
QgsRenderContext &context,
const QgsCurve &curve,
const bool clipToExtent,
const bool isExteriorRing,
const bool correctRingOrientation )
409 QVector< double > pointsX;
410 QVector< double > pointsY;
411 QVector< double > pointsZ;
416 bool reverseRing =
false;
417 if ( correctRingOrientation )
430 const double cw = e.
width() / 10;
431 const double ch = e.
height() / 10;
435 std::unique_ptr< QgsLineString > segmentized;
436 if (
const QgsLineString *ls = qgsgeometry_cast< const QgsLineString * >( &curve ) )
442 segmentized.reset( qgsgeometry_cast< QgsLineString * >( curve.
segmentize( ) ) );
443 lineString = segmentized.get();
446 pointsX = lineString->
xVector();
447 pointsY = lineString->
yVector();
448 pointsZ = lineString->
zVector();
455 if (
const QgsLineString *ls = qgsgeometry_cast<const QgsLineString *>( &curve ) )
457 pointsX = ls->xVector();
458 pointsY = ls->yVector();
459 pointsZ = ls->zVector();
463 std::unique_ptr< QgsLineString > segmentized;
464 segmentized.reset( qgsgeometry_cast< QgsLineString * >( curve.
segmentize( ) ) );
466 pointsX = segmentized->xVector();
467 pointsY = segmentized->yVector();
468 pointsZ = segmentized->zVector();
474 std::reverse( pointsX.begin(), pointsX.end() );
475 std::reverse( pointsY.begin(), pointsY.end() );
476 std::reverse( pointsZ.begin(), pointsZ.end() );
480 const QVector< double > preTransformPointsZ = pointsZ;
481 bool wasTransformed =
false;
484 const int nVertices = pointsX.size();
485 wasTransformed =
true;
498 const int size = pointsX.size();
500 const double *xIn = pointsX.data();
501 const double *yIn = pointsY.data();
502 const double *zIn = pointsZ.data();
504 const double *preTransformZIn = wasTransformed ? preTransformPointsZ.constData() :
nullptr;
506 double *xOut = pointsX.data();
507 double *yOut = pointsY.data();
508 double *zOut = pointsZ.data();
510 for (
int i = 0; i < size; ++i )
512 bool pointOk = std::isfinite( *xIn ) && std::isfinite( *yIn );
518 pointOk &= !wasTransformed || std::isfinite( *zIn ) || !std::isfinite( *preTransformZIn );
534 if ( preTransformZIn )
537 pointsX.resize( outSize );
538 pointsY.resize( outSize );
539 pointsZ.resize( outSize );
546 const double cw = e.
width() / 10;
547 const double ch = e.
height() / 10;
553 const int polygonSize = pointsX.size();
554 QPolygonF out( polygonSize );
555 const double *x = pointsX.constData();
556 const double *y = pointsY.constData();
557 QPointF *dest = out.data();
558 for (
int i = 0; i < polygonSize; ++i )
560 double screenX = *x++;
561 double screenY = *y++;
563 *dest++ = QPointF( screenX, screenY );
566 if ( !out.empty() && !out.isClosed() )
573QPolygonF QgsSymbol::_getPolygonRing2d(
QgsRenderContext &context,
const QgsCurve &curve,
const bool clipToExtent,
const bool isExteriorRing,
const bool correctRingOrientation )
583 if ( correctRingOrientation )
587 std::reverse( poly.begin(), poly.end() );
589 std::reverse( poly.begin(), poly.end() );
596 const double cw = e.
width() / 10;
597 const double ch = e.
height() / 10;
616 poly.erase( std::remove_if( poly.begin(), poly.end(),
617 [](
const QPointF point )
619 return !std::isfinite( point.x() ) || !std::isfinite( point.y() );
626 const double cw = e.
width() / 10;
627 const double ch = e.
height() / 10;
632 QPointF *ptr = poly.data();
633 for (
int i = 0; i < poly.size(); ++i, ++ptr )
638 if ( !poly.empty() && !poly.isClosed() )
639 poly << poly.at( 0 );
650 holes.reserve( ringCount );
651 for (
int idx = 0; idx < ringCount; idx++ )
654 if ( !hole.isEmpty() )
655 holes.append( hole );
664 return QObject::tr(
"Marker" );
666 return QObject::tr(
"Line" );
668 return QObject::tr(
"Fill" );
670 return QObject::tr(
"Hybrid" );
694 QgsSymbol::initPropertyDefinitions();
695 return sPropertyDefinitions;
711 QgsSymbolLayerList::const_iterator it =
mLayers.constBegin();
715 for ( ; it !=
mLayers.constEnd(); ++it )
717 if ( ( *it )->outputUnit() != unit )
734 if (
layer->usesMapUnits() )
749 QgsSymbolLayerList::const_iterator it =
mLayers.constBegin();
750 if ( it ==
mLayers.constEnd() )
756 for ( ; it !=
mLayers.constEnd(); ++it )
758 if ( ( *it )->mapUnitScale() != scale )
768 const auto constMLayers =
mLayers;
771 layer->setOutputUnit( u );
777 const auto constMLayers =
mLayers;
780 layer->setMapUnitScale( scale );
818 std::unique_ptr< QgsSymbol > s;
842 s = std::make_unique< QgsMarkerSymbol >();
845 s = std::make_unique< QgsLineSymbol >();
848 s = std::make_unique< QgsFillSymbol >();
851 QgsDebugError( QStringLiteral(
"unknown layer's geometry type" ) );
869 if ( s->color().spec() == QColor::Spec::Rgb && isCmyk )
871 s->setColor( s->color().toCmyk() );
873 else if ( s->color().spec() == QColor::Spec::Cmyk && !isCmyk )
875 s->setColor( s->color().toRgb() );
893 if ( index < 0 || index >
mLayers.count() )
896 if ( !
layer || !
layer->isCompatibleWithSymbol(
this ) )
906 if ( !
layer || !
layer->isCompatibleWithSymbol(
this ) )
916 if ( index < 0 || index >=
mLayers.count() )
927 if ( index < 0 || index >=
mLayers.count() )
930 return mLayers.takeAt( index );
938 if ( oldLayer ==
layer )
941 if ( !
layer || !
layer->isCompatibleWithSymbol(
this ) )
952 Q_ASSERT_X( !mStarted,
"startRender",
"Rendering has already been started for this symbol instance!" );
967 const long long mapFrameNumber = context.
currentFrame();
968 double animationTimeSeconds = 0;
969 if ( mapFrameNumber >= 0 && context.
frameRate() > 0 )
972 animationTimeSeconds = mapFrameNumber / context.
frameRate();
977 animationTimeSeconds = QDateTime::currentMSecsSinceEpoch() / 1000.0;
981 scope->setVariable( QStringLiteral(
"symbol_frame" ), symbolFrame, true );
984 mSymbolRenderContext->setExpressionContextScope( scope.release() );
998 layer->prepareExpressions( symbolContext );
1016 layer->prepareMasks( symbolContext );
1017 layer->startRender( symbolContext );
1023 Q_ASSERT_X( mStarted,
"startRender",
"startRender was not called for this symbol instance!" );
1027 if ( mSymbolRenderContext )
1029 const auto constMLayers =
mLayers;
1035 layer->stopRender( *mSymbolRenderContext );
1044 mSymbolRenderContext.reset(
nullptr );
1053 const auto constMLayers =
mLayers;
1056 if ( !
layer->isLocked() )
1066 if ( !
layer->isLocked() )
1068 const QColor layerColor =
layer->color();
1069 if ( layerColor.isValid() )
1073 return QColor( 0, 0, 0 );
1079 std::unique_ptr< QgsRenderContext > tempContext;
1083 context = tempContext.get();
1118 if ( !customContext && expressionContext )
1122 else if ( !customContext )
1133 QPainter *originalTargetPainter =
nullptr;
1135 std::unique_ptr< QPicture > pictureForDeferredRendering;
1136 std::unique_ptr< QPainter > deferredRenderingPainter;
1139 originalTargetPainter = context->
painter();
1140 pictureForDeferredRendering = std::make_unique< QPicture >();
1141 deferredRenderingPainter = std::make_unique< QPainter >( pictureForDeferredRendering.get() );
1142 context->
setPainter( deferredRenderingPainter.get() );
1161 const QSizeF targetSize = QSizeF( size.width() - 1, size.height() - 1 );
1169 std::unique_ptr< QgsEffectPainter > effectPainter;
1170 if ( effect && effect->
enabled() )
1171 effectPainter = std::make_unique< QgsEffectPainter >( symbolContext.
renderContext(), effect );
1173 for (
const QList< QPolygonF > &poly : polys )
1175 QVector< QPolygonF > rings;
1176 rings.reserve( poly.size() );
1177 for (
int i = 1; i < poly.size(); ++i )
1178 rings << poly.at( i );
1182 effectPainter.reset();
1187 layer->drawPreviewIcon( symbolContext, size );
1193 deferredRenderingPainter->end();
1194 deferredRenderingPainter.reset();
1197 QPainter geometryPainter( &geometryPaintDevice );
1199 geometryPainter.end();
1204 context->
setPainter( originalTargetPainter );
1212 case Qt::SvgMiterJoin:
1222 case Qt::MPenJoinStyle:
1230 for (
const QList< QPolygonF > &polygon : polygons )
1232 QVector< QPolygonF > rings;
1233 for (
int i = 1; i < polygon.size(); ++i )
1234 rings << polygon.at( i );
1235 mBufferSettings->fillSymbol()->renderPolygon( polygon.value( 0 ), &rings,
nullptr, *context );
1248 if ( format.compare( QLatin1String(
"svg" ), Qt::CaseInsensitive ) == 0 )
1250 QSvgGenerator generator;
1251 generator.setFileName( path );
1252 generator.setSize( size );
1253 generator.setViewBox( QRect( 0, 0, size.height(), size.height() ) );
1255 QPainter painter( &generator );
1261 QImage image =
asImage( size );
1268 QImage image( size, QImage::Format_ARGB32_Premultiplied );
1271 QPainter p( &image );
1272 p.setRenderHint( QPainter::Antialiasing );
1273 p.setRenderHint( QPainter::SmoothPixmapTransform );
1284 QImage preview( QSize( 100, 100 ) * devicePixelRatio, QImage::Format_ARGB32_Premultiplied );
1286 preview.setDevicePixelRatio( devicePixelRatio );
1288 QPainter p( &preview );
1289 p.setRenderHint( QPainter::Antialiasing );
1290 p.translate( 0.5, 0.5 );
1294 p.setPen( QPen( Qt::gray ) );
1295 p.drawLine( QLineF( 0, 50, 100, 50 ) );
1296 p.drawLine( QLineF( 50, 0, 50, 100 ) );
1310 if ( expressionContext )
1319 poly << QPointF( 0, 50 ) << QPointF( 99, 50 );
1320 static_cast<QgsLineSymbol *
>( this )->renderPolyline( poly,
nullptr, context );
1325 polygon << QPointF( 20, 20 ) << QPointF( 80, 20 ) << QPointF( 80, 80 ) << QPointF( 20, 80 ) << QPointF( 20, 20 );
1326 static_cast<QgsFillSymbol *
>( this )->renderPolygon( polygon,
nullptr,
nullptr, context );
1330 static_cast<QgsMarkerSymbol *
>( this )->renderPoint( QPointF( 50, 50 ),
nullptr, context );
1348 t = QStringLiteral(
"MARKER" );
1351 t = QStringLiteral(
"LINE" );
1354 t = QStringLiteral(
"FILL" );
1357 Q_ASSERT(
false &&
"unknown symbol type" );
1361 for ( QgsSymbolLayerList::const_iterator it =
mLayers.begin(); it !=
mLayers.end(); ++it )
1370 props[ QStringLiteral(
"alpha" )] = QString::number(
opacity() );
1371 double scaleFactor = 1.0;
1375 for ( QgsSymbolLayerList::const_iterator it =
mLayers.begin(); it !=
mLayers.end(); ++it )
1377 ( *it )->toSld( doc, element, props );
1384 for ( QgsSymbolLayerList::const_iterator it =
mLayers.begin(); it !=
mLayers.end(); ++it )
1387 layer->setLocked( ( *it )->isLocked() );
1388 layer->setRenderingPass( ( *it )->renderingPass() );
1389 layer->setEnabled( ( *it )->enabled() );
1391 layer->setUserFlags( ( *it )->userFlags() );
1392 lst.append(
layer );
1407 if ( effect && effect->
enabled() )
1410 generatorLayer->
render( context, geometryType, points, rings );
1414 generatorLayer->
render( context, geometryType, points, rings );
1424 QgsSymbolLayerList::const_iterator sIt =
mLayers.constBegin();
1425 for ( ; sIt !=
mLayers.constEnd(); ++sIt )
1429 attributes.unite( ( *sIt )->usedAttributes( context ) );
1434 attributes.unite(
mBufferSettings->fillSymbol()->usedAttributes( context ) );
1441 mDataDefinedProperties.
setProperty( key, property );
1451 if (
layer->hasDataDefinedProperties() )
1461 if (
layer->canCauseArtifactsBetweenAdjacentTiles() )
1486class ExpressionContextScopePopper
1490 ExpressionContextScopePopper() =
default;
1492 ~ExpressionContextScopePopper()
1495 context->popScope();
1504class GeometryRestorer
1508 : mContext( context ),
1509 mGeometry( context.geometry() )
1514 mContext.setGeometry( mGeometry );
1534 GeometryRestorer geomRestorer( context );
1536 bool usingSegmentizedGeometry =
false;
1544 if ( std::isfinite( boundsOrigin.x() ) && std::isfinite( boundsOrigin.y() ) )
1559 clippingEnabled =
false;
1571 clippingEnabled =
false;
1575 clippingEnabled =
false;
1578 mSymbolRenderContext->setGeometryPartNum( 1 );
1581 ExpressionContextScopePopper scopePopper;
1582 if ( mSymbolRenderContext->expressionContextScope() )
1584 if ( needsExpressionContext )
1610 QPointF renderPoint;
1611 const QgsPoint *originalGeometry =
nullptr;
1613 QVector< PointInfo > pointsToRender;
1617 QPolygonF renderLine;
1618 const QgsCurve *originalGeometry =
nullptr;
1620 QVector< LineInfo > linesToRender;
1624 QPolygonF renderExterior;
1625 QVector< QPolygonF > renderRings;
1627 int originalPartIndex = 0;
1629 QVector< PolygonInfo > polygonsToRender;
1632 getPartGeometry = [&pointsToRender, &linesToRender, &polygonsToRender, &getPartGeometry, &context, &clippingEnabled, &markers, &feature, &usingSegmentizedGeometry,
this](
const QgsAbstractGeometry * part,
int partIndex = 0 )
1643 const bool isMultiPart = qgsgeometry_cast< const QgsGeometryCollection * >( part ) && qgsgeometry_cast< const QgsGeometryCollection * >( part )->numGeometries() > 1;
1649 if ( needsSegmentizing )
1652 if ( !segmentizedPart )
1656 temporaryGeometryContainer.
set( segmentizedPart.release() );
1657 processedGeometry = temporaryGeometryContainer.
constGet();
1658 usingSegmentizedGeometry =
true;
1663 processedGeometry = part;
1673 std::unique_ptr< QgsAbstractGeometry > simplified( simplifier.
simplify( processedGeometry ) );
1676 temporaryGeometryContainer.
set( simplified.release() );
1677 processedGeometry = temporaryGeometryContainer.
constGet();
1692 temporaryGeometryContainer.
set( clippedGeom.release() );
1693 processedGeometry = temporaryGeometryContainer.
constGet();
1700 processedGeometry = part;
1703 if ( !processedGeometry )
1706 QgsDebugError( QStringLiteral(
"No processed geometry to render for part!" ) );
1716 QgsDebugMsgLevel( QStringLiteral(
"point can be drawn only with marker symbol!" ), 2 );
1721 info.originalGeometry = qgsgeometry_cast< const QgsPoint * >( part );
1722 info.renderPoint =
_getPoint( context, *info.originalGeometry );
1723 pointsToRender << info;
1731 QgsDebugMsgLevel( QStringLiteral(
"linestring can be drawn only with line symbol!" ), 2 );
1736 info.originalGeometry = qgsgeometry_cast<const QgsCurve *>( part );
1737 info.renderLine =
_getLineString( context, *qgsgeometry_cast<const QgsCurve *>( processedGeometry ), clippingEnabled );
1738 linesToRender << info;
1748 QgsDebugMsgLevel( QStringLiteral(
"polygon can be drawn only with fill symbol!" ), 2 );
1753 info.originalGeometry = qgsgeometry_cast<const QgsCurvePolygon *>( part );
1754 info.originalPartIndex = partIndex;
1755 if ( !qgsgeometry_cast<const QgsPolygon *>( processedGeometry )->exteriorRing() )
1757 QgsDebugError( QStringLiteral(
"cannot render polygon with no exterior ring" ) );
1761 _getPolygon( info.renderExterior, info.renderRings, context, *qgsgeometry_cast<const QgsPolygon *>( processedGeometry ), clippingEnabled,
mForceRHR );
1762 polygonsToRender << info;
1768 const QgsMultiPoint *mp = qgsgeometry_cast< const QgsMultiPoint * >( processedGeometry );
1776 const QgsGeometryCollection *geomCollection = qgsgeometry_cast<const QgsGeometryCollection *>( processedGeometry );
1779 for (
unsigned int i = 0; i < num; ++i )
1784 getPartGeometry( geomCollection->
geometryN( i ), i );
1794 QgsDebugMsgLevel( QStringLiteral(
"multi-polygon can be drawn only with fill symbol!" ), 2 );
1805 std::map<double, QList<unsigned int> > thisAreaToPartNum;
1806 for (
unsigned int i = 0; i < num; ++i )
1815 std::map<double, QList<unsigned int> >::const_reverse_iterator iter = thisAreaToPartNum.rbegin();
1816 for ( ; iter != thisAreaToPartNum.rend(); ++iter )
1818 const QList<unsigned int> &listPartIndex = iter->second;
1819 for (
int idx = 0; idx < listPartIndex.size(); ++idx )
1821 const unsigned i = listPartIndex[idx];
1822 getPartGeometry( geomCollection->
geometryN( i ), i );
1831 const QgsPolyhedralSurface *polySurface = qgsgeometry_cast<const QgsPolyhedralSurface *>( processedGeometry );
1834 for (
int i = 0; i < num; ++i )
1839 getPartGeometry( polySurface->
patchN( i ), i );
1845 QgsDebugError( QStringLiteral(
"feature %1: unsupported wkb type %2/%3 for rendering" )
1846 .arg( feature.
id() )
1848 .arg(
static_cast< quint32
>( part->wkbType() ), 0, 16 ) );
1861 std::vector< int > allLayers;
1862 allLayers.reserve(
mLayers.count() );
1863 for (
int i = 0; i <
mLayers.count(); ++i )
1864 allLayers.emplace_back( i );
1866 std::vector< int > layerToRender;
1869 layerToRender = allLayers;
1876 layerToRender = allLayers;
1878 layerToRender.emplace_back(
layer );
1883 if ( needsExpressionContext )
1891 QPainter *originalTargetPainter =
nullptr;
1893 std::vector< QPicture > picturesForDeferredRendering;
1894 std::unique_ptr< QPainter > deferredRenderingPainter;
1897 originalTargetPainter = context.
painter();
1898 picturesForDeferredRendering.emplace_back( QPicture() );
1899 deferredRenderingPainter = std::make_unique< QPainter >( &picturesForDeferredRendering.front() );
1900 context.
setPainter( deferredRenderingPainter.get() );
1907 for (
const int symbolLayerIndex : layerToRender )
1909 if ( deferredRenderingPainter &&
layer != -1 && symbolLayerIndex != layerToRender.front() )
1913 deferredRenderingPainter->end();
1914 picturesForDeferredRendering.emplace_back( QPicture() );
1915 deferredRenderingPainter->begin( &picturesForDeferredRendering.back() );
1922 if ( needsExpressionContext )
1928 const bool hasClipGeometries = !maskGeometriesDisabledForSymbol
1931 QPainter *previousPainter =
nullptr;
1932 std::unique_ptr< QPicture > renderedPicture;
1933 std::unique_ptr< QPainter > picturePainter;
1934 if ( hasClipGeometries )
1936 previousPainter = context.
painter();
1937 renderedPicture = std::make_unique< QPicture >();
1938 picturePainter = std::make_unique< QPainter >( renderedPicture.get() );
1948 int geometryPartNumber = 0;
1949 for (
const PointInfo &point : std::as_const( pointsToRender ) )
1954 mSymbolRenderContext->setGeometryPartNum( geometryPartNumber + 1 );
1955 if ( needsExpressionContext )
1958 static_cast<QgsMarkerSymbol *
>( this )->renderPoint( point.renderPoint, &feature, context, symbolLayerIndex, selected );
1959 geometryPartNumber++;
1967 if ( linesToRender.empty() )
1970 int geometryPartNumber = 0;
1971 for (
const LineInfo &line : std::as_const( linesToRender ) )
1976 mSymbolRenderContext->setGeometryPartNum( geometryPartNumber + 1 );
1977 if ( needsExpressionContext )
1981 static_cast<QgsLineSymbol *
>( this )->renderPolyline( line.renderLine, &feature, context, symbolLayerIndex, selected );
1982 geometryPartNumber++;
1989 for (
const PolygonInfo &info : std::as_const( polygonsToRender ) )
1994 mSymbolRenderContext->setGeometryPartNum( info.originalPartIndex + 1 );
1995 if ( needsExpressionContext )
1999 static_cast<QgsFillSymbol *
>( this )->renderPolygon( info.renderExterior, ( !info.renderRings.isEmpty() ? &info.renderRings : nullptr ), &feature, context, symbolLayerIndex, selected );
2011 if ( hasClipGeometries )
2015 picturePainter->end();
2016 picturePainter.reset();
2019 QRectF maximalBounds = renderedPicture->boundingRect();
2020 constexpr double BOUNDS_MARGIN = 0.05;
2021 maximalBounds.adjust( -maximalBounds.width() * BOUNDS_MARGIN, -maximalBounds.height() * BOUNDS_MARGIN, maximalBounds.width() * BOUNDS_MARGIN, maximalBounds.height() * BOUNDS_MARGIN );
2023 const bool hadClipping = context.
painter()->hasClipping();
2024 const QPainterPath oldClipPath = hadClipping ? context.
painter()->clipPath() : QPainterPath();
2028 context.
painter()->drawPicture( QPointF( 0, 0 ), *renderedPicture );
2032 context.
painter()->setClipPath( oldClipPath );
2033 context.
painter()->setClipping( hadClipping );
2041 deferredRenderingPainter->end();
2042 deferredRenderingPainter.reset();
2045 QPainter geometryPainter( &geometryPaintDevice );
2048 for (
const auto &deferredPicture : picturesForDeferredRendering )
2052 geometryPainter.end();
2065 case Qt::SvgMiterJoin:
2075 case Qt::MPenJoinStyle:
2081 for (
const QList< QPolygonF > &polygon : polygons )
2083 QVector< QPolygonF > rings;
2084 for (
int i = 1; i < polygon.size(); ++i )
2085 rings << polygon.at( i );
2086 mBufferSettings->fillSymbol()->renderPolygon( polygon.value( 0 ), &rings,
nullptr, context );
2099 markers.reserve( pointsToRender.size() );
2100 for (
const PointInfo &info : std::as_const( pointsToRender ) )
2104 const QRectF bounds =
static_cast<QgsMarkerSymbol *
>( this )->bounds( info.renderPoint, context, feature );
2113 context.
painter()->setPen( Qt::red );
2114 context.
painter()->setBrush( QColor( 255, 0, 0, 100 ) );
2115 context.
painter()->drawRect( bounds );
2119 if ( drawVertexMarker && !usingSegmentizedGeometry )
2121 markers.append( info.renderPoint );
2129 for (
const LineInfo &info : std::as_const( linesToRender ) )
2137 if ( drawVertexMarker && !usingSegmentizedGeometry )
2139 markers << info.renderLine;
2147 for (
const PolygonInfo &info : std::as_const( polygonsToRender ) )
2156 if ( drawVertexMarker && !usingSegmentizedGeometry )
2158 markers << info.renderExterior;
2160 for (
const QPolygonF &hole : info.renderRings )
2180 handler->handleRenderedFeature( feature, renderedBoundsGeom, featureContext );
2183 if ( drawVertexMarker )
2187 const auto constMarkers = markers;
2188 for ( QPointF marker : constMarkers )
2190 renderVertexMarker( marker, context, currentVertexMarkerType, currentVertexMarkerSize );
2205 x = vertexPoint.
x();
2206 y = vertexPoint.
y();
2215 renderVertexMarker( mapPoint, context, currentVertexMarkerType, currentVertexMarkerSize );
2223 return mSymbolRenderContext.get();
2232void QgsSymbol::initPropertyDefinitions()
2234 if ( !sPropertyDefinitions.isEmpty() )
2237 QString origin = QStringLiteral(
"symbol" );
2258 const QList< QgsSymbolLayer * > layers =
mLayers;
2282 const QList< QgsSymbolLayer * > layers =
mLayers;
2298 mDataDefinedProperties = other->mDataDefinedProperties;
@ CounterClockwise
Counter-clockwise direction.
@ Clockwise
Clockwise direction.
@ ExcludeSymbolBuffers
Do not render symbol buffers.
@ IsSymbolLayerSubSymbol
Symbol is being rendered as a sub-symbol of a QgsSymbolLayer.
@ ForceVectorRendering
Symbol must be rendered using vector methods, and optimisations like pre-rendered images must be disa...
@ DisableFeatureClipping
If present, indicates that features should never be clipped to the map extent during rendering.
@ AffectsLabeling
If present, indicates that the symbol layer will participate in the map labeling problem.
@ CanCalculateMaskGeometryPerFeature
If present, indicates that mask geometry can safely be calculated per feature for the symbol layer....
QFlags< SymbolPreviewFlag > SymbolPreviewFlags
Symbol preview flags.
GeometryType
The geometry types are used to group Qgis::WkbType in a coarse way.
JoinStyle
Join styles for buffers.
@ Bevel
Use beveled joins.
@ Round
Use rounded joins.
@ Miter
Use mitered joins.
RenderUnit
Rendering size units.
@ Millimeters
Millimeters.
@ Unknown
Mixed or unknown units.
@ DisableSymbolClippingToExtent
Force symbol clipping to map extent to be disabled in all situations. This will result in slower rend...
@ RenderSymbolPreview
The render is for a symbol preview only and map based properties may not be available,...
@ ApplyClipAfterReprojection
Feature geometry clipping to mapExtent() must be performed after the geometries are transformed using...
@ DrawSymbolBounds
Draw bounds of symbols (for debugging/testing)
@ RenderMapTile
Draw map such that there are no problems between adjacent tiles.
@ AlwaysUseGlobalMasks
When applying clipping paths for selective masking, always use global ("entire map") paths,...
@ Antialiasing
Use antialiasing while drawing.
@ HighQualityImageTransforms
Enable high quality image transformations, which results in better appearance of scaled or rotated ra...
@ FlagIncludeCrosshairsForMarkerSymbols
Include a crosshairs reference image in the background of marker symbol previews.
VertexMarkerType
Editing vertex markers, used for showing vertices during a edit operation.
QFlags< SymbolRenderHint > SymbolRenderHints
Symbol render hints.
QFlags< SymbolFlag > SymbolFlags
Symbol flags.
@ AffectsLabeling
If present, indicates that the symbol will participate in the map labeling problem.
@ MultiPolygon
MultiPolygon.
@ MultiLineString
MultiLineString.
@ GeometryCollection
GeometryCollection.
@ PolyhedralSurface
PolyhedralSurface.
@ MultiSurface
MultiSurface.
@ Forward
Forward transform (from source to destination)
Abstract base class for all geometries.
virtual const QgsAbstractGeometry * simplifiedTypeRef() const
Returns a reference to the simplest lossless representation of this geometry, e.g.
virtual QgsRectangle boundingBox() const
Returns the minimal bounding box for the geometry.
bool is3D() const
Returns true if the geometry is 3D and contains a z-value.
Qgis::WkbType wkbType() const
Returns the WKB type of the geometry.
virtual int partCount() const =0
Returns count of parts contained in the geometry.
virtual bool hasCurvedSegments() const
Returns true if the geometry contains curved segments.
virtual bool nextVertex(QgsVertexId &id, QgsPoint &vertex) const =0
Returns next vertex id and coordinates.
virtual QgsAbstractGeometry * clone() const =0
Clones the geometry by performing a deep copy.
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.
static QgsColorSchemeRegistry * colorSchemeRegistry()
Returns the application's color scheme registry, used for managing color schemes.
A 3-dimensional box composed of x, y, z coordinates.
static void trimPolygon(QPolygonF &pts, const QgsRectangle &clipRect)
Trims the given polygon to a rectangular box, by modifying the given polygon in place.
static QPolygonF clippedLine(const QgsCurve &curve, const QgsRectangle &clipExtent)
Takes a linestring and clips it to clipExtent.
static void clipped3dLine(const QVector< double > &xIn, const QVector< double > &yIn, const QVector< double > &zIn, QVector< double > &x, QVector< double > &y, QVector< double > &z, const QgsBox3D &clipExtent)
Takes a line with 3D coordinates and clips it to clipExtent.
static QString colorToString(const QColor &color)
Encodes a color into a string value.
Custom exception class for Coordinate Reference System related exceptions.
Curve polygon geometry type.
int numInteriorRings() const
Returns the number of interior rings contained with the curve polygon.
const QgsCurve * exteriorRing() const
Returns the curve polygon's exterior ring.
const QgsCurve * interiorRing(int i) const
Retrieves an interior ring from the curve polygon.
Abstract base class for curved geometry type.
Qgis::AngularDirection orientation() const
Returns the curve's orientation, e.g.
virtual int numPoints() const =0
Returns the number of points in the curve.
QgsCurve * segmentize(double tolerance=M_PI_2/90, SegmentationToleranceType toleranceType=MaximumAngle) const override
Returns a geometry without curves.
virtual QPolygonF asQPolygonF() const
Returns a QPolygonF representing the points.
A class to manager painter saving and restoring required for effect drawing.
Single scope for storing variables and functions for use within a QgsExpressionContext.
static QgsExpressionContextScope * updateSymbolScope(const QgsSymbol *symbol, QgsExpressionContextScope *symbolScope=nullptr)
Updates a symbol scope related to a QgsSymbol to an expression context.
static QList< QgsExpressionContextScope * > globalProjectLayerScopes(const QgsMapLayer *layer)
Creates a list of three scopes: global, layer's project and layer.
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
static const QString EXPR_GEOMETRY_PART_COUNT
Inbuilt variable name for geometry part count variable.
static const QString EXPR_GEOMETRY_PART_NUM
Inbuilt variable name for geometry part number variable.
void appendScope(QgsExpressionContextScope *scope)
Appends a scope to the end of the context.
void appendScopes(const QList< QgsExpressionContextScope * > &scopes)
Appends a list of scopes to the end of the context.
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Container of fields for a vector layer.
A fill symbol type, for rendering Polygon and MultiPolygon geometries.
int numGeometries() const
Returns the number of geometries within the collection.
const QgsAbstractGeometry * geometryN(int n) const
Returns a const reference to a geometry from within the collection.
A symbol layer subclass which alters rendered feature shapes through the use of QGIS expressions.
void render(QgsSymbolRenderContext &context, Qgis::GeometryType geometryType=Qgis::GeometryType::Unknown, const QPolygonF *points=nullptr, const QVector< QPolygonF > *rings=nullptr)
Will render this symbol layer using the context.
A paint device which converts everything renderer to a QgsGeometry representation of the rendered sha...
const QgsAbstractGeometry & geometry() const
Returns the rendered geometry.
A geometry is the spatial representation of a feature.
static QgsGeometry fromRect(const QgsRectangle &rect)
Creates a new geometry from a QgsRectangle.
static QgsGeometry collectGeometry(const QVector< QgsGeometry > &geometries)
Creates a new multipart geometry from a list of QgsGeometry objects.
static QgsGeometry fromQPolygonF(const QPolygonF &polygon)
Construct geometry from a QPolygonF.
const QgsAbstractGeometry * constGet() const
Returns a non-modifiable (const) reference to the underlying abstract geometry primitive.
void set(QgsAbstractGeometry *geometry)
Sets the underlying geometry store.
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...
bool isEmpty() const
Returns true if the geometry is empty (eg a linestring with no vertices, or a collection with no geom...
QgsRectangle boundingBox() const
Returns the bounding box of the geometry.
Does vector analysis using the geos library and handles import, export, exception handling*.
Represents a patch shape for use in map legends.
QList< QList< QPolygonF > > toQPolygonF(Qgis::SymbolType type, QSizeF size) const
Converts the patch shape to a set of QPolygonF objects representing how the patch should be drawn for...
Line string geometry type, with support for z-dimension and m-values.
QVector< double > xVector() const
Returns the x vertex values as a vector.
QVector< double > yVector() const
Returns the y vertex values as a vector.
QVector< double > zVector() const
Returns the z vertex values as a vector.
Abstract base class for line symbol layers.
virtual void renderPolygonStroke(const QPolygonF &points, const QVector< QPolygonF > *rings, QgsSymbolRenderContext &context)
Renders the line symbol layer along the outline of polygon, using the given render context.
A line symbol type, for rendering LineString and MultiLineString geometries.
bool setId(const QString &id)
Sets the layer's id.
QgsMapLayer::LayerFlags flags() const
Returns the flags for this layer.
Implementation of GeometrySimplifier using the "MapToPixel" algorithm.
QgsGeometry simplify(const QgsGeometry &geometry) const override
Returns a simplified version the specified geometry.
Perform transforms between map coordinates and device coordinates.
void transformInPlace(double &x, double &y) const
Transforms map coordinates to device coordinates.
Struct for storing maximum and minimum scales for measurements in map units.
A marker symbol type, for rendering Point and MultiPoint geometries.
Multi point geometry collection.
Base class for visual effects which can be applied to QPicture drawings.
bool enabled() const
Returns whether the effect is enabled.
static void drawPicture(QPainter *painter, const QPointF &point, const QPicture &picture)
Draws a picture onto a painter, correctly applying workarounds to avoid issues with incorrect scaling...
Point geometry type, with support for z-dimension and m-values.
Polyhedral surface geometry type.
int numPatches() const
Returns the number of patches contained with the polyhedral surface.
const QgsPolygon * patchN(int i) const
Retrieves a patch from the polyhedral surface.
Qgis::ColorModel colorModel() const
Returns the project's color model.
static QgsProject * instance()
Returns the QgsProject singleton instance.
const QgsProjectStyleSettings * styleSettings() const
Returns the project's style settings, which contains settings and properties relating to how a QgsPro...
void setProperty(int key, const QgsProperty &property)
Adds a property to the collection and takes ownership of it.
bool prepare(const QgsExpressionContext &context=QgsExpressionContext()) const final
Prepares the collection against a specified expression context.
bool hasActiveProperties() const final
Returns true if the collection has any active properties, or false if all properties within the colle...
QSet< QString > referencedFields(const QgsExpressionContext &context=QgsExpressionContext(), bool ignoreContext=false) const final
Returns the set of any fields referenced by the active properties from the collection.
Definition for a property.
A store for object properties.
The class is used as a container of context for various read/write operations on other objects.
A rectangle specified with double values.
bool contains(const QgsRectangle &rect) const
Returns true when rectangle contains other rectangle.
double xMinimum() const
Returns the x minimum value (left side of rectangle).
double yMinimum() const
Returns the y minimum value (bottom side of rectangle).
double width() const
Returns the width of the rectangle.
double xMaximum() const
Returns the x maximum value (right side of rectangle).
bool isNull() const
Test if the rectangle is null (holding no spatial information).
double yMaximum() const
Returns the y maximum value (top side of rectangle).
bool isEmpty() const
Returns true if the rectangle has no area.
double height() const
Returns the height 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...
void setTextureOrigin(const QPointF &origin)
Sets the texture origin, which should be used as a brush transform when rendering using QBrush object...
bool symbolLayerHasClipGeometries(const QString &symbolLayerId) const
Returns true if the symbol layer with matching ID has any associated clip geometries.
bool hasRenderedFeatureHandlers() const
Returns true if the context has any rendered feature handlers.
QgsVectorSimplifyMethod & vectorSimplifyMethod()
Returns the simplification settings to use when rendering vector layers.
double segmentationTolerance() const
Gets the segmentation tolerance applied when rendering curved geometries.
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.
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 setGeometry(const QgsAbstractGeometry *geometry)
Sets pointer to original (unsegmentized) geometry.
QgsGeometry featureClipGeometry() const
Returns the geometry to use to clip features at render time.
const QgsRectangle & extent() const
When rendering a map layer, calling this method returns the "clipping" extent for the layer (in the l...
bool testFlag(Qgis::RenderContextFlag flag) const
Check whether a particular flag is enabled.
bool forceVectorOutput() const
Returns true if rendering operations should use vector operations instead of any faster raster shortc...
long long currentFrame() const
Returns the current frame number of the map (in frames per second), for maps which are part of an ani...
void setIsGuiPreview(bool preview)
Sets GUI preview mode.
QgsRectangle mapExtent() const
Returns the original extent of the map being rendered.
QList< QgsRenderedFeatureHandlerInterface * > renderedFeatureHandlers() const
Returns the list of rendered feature handlers to use while rendering map layers.
void setFlag(Qgis::RenderContextFlag flag, bool on=true)
Enable or disable a particular flag (other flags are not affected)
double frameRate() const
Returns the frame rate of the map, for maps which are part of an animation.
const QgsMapToPixel & mapToPixel() const
Returns the context's map to pixel transform, which transforms between map coordinates and device coo...
void setPainter(QPainter *p)
Sets the destination QPainter for the render operation.
bool isSymbolLayerEnabled(const QgsSymbolLayer *layer) const
When rendering a map layer in a second pass (for selective masking), some symbol layers may be disabl...
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.
QgsCoordinateTransform coordinateTransform() const
Returns the current coordinate transform for the context.
Qgis::RenderContextFlags flags() const
Returns combination of flags used for rendering.
QgsAbstractGeometry::SegmentationToleranceType segmentationToleranceType() const
Gets segmentation tolerance type (maximum angle or maximum difference between curve and approximation...
An interface for classes which provider custom handlers for features rendered as part of a map render...
Stores properties relating to a screen.
double devicePixelRatio() const
Returns the ratio between physical pixels and device-independent pixels for the screen.
bool isValid() const
Returns true if the properties are valid.
void updateRenderContextForScreen(QgsRenderContext &context) const
Updates the settings in a render context to match the screen settings.
Renders polygons using a single fill and stroke color.
static QgsStyle * defaultStyle(bool initialize=true)
Returns the default application-wide style.
QList< QList< QPolygonF > > defaultPatchAsQPolygonF(Qgis::SymbolType type, QSizeF size) const
Returns the default patch geometry for the given symbol type and size as a set of QPolygonF objects (...
Contains settings relating to symbol animation.
bool isAnimated() const
Returns true if the symbol is animated.
double frameRate() const
Returns the symbol animation frame rate (in frames per second).
Contains settings relating to symbol buffers, which draw a "halo" effect around the symbol.
QgsFillSymbol * fillSymbol() const
Returns the fill symbol used to render the buffer.
~QgsSymbolBufferSettings()
QgsSymbolBufferSettings()
void setFillSymbol(QgsFillSymbol *symbol)
Sets the fill symbol used to render the buffer.
void writeXml(QDomElement &element, const QgsReadWriteContext &context) const
Writes the buffer settings to an XML element.
QgsSymbolBufferSettings & operator=(const QgsSymbolBufferSettings &)
void readXml(const QDomElement &element, const QgsReadWriteContext &context)
Reads the buffer settings from an XML element.
static QString encodeMapUnitScale(const QgsMapUnitScale &mapUnitScale)
static void drawVertexMarker(double x, double y, QPainter &p, Qgis::VertexMarkerType type, int markerSize)
Draws a vertex symbol at (painter) coordinates x, y.
static QgsMapUnitScale decodeMapUnitScale(const QString &str)
static QString encodeSldUom(Qgis::RenderUnit unit, double *scaleFactor)
Encodes a render unit into an SLD unit of measure string.
static QList< QList< QPolygonF > > toQPolygonF(const QgsGeometry &geometry, Qgis::SymbolType type)
Converts a geometry to a set of QPolygonF objects representing how the geometry should be drawn for a...
static QDomElement saveSymbol(const QString &symbolName, const QgsSymbol *symbol, QDomDocument &doc, const QgsReadWriteContext &context)
Writes a symbol definition to XML.
virtual void startFeatureRender(const QgsFeature &feature, QgsRenderContext &context)
Called before the layer will be rendered for a particular feature.
bool installMasks(QgsRenderContext &context, bool recursive, const QRectF &rect=QRectF())
When rendering, install masks on context painter.
@ LayerEnabled
Whether symbol layer is enabled.
QgsPaintEffect * paintEffect() const
Returns the current paint effect for the layer.
virtual void startRender(QgsSymbolRenderContext &context)=0
Called before a set of rendering operations commences on the supplied render context.
bool enabled() const
Returns true if symbol layer is enabled and will be drawn.
virtual void stopRender(QgsSymbolRenderContext &context)=0
Called after a set of rendering operations has finished on the supplied render context.
QString id() const
Returns symbol layer identifier This id is unique in the whole project.
virtual void stopFeatureRender(const QgsFeature &feature, QgsRenderContext &context)
Called after the layer has been rendered for a particular feature.
virtual Qgis::SymbolLayerFlags flags() const
Returns flags which control the symbol layer's behavior.
void setSelected(bool selected)
Sets whether symbols should be rendered using the selected symbol coloring and style.
void setOriginalGeometryType(Qgis::GeometryType type)
Sets the geometry type for the original feature geometry being rendered.
void setPatchShape(const QgsLegendPatchShape &shape)
Sets the symbol patch shape, to use if rendering symbol preview icons.
QgsRenderContext & renderContext()
Returns a reference to the context's render context.
Abstract base class for all rendered symbols.
void renderUsingLayer(QgsSymbolLayer *layer, QgsSymbolRenderContext &context, Qgis::GeometryType geometryType=Qgis::GeometryType::Unknown, const QPolygonF *points=nullptr, const QVector< QPolygonF > *rings=nullptr)
Renders a context using a particular symbol layer without passing in a geometry.
Qgis::SymbolFlags mSymbolFlags
Symbol flags.
QgsSymbolLayerList cloneLayers() const
Retrieve a cloned list of all layers that make up this symbol.
void setOutputUnit(Qgis::RenderUnit unit) const
Sets the units to use for sizes and widths within the symbol.
Property
Data definable properties.
QgsSymbolRenderContext * symbolRenderContext()
Returns the symbol render context.
QgsSymbolLayer * symbolLayer(int layer)
Returns the symbol layer at the specified index.
Qgis::SymbolRenderHints renderHints() const
Returns the rendering hint flags for the symbol.
void copyCommonProperties(const QgsSymbol *other)
Copies common properties from an other symbol to this symbol.
void setDataDefinedProperty(Property key, const QgsProperty &property)
Sets a data defined property for the symbol.
void renderFeature(const QgsFeature &feature, QgsRenderContext &context, int layer=-1, bool selected=false, bool drawVertexMarker=false, Qgis::VertexMarkerType currentVertexMarkerType=Qgis::VertexMarkerType::SemiTransparentCircle, double currentVertexMarkerSize=0.0)
Render a feature.
QgsPropertyCollection & dataDefinedProperties()
Returns a reference to the symbol's property collection, used for data defined overrides.
static QPolygonF _getLineString(QgsRenderContext &context, const QgsCurve &curve, bool clipToExtent=true)
Creates a line string in screen coordinates from a QgsCurve in map coordinates.
void stopRender(QgsRenderContext &context)
Ends the rendering process.
qreal mOpacity
Symbol opacity (in the range 0 - 1)
Q_DECL_DEPRECATED const QgsVectorLayer * mLayer
static QPolygonF _getPolygonRing(QgsRenderContext &context, const QgsCurve &curve, bool clipToExtent, bool isExteriorRing=false, bool correctRingOrientation=false)
Creates a polygon ring in screen coordinates from a QgsCurve in map coordinates.
QgsSymbolAnimationSettings & animationSettings()
Returns a reference to the symbol animation settings.
void renderVertexMarker(QPointF pt, QgsRenderContext &context, Qgis::VertexMarkerType currentVertexMarkerType, double currentVertexMarkerSize)
Render editing vertex marker at specified point.
static QPointF _getPoint(QgsRenderContext &context, const QgsPoint &point)
Creates a point in screen coordinates from a QgsPoint in map coordinates.
static const QgsPropertiesDefinition & propertyDefinitions()
Returns the symbol property definitions.
bool appendSymbolLayer(QgsSymbolLayer *layer)
Appends a symbol layer at the end of the current symbol layer list.
bool mClipFeaturesToExtent
bool usesMapUnits() const
Returns true if the symbol has any components which use map unit based sizes.
Qgis::SymbolFlags flags() const
Returns flags for the symbol.
void toSld(QDomDocument &doc, QDomElement &element, QVariantMap props) const
Converts the symbol to a SLD representation.
void setColor(const QColor &color) const
Sets the color for the symbol.
bool insertSymbolLayer(int index, QgsSymbolLayer *layer)
Inserts a symbol layer to specified index.
QgsMapUnitScale mapUnitScale() const
Returns the map unit scale for the symbol.
static QString symbolTypeToString(Qgis::SymbolType type)
Returns a translated string version of the specified symbol type.
qreal opacity() const
Returns the opacity for the symbol.
bool canCauseArtifactsBetweenAdjacentTiles() const
Returns true if the symbol rendering can cause visible artifacts across a single feature when the fea...
static Qgis::SymbolType symbolTypeForGeometryType(Qgis::GeometryType type)
Returns the default symbol type required for the specified geometry type.
void setMapUnitScale(const QgsMapUnitScale &scale) const
Sets the map unit scale for the symbol.
bool clipFeaturesToExtent() const
Returns whether features drawn by the symbol will be clipped to the render context's extent.
QImage bigSymbolPreviewImage(QgsExpressionContext *expressionContext=nullptr, Qgis::SymbolPreviewFlags flags=Qgis::SymbolPreviewFlag::FlagIncludeCrosshairsForMarkerSymbols, const QgsScreenProperties &screen=QgsScreenProperties())
Returns a large (roughly 100x100 pixel) preview image for the symbol.
QgsSymbolBufferSettings * bufferSettings()
Returns the symbol buffer settings, which control an optional "halo" effect around the symbol.
QImage asImage(QSize size, QgsRenderContext *customContext=nullptr)
Returns an image of the symbol at the specified size.
static void _getPolygon(QPolygonF &pts, QVector< QPolygonF > &holes, QgsRenderContext &context, const QgsPolygon &polygon, bool clipToExtent=true, bool correctRingOrientation=false)
Creates a polygon in screen coordinates from a QgsPolygonXYin map coordinates.
QString dump() const
Returns a string dump of the symbol's properties.
bool hasDataDefinedProperties() const
Returns whether the symbol utilizes any data defined properties.
bool deleteSymbolLayer(int index)
Removes and deletes the symbol layer at the specified index.
QSet< QString > usedAttributes(const QgsRenderContext &context) const
Returns a list of attributes required to render this feature.
std::unique_ptr< QgsSymbolBufferSettings > mBufferSettings
bool changeSymbolLayer(int index, QgsSymbolLayer *layer)
Deletes the current layer at the specified index and replaces it with layer.
QgsSymbolLayer * takeSymbolLayer(int index)
Removes a symbol layer from the list and returns a pointer to it.
Qgis::SymbolRenderHints mRenderHints
QgsSymbolLayerList mLayers
void drawPreviewIcon(QPainter *painter, QSize size, QgsRenderContext *customContext=nullptr, bool selected=false, const QgsExpressionContext *expressionContext=nullptr, const QgsLegendPatchShape *patchShape=nullptr, const QgsScreenProperties &screen=QgsScreenProperties())
Draws an icon of the symbol that occupies an area given by size using the specified painter.
Q_DECL_DEPRECATED const QgsVectorLayer * layer() const
QgsSymbolAnimationSettings mAnimationSettings
void startFeatureRender(const QgsFeature &feature, QgsRenderContext &context, int layer=-1)
Called before symbol layers will be rendered for a particular feature.
QColor color() const
Returns the symbol's color.
Qgis::RenderUnit outputUnit() const
Returns the units to use for sizes and widths within the symbol.
Qgis::SymbolType type() const
Returns the symbol's type.
QgsSymbol(Qgis::SymbolType type, const QgsSymbolLayerList &layers)
Constructor for a QgsSymbol of the specified type.
void setAnimationSettings(const QgsSymbolAnimationSettings &settings)
Sets a the symbol animation settings.
void startRender(QgsRenderContext &context, const QgsFields &fields=QgsFields())
Begins the rendering process for the symbol.
void setBufferSettings(QgsSymbolBufferSettings *settings)
Sets a the symbol buffer settings, which control an optional "halo" effect around the symbol.
Q_DECL_DEPRECATED void setLayer(const QgsVectorLayer *layer)
void exportImage(const QString &path, const QString &format, QSize size)
Export the symbol as an image format, to the specified path and with the given size.
void stopFeatureRender(const QgsFeature &feature, QgsRenderContext &context, int layer=-1)
Called after symbol layers have been rendered for a particular feature.
static QgsSymbol * defaultSymbol(Qgis::GeometryType geomType)
Returns a new default symbol for the specified geometry type.
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.
Represents a vector layer which manages a vector based data sets.
QgsVectorLayer * clone() const override
Returns a new instance equivalent to this one.
double tolerance() const
Gets the tolerance of simplification in map units. Represents the maximum distance in map units betwe...
bool forceLocalOptimization() const
Gets where the simplification executes, after fetch the geometries from provider, or when supported,...
Qgis::VectorRenderingSimplificationFlags simplifyHints() const
Gets the simplification hints of the vector layer managed.
Qgis::VectorSimplificationAlgorithm simplifyAlgorithm() const
Gets the local simplification algorithm of the vector layer managed.
static QString displayString(Qgis::WkbType type)
Returns a non-translated display string type for a WKB type, e.g., the geometry name used in WKT geom...
static bool isCurvedType(Qgis::WkbType type)
Returns true if the WKB type is a curved type or can contain curved geometries.
static Qgis::WkbType flatType(Qgis::WkbType type)
Returns the flat type for a WKB type.
Contains geos related utilities and functions.
#define Q_NOWARN_DEPRECATED_POP
QString qgsDoubleToString(double a, int precision=17)
Returns a string representation of a double.
#define Q_NOWARN_DEPRECATED_PUSH
bool qgsDoubleNear(double a, double b, double epsilon=4 *std::numeric_limits< double >::epsilon())
Compare two doubles (but allow some difference)
#define QgsDebugMsgLevel(str, level)
#define QgsDebugError(str)
QMap< int, QgsPropertyDefinition > QgsPropertiesDefinition
Definition of available properties.
QList< QgsSymbolLayer * > QgsSymbolLayerList
Single variable definition for use within a QgsExpressionContextScope.
Utility class for identifying a unique vertex within a geometry.