67 mRect = mCanvas->rect();
70 prepareGeometryChange();
71 setPos( mRect.topLeft() );
74 mCachedImages.clear();
82 mCachedImages.clear();
87 bool redrawResults(
const QString &sourceId )
89 auto it = mCachedImages.find( sourceId );
90 if ( it == mCachedImages.end() )
93 mCachedImages.erase( it );
98 QRectF boundingRect()
const override
103 QString distanceSuffix()
const
105 switch ( mDistanceUnit )
119 return QObject::tr(
"°" );
128 mDistanceUnit = unit;
135 if ( !mPlotArea.isNull() )
140 if ( !scene()->views().isEmpty() )
141 context.
setScaleFactor( scene()->views().at( 0 )->logicalDpiX() / 25.4 );
150 const QRectF area = plotArea();
151 if ( !area.contains( point.x(), point.y() ) )
154 const double distance = ( point.x() - area.left() ) / area.width() * (
xMaximum() -
xMinimum() ) * mXScaleFactor +
xMinimum() * mXScaleFactor;
161 if ( point.
distance() < xMinimum() * mXScaleFactor || point.
distance() > xMaximum()* mXScaleFactor || point.
elevation() < yMinimum() || point.
elevation() > yMaximum() )
164 const QRectF area = plotArea();
173 mPlotArea = plotArea;
178 const double pixelRatio = !scene()->views().empty() ? scene()->views().at( 0 )->devicePixelRatioF() : 1;
180 const QStringList sourceIds = mRenderer->sourceIds();
181 for (
const QString &source : sourceIds )
184 auto it = mCachedImages.constFind( source );
185 if ( it != mCachedImages.constEnd() )
191 plot = mRenderer->renderToImage( plotArea.width() * pixelRatio,
192 plotArea.height() * pixelRatio, xMinimum() * mXScaleFactor,
xMaximum() * mXScaleFactor,
yMinimum(),
yMaximum(), source, pixelRatio );
193 plot.setDevicePixelRatio( pixelRatio );
194 mCachedImages.insert( source, plot );
196 rc.
painter()->drawImage( QPointF( plotArea.left(),
197 plotArea.top() ), plot );
201 void paint( QPainter *painter )
override
204 if ( !mImage.isNull() )
206 painter->drawImage( QPointF( 0, 0 ), mImage );
210 const double pixelRatio = !scene()->views().empty() ? scene()->views().at( 0 )->devicePixelRatioF() : 1;
211 mImage = QImage( mRect.width() * pixelRatio, mRect.height() * pixelRatio, QImage::Format_ARGB32_Premultiplied );
212 mImage.setDevicePixelRatio( pixelRatio );
213 mImage.fill( Qt::transparent );
215 QPainter imagePainter( &mImage );
216 imagePainter.setRenderHint( QPainter::Antialiasing,
true );
220 const double mapUnitsPerPixel = (
xMaximum() -
xMinimum() ) * mXScaleFactor / plotArea().width();
230 painter->drawImage( QPointF( 0, 0 ), mImage );
235 double mXScaleFactor = 1.0;
243 QMap< QString, QImage > mCachedImages;
256 , mPlotItem( plotItem )
262 mRect = mCanvas->rect();
264 prepareGeometryChange();
265 setPos( mRect.topLeft() );
275 QRectF boundingRect()
const override
280 void paint( QPainter *painter )
override
282 const QgsPointXY crossHairPlotPoint = mPlotItem->plotPointToCanvasPoint( mPoint );
283 if ( crossHairPlotPoint.
isEmpty() )
287 painter->setBrush( Qt::NoBrush );
289 crossHairPen.setCosmetic(
true );
290 crossHairPen.setWidthF( 1 );
291 crossHairPen.setStyle( Qt::DashLine );
292 crossHairPen.setCapStyle( Qt::FlatCap );
293 const QPalette scenePalette = mPlotItem->scene()->palette();
294 QColor penColor = scenePalette.color( QPalette::ColorGroup::Active, QPalette::Text );
295 penColor.setAlpha( 150 );
296 crossHairPen.setColor( penColor );
297 painter->setPen( crossHairPen );
298 painter->drawLine( QPointF( mPlotItem->plotArea().left(), crossHairPlotPoint.
y() ), QPointF( mPlotItem->plotArea().right(), crossHairPlotPoint.
y() ) );
299 painter->drawLine( QPointF( crossHairPlotPoint.
x(), mPlotItem->plotArea().top() ), QPointF( crossHairPlotPoint.
x(), mPlotItem->plotArea().bottom() ) );
304 const QString xCoordinateText = mPlotItem->xAxis().numericFormat()->formatDouble( mPoint.distance() / mPlotItem->mXScaleFactor, numericContext )
305 + mPlotItem->distanceSuffix();
307 const QString yCoordinateText = mPlotItem->yAxis().numericFormat()->formatDouble( mPoint.elevation(), numericContext );
310 const QFontMetrics fm( font );
311 const double height = fm.capHeight();
312 const double xWidth = fm.horizontalAdvance( xCoordinateText );
313 const double yWidth = fm.horizontalAdvance( yCoordinateText );
314 const double textAxisMargin = fm.horizontalAdvance(
' ' );
316 QPointF xCoordOrigin;
317 QPointF yCoordOrigin;
319 if ( mPoint.distance() < ( mPlotItem->xMaximum() + mPlotItem->xMinimum() ) * 0.5 * mPlotItem->mXScaleFactor )
321 if ( mPoint.elevation() < ( mPlotItem->yMaximum() + mPlotItem->yMinimum() ) * 0.5 )
324 xCoordOrigin = QPointF( crossHairPlotPoint.
x() + textAxisMargin, mPlotItem->plotArea().top() + height + textAxisMargin );
326 yCoordOrigin = QPointF( mPlotItem->plotArea().right() - yWidth - textAxisMargin, crossHairPlotPoint.
y() - textAxisMargin );
331 xCoordOrigin = QPointF( crossHairPlotPoint.
x() + textAxisMargin, mPlotItem->plotArea().bottom() - textAxisMargin );
333 yCoordOrigin = QPointF( mPlotItem->plotArea().right() - yWidth - textAxisMargin, crossHairPlotPoint.
y() + height + textAxisMargin );
338 if ( mPoint.elevation() < ( mPlotItem->yMaximum() + mPlotItem->yMinimum() ) * 0.5 )
341 xCoordOrigin = QPointF( crossHairPlotPoint.
x() - xWidth - textAxisMargin, mPlotItem->plotArea().top() + height + textAxisMargin );
343 yCoordOrigin = QPointF( mPlotItem->plotArea().left() + textAxisMargin, crossHairPlotPoint.
y() - textAxisMargin );
348 xCoordOrigin = QPointF( crossHairPlotPoint.
x() - xWidth - textAxisMargin, mPlotItem->plotArea().bottom() - textAxisMargin );
350 yCoordOrigin = QPointF( mPlotItem->plotArea().left() + textAxisMargin, crossHairPlotPoint.
y() + height + textAxisMargin );
355 QColor backgroundColor = mPlotItem->chartBackgroundSymbol()->color();
356 backgroundColor.setAlpha( 220 );
357 painter->setBrush( QBrush( backgroundColor ) );
358 painter->setPen( Qt::NoPen );
359 painter->drawRect( QRectF( xCoordOrigin.x() - textAxisMargin + 1, xCoordOrigin.y() - textAxisMargin - height + 1, xWidth + 2 * textAxisMargin - 2, height + 2 * textAxisMargin - 2 ) );
360 painter->drawRect( QRectF( yCoordOrigin.x() - textAxisMargin + 1, yCoordOrigin.y() - textAxisMargin - height + 1, yWidth + 2 * textAxisMargin - 2, height + 2 * textAxisMargin - 2 ) );
362 painter->setBrush( Qt::NoBrush );
363 painter->setPen( scenePalette.color( QPalette::ColorGroup::Active, QPalette::Text ) );
365 painter->drawText( xCoordOrigin, xCoordinateText );
366 painter->drawText( yCoordOrigin, yCoordinateText );
374 QgsElevationProfilePlotItem *mPlotItem =
nullptr;
384 mPlotItem =
new QgsElevationProfilePlotItem(
this );
389 mCrossHairsItem =
new QgsElevationProfileCrossHairsItem(
this, mPlotItem );
390 mCrossHairsItem->setZValue( 100 );
391 mCrossHairsItem->hide();
394 mDeferredRegenerationTimer =
new QTimer(
this );
395 mDeferredRegenerationTimer->setSingleShot(
true );
396 mDeferredRegenerationTimer->stop();
397 connect( mDeferredRegenerationTimer, &QTimer::timeout,
this, &QgsElevationProfileCanvas::startDeferredRegeneration );
399 mDeferredRedrawTimer =
new QTimer(
this );
400 mDeferredRedrawTimer->setSingleShot(
true );
401 mDeferredRedrawTimer->stop();
402 connect( mDeferredRedrawTimer, &QTimer::timeout,
this, &QgsElevationProfileCanvas::startDeferredRedraw );
410 mPlotItem->setRenderer(
nullptr );
411 mCurrentJob->deleteLater();
412 mCurrentJob =
nullptr;
420 mPlotItem->setRenderer(
nullptr );
423 mCurrentJob->deleteLater();
424 mCurrentJob =
nullptr;
430 const double dxPercent = dx / mPlotItem->plotArea().width();
431 const double dyPercent = dy / mPlotItem->plotArea().height();
434 const double dxPlot = - dxPercent * ( mPlotItem->xMaximum() - mPlotItem->xMinimum() );
435 const double dyPlot = dyPercent * ( mPlotItem->yMaximum() - mPlotItem->yMinimum() );
438 mPlotItem->setXMinimum( mPlotItem->xMinimum() + dxPlot );
439 mPlotItem->setXMaximum( mPlotItem->xMaximum() + dxPlot );
440 mPlotItem->setYMinimum( mPlotItem->yMinimum() + dyPlot );
441 mPlotItem->setYMaximum( mPlotItem->yMaximum() + dyPlot );
445 mPlotItem->updatePlot();
451 if ( !mPlotItem->plotArea().contains( x, y ) )
454 const double newCenterX = mPlotItem->xMinimum() + ( x - mPlotItem->plotArea().left() ) / mPlotItem->plotArea().width() * ( mPlotItem->xMaximum() - mPlotItem->xMinimum() );
455 const double newCenterY = mPlotItem->yMinimum() + ( mPlotItem->plotArea().bottom() - y ) / mPlotItem->plotArea().height() * ( mPlotItem->yMaximum() - mPlotItem->yMinimum() );
457 const double dxPlot = newCenterX - ( mPlotItem->xMaximum() + mPlotItem->xMinimum() ) * 0.5;
458 const double dyPlot = newCenterY - ( mPlotItem->yMaximum() + mPlotItem->yMinimum() ) * 0.5;
461 mPlotItem->setXMinimum( mPlotItem->xMinimum() + dxPlot );
462 mPlotItem->setXMaximum( mPlotItem->xMaximum() + dxPlot );
463 mPlotItem->setYMinimum( mPlotItem->yMinimum() + dyPlot );
464 mPlotItem->setYMaximum( mPlotItem->yMaximum() + dyPlot );
468 mPlotItem->updatePlot();
480 const double toleranceInPixels = QFontMetrics( font() ).horizontalAdvance(
' ' );
481 const double xToleranceInPlotUnits = ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor / ( mPlotItem->plotArea().width() ) * toleranceInPixels;
482 const double yToleranceInPlotUnits = ( mPlotItem->yMaximum() - mPlotItem->yMinimum() ) / ( mPlotItem->plotArea().height() ) * toleranceInPixels;
490 / ( ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor / ( mPlotItem->plotArea().width() ) );
497 const double toleranceInPixels = QFontMetrics( font() ).horizontalAdvance(
' ' );
498 const double xToleranceInPlotUnits = ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor / ( mPlotItem->plotArea().width() ) * toleranceInPixels;
499 const double yToleranceInPlotUnits = ( mPlotItem->yMaximum() - mPlotItem->yMinimum() ) / ( mPlotItem->plotArea().height() ) * toleranceInPixels;
507 / ( ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor / ( mPlotItem->plotArea().width() ) );
514void QgsElevationProfileCanvas::setupLayerConnections(
QgsMapLayer *layer,
bool isDisconnect )
529 switch ( layer->
type() )
562void QgsElevationProfileCanvas::adjustRangeForAxisScaleLock(
double &xMinimum,
double &xMaximum,
double &yMinimum,
double &yMaximum )
const
565 const double horizontalScale = ( xMaximum - xMinimum ) / mPlotItem->plotArea().width();
566 const double verticalScale = ( yMaximum - yMinimum ) / mPlotItem->plotArea().height();
567 if ( horizontalScale > verticalScale )
569 const double height = horizontalScale * mPlotItem->plotArea().height();
570 const double deltaHeight = ( yMaximum - yMinimum ) - height;
571 yMinimum += deltaHeight / 2;
572 yMaximum -= deltaHeight / 2;
576 const double width = verticalScale * mPlotItem->plotArea().width();
577 const double deltaWidth = ( ( xMaximum - xMinimum ) - width );
578 xMinimum += deltaWidth / 2;
579 xMaximum -= deltaWidth / 2;
585 return mDistanceUnit;
590 mDistanceUnit = unit;
591 const double oldMin = mPlotItem->xMinimum() * mPlotItem->mXScaleFactor;
592 const double oldMax = mPlotItem->xMaximum() * mPlotItem->mXScaleFactor;
594 mPlotItem->setXAxisUnits( mDistanceUnit );
595 mPlotItem->setXMinimum( oldMin / mPlotItem->mXScaleFactor );
596 mPlotItem->setXMaximum( oldMax / mPlotItem->mXScaleFactor );
597 mPlotItem->updatePlot();
602 if ( !color.isValid() )
604 QPalette customPalette = qApp->palette();
605 const QColor baseColor = qApp->palette().color( QPalette::ColorRole::Base );
606 const QColor windowColor = qApp->palette().color( QPalette::ColorRole::Window );
607 customPalette.setColor( QPalette::ColorRole::Base, windowColor );
608 customPalette.setColor( QPalette::ColorRole::Window, baseColor );
609 setPalette( customPalette );
610 scene()->setPalette( customPalette );
615 const bool isDarkTheme = color.lightnessF() < 0.5;
616 QPalette customPalette = qApp->palette();
617 customPalette.setColor( QPalette::ColorRole::Window, color );
620 customPalette.setColor( QPalette::ColorRole::Text, QColor( 255, 255, 255 ) );
621 customPalette.setColor( QPalette::ColorRole::Base, color.lighter( 120 ) );
625 customPalette.setColor( QPalette::ColorRole::Text, QColor( 0, 0, 0 ) );
626 customPalette.setColor( QPalette::ColorRole::Base, color.darker( 120 ) );
629 setPalette( customPalette );
630 scene()->setPalette( customPalette );
633 updateChartFromPalette();
638 return mLockAxisScales;
643 mLockAxisScales = lock;
644 if ( mLockAxisScales )
646 double xMinimum = mPlotItem->xMinimum() * mPlotItem->mXScaleFactor;
647 double xMaximum = mPlotItem->xMaximum() * mPlotItem->mXScaleFactor;
648 double yMinimum = mPlotItem->yMinimum();
649 double yMaximum = mPlotItem->yMaximum();
650 adjustRangeForAxisScaleLock( xMinimum, xMaximum, yMinimum, yMaximum );
651 mPlotItem->setXMinimum( xMinimum / mPlotItem->mXScaleFactor );
652 mPlotItem->setXMaximum( xMaximum / mPlotItem->mXScaleFactor );
653 mPlotItem->setYMinimum( yMinimum );
654 mPlotItem->setYMaximum( yMaximum );
657 mPlotItem->updatePlot();
664 if ( !mCurrentJob || !mSnappingEnabled )
678 if ( mLockAxisScales )
681 const double currentWidth = ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor;
682 const double currentHeight = mPlotItem->yMaximum() - mPlotItem->yMinimum();
684 const double newWidth = currentWidth / xFactor;
685 const double newHeight = currentHeight / yFactor;
687 const double currentCenterX = ( mPlotItem->xMinimum() + mPlotItem->xMaximum() ) * 0.5 * mPlotItem->mXScaleFactor;
688 const double currentCenterY = ( mPlotItem->yMinimum() + mPlotItem->yMaximum() ) * 0.5;
690 double xMinimum = currentCenterX - newWidth * 0.5;
691 double xMaximum = currentCenterX + newWidth * 0.5;
692 double yMinimum = currentCenterY - newHeight * 0.5;
693 double yMaximum = currentCenterY + newHeight * 0.5;
694 if ( mLockAxisScales )
696 adjustRangeForAxisScaleLock( xMinimum, xMaximum, yMinimum, yMaximum );
699 mPlotItem->setXMinimum( xMinimum / mPlotItem->mXScaleFactor );
700 mPlotItem->setXMaximum( xMaximum / mPlotItem->mXScaleFactor );
701 mPlotItem->setYMinimum( yMinimum );
702 mPlotItem->setYMaximum( yMaximum );
705 mPlotItem->updatePlot();
711 const QRectF intersected = rect.intersected( mPlotItem->plotArea() );
713 double minX = ( intersected.left() - mPlotItem->plotArea().left() ) / mPlotItem->plotArea().width() * ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor + mPlotItem->xMinimum() * mPlotItem->mXScaleFactor;
714 double maxX = ( intersected.right() - mPlotItem->plotArea().left() ) / mPlotItem->plotArea().width() * ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor + mPlotItem->xMinimum() * mPlotItem->mXScaleFactor;
715 double minY = ( mPlotItem->plotArea().bottom() - intersected.bottom() ) / mPlotItem->plotArea().height() * ( mPlotItem->yMaximum() - mPlotItem->yMinimum() ) + mPlotItem->yMinimum();
716 double maxY = ( mPlotItem->plotArea().bottom() - intersected.top() ) / mPlotItem->plotArea().height() * ( mPlotItem->yMaximum() - mPlotItem->yMinimum() ) + mPlotItem->yMinimum();
718 if ( mLockAxisScales )
720 adjustRangeForAxisScaleLock( minX, maxX, minY, maxY );
723 mPlotItem->setXMinimum( minX / mPlotItem->mXScaleFactor );
724 mPlotItem->setXMaximum( maxX / mPlotItem->mXScaleFactor );
725 mPlotItem->setYMinimum( minY );
726 mPlotItem->setYMaximum( maxY );
729 mPlotItem->updatePlot();
737 double zoomFactor = settings.
value( QStringLiteral(
"qgis/zoom_factor" ), 2 ).toDouble();
738 bool reverseZoom = settings.
value( QStringLiteral(
"qgis/reverse_wheel_zoom" ),
false ).toBool();
739 bool zoomIn = reverseZoom ?
event->angleDelta().y() < 0 :
event->angleDelta().y() > 0;
742 zoomFactor = 1.0 + ( zoomFactor - 1.0 ) / 120.0 * std::fabs(
event->angleDelta().y() );
744 if (
event->modifiers() & Qt::ControlModifier )
747 zoomFactor = 1.0 + ( zoomFactor - 1.0 ) / 20.0;
751 double scaleFactor = ( zoomIn ? 1 / zoomFactor : zoomFactor );
753 QRectF viewportRect = mPlotItem->plotArea();
755 if ( viewportRect.contains(
event->position() ) )
758 const double oldCenterX = 0.5 * ( mPlotItem->xMaximum() + mPlotItem->xMinimum() );
759 const double oldCenterY = 0.5 * ( mPlotItem->yMaximum() + mPlotItem->yMinimum() );
761 const double eventPosX = (
event->position().x() - viewportRect.left() ) / viewportRect.width() * ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) + mPlotItem->xMinimum();
762 const double eventPosY = ( viewportRect.bottom() -
event->position().y() ) / viewportRect.height() * ( mPlotItem->yMaximum() - mPlotItem->yMinimum() ) + mPlotItem->yMinimum();
764 const double newCenterX = eventPosX + ( ( oldCenterX - eventPosX ) * scaleFactor );
765 const double newCenterY = eventPosY + ( ( oldCenterY - eventPosY ) * scaleFactor );
767 const double dxPlot = newCenterX - ( mPlotItem->xMaximum() + mPlotItem->xMinimum() ) * 0.5;
768 const double dyPlot = newCenterY - ( mPlotItem->yMaximum() + mPlotItem->yMinimum() ) * 0.5;
771 mPlotItem->setXMinimum( mPlotItem->xMinimum() + dxPlot );
772 mPlotItem->setXMaximum( mPlotItem->xMaximum() + dxPlot );
773 mPlotItem->setYMinimum( mPlotItem->yMinimum() + dyPlot );
774 mPlotItem->setYMaximum( mPlotItem->yMaximum() + dyPlot );
792 if ( e->isAccepted() )
794 mCrossHairsItem->hide();
799 if ( mCurrentJob && mSnappingEnabled && !plotPoint.
isEmpty() )
808 mCrossHairsItem->hide();
812 mCrossHairsItem->setPoint( plotPoint );
813 mCrossHairsItem->show();
820 return mPlotItem->plotArea();
830 mPlotItem->setRenderer(
nullptr );
832 mCurrentJob->deleteLater();
833 mCurrentJob =
nullptr;
846 const QList< QgsMapLayer * > layersToGenerate =
layers();
847 QList< QgsAbstractProfileSource * > sources;
849 sources.reserve( layersToGenerate.size() + registrySources.size() );
851 sources << registrySources;
855 sources.append( source );
863 generationContext.
setMaximumErrorMapUnits( MAX_ERROR_PIXELS * ( mProfileCurve->length() ) / mPlotItem->plotArea().width() );
868 mPlotItem->setRenderer( mCurrentJob );
875 mZoomFullWhenJobFinished =
true;
878void QgsElevationProfileCanvas::generationFinished()
885 if ( mZoomFullWhenJobFinished )
888 mZoomFullWhenJobFinished =
false;
897 mPlotItem->updatePlot();
900 if ( mForceRegenerationAfterCurrentJobCompletes )
902 mForceRegenerationAfterCurrentJobCompletes =
false;
904 scheduleDeferredRegeneration();
908void QgsElevationProfileCanvas::onLayerProfileGenerationPropertyChanged()
911 if ( !mCurrentJob || mCurrentJob->
isActive() )
918 if (
QgsMapLayer *layer = qobject_cast< QgsMapLayer * >( properties->parent() ) )
923 scheduleDeferredRegeneration();
928void QgsElevationProfileCanvas::onLayerProfileRendererPropertyChanged()
931 if ( !mCurrentJob || mCurrentJob->
isActive() )
938 if (
QgsMapLayer *layer = qobject_cast< QgsMapLayer * >( properties->parent() ) )
944 if ( mPlotItem->redrawResults( layer->
id() ) )
945 scheduleDeferredRedraw();
949void QgsElevationProfileCanvas::regenerateResultsForLayer()
951 if (
QgsMapLayer *layer = qobject_cast< QgsMapLayer * >( sender() ) )
956 scheduleDeferredRegeneration();
961void QgsElevationProfileCanvas::scheduleDeferredRegeneration()
963 if ( !mDeferredRegenerationScheduled )
965 mDeferredRegenerationTimer->start( 1 );
966 mDeferredRegenerationScheduled =
true;
970void QgsElevationProfileCanvas::scheduleDeferredRedraw()
972 if ( !mDeferredRedrawScheduled )
974 mDeferredRedrawTimer->start( 1 );
975 mDeferredRedrawScheduled =
true;
979void QgsElevationProfileCanvas::startDeferredRegeneration()
981 if ( mCurrentJob && !mCurrentJob->
isActive() )
986 else if ( mCurrentJob )
988 mForceRegenerationAfterCurrentJobCompletes =
true;
991 mDeferredRegenerationScheduled =
false;
994void QgsElevationProfileCanvas::startDeferredRedraw()
997 mDeferredRedrawScheduled =
false;
1000void QgsElevationProfileCanvas::refineResults()
1006 const double plotDistanceRange = ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor;
1007 const double plotElevationRange = mPlotItem->yMaximum() - mPlotItem->yMinimum();
1008 const double plotDistanceUnitsPerPixel = plotDistanceRange / mPlotItem->plotArea().width();
1012 const double targetMaxErrorInMapUnits = MAX_ERROR_PIXELS * plotDistanceUnitsPerPixel;
1013 const double factor = std::pow( 10.0, 1 - std::ceil( std::log10( std::fabs( targetMaxErrorInMapUnits ) ) ) );
1014 const double roundedErrorInMapUnits = std::floor( targetMaxErrorInMapUnits * factor ) / factor;
1022 mPlotItem->xMaximum() * mPlotItem->mXScaleFactor + plotDistanceRange * 0.05 ) );
1025 mPlotItem->yMaximum() + plotElevationRange * 0.05 ) );
1028 scheduleDeferredRegeneration();
1031void QgsElevationProfileCanvas::updateChartFromPalette()
1033 const QPalette chartPalette = palette();
1034 setBackgroundBrush( QBrush( chartPalette.color( QPalette::ColorRole::Base ) ) );
1037 textFormat.
setColor( chartPalette.color( QPalette::ColorGroup::Active, QPalette::Text ) );
1038 mPlotItem->xAxis().setTextFormat( textFormat );
1039 mPlotItem->yAxis().setTextFormat( textFormat );
1042 std::unique_ptr< QgsFillSymbol > chartFill( mPlotItem->chartBackgroundSymbol()->clone() );
1043 chartFill->setColor( chartPalette.color( QPalette::ColorGroup::Active, QPalette::ColorRole::Window ) );
1044 mPlotItem->setChartBackgroundSymbol( chartFill.release() );
1047 std::unique_ptr< QgsFillSymbol > chartBorder( mPlotItem->chartBorderSymbol()->clone() );
1048 chartBorder->setColor( chartPalette.color( QPalette::ColorGroup::Active, QPalette::ColorRole::Text ) );
1049 mPlotItem->setChartBorderSymbol( chartBorder.release() );
1052 std::unique_ptr< QgsLineSymbol > chartMajorSymbol( mPlotItem->xAxis().gridMajorSymbol()->clone() );
1053 QColor
c = chartPalette.color( QPalette::ColorGroup::Active, QPalette::ColorRole::Text );
1055 chartMajorSymbol->setColor(
c );
1056 mPlotItem->xAxis().setGridMajorSymbol( chartMajorSymbol->clone() );
1057 mPlotItem->yAxis().setGridMajorSymbol( chartMajorSymbol.release() );
1060 std::unique_ptr< QgsLineSymbol > chartMinorSymbol( mPlotItem->xAxis().gridMinorSymbol()->clone() );
1061 QColor
c = chartPalette.color( QPalette::ColorGroup::Active, QPalette::ColorRole::Text );
1063 chartMinorSymbol->setColor(
c );
1064 mPlotItem->xAxis().setGridMinorSymbol( chartMinorSymbol->clone() );
1065 mPlotItem->yAxis().setGridMinorSymbol( chartMinorSymbol.release() );
1067 mPlotItem->updatePlot();
1072 if ( !mPlotItem->plotArea().contains( point.x(), point.y() ) )
1075 return mPlotItem->canvasPointToPlotPoint( point );
1080 return mPlotItem->plotPointToCanvasPoint( point );
1086 mPlotItem->mProject = project;
1096 mProfileCurve.reset( curve );
1101 return mProfileCurve.get();
1116 for (
QgsMapLayer *layer : std::as_const( mLayers ) )
1118 setupLayerConnections( layer,
true );
1122 auto filteredList =
layers;
1123 filteredList.erase( std::remove_if( filteredList.begin(), filteredList.end(),
1126 return !layer || !layer->isValid();
1127 } ), filteredList.end() );
1129 mLayers = _qgis_listRawToQPointer( filteredList );
1130 for (
QgsMapLayer *layer : std::as_const( mLayers ) )
1132 setupLayerConnections( layer,
false );
1138 return _qgis_listQPointerToRaw( mLayers );
1145 if ( mLockAxisScales )
1147 double xMinimum = mPlotItem->xMinimum();
1148 double xMaximum = mPlotItem->xMaximum();
1149 double yMinimum = mPlotItem->yMinimum();
1150 double yMaximum = mPlotItem->yMaximum();
1151 adjustRangeForAxisScaleLock( xMinimum, xMaximum, yMinimum, yMaximum );
1152 mPlotItem->setXMinimum( xMinimum );
1153 mPlotItem->setXMaximum( xMaximum );
1154 mPlotItem->setYMinimum( yMinimum );
1155 mPlotItem->setYMaximum( yMaximum );
1158 mPlotItem->updateRect();
1159 mCrossHairsItem->updateRect();
1164 QgsPlotCanvas::paintEvent(
event );
1166 if ( !mFirstDrawOccurred )
1169 mFirstDrawOccurred =
true;
1170 mPlotItem->updateRect();
1171 mCrossHairsItem->updateRect();
1177 if ( !mPlotItem->plotArea().contains( point.
x(), point.
y() ) )
1180 if ( !mProfileCurve )
1183 const double dx = point.
x() - mPlotItem->plotArea().left();
1185 const double distanceAlongPlotPercent = dx / mPlotItem->plotArea().width();
1186 double distanceAlongCurveLength = distanceAlongPlotPercent * ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor + mPlotItem->xMinimum() * mPlotItem->mXScaleFactor;
1188 std::unique_ptr< QgsPoint > mapXyPoint( mProfileCurve->interpolatePoint( distanceAlongCurveLength ) );
1192 const double mapZ = ( mPlotItem->yMaximum() - mPlotItem->yMinimum() ) / ( mPlotItem->plotArea().height() ) * ( mPlotItem->plotArea().bottom() - point.
y() ) + mPlotItem->yMinimum();
1194 return QgsPoint( mapXyPoint->x(), mapXyPoint->y(), mapZ );
1199 if ( !mProfileCurve )
1204 const double distanceAlongCurve =
geos.lineLocatePoint( point, &error );
1206 const double distanceAlongCurveOnPlot = distanceAlongCurve - mPlotItem->xMinimum() * mPlotItem->mXScaleFactor;
1207 const double distanceAlongCurvePercent = distanceAlongCurveOnPlot / ( ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor );
1208 const double distanceAlongPlotRect = distanceAlongCurvePercent * mPlotItem->plotArea().width();
1210 const double canvasX = mPlotItem->plotArea().left() + distanceAlongPlotRect;
1213 if ( std::isnan( point.
z() ) || point.
z() < mPlotItem->yMinimum() )
1215 canvasY = mPlotItem->plotArea().top();
1217 else if ( point.
z() > mPlotItem->yMaximum() )
1219 canvasY = mPlotItem->plotArea().bottom();
1223 const double yPercent = ( point.
z() - mPlotItem->yMinimum() ) / ( mPlotItem->yMaximum() - mPlotItem->yMinimum() );
1224 canvasY = mPlotItem->plotArea().bottom() - mPlotItem->plotArea().height() * yPercent;
1237 double yMinimum = 0;
1238 double yMaximum = 0;
1249 yMinimum = zRange.
lower() - 5;
1250 yMaximum = zRange.
lower() + 5;
1255 const double margin = ( zRange.
upper() - zRange.
lower() ) * 0.05;
1256 yMinimum = zRange.
lower() - margin;
1257 yMaximum = zRange.
upper() + margin;
1261 double xMinimum = 0;
1263 double xMaximum = profileLength * 1.02;
1265 if ( mLockAxisScales )
1267 adjustRangeForAxisScaleLock( xMinimum, xMaximum, yMinimum, yMaximum );
1270 mPlotItem->setXMinimum( xMinimum / mPlotItem->mXScaleFactor );
1271 mPlotItem->setXMaximum( xMaximum / mPlotItem->mXScaleFactor );
1272 mPlotItem->setYMinimum( yMinimum );
1273 mPlotItem->setYMaximum( yMaximum );
1276 mPlotItem->updatePlot();
1282 if ( mLockAxisScales )
1284 adjustRangeForAxisScaleLock( minimumDistance, maximumDistance, minimumElevation, maximumElevation );
1287 mPlotItem->setYMinimum( minimumElevation );
1288 mPlotItem->setYMaximum( maximumElevation );
1289 mPlotItem->setXMinimum( minimumDistance / mPlotItem->mXScaleFactor );
1290 mPlotItem->setXMaximum( maximumDistance / mPlotItem->mXScaleFactor );
1292 mPlotItem->updatePlot();
1298 return QgsDoubleRange( mPlotItem->xMinimum() * mPlotItem->mXScaleFactor, mPlotItem->xMaximum() * mPlotItem->mXScaleFactor );
1303 return QgsDoubleRange( mPlotItem->yMinimum(), mPlotItem->yMaximum() );
1312class QgsElevationProfilePlot :
public Qgs2DPlot
1317 : mRenderer( renderer )
1326 rc.
painter()->translate( plotArea.left(), plotArea.top() );
1327 mRenderer->render( rc, plotArea.width(), plotArea.height(), xMinimum() * mXScale,
xMaximum() * mXScale,
yMinimum(),
yMaximum() );
1328 rc.
painter()->translate( -plotArea.left(), -plotArea.top() );
1347 QgsElevationProfilePlot profilePlot( mCurrentJob );
1351 QDomElement elem = doc.createElement( QStringLiteral(
"plot" ) );
1353 plotSettings.
writeXml( elem, doc, rwContext );
1354 profilePlot.readXml( elem, rwContext );
1356 profilePlot.mXScale = mPlotItem->mXScaleFactor;
1357 profilePlot.xAxis().setLabelSuffix( mPlotItem->xAxis().labelSuffix() );
1358 profilePlot.xAxis().setLabelSuffixPlacement( mPlotItem->xAxis().labelSuffixPlacement() );
1360 profilePlot.setSize( QSizeF( width, height ) );
1361 profilePlot.render( context );
1371 return mCurrentJob->
identify( plotPoint, identifyContext() );
1382 double distance1 = topLeftPlotPoint.
distance();
1383 double distance2 = bottomRightPlotPoint.
distance();
1384 if ( distance2 < distance1 )
1385 std::swap( distance1, distance2 );
1387 double elevation1 = topLeftPlotPoint.
elevation();
1388 double elevation2 = bottomRightPlotPoint.
elevation();
1389 if ( elevation2 < elevation1 )
1390 std::swap( elevation1, elevation2 );
1398 mPlotItem->setRenderer(
nullptr );
1399 mPlotItem->updatePlot();
1404 mSnappingEnabled = enabled;
@ FirstAndLastLabels
Place suffix after the first and last label values only.
DistanceUnit
Units of distance.
@ Centimeters
Centimeters.
@ Millimeters
Millimeters.
@ Miles
Terrestrial miles.
@ Unknown
Unknown distance unit.
@ Degrees
Degrees, for planar geographic CRS distance measurements.
@ Inches
Inches (since QGIS 3.32)
@ NauticalMiles
Nautical miles.
@ Group
Composite group layer. Added in QGIS 3.24.
@ Plugin
Plugin based layer.
@ TiledScene
Tiled scene layer. Added in QGIS 3.34.
@ Annotation
Contains freeform, georeferenced annotations. Added in QGIS 3.16.
@ VectorTile
Vector tile layer. Added in QGIS 3.14.
@ Mesh
Mesh layer. Added in QGIS 3.2.
@ PointCloud
Point cloud layer. Added in QGIS 3.18.
Base class for 2-dimensional plot/chart/graphs.
void calculateOptimisedIntervals(QgsRenderContext &context)
Automatically sets the grid and label intervals to optimal values for display in the given render con...
double yMaximum() const
Returns the maximum value of the y axis.
bool writeXml(QDomElement &element, QDomDocument &document, const QgsReadWriteContext &context) const override
Writes the plot's properties into an XML element.
QgsPlotAxis & xAxis()
Returns a reference to the plot's x axis.
void setSize(QSizeF size)
Sets the overall size of the plot (including titles and over components which sit outside the plot ar...
double xMaximum() const
Returns the maximum value of the x axis.
void render(QgsRenderContext &context)
Renders the plot.
void setYMaximum(double maximum)
Sets the maximum value of the y axis.
double xMinimum() const
Returns the minimum value of the x axis.
double yMinimum() const
Returns the minimum value of the y axis.
QRectF interiorPlotArea(QgsRenderContext &context) const
Returns the area of the plot which corresponds to the actual plot content (excluding all titles and o...
void setYMinimum(double minimum)
Sets the minimum value of the y axis.
virtual void renderContent(QgsRenderContext &context, const QRectF &plotArea)
Renders the plot content.
virtual double length() const
Returns the planar, 2-dimensional length of the geometry.
Interface for classes which can generate elevation profiles.
virtual QgsAbstractTerrainProvider * clone() const =0
Creates a clone of the provider and returns the new object.
static QgsProfileSourceRegistry * profileSourceRegistry()
Returns registry of available profile source implementations.
This class represents a coordinate reference system (CRS).
Qgis::DistanceUnit mapUnits
Abstract base class for curved geometry type.
QgsRange which stores a range of double values.
A canvas for elevation profiles.
QgsDoubleRange visibleElevationRange() const
Returns the elevation range currently visible in the plot.
QgsCurve * profileCurve() const
Returns the profile curve.
void setTolerance(double tolerance)
Sets the profile tolerance (in crs() units).
void setLockAxisScales(bool lock)
Sets whether the distance and elevation scales are locked to each other.
void setProfileCurve(QgsCurve *curve)
Sets the profile curve.
void zoomToRect(const QRectF &rect) override
Zooms the plot to the specified rect in canvas units.
void activeJobCountChanged(int count)
Emitted when the number of active background jobs changes.
QgsElevationProfileCanvas(QWidget *parent=nullptr)
Constructor for QgsElevationProfileCanvas, with the specified parent widget.
void scalePlot(double factor) override
Scales the plot by a specified scale factor.
void paintEvent(QPaintEvent *event) override
QgsDoubleRange visibleDistanceRange() const
Returns the distance range currently visible in the plot.
void cancelJobs() override
Cancel any rendering job, in a blocking way.
QgsCoordinateReferenceSystem crs() const override
Returns the coordinate reference system (CRS) for map coordinates used by the canvas.
void clear()
Clears the current profile.
void setDistanceUnit(Qgis::DistanceUnit unit)
Sets the distance unit used by the canvas.
QgsProfilePoint canvasPointToPlotPoint(QPointF point) const
Converts a canvas point to the equivalent plot point.
void setBackgroundColor(const QColor &color)
Sets the background color to use for the profile canvas.
QgsPointXY plotPointToCanvasPoint(const QgsProfilePoint &point) const
Converts a plot point to the equivalent canvas point.
QgsPoint toMapCoordinates(const QgsPointXY &point) const override
Converts a point on the canvas to the associated map coordinate.
bool lockAxisScales() const
Returns true if the distance and elevation scales are locked to each other.
void setVisiblePlotRange(double minimumDistance, double maximumDistance, double minimumElevation, double maximumElevation)
Sets the visible area of the plot.
void canvasPointHovered(const QgsPointXY &point, const QgsProfilePoint &profilePoint)
Emitted when the mouse hovers over the specified point (in canvas coordinates).
void render(QgsRenderContext &context, double width, double height, const Qgs2DPlot &plotSettings)
Renders a portion of the profile using the specified render context.
QgsPointXY snapToPlot(QPoint point) override
Snap a canvas point to the plot.
void setProject(QgsProject *project)
Sets the project associated with the profile.
QList< QgsMapLayer * > layers() const
Returns the list of layers included in the profile.
void resizeEvent(QResizeEvent *event) override
void centerPlotOn(double x, double y) override
Centers the plot on the plot point corresponding to x, y in canvas units.
const Qgs2DPlot & plot() const
Returns a reference to the 2D plot used by the widget.
void wheelZoom(QWheelEvent *event) override
Zoom plot from a mouse wheel event.
void refresh() override
Triggers a complete regeneration of the profile, causing the profile extraction to perform in the bac...
Qgis::DistanceUnit distanceUnit() const
Returns the distance unit used by the canvas.
double tolerance() const
Returns the tolerance of the profile (in crs() units).
void mouseMoveEvent(QMouseEvent *e) override
void panContentsBy(double dx, double dy) override
Pans the plot contents by dx, dy in canvas units.
void invalidateCurrentPlotExtent()
Invalidates the current plot extent, which means that the visible plot area will be recalculated and ...
QgsPointXY toCanvasCoordinates(const QgsPoint &point) const override
Converts a point in map coordinates to the associated canvas point.
void setCrs(const QgsCoordinateReferenceSystem &crs)
Sets the crs associated with the canvas' map coordinates.
~QgsElevationProfileCanvas() override
void setLayers(const QList< QgsMapLayer * > &layers)
Sets the list of layers to include in the profile.
void zoomFull()
Zooms to the full extent of the profile.
void setSnappingEnabled(bool enabled)
Sets whether snapping of cursor points is enabled.
QVector< QgsProfileIdentifyResults > identify(QPointF point)
Identify results visible at the specified plot point.
QRectF plotArea() const
Returns the interior rectangle representing the surface of the plot, in canvas coordinates.
static QgsExpressionContextScope * projectScope(const QgsProject *project)
Creates a new scope which contains variables and functions relating to a QGIS project.
static QgsExpressionContextScope * globalScope()
Creates a new scope which contains variables and functions relating to the global QGIS context.
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
void appendScope(QgsExpressionContextScope *scope)
Appends a scope to the end of the context.
Does vector analysis using the geos library and handles import, export, exception handling*.
Base class for storage of map layer elevation properties.
void profileGenerationPropertyChanged()
Emitted when any of the elevation properties which relate solely to generation of elevation profiles ...
void profileRenderingPropertyChanged()
Emitted when any of the elevation properties which relate solely to presentation of elevation results...
Base class for all map layer types.
void dataChanged()
Data of layer changed.
virtual QgsMapLayerElevationProperties * elevationProperties()
Returns the layer's elevation properties.
Perform transforms between map coordinates and device coordinates.
A context for numeric formats.
void setLabelSuffixPlacement(Qgis::PlotAxisSuffixPlacement placement)
Sets the placement for the axis label suffixes.
void setLabelSuffix(const QString &suffix)
Sets the axis label suffix.
An abstract class for items that can be placed on a QgsPlotCanvas.
virtual void paint(QPainter *painter)=0
Paints the item.
Plot canvas is a class for displaying interactive 2d charts and plots.
bool event(QEvent *e) override
void plotAreaChanged()
Emitted whenever the visible area of the plot is changed.
void mouseMoveEvent(QMouseEvent *e) override
void resizeEvent(QResizeEvent *e) override
A class to represent a 2D point.
bool isEmpty() const
Returns true if the geometry is empty.
Point geometry type, with support for z-dimension and m-values.
Encapsulates the context in which an elevation profile is to be generated.
double maximumErrorMapUnits() const
Returns the maximum allowed error in the generated result, in profile curve map units.
void setDpi(double dpi)
Sets the dpi (dots per inch) for the profie, to be used in size conversions.
void setMaximumErrorMapUnits(double error)
Sets the maximum allowed error in the generated result, in profile curve map units.
void setDistanceRange(const QgsDoubleRange &range)
Sets the range of distances to include in the generation.
void setElevationRange(const QgsDoubleRange &range)
Sets the range of elevations to include in the generation.
void setMapUnitsPerDistancePixel(double units)
Sets the number of map units per pixel in the distance dimension.
Encapsulates the context of identifying profile results.
double maximumPointElevationDelta
Maximum allowed snapping delta for the elevation values when identifying a point.
double maximumPointDistanceDelta
Maximum allowed snapping delta for the distance values when identifying a point.
QgsProject * project
Associated project.
double displayRatioElevationVsDistance
Display ratio of elevation vs distance units.
double maximumSurfaceDistanceDelta
Maximum allowed snapping delta for the distance values when identifying a continuous elevation surfac...
double maximumSurfaceElevationDelta
Maximum allowed snapping delta for the elevation values when identifying a continuous elevation surfa...
Generates and renders elevation profile plots.
QgsProfileSnapResult snapPoint(const QgsProfilePoint &point, const QgsProfileSnapContext &context)
Snap a point to the results.
void regenerateInvalidatedResults()
Starts a background regeneration of any invalidated results and immediately returns.
void invalidateAllRefinableSources()
Invalidates previous results from all refinable sources.
void cancelGeneration()
Stop the generation job - does not return until the job has terminated.
void startGeneration()
Start the generation job and immediately return.
QgsDoubleRange zRange() const
Returns the limits of the retrieved elevation values.
QVector< QgsProfileIdentifyResults > identify(const QgsProfilePoint &point, const QgsProfileIdentifyContext &context)
Identify results visible at the specified profile point.
bool isActive() const
Returns true if the generation job is currently running in background.
bool invalidateResults(QgsAbstractProfileSource *source)
Invalidates the profile results from the source with matching ID.
void replaceSource(QgsAbstractProfileSource *source)
Replaces the existing source with matching ID.
void setContext(const QgsProfileGenerationContext &context)
Sets the context in which the profile generation will occur.
void generationFinished()
Emitted when the profile generation is finished (or canceled).
Encapsulates a point on a distance-elevation profile.
double elevation() const
Returns the elevation of the point.
double distance() const
Returns the distance of the point.
bool isEmpty() const
Returns true if the point is empty.
Encapsulates properties and constraints relating to fetching elevation profiles from different source...
QgsProfileRequest & setExpressionContext(const QgsExpressionContext &context)
Sets the expression context used to evaluate expressions.
QgsProfileRequest & setTransformContext(const QgsCoordinateTransformContext &context)
Sets the transform context, for use when transforming coordinates from a source to the request's crs(...
QgsProfileRequest & setTerrainProvider(QgsAbstractTerrainProvider *provider)
Sets the terrain provider.
QgsProfileRequest & setTolerance(double tolerance)
Sets the tolerance of the request (in crs() units).
QgsProfileRequest & setCrs(const QgsCoordinateReferenceSystem &crs)
Sets the desired Coordinate Reference System (crs) for the profile.
Encapsulates the context of snapping a profile point.
double maximumPointDistanceDelta
Maximum allowed snapping delta for the distance values when snapping to a point.
double maximumSurfaceElevationDelta
Maximum allowed snapping delta for the elevation values when snapping to a continuous elevation surfa...
double maximumPointElevationDelta
Maximum allowed snapping delta for the elevation values when snapping to a point.
double maximumSurfaceDistanceDelta
Maximum allowed snapping delta for the distance values when snapping to a continuous elevation surfac...
double displayRatioElevationVsDistance
Display ratio of elevation vs distance units.
Encapsulates results of snapping a profile point.
bool isValid() const
Returns true if the result is a valid point.
QgsProfilePoint snappedPoint
Snapped point.
QList< QgsAbstractProfileSource * > profileSources() const
Returns a list of registered profile sources.
QgsAbstractTerrainProvider * terrainProvider()
Returns the project's terrain provider.
Encapsulates a QGIS project, including sets of map layers and their styles, layouts,...
const QgsProjectElevationProperties * elevationProperties() const
Returns the project's elevation properties, which contains the project's elevation related settings.
QgsCoordinateTransformContext transformContext
T lower() const
Returns the lower bound of the range.
T upper() const
Returns the upper bound of the range.
The class is used as a container of context for various read/write operations on other objects.
Contains information about the context of a rendering operation.
void setScaleFactor(double factor)
Sets the scaling factor for the render to convert painter units to physical sizes.
void setDevicePixelRatio(float ratio)
Sets the device pixel ratio.
QPainter * painter()
Returns the destination QPainter for the render operation.
QgsExpressionContext & expressionContext()
Gets the expression context.
void setMapToPixel(const QgsMapToPixel &mtp)
Sets the context's map to pixel transform, which transforms between map coordinates and device coordi...
static QgsRenderContext fromQPainter(QPainter *painter)
Creates a default render context given a pixel based QPainter destination.
A utility class for dynamic handling of changes to screen properties.
double screenDpi() const
Returns the current screen DPI for the screen that the parent widget appears on.
This class is a composition of two QSettings instances:
QVariant value(const QString &key, const QVariant &defaultValue=QVariant(), Section section=NoSection) const
Returns the value for setting key.
Container for all settings relating to text rendering.
void setColor(const QColor &color)
Sets the color that text will be rendered in.
static Q_INVOKABLE double fromUnitToUnitFactor(Qgis::DistanceUnit fromUnit, Qgis::DistanceUnit toUnit)
Returns the conversion factor between the specified distance units.
static Q_INVOKABLE QString toAbbreviatedString(Qgis::DistanceUnit unit)
Returns a translated abbreviation representing a distance unit.
Represents a vector layer which manages a vector based data sets.
void attributeValueChanged(QgsFeatureId fid, int idx, const QVariant &value)
Emitted whenever an attribute value change is done in the edit buffer.
void featureAdded(QgsFeatureId fid)
Emitted when a new feature has been added to the layer.
void featureDeleted(QgsFeatureId fid)
Emitted when a feature has been deleted.
void geometryChanged(QgsFeatureId fid, const QgsGeometry &geometry)
Emitted whenever a geometry change is done in the edit buffer.
Contains geos related utilities and functions.
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
#define BUILTIN_UNREACHABLE
bool qgsDoubleNear(double a, double b, double epsilon=4 *std::numeric_limits< double >::epsilon())
Compare two doubles (but allow some difference)
const QgsCoordinateReferenceSystem & crs