66 mRect = mCanvas->rect();
69 prepareGeometryChange();
70 setPos( mRect.topLeft() );
73 mCachedImages.clear();
81 mCachedImages.clear();
86 bool redrawResults(
const QString &sourceId )
88 auto it = mCachedImages.find( sourceId );
89 if ( it == mCachedImages.end() )
92 mCachedImages.erase( it );
97 QRectF boundingRect()
const override
102 QString distanceSuffix()
const
104 switch ( mDistanceUnit )
118 return QObject::tr(
"°" );
127 mDistanceUnit = unit;
134 if ( !mPlotArea.isNull() )
139 if ( !scene()->views().isEmpty() )
140 context.
setScaleFactor( scene()->views().at( 0 )->logicalDpiX() / 25.4 );
149 const QRectF area = plotArea();
150 if ( !area.contains( point.x(), point.y() ) )
153 const double distance = ( point.x() - area.left() ) / area.width() * (
xMaximum() -
xMinimum() ) * mXScaleFactor +
xMinimum() * mXScaleFactor;
160 if ( point.
distance() < xMinimum() * mXScaleFactor || point.
distance() > xMaximum()* mXScaleFactor || point.
elevation() < yMinimum() || point.
elevation() > yMaximum() )
163 const QRectF area = plotArea();
172 mPlotArea = plotArea;
177 const double pixelRatio = !scene()->views().empty() ? scene()->views().at( 0 )->devicePixelRatioF() : 1;
179 const QStringList sourceIds = mRenderer->sourceIds();
180 for (
const QString &source : sourceIds )
183 auto it = mCachedImages.constFind( source );
184 if ( it != mCachedImages.constEnd() )
190 plot = mRenderer->renderToImage( plotArea.width() * pixelRatio,
191 plotArea.height() * pixelRatio, xMinimum() * mXScaleFactor,
xMaximum() * mXScaleFactor,
yMinimum(),
yMaximum(), source, pixelRatio );
192 plot.setDevicePixelRatio( pixelRatio );
193 mCachedImages.insert( source, plot );
195 rc.
painter()->drawImage( QPointF( plotArea.left(),
196 plotArea.top() ), plot );
200 void paint( QPainter *painter )
override
203 if ( !mImage.isNull() )
205 painter->drawImage( QPointF( 0, 0 ), mImage );
209 const double pixelRatio = !scene()->views().empty() ? scene()->views().at( 0 )->devicePixelRatioF() : 1;
210 mImage = QImage( mRect.width() * pixelRatio, mRect.height() * pixelRatio, QImage::Format_ARGB32_Premultiplied );
211 mImage.setDevicePixelRatio( pixelRatio );
212 mImage.fill( Qt::transparent );
214 QPainter imagePainter( &mImage );
215 imagePainter.setRenderHint( QPainter::Antialiasing,
true );
219 const double mapUnitsPerPixel = (
xMaximum() -
xMinimum() ) * mXScaleFactor / plotArea().width();
229 painter->drawImage( QPointF( 0, 0 ), mImage );
234 double mXScaleFactor = 1.0;
242 QMap< QString, QImage > mCachedImages;
255 , mPlotItem( plotItem )
261 mRect = mCanvas->rect();
263 prepareGeometryChange();
264 setPos( mRect.topLeft() );
274 QRectF boundingRect()
const override
279 void paint( QPainter *painter )
override
281 const QgsPointXY crossHairPlotPoint = mPlotItem->plotPointToCanvasPoint( mPoint );
282 if ( crossHairPlotPoint.
isEmpty() )
286 painter->setBrush( Qt::NoBrush );
288 crossHairPen.setCosmetic(
true );
289 crossHairPen.setWidthF( 1 );
290 crossHairPen.setStyle( Qt::DashLine );
291 crossHairPen.setCapStyle( Qt::FlatCap );
292 const QPalette scenePalette = mPlotItem->scene()->palette();
293 QColor penColor = scenePalette.color( QPalette::ColorGroup::Active, QPalette::Text );
294 penColor.setAlpha( 150 );
295 crossHairPen.setColor( penColor );
296 painter->setPen( crossHairPen );
297 painter->drawLine( QPointF( mPlotItem->plotArea().left(), crossHairPlotPoint.
y() ), QPointF( mPlotItem->plotArea().right(), crossHairPlotPoint.
y() ) );
298 painter->drawLine( QPointF( crossHairPlotPoint.
x(), mPlotItem->plotArea().top() ), QPointF( crossHairPlotPoint.
x(), mPlotItem->plotArea().bottom() ) );
303 const QString xCoordinateText = mPlotItem->xAxis().numericFormat()->formatDouble( mPoint.distance() / mPlotItem->mXScaleFactor, numericContext )
304 + mPlotItem->distanceSuffix();
306 const QString yCoordinateText = mPlotItem->yAxis().numericFormat()->formatDouble( mPoint.elevation(), numericContext );
309 const QFontMetrics fm( font );
310 const double height = fm.capHeight();
311 const double xWidth = fm.horizontalAdvance( xCoordinateText );
312 const double yWidth = fm.horizontalAdvance( yCoordinateText );
313 const double textAxisMargin = fm.horizontalAdvance(
' ' );
315 QPointF xCoordOrigin;
316 QPointF yCoordOrigin;
318 if ( mPoint.distance() < ( mPlotItem->xMaximum() + mPlotItem->xMinimum() ) * 0.5 * mPlotItem->mXScaleFactor )
320 if ( mPoint.elevation() < ( mPlotItem->yMaximum() + mPlotItem->yMinimum() ) * 0.5 )
323 xCoordOrigin = QPointF( crossHairPlotPoint.
x() + textAxisMargin, mPlotItem->plotArea().top() + height + textAxisMargin );
325 yCoordOrigin = QPointF( mPlotItem->plotArea().right() - yWidth - textAxisMargin, crossHairPlotPoint.
y() - textAxisMargin );
330 xCoordOrigin = QPointF( crossHairPlotPoint.
x() + textAxisMargin, mPlotItem->plotArea().bottom() - textAxisMargin );
332 yCoordOrigin = QPointF( mPlotItem->plotArea().right() - yWidth - textAxisMargin, crossHairPlotPoint.
y() + height + textAxisMargin );
337 if ( mPoint.elevation() < ( mPlotItem->yMaximum() + mPlotItem->yMinimum() ) * 0.5 )
340 xCoordOrigin = QPointF( crossHairPlotPoint.
x() - xWidth - textAxisMargin, mPlotItem->plotArea().top() + height + textAxisMargin );
342 yCoordOrigin = QPointF( mPlotItem->plotArea().left() + textAxisMargin, crossHairPlotPoint.
y() - textAxisMargin );
347 xCoordOrigin = QPointF( crossHairPlotPoint.
x() - xWidth - textAxisMargin, mPlotItem->plotArea().bottom() - textAxisMargin );
349 yCoordOrigin = QPointF( mPlotItem->plotArea().left() + textAxisMargin, crossHairPlotPoint.
y() + height + textAxisMargin );
354 QColor backgroundColor = mPlotItem->chartBackgroundSymbol()->color();
355 backgroundColor.setAlpha( 220 );
356 painter->setBrush( QBrush( backgroundColor ) );
357 painter->setPen( Qt::NoPen );
358 painter->drawRect( QRectF( xCoordOrigin.x() - textAxisMargin + 1, xCoordOrigin.y() - textAxisMargin - height + 1, xWidth + 2 * textAxisMargin - 2, height + 2 * textAxisMargin - 2 ) );
359 painter->drawRect( QRectF( yCoordOrigin.x() - textAxisMargin + 1, yCoordOrigin.y() - textAxisMargin - height + 1, yWidth + 2 * textAxisMargin - 2, height + 2 * textAxisMargin - 2 ) );
361 painter->setBrush( Qt::NoBrush );
362 painter->setPen( scenePalette.color( QPalette::ColorGroup::Active, QPalette::Text ) );
364 painter->drawText( xCoordOrigin, xCoordinateText );
365 painter->drawText( yCoordOrigin, yCoordinateText );
373 QgsElevationProfilePlotItem *mPlotItem =
nullptr;
383 mPlotItem =
new QgsElevationProfilePlotItem(
this );
388 mCrossHairsItem =
new QgsElevationProfileCrossHairsItem(
this, mPlotItem );
389 mCrossHairsItem->setZValue( 100 );
390 mCrossHairsItem->hide();
393 mDeferredRegenerationTimer =
new QTimer(
this );
394 mDeferredRegenerationTimer->setSingleShot(
true );
395 mDeferredRegenerationTimer->stop();
396 connect( mDeferredRegenerationTimer, &QTimer::timeout,
this, &QgsElevationProfileCanvas::startDeferredRegeneration );
398 mDeferredRedrawTimer =
new QTimer(
this );
399 mDeferredRedrawTimer->setSingleShot(
true );
400 mDeferredRedrawTimer->stop();
401 connect( mDeferredRedrawTimer, &QTimer::timeout,
this, &QgsElevationProfileCanvas::startDeferredRedraw );
409 mPlotItem->setRenderer(
nullptr );
410 mCurrentJob->deleteLater();
411 mCurrentJob =
nullptr;
419 mPlotItem->setRenderer(
nullptr );
422 mCurrentJob->deleteLater();
423 mCurrentJob =
nullptr;
429 const double dxPercent = dx / mPlotItem->plotArea().width();
430 const double dyPercent = dy / mPlotItem->plotArea().height();
433 const double dxPlot = - dxPercent * ( mPlotItem->xMaximum() - mPlotItem->xMinimum() );
434 const double dyPlot = dyPercent * ( mPlotItem->yMaximum() - mPlotItem->yMinimum() );
437 mPlotItem->setXMinimum( mPlotItem->xMinimum() + dxPlot );
438 mPlotItem->setXMaximum( mPlotItem->xMaximum() + dxPlot );
439 mPlotItem->setYMinimum( mPlotItem->yMinimum() + dyPlot );
440 mPlotItem->setYMaximum( mPlotItem->yMaximum() + dyPlot );
444 mPlotItem->updatePlot();
450 if ( !mPlotItem->plotArea().contains( x, y ) )
453 const double newCenterX = mPlotItem->xMinimum() + ( x - mPlotItem->plotArea().left() ) / mPlotItem->plotArea().width() * ( mPlotItem->xMaximum() - mPlotItem->xMinimum() );
454 const double newCenterY = mPlotItem->yMinimum() + ( mPlotItem->plotArea().bottom() - y ) / mPlotItem->plotArea().height() * ( mPlotItem->yMaximum() - mPlotItem->yMinimum() );
456 const double dxPlot = newCenterX - ( mPlotItem->xMaximum() + mPlotItem->xMinimum() ) * 0.5;
457 const double dyPlot = newCenterY - ( mPlotItem->yMaximum() + mPlotItem->yMinimum() ) * 0.5;
460 mPlotItem->setXMinimum( mPlotItem->xMinimum() + dxPlot );
461 mPlotItem->setXMaximum( mPlotItem->xMaximum() + dxPlot );
462 mPlotItem->setYMinimum( mPlotItem->yMinimum() + dyPlot );
463 mPlotItem->setYMaximum( mPlotItem->yMaximum() + dyPlot );
467 mPlotItem->updatePlot();
479 const double toleranceInPixels = QFontMetrics( font() ).horizontalAdvance(
' ' );
480 const double xToleranceInPlotUnits = ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor / ( mPlotItem->plotArea().width() ) * toleranceInPixels;
481 const double yToleranceInPlotUnits = ( mPlotItem->yMaximum() - mPlotItem->yMinimum() ) / ( mPlotItem->plotArea().height() ) * toleranceInPixels;
489 / ( ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor / ( mPlotItem->plotArea().width() ) );
496 const double toleranceInPixels = QFontMetrics( font() ).horizontalAdvance(
' ' );
497 const double xToleranceInPlotUnits = ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor / ( mPlotItem->plotArea().width() ) * toleranceInPixels;
498 const double yToleranceInPlotUnits = ( mPlotItem->yMaximum() - mPlotItem->yMinimum() ) / ( mPlotItem->plotArea().height() ) * toleranceInPixels;
506 / ( ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor / ( mPlotItem->plotArea().width() ) );
513void QgsElevationProfileCanvas::setupLayerConnections(
QgsMapLayer *layer,
bool isDisconnect )
528 switch ( layer->
type() )
561void QgsElevationProfileCanvas::adjustRangeForAxisScaleLock(
double &xMinimum,
double &xMaximum,
double &yMinimum,
double &yMaximum )
const
564 const double horizontalScale = ( xMaximum - xMinimum ) / mPlotItem->plotArea().width();
565 const double verticalScale = ( yMaximum - yMinimum ) / mPlotItem->plotArea().height();
566 if ( horizontalScale > verticalScale )
568 const double height = horizontalScale * mPlotItem->plotArea().height();
569 const double deltaHeight = ( yMaximum - yMinimum ) - height;
570 yMinimum += deltaHeight / 2;
571 yMaximum -= deltaHeight / 2;
575 const double width = verticalScale * mPlotItem->plotArea().width();
576 const double deltaWidth = ( ( xMaximum - xMinimum ) - width );
577 xMinimum += deltaWidth / 2;
578 xMaximum -= deltaWidth / 2;
584 return mDistanceUnit;
589 mDistanceUnit = unit;
590 const double oldMin = mPlotItem->xMinimum() * mPlotItem->mXScaleFactor;
591 const double oldMax = mPlotItem->xMaximum() * mPlotItem->mXScaleFactor;
593 mPlotItem->setXAxisUnits( mDistanceUnit );
594 mPlotItem->setXMinimum( oldMin / mPlotItem->mXScaleFactor );
595 mPlotItem->setXMaximum( oldMax / mPlotItem->mXScaleFactor );
596 mPlotItem->updatePlot();
601 if ( !color.isValid() )
603 QPalette customPalette = qApp->palette();
604 const QColor baseColor = qApp->palette().color( QPalette::ColorRole::Base );
605 const QColor windowColor = qApp->palette().color( QPalette::ColorRole::Window );
606 customPalette.setColor( QPalette::ColorRole::Base, windowColor );
607 customPalette.setColor( QPalette::ColorRole::Window, baseColor );
608 setPalette( customPalette );
609 scene()->setPalette( customPalette );
614 const bool isDarkTheme = color.lightnessF() < 0.5;
615 QPalette customPalette = qApp->palette();
616 customPalette.setColor( QPalette::ColorRole::Window, color );
619 customPalette.setColor( QPalette::ColorRole::Text, QColor( 255, 255, 255 ) );
620 customPalette.setColor( QPalette::ColorRole::Base, color.lighter( 120 ) );
624 customPalette.setColor( QPalette::ColorRole::Text, QColor( 0, 0, 0 ) );
625 customPalette.setColor( QPalette::ColorRole::Base, color.darker( 120 ) );
628 setPalette( customPalette );
629 scene()->setPalette( customPalette );
632 updateChartFromPalette();
637 return mLockAxisScales;
642 mLockAxisScales = lock;
643 if ( mLockAxisScales )
645 double xMinimum = mPlotItem->xMinimum() * mPlotItem->mXScaleFactor;
646 double xMaximum = mPlotItem->xMaximum() * mPlotItem->mXScaleFactor;
647 double yMinimum = mPlotItem->yMinimum();
648 double yMaximum = mPlotItem->yMaximum();
649 adjustRangeForAxisScaleLock( xMinimum, xMaximum, yMinimum, yMaximum );
650 mPlotItem->setXMinimum( xMinimum / mPlotItem->mXScaleFactor );
651 mPlotItem->setXMaximum( xMaximum / mPlotItem->mXScaleFactor );
652 mPlotItem->setYMinimum( yMinimum );
653 mPlotItem->setYMaximum( yMaximum );
656 mPlotItem->updatePlot();
663 if ( !mCurrentJob || !mSnappingEnabled )
677 if ( mLockAxisScales )
680 const double currentWidth = ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor;
681 const double currentHeight = mPlotItem->yMaximum() - mPlotItem->yMinimum();
683 const double newWidth = currentWidth / xFactor;
684 const double newHeight = currentHeight / yFactor;
686 const double currentCenterX = ( mPlotItem->xMinimum() + mPlotItem->xMaximum() ) * 0.5 * mPlotItem->mXScaleFactor;
687 const double currentCenterY = ( mPlotItem->yMinimum() + mPlotItem->yMaximum() ) * 0.5;
689 double xMinimum = currentCenterX - newWidth * 0.5;
690 double xMaximum = currentCenterX + newWidth * 0.5;
691 double yMinimum = currentCenterY - newHeight * 0.5;
692 double yMaximum = currentCenterY + newHeight * 0.5;
693 if ( mLockAxisScales )
695 adjustRangeForAxisScaleLock( xMinimum, xMaximum, yMinimum, yMaximum );
698 mPlotItem->setXMinimum( xMinimum / mPlotItem->mXScaleFactor );
699 mPlotItem->setXMaximum( xMaximum / mPlotItem->mXScaleFactor );
700 mPlotItem->setYMinimum( yMinimum );
701 mPlotItem->setYMaximum( yMaximum );
704 mPlotItem->updatePlot();
710 const QRectF intersected = rect.intersected( mPlotItem->plotArea() );
712 double minX = ( intersected.left() - mPlotItem->plotArea().left() ) / mPlotItem->plotArea().width() * ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor + mPlotItem->xMinimum() * mPlotItem->mXScaleFactor;
713 double maxX = ( intersected.right() - mPlotItem->plotArea().left() ) / mPlotItem->plotArea().width() * ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor + mPlotItem->xMinimum() * mPlotItem->mXScaleFactor;
714 double minY = ( mPlotItem->plotArea().bottom() - intersected.bottom() ) / mPlotItem->plotArea().height() * ( mPlotItem->yMaximum() - mPlotItem->yMinimum() ) + mPlotItem->yMinimum();
715 double maxY = ( mPlotItem->plotArea().bottom() - intersected.top() ) / mPlotItem->plotArea().height() * ( mPlotItem->yMaximum() - mPlotItem->yMinimum() ) + mPlotItem->yMinimum();
717 if ( mLockAxisScales )
719 adjustRangeForAxisScaleLock( minX, maxX, minY, maxY );
722 mPlotItem->setXMinimum( minX / mPlotItem->mXScaleFactor );
723 mPlotItem->setXMaximum( maxX / mPlotItem->mXScaleFactor );
724 mPlotItem->setYMinimum( minY );
725 mPlotItem->setYMaximum( maxY );
728 mPlotItem->updatePlot();
736 double zoomFactor = settings.
value( QStringLiteral(
"qgis/zoom_factor" ), 2 ).toDouble();
737 bool reverseZoom = settings.
value( QStringLiteral(
"qgis/reverse_wheel_zoom" ),
false ).toBool();
738 bool zoomIn = reverseZoom ?
event->angleDelta().y() < 0 :
event->angleDelta().y() > 0;
741 zoomFactor = 1.0 + ( zoomFactor - 1.0 ) / 120.0 * std::fabs(
event->angleDelta().y() );
743 if (
event->modifiers() & Qt::ControlModifier )
746 zoomFactor = 1.0 + ( zoomFactor - 1.0 ) / 20.0;
750 double scaleFactor = ( zoomIn ? 1 / zoomFactor : zoomFactor );
752 QRectF viewportRect = mPlotItem->plotArea();
754 if ( viewportRect.contains(
event->position() ) )
757 const double oldCenterX = 0.5 * ( mPlotItem->xMaximum() + mPlotItem->xMinimum() );
758 const double oldCenterY = 0.5 * ( mPlotItem->yMaximum() + mPlotItem->yMinimum() );
760 const double eventPosX = (
event->position().x() - viewportRect.left() ) / viewportRect.width() * ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) + mPlotItem->xMinimum();
761 const double eventPosY = ( viewportRect.bottom() -
event->position().y() ) / viewportRect.height() * ( mPlotItem->yMaximum() - mPlotItem->yMinimum() ) + mPlotItem->yMinimum();
763 const double newCenterX = eventPosX + ( ( oldCenterX - eventPosX ) * scaleFactor );
764 const double newCenterY = eventPosY + ( ( oldCenterY - eventPosY ) * scaleFactor );
766 const double dxPlot = newCenterX - ( mPlotItem->xMaximum() + mPlotItem->xMinimum() ) * 0.5;
767 const double dyPlot = newCenterY - ( mPlotItem->yMaximum() + mPlotItem->yMinimum() ) * 0.5;
770 mPlotItem->setXMinimum( mPlotItem->xMinimum() + dxPlot );
771 mPlotItem->setXMaximum( mPlotItem->xMaximum() + dxPlot );
772 mPlotItem->setYMinimum( mPlotItem->yMinimum() + dyPlot );
773 mPlotItem->setYMaximum( mPlotItem->yMaximum() + dyPlot );
791 if ( e->isAccepted() )
793 mCrossHairsItem->hide();
798 if ( mCurrentJob && mSnappingEnabled && !plotPoint.
isEmpty() )
807 mCrossHairsItem->hide();
811 mCrossHairsItem->setPoint( plotPoint );
812 mCrossHairsItem->show();
819 return mPlotItem->plotArea();
829 mPlotItem->setRenderer(
nullptr );
831 mCurrentJob->deleteLater();
832 mCurrentJob =
nullptr;
845 const QList< QgsMapLayer * > layersToGenerate =
layers();
846 QList< QgsAbstractProfileSource * > sources;
847 sources.reserve( layersToGenerate .size() );
851 sources.append( source );
859 generationContext.
setMaximumErrorMapUnits( MAX_ERROR_PIXELS * ( mProfileCurve->length() ) / mPlotItem->plotArea().width() );
864 mPlotItem->setRenderer( mCurrentJob );
871 mZoomFullWhenJobFinished =
true;
874void QgsElevationProfileCanvas::generationFinished()
881 if ( mZoomFullWhenJobFinished )
884 mZoomFullWhenJobFinished =
false;
893 mPlotItem->updatePlot();
896 if ( mForceRegenerationAfterCurrentJobCompletes )
898 mForceRegenerationAfterCurrentJobCompletes =
false;
900 scheduleDeferredRegeneration();
904void QgsElevationProfileCanvas::onLayerProfileGenerationPropertyChanged()
907 if ( !mCurrentJob || mCurrentJob->
isActive() )
914 if (
QgsMapLayer *layer = qobject_cast< QgsMapLayer * >( properties->parent() ) )
919 scheduleDeferredRegeneration();
924void QgsElevationProfileCanvas::onLayerProfileRendererPropertyChanged()
927 if ( !mCurrentJob || mCurrentJob->
isActive() )
934 if (
QgsMapLayer *layer = qobject_cast< QgsMapLayer * >( properties->parent() ) )
940 if ( mPlotItem->redrawResults( layer->
id() ) )
941 scheduleDeferredRedraw();
945void QgsElevationProfileCanvas::regenerateResultsForLayer()
947 if (
QgsMapLayer *layer = qobject_cast< QgsMapLayer * >( sender() ) )
952 scheduleDeferredRegeneration();
957void QgsElevationProfileCanvas::scheduleDeferredRegeneration()
959 if ( !mDeferredRegenerationScheduled )
961 mDeferredRegenerationTimer->start( 1 );
962 mDeferredRegenerationScheduled =
true;
966void QgsElevationProfileCanvas::scheduleDeferredRedraw()
968 if ( !mDeferredRedrawScheduled )
970 mDeferredRedrawTimer->start( 1 );
971 mDeferredRedrawScheduled =
true;
975void QgsElevationProfileCanvas::startDeferredRegeneration()
977 if ( mCurrentJob && !mCurrentJob->
isActive() )
982 else if ( mCurrentJob )
984 mForceRegenerationAfterCurrentJobCompletes =
true;
987 mDeferredRegenerationScheduled =
false;
990void QgsElevationProfileCanvas::startDeferredRedraw()
993 mDeferredRedrawScheduled =
false;
996void QgsElevationProfileCanvas::refineResults()
1002 const double plotDistanceRange = ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor;
1003 const double plotElevationRange = mPlotItem->yMaximum() - mPlotItem->yMinimum();
1004 const double plotDistanceUnitsPerPixel = plotDistanceRange / mPlotItem->plotArea().width();
1008 const double targetMaxErrorInMapUnits = MAX_ERROR_PIXELS * plotDistanceUnitsPerPixel;
1009 const double factor = std::pow( 10.0, 1 - std::ceil( std::log10( std::fabs( targetMaxErrorInMapUnits ) ) ) );
1010 const double roundedErrorInMapUnits = std::floor( targetMaxErrorInMapUnits * factor ) / factor;
1018 mPlotItem->xMaximum() * mPlotItem->mXScaleFactor + plotDistanceRange * 0.05 ) );
1021 mPlotItem->yMaximum() + plotElevationRange * 0.05 ) );
1024 scheduleDeferredRegeneration();
1027void QgsElevationProfileCanvas::updateChartFromPalette()
1029 const QPalette chartPalette = palette();
1030 setBackgroundBrush( QBrush( chartPalette.color( QPalette::ColorRole::Base ) ) );
1033 textFormat.
setColor( chartPalette.color( QPalette::ColorGroup::Active, QPalette::Text ) );
1034 mPlotItem->xAxis().setTextFormat( textFormat );
1035 mPlotItem->yAxis().setTextFormat( textFormat );
1038 std::unique_ptr< QgsFillSymbol > chartFill( mPlotItem->chartBackgroundSymbol()->clone() );
1039 chartFill->setColor( chartPalette.color( QPalette::ColorGroup::Active, QPalette::ColorRole::Window ) );
1040 mPlotItem->setChartBackgroundSymbol( chartFill.release() );
1043 std::unique_ptr< QgsFillSymbol > chartBorder( mPlotItem->chartBorderSymbol()->clone() );
1044 chartBorder->setColor( chartPalette.color( QPalette::ColorGroup::Active, QPalette::ColorRole::Text ) );
1045 mPlotItem->setChartBorderSymbol( chartBorder.release() );
1048 std::unique_ptr< QgsLineSymbol > chartMajorSymbol( mPlotItem->xAxis().gridMajorSymbol()->clone() );
1049 QColor
c = chartPalette.color( QPalette::ColorGroup::Active, QPalette::ColorRole::Text );
1051 chartMajorSymbol->setColor(
c );
1052 mPlotItem->xAxis().setGridMajorSymbol( chartMajorSymbol->clone() );
1053 mPlotItem->yAxis().setGridMajorSymbol( chartMajorSymbol.release() );
1056 std::unique_ptr< QgsLineSymbol > chartMinorSymbol( mPlotItem->xAxis().gridMinorSymbol()->clone() );
1057 QColor
c = chartPalette.color( QPalette::ColorGroup::Active, QPalette::ColorRole::Text );
1059 chartMinorSymbol->setColor(
c );
1060 mPlotItem->xAxis().setGridMinorSymbol( chartMinorSymbol->clone() );
1061 mPlotItem->yAxis().setGridMinorSymbol( chartMinorSymbol.release() );
1063 mPlotItem->updatePlot();
1068 if ( !mPlotItem->plotArea().contains( point.x(), point.y() ) )
1071 return mPlotItem->canvasPointToPlotPoint( point );
1076 return mPlotItem->plotPointToCanvasPoint( point );
1082 mPlotItem->mProject = project;
1092 mProfileCurve.reset( curve );
1097 return mProfileCurve.get();
1112 for (
QgsMapLayer *layer : std::as_const( mLayers ) )
1114 setupLayerConnections( layer,
true );
1118 auto filteredList =
layers;
1119 filteredList.erase( std::remove_if( filteredList.begin(), filteredList.end(),
1122 return !layer || !layer->isValid();
1123 } ), filteredList.end() );
1125 mLayers = _qgis_listRawToQPointer( filteredList );
1126 for (
QgsMapLayer *layer : std::as_const( mLayers ) )
1128 setupLayerConnections( layer,
false );
1134 return _qgis_listQPointerToRaw( mLayers );
1141 if ( mLockAxisScales )
1143 double xMinimum = mPlotItem->xMinimum();
1144 double xMaximum = mPlotItem->xMaximum();
1145 double yMinimum = mPlotItem->yMinimum();
1146 double yMaximum = mPlotItem->yMaximum();
1147 adjustRangeForAxisScaleLock( xMinimum, xMaximum, yMinimum, yMaximum );
1148 mPlotItem->setXMinimum( xMinimum );
1149 mPlotItem->setXMaximum( xMaximum );
1150 mPlotItem->setYMinimum( yMinimum );
1151 mPlotItem->setYMaximum( yMaximum );
1154 mPlotItem->updateRect();
1155 mCrossHairsItem->updateRect();
1160 QgsPlotCanvas::paintEvent(
event );
1162 if ( !mFirstDrawOccurred )
1165 mFirstDrawOccurred =
true;
1166 mPlotItem->updateRect();
1167 mCrossHairsItem->updateRect();
1173 if ( !mPlotItem->plotArea().contains( point.
x(), point.
y() ) )
1176 if ( !mProfileCurve )
1179 const double dx = point.
x() - mPlotItem->plotArea().left();
1181 const double distanceAlongPlotPercent = dx / mPlotItem->plotArea().width();
1182 double distanceAlongCurveLength = distanceAlongPlotPercent * ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor + mPlotItem->xMinimum() * mPlotItem->mXScaleFactor;
1184 std::unique_ptr< QgsPoint > mapXyPoint( mProfileCurve->interpolatePoint( distanceAlongCurveLength ) );
1188 const double mapZ = ( mPlotItem->yMaximum() - mPlotItem->yMinimum() ) / ( mPlotItem->plotArea().height() ) * ( mPlotItem->plotArea().bottom() - point.
y() ) + mPlotItem->yMinimum();
1190 return QgsPoint( mapXyPoint->x(), mapXyPoint->y(), mapZ );
1195 if ( !mProfileCurve )
1200 const double distanceAlongCurve =
geos.lineLocatePoint( point, &error );
1202 const double distanceAlongCurveOnPlot = distanceAlongCurve - mPlotItem->xMinimum() * mPlotItem->mXScaleFactor;
1203 const double distanceAlongCurvePercent = distanceAlongCurveOnPlot / ( ( mPlotItem->xMaximum() - mPlotItem->xMinimum() ) * mPlotItem->mXScaleFactor );
1204 const double distanceAlongPlotRect = distanceAlongCurvePercent * mPlotItem->plotArea().width();
1206 const double canvasX = mPlotItem->plotArea().left() + distanceAlongPlotRect;
1209 if ( std::isnan( point.
z() ) || point.
z() < mPlotItem->yMinimum() )
1211 canvasY = mPlotItem->plotArea().top();
1213 else if ( point.
z() > mPlotItem->yMaximum() )
1215 canvasY = mPlotItem->plotArea().bottom();
1219 const double yPercent = ( point.
z() - mPlotItem->yMinimum() ) / ( mPlotItem->yMaximum() - mPlotItem->yMinimum() );
1220 canvasY = mPlotItem->plotArea().bottom() - mPlotItem->plotArea().height() * yPercent;
1233 double yMinimum = 0;
1234 double yMaximum = 0;
1245 yMinimum = zRange.
lower() - 5;
1246 yMaximum = zRange.
lower() + 5;
1251 const double margin = ( zRange.
upper() - zRange.
lower() ) * 0.05;
1252 yMinimum = zRange.
lower() - margin;
1253 yMaximum = zRange.
upper() + margin;
1257 double xMinimum = 0;
1259 double xMaximum = profileLength * 1.02;
1261 if ( mLockAxisScales )
1263 adjustRangeForAxisScaleLock( xMinimum, xMaximum, yMinimum, yMaximum );
1266 mPlotItem->setXMinimum( xMinimum / mPlotItem->mXScaleFactor );
1267 mPlotItem->setXMaximum( xMaximum / mPlotItem->mXScaleFactor );
1268 mPlotItem->setYMinimum( yMinimum );
1269 mPlotItem->setYMaximum( yMaximum );
1272 mPlotItem->updatePlot();
1278 if ( mLockAxisScales )
1280 adjustRangeForAxisScaleLock( minimumDistance, maximumDistance, minimumElevation, maximumElevation );
1283 mPlotItem->setYMinimum( minimumElevation );
1284 mPlotItem->setYMaximum( maximumElevation );
1285 mPlotItem->setXMinimum( minimumDistance / mPlotItem->mXScaleFactor );
1286 mPlotItem->setXMaximum( maximumDistance / mPlotItem->mXScaleFactor );
1288 mPlotItem->updatePlot();
1294 return QgsDoubleRange( mPlotItem->xMinimum() * mPlotItem->mXScaleFactor, mPlotItem->xMaximum() * mPlotItem->mXScaleFactor );
1299 return QgsDoubleRange( mPlotItem->yMinimum(), mPlotItem->yMaximum() );
1308class QgsElevationProfilePlot :
public Qgs2DPlot
1313 : mRenderer( renderer )
1322 rc.
painter()->translate( plotArea.left(), plotArea.top() );
1323 mRenderer->render( rc, plotArea.width(), plotArea.height(), xMinimum() * mXScale,
xMaximum() * mXScale,
yMinimum(),
yMaximum() );
1324 rc.
painter()->translate( -plotArea.left(), -plotArea.top() );
1343 QgsElevationProfilePlot profilePlot( mCurrentJob );
1347 QDomElement elem = doc.createElement( QStringLiteral(
"plot" ) );
1349 plotSettings.
writeXml( elem, doc, rwContext );
1350 profilePlot.readXml( elem, rwContext );
1352 profilePlot.mXScale = mPlotItem->mXScaleFactor;
1353 profilePlot.xAxis().setLabelSuffix( mPlotItem->xAxis().labelSuffix() );
1354 profilePlot.xAxis().setLabelSuffixPlacement( mPlotItem->xAxis().labelSuffixPlacement() );
1356 profilePlot.setSize( QSizeF( width, height ) );
1357 profilePlot.render( context );
1367 return mCurrentJob->
identify( plotPoint, identifyContext() );
1378 double distance1 = topLeftPlotPoint.
distance();
1379 double distance2 = bottomRightPlotPoint.
distance();
1380 if ( distance2 < distance1 )
1381 std::swap( distance1, distance2 );
1383 double elevation1 = topLeftPlotPoint.
elevation();
1384 double elevation2 = bottomRightPlotPoint.
elevation();
1385 if ( elevation2 < elevation1 )
1386 std::swap( elevation1, elevation2 );
1394 mPlotItem->setRenderer(
nullptr );
1395 mPlotItem->updatePlot();
1400 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.
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.
QString id() const
Returns the layer's unique ID, which is used to access this layer from QgsProject.
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.
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