Make the original layer CRS of label features accessible via

QgsLabelFeature
qgis · Feb 23, 2021 · 07a21af · 07a21af
1 parent 493329c
commit 07a21af
Show file tree

Hide file tree

Showing 3 changed files with 29 additions and 0 deletions.
diff --git a/src/core/labeling/qgslabelfeature.cpp b/src/core/labeling/qgslabelfeature.cpp
@@ -110,6 +110,16 @@ void QgsLabelFeature::setObstacleSettings( const QgsLabelObstacleSettings &setti
   mObstacleSettings = settings;
 }
 
+QgsCoordinateReferenceSystem QgsLabelFeature::originalFeatureCrs() const
+{
+  return mOriginalFeatureCrs;
+}
+
+void QgsLabelFeature::setOriginalFeatureCrs( const QgsCoordinateReferenceSystem &originalFeatureCrs )
+{
+  mOriginalFeatureCrs = originalFeatureCrs;
+}
+
 void QgsLabelFeature::setAnchorPosition( const QgsPointXY &anchorPosition )
 {
   mAnchorPosition = anchorPosition;

diff --git a/src/core/labeling/qgslabelfeature.h b/src/core/labeling/qgslabelfeature.h
@@ -514,6 +514,22 @@ class CORE_EXPORT QgsLabelFeature
      */
     void setObstacleSettings( const QgsLabelObstacleSettings &settings );
 
+    /**
+     * Returns the original layer CRS of the feature associated with the label.
+     *
+     * \see setOriginalFeatureCrs()
+     * \since QGIS 3.20
+     */
+    QgsCoordinateReferenceSystem originalFeatureCrs() const;
+
+    /**
+     * Sets the original layer \a crs of the feature associated with the label.
+     *
+     * \see originalFeatureCrs()
+     * \since QGIS 3.20
+     */
+    void setOriginalFeatureCrs( const QgsCoordinateReferenceSystem &crs );
+
   protected:
     //! Pointer to PAL layer (assigned when registered to PAL)
     pal::Layer *mLayer = nullptr;
@@ -593,6 +609,8 @@ class CORE_EXPORT QgsLabelFeature
 
     double mLineAnchorPercent = 0.5;
     QgsLabelLineSettings::AnchorType mLineAnchorType = QgsLabelLineSettings::AnchorType::HintOnly;
+
+    QgsCoordinateReferenceSystem mOriginalFeatureCrs;
 };
 
 #endif // QGSLABELFEATURE_H
diff --git a/src/core/labeling/qgspallabeling.cpp b/src/core/labeling/qgspallabeling.cpp
@@ -2497,6 +2497,7 @@ void QgsPalLayerSettings::registerFeature( const QgsFeature &f, QgsRenderContext
   ( *labelFeature )->setLineAnchorPercent( lineSettings.lineAnchorPercent() );
   ( *labelFeature )->setLineAnchorType( lineSettings.anchorType() );
   ( *labelFeature )->setLabelAllParts( labelAll );
+  ( *labelFeature )->setOriginalFeatureCrs( context.coordinateTransform().sourceCrs() );
   if ( geom.type() == QgsWkbTypes::PointGeometry && !obstacleGeometry.isNull() )
   {
     //register symbol size