Do not store context in layer (but in provider) ...

... also use transform context in raster projector and deprecate setCrs without context
qgis · Apr 8, 2019 · b3a448a2b282dec38121afe803c2321e2cba1fe8 · b3a448a
1 parent 7f52e29
commit b3a448a2b282dec38121afe803c2321e2cba1fe8
diff --git a/python/core/auto_generated/mesh/qgsmeshlayer.sip.in b/python/core/auto_generated/mesh/qgsmeshlayer.sip.in
@@ -202,9 +202,9 @@ Interpolates the value on the given point from given dataset.
 
     virtual void setTransformContext( const QgsCoordinateTransformContext &transformContext );
 %Docstring
-Triggered when the coordinate transform context has changed ``transformContext``
+Sets the coordinate transform context to ``transformContext``.
 
-.. versionadded:: 3.10
+.. versionadded:: 3.8
 %End
 
 

diff --git a/python/core/auto_generated/qgsdataprovider.sip.in b/python/core/auto_generated/qgsdataprovider.sip.in
@@ -387,26 +387,7 @@ Returns ``True`` if metadata was successfully written to the data provider.
 .. versionadded:: 3.0
 %End
 
-    QgsCoordinateTransformContext transformContext() const;
-%Docstring
-Returns data provider coordinate transform context
-
-.. seealso:: :py:func:`setTransformContext`
 
-.. versionadded:: 3.10
-%End
-
-    virtual void setTransformContext( const QgsCoordinateTransformContext &transformContext );
-%Docstring
-Sets data coordinate transform context to ``transformContext``
-
-The default implementation is a simple setter, subclasses may override to perform
-additional actions required by a change of coordinate transform context.
-
-.. seealso:: :py:func:`transformContext`
-
-.. versionadded:: 3.10
-%End
 
   signals:
 

diff --git a/python/core/auto_generated/qgsvectorlayer.sip.in b/python/core/auto_generated/qgsvectorlayer.sip.in
@@ -2346,9 +2346,9 @@ rollBack().
 
     virtual void setTransformContext( const QgsCoordinateTransformContext &transformContext );
 %Docstring
-Triggered when the coordinate transform context has changed ``transformContext``
+Sets the coordinate transform context to ``transformContext``
 
-.. versionadded:: 3.10
+.. versionadded:: 3.8
 %End
 
   signals:

diff --git a/python/core/auto_generated/raster/qgsrasterlayer.sip.in b/python/core/auto_generated/raster/qgsrasterlayer.sip.in
@@ -386,9 +386,9 @@ Writes the symbology of the layer into the document provided in SLD 1.0.0 format
 
     virtual void setTransformContext( const QgsCoordinateTransformContext &transformContext );
 %Docstring
-Triggered when the coordinate transform context has changed ``transformContext``
+Sets the coordinate transform context to ``transformContext``
 
-.. versionadded:: 3.10
+.. versionadded:: 3.8
 %End
 
   protected:

diff --git a/python/core/auto_generated/raster/qgsrasterprojector.sip.in b/python/core/auto_generated/raster/qgsrasterprojector.sip.in
@@ -46,10 +46,20 @@ which are used to calculate affine transformation matrices.
     virtual Qgis::DataType dataType( int bandNo ) const;
 
 
-    void setCrs( const QgsCoordinateReferenceSystem &srcCRS, const QgsCoordinateReferenceSystem &destCRS,
-                 int srcDatumTransform = -1, int destDatumTransform = -1 );
+ void setCrs( const QgsCoordinateReferenceSystem &srcCRS, const QgsCoordinateReferenceSystem &destCRS,
+                                   int srcDatumTransform = -1, int destDatumTransform = -1 ) /Deprecated/;
 %Docstring
 Sets the source and destination CRS
+
+.. deprecated:: since QGIS 3.8, use transformContext version instead
+%End
+
+    void setCrs( const QgsCoordinateReferenceSystem &srcCRS, const QgsCoordinateReferenceSystem &destCRS,
+                 QgsCoordinateTransformContext transformContext );
+%Docstring
+Sets source CRS to ``srcCRS`` and destination CRS to ``destCRS`` and the transformation context to ``transformContext``
+
+.. versionadded:: 3.8
 %End
 
     QgsCoordinateReferenceSystem sourceCrs() const;

diff --git a/src/core/mesh/qgsmeshlayer.cpp b/src/core/mesh/qgsmeshlayer.cpp
@@ -41,7 +41,6 @@ QgsMeshLayer::QgsMeshLayer( const QString &meshLayerPath,
                             const QString &providerKey,
                             const QgsMeshLayer::LayerOptions &options )
   : QgsMapLayer( QgsMapLayerType::MeshLayer, baseName, meshLayerPath )
-  , mOptions( options )
 {
   setProviderType( providerKey );
   // if we’re given a provider type, try to create and bind one to this layer
@@ -89,7 +88,12 @@ const QgsMeshDataProvider *QgsMeshLayer::dataProvider() const
 
 QgsMeshLayer *QgsMeshLayer::clone() const
 {
-  QgsMeshLayer *layer = new QgsMeshLayer( source(), name(), mProviderKey, mOptions );
+  QgsMeshLayer::LayerOptions options;
+  if ( mDataProvider )
+  {
+    options.transformContext = mDataProvider->transformContext();
+  }
+  QgsMeshLayer *layer = new QgsMeshLayer( source(), name(), mProviderKey,  options );
   QgsMapLayer::clone( layer );
   return layer;
 }

diff --git a/src/core/mesh/qgsmeshlayer.h b/src/core/mesh/qgsmeshlayer.h
@@ -231,9 +231,9 @@ class CORE_EXPORT QgsMeshLayer : public QgsMapLayer
   public slots:
 
     /**
-     * Triggered when the coordinate transform context has changed \a transformContext
+     * Sets the coordinate transform context to \a transformContext.
      *
-     * \since QGIS 3.10
+     * \since QGIS 3.8
      */
     virtual void setTransformContext( const QgsCoordinateTransformContext &transformContext ) override;
 
@@ -306,8 +306,6 @@ class CORE_EXPORT QgsMeshLayer : public QgsMapLayer
     //! Time format configuration
     QgsMeshTimeSettings mTimeSettings;
 
-    //! Layer options
-    QgsMeshLayer::LayerOptions mOptions;
 };
 
 #endif //QGSMESHLAYER_H
diff --git a/src/core/qgsdataprovider.h b/src/core/qgsdataprovider.h
@@ -527,9 +527,10 @@ class CORE_EXPORT QgsDataProvider : public QObject
      *
      * \see setTransformContext()
      *
-     * \since QGIS 3.10
+     * \since QGIS 3.8
+     * \note not available in Python bindings
      */
-    QgsCoordinateTransformContext transformContext() const;
+    QgsCoordinateTransformContext transformContext() const SIP_SKIP;
 
     /**
      * Sets data coordinate transform context to \a transformContext
@@ -539,9 +540,10 @@ class CORE_EXPORT QgsDataProvider : public QObject
      *
      * \see transformContext()
      *
-     * \since QGIS 3.10
+     * \since QGIS 3.8
+     * \note not available in Python bindings
      */
-    virtual void setTransformContext( const QgsCoordinateTransformContext &transformContext );
+    virtual void setTransformContext( const QgsCoordinateTransformContext &transformContext ) SIP_SKIP;
 
   signals:
 

diff --git a/src/core/qgsvectorlayer.cpp b/src/core/qgsvectorlayer.cpp
@@ -147,7 +147,6 @@ QgsVectorLayer::QgsVectorLayer( const QString &vectorLayerPath,
   , mAuxiliaryLayer( nullptr )
   , mAuxiliaryLayerKey( QString() )
   , mReadExtentFromXml( options.readExtentFromXml )
-  , mOptions( options )
 {
   setProviderType( providerKey );
 
@@ -208,7 +207,12 @@ QgsVectorLayer::~QgsVectorLayer()
 
 QgsVectorLayer *QgsVectorLayer::clone() const
 {
-  QgsVectorLayer *layer = new QgsVectorLayer( source(), name(), mProviderKey, mOptions );
+  QgsVectorLayer::LayerOptions options;
+  if ( mDataProvider )
+  {
+    options.transformContext = mDataProvider->transformContext();
+  }
+  QgsVectorLayer *layer = new QgsVectorLayer( source(), name(), mProviderKey, options );
   QgsMapLayer::clone( layer );
 
   QList<QgsVectorLayerJoinInfo> joins = vectorJoins();

diff --git a/src/core/qgsvectorlayer.h b/src/core/qgsvectorlayer.h
@@ -2161,9 +2161,9 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer, public QgsExpressionConte
     bool startEditing();
 
     /**
-     * Triggered when the coordinate transform context has changed \a transformContext
+     * Sets the coordinate transform context to \a transformContext
      *
-     * \since QGIS 3.10
+     * \since QGIS 3.8
      */
     virtual void setTransformContext( const QgsCoordinateTransformContext &transformContext ) override;
 
@@ -2593,8 +2593,6 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer, public QgsExpressionConte
 
     bool mAllowCommit = true;
 
-    QgsVectorLayer::LayerOptions mOptions;
-
     friend class QgsVectorLayerFeatureSource;
 };
 

diff --git a/src/core/raster/qgsrasterlayer.cpp b/src/core/raster/qgsrasterlayer.cpp
@@ -137,7 +137,12 @@ QgsRasterLayer::~QgsRasterLayer()
 
 QgsRasterLayer *QgsRasterLayer::clone() const
 {
-  QgsRasterLayer *layer = new QgsRasterLayer( source(), name(), mProviderKey );
+  QgsRasterLayer::LayerOptions options;
+  if ( mDataProvider )
+  {
+    options.transformContext = mDataProvider->transformContext();
+  }
+  QgsRasterLayer *layer = new QgsRasterLayer( source(), name(), mProviderKey, options );
   QgsMapLayer::clone( layer );
 
   // do not clone data provider which is the first element in pipe

diff --git a/src/core/raster/qgsrasterlayer.h b/src/core/raster/qgsrasterlayer.h
@@ -185,7 +185,7 @@ class CORE_EXPORT QgsRasterLayer : public QgsMapLayer
 
       /**
        * Coordinate transform context
-       * \since QGIS 3.10
+       * \since QGIS 3.8
        */
       QgsCoordinateTransformContext transformContext = QgsCoordinateTransformContext();
 
@@ -439,9 +439,9 @@ class CORE_EXPORT QgsRasterLayer : public QgsMapLayer
     void showStatusMessage( const QString &message );
 
     /**
-     * Triggered when the coordinate transform context has changed \a transformContext
+     * Sets the coordinate transform context to \a transformContext
      *
-     * \since QGIS 3.10
+     * \since QGIS 3.8
      */
     virtual void setTransformContext( const QgsCoordinateTransformContext &transformContext ) override;
 

diff --git a/src/core/raster/qgsrasterprojector.cpp b/src/core/raster/qgsrasterprojector.cpp
@@ -39,6 +39,7 @@ QgsRasterProjector *QgsRasterProjector::clone() const
   projector->mSrcDatumTransform = mSrcDatumTransform;
   projector->mDestDatumTransform = mDestDatumTransform;
   projector->mPrecision = mPrecision;
+  projector->mTransformContext = mTransformContext;
   return projector;
 }
 
@@ -60,12 +61,24 @@ Qgis::DataType QgsRasterProjector::dataType( int bandNo ) const
 /// @cond PRIVATE
 
 
-void QgsRasterProjector::setCrs( const QgsCoordinateReferenceSystem &srcCRS, const QgsCoordinateReferenceSystem &destCRS, int srcDatumTransform, int destDatumTransform )
+void QgsRasterProjector::setCrs( const QgsCoordinateReferenceSystem &srcCRS,
+                                 const QgsCoordinateReferenceSystem &destCRS,
+                                 int srcDatumTransform,
+                                 int destDatumTransform )
 {
   mSrcCRS = srcCRS;
   mDestCRS = destCRS;
   mSrcDatumTransform = srcDatumTransform;
   mDestDatumTransform = destDatumTransform;
+  mTransformContext = QgsCoordinateTransformContext();
+  mTransformContext.addSourceDestinationDatumTransform( srcCRS, destCRS, srcDatumTransform, destDatumTransform );
+}
+
+void QgsRasterProjector::setCrs( const QgsCoordinateReferenceSystem &srcCRS, const QgsCoordinateReferenceSystem &destCRS, QgsCoordinateTransformContext transformContext )
+{
+  mSrcCRS = srcCRS;
+  mDestCRS = destCRS;
+  mTransformContext = transformContext;
 }
 
 
@@ -747,13 +760,23 @@ QgsRasterBlock *QgsRasterProjector::block( int bandNo, QgsRectangle  const &exte
   if ( feedback && feedback->isCanceled() )
     return new QgsRasterBlock();
 
+  // TODO: check if the last condition always apply to context
   if ( ! mSrcCRS.isValid() || ! mDestCRS.isValid() || mSrcCRS == mDestCRS )
   {
     QgsDebugMsgLevel( QStringLiteral( "No projection necessary" ), 4 );
     return mInput->block( bandNo, extent, width, height, feedback );
   }
 
-  QgsCoordinateTransform inverseCt( mDestCRS, mSrcCRS, mDestDatumTransform, mSrcDatumTransform );
+  QgsCoordinateTransform inverseCt;
+
+  if ( mSrcDatumTransform != -1 && mDestDatumTransform != -1 )
+  {
+    inverseCt = QgsCoordinateTransform( mDestCRS, mSrcCRS, mDestDatumTransform, mSrcDatumTransform );
+  }
+  else
+  {
+    inverseCt = QgsCoordinateTransform( mDestCRS, mSrcCRS, mTransformContext );
+  }
 
   ProjectorData pd( extent, width, height, mInput, inverseCt, mPrecision );
 
@@ -774,7 +797,7 @@ QgsRasterBlock *QgsRasterProjector::block( int bandNo, QgsRectangle  const &exte
     return new QgsRasterBlock();
   }
 
-  qgssize pixelSize = QgsRasterBlock::typeSize( mInput->dataType( bandNo ) );
+  qgssize pixelSize = static_cast<qgssize>( QgsRasterBlock::typeSize( mInput->dataType( bandNo ) ) );
 
   std::unique_ptr< QgsRasterBlock > outputBlock( new QgsRasterBlock( inputBlock->dataType(), width, height ) );
   if ( inputBlock->hasNoDataValue() )
@@ -814,7 +837,7 @@ QgsRasterBlock *QgsRasterProjector::block( int bandNo, QgsRectangle  const &exte
       bool inside = pd.srcRowCol( i, j, &srcRow, &srcCol );
       if ( !inside ) continue; // we have everything set to no data
 
-      qgssize srcIndex = static_cast< qgssize >( srcRow ) * pd.srcCols() + srcCol;
+      qgssize srcIndex = static_cast< qgssize >( srcRow * pd.srcCols() + srcCol );
 
       // isNoData() may be slow so we check doNoData first
       if ( doNoData && inputBlock->isNoData( srcRow, srcCol ) )
@@ -823,7 +846,7 @@ QgsRasterBlock *QgsRasterProjector::block( int bandNo, QgsRectangle  const &exte
         continue;
       }
 
-      qgssize destIndex = static_cast< qgssize >( i ) * width + j;
+      qgssize destIndex = static_cast< qgssize >( i * width + j );
       char *srcBits = inputBlock->bits( srcIndex );
       char *destBits = outputBlock->bits( destIndex );
       if ( !srcBits )
@@ -851,8 +874,15 @@ bool QgsRasterProjector::destExtentSize( const QgsRectangle &srcExtent, int srcX
   {
     return false;
   }
-  QgsCoordinateTransform ct( mSrcCRS, mDestCRS, mSrcDatumTransform, mDestDatumTransform );
-
+  QgsCoordinateTransform ct;
+  if ( mSrcDatumTransform != -1 && mDestDatumTransform != -1 )
+  {
+    ct = QgsCoordinateTransform( mSrcCRS, mDestCRS, mSrcDatumTransform, mDestDatumTransform );
+  }
+  else
+  {
+    ct = QgsCoordinateTransform( mSrcCRS, mDestCRS, mTransformContext );
+  }
   return extentSize( ct, srcExtent, srcXSize, srcYSize, destExtent, destXSize, destYSize );
 }
 

diff --git a/src/core/raster/qgsrasterprojector.h b/src/core/raster/qgsrasterprojector.h
@@ -69,9 +69,19 @@ class CORE_EXPORT QgsRasterProjector : public QgsRasterInterface
 
     Qgis::DataType dataType( int bandNo ) const override;
 
-    //! Sets the source and destination CRS
+    /**
+     * Sets the source and destination CRS
+     * \deprecated since QGIS 3.8, use transformContext version instead
+     */
+    Q_DECL_DEPRECATED void setCrs( const QgsCoordinateReferenceSystem &srcCRS, const QgsCoordinateReferenceSystem &destCRS,
+                                   int srcDatumTransform = -1, int destDatumTransform = -1 ) SIP_DEPRECATED;
+
+    /**
+     * Sets source CRS to \a srcCRS and destination CRS to \a destCRS and the transformation context to \a transformContext
+     * \since QGIS 3.8
+     */
     void setCrs( const QgsCoordinateReferenceSystem &srcCRS, const QgsCoordinateReferenceSystem &destCRS,
-                 int srcDatumTransform = -1, int destDatumTransform = -1 );
+                 QgsCoordinateTransformContext transformContext );
 
     //! Returns the source CRS
     QgsCoordinateReferenceSystem sourceCrs() const { return mSrcCRS; }
@@ -112,6 +122,9 @@ class CORE_EXPORT QgsRasterProjector : public QgsRasterInterface
     //! Requested precision
     Precision mPrecision = Approximate;
 
+    //! Transform context
+    QgsCoordinateTransformContext mTransformContext;
+
 };