Invert color flag for raster renderer

mhugent · mhugent · commit cd0348944043 · 2011-12-28T11:57:55.000+01:00
diff --git a/src/core/raster/qgsrasterrenderer.cpp b/src/core/raster/qgsrasterrenderer.cpp
@@ -21,7 +21,7 @@
 #include "qgsmaptopixel.h"
 
 QgsRasterRenderer::QgsRasterRenderer( QgsRasterDataProvider* provider, QgsRasterResampler* resampler ): mProvider( provider ), mResampler( resampler ),
-    mOpacity( 1.0 ), mRasterTransparency( 0 ), mAlphaBand( -1 )
+  mOpacity( 1.0 ), mRasterTransparency( 0 ), mAlphaBand( -1 ), mInvertColor( false )
 {
 }
 
@@ -64,7 +64,7 @@ void QgsRasterRenderer::startRasterRead( int bandNumber, QgsRasterViewPort* view
   pInfo.nCols = viewPort->drawableAreaXDim * oversampling;
   pInfo.nRows = viewPort->drawableAreaYDim * oversampling;
   int totalMemoryUsage = pInfo.nCols * pInfo.nRows * mProvider->dataTypeSize( bandNumber );
-  int parts = totalMemoryUsage / /*100000000*/ 100000 + 1;
+  int parts = totalMemoryUsage / 100000000 /*100000*/ + 1;
   pInfo.nPartsPerDimension = sqrt( parts );
   pInfo.nColsPerPart = pInfo.nCols / pInfo.nPartsPerDimension;
   pInfo.nRowsPerPart = pInfo.nRows / pInfo.nPartsPerDimension;
diff --git a/src/core/raster/qgsrasterrenderer.h b/src/core/raster/qgsrasterrenderer.h
@@ -57,6 +57,9 @@ class QgsRasterRenderer
     void setAlphaBand( int band ) { mAlphaBand = band; }
     int alphaBand() const { return mAlphaBand; }
 
+    void setInvertColor( bool invert ){ mInvertColor = invert; }
+    bool invertColor() const { return mInvertColor; }
+
   protected:
     inline double readValue( void *data, QgsRasterDataProvider::DataType type, int index );
 
@@ -77,6 +80,8 @@ class QgsRasterRenderer
         Default: -1 (not set)*/
     int mAlphaBand;
 
+    bool mInvertColor;
+
   private:
     /**Remove part into and release memory*/
     void removePartInfo( int bandNumer );
