Limit resolution of symbol fills during composer previews to improve …

…composer responsiveness
qgis · Mar 21, 2014 · 375e0d4 · 375e0d4
1 parent 3c7732c
commit 375e0d4
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Showing 2 changed files with 6 additions and 2 deletions.
diff --git a/src/core/composer/qgscomposershape.cpp b/src/core/composer/qgscomposershape.cpp
@@ -147,7 +147,9 @@ void QgsComposerShape::drawShapeUsingSymbol( QPainter* p )
   context.setScaleFactor( 1.0 );
   if ( mComposition->plotStyle() ==  QgsComposition::Preview )
   {
-    context.setRasterScaleFactor( horizontalViewScaleFactor() );
+    //Limit resolution of symbol fill if composition is not being exported
+    //otherwise zooming into composition slows down renders
+    context.setRasterScaleFactor( qMin( horizontalViewScaleFactor(), 3.0 ) );
   }
   else
   {

diff --git a/src/core/composer/qgspaperitem.cpp b/src/core/composer/qgspaperitem.cpp
@@ -158,7 +158,9 @@ void QgsPaperItem::paint( QPainter* painter, const QStyleOptionGraphicsItem* ite
   context.setScaleFactor( 1.0 );
   if ( mComposition->plotStyle() ==  QgsComposition::Preview )
   {
-    context.setRasterScaleFactor( horizontalViewScaleFactor() );
+    //Limit resolution of symbol fill if composition is not being exported
+    //otherwise zooming into composition slows down renders
+    context.setRasterScaleFactor( qMin( horizontalViewScaleFactor(), 3.0 ) );
   }
   else
   {