QGIS » QGIS Application

Index: src/gui/qgsmapcanvasmap.cpp

===================================================================

--- src/gui/qgsmapcanvasmap.cpp	(revision 9268)

+++ src/gui/qgsmapcanvasmap.cpp	(working copy)

@@ -49,6 +49,7 @@

 void QgsMapCanvasMap::resize( QSize size )

 {

   mPixmap = QPixmap( size );

+  mImage = QImage( size, QImage::Format_RGB32 );	// temporary image - build it here so it is available when switching from QPixmap to QImage rendering

   mCanvas->mapRenderer()->setOutputSize( size, mPixmap.logicalDpiX() );

 }

@@ -68,8 +69,6 @@

   if ( mUseQImageToRender )

   {

     // use temporary image for rendering

-    mImage = QImage( boundingRect().size().toSize(), QImage::Format_RGB32 );

-

     mImage.fill( mBgColor.rgb() );

     QPainter paint;

Index: src/gui/qgsmapcanvas.cpp

===================================================================

--- src/gui/qgsmapcanvas.cpp	(revision 9268)

+++ src/gui/qgsmapcanvas.cpp	(working copy)

@@ -160,6 +160,7 @@

 void QgsMapCanvas::useImageToRender( bool theFlag )

 {

   mMap->useImageToRender( theFlag );

+  refresh();	// redraw the map on change - prevents black map view

 }

 QgsMapCanvasMap* QgsMapCanvas::map()