Resolves: #i121534# only handle bitmaps which are inside visible area

(cherry picked from commit ad026d3b)

Change-Id: I2f4ca680a003e1c58d9cbefa3bee81bcc117916b

drawinglayer/source/processor2d/vclhelperbitmaprender.cxx

@@ -74,8 +74,15 @@ namespace drawinglayer
         }
 
         // draw bitmap
+        if(aSize == aContent.GetSizePixel())
+        {
+            rOutDev.DrawBitmapEx(aPoint, aContent);
+        }
+        else
+        {
             rOutDev.DrawBitmapEx(aPoint, aSize, aContent);
         }
+    }
 
     void RenderBitmapPrimitive2D_self(
         OutputDevice& rOutDev,

drawinglayer/source/processor2d/vclprocessor2d.cxx

@@ -415,10 +415,24 @@ namespace drawinglayer
         // direct draw of transformed BitmapEx primitive
         void VclProcessor2D::RenderBitmapPrimitive2D(const primitive2d::BitmapPrimitive2D& rBitmapCandidate)
         {
-            // create local transform
-            basegfx::B2DHomMatrix aLocalTransform(maCurrentTransformation * rBitmapCandidate.getTransform());
+            // check local ViewPort
+            const basegfx::B2DRange& rDiscreteViewPort(getViewInformation2D().getDiscreteViewport());
+            const basegfx::B2DHomMatrix aLocalTransform(maCurrentTransformation * rBitmapCandidate.getTransform());
+
+            if(!rDiscreteViewPort.isEmpty())
+            {
+                // check if we are visible
+                basegfx::B2DRange aUnitRange(0.0, 0.0, 1.0, 1.0);
+
+                aUnitRange.transform(aLocalTransform);
+
+                if(!aUnitRange.overlaps(rDiscreteViewPort))
+                {
+                    return;
+                }
+            }
+
             BitmapEx aBitmapEx(rBitmapCandidate.getBitmapEx());
-            bool bPainted(false);
 
             if(maBColorModifierStack.count())
             {
@@ -435,11 +449,10 @@ namespace drawinglayer
                     mpOutputDevice->SetLineColor();
                     mpOutputDevice->DrawPolygon(aPolygon);
 
-                    bPainted = true;
+                    return;
                 }
             }
 
-            if(!bPainted)
             {
                 static bool bForceUseOfOwnTransformer(false);