round off the destination view rect of the view bitmap to avoid problems with drawing the view color around it

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15753 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/servers/app/ViewLayer.cpp

@@ -373,7 +373,7 @@ ViewLayer::SetUserClipping(const BRegion& region)
 {
 	fDrawState->SetClippingRegion(region);
 	
-	// rebuild clipping
+	// rebuild clipping (for just this view)
 	RebuildClipping(false);
 }
 
@@ -394,6 +394,13 @@ ViewLayer::SetViewBitmap(ServerBitmap* bitmap, BRect sourceRect,
 	fBitmapDestination = destRect;
 	fBitmapResizingMode = resizingMode;
 	fBitmapOptions = options;
+
+	// round off destination rect to avoid problems
+	// with drawing the view color around the bitmap
+	fBitmapDestination.OffsetTo(roundf(fBitmapDestination.left),
+								roundf(fBitmapDestination.top));
+	fBitmapDestination.right = roundf(fBitmapDestination.right);
+	fBitmapDestination.bottom = roundf(fBitmapDestination.bottom);
 }