Fix clipping of content outside the bounds of the window.

sky/engine/core/rendering/RenderBox.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 669 matching lines @@
     return true;
 }
 
 // --------------------- painting stuff -------------------------------
 
 static inline bool forwardCompareZIndex(RenderBox* first, RenderBox* second)
 {
     return first->style()->zIndex() < second->style()->zIndex();
 }
 
-void RenderBox::paintLayer(GraphicsContext* context, RenderLayer* rootLayer, const IntRect& rect)
+void RenderBox::paintLayer(GraphicsContext* context, const LayerPaintingInfo& paintingInfo)
 {
     // If this layer is totally invisible then there is nothing to paint.
     // TODO(ojan): Return false from isSelfPainting and then ASSERT(!opacity()) here.
     if (!opacity())
         return;
 
-    LayerPaintingInfo paintingInfo(rootLayer, rect, LayoutSize());
-
     TransformationMatrix* layerTransform = layer()->transform();
 
     if (!layerTransform) {
-        paintLayerContents(context, paintingInfo, rect);
+        paintLayerContents(context, paintingInfo);
         return;
     }
 
     // The RenderView can't be transformed in Sky.
     ASSERT(layer()->parent());
 
     // If the transform can't be inverted, then don't paint anything.
     if (!layerTransform->isInvertible())
         return;
 
@@ skipping 17 matching lines @@
     // Apply the transform.
     GraphicsContextStateSaver stateSaver(*context, false);
     if (!transform.isIdentity()) {
         stateSaver.save();
         context->concatCTM(transform.toAffineTransform());
     }
 
     // Now do a paint with the root layer shifted to be us.
     LayerPaintingInfo transformedPaintingInfo(layer(), enclosingIntRect(transform.inverse().mapRect(paintingInfo.paintDirtyRect)),
         adjustedSubPixelAccumulation);
-    paintLayerContents(context, transformedPaintingInfo, rect);
+    paintLayerContents(context, transformedPaintingInfo);
 
     // Restore the clip.
     layer()->parent()->restoreClip(context, paintingInfo.paintDirtyRect, clipRect);
 }
 
-void RenderBox::paintLayerContents(GraphicsContext* context, const LayerPaintingInfo& paintingInfo, const IntRect& rect)
+void RenderBox::paintLayerContents(GraphicsContext* context, const LayerPaintingInfo& paintingInfo)
 {
     float deviceScaleFactor = blink::deviceScaleFactor(frame());
     context->setDeviceScaleFactor(deviceScaleFactor);
 
     LayoutPoint offsetFromRoot;
     layer()->convertToLayerCoords(paintingInfo.rootLayer, offsetFromRoot);
 
     LayerPaintingInfo localPaintingInfo(paintingInfo);
 
     LayoutRect layerBounds;
@@ skipping 51 matching lines @@
     }
 
     LayoutPoint layerLocation = toPoint(layerBounds.location() - location() + localPaintingInfo.subPixelAccumulation);
 
     Vector<RenderBox*> layers;
     PaintInfo paintInfo(context, pixelSnappedIntRect(contentRect.rect()), localPaintingInfo.rootLayer->renderer());
     paint(paintInfo, layerLocation, layers);
 
     std::stable_sort(layers.begin(), layers.end(), forwardCompareZIndex);
     for (auto& box : layers) {
-        box->paintLayer(context, paintingInfo.rootLayer, rect);
+        box->paintLayer(context, paintingInfo);
     }
 
     if (filterPainter.hasStartedFilterEffect())
         context = filterPainter.applyFilterEffect();
 
     layer()->restoreClip(context, localPaintingInfo.paintDirtyRect, contentRect);
 
     if (layer()->isTransparent()) {
         context->endLayer();
         context->restore();
@@ skipping 2135 matching lines @@
 
 RenderBox::BoxDecorationData::BoxDecorationData(const RenderStyle& style)
 {
     backgroundColor = style.colorIncludingFallback(CSSPropertyBackgroundColor);
     hasBackground = backgroundColor.alpha() || style.hasBackgroundImage();
     ASSERT(hasBackground == style.hasBackground());
     hasBorder = style.hasBorder();
 }
 
 } // namespace blink