Add a basic custom painting facility to Sky

sky/engine/core/rendering/RenderBox.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007 Apple Inc. 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 432 matching lines @@
     bool hasRenderOverflow() const { return m_overflow; }
     bool hasVisualOverflow() const { return m_overflow && !borderBoxRect().contains(m_overflow->visualOverflowRect()); }
 
     virtual bool needsPreferredWidthsRecalculation() const;
     virtual void computeIntrinsicRatioInformation(FloatSize& /* intrinsicSize */, double& /* intrinsicRatio */) const { }
 
     virtual bool hasRelativeLogicalHeight() const;
 
     bool hasSameDirectionAs(const RenderBox* object) const { return style()->direction() == object->style()->direction(); }
 
+    void setCustomPainting(PassRefPtr<DisplayList> customPainting) { m_customPainting = customPainting; }
+
 protected:
     virtual void willBeDestroyed() override;
 
     virtual void styleWillChange(StyleDifference, const RenderStyle& newStyle) override;
     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
 
     void paintBackground(const PaintInfo&, const LayoutRect&, const Color& backgroundColor, BackgroundBleedAvoidance = BackgroundBleedNone);
     void paintFillLayer(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&, BackgroundBleedAvoidance, RenderObject* backgroundObject, bool skipBaseColor = false);
     void paintFillLayers(const PaintInfo&, const Color&, const FillLayer&, const LayoutRect&, BackgroundBleedAvoidance = BackgroundBleedNone, RenderObject* backgroundObject = 0);
     void paintBoxDecorationBackgroundWithRect(PaintInfo&, const LayoutPoint&, const LayoutRect&);
@@ skipping 99 matching lines @@
     LayoutUnit m_maxPreferredLogicalWidth;
 
     // Our overflow information.
     OwnPtr<RenderOverflow> m_overflow;
 
     // TODO(ojan): Move these two into RenderBoxRareData.
     OwnPtr<FilterEffectRenderer> m_filterRenderer;
     OwnPtr<TransformationMatrix> m_transform;
 
 private:
+    RefPtr<DisplayList> m_customPainting;
     OwnPtr<RenderLayer> m_layer;
     OwnPtr<RenderBoxRareData> m_rareData;
 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderBox, isBox());
 
 inline RenderBox* RenderBox::previousSiblingBox() const
 {
     return toRenderBox(previousSibling());
 }
@@ skipping 29 matching lines @@
         if (UNLIKELY(inlineBoxWrapper() != 0))
             deleteLineBoxWrapper();
     }
 
     ensureRareData().m_inlineBoxWrapper = boxWrapper;
 }
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_RENDERING_RENDERBOX_H_