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30 #ifndef RenderRegion_h
31 #define RenderRegion_h
33 #include "RenderReplaced.h"
37 class RenderFlowThread;
39 class RenderRegion : public RenderReplaced {
41 explicit RenderRegion(Node*, RenderFlowThread*);
42 virtual ~RenderRegion();
44 virtual bool isRenderRegion() const { return true; }
46 virtual void paintReplaced(PaintInfo&, const LayoutPoint&);
47 virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const LayoutPoint& pointInContainer, const LayoutPoint& accumulatedOffset, HitTestAction);
49 void setRegionRect(const IntRect& rect) { m_regionRect = rect; }
50 IntRect regionRect() const { return m_regionRect; }
55 RenderFlowThread* parentFlowThread() const { return m_parentFlowThread; }
57 // Valid regions do not create circular dependencies with other flows.
58 bool isValid() const { return m_isValid; }
59 void setIsValid(bool valid) { m_isValid = valid; }
61 virtual void layout();
64 virtual const char* renderName() const { return "RenderRegion"; }
66 RenderFlowThread* m_flowThread;
68 // If this RenderRegion is displayed as part of another flow,
69 // we need to create a dependency tree, so that layout of the
70 // regions is always done before the regions themselves.
71 RenderFlowThread* m_parentFlowThread;
77 inline RenderRegion* toRenderRegion(RenderObject* object)
79 ASSERT(!object || object->isRenderRegion());
80 return static_cast<RenderRegion*>(object);
83 inline const RenderRegion* toRenderRegion(const RenderObject* object)
85 ASSERT(!object || object->isRenderRegion());
86 return static_cast<const RenderRegion*>(object);
89 // This will catch anyone doing an unnecessary cast.
90 void toRenderRegion(const RenderRegion*);
92 } // namespace WebCore
94 #endif // RenderRegion_h