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29 #include "LayoutTypes.h"
30 #include <wtf/Noncopyable.h>
40 WTF_MAKE_NONCOPYABLE(LayoutState);
44 , m_pageLogicalHeight(0)
45 , m_pageLogicalHeightChanged(false)
54 LayoutState(LayoutState*, RenderBox*, const LayoutSize& offset, LayoutUnit pageHeight, bool pageHeightChanged, ColumnInfo*);
55 LayoutState(RenderObject*);
57 void destroy(RenderArena*);
59 // Overloaded new operator.
60 void* operator new(size_t, RenderArena*) throw();
62 // Overridden to prevent the normal delete from being called.
63 void operator delete(void*, size_t);
65 void clearPaginationInformation();
66 bool isPaginatingColumns() const { return m_columnInfo; }
67 bool isPaginated() const { return m_pageLogicalHeight || m_columnInfo; }
69 // The page logical offset is the object's offset from the top of the page in the page progression
70 // direction (so an x-offset in vertical text and a y-offset for horizontal text).
71 LayoutUnit pageLogicalOffset(LayoutUnit childLogicalOffset) const;
73 void addForcedColumnBreak(LayoutUnit childLogicalOffset);
75 bool pageLogicalHeight() const { return m_pageLogicalHeight; }
76 bool pageLogicalHeightChanged() const { return m_pageLogicalHeightChanged; }
79 // The normal operator new is disallowed.
80 void* operator new(size_t) throw();
84 LayoutRect m_clipRect;
86 // x/y offset from container. Includes relative positioning and scroll offsets.
87 LayoutSize m_paintOffset;
88 // x/y offset from container. Does not include relative positioning or scroll offsets.
89 LayoutSize m_layoutOffset;
90 // Transient offset from the final position of the object
91 // used to ensure that repaints happen in the correct place.
92 // This is a total delta accumulated from the root.
93 LayoutSize m_layoutDelta;
95 // The current page height for the pagination model that encloses us.
96 LayoutUnit m_pageLogicalHeight;
97 // If our page height has changed, this will force all blocks to relayout.
98 bool m_pageLogicalHeightChanged;
99 // The offset of the start of the first page in the nearest enclosing pagination model.
100 LayoutSize m_pageOffset;
101 // If the enclosing pagination model is a column model, then this will store column information for easy retrieval/manipulation.
102 ColumnInfo* m_columnInfo;
106 RenderObject* m_renderer;
110 } // namespace WebCore
112 #endif // LayoutState_h