/* * Copyright (C) 1999 Lars Knoll (knoll@kde.org) * (C) 2000 Simon Hausmann * Copyright (C) 2006, 2008 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. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public License * along with this library; see the file COPYING.LIB. If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. * */ #ifndef RenderFrameSet_h #define RenderFrameSet_h #include "RenderBox.h" namespace WebCore { class HTMLFrameSetElement; class MouseEvent; enum FrameEdge { LeftFrameEdge, RightFrameEdge, TopFrameEdge, BottomFrameEdge }; struct FrameEdgeInfo { FrameEdgeInfo(bool preventResize = false, bool allowBorder = true) : m_preventResize(4) , m_allowBorder(4) { m_preventResize.fill(preventResize); m_allowBorder.fill(allowBorder); } bool preventResize(FrameEdge edge) const { return m_preventResize[edge]; } bool allowBorder(FrameEdge edge) const { return m_allowBorder[edge]; } void setPreventResize(FrameEdge edge, bool preventResize) { m_preventResize[edge] = preventResize; } void setAllowBorder(FrameEdge edge, bool allowBorder) { m_allowBorder[edge] = allowBorder; } private: Vector m_preventResize; Vector m_allowBorder; }; class RenderFrameSet : public RenderBox { public: RenderFrameSet(HTMLFrameSetElement*); virtual ~RenderFrameSet(); const RenderObjectChildList* children() const { return &m_children; } RenderObjectChildList* children() { return &m_children; } FrameEdgeInfo edgeInfo() const; bool userResize(MouseEvent*); bool isResizingRow() const; bool isResizingColumn() const; bool canResizeRow(const IntPoint&) const; bool canResizeColumn(const IntPoint&) const; #ifdef ANDROID_FLATTEN_FRAMESET void setGridNeedsLayout() { m_gridCalculated = false; } #endif private: static const int noSplit = -1; class GridAxis { WTF_MAKE_NONCOPYABLE(GridAxis); public: GridAxis(); void resize(int); Vector m_sizes; Vector m_deltas; Vector m_preventResize; Vector m_allowBorder; int m_splitBeingResized; int m_splitResizeOffset; }; virtual RenderObjectChildList* virtualChildren() { return children(); } virtual const RenderObjectChildList* virtualChildren() const { return children(); } virtual const char* renderName() const { return "RenderFrameSet"; } virtual bool isFrameSet() const { return true; } virtual void layout(); virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction); virtual void paint(PaintInfo&, int tx, int ty); virtual bool isChildAllowed(RenderObject*, RenderStyle*) const; inline HTMLFrameSetElement* frameSet() const; bool flattenFrameSet() const; void setIsResizing(bool); void layOutAxis(GridAxis&, const Length*, int availableSpace); void computeEdgeInfo(); void fillFromEdgeInfo(const FrameEdgeInfo& edgeInfo, int r, int c); void positionFrames(); void positionFramesWithFlattening(); int splitPosition(const GridAxis&, int split) const; int hitTestSplit(const GridAxis&, int position) const; void startResizing(GridAxis&, int position); void continueResizing(GridAxis&, int position); void paintRowBorder(const PaintInfo&, const IntRect&); void paintColumnBorder(const PaintInfo&, const IntRect&); RenderObjectChildList m_children; GridAxis m_rows; GridAxis m_cols; bool m_isResizing; bool m_isChildResizing; #ifdef ANDROID_FLATTEN_FRAMESET bool m_gridCalculated; #endif }; inline RenderFrameSet* toRenderFrameSet(RenderObject* object) { ASSERT(!object || object->isFrameSet()); return static_cast(object); } // This will catch anyone doing an unnecessary cast. void toRenderFrameSet(const RenderFrameSet*); } // namespace WebCore #endif // RenderFrameSet_h