1 /* 2 * Copyright (C) 2009 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 30 #ifndef RenderLineBoxList_h 31 #define RenderLineBoxList_h 32 33 #include "core/rendering/RenderObject.h" 34 35 namespace WebCore { 36 37 class RenderLineBoxList { 38 public: 39 RenderLineBoxList() 40 : m_firstLineBox(0) 41 , m_lastLineBox(0) 42 { 43 } 44 45 #ifndef NDEBUG 46 ~RenderLineBoxList(); 47 #endif 48 49 InlineFlowBox* firstLineBox() const { return m_firstLineBox; } 50 InlineFlowBox* lastLineBox() const { return m_lastLineBox; } 51 52 void checkConsistency() const; 53 54 void appendLineBox(InlineFlowBox*); 55 56 void deleteLineBoxTree(); 57 void deleteLineBoxes(); 58 59 void extractLineBox(InlineFlowBox*); 60 void attachLineBox(InlineFlowBox*); 61 void removeLineBox(InlineFlowBox*); 62 63 void dirtyLineBoxes(); 64 void dirtyLinesFromChangedChild(RenderObject* parent, RenderObject* child); 65 66 void paint(RenderBoxModelObject*, PaintInfo&, const LayoutPoint&) const; 67 bool hitTest(RenderBoxModelObject*, const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) const; 68 69 private: 70 bool anyLineIntersectsRect(RenderBoxModelObject*, const LayoutRect&, const LayoutPoint&, LayoutUnit outlineSize = 0) const; 71 bool lineIntersectsDirtyRect(RenderBoxModelObject*, InlineFlowBox*, const PaintInfo&, const LayoutPoint&) const; 72 bool rangeIntersectsRect(RenderBoxModelObject*, LayoutUnit logicalTop, LayoutUnit logicalBottom, const LayoutRect&, const LayoutPoint&) const; 73 74 // For block flows, each box represents the root inline box for a line in the 75 // paragraph. 76 // For inline flows, each box represents a portion of that inline. 77 InlineFlowBox* m_firstLineBox; 78 InlineFlowBox* m_lastLineBox; 79 }; 80 81 82 #ifdef NDEBUG 83 inline void RenderLineBoxList::checkConsistency() const 84 { 85 } 86 #endif 87 88 } // namespace WebCore 89 90 #endif // RenderFlow_h 91
