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 "RenderBox.h"
34
35 namespace WebCore {
36
37 class RenderLineBoxList {
38 public:
RenderLineBoxList()39 RenderLineBoxList()
40 : m_firstLineBox(0)
41 , m_lastLineBox(0)
42 {
43 }
44
45 #ifndef NDEBUG
46 ~RenderLineBoxList();
47 #endif
48
firstLineBox()49 InlineFlowBox* firstLineBox() const { return m_firstLineBox; }
lastLineBox()50 InlineFlowBox* lastLineBox() const { return m_lastLineBox; }
51
52 void checkConsistency() const;
53
54 void appendLineBox(InlineFlowBox*);
55
56 void deleteLineBoxTree(RenderArena*);
57 void deleteLineBoxes(RenderArena*);
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&, int x, int y) const;
67 bool hitTest(RenderBoxModelObject*, const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction) const;
68
69 private:
70 bool anyLineIntersectsRect(RenderBoxModelObject*, const IntRect&, int tx, int ty, bool usePrintRect = false, int outlineSize = 0) const;
71 bool lineIntersectsDirtyRect(RenderBoxModelObject*, InlineFlowBox*, const PaintInfo&, int tx, int ty) const;
72 bool rangeIntersectsRect(RenderBoxModelObject*, int logicalTop, int logicalBottom, const IntRect&, int tx, int ty) 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
checkConsistency()83 inline void RenderLineBoxList::checkConsistency() const
84 {
85 }
86 #endif
87
88 } // namespace WebCore
89
90 #endif // RenderFlow_h
91