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
35namespace blink {
36
37class RenderLineBoxList {
38public:
39    RenderLineBoxList()
40        : m_firstLineBox(0)
41        , m_lastLineBox(0)
42    {
43    }
44
45#if ENABLE(ASSERT)
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    bool hitTest(RenderBoxModelObject*, const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) const;
67    bool anyLineIntersectsRect(RenderBoxModelObject*, const LayoutRect&, const LayoutPoint&) const;
68    bool lineIntersectsDirtyRect(RenderBoxModelObject*, InlineFlowBox*, const PaintInfo&, const LayoutPoint&) const;
69    bool rangeIntersectsRect(RenderBoxModelObject*, LayoutUnit logicalTop, LayoutUnit logicalBottom, const LayoutRect&, const LayoutPoint&) const;
70
71private:
72
73    // For block flows, each box represents the root inline box for a line in the
74    // paragraph.
75    // For inline flows, each box represents a portion of that inline.
76    InlineFlowBox* m_firstLineBox;
77    InlineFlowBox* m_lastLineBox;
78};
79
80
81#if !ENABLE(ASSERT)
82inline void RenderLineBoxList::checkConsistency() const
83{
84}
85#endif
86
87} // namespace blink
88
89#endif // RenderFlow_h
90