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 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#pragma once
30
31#include "RenderObject.h"
32
33namespace WebCore {
34
35class InlineFlowBox;
36class RenderBlockFlow;
37
38class RenderLineBoxList {
39public:
40 RenderLineBoxList()
41 : m_firstLineBox(nullptr)
42 , m_lastLineBox(nullptr)
43 {
44 }
45
46#ifndef NDEBUG
47 ~RenderLineBoxList();
48#endif
49
50 InlineFlowBox* firstLineBox() const { return m_firstLineBox; }
51 InlineFlowBox* lastLineBox() const { return m_lastLineBox; }
52
53 void checkConsistency() const;
54
55 void appendLineBox(std::unique_ptr<InlineFlowBox>);
56
57 void deleteLineBoxTree();
58 void deleteLineBoxes();
59
60 void extractLineBox(InlineFlowBox*);
61 void attachLineBox(InlineFlowBox*);
62 void removeLineBox(InlineFlowBox*);
63
64 void dirtyLineBoxes();
65 void dirtyLinesFromChangedChild(RenderBoxModelObject& parent, RenderObject& child);
66
67 void paint(RenderBoxModelObject*, PaintInfo&, const LayoutPoint&) const;
68 bool hitTest(RenderBoxModelObject*, const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) const;
69
70private:
71 bool anyLineIntersectsRect(RenderBoxModelObject*, const LayoutRect&, const LayoutPoint&, bool usePrintRect = false) const;
72 bool lineIntersectsDirtyRect(RenderBoxModelObject*, InlineFlowBox*, const PaintInfo&, const LayoutPoint&) const;
73 bool rangeIntersectsRect(RenderBoxModelObject*, LayoutUnit logicalTop, LayoutUnit logicalBottom, const LayoutRect&, const LayoutPoint&) const;
74
75 // For block flows, each box represents the root inline box for a line in the
76 // paragraph.
77 // For inline flows, each box represents a portion of that inline.
78 InlineFlowBox* m_firstLineBox;
79 InlineFlowBox* m_lastLineBox;
80};
81
82
83#ifdef NDEBUG
84inline void RenderLineBoxList::checkConsistency() const
85{
86}
87#endif
88
89} // namespace WebCore
90