1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
/*
* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
* Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All right reserved.
* Copyright (C) 2010 Google Inc. All rights reserved.
* Copyright (C) 2013 ChangSeok Oh <shivamidow@gmail.com>
* Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LineLayoutState_h
#define LineLayoutState_h
#include "LayoutRect.h"
#include "RenderBlockFlow.h"
namespace WebCore {
struct FloatWithRect {
FloatWithRect(RenderBox& f)
: object(f)
, rect(LayoutRect(f.x() - f.marginLeft(), f.y() - f.marginTop(), f.width() + f.horizontalMarginExtent(), f.height() + f.verticalMarginExtent()))
, everHadLayout(f.everHadLayout())
{
}
RenderBox& object;
LayoutRect rect;
bool everHadLayout;
};
// Like LayoutState for layout(), LineLayoutState keeps track of global information
// during an entire linebox tree layout pass (aka layoutInlineChildren).
class LineLayoutState {
public:
LineLayoutState(const RenderBlockFlow& blockFlow, bool fullLayout, LayoutUnit& repaintLogicalTop, LayoutUnit& repaintLogicalBottom, RenderFlowThread* flowThread)
: m_endLineLogicalTop(0)
, m_endLine(0)
, m_lastFloat(0)
, m_floatIndex(0)
, m_adjustedLogicalLineTop(0)
, m_flowThread(flowThread)
, m_repaintLogicalTop(repaintLogicalTop)
, m_repaintLogicalBottom(repaintLogicalBottom)
, m_marginInfo(blockFlow, blockFlow.borderAndPaddingBefore(), blockFlow.borderAndPaddingAfter() + blockFlow.scrollbarLogicalHeight())
, m_endLineMatched(false)
, m_checkForFloatsFromLastLine(false)
, m_isFullLayout(fullLayout)
, m_usesRepaintBounds(false)
{
}
LineInfo& lineInfo() { return m_lineInfo; }
const LineInfo& lineInfo() const { return m_lineInfo; }
LayoutUnit endLineLogicalTop() const { return m_endLineLogicalTop; }
void setEndLineLogicalTop(LayoutUnit logicalTop) { m_endLineLogicalTop = logicalTop; }
RootInlineBox* endLine() const { return m_endLine; }
void setEndLine(RootInlineBox* line) { m_endLine = line; }
FloatingObject* lastFloat() const { return m_lastFloat; }
void setLastFloat(FloatingObject* lastFloat) { m_lastFloat = lastFloat; }
Vector<FloatWithRect>& floats() { return m_floats; }
unsigned floatIndex() const { return m_floatIndex; }
void setFloatIndex(unsigned floatIndex) { m_floatIndex = floatIndex; }
LayoutUnit adjustedLogicalLineTop() const { return m_adjustedLogicalLineTop; }
void setAdjustedLogicalLineTop(LayoutUnit value) { m_adjustedLogicalLineTop = value; }
RenderFlowThread* flowThread() const { return m_flowThread; }
void setFlowThread(RenderFlowThread* thread) { m_flowThread = thread; }
bool endLineMatched() const { return m_endLineMatched; }
void setEndLineMatched(bool endLineMatched) { m_endLineMatched = endLineMatched; }
bool checkForFloatsFromLastLine() const { return m_checkForFloatsFromLastLine; }
void setCheckForFloatsFromLastLine(bool check) { m_checkForFloatsFromLastLine = check; }
void markForFullLayout() { m_isFullLayout = true; }
bool isFullLayout() const { return m_isFullLayout; }
bool usesRepaintBounds() const { return m_usesRepaintBounds; }
void setRepaintRange(LayoutUnit logicalHeight)
{
m_usesRepaintBounds = true;
m_repaintLogicalTop = m_repaintLogicalBottom = logicalHeight;
}
void updateRepaintRangeFromBox(RootInlineBox* box, LayoutUnit paginationDelta = 0)
{
m_usesRepaintBounds = true;
m_repaintLogicalTop = std::min(m_repaintLogicalTop, box->logicalTopVisualOverflow() + std::min<LayoutUnit>(paginationDelta, 0));
m_repaintLogicalBottom = std::max(m_repaintLogicalBottom, box->logicalBottomVisualOverflow() + std::max<LayoutUnit>(paginationDelta, 0));
}
RenderBlockFlow::MarginInfo& marginInfo() { return m_marginInfo; }
LayoutUnit& prevFloatBottomFromAnonymousInlineBlock() { return m_prevFloatBottomFromAnonymousInlineBlock; }
LayoutUnit& maxFloatBottomFromAnonymousInlineBlock() { return m_maxFloatBottomFromAnonymousInlineBlock; }
private:
LineInfo m_lineInfo;
LayoutUnit m_endLineLogicalTop;
RootInlineBox* m_endLine;
FloatingObject* m_lastFloat;
Vector<FloatWithRect> m_floats;
unsigned m_floatIndex;
LayoutUnit m_adjustedLogicalLineTop;
RenderFlowThread* m_flowThread;
// FIXME: Should this be a range object instead of two ints?
LayoutUnit& m_repaintLogicalTop;
LayoutUnit& m_repaintLogicalBottom;
RenderBlockFlow::MarginInfo m_marginInfo;
LayoutUnit m_prevFloatBottomFromAnonymousInlineBlock;
LayoutUnit m_maxFloatBottomFromAnonymousInlineBlock;
bool m_endLineMatched : 1;
bool m_checkForFloatsFromLastLine : 1;
bool m_isFullLayout : 1;
bool m_usesRepaintBounds : 1;
};
}
#endif // LineLayoutState_h
|
