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
|
/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2000 Simon Hausmann <hausmann@kde.org>
* Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef RenderFrameSet_h
#define RenderFrameSet_h
#include "RenderBox.h"
namespace WebCore {
class HTMLFrameSetElement;
class MouseEvent;
class RenderFrame;
enum FrameEdge { LeftFrameEdge, RightFrameEdge, TopFrameEdge, BottomFrameEdge };
struct FrameEdgeInfo {
FrameEdgeInfo(bool preventResize = false, bool allowBorder = true)
: m_preventResize(4)
, m_allowBorder(4)
{
m_preventResize.fill(preventResize);
m_allowBorder.fill(allowBorder);
}
bool preventResize(FrameEdge edge) const { return m_preventResize[edge]; }
bool allowBorder(FrameEdge edge) const { return m_allowBorder[edge]; }
void setPreventResize(FrameEdge edge, bool preventResize) { m_preventResize[edge] = preventResize; }
void setAllowBorder(FrameEdge edge, bool allowBorder) { m_allowBorder[edge] = allowBorder; }
private:
Vector<bool> m_preventResize;
Vector<bool> m_allowBorder;
};
class RenderFrameSet : public RenderBox {
public:
RenderFrameSet(HTMLFrameSetElement*);
virtual ~RenderFrameSet();
RenderObject* firstChild() const { ASSERT(children() == virtualChildren()); return children()->firstChild(); }
RenderObject* lastChild() const { ASSERT(children() == virtualChildren()); return children()->lastChild(); }
const RenderObjectChildList* children() const { return &m_children; }
RenderObjectChildList* children() { return &m_children; }
FrameEdgeInfo edgeInfo() const;
bool userResize(MouseEvent*);
bool isResizingRow() const;
bool isResizingColumn() const;
bool canResizeRow(const IntPoint&) const;
bool canResizeColumn(const IntPoint&) const;
void notifyFrameEdgeInfoChanged();
private:
static const int noSplit = -1;
class GridAxis {
WTF_MAKE_NONCOPYABLE(GridAxis);
public:
GridAxis();
void resize(int);
Vector<int> m_sizes;
Vector<int> m_deltas;
Vector<bool> m_preventResize;
Vector<bool> m_allowBorder;
int m_splitBeingResized;
int m_splitResizeOffset;
};
virtual RenderObjectChildList* virtualChildren() { return children(); }
virtual const RenderObjectChildList* virtualChildren() const { return children(); }
virtual const char* renderName() const { return "RenderFrameSet"; }
virtual bool isFrameSet() const { return true; }
virtual void layout();
virtual void paint(PaintInfo&, const LayoutPoint&);
virtual bool isChildAllowed(RenderObject*, RenderStyle*) const;
virtual CursorDirective getCursor(const LayoutPoint&, Cursor&) const;
inline HTMLFrameSetElement* frameSet() const;
bool flattenFrameSet() const;
void setIsResizing(bool);
void layOutAxis(GridAxis&, const Length*, int availableSpace);
void computeEdgeInfo();
void fillFromEdgeInfo(const FrameEdgeInfo& edgeInfo, int r, int c);
void positionFrames();
void positionFramesWithFlattening();
int splitPosition(const GridAxis&, int split) const;
int hitTestSplit(const GridAxis&, int position) const;
void startResizing(GridAxis&, int position);
void continueResizing(GridAxis&, int position);
void paintRowBorder(const PaintInfo&, const IntRect&);
void paintColumnBorder(const PaintInfo&, const IntRect&);
RenderObjectChildList m_children;
GridAxis m_rows;
GridAxis m_cols;
bool m_isResizing;
bool m_isChildResizing;
};
inline RenderFrameSet* toRenderFrameSet(RenderObject* object)
{
ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isFrameSet());
return static_cast<RenderFrameSet*>(object);
}
// This will catch anyone doing an unnecessary cast.
void toRenderFrameSet(const RenderFrameSet*);
} // namespace WebCore
#endif // RenderFrameSet_h
|
