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
|
/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2006, 2007, 2009 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 RenderBoxModelObject_h
#define RenderBoxModelObject_h
#include "RenderObject.h"
namespace WebCore {
// Values for vertical alignment.
const int PositionTop = -0x7fffffff;
const int PositionBottom = 0x7fffffff;
const int PositionUndefined = 0x80000000;
// This class is the base for all objects that adhere to the CSS box model as described
// at http://www.w3.org/TR/CSS21/box.html
class RenderBoxModelObject : public RenderObject {
public:
RenderBoxModelObject(Node*);
virtual ~RenderBoxModelObject();
virtual void destroy();
int relativePositionOffsetX() const;
int relativePositionOffsetY() const;
IntSize relativePositionOffset() const { return IntSize(relativePositionOffsetX(), relativePositionOffsetY()); }
// IE extensions. Used to calculate offsetWidth/Height. Overridden by inlines (RenderFlow)
// to return the remaining width on a given line (and the height of a single line).
virtual int offsetLeft() const;
virtual int offsetTop() const;
virtual int offsetWidth() const = 0;
virtual int offsetHeight() const = 0;
virtual void styleWillChange(StyleDifference, const RenderStyle* newStyle);
virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
virtual void updateBoxModelInfoFromStyle();
bool hasSelfPaintingLayer() const;
RenderLayer* layer() const { return m_layer; }
virtual bool requiresLayer() const { return isRoot() || isPositioned() || isRelPositioned() || isTransparent() || hasOverflowClip() || hasTransform() || hasMask() || hasReflection(); }
// This will work on inlines to return the bounding box of all of the lines' border boxes.
virtual IntRect borderBoundingBox() const = 0;
// Virtual since table cells override
virtual int paddingTop(bool includeIntrinsicPadding = true) const;
virtual int paddingBottom(bool includeIntrinsicPadding = true) const;
virtual int paddingLeft(bool includeIntrinsicPadding = true) const;
virtual int paddingRight(bool includeIntrinsicPadding = true) const;
virtual int borderTop() const { return style()->borderTopWidth(); }
virtual int borderBottom() const { return style()->borderBottomWidth(); }
virtual int borderLeft() const { return style()->borderLeftWidth(); }
virtual int borderRight() const { return style()->borderRightWidth(); }
virtual int marginTop() const = 0;
virtual int marginBottom() const = 0;
virtual int marginLeft() const = 0;
virtual int marginRight() const = 0;
bool hasHorizontalBordersPaddingOrMargin() const { return hasHorizontalBordersOrPadding() || marginLeft() != 0 || marginRight() != 0; }
bool hasHorizontalBordersOrPadding() const { return borderLeft() != 0 || borderRight() != 0 || paddingLeft() != 0 || paddingRight() != 0; }
virtual int containingBlockWidthForContent() const;
virtual void childBecameNonInline(RenderObject* /*child*/) { }
void paintBorder(GraphicsContext*, int tx, int ty, int w, int h, const RenderStyle*, bool begin = true, bool end = true);
bool paintNinePieceImage(GraphicsContext*, int tx, int ty, int w, int h, const RenderStyle*, const NinePieceImage&, CompositeOperator = CompositeSourceOver);
void paintBoxShadow(GraphicsContext*, int tx, int ty, int w, int h, const RenderStyle*, bool begin = true, bool end = true);
virtual void paintFillLayerExtended(const PaintInfo&, const Color&, const FillLayer*, int clipY, int clipHeight,
int tx, int ty, int width, int height, InlineFlowBox* = 0, CompositeOperator = CompositeSourceOver);
// The difference between this inline's baseline position and the line's baseline position.
int verticalPosition(bool firstLine) const;
// Called by RenderObject::destroy() (and RenderWidget::destroy()) and is the only way layers should ever be destroyed
void destroyLayer();
protected:
void calculateBackgroundImageGeometry(const FillLayer*, int tx, int ty, int w, int h, IntRect& destRect, IntPoint& phase, IntSize& tileSize);
IntSize calculateBackgroundSize(const FillLayer*, int scaledWidth, int scaledHeight) const;
private:
virtual bool isBoxModelObject() const { return true; }
friend class RenderView;
RenderLayer* m_layer;
// Used to store state between styleWillChange and styleDidChange
static bool s_wasFloating;
};
inline RenderBoxModelObject* toRenderBoxModelObject(RenderObject* o)
{
ASSERT(!o || o->isBoxModelObject());
return static_cast<RenderBoxModelObject*>(o);
}
inline const RenderBoxModelObject* toRenderBoxModelObject(const RenderObject* o)
{
ASSERT(!o || o->isBoxModelObject());
return static_cast<const RenderBoxModelObject*>(o);
}
// This will catch anyone doing an unnecessary cast.
void toRenderBoxModelObject(const RenderBoxModelObject*);
} // namespace WebCore
#endif // RenderBoxModelObject_h
|