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) 2004, 2006, 2009, 2010 Apple Inc. All rights reserved.
* Copyright (C) 2007 Alp Toker <alp@atoker.com>
*
* 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 APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 HTMLCanvasElement_h
#define HTMLCanvasElement_h
#include "CanvasSurface.h"
#include "FloatRect.h"
#include "HTMLElement.h"
#include "IntSize.h"
#if ENABLE(3D_CANVAS)
#include "GraphicsContext3D.h"
#endif
namespace WebCore {
class CanvasContextAttributes;
class CanvasRenderingContext;
class GraphicsContext;
class HTMLCanvasElement;
class IntSize;
class CanvasObserver {
public:
virtual ~CanvasObserver() { }
virtual void canvasChanged(HTMLCanvasElement*, const FloatRect& changedRect) = 0;
virtual void canvasResized(HTMLCanvasElement*) = 0;
virtual void canvasDestroyed(HTMLCanvasElement*) = 0;
};
class HTMLCanvasElement : public HTMLElement, public CanvasSurface {
public:
static PassRefPtr<HTMLCanvasElement> create(Document*);
static PassRefPtr<HTMLCanvasElement> create(const QualifiedName&, Document*);
virtual ~HTMLCanvasElement();
void setWidth(int);
void setHeight(int);
CanvasRenderingContext* getContext(const String&, CanvasContextAttributes* attributes = 0);
void setSize(const IntSize& newSize)
{
if (newSize == size())
return;
m_ignoreReset = true;
setWidth(newSize.width());
setHeight(newSize.height());
m_ignoreReset = false;
reset();
}
virtual void willDraw(const FloatRect&);
void paint(GraphicsContext*, const IntRect&);
void setObserver(CanvasObserver* observer) { m_observer = observer; }
CanvasRenderingContext* renderingContext() const { return m_context.get(); }
RenderBox* renderBox() const { return HTMLElement::renderBox(); }
RenderStyle* computedStyle() { return HTMLElement::computedStyle(); }
#if ENABLE(3D_CANVAS)
bool is3D() const;
#endif
#ifdef ANDROID_INSTRUMENT
void* operator new(size_t size) {
return HTMLElement::operator new(size);
}
void* operator new[](size_t size) {
return HTMLElement::operator new[](size);
}
void operator delete(void* p, size_t size) {
HTMLElement::operator delete(p, size);
}
void operator delete[](void* p, size_t size) {
HTMLElement::operator delete[](p, size);
}
#endif
private:
HTMLCanvasElement(const QualifiedName&, Document*);
#if ENABLE(DASHBOARD_SUPPORT)
virtual HTMLTagStatus endTagRequirement() const;
virtual int tagPriority() const;
#endif
virtual void parseMappedAttribute(Attribute*);
virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
void reset();
bool m_rendererIsCanvas;
OwnPtr<CanvasRenderingContext> m_context;
CanvasObserver* m_observer;
bool m_ignoreReset;
FloatRect m_dirtyRect;
};
} //namespace
#endif
|
