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
|
/*
* Copyright 2012, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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 ``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 OWNER 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 CanvasLayer_h
#define CanvasLayer_h
#if USE(ACCELERATED_COMPOSITING)
#include "HTMLCanvasElement.h"
#include "ImageData.h"
#include "LayerAndroid.h"
#include "RenderLayer.h"
#include <wtf/RefPtr.h>
namespace WebCore {
class CanvasTexture;
class CanvasLayer : public LayerAndroid, private CanvasObserver {
public:
CanvasLayer(RenderLayer* owner, HTMLCanvasElement* canvas);
CanvasLayer(const CanvasLayer& layer);
virtual ~CanvasLayer();
virtual LayerAndroid* copy() const { return new CanvasLayer(*this); }
virtual SubclassType subclassType() { return LayerAndroid::CanvasLayer; }
virtual void clearDirtyRegion();
virtual bool drawGL(bool layerTilesDisabled);
virtual void contentDraw(SkCanvas* canvas, PaintStyle style);
virtual bool needsTexture();
protected:
virtual InvalidateFlags onSetHwAccelerated(bool hwAccelerated);
private:
virtual void canvasChanged(HTMLCanvasElement*, const FloatRect& changedRect);
virtual void canvasResized(HTMLCanvasElement*);
virtual void canvasDestroyed(HTMLCanvasElement*);
void init();
SkBitmapRef* bitmap() const;
IntRect contentRect() const;
IntSize offsetFromRenderer() const;
HTMLCanvasElement* m_canvas;
IntRect m_contentRect;
IntSize m_offsetFromRenderer;
SkRegion m_dirtyCanvas;
SkBitmapRef* m_bitmap;
RefPtr<CanvasTexture> m_texture;
};
} // namespace WebCore
#endif // USE(ACCELERATED_COMPOSITING)
#endif // CanvasLayer_h
|
