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
|
/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* 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
* 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 ContentLayerChromium_h
#define ContentLayerChromium_h
#if USE(ACCELERATED_COMPOSITING)
#include "LayerChromium.h"
#include "PlatformCanvas.h"
#include "TextureManager.h"
namespace WebCore {
class LayerTexture;
// A Layer that requires a GraphicsContext to render its contents.
class ContentLayerChromium : public LayerChromium {
friend class LayerRendererChromium;
public:
static PassRefPtr<ContentLayerChromium> create(GraphicsLayerChromium* owner = 0);
virtual ~ContentLayerChromium();
virtual void updateContentsIfDirty();
virtual void unreserveContentsTexture();
virtual void bindContentsTexture();
virtual void draw();
virtual bool drawsContent() const { return m_owner && m_owner->drawsContent(); }
typedef ProgramBinding<VertexShaderPosTex, FragmentShaderTexAlpha> Program;
protected:
explicit ContentLayerChromium(GraphicsLayerChromium* owner);
virtual void cleanupResources();
bool requiresClippedUpdateRect() const;
void resizeUploadBuffer(const IntSize&);
virtual const char* layerTypeAsString() const { return "ContentLayer"; }
virtual void dumpLayerProperties(TextStream&, int indent) const;
OwnPtr<LayerTexture> m_contentsTexture;
bool m_skipsDraw;
// The portion of the upload buffer that has a pending update, in the coordinates of the texture.
IntRect m_uploadUpdateRect;
virtual void updateTextureIfNeeded();
void updateTexture(const uint8_t* pixels, const IntSize&);
private:
PlatformCanvas m_canvas;
IntRect m_visibleRectInLayerCoords;
FloatPoint m_layerCenterInSurfaceCoords;
};
}
#endif // USE(ACCELERATED_COMPOSITING)
#endif
|