blob: ee2287ee40146013772cf41de839b3dcd84c0105 (
plain)
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
|
// Copyright 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_LAYER_UPDATER_H_
#define CC_LAYER_UPDATER_H_
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "cc/cc_export.h"
namespace gfx {
class Rect;
class Size;
class Vector2d;
}
namespace cc {
class PrioritizedResource;
class PrioritizedResourceManager;
class ResourceUpdateQueue;
class TextureManager;
struct RenderingStats;
class CC_EXPORT LayerUpdater : public base::RefCounted<LayerUpdater> {
public:
// Allows updaters to store per-resource update properties.
class CC_EXPORT Resource {
public:
virtual ~Resource();
PrioritizedResource* texture() { return m_texture.get(); }
void swapTextureWith(scoped_ptr<PrioritizedResource>& texture);
// TODO(reveman): partialUpdate should be a property of this class
// instead of an argument passed to update().
virtual void update(ResourceUpdateQueue&, const gfx::Rect& sourceRect, const gfx::Vector2d& destOffset, bool partialUpdate, RenderingStats*) = 0;
protected:
explicit Resource(scoped_ptr<PrioritizedResource> texture);
private:
scoped_ptr<PrioritizedResource> m_texture;
DISALLOW_COPY_AND_ASSIGN(Resource);
};
LayerUpdater() { }
virtual scoped_ptr<Resource> createResource(PrioritizedResourceManager*) = 0;
// The |resultingOpaqueRect| gives back a region of the layer that was painted opaque. If the layer is marked opaque in the updater,
// then this region should be ignored in preference for the entire layer's area.
virtual void prepareToUpdate(const gfx::Rect& contentRect, const gfx::Size& tileSize, float contentsWidthScale, float contentsHeightScale, gfx::Rect& resultingOpaqueRect, RenderingStats*) { }
// Set true by the layer when it is known that the entire output is going to be opaque.
virtual void setOpaque(bool) { }
protected:
virtual ~LayerUpdater() { }
private:
friend class base::RefCounted<LayerUpdater>;
};
} // namespace cc
#endif // CC_LAYER_UPDATER_H_
|
