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
|
// 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_RESOURCES_BITMAP_CONTENT_LAYER_UPDATER_H_
#define CC_RESOURCES_BITMAP_CONTENT_LAYER_UPDATER_H_
#include "cc/base/cc_export.h"
#include "cc/resources/content_layer_updater.h"
#include "skia/ext/refptr.h"
#include "third_party/skia/include/core/SkBitmap.h"
class SkCanvas;
namespace cc {
class LayerPainter;
class RenderingStatsInstrumenation;
// This class rasterizes the content_rect into a skia bitmap canvas. It then
// creates a ResourceUpdate with this bitmap canvas and inserts the
// ResourceBundle to the provided ResourceUpdateQueue. Actual texture uploading
// is done by ResourceUpdateController.
class CC_EXPORT BitmapContentLayerUpdater : public ContentLayerUpdater {
public:
class Resource : public LayerUpdater::Resource {
public:
Resource(BitmapContentLayerUpdater* updater,
scoped_ptr<PrioritizedResource> resource);
virtual ~Resource();
virtual void Update(ResourceUpdateQueue* queue,
const gfx::Rect& source_rect,
const gfx::Vector2d& dest_offset,
bool partial_update) override;
private:
BitmapContentLayerUpdater* updater_;
DISALLOW_COPY_AND_ASSIGN(Resource);
};
static scoped_refptr<BitmapContentLayerUpdater> Create(
scoped_ptr<LayerPainter> painter,
RenderingStatsInstrumentation* stats_instrumenation,
int layer_id);
virtual scoped_ptr<LayerUpdater::Resource> CreateResource(
PrioritizedResourceManager* manager) override;
virtual void PrepareToUpdate(const gfx::Size& content_size,
const gfx::Rect& paint_rect,
const gfx::Size& tile_size,
float contents_width_scale,
float contents_height_scale) override;
void UpdateTexture(ResourceUpdateQueue* queue,
PrioritizedResource* resource,
const gfx::Rect& source_rect,
const gfx::Vector2d& dest_offset,
bool partial_update);
virtual void SetOpaque(bool opaque) override;
virtual void ReduceMemoryUsage() override;
protected:
BitmapContentLayerUpdater(
scoped_ptr<LayerPainter> painter,
RenderingStatsInstrumentation* stats_instrumenation,
int layer_id);
virtual ~BitmapContentLayerUpdater();
SkBitmap bitmap_backing_;
skia::RefPtr<SkCanvas> canvas_;
gfx::Size canvas_size_;
private:
DISALLOW_COPY_AND_ASSIGN(BitmapContentLayerUpdater);
};
} // namespace cc
#endif // CC_RESOURCES_BITMAP_CONTENT_LAYER_UPDATER_H_
|
