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
|
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_FAST_INK_FAST_INK_HOST_H_
#define ASH_FAST_INK_FAST_INK_HOST_H_
#include <memory>
#include <vector>
#include "ash/ash_export.h"
#include "ash/frame_sink/frame_sink_host.h"
#include "base/memory/raw_ptr.h"
#include "ui/gfx/canvas.h"
namespace viz {
class CompositorFrame;
} // namespace viz
namespace gfx {
class Rect;
} // namespace gfx
namespace gpu {
class ClientSharedImage;
} // namespace gpu
namespace ash {
class FastInkHostTestApi;
// FastInkHost is used to support low-latency rendering. It supports
// 'auto-refresh' mode which provide minimum latency updates for the
// associated window. 'auto-refresh' mode will take advantage of HW overlays
// when possible and trigger continuous updates.
class ASH_EXPORT FastInkHost : public FrameSinkHost {
public:
// Provides flicker free painting to a mappable SharedImage.
class ScopedPaint {
public:
ScopedPaint(const FastInkHost* host,
const gfx::Rect& damage_rect_in_window);
ScopedPaint(const ScopedPaint&) = delete;
ScopedPaint& operator=(const ScopedPaint&) = delete;
~ScopedPaint();
gfx::Canvas& canvas() { return canvas_; }
private:
const raw_ptr<FastInkHost> host_;
// Damage rect in the buffer coordinates.
gfx::Rect damage_rect_;
gfx::Canvas canvas_;
};
FastInkHost();
FastInkHost(const FastInkHost&) = delete;
FastInkHost& operator=(const FastInkHost&) = delete;
~FastInkHost() override;
std::unique_ptr<FastInkHost::ScopedPaint> CreateScopedPaint(
const gfx::Rect& damage_rect_in_window) const;
const gfx::Transform& window_to_buffer_transform() const {
return window_to_buffer_transform_;
}
// FrameSinkHost:
void Init(aura::Window* host_window) override;
void InitForTesting(aura::Window* host_window,
FrameSinkFactory frame_sink_factory) override;
protected:
// FrameSinkHost:
std::unique_ptr<viz::CompositorFrame> CreateCompositorFrame(
const viz::BeginFrameAck& begin_frame_ack,
UiResourceManager& resource_manager,
bool auto_update,
const gfx::Size& last_submitted_frame_size,
float last_submitted_frame_dsf) override;
void OnFirstFrameRequested() override;
void OnFrameSinkLost() override;
private:
friend FastInkHostTestApi;
void InitBufferMetadata(aura::Window* host_window);
void InitializeFastInkBuffer(aura::Window* host_window);
gfx::Rect BufferRectFromWindowRect(const gfx::Rect& rect_in_window) const;
void Draw(SkBitmap bitmap, const gfx::Rect& damage_rect);
void DrawBitmap(SkBitmap bitmap, const gfx::Rect& damage_rect);
void ResetGpuBuffer();
gfx::Transform window_to_buffer_transform_;
gfx::Size buffer_size_;
struct PendingBitmap {
SkBitmap bitmap;
gfx::Rect damage_rect;
};
std::vector<PendingBitmap> pending_bitmaps_;
scoped_refptr<gpu::ClientSharedImage> client_shared_image_;
gpu::SyncToken sync_token_;
scoped_refptr<viz::RasterContextProvider> context_provider_;
};
} // namespace ash
#endif // ASH_FAST_INK_FAST_INK_HOST_H_
|
