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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef UI_GFX_OZONE_SURFACE_OZONE_CANVAS_H_ | |
6 #define UI_GFX_OZONE_SURFACE_OZONE_CANVAS_H_ | |
7 | |
8 #include "base/basictypes.h" | |
9 #include "base/memory/scoped_ptr.h" | |
10 #include "skia/ext/refptr.h" | |
11 #include "ui/gfx/gfx_export.h" | |
12 | |
13 class SkCanvas; | |
14 | |
15 namespace gfx { | |
16 | |
17 class Size; | |
18 class VSyncProvider; | |
19 | |
20 // The platform-specific part of an software output. The class is intended | |
21 // for use when no EGL/GLES2 acceleration is possible. | |
22 // This class owns any bits that the ozone implementation needs freed when | |
23 // the software output is destroyed. | |
24 class GFX_EXPORT SurfaceOzoneCanvas { | |
25 public: | |
26 virtual ~SurfaceOzoneCanvas() {} | |
27 | |
28 // Returns an SkCanvas for drawing on the window. | |
29 virtual skia::RefPtr<SkCanvas> GetCanvas() = 0; | |
30 | |
31 // Attempts to resize the canvas to match the viewport size. After | |
32 // resizing, the compositor must call GetCanvas() to get the next | |
33 // canvas - this invalidates any previous canvas from GetCanvas(). | |
34 virtual void ResizeCanvas(const gfx::Size& viewport_size) = 0; | |
35 | |
36 // Present the current canvas. After presenting, the compositor must | |
37 // call GetCanvas() to get the next canvas - this invalidates any | |
38 // previous canvas from GetCanvas(). | |
39 // | |
40 // The implementation may assume that any pixels outside the damage | |
41 // rectangle are unchanged since the previous call to PresentCanvas(). | |
42 virtual void PresentCanvas(const gfx::Rect& damage) = 0; | |
43 | |
44 // Returns a gfx::VsyncProvider for this surface. Note that this may be | |
45 // called after we have entered the sandbox so if there are operations (e.g. | |
46 // opening a file descriptor providing vsync events) that must be done | |
47 // outside of the sandbox, they must have been completed in | |
48 // InitializeHardware. Returns an empty scoped_ptr on error. | |
49 virtual scoped_ptr<gfx::VSyncProvider> CreateVSyncProvider() = 0; | |
50 }; | |
51 | |
52 } // namespace gfx | |
53 | |
54 #endif // UI_GFX_OZONE_SURFACE_OZONE_CANVAS_H_ | |
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