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1 // Copyright 2013 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_OZONE_OZONE_PLATFORM_H_ | |
6 #define UI_OZONE_OZONE_PLATFORM_H_ | |
7 | |
8 #include "base/memory/scoped_ptr.h" | |
9 #include "ui/ozone/ozone_export.h" | |
10 | |
11 namespace ui { | |
12 | |
13 class CursorFactoryOzone; | |
14 class EventFactoryOzone; | |
15 class NativeDisplayDelegate; | |
16 class SurfaceFactoryOzone; | |
17 class TouchscreenDeviceManager; | |
18 class GpuPlatformSupport; | |
19 class GpuPlatformSupportHost; | |
20 | |
21 // Base class for Ozone platform implementations. | |
22 // | |
23 // Ozone platforms must override this class and implement the virtual | |
24 // GetFooFactoryOzone() methods to provide implementations of the | |
25 // various ozone interfaces. | |
26 // | |
27 // The OzonePlatform subclass can own any state needed by the | |
28 // implementation that is shared between the various ozone interfaces, | |
29 // such as a connection to the windowing system. | |
30 // | |
31 // A platform is free to use different implementations of each | |
32 // interface depending on the context. You can, for example, create | |
33 // different objects depending on the underlying hardware, command | |
34 // line flags, or whatever is appropriate for the platform. | |
35 class OZONE_EXPORT OzonePlatform { | |
36 public: | |
37 OzonePlatform(); | |
38 virtual ~OzonePlatform(); | |
39 | |
40 // Initializes the subsystems/resources necessary for the UI process (e.g. | |
41 // events, surface, etc.) | |
42 static void InitializeForUI(); | |
43 | |
44 // Initializes the subsystems/resources necessary for the GPU process. | |
45 static void InitializeForGPU(); | |
46 | |
47 static OzonePlatform* GetInstance(); | |
48 | |
49 // Factory getters to override in subclasses. The returned objects will be | |
50 // injected into the appropriate layer at startup. Subclasses should not | |
51 // inject these objects themselves. Ownership is retained by OzonePlatform. | |
52 virtual ui::SurfaceFactoryOzone* GetSurfaceFactoryOzone() = 0; | |
53 virtual ui::EventFactoryOzone* GetEventFactoryOzone() = 0; | |
54 virtual ui::CursorFactoryOzone* GetCursorFactoryOzone() = 0; | |
55 virtual ui::GpuPlatformSupport* GetGpuPlatformSupport() = 0; | |
56 virtual ui::GpuPlatformSupportHost* GetGpuPlatformSupportHost() = 0; | |
57 #if defined(OS_CHROMEOS) | |
58 virtual scoped_ptr<ui::NativeDisplayDelegate> | |
59 CreateNativeDisplayDelegate() = 0; | |
60 virtual scoped_ptr<ui::TouchscreenDeviceManager> | |
61 CreateTouchscreenDeviceManager() = 0; | |
62 #endif | |
63 | |
64 private: | |
65 virtual void InitializeUI() = 0; | |
66 virtual void InitializeGPU() = 0; | |
67 | |
68 static void CreateInstance(); | |
69 | |
70 static OzonePlatform* instance_; | |
71 | |
72 DISALLOW_COPY_AND_ASSIGN(OzonePlatform); | |
73 }; | |
74 | |
75 } // namespace ui | |
76 | |
77 #endif // UI_OZONE_OZONE_PLATFORM_H_ | |
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