ui/ozone/public/ozone_platform.h

   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_OZONE_PUBLIC_OZONE_PLATFORM_H_
   6 #define UI_OZONE_PUBLIC_OZONE_PLATFORM_H_
   7
   8 #include "base/files/scoped_file.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "ui/ozone/ozone_export.h"
  11
  12 namespace gfx {
  13 class Rect;
  14 }
  15
  16 namespace ui {
  17
  18 class CursorFactoryOzone;
  19 class InputController;
  20 class GpuPlatformSupport;
  21 class GpuPlatformSupportHost;
  22 class NativeDisplayDelegate;
  23 class OverlayManagerOzone;
  24 class PlatformWindow;
  25 class PlatformWindowDelegate;
  26 class SurfaceFactoryOzone;
  27 class SystemInputInjector;
  28
  29 // Base class for Ozone platform implementations.
  30 //
  31 // Ozone platforms must override this class and implement the virtual
  32 // GetFooFactoryOzone() methods to provide implementations of the
  33 // various ozone interfaces.
  34 //
  35 // The OzonePlatform subclass can own any state needed by the
  36 // implementation that is shared between the various ozone interfaces,
  37 // such as a connection to the windowing system.
  38 //
  39 // A platform is free to use different implementations of each
  40 // interface depending on the context. You can, for example, create
  41 // different objects depending on the underlying hardware, command
  42 // line flags, or whatever is appropriate for the platform.
  43 class OZONE_EXPORT OzonePlatform {
  44  public:
  45   OzonePlatform();
  46   virtual ~OzonePlatform();
  47
  48   // Initializes the subsystems/resources necessary for the UI process (e.g.
  49   // events, surface, etc.)
  50   static void InitializeForUI();
  51
  52   // Initializes the subsystems/resources necessary for the GPU process.
  53   static void InitializeForGPU();
  54
  55   static OzonePlatform* GetInstance();
  56
  57   // Factory getters to override in subclasses. The returned objects will be
  58   // injected into the appropriate layer at startup. Subclasses should not
  59   // inject these objects themselves. Ownership is retained by OzonePlatform.
  60   virtual ui::SurfaceFactoryOzone* GetSurfaceFactoryOzone() = 0;
  61   virtual ui::OverlayManagerOzone* GetOverlayManager() = 0;
  62   virtual ui::CursorFactoryOzone* GetCursorFactoryOzone() = 0;
  63   virtual ui::InputController* GetInputController() = 0;
  64   virtual ui::GpuPlatformSupport* GetGpuPlatformSupport() = 0;
  65   virtual ui::GpuPlatformSupportHost* GetGpuPlatformSupportHost() = 0;
  66   virtual scoped_ptr<SystemInputInjector> CreateSystemInputInjector() = 0;
  67   virtual scoped_ptr<PlatformWindow> CreatePlatformWindow(
  68       PlatformWindowDelegate* delegate,
  69       const gfx::Rect& bounds) = 0;
  70   virtual scoped_ptr<ui::NativeDisplayDelegate>
  71       CreateNativeDisplayDelegate() = 0;
  72   // Open ClientNativePixmap device file for non-GPU processes to import a
  73   // ClientNativePixmap.
  74   virtual base::ScopedFD OpenClientNativePixmapDevice() const = 0;
  75
  76  private:
  77   virtual void InitializeUI() = 0;
  78   virtual void InitializeGPU() = 0;
  79
  80   static void CreateInstance();
  81
  82   static OzonePlatform* instance_;
  83
  84   DISALLOW_COPY_AND_ASSIGN(OzonePlatform);
  85 };
  86
  87 }  // namespace ui
  88
  89 #endif  // UI_OZONE_PUBLIC_OZONE_PLATFORM_H_