Ozone integration.

ui/ozone/public/ozone_platform.h

+// Copyright 2014 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 UI_OZONE_PUBLIC_OZONE_PLATFORM_H_
+#define UI_OZONE_PUBLIC_OZONE_PLATFORM_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "ui/ozone/ozone_export.h"
+
+namespace gfx {
+class Rect;
+}
+
+namespace ui {
+
+class CursorFactoryOzone;
+class InputController;
+class GpuPlatformSupport;
+class GpuPlatformSupportHost;
+class NativeDisplayDelegate;
+class OverlayManagerOzone;
+class PlatformWindow;
+class PlatformWindowDelegate;
+class SurfaceFactoryOzone;
+class SystemInputInjector;
+
+// Base class for Ozone platform implementations.
+//
+// Ozone platforms must override this class and implement the virtual
+// GetFooFactoryOzone() methods to provide implementations of the
+// various ozone interfaces.
+//
+// The OzonePlatform subclass can own any state needed by the
+// implementation that is shared between the various ozone interfaces,
+// such as a connection to the windowing system.
+//
+// A platform is free to use different implementations of each
+// interface depending on the context. You can, for example, create
+// different objects depending on the underlying hardware, command
+// line flags, or whatever is appropriate for the platform.
+class OZONE_EXPORT OzonePlatform {
+ public:
+  OzonePlatform();
+  virtual ~OzonePlatform();
+
+  // Initializes the subsystems/resources necessary for the UI process (e.g.
+  // events, surface, etc.)
+  static void InitializeForUI();
+
+  // Initializes the subsystems/resources necessary for the GPU process.
+  static void InitializeForGPU();
+
+  static OzonePlatform* GetInstance();
+
+  // Factory getters to override in subclasses. The returned objects will be
+  // injected into the appropriate layer at startup. Subclasses should not
+  // inject these objects themselves. Ownership is retained by OzonePlatform.
+  virtual ui::SurfaceFactoryOzone* GetSurfaceFactoryOzone() = 0;
+  virtual ui::OverlayManagerOzone* GetOverlayManager() = 0;
+  virtual ui::CursorFactoryOzone* GetCursorFactoryOzone() = 0;
+  virtual ui::InputController* GetInputController() = 0;
+  virtual ui::GpuPlatformSupport* GetGpuPlatformSupport() = 0;
+  virtual ui::GpuPlatformSupportHost* GetGpuPlatformSupportHost() = 0;
+  virtual scoped_ptr<SystemInputInjector> CreateSystemInputInjector() = 0;
+  virtual scoped_ptr<PlatformWindow> CreatePlatformWindow(
+      PlatformWindowDelegate* delegate,
+      const gfx::Rect& bounds) = 0;
+  virtual scoped_ptr<ui::NativeDisplayDelegate>
+      CreateNativeDisplayDelegate() = 0;
+
+ private:
+  virtual void InitializeUI() = 0;
+  virtual void InitializeGPU() = 0;
+
+  static void CreateInstance();
+
+  static OzonePlatform* instance_;
+
+  DISALLOW_COPY_AND_ASSIGN(OzonePlatform);
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PUBLIC_OZONE_PLATFORM_H_