Implement GLX for Ozone X11.

ui/gl/gl_surface_glx.h

 // Copyright (c) 2012 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_GL_GL_SURFACE_GLX_H_
 #define UI_GL_GL_SURFACE_GLX_H_
 
 #include <stdint.h>
 
+#include <memory>
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "ui/events/platform/platform_event_dispatcher.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/vsync_provider.h"
 #include "ui/gfx/x/x11_types.h"
 #include "ui/gl/gl_export.h"
 #include "ui/gl/gl_surface.h"
 
 namespace gl {
 
 // Base class for GLX surfaces.
@@ skipping 22 matching lines @@
   void* GetConfig() override = 0;
 
  protected:
   ~GLSurfaceGLX() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(GLSurfaceGLX);
 };
 
 // A surface used to render to a view.
-class GL_EXPORT NativeViewGLSurfaceGLX : public GLSurfaceGLX,
-                                         public ui::PlatformEventDispatcher {
+class GL_EXPORT NativeViewGLSurfaceGLX : public GLSurfaceGLX {
  public:
   explicit NativeViewGLSurfaceGLX(gfx::AcceleratedWidget window);
 
   // Implement GLSurfaceGLX.
   bool Initialize(GLSurface::Format format) override;
   void Destroy() override;
   bool Resize(const gfx::Size& size,
               float scale_factor,
               bool has_alpha) override;
   bool IsOffscreen() override;
   gfx::SwapResult SwapBuffers() override;
   gfx::Size GetSize() override;
   void* GetHandle() override;
   bool SupportsPostSubBuffer() override;
   void* GetConfig() override;
   gfx::SwapResult PostSubBuffer(int x, int y, int width, int height) override;
   gfx::VSyncProvider* GetVSyncProvider() override;
 
  protected:
   ~NativeViewGLSurfaceGLX() override;
 
+  // Handle registering and unregistering for Expose events.
+  virtual void RegisterEvents() = 0;
+  virtual void UnregisterEvents() = 0;
+
+  // Forwards Expose event to child window.
+  void ForwardExposeEvent(XEvent* xevent);
+
+  // Checks if event is Expose for child window.
+  bool CanHandleEvent(XEvent* xevent);
+
+  gfx::AcceleratedWidget window() const { return window_; }
+
  private:
   // The handle for the drawable to make current or swap.
   GLXDrawable GetDrawableHandle() const;
 
-  // PlatformEventDispatcher implementation
-  bool CanDispatchEvent(const ui::PlatformEvent& event) override;
-  uint32_t DispatchEvent(const ui::PlatformEvent& event) override;
-
   // Window passed in at creation. Always valid.
   gfx::AcceleratedWidget parent_window_;
 
   // Child window, used to control resizes so that they're in-order with GL.
   gfx::AcceleratedWidget window_;
 
   // GLXDrawable for the window.
   GLXWindow glx_window_;
 
   GLXFBConfig config_;
@@ skipping 29 matching lines @@
 
   // GLXDrawable for the window.
   GLXWindow glx_window_;
 
   DISALLOW_COPY_AND_ASSIGN(UnmappedNativeViewGLSurfaceGLX);
 };
 
 }  // namespace gl
 
 #endif  // UI_GL_GL_SURFACE_GLX_H_