ui/gl/gl_surface_wgl.h

   1 // Copyright (c) 2012 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_GL_GL_SURFACE_WGL_H_
   6 #define UI_GL_GL_SURFACE_WGL_H_
   7
   8 #include "ui/gfx/native_widget_types.h"
   9 #include "ui/gl/gl_surface.h"
  10
  11 namespace gfx {
  12
  13 // Base interface for WGL surfaces.
  14 class GLSurfaceWGL : public GLSurface {
  15  public:
  16   GLSurfaceWGL();
  17
  18   // Implement GLSurface.
  19   void* GetDisplay() override;
  20
  21   static bool InitializeOneOff();
  22   static HDC GetDisplayDC();
  23
  24  protected:
  25   ~GLSurfaceWGL() override;
  26
  27  private:
  28   DISALLOW_COPY_AND_ASSIGN(GLSurfaceWGL);
  29 };
  30
  31 // A surface used to render to a view.
  32 class NativeViewGLSurfaceWGL : public GLSurfaceWGL {
  33  public:
  34   explicit NativeViewGLSurfaceWGL(gfx::AcceleratedWidget window);
  35
  36   // Implement GLSurface.
  37   bool Initialize() override;
  38   void Destroy() override;
  39   bool IsOffscreen() override;
  40   bool SwapBuffers() override;
  41   gfx::Size GetSize() override;
  42   void* GetHandle() override;
  43
  44  private:
  45   ~NativeViewGLSurfaceWGL() override;
  46
  47   gfx::AcceleratedWidget window_;
  48   gfx::AcceleratedWidget child_window_;
  49   HDC device_context_;
  50
  51   DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceWGL);
  52 };
  53
  54
  55 // A surface used to render to an offscreen pbuffer.
  56 class PbufferGLSurfaceWGL : public GLSurfaceWGL {
  57  public:
  58   explicit PbufferGLSurfaceWGL(const gfx::Size& size);
  59
  60   // Implement GLSurface.
  61   bool Initialize() override;
  62   void Destroy() override;
  63   bool IsOffscreen() override;
  64   bool SwapBuffers() override;
  65   gfx::Size GetSize() override;
  66   void* GetHandle() override;
  67
  68  private:
  69   ~PbufferGLSurfaceWGL() override;
  70
  71   gfx::Size size_;
  72   HDC device_context_;
  73   void* pbuffer_;
  74
  75   DISALLOW_COPY_AND_ASSIGN(PbufferGLSurfaceWGL);
  76 };
  77
  78 }  // namespace gfx
  79
  80 #endif  // UI_GL_GL_SURFACE_WGL_H_