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   ~GLSurfaceWGL() override;
  18
  19   // Implement GLSurface.
  20   void* GetDisplay() override;
  21
  22   static bool InitializeOneOff();
  23   static HDC GetDisplayDC();
  24
  25  private:
  26   DISALLOW_COPY_AND_ASSIGN(GLSurfaceWGL);
  27 };
  28
  29 // A surface used to render to a view.
  30 class NativeViewGLSurfaceWGL : public GLSurfaceWGL {
  31  public:
  32   explicit NativeViewGLSurfaceWGL(gfx::AcceleratedWidget window);
  33   ~NativeViewGLSurfaceWGL() override;
  34
  35   // Implement GLSurface.
  36   bool Initialize() override;
  37   void Destroy() override;
  38   bool IsOffscreen() override;
  39   bool SwapBuffers() override;
  40   gfx::Size GetSize() override;
  41   void* GetHandle() override;
  42
  43  private:
  44   gfx::AcceleratedWidget window_;
  45   gfx::AcceleratedWidget child_window_;
  46   HDC device_context_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceWGL);
  49 };
  50
  51
  52 // A surface used to render to an offscreen pbuffer.
  53 class PbufferGLSurfaceWGL : public GLSurfaceWGL {
  54  public:
  55   explicit PbufferGLSurfaceWGL(const gfx::Size& size);
  56   ~PbufferGLSurfaceWGL() override;
  57
  58   // Implement GLSurface.
  59   bool Initialize() override;
  60   void Destroy() override;
  61   bool IsOffscreen() override;
  62   bool SwapBuffers() override;
  63   gfx::Size GetSize() override;
  64   void* GetHandle() override;
  65
  66  private:
  67   gfx::Size size_;
  68   HDC device_context_;
  69   void* pbuffer_;
  70
  71   DISALLOW_COPY_AND_ASSIGN(PbufferGLSurfaceWGL);
  72 };
  73
  74 }  // namespace gfx
  75
  76 #endif  // UI_GL_GL_SURFACE_WGL_H_