ui/gl/gl_image.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_IMAGE_H_
   6 #define UI_GL_GL_IMAGE_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "ui/gfx/geometry/rect.h"
  10 #include "ui/gfx/geometry/rect_f.h"
  11 #include "ui/gfx/geometry/size.h"
  12 #include "ui/gfx/native_widget_types.h"
  13 #include "ui/gfx/overlay_transform.h"
  14 #include "ui/gl/gl_export.h"
  15
  16 namespace gfx {
  17
  18 // Encapsulates an image that can be bound to a texture, hiding platform
  19 // specific management.
  20 class GL_EXPORT GLImage : public base::RefCounted<GLImage> {
  21  public:
  22   GLImage() {}
  23
  24   // Destroys the image.
  25   virtual void Destroy(bool have_context) = 0;
  26
  27   // Get the size of the image.
  28   virtual gfx::Size GetSize() = 0;
  29
  30   // Bind image to texture currently bound to |target|.
  31   virtual bool BindTexImage(unsigned target) = 0;
  32
  33   // Release image from texture currently bound to |target|.
  34   virtual void ReleaseTexImage(unsigned target) = 0;
  35
  36   // Copy image to texture currently bound to |target|.
  37   virtual bool CopyTexImage(unsigned target) = 0;
  38
  39   // Called before the texture is used for drawing.
  40   virtual void WillUseTexImage() = 0;
  41
  42   // Called after the texture has been used for drawing.
  43   virtual void DidUseTexImage() = 0;
  44
  45   // Called before the texture image data will be modified.
  46   virtual void WillModifyTexImage() = 0;
  47
  48   // Called after the texture image data has been modified.
  49   virtual void DidModifyTexImage() = 0;
  50
  51   // Schedule image as an overlay plane to be shown at swap time for |widget|.
  52   virtual bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
  53                                     int z_order,
  54                                     OverlayTransform transform,
  55                                     const Rect& bounds_rect,
  56                                     const RectF& crop_rect) = 0;
  57
  58  protected:
  59   virtual ~GLImage() {}
  60
  61  private:
  62   friend class base::RefCounted<GLImage>;
  63
  64   DISALLOW_COPY_AND_ASSIGN(GLImage);
  65 };
  66
  67 }  // namespace gfx
  68
  69 #endif  // UI_GL_GL_IMAGE_H_