ppapi/thunk/ppb_graphics_2d_api.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 PPAPI_THUNK_PPB_GRAPHICS_2D_API_H_
   6 #define PPAPI_THUNK_PPB_GRAPHICS_2D_API_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "ppapi/c/pp_bool.h"
  10 #include "ppapi/c/pp_completion_callback.h"
  11 #include "ppapi/c/pp_point.h"
  12 #include "ppapi/c/pp_rect.h"
  13 #include "ppapi/c/pp_resource.h"
  14 #include "ppapi/c/pp_size.h"
  15 #include "ppapi/thunk/ppapi_thunk_export.h"
  16
  17 namespace ppapi {
  18
  19 class TrackedCallback;
  20
  21 namespace thunk {
  22
  23 class PPAPI_THUNK_EXPORT PPB_Graphics2D_API {
  24  public:
  25   virtual ~PPB_Graphics2D_API() {}
  26
  27   virtual PP_Bool Describe(PP_Size* size, PP_Bool* is_always_opaque) = 0;
  28   virtual void PaintImageData(PP_Resource image_data,
  29                               const PP_Point* top_left,
  30                               const PP_Rect* src_rect) = 0;
  31   virtual void Scroll(const PP_Rect* clip_rect,
  32                       const PP_Point* amount) = 0;
  33   virtual void ReplaceContents(PP_Resource image_data) = 0;
  34   virtual bool SetScale(float scale) = 0;
  35   virtual float GetScale() = 0;
  36
  37   // When |old_image_data| is non-null and the flush is executing a replace
  38   // contents (which leaves the "old" ImageData unowned), the resource ID of
  39   // the old image data will be placed into |*old_image_data| synchronously
  40   // (not when the flush callback completes).
  41   //
  42   // When this happens, a reference to this resource will be transferred to the
  43   // caller. If there is no replace contents operation, old_image_data will be
  44   // ignored. If |*old_image_data| is null, then the old image data will be
  45   // destroyed if there was one.
  46   virtual int32_t Flush(scoped_refptr<TrackedCallback> callback,
  47                         PP_Resource* old_image_data) = 0;
  48
  49   // Test only
  50   virtual bool ReadImageData(PP_Resource image, const PP_Point* top_left) = 0;
  51 };
  52
  53 }  // namespace thunk
  54 }  // namespace ppapi
  55
  56 #endif  // PPAPI_THUNK_PPB_GRAPHICS_2D_API_H_