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