ppapi/thunk/ppb_graphics_2d_thunk.cc

   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 // From ppb_graphics_2d.idl modified Tue Aug 20 08:13:36 2013.
   6
   7 #include <string.h>
   8
   9 #include "ppapi/c/pp_completion_callback.h"
  10 #include "ppapi/c/pp_errors.h"
  11 #include "ppapi/c/ppb_graphics_2d.h"
  12 #include "ppapi/shared_impl/tracked_callback.h"
  13 #include "ppapi/thunk/enter.h"
  14 #include "ppapi/thunk/ppapi_thunk_export.h"
  15 #include "ppapi/thunk/ppb_graphics_2d_api.h"
  16
  17 namespace ppapi {
  18 namespace thunk {
  19
  20 namespace {
  21
  22 PP_Resource Create(PP_Instance instance,
  23                    const struct PP_Size* size,
  24                    PP_Bool is_always_opaque) {
  25   VLOG(4) << "PPB_Graphics2D::Create()";
  26   EnterResourceCreation enter(instance);
  27   if (enter.failed())
  28     return 0;
  29   return enter.functions()->CreateGraphics2D(instance, size, is_always_opaque);
  30 }
  31
  32 PP_Bool IsGraphics2D(PP_Resource resource) {
  33   VLOG(4) << "PPB_Graphics2D::IsGraphics2D()";
  34   EnterResource<PPB_Graphics2D_API> enter(resource, false);
  35   return PP_FromBool(enter.succeeded());
  36 }
  37
  38 PP_Bool Describe(PP_Resource graphics_2d,
  39                  struct PP_Size* size,
  40                  PP_Bool* is_always_opaque) {
  41   VLOG(4) << "PPB_Graphics2D::Describe()";
  42   EnterResource<PPB_Graphics2D_API> enter(graphics_2d, true);
  43   if (enter.failed()) {
  44     memset(size, 0, sizeof(*size));
  45     memset(is_always_opaque, 0, sizeof(*is_always_opaque));
  46     return PP_FALSE;
  47   }
  48   return enter.object()->Describe(size, is_always_opaque);
  49 }
  50
  51 void PaintImageData(PP_Resource graphics_2d,
  52                     PP_Resource image_data,
  53                     const struct PP_Point* top_left,
  54                     const struct PP_Rect* src_rect) {
  55   VLOG(4) << "PPB_Graphics2D::PaintImageData()";
  56   EnterResource<PPB_Graphics2D_API> enter(graphics_2d, true);
  57   if (enter.failed())
  58     return;
  59   enter.object()->PaintImageData(image_data, top_left, src_rect);
  60 }
  61
  62 void Scroll(PP_Resource graphics_2d,
  63             const struct PP_Rect* clip_rect,
  64             const struct PP_Point* amount) {
  65   VLOG(4) << "PPB_Graphics2D::Scroll()";
  66   EnterResource<PPB_Graphics2D_API> enter(graphics_2d, true);
  67   if (enter.failed())
  68     return;
  69   enter.object()->Scroll(clip_rect, amount);
  70 }
  71
  72 void ReplaceContents(PP_Resource graphics_2d, PP_Resource image_data) {
  73   VLOG(4) << "PPB_Graphics2D::ReplaceContents()";
  74   EnterResource<PPB_Graphics2D_API> enter(graphics_2d, true);
  75   if (enter.failed())
  76     return;
  77   enter.object()->ReplaceContents(image_data);
  78 }
  79
  80 int32_t Flush(PP_Resource graphics_2d, struct PP_CompletionCallback callback) {
  81   VLOG(4) << "PPB_Graphics2D::Flush()";
  82   EnterResource<PPB_Graphics2D_API> enter(graphics_2d, callback, true);
  83   if (enter.failed())
  84     return enter.retval();
  85   return enter.SetResult(enter.object()->Flush(enter.callback()));
  86 }
  87
  88 PP_Bool SetScale(PP_Resource resource, float scale) {
  89   VLOG(4) << "PPB_Graphics2D::SetScale()";
  90   EnterResource<PPB_Graphics2D_API> enter(resource, true);
  91   if (enter.failed())
  92     return PP_FALSE;
  93   return enter.object()->SetScale(scale);
  94 }
  95
  96 float GetScale(PP_Resource resource) {
  97   VLOG(4) << "PPB_Graphics2D::GetScale()";
  98   EnterResource<PPB_Graphics2D_API> enter(resource, true);
  99   if (enter.failed())
 100     return 0.0f;
 101   return enter.object()->GetScale();
 102 }
 103
 104 const PPB_Graphics2D_1_0 g_ppb_graphics2d_thunk_1_0 = {
 105   &Create,
 106   &IsGraphics2D,
 107   &Describe,
 108   &PaintImageData,
 109   &Scroll,
 110   &ReplaceContents,
 111   &Flush
 112 };
 113
 114 const PPB_Graphics2D_1_1 g_ppb_graphics2d_thunk_1_1 = {
 115   &Create,
 116   &IsGraphics2D,
 117   &Describe,
 118   &PaintImageData,
 119   &Scroll,
 120   &ReplaceContents,
 121   &Flush,
 122   &SetScale,
 123   &GetScale
 124 };
 125
 126 }  // namespace
 127
 128 PPAPI_THUNK_EXPORT const PPB_Graphics2D_1_0* GetPPB_Graphics2D_1_0_Thunk() {
 129   return &g_ppb_graphics2d_thunk_1_0;
 130 }
 131
 132 PPAPI_THUNK_EXPORT const PPB_Graphics2D_1_1* GetPPB_Graphics2D_1_1_Thunk() {
 133   return &g_ppb_graphics2d_thunk_1_1;
 134 }
 135
 136 }  // namespace thunk
 137 }  // namespace ppapi