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      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
    138