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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 Fri Apr 26 08:49:08 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/ppb_graphics_2d_api.h"
     15 #include "ppapi/thunk/ppb_instance_api.h"
     16 #include "ppapi/thunk/resource_creation_api.h"
     17 #include "ppapi/thunk/thunk.h"
     18 
     19 namespace ppapi {
     20 namespace thunk {
     21 
     22 namespace {
     23 
     24 PP_Resource Create(PP_Instance instance,
     25                    const struct PP_Size* size,
     26                    PP_Bool is_always_opaque) {
     27   VLOG(4) << "PPB_Graphics2D::Create()";
     28   EnterResourceCreation enter(instance);
     29   if (enter.failed())
     30     return 0;
     31   return enter.functions()->CreateGraphics2D(instance, size, is_always_opaque);
     32 }
     33 
     34 PP_Bool IsGraphics2D(PP_Resource resource) {
     35   VLOG(4) << "PPB_Graphics2D::IsGraphics2D()";
     36   EnterResource<PPB_Graphics2D_API> enter(resource, false);
     37   return PP_FromBool(enter.succeeded());
     38 }
     39 
     40 PP_Bool Describe(PP_Resource graphics_2d,
     41                  struct PP_Size* size,
     42                  PP_Bool* is_always_opaque) {
     43   VLOG(4) << "PPB_Graphics2D::Describe()";
     44   EnterResource<PPB_Graphics2D_API> enter(graphics_2d, true);
     45   if (enter.failed()) {
     46     memset(size, 0, sizeof(*size));
     47     memset(is_always_opaque, 0, sizeof(*is_always_opaque));
     48     return PP_FALSE;
     49   }
     50   return enter.object()->Describe(size, is_always_opaque);
     51 }
     52 
     53 void PaintImageData(PP_Resource graphics_2d,
     54                     PP_Resource image_data,
     55                     const struct PP_Point* top_left,
     56                     const struct PP_Rect* src_rect) {
     57   VLOG(4) << "PPB_Graphics2D::PaintImageData()";
     58   EnterResource<PPB_Graphics2D_API> enter(graphics_2d, true);
     59   if (enter.failed())
     60     return;
     61   enter.object()->PaintImageData(image_data, top_left, src_rect);
     62 }
     63 
     64 void Scroll(PP_Resource graphics_2d,
     65             const struct PP_Rect* clip_rect,
     66             const struct PP_Point* amount) {
     67   VLOG(4) << "PPB_Graphics2D::Scroll()";
     68   EnterResource<PPB_Graphics2D_API> enter(graphics_2d, true);
     69   if (enter.failed())
     70     return;
     71   enter.object()->Scroll(clip_rect, amount);
     72 }
     73 
     74 void ReplaceContents(PP_Resource graphics_2d, PP_Resource image_data) {
     75   VLOG(4) << "PPB_Graphics2D::ReplaceContents()";
     76   EnterResource<PPB_Graphics2D_API> enter(graphics_2d, true);
     77   if (enter.failed())
     78     return;
     79   enter.object()->ReplaceContents(image_data);
     80 }
     81 
     82 int32_t Flush(PP_Resource graphics_2d, struct PP_CompletionCallback callback) {
     83   VLOG(4) << "PPB_Graphics2D::Flush()";
     84   EnterResource<PPB_Graphics2D_API> enter(graphics_2d, callback, true);
     85   if (enter.failed())
     86     return enter.retval();
     87   return enter.SetResult(enter.object()->Flush(enter.callback()));
     88 }
     89 
     90 PP_Bool SetScale(PP_Resource resource, float scale) {
     91   VLOG(4) << "PPB_Graphics2D::SetScale()";
     92   EnterResource<PPB_Graphics2D_API> enter(resource, true);
     93   if (enter.failed())
     94     return PP_FALSE;
     95   return enter.object()->SetScale(scale);
     96 }
     97 
     98 float GetScale(PP_Resource resource) {
     99   VLOG(4) << "PPB_Graphics2D::GetScale()";
    100   EnterResource<PPB_Graphics2D_API> enter(resource, true);
    101   if (enter.failed())
    102     return 0.0f;
    103   return enter.object()->GetScale();
    104 }
    105 
    106 const PPB_Graphics2D_1_0 g_ppb_graphics2d_thunk_1_0 = {
    107   &Create,
    108   &IsGraphics2D,
    109   &Describe,
    110   &PaintImageData,
    111   &Scroll,
    112   &ReplaceContents,
    113   &Flush
    114 };
    115 
    116 const PPB_Graphics2D_1_1 g_ppb_graphics2d_thunk_1_1 = {
    117   &Create,
    118   &IsGraphics2D,
    119   &Describe,
    120   &PaintImageData,
    121   &Scroll,
    122   &ReplaceContents,
    123   &Flush,
    124   &SetScale,
    125   &GetScale
    126 };
    127 
    128 }  // namespace
    129 
    130 const PPB_Graphics2D_1_0* GetPPB_Graphics2D_1_0_Thunk() {
    131   return &g_ppb_graphics2d_thunk_1_0;
    132 }
    133 
    134 const PPB_Graphics2D_1_1* GetPPB_Graphics2D_1_1_Thunk() {
    135   return &g_ppb_graphics2d_thunk_1_1;
    136 }
    137 
    138 }  // namespace thunk
    139 }  // namespace ppapi
    140