ppapi/thunk/ppb_browser_font_trusted_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 #include "ppapi/thunk/thunk.h"
   6 #include "ppapi/thunk/enter.h"
   7 #include "ppapi/thunk/ppb_browser_font_trusted_api.h"
   8 #include "ppapi/thunk/resource_creation_api.h"
   9
  10 namespace ppapi {
  11 namespace thunk {
  12
  13 namespace {
  14
  15 typedef EnterResource<PPB_BrowserFont_Trusted_API> EnterBrowserFont;
  16
  17 PP_Var GetFontFamilies(PP_Instance instance) {
  18   EnterInstance enter(instance);
  19   if (enter.failed())
  20     return PP_MakeUndefined();
  21   return enter.functions()->GetFontFamilies(instance);
  22 }
  23
  24 PP_Resource Create(PP_Instance instance,
  25                    const PP_BrowserFont_Trusted_Description* description) {
  26   EnterResourceCreation enter(instance);
  27   if (enter.failed())
  28     return 0;
  29   return enter.functions()->CreateBrowserFont(instance, description);
  30 }
  31
  32 PP_Bool IsBrowserFont(PP_Resource resource) {
  33   EnterBrowserFont enter(resource, false);
  34   return enter.succeeded() ? PP_TRUE : PP_FALSE;
  35 }
  36
  37 PP_Bool Describe(PP_Resource font_id,
  38                  PP_BrowserFont_Trusted_Description* description,
  39                  PP_BrowserFont_Trusted_Metrics* metrics) {
  40   EnterBrowserFont enter(font_id, true);
  41   if (enter.failed())
  42     return PP_FALSE;
  43   return enter.object()->Describe(description, metrics);
  44 }
  45
  46 PP_Bool DrawTextAt(PP_Resource font_id,
  47                    PP_Resource image_data,
  48                    const PP_BrowserFont_Trusted_TextRun* text,
  49                    const PP_Point* position,
  50                    uint32_t color,
  51                    const PP_Rect* clip,
  52                    PP_Bool image_data_is_opaque) {
  53   EnterBrowserFont enter(font_id, true);
  54   if (enter.failed())
  55     return PP_FALSE;
  56   return enter.object()->DrawTextAt(image_data, text, position, color, clip,
  57                                     image_data_is_opaque);
  58 }
  59
  60 int32_t MeasureText(PP_Resource font_id,
  61                     const PP_BrowserFont_Trusted_TextRun* text) {
  62   EnterBrowserFont enter(font_id, true);
  63   if (enter.failed())
  64     return -1;
  65   return enter.object()->MeasureText(text);
  66 }
  67
  68 uint32_t CharacterOffsetForPixel(PP_Resource font_id,
  69                                  const PP_BrowserFont_Trusted_TextRun* text,
  70                                  int32_t pixel_position) {
  71   EnterBrowserFont enter(font_id, true);
  72   if (enter.failed())
  73     return -1;
  74   return enter.object()->CharacterOffsetForPixel(text, pixel_position);
  75 }
  76
  77 int32_t PixelOffsetForCharacter(PP_Resource font_id,
  78                                 const PP_BrowserFont_Trusted_TextRun* text,
  79                                 uint32_t char_offset) {
  80   EnterBrowserFont enter(font_id, true);
  81   if (enter.failed())
  82     return -1;
  83   return enter.object()->PixelOffsetForCharacter(text, char_offset);
  84 }
  85
  86 const PPB_BrowserFont_Trusted_1_0 g_ppb_browser_font_trusted_thunk = {
  87   &GetFontFamilies,
  88   &Create,
  89   &IsBrowserFont,
  90   &Describe,
  91   &DrawTextAt,
  92   &MeasureText,
  93   &CharacterOffsetForPixel,
  94   &PixelOffsetForCharacter
  95 };
  96
  97 }  // namespace
  98
  99 const PPB_BrowserFont_Trusted_1_0* GetPPB_BrowserFont_Trusted_1_0_Thunk() {
 100   return &g_ppb_browser_font_trusted_thunk;
 101 }
 102
 103 }  // namespace thunk
 104 }  // namespace ppapi