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