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