ppapi/proxy/flash_font_file_resource.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/proxy/flash_font_file_resource.h"
   6
   7 #include <cstring>
   8
   9 #include "ppapi/c/dev/ppb_font_dev.h"
  10 #include "ppapi/c/pp_errors.h"
  11 #include "ppapi/proxy/ppapi_messages.h"
  12
  13 namespace ppapi {
  14 namespace proxy {
  15
  16 FlashFontFileResource::FlashFontFileResource(
  17     Connection connection,
  18     PP_Instance instance,
  19     const PP_BrowserFont_Trusted_Description* description,
  20     PP_PrivateFontCharset charset)
  21     : PluginResource(connection, instance),
  22       charset_(charset) {
  23   description_.SetFromPPBrowserFontDescription(*description);
  24 }
  25
  26 FlashFontFileResource::~FlashFontFileResource() {
  27 }
  28
  29 thunk::PPB_Flash_FontFile_API*
  30     FlashFontFileResource::AsPPB_Flash_FontFile_API() {
  31   return this;
  32 }
  33
  34 PP_Bool FlashFontFileResource::GetFontTable(uint32_t table,
  35                                             void* output,
  36                                             uint32_t* output_length) {
  37   if (!output_length)
  38     return PP_FALSE;
  39
  40   if (!sent_create_to_renderer()) {
  41     SendCreate(
  42         RENDERER, PpapiHostMsg_FlashFontFile_Create(description_, charset_));
  43   }
  44
  45   std::string* contents = GetFontTable(table);
  46   if (!contents) {
  47     std::string out_contents;
  48     int32_t result = SyncCall<PpapiPluginMsg_FlashFontFile_GetFontTableReply>(
  49         RENDERER, PpapiHostMsg_FlashFontFile_GetFontTable(table),
  50         &out_contents);
  51     if (result != PP_OK)
  52       return PP_FALSE;
  53
  54     contents = AddFontTable(table, out_contents);
  55   }
  56
  57   // If we are going to copy the data into |output|, it must be big enough.
  58   if (output && *output_length < contents->size())
  59     return PP_FALSE;
  60
  61   *output_length = static_cast<uint32_t>(contents->size());
  62   if (output)
  63     memcpy(output, contents->c_str(), *output_length);
  64   return PP_TRUE;
  65 }
  66
  67 std::string* FlashFontFileResource::GetFontTable(uint32_t table) const {
  68   FontTableMap::const_iterator found = font_tables_.find(table);
  69   if (found == font_tables_.end())
  70     return NULL;
  71   return found->second.get();
  72 }
  73
  74 std::string* FlashFontFileResource::AddFontTable(uint32_t table,
  75                                                  const std::string& contents) {
  76   linked_ptr<std::string> heap_string(new std::string(contents));
  77   font_tables_[table] = heap_string;
  78   return heap_string.get();
  79 }
  80
  81 }  // namespace proxy
  82 }  // namespace ppapi