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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 #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
     83