Introduce PPB_Flash_Font.

ppapi/proxy/flash_font_file_resource.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/proxy/flash_font_file_resource.h"
+
+#include <cstring>
+
+#include "ppapi/c/dev/ppb_font_dev.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/proxy/ppapi_messages.h"
+
+namespace ppapi {
+namespace proxy {
+
+FlashFontFileResource::FlashFontFileResource(
+    Connection connection,
+    PP_Instance instance,
+    const PP_FontDescription_Dev* description,
+    PP_PrivateFontCharset charset)
+    : PluginResource(connection, instance),
+      charset_(charset) {
+  description_.SetFromPPFontDescription(*description);
+}
+
+FlashFontFileResource::~FlashFontFileResource() {
+}
+
+thunk::PPB_Flash_FontFile_API*
+    FlashFontFileResource::AsPPB_Flash_FontFile_API() {
+  return this;
+}
+
+PP_Bool FlashFontFileResource::GetFontTable(uint32_t table,
+                                            void* output,
+                                            uint32_t* output_length) {
+  if (!output_length)
+    return PP_FALSE;
+
+  if (!sent_create_to_renderer()) {
+    SendCreateToRenderer(
+        PpapiHostMsg_FlashFontFile_Create(description_, charset_));
+  }
+
+  std::string* contents = GetFontTable(table);
+  if (!contents) {
+    IPC::Message reply;
+    int32_t result = CallRendererSync(
+        PpapiHostMsg_FlashFontFile_GetFontTable(table), &reply);
+    if (result != PP_OK)
+      return PP_FALSE;
+
+    PpapiPluginMsg_FlashFontFile_GetFontTableReply::Param param;
+    if (!PpapiPluginMsg_FlashFontFile_GetFontTableReply::Read(&reply, &param))
+      return PP_FALSE;
+
+    contents = AddFontTable(table, param.a);
+  }
+
+  // If we are going to copy the data into |output|, it must be big enough.
+  if (output && *output_length < contents->size())
+    return PP_FALSE;
+
+  *output_length = static_cast<uint32_t>(contents->size());
+  if (output)
+    memcpy(output, contents->c_str(), *output_length);
+  return PP_TRUE;
+}
+
+std::string* FlashFontFileResource::GetFontTable(uint32_t table) const {
+  FontTableMap::const_iterator found = font_tables_.find(table);
+  if (found == font_tables_.end())
+    return NULL;
+  return found->second.get();
+}
+
+std::string* FlashFontFileResource::AddFontTable(uint32_t table,
+                                                 const std::string& contents) {
+  linked_ptr<std::string> heap_string(new std::string(contents));
+  font_tables_[table] = heap_string;
+  return heap_string.get();
+}
+
+}  // namespace proxy
+}  // namespace ppapi