1// Copyright 2014 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#ifndef CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_TRUETYPE_FONT_HOST_H_ 6#define CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_TRUETYPE_FONT_HOST_H_ 7 8#include <string> 9#include <vector> 10 11#include "base/compiler_specific.h" 12#include "base/memory/scoped_ptr.h" 13#include "base/memory/weak_ptr.h" 14#include "base/sequenced_task_runner.h" 15#include "content/browser/renderer_host/pepper/pepper_truetype_font.h" 16#include "content/common/content_export.h" 17#include "ppapi/host/host_message_context.h" 18#include "ppapi/host/resource_host.h" 19 20namespace content { 21 22class BrowserPpapiHost; 23 24class CONTENT_EXPORT PepperTrueTypeFontHost : public ppapi::host::ResourceHost { 25 public: 26 PepperTrueTypeFontHost(BrowserPpapiHost* host, 27 PP_Instance instance, 28 PP_Resource resource, 29 const ppapi::proxy::SerializedTrueTypeFontDesc& desc); 30 31 virtual ~PepperTrueTypeFontHost(); 32 33 virtual int32_t OnResourceMessageReceived( 34 const IPC::Message& msg, 35 ppapi::host::HostMessageContext* context) OVERRIDE; 36 37 private: 38 int32_t OnHostMsgGetTableTags(ppapi::host::HostMessageContext* context); 39 int32_t OnHostMsgGetTable(ppapi::host::HostMessageContext* context, 40 uint32_t table, 41 int32_t offset, 42 int32_t max_data_length); 43 44 void OnInitializeComplete(ppapi::proxy::SerializedTrueTypeFontDesc* desc, 45 int32_t result); 46 void OnGetTableTagsComplete(std::vector<uint32_t>* tags, 47 ppapi::host::ReplyMessageContext reply_context, 48 int32_t result); 49 void OnGetTableComplete(std::string* data, 50 ppapi::host::ReplyMessageContext reply_context, 51 int32_t result); 52 53 // We use a SequencedTaskRunner to run potentially slow font operations and 54 // ensure that Initialize completes before we make any calls to get font data. 55 // Even though we allow multiple pending GetTableTags and GetTable calls, this 56 // implies that they run serially. 57 scoped_refptr<base::SequencedTaskRunner> task_runner_; 58 59 scoped_refptr<PepperTrueTypeFont> font_; 60 bool initialize_completed_; 61 62 base::WeakPtrFactory<PepperTrueTypeFontHost> weak_factory_; 63 64 DISALLOW_COPY_AND_ASSIGN(PepperTrueTypeFontHost); 65}; 66 67} // namespace content 68 69#endif // CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_TRUETYPE_FONT_HOST_H_ 70