pepper_browser_font_singleton_host.cc revision a02191e04bc25c4935f804f2c080ae28663d096d
12a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 22a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 32a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// found in the LICENSE file. 42a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 52a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "content/browser/renderer_host/pepper/pepper_browser_font_singleton_host.h" 62a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 72a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/threading/sequenced_worker_pool.h" 82a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/values.h" 92a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "content/common/font_list.h" 102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "content/public/browser/browser_ppapi_host.h" 112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "content/public/browser/browser_thread.h" 122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ppapi/host/dispatch_host_message.h" 132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ppapi/host/resource_message_filter.h" 142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ppapi/proxy/ppapi_messages.h" 152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)namespace content { 172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)namespace { 192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Handles the font list request on the blocking pool. 212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)class FontMessageFilter : public ppapi::host::ResourceMessageFilter { 222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) public: 232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) FontMessageFilter(); 242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // ppapi::host::ResourceMessageFilter implementation. 262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual scoped_refptr<base::TaskRunner> OverrideTaskRunnerForMessage( 272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const IPC::Message& msg) OVERRIDE; 282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual int32_t OnResourceMessageReceived( 292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const IPC::Message& msg, 302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ppapi::host::HostMessageContext* context) OVERRIDE; 312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) private: 332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) virtual ~FontMessageFilter(); 342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Message handler. 362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) int32_t OnHostMsgGetFontFamilies(ppapi::host::HostMessageContext* context); 372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(FontMessageFilter); 392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 41a02191e04bc25c4935f804f2c080ae28663d096dBen MurdochFontMessageFilter::FontMessageFilter() {} 422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 43a02191e04bc25c4935f804f2c080ae28663d096dBen MurdochFontMessageFilter::~FontMessageFilter() {} 442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)scoped_refptr<base::TaskRunner> FontMessageFilter::OverrideTaskRunnerForMessage( 462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const IPC::Message& msg) { 47c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Use the blocking pool to get the font list (currently the only message) 48c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Since getting the font list is non-threadsafe on Linux (for versions of 49c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Pango predating 2013), use a sequenced task runner. 50c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::SequencedWorkerPool* pool = BrowserThread::GetBlockingPool(); 51c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return pool->GetSequencedTaskRunner( 52c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) pool->GetNamedSequenceToken(kFontListSequenceToken)); 532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int32_t FontMessageFilter::OnResourceMessageReceived( 562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const IPC::Message& msg, 572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ppapi::host::HostMessageContext* context) { 582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) IPC_BEGIN_MESSAGE_MAP(FontMessageFilter, msg) 59a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch PPAPI_DISPATCH_HOST_RESOURCE_CALL_0( 60a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch PpapiHostMsg_BrowserFontSingleton_GetFontFamilies, 61a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch OnHostMsgGetFontFamilies) 622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) IPC_END_MESSAGE_MAP() 632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return PP_ERROR_FAILED; 642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)int32_t FontMessageFilter::OnHostMsgGetFontFamilies( 672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ppapi::host::HostMessageContext* context) { 682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // OK to use "slow blocking" version since we're on the blocking pool. 692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) scoped_ptr<base::ListValue> list(GetFontList_SlowBlocking()); 702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string output; 722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) for (size_t i = 0; i < list->GetSize(); i++) { 732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::ListValue* cur_font; 742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!list->GetList(i, &cur_font)) 752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) continue; 762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Each entry is actually a list of (font name, localized name). 782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // We only care about the regular name. 792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string font_name; 802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!cur_font->GetString(0, &font_name)) 812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) continue; 822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Font names are separated with nulls. We also want an explicit null at 842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // the end of the string (Pepper strings aren't null terminated so since 852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // we specify there will be a null, it should actually be in the string). 862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) output.append(font_name); 872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) output.push_back(0); 882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) context->reply_msg = 912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PpapiPluginMsg_BrowserFontSingleton_GetFontFamiliesReply(output); 922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return PP_OK; 932a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 942a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} // namespace 962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)PepperBrowserFontSingletonHost::PepperBrowserFontSingletonHost( 982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) BrowserPpapiHost* host, 992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PP_Instance instance, 1002a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) PP_Resource resource) 1012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : ResourceHost(host->GetPpapiHost(), instance, resource) { 1022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) AddFilter(scoped_refptr<ppapi::host::ResourceMessageFilter>( 1032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) new FontMessageFilter())); 1042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 106a02191e04bc25c4935f804f2c080ae28663d096dBen MurdochPepperBrowserFontSingletonHost::~PepperBrowserFontSingletonHost() {} 1072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1082a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} // namespace content 109