| // Copyright (c) 2013 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 "content/browser/renderer_host/pepper/pepper_truetype_font_list_host.h" |
| |
| #include <stdint.h> |
| |
| #include <algorithm> |
| |
| #include "base/macros.h" |
| #include "base/numerics/safe_conversions.h" |
| #include "content/browser/renderer_host/pepper/pepper_truetype_font_list.h" |
| #include "content/common/font_list.h" |
| #include "content/public/browser/browser_ppapi_host.h" |
| #include "ppapi/host/dispatch_host_message.h" |
| #include "ppapi/host/host_message_context.h" |
| #include "ppapi/host/resource_message_filter.h" |
| #include "ppapi/proxy/ppapi_messages.h" |
| |
| namespace content { |
| |
| namespace { |
| |
| // Handles the font list request on the blocking pool. |
| class TrueTypeFontMessageFilter : public ppapi::host::ResourceMessageFilter { |
| public: |
| TrueTypeFontMessageFilter(); |
| |
| // ppapi::host::ResourceMessageFilter implementation. |
| scoped_refptr<base::TaskRunner> OverrideTaskRunnerForMessage( |
| const IPC::Message& msg) override; |
| int32_t OnResourceMessageReceived( |
| const IPC::Message& msg, |
| ppapi::host::HostMessageContext* context) override; |
| |
| private: |
| ~TrueTypeFontMessageFilter() override; |
| |
| // Message handlers. |
| int32_t OnHostMsgGetFontFamilies(ppapi::host::HostMessageContext* context); |
| int32_t OnHostMsgGetFontsInFamily(ppapi::host::HostMessageContext* context, |
| const std::string& family); |
| |
| DISALLOW_COPY_AND_ASSIGN(TrueTypeFontMessageFilter); |
| }; |
| |
| TrueTypeFontMessageFilter::TrueTypeFontMessageFilter() {} |
| |
| TrueTypeFontMessageFilter::~TrueTypeFontMessageFilter() {} |
| |
| scoped_refptr<base::TaskRunner> |
| TrueTypeFontMessageFilter::OverrideTaskRunnerForMessage( |
| const IPC::Message& msg) { |
| // Use the font list SequencedTaskRunner to get the font list (currently the |
| // only message) since getting the font list is non-threadsafe on Linux (for |
| // versions of Pango predating 2013). |
| return GetFontListTaskRunner(); |
| } |
| |
| int32_t TrueTypeFontMessageFilter::OnResourceMessageReceived( |
| const IPC::Message& msg, |
| ppapi::host::HostMessageContext* context) { |
| PPAPI_BEGIN_MESSAGE_MAP(TrueTypeFontMessageFilter, msg) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL_0( |
| PpapiHostMsg_TrueTypeFontSingleton_GetFontFamilies, |
| OnHostMsgGetFontFamilies) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL( |
| PpapiHostMsg_TrueTypeFontSingleton_GetFontsInFamily, |
| OnHostMsgGetFontsInFamily) |
| PPAPI_END_MESSAGE_MAP() |
| return PP_ERROR_FAILED; |
| } |
| |
| int32_t TrueTypeFontMessageFilter::OnHostMsgGetFontFamilies( |
| ppapi::host::HostMessageContext* context) { |
| // OK to use "slow blocking" version since we're on the blocking pool. |
| std::vector<std::string> font_families; |
| GetFontFamilies_SlowBlocking(&font_families); |
| // Sort the names in case the host platform returns them out of order. |
| std::sort(font_families.begin(), font_families.end()); |
| |
| context->reply_msg = |
| PpapiPluginMsg_TrueTypeFontSingleton_GetFontFamiliesReply(font_families); |
| return base::checked_cast<int32_t>(font_families.size()); |
| } |
| |
| int32_t TrueTypeFontMessageFilter::OnHostMsgGetFontsInFamily( |
| ppapi::host::HostMessageContext* context, |
| const std::string& family) { |
| // OK to use "slow blocking" version since we're on the blocking pool. |
| std::vector<ppapi::proxy::SerializedTrueTypeFontDesc> fonts_in_family; |
| GetFontsInFamily_SlowBlocking(family, &fonts_in_family); |
| |
| context->reply_msg = |
| PpapiPluginMsg_TrueTypeFontSingleton_GetFontsInFamilyReply( |
| fonts_in_family); |
| return base::checked_cast<int32_t>(fonts_in_family.size()); |
| } |
| |
| } // namespace |
| |
| PepperTrueTypeFontListHost::PepperTrueTypeFontListHost(BrowserPpapiHost* host, |
| PP_Instance instance, |
| PP_Resource resource) |
| : ResourceHost(host->GetPpapiHost(), instance, resource) { |
| AddFilter(scoped_refptr<ppapi::host::ResourceMessageFilter>( |
| new TrueTypeFontMessageFilter())); |
| } |
| |
| PepperTrueTypeFontListHost::~PepperTrueTypeFontListHost() {} |
| |
| } // namespace content |