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Unified Diff: components/font_service/public/cpp/font_service_thread.cc

Issue 1274743004: Sandbox html_viewer on Linux. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Style stuff. Created 5 years, 4 months ago
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Index: components/font_service/public/cpp/font_service_thread.cc
diff --git a/components/font_service/public/cpp/font_service_thread.cc b/components/font_service/public/cpp/font_service_thread.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e7f2c89ee228ef3e08f738c36a9aba1cea5e675d
--- /dev/null
+++ b/components/font_service/public/cpp/font_service_thread.cc
@@ -0,0 +1,158 @@
+// Copyright 2015 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 "components/font_service/public/cpp/font_service_thread.h"
+
+#include "base/bind.h"
+#include "base/files/file.h"
+#include "base/synchronization/waitable_event.h"
+#include "components/font_service/public/cpp/mapped_font_file.h"
+#include "mojo/common/message_pump_mojo.h"
+#include "mojo/platform_handle/platform_handle_functions.h"
+
+namespace font_service {
+namespace internal {
+
+namespace {
+const char kFontThreadName[] = "Font_Proxy_Thread";
+} // namespace
+
+FontServiceThread::FontServiceThread(FontServicePtr font_service)
+ : base::Thread(kFontThreadName),
+ font_service_info_(font_service.PassInterface().Pass()) {
+ base::Thread::Options options;
+ options.message_pump_factory =
+ base::Bind(&mojo::common::MessagePumpMojo::Create);
+ StartWithOptions(options);
+}
+
+bool FontServiceThread::MatchFamilyName(
+ const char family_name[],
+ SkTypeface::Style requested_style,
+ SkFontConfigInterface::FontIdentity* out_font_identity,
+ SkString* out_family_name,
+ SkTypeface::Style* out_style) {
+ DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId());
+
+ bool out_valid = false;
+ // This proxies to the other thread, which proxies to mojo. Only on the reply
+ // from mojo do we return from this.
+ base::WaitableEvent done_event(false, false);
+ task_runner()->PostTask(
+ FROM_HERE,
+ base::Bind(&FontServiceThread::MatchFamilyNameImpl, this, &done_event,
+ family_name, requested_style, &out_valid, out_font_identity,
+ out_family_name, out_style));
+ done_event.Wait();
+
+ return out_valid;
+}
+
+scoped_refptr<MappedFontFile> FontServiceThread::OpenStream(
+ const SkFontConfigInterface::FontIdentity& identity) {
+ DCHECK_NE(GetThreadId(), base::PlatformThread::CurrentId());
+
+ base::File stream_file;
+ // This proxies to the other thread, which proxies to mojo. Only on the reply
+ // from mojo do we return from this.
+ base::WaitableEvent done_event(false, false);
+ task_runner()->PostTask(FROM_HERE,
+ base::Bind(&FontServiceThread::OpenStreamImpl, this,
+ &done_event, &stream_file, identity.fID));
+ done_event.Wait();
+
+ if (!stream_file.IsValid()) {
+ NOTREACHED();
+ return nullptr;
+ }
+
+ // Converts the file to out internal type.
+ scoped_refptr<MappedFontFile> mapped_font_file =
+ new MappedFontFile(identity.fID);
+ if (!mapped_font_file->Initialize(stream_file.Pass()))
+ return nullptr;
+
+ return mapped_font_file;
+}
+
+FontServiceThread::~FontServiceThread() {
+ Stop();
+}
+
+void FontServiceThread::MatchFamilyNameImpl(
+ base::WaitableEvent* done_event,
+ const char family_name[],
+ SkTypeface::Style requested_style,
+ bool* out_valid,
+ SkFontConfigInterface::FontIdentity* out_font_identity,
+ SkString* out_family_name,
+ SkTypeface::Style* out_style) {
+ DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId());
+
+ font_service_->MatchFamilyName(
+ mojo::String(family_name), static_cast<TypefaceStyle>(requested_style),
+ base::Bind(&FontServiceThread::OnMatchFamilyNameComplete, this,
+ done_event, out_valid, out_font_identity, out_family_name,
+ out_style));
+}
+
+void FontServiceThread::OnMatchFamilyNameComplete(
+ base::WaitableEvent* done_event,
+ bool* out_valid,
+ SkFontConfigInterface::FontIdentity* out_font_identity,
+ SkString* out_family_name,
+ SkTypeface::Style* out_style,
+ FontIdentityPtr font_identity,
+ mojo::String family_name,
+ TypefaceStyle style) {
+ DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId());
+
+ *out_valid = font_identity;
+ if (font_identity) {
+ out_font_identity->fID = font_identity->id;
+ out_font_identity->fTTCIndex = font_identity->ttc_index;
+ out_font_identity->fString = font_identity->str_representation.data();
+ // TODO(erg): fStyle isn't set. This is rather odd, however it matches the
+ // behaviour of the current Linux IPC version.
+
+ *out_family_name = family_name.data();
+ *out_style = static_cast<SkTypeface::Style>(style);
+ }
+
+ done_event->Signal();
+}
+
+void FontServiceThread::OpenStreamImpl(base::WaitableEvent* done_event,
+ base::File* output_file,
+ const uint32_t id_number) {
+ DCHECK_EQ(GetThreadId(), base::PlatformThread::CurrentId());
+
+ font_service_->OpenStream(
+ id_number, base::Bind(&FontServiceThread::OnOpenStreamComplete, this,
+ done_event, output_file));
+}
+
+void FontServiceThread::OnOpenStreamComplete(base::WaitableEvent* done_event,
+ base::File* output_file,
+ mojo::ScopedHandle handle) {
+ if (handle.is_valid()) {
+ MojoPlatformHandle platform_handle;
+ CHECK(MojoExtractPlatformHandle(handle.release().value(),
+ &platform_handle) == MOJO_RESULT_OK);
+ *output_file = base::File(platform_handle).Pass();
+ }
+
+ done_event->Signal();
+}
+
+void FontServiceThread::Init() {
+ font_service_.Bind(font_service_info_.Pass());
+}
+
+void FontServiceThread::CleanUp() {
+ font_service_.reset();
+}
+
+} // namespace internal
+} // namespace font_service
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