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// 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/html_viewer/global_state.h"
#include <stddef.h>
#include <string>
#include <utility>
#include "base/bind.h"
#include "base/command_line.h"
#include "base/logging.h"
#include "build/build_config.h"
#include "cc/blink/web_layer_impl.h"
#include "cc/layers/layer_settings.h"
#include "components/html_viewer/blink_platform_impl.h"
#include "components/html_viewer/blink_settings_impl.h"
#include "components/html_viewer/media_factory.h"
#include "components/scheduler/renderer/renderer_scheduler.h"
#include "gin/v8_initializer.h"
#include "mojo/application/public/cpp/application_impl.h"
#include "mojo/logging/init_logging.h"
#include "mojo/services/tracing/public/cpp/tracing_impl.h"
#include "third_party/WebKit/public/web/WebKit.h"
#include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/ui_base_paths.h"
#include "ui/gfx/display.h"
#include "ui/mojo/init/ui_init.h"
#include "v8/include/v8.h"
#if defined(OS_LINUX) && !defined(OS_ANDROID)
#include "components/font_service/public/cpp/font_loader.h"
#endif
namespace html_viewer {
namespace {
// Disables support for (unprefixed) Encrypted Media Extensions.
const char kDisableEncryptedMedia[] = "disable-encrypted-media";
// Specifies the flags passed to JS engine.
const char kJavaScriptFlags[] = "js-flags";
size_t kDesiredMaxMemory = 20 * 1024 * 1024;
// Paths resources are loaded from.
const char kResourceResourcesPak[] = "html_viewer.pak";
#if defined(V8_USE_EXTERNAL_STARTUP_DATA)
const char kResourceNativesBlob[] = "natives_blob.bin";
const char kResourceSnapshotBlob[] = "snapshot_blob.bin";
#endif
std::set<std::string> GetResourcePaths() {
std::set<std::string> paths;
paths.insert(kResourceResourcesPak);
#if defined(V8_USE_EXTERNAL_STARTUP_DATA)
paths.insert(kResourceNativesBlob);
paths.insert(kResourceSnapshotBlob);
#endif
return paths;
}
// TODO(sky): convert to using DisplayService.
std::vector<gfx::Display> DisplaysFromSizeAndScale(
const gfx::Size& screen_size_in_pixels,
float device_pixel_ratio) {
std::vector<gfx::Display> displays(1);
displays[0].set_id(2000);
displays[0].SetScaleAndBounds(device_pixel_ratio,
gfx::Rect(screen_size_in_pixels));
return displays;
}
} // namespace
GlobalState::GlobalState(mojo::ApplicationImpl* app)
: app_(app),
resource_loader_(app, GetResourcePaths()),
did_init_(false),
device_pixel_ratio_(1.f),
discardable_memory_allocator_(kDesiredMaxMemory),
compositor_thread_("compositor thread"),
blink_settings_(new BlinkSettingsImpl()) {
tracing_.Initialize(app);
}
GlobalState::~GlobalState() {
if (blink_platform_) {
renderer_scheduler_->Shutdown();
blink::shutdown();
}
#if defined(OS_LINUX) && !defined(OS_ANDROID)
if (font_loader_.get()) {
SkFontConfigInterface::SetGlobal(nullptr);
// FontLoader is ref counted. We need to explicitly shutdown the background
// thread, otherwise the background thread may be shutdown after the app is
// torn down, when we're in a bad state.
font_loader_->Shutdown();
}
#endif
}
void GlobalState::InitIfNecessary(const gfx::Size& screen_size_in_pixels,
float device_pixel_ratio) {
if (did_init_)
return;
DCHECK_NE(0.f, device_pixel_ratio);
did_init_ = true;
device_pixel_ratio_ = device_pixel_ratio;
screen_size_in_pixels_ = screen_size_in_pixels;
if (!resource_loader_.BlockUntilLoaded()) {
// Assume on error we're being shut down.
app_->Quit();
return;
}
#if defined(OS_LINUX) && !defined(OS_ANDROID)
font_loader_ = skia::AdoptRef(new font_service::FontLoader(app_));
SkFontConfigInterface::SetGlobal(font_loader_.get());
#endif
ui_init_.reset(new ui::mojo::UIInit(
DisplaysFromSizeAndScale(screen_size_in_pixels_, device_pixel_ratio_)));
base::DiscardableMemoryAllocator::SetInstance(&discardable_memory_allocator_);
app_->ConnectToService("mojo:mus", &gpu_service_);
gpu_service_->GetGpuInfo(base::Bind(&GlobalState::GetGpuInfoCallback,
base::Unretained(this)));
// Use new animation system (cc::AnimationHost).
cc::LayerSettings layer_settings;
layer_settings.use_compositor_animation_timelines = true;
cc_blink::WebLayerImpl::SetLayerSettings(layer_settings);
blink::WebRuntimeFeatures::enableCompositorAnimationTimelines(true);
renderer_scheduler_ = scheduler::RendererScheduler::Create();
blink_platform_.reset(
new BlinkPlatformImpl(this, app_, renderer_scheduler_.get()));
#if defined(V8_USE_EXTERNAL_STARTUP_DATA)
gin::V8Initializer::LoadV8SnapshotFromFD(
resource_loader_.ReleaseFile(kResourceSnapshotBlob).TakePlatformFile(),
0u, 0u);
gin::V8Initializer::LoadV8NativesFromFD(
resource_loader_.ReleaseFile(kResourceNativesBlob).TakePlatformFile(), 0u,
0u);
#endif
blink::initialize(blink_platform_.get());
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
base::File pak_file = resource_loader_.ReleaseFile(kResourceResourcesPak);
bool initialize_ui = true;
#if defined(COMPONENT_BUILD)
if (command_line->HasSwitch("single-process"))
initialize_ui = false;
#endif
if (initialize_ui) {
ui::RegisterPathProvider();
base::File pak_file_2 = pak_file.Duplicate();
ui::ResourceBundle::InitSharedInstanceWithPakFileRegion(
std::move(pak_file_2), base::MemoryMappedFile::Region::kWholeFile);
}
mojo::InitLogging();
if (command_line->HasSwitch(kDisableEncryptedMedia))
blink::WebRuntimeFeatures::enableEncryptedMedia(false);
blink_settings_->Init();
// TODO(sky): why is this always using 100?
ui::ResourceBundle::GetSharedInstance().AddDataPackFromFile(
std::move(pak_file), ui::SCALE_FACTOR_100P);
compositor_thread_.Start();
media_factory_.reset(
new MediaFactory(compositor_thread_.task_runner(), app_->shell()));
if (command_line->HasSwitch(kJavaScriptFlags)) {
std::string flags(command_line->GetSwitchValueASCII(kJavaScriptFlags));
v8::V8::SetFlagsFromString(flags.c_str(), static_cast<int>(flags.size()));
}
}
// TODO(rjkroege): These two functions probably do not interoperate correctly
// with MUS.
const mus::mojom::GpuInfo* GlobalState::GetGpuInfo() {
if (gpu_service_)
CHECK(gpu_service_.WaitForIncomingResponse()) <<"Get GPU info failed!";
return gpu_info_.get();
}
void GlobalState::GetGpuInfoCallback(mus::mojom::GpuInfoPtr gpu_info) {
CHECK(gpu_info);
gpu_info_ = std::move(gpu_info);
gpu_service_.reset();
}
} // namespace html_viewer
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