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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.
#ifndef COMPONENTS_HTML_VIEWER_GLOBAL_STATE_H_
#define COMPONENTS_HTML_VIEWER_GLOBAL_STATE_H_
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/threading/thread.h"
#include "build/build_config.h"
#include "components/html_viewer/blink_settings.h"
#include "components/html_viewer/discardable_memory_allocator.h"
#include "components/mus/gles2/mojo_gpu_memory_buffer_manager.h"
#include "components/mus/gles2/raster_thread_helper.h"
#include "components/mus/public/interfaces/gpu.mojom.h"
#include "components/resource_provider/public/cpp/resource_loader.h"
#include "mojo/services/tracing/public/cpp/tracing_impl.h"
#include "skia/ext/refptr.h"
#include "ui/gfx/geometry/size.h"
namespace font_service {
class FontLoader;
}
namespace mojo {
class ApplicationImpl;
class Shell;
}
namespace ui {
namespace mojo {
class UIInit;
}
}
namespace scheduler {
class RendererScheduler;
}
namespace html_viewer {
class BlinkPlatformImpl;
class MediaFactory;
// GlobalState encapsulates the necessary state needed by HTMLViewer. Some
// objects are created immediately in the constructor, otherwise not until
// InitIfNecessary() is invoked.
//
// GlobalState can be initialized in two distinct ways:
// . headless: this is determined by the command line, but can be forced by way
// of InitHeadless().
// . with a ui: this is done via InitIfNecessary().
class GlobalState {
public:
explicit GlobalState(mojo::ApplicationImpl* app);
~GlobalState();
// Inits with the specified screen size and device pixel ratio.
// NOTE: we wait to complete setup until the device pixel ratio is available
// as ResourceBundle uses the device pixel ratio during initialization.
void InitIfNecessary(const gfx::Size& screen_size_in_pixels,
float device_pixel_ratio);
bool did_init() const { return did_init_; }
const gfx::Size& screen_size_in_pixels() const {
return screen_size_in_pixels_;
}
float device_pixel_ratio() const { return device_pixel_ratio_; }
scoped_refptr<base::SingleThreadTaskRunner> compositor_thread() {
return compositor_thread_.task_runner();
}
gles2::RasterThreadHelper* raster_thread_helper() {
return &raster_thread_helper_;
}
mus::MojoGpuMemoryBufferManager* gpu_memory_buffer_manager() {
return &gpu_memory_buffer_manager_;
}
const mus::mojom::GpuInfo* GetGpuInfo();
MediaFactory* media_factory() { return media_factory_.get(); }
BlinkSettings* blink_settings() { return blink_settings_.get(); }
void set_blink_settings(BlinkSettings* blink_settings) {
blink_settings_.reset(blink_settings);
}
private:
// Callback for |gpu_service_|->GetGpuInfo().
void GetGpuInfoCallback(mus::mojom::GpuInfoPtr gpu_info);
// App for HTMLViewer, not the document's app.
// WARNING: do not expose this. It's too easy to use the wrong one.
// HTMLDocument should be using the application it creates, not this one.
mojo::ApplicationImpl* app_;
resource_provider::ResourceLoader resource_loader_;
// True once we've completed init.
bool did_init_;
float device_pixel_ratio_;
gfx::Size screen_size_in_pixels_;
scoped_ptr<ui::mojo::UIInit> ui_init_;
// Skia requires that we have one of these. Unlike the one used in chrome,
// this doesn't use purgable shared memory. Instead, it tries to free the
// oldest unlocked chunks on allocation.
//
// TODO(erg): In the long run, delete this allocator and get the real shared
// memory based purging allocator working here.
DiscardableMemoryAllocator discardable_memory_allocator_;
mojo::TracingImpl tracing_;
scoped_ptr<scheduler::RendererScheduler> renderer_scheduler_;
scoped_ptr<BlinkPlatformImpl> blink_platform_;
base::Thread compositor_thread_;
gles2::RasterThreadHelper raster_thread_helper_;
mus::MojoGpuMemoryBufferManager gpu_memory_buffer_manager_;
mus::mojom::GpuPtr gpu_service_;
mus::mojom::GpuInfoPtr gpu_info_;
scoped_ptr<MediaFactory> media_factory_;
scoped_ptr<BlinkSettings> blink_settings_;
#if defined(OS_LINUX) && !defined(OS_ANDROID)
skia::RefPtr<font_service::FontLoader> font_loader_;
#endif
DISALLOW_COPY_AND_ASSIGN(GlobalState);
};
} // namespace html_viewer
#endif // COMPONENTS_HTML_VIEWER_GLOBAL_STATE_H_
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