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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_VIZ_DEMO_HOST_DEMO_HOST_H_
#define COMPONENTS_VIZ_DEMO_HOST_DEMO_HOST_H_
#include <memory>
#include <vector>
#include "base/threading/thread.h"
#include "base/time/time.h"
#include "components/viz/common/surfaces/parent_local_surface_id_allocator.h"
#include "components/viz/host/host_display_client.h"
#include "components/viz/host/host_frame_sink_client.h"
#include "components/viz/host/host_frame_sink_manager.h"
#include "mojo/public/cpp/bindings/associated_remote.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "services/viz/privileged/mojom/compositing/display_private.mojom.h"
#include "services/viz/privileged/mojom/compositing/frame_sink_manager.mojom.h"
#include "ui/gfx/native_widget_types.h"
namespace demo {
class DemoClient;
// DemoHost is the 'host', i.e. the privileged component, responsible for
// managing the service, and establishing the connection between the clients and
// the service.
class DemoHost : public viz::HostFrameSinkClient {
public:
DemoHost(
gfx::AcceleratedWidget widget,
const gfx::Size& size,
mojo::PendingReceiver<viz::mojom::FrameSinkManagerClient> client_receiver,
mojo::PendingRemote<viz::mojom::FrameSinkManager>
frame_sink_manager_remote);
DemoHost(const DemoHost&) = delete;
DemoHost& operator=(const DemoHost&) = delete;
~DemoHost() override;
void Resize(const gfx::Size& size);
private:
void ResizeOnThread(const gfx::Size& size);
void EmbedClients(DemoClient* embedder_client, const gfx::Rect& child_bounds);
void Initialize(
mojo::PendingReceiver<viz::mojom::FrameSinkManagerClient> receiver,
mojo::PendingRemote<viz::mojom::FrameSinkManager> remote);
// viz::HostFrameSinkClient:
void OnFirstSurfaceActivation(const viz::SurfaceInfo& surface_info) override;
void OnFrameTokenChanged(uint32_t frame_token,
base::TimeTicks activation_time) override;
const gfx::AcceleratedWidget widget_;
gfx::Size size_;
viz::HostFrameSinkManager host_frame_sink_manager_;
mojo::AssociatedRemote<viz::mojom::DisplayPrivate> display_private_;
std::unique_ptr<viz::HostDisplayClient> display_client_;
viz::ParentLocalSurfaceIdAllocator allocator_;
std::unique_ptr<DemoClient> root_client_;
std::vector<std::unique_ptr<DemoClient>> embedded_clients_;
// The thread is created to demonstrate that the host can run on a separate
// thread (or even a separate process), since it communicates with the service
// and clients over mojo. The host does not need to have its own thread
// though.
base::Thread thread_;
};
} // namespace demo
#endif // COMPONENTS_VIZ_DEMO_HOST_DEMO_HOST_H_
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