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// Copyright 2024 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_EXO_WAYLAND_ZAURA_OUTPUT_MANAGER_V2_H_
#define COMPONENTS_EXO_WAYLAND_ZAURA_OUTPUT_MANAGER_V2_H_
#include <unordered_set>
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "components/exo/wayland/output_configuration_change.h"
struct wl_resource;
struct wl_client;
namespace exo::wayland {
class WaylandDisplayOutput;
inline constexpr uint32_t kZAuraOutputManagerV2Version = 1;
void bind_aura_output_manager_v2(wl_client* client,
void* data,
uint32_t version,
uint32_t id);
// This class is responsible for propagating information about display
// configuration state changes atomically to participating clients.
class AuraOutputManagerV2 {
public:
using ActiveOutputGetter = base::RepeatingCallback<WaylandOutputList()>;
// Used to manage the lifetime of client-bound handles to the aura output
// manager.
class UserData {
public:
UserData(AuraOutputManagerV2* output_manager,
wl_resource* outout_manager_resouce);
~UserData();
private:
const base::WeakPtr<AuraOutputManagerV2> output_manager_;
const raw_ptr<wl_resource> outout_manager_resouce_;
};
explicit AuraOutputManagerV2(ActiveOutputGetter active_output_getter);
AuraOutputManagerV2(const AuraOutputManagerV2&) = delete;
AuraOutputManagerV2& operator=(const AuraOutputManagerV2&) = delete;
virtual ~AuraOutputManagerV2();
// Called when the system's display configuration has changed. Returns true if
// changes were propagated to clients and a done event is necessary to
// complete the transaction.
bool OnDidProcessDisplayChanges(
const OutputConfigurationChange& configuration_change);
// Dispatches the activated event to all bound clients for the global
// `output`.
void SendOutputActivated(const WaylandDisplayOutput& output);
// Notifies clients of the end of the display configuration change
// transaction.
void SendDone();
// Called by UserData when the wrapped resource is created and destroyed
// respectively.
void Register(wl_resource* manager_resource);
void Unregister(wl_resource* manager_resource);
base::WeakPtr<AuraOutputManagerV2> GetWeakPtr();
private:
// Dispatches output metrics conditional on `changed_metrics` to all bound
// clients for the global `output`. Returns true if updates were dispatched.
bool SendOutputMetrics(const WaylandDisplayOutput& output,
uint32_t changed_metrics);
// Dispatches output metrics to a specific client bound to the output manager.
void SendOutputMetricsForClient(const WaylandDisplayOutput& output,
wl_resource* manager_resource);
// A set of resources for clients bound to the aura output manager global.
std::unordered_set<raw_ptr<wl_resource, CtnExperimental>> manager_resources_;
// Gets the currently active outputs tracked by the server.
const ActiveOutputGetter active_output_getter_;
base::WeakPtrFactory<AuraOutputManagerV2> weak_factory_{this};
};
} // namespace exo::wayland
#endif // COMPONENTS_EXO_WAYLAND_ZAURA_OUTPUT_MANAGER_V2_H_
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