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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_DISPLAY_DISPLAY_PREFS_H_
#define ASH_DISPLAY_DISPLAY_PREFS_H_
#include <stdint.h>
#include <array>
#include <optional>
#include "ash/ash_export.h"
#include "ash/public/cpp/session/session_observer.h"
#include "base/memory/raw_ptr.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
#include "ui/display/display.h"
#include "ui/display/display_layout.h"
class PrefRegistrySimple;
class PrefService;
namespace gfx {
class Point;
}
namespace display {
struct MixedMirrorModeParams;
struct TouchCalibrationData;
} // namespace display
namespace ash {
class DisplayPrefsTest;
// Manages display preference settings. Settings are stored in the local state
// for the session.
class ASH_EXPORT DisplayPrefs : public SessionObserver {
public:
// Registers the prefs associated with display settings.
static void RegisterLocalStatePrefs(PrefRegistrySimple* registry);
explicit DisplayPrefs(PrefService* local_state);
DisplayPrefs(const DisplayPrefs&) = delete;
DisplayPrefs& operator=(const DisplayPrefs&) = delete;
~DisplayPrefs() override;
// SessionObserver:
void OnFirstSessionStarted() override;
// Stores all current displays preferences or queues a request until
// LoadDisplayPreferences is called.
void MaybeStoreDisplayPrefs();
// Test helper methods.
void StoreDisplayRotationPrefsForTest(display::Display::Rotation rotation,
bool rotation_lock);
void StoreDisplayLayoutPrefForTest(const display::DisplayIdList& list,
const display::DisplayLayout& layout);
void StoreDisplayPowerStateForTest(chromeos::DisplayPowerState power_state);
void LoadTouchAssociationPreferenceForTest();
void LoadDisplayPrefsForTest();
void StoreLegacyTouchDataForTest(int64_t display_id,
const display::TouchCalibrationData& data);
// Parses the marshalled string data stored in local preferences for
// calibration points and populates |point_pair_quad| using the unmarshalled
// data. See TouchCalibrationData in Managed display info.
bool ParseTouchCalibrationStringForTest(
const std::string& str,
std::array<std::pair<gfx::Point, gfx::Point>, 4>* point_pair_quad);
// Stores the given |mixed_params| for tests. Clears stored parameters if
// |mixed_params| is null.
void StoreDisplayMixedMirrorModeParamsForTest(
const std::optional<display::MixedMirrorModeParams>& mixed_params);
// Checks if given `display_id` was saved to pref service before. Used to tell
// if a display is connected for the first time or not.
bool IsDisplayAvailableInPref(int64_t display_id) const;
protected:
friend class DisplayPrefsTest;
// Loads display preferences from |local_state_|.
void LoadDisplayPreferences();
private:
raw_ptr<PrefService> local_state_; // Non-owned and must out-live this.
bool store_requested_ = false;
};
} // namespace ash
#endif // ASH_DISPLAY_DISPLAY_PREFS_H_
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