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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_POLICY_DISPLAY_DISPLAY_RESOLUTION_HANDLER_H_
#define CHROME_BROWSER_ASH_POLICY_DISPLAY_DISPLAY_RESOLUTION_HANDLER_H_
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "chrome/browser/ash/policy/display/display_settings_handler.h"
#include "chromeos/crosapi/mojom/cros_display_config.mojom-forward.h"
namespace policy {
// Implements DeviceDisplayResolution device policy.
//
// Whenever there is a change in the display configration, any new display will
// be resized according to the policy (only if the policy is enabled and the
// display supports specified resolution and scale factor).
//
// Whenever there is a change in |kDeviceDisplayResolution| setting from
// CrosSettings, the new policy is reapplied to all displays.
//
// If the specified resolution or scale factor is not supported by some display,
// the resolution won't change.
//
// Once resolution or scale factor for some display was set by this policy it
// won't be reapplied until next reboot or policy change (i.e. user can manually
// override the settings for that display via settings page).
class DisplayResolutionHandler : public DisplaySettingsPolicyHandler {
public:
DisplayResolutionHandler();
DisplayResolutionHandler(const DisplayResolutionHandler&) = delete;
DisplayResolutionHandler& operator=(const DisplayResolutionHandler&) = delete;
~DisplayResolutionHandler() override;
// DisplaySettingsPolicyHandler
const char* SettingName() override;
void OnSettingUpdate() override;
void ApplyChanges(
crosapi::mojom::CrosDisplayConfigController* cros_display_config,
const std::vector<crosapi::mojom::DisplayUnitInfoPtr>& info_list)
override;
private:
struct InternalDisplaySettings;
struct ExternalDisplaySettings;
bool policy_enabled_ = false;
bool recommended_ = false;
std::unique_ptr<ExternalDisplaySettings> external_display_settings_;
std::unique_ptr<InternalDisplaySettings> internal_display_settings_;
std::set<std::string> resized_display_ids_;
};
} // namespace policy
#endif // CHROME_BROWSER_ASH_POLICY_DISPLAY_DISPLAY_RESOLUTION_HANDLER_H_
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