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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.display;
import android.content.Context;
import android.hardware.display.DisplayManager;
import android.os.Handler;
import android.provider.DeviceConfig;
import android.provider.Settings;
import android.util.Log;
import android.view.Display;
import androidx.annotation.VisibleForTesting;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.core.TogglePreferenceController;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnStart;
import com.android.settingslib.core.lifecycle.events.OnStop;
import java.util.concurrent.Executor;
public class PeakRefreshRatePreferenceController extends TogglePreferenceController
implements LifecycleObserver, OnStart, OnStop {
@VisibleForTesting static float DEFAULT_REFRESH_RATE = 60f;
@VisibleForTesting float mPeakRefreshRate;
private static final String TAG = "RefreshRatePrefCtr";
private static final float INVALIDATE_REFRESH_RATE = -1f;
private final Handler mHandler;
private final IDeviceConfigChange mOnDeviceConfigChange;
private final DeviceConfigDisplaySettings mDeviceConfigDisplaySettings;
private Preference mPreference;
private interface IDeviceConfigChange {
void onDefaultRefreshRateChanged();
}
public PeakRefreshRatePreferenceController(Context context, String key) {
super(context, key);
mHandler = new Handler(context.getMainLooper());
mDeviceConfigDisplaySettings = new DeviceConfigDisplaySettings();
mOnDeviceConfigChange =
new IDeviceConfigChange() {
public void onDefaultRefreshRateChanged() {
updateState(mPreference);
}
};
final DisplayManager dm = mContext.getSystemService(DisplayManager.class);
final Display display = dm.getDisplay(Display.DEFAULT_DISPLAY);
if (display == null) {
Log.w(TAG, "No valid default display device");
mPeakRefreshRate = DEFAULT_REFRESH_RATE;
} else {
mPeakRefreshRate = findPeakRefreshRate(display.getSupportedModes());
}
Log.d(
TAG,
"DEFAULT_REFRESH_RATE : "
+ DEFAULT_REFRESH_RATE
+ " mPeakRefreshRate : "
+ mPeakRefreshRate);
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
mPreference = screen.findPreference(getPreferenceKey());
}
@Override
public int getAvailabilityStatus() {
if (mContext.getResources().getBoolean(R.bool.config_show_smooth_display)) {
return mPeakRefreshRate > DEFAULT_REFRESH_RATE ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
} else {
return UNSUPPORTED_ON_DEVICE;
}
}
@Override
public boolean isChecked() {
final float peakRefreshRate =
Settings.System.getFloat(
mContext.getContentResolver(),
Settings.System.PEAK_REFRESH_RATE,
getDefaultPeakRefreshRate());
return Math.round(peakRefreshRate) == Math.round(mPeakRefreshRate);
}
@Override
public boolean setChecked(boolean isChecked) {
final float peakRefreshRate = isChecked ? mPeakRefreshRate : DEFAULT_REFRESH_RATE;
Log.d(TAG, "setChecked to : " + peakRefreshRate);
return Settings.System.putFloat(
mContext.getContentResolver(), Settings.System.PEAK_REFRESH_RATE, peakRefreshRate);
}
@Override
public int getSliceHighlightMenuRes() {
return R.string.menu_key_display;
}
@Override
public void onStart() {
mDeviceConfigDisplaySettings.startListening();
}
@Override
public void onStop() {
mDeviceConfigDisplaySettings.stopListening();
}
@VisibleForTesting
float findPeakRefreshRate(Display.Mode[] modes) {
float peakRefreshRate = DEFAULT_REFRESH_RATE;
for (Display.Mode mode : modes) {
if (Math.round(mode.getRefreshRate()) > peakRefreshRate) {
peakRefreshRate = mode.getRefreshRate();
}
}
return peakRefreshRate;
}
private class DeviceConfigDisplaySettings
implements DeviceConfig.OnPropertiesChangedListener, Executor {
public void startListening() {
DeviceConfig.addOnPropertiesChangedListener(
DeviceConfig.NAMESPACE_DISPLAY_MANAGER,
this /* Executor */,
this /* Listener */);
}
public void stopListening() {
DeviceConfig.removeOnPropertiesChangedListener(this);
}
public float getDefaultPeakRefreshRate() {
float defaultPeakRefreshRate =
DeviceConfig.getFloat(
DeviceConfig.NAMESPACE_DISPLAY_MANAGER,
DisplayManager.DeviceConfig.KEY_PEAK_REFRESH_RATE_DEFAULT,
INVALIDATE_REFRESH_RATE);
Log.d(TAG, "DeviceConfig getDefaultPeakRefreshRate : " + defaultPeakRefreshRate);
return defaultPeakRefreshRate;
}
@Override
public void onPropertiesChanged(DeviceConfig.Properties properties) {
// Got notified if any property has been changed in NAMESPACE_DISPLAY_MANAGER. The
// KEY_PEAK_REFRESH_RATE_DEFAULT value could be added, changed, removed or unchanged.
// Just force a UI update for any case.
if (mOnDeviceConfigChange != null) {
mOnDeviceConfigChange.onDefaultRefreshRateChanged();
updateState(mPreference);
}
}
@Override
public void execute(Runnable runnable) {
if (mHandler != null) {
mHandler.post(runnable);
}
}
}
private float getDefaultPeakRefreshRate() {
float defaultPeakRefreshRate = mDeviceConfigDisplaySettings.getDefaultPeakRefreshRate();
if (defaultPeakRefreshRate == INVALIDATE_REFRESH_RATE) {
defaultPeakRefreshRate = (float) mContext.getResources().getInteger(
com.android.internal.R.integer.config_defaultPeakRefreshRate);
}
Log.d(TAG, "DeviceConfig getDefaultPeakRefreshRate : " + defaultPeakRefreshRate);
return defaultPeakRefreshRate;
}
}
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