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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.development;
import android.content.Context;
import android.hardware.display.DisplayManager;
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 androidx.preference.SwitchPreference;
import com.android.settings.R;
import com.android.settings.core.PreferenceControllerMixin;
import com.android.settingslib.development.DeveloperOptionsPreferenceController;
public class ForcePeakRefreshRatePreferenceController extends DeveloperOptionsPreferenceController
implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {
@VisibleForTesting
static float DEFAULT_REFRESH_RATE = 60f;
@VisibleForTesting
static float NO_CONFIG = 0f;
@VisibleForTesting
float mPeakRefreshRate;
private static final String TAG = "ForcePeakRefreshRateCtr";
private static final String PREFERENCE_KEY = "pref_key_peak_refresh_rate";
public ForcePeakRefreshRatePreferenceController(Context context) {
super(context);
final DisplayManager dm = context.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 String getPreferenceKey() {
return PREFERENCE_KEY;
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
mPreference = screen.findPreference(getPreferenceKey());
}
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
final boolean isEnabled = (Boolean) newValue;
forcePeakRefreshRate(isEnabled);
return true;
}
@Override
public void updateState(Preference preference) {
((SwitchPreference) mPreference).setChecked(isForcePeakRefreshRateEnabled());
}
@Override
public boolean isAvailable() {
if (mContext.getResources().getBoolean(R.bool.config_show_smooth_display)) {
return mPeakRefreshRate > DEFAULT_REFRESH_RATE;
} else {
return false;
}
}
@Override
protected void onDeveloperOptionsSwitchDisabled() {
super.onDeveloperOptionsSwitchDisabled();
Settings.System.putFloat(mContext.getContentResolver(),
Settings.System.MIN_REFRESH_RATE, NO_CONFIG);
((SwitchPreference) mPreference).setChecked(false);
}
@VisibleForTesting
void forcePeakRefreshRate(boolean enable) {
final float peakRefreshRate = enable ? mPeakRefreshRate : NO_CONFIG;
Settings.System.putFloat(mContext.getContentResolver(),
Settings.System.MIN_REFRESH_RATE, peakRefreshRate);
}
boolean isForcePeakRefreshRateEnabled() {
final float peakRefreshRate = Settings.System.getFloat(mContext.getContentResolver(),
Settings.System.MIN_REFRESH_RATE, NO_CONFIG);
return peakRefreshRate >= mPeakRefreshRate;
}
private 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;
}
}
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