src/com/android/settings/notification/VolumeSeekBarPreference.java - LeafOS-Project/android_packages_apps_Settings - Gitiles

 /*
  * Copyright (C) 2014 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.notification;

 import static com.android.internal.jank.InteractionJankMonitor.CUJ_SETTINGS_SLIDER;

 import android.content.ContentResolver;
 import android.content.Context;
 import android.media.AudioManager;
 import android.net.Uri;
 import android.preference.SeekBarVolumizer;
 import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.view.View;
 import android.widget.ImageView;
 import android.widget.SeekBar;
 import android.widget.TextView;

 import androidx.annotation.VisibleForTesting;
 import androidx.preference.PreferenceViewHolder;

 import com.android.internal.jank.InteractionJankMonitor;
 import com.android.settings.R;
 import com.android.settings.widget.SeekBarPreference;

 import java.text.NumberFormat;
 import java.util.Locale;
 import java.util.Objects;

 /** A slider preference that directly controls an audio stream volume (no dialog) **/
 public class VolumeSeekBarPreference extends SeekBarPreference {
     private static final String TAG = "VolumeSeekBarPreference";

     private final InteractionJankMonitor mJankMonitor = InteractionJankMonitor.getInstance();

     protected SeekBar mSeekBar;
     private int mStream;
     private SeekBarVolumizer mVolumizer;
     @VisibleForTesting
     SeekBarVolumizerFactory mSeekBarVolumizerFactory;
     private Callback mCallback;
     private Listener mListener;
     private ImageView mIconView;
     private TextView mSuppressionTextView;
     private TextView mTitle;
     private String mSuppressionText;
     private boolean mMuted;
     private boolean mZenMuted;
     private int mIconResId;
     private int mMuteIconResId;
     private boolean mStopped;
     @VisibleForTesting
     AudioManager mAudioManager;
     private Locale mLocale;
     private NumberFormat mNumberFormat;

     public VolumeSeekBarPreference(Context context, AttributeSet attrs, int defStyleAttr,
             int defStyleRes) {
         super(context, attrs, defStyleAttr, defStyleRes);
         setLayoutResource(R.layout.preference_volume_slider);
         mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
         mSeekBarVolumizerFactory = new SeekBarVolumizerFactory(context);
     }

     public VolumeSeekBarPreference(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
         setLayoutResource(R.layout.preference_volume_slider);
         mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
         mSeekBarVolumizerFactory = new SeekBarVolumizerFactory(context);
     }

     public VolumeSeekBarPreference(Context context, AttributeSet attrs) {
         super(context, attrs);
         setLayoutResource(R.layout.preference_volume_slider);
         mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
         mSeekBarVolumizerFactory = new SeekBarVolumizerFactory(context);
     }

     public VolumeSeekBarPreference(Context context) {
         super(context);
         setLayoutResource(R.layout.preference_volume_slider);
         mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
         mSeekBarVolumizerFactory = new SeekBarVolumizerFactory(context);
     }

     public void setStream(int stream) {
         mStream = stream;
         setMax(mAudioManager.getStreamMaxVolume(mStream));
         // Use getStreamMinVolumeInt for non-public stream type
         // eg: AudioManager.STREAM_BLUETOOTH_SCO
         setMin(mAudioManager.getStreamMinVolumeInt(mStream));
         setProgress(mAudioManager.getStreamVolume(mStream));
     }

     public void setCallback(Callback callback) {
         mCallback = callback;
     }

     public void setListener(Listener listener) {
         mListener = listener;
     }

     public void onActivityResume() {
         if (mStopped) {
             init();
         }
     }

     public void onActivityPause() {
         mStopped = true;
         if (mVolumizer != null) {
             mVolumizer.stop();
             mVolumizer = null;
         }
     }

     @Override
     public void onBindViewHolder(PreferenceViewHolder view) {
         super.onBindViewHolder(view);
         mSeekBar = (SeekBar) view.findViewById(com.android.internal.R.id.seekbar);
         mIconView = (ImageView) view.findViewById(com.android.internal.R.id.icon);
         mSuppressionTextView = (TextView) view.findViewById(R.id.suppression_text);
         mTitle = (TextView) view.findViewById(com.android.internal.R.id.title);
         init();
     }

     protected void init() {
         if (mSeekBar == null) return;
         // It's unnecessary to set up relevant volumizer configuration if preference is disabled.
         if (!isEnabled()) {
             mSeekBar.setEnabled(false);
             return;
         }
         final SeekBarVolumizer.Callback sbvc = new SeekBarVolumizer.Callback() {
             @Override
             public void onSampleStarting(SeekBarVolumizer sbv) {
                 if (mCallback != null) {
                     mCallback.onSampleStarting(sbv);
                 }
             }
             @Override
             public void onProgressChanged(SeekBar seekBar, int progress, boolean fromTouch) {
                 if (mCallback != null) {
                     mCallback.onStreamValueChanged(mStream, progress);
                 }
                 overrideSeekBarStateDescription(formatStateDescription(progress));
             }
             @Override
             public void onMuted(boolean muted, boolean zenMuted) {
                 if (mMuted == muted && mZenMuted == zenMuted) return;
                 mMuted = muted;
                 mZenMuted = zenMuted;
                 updateIconView();
                 if (mListener != null) {
                     mListener.onUpdateMuteState();
                 }
             }
             @Override
             public void onStartTrackingTouch(SeekBarVolumizer sbv) {
                 if (mCallback != null) {
                     mCallback.onStartTrackingTouch(sbv);
                 }
                 mJankMonitor.begin(InteractionJankMonitor.Configuration.Builder
                         .withView(CUJ_SETTINGS_SLIDER, mSeekBar)
                         .setTag(getKey()));
             }
             @Override
             public void onStopTrackingTouch(SeekBarVolumizer sbv) {
                 mJankMonitor.end(CUJ_SETTINGS_SLIDER);
             }
         };
         final Uri sampleUri = mStream == AudioManager.STREAM_MUSIC ? getMediaVolumeUri() : null;
         if (mVolumizer == null) {
             mVolumizer = mSeekBarVolumizerFactory.create(mStream, sampleUri, sbvc);
         }
         mVolumizer.start();
         mVolumizer.setSeekBar(mSeekBar);
         updateIconView();
         updateSuppressionText();
         if (mListener != null) {
             mListener.onUpdateMuteState();
         }
     }

     protected void updateIconView() {
         if (mIconView == null) return;
         if (mIconResId != 0) {
             mIconView.setImageResource(mIconResId);
         } else if (mMuteIconResId != 0 && isMuted()) {
             mIconView.setImageResource(mMuteIconResId);
         } else {
             mIconView.setImageDrawable(getIcon());
         }
     }

     public void showIcon(int resId) {
         // Instead of using setIcon, which will trigger listeners, this just decorates the
         // preference temporarily with a new icon.
         if (mIconResId == resId) return;
         mIconResId = resId;
         updateIconView();
     }

     public void setMuteIcon(int resId) {
         if (mMuteIconResId == resId) return;
         mMuteIconResId = resId;
         updateIconView();
     }

     private Uri getMediaVolumeUri() {
         return Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://"
                 + getContext().getPackageName()
                 + "/" + R.raw.media_volume);
     }

     @VisibleForTesting
     CharSequence formatStateDescription(int progress) {
         // This code follows the same approach in ProgressBar.java, but it rounds down the percent
         // to match it with what the talkback feature says after any progress change. (b/285458191)
         // Cache the locale-appropriate NumberFormat.  Configuration locale is guaranteed
         // non-null, so the first time this is called we will always get the appropriate
         // NumberFormat, then never regenerate it unless the locale changes on the fly.
         Locale curLocale = getContext().getResources().getConfiguration().getLocales().get(0);
         if (mLocale == null || !mLocale.equals(curLocale)) {
             mLocale = curLocale;
             mNumberFormat = NumberFormat.getPercentInstance(mLocale);
         }
         return mNumberFormat.format(getPercent(progress));
     }

     @VisibleForTesting
     double getPercent(float progress) {
         final float maxProgress = getMax();
         final float minProgress = getMin();
         final float diffProgress = maxProgress - minProgress;
         if (diffProgress <= 0.0f) {
             return 0.0f;
         }
         final float percent = (progress - minProgress) / diffProgress;
         return Math.floor(Math.max(0.0f, Math.min(1.0f, percent)) * 100) / 100;
     }

     public void setSuppressionText(String text) {
         if (Objects.equals(text, mSuppressionText)) return;
         mSuppressionText = text;
         updateSuppressionText();
     }

     protected boolean isMuted() {
         return mMuted && !mZenMuted;
     }

     protected void updateSuppressionText() {
         if (mSuppressionTextView != null && mSeekBar != null) {
             mSuppressionTextView.setText(mSuppressionText);
             final boolean showSuppression = !TextUtils.isEmpty(mSuppressionText);
             mSuppressionTextView.setVisibility(showSuppression ? View.VISIBLE : View.GONE);
         }
     }

     /**
      * Update content description of title to improve talkback announcements.
      */
     protected void updateContentDescription(CharSequence contentDescription) {
         if (mTitle == null) return;
         mTitle.setContentDescription(contentDescription);
     }

     protected void setAccessibilityLiveRegion(int mode) {
         if (mTitle == null) return;
         mTitle.setAccessibilityLiveRegion(mode);
     }

     public interface Callback {
         void onSampleStarting(SeekBarVolumizer sbv);
         void onStreamValueChanged(int stream, int progress);

         /**
          * Callback reporting that the seek bar is start tracking.
          */
         void onStartTrackingTouch(SeekBarVolumizer sbv);
     }

     /**
      * Listener to view updates in volumeSeekbarPreference.
      */
     public interface Listener {

         /**
          * Listener to mute state updates.
          */
         void onUpdateMuteState();
     }
 }
	/*
	* Copyright (C) 2014 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.notification;

	import static com.android.internal.jank.InteractionJankMonitor.CUJ_SETTINGS_SLIDER;

	import android.content.ContentResolver;
	import android.content.Context;
	import android.media.AudioManager;
	import android.net.Uri;
	import android.preference.SeekBarVolumizer;
	import android.text.TextUtils;
	import android.util.AttributeSet;
	import android.view.View;
	import android.widget.ImageView;
	import android.widget.SeekBar;
	import android.widget.TextView;

	import androidx.annotation.VisibleForTesting;
	import androidx.preference.PreferenceViewHolder;

	import com.android.internal.jank.InteractionJankMonitor;
	import com.android.settings.R;
	import com.android.settings.widget.SeekBarPreference;

	import java.text.NumberFormat;
	import java.util.Locale;
	import java.util.Objects;

	/ A slider preference that directly controls an audio stream volume (no dialog) /
	public class VolumeSeekBarPreference extends SeekBarPreference {
	private static final String TAG = "VolumeSeekBarPreference";

	private final InteractionJankMonitor mJankMonitor = InteractionJankMonitor.getInstance();

	protected SeekBar mSeekBar;
	private int mStream;
	private SeekBarVolumizer mVolumizer;
	@VisibleForTesting
	SeekBarVolumizerFactory mSeekBarVolumizerFactory;
	private Callback mCallback;
	private Listener mListener;
	private ImageView mIconView;
	private TextView mSuppressionTextView;
	private TextView mTitle;
	private String mSuppressionText;
	private boolean mMuted;
	private boolean mZenMuted;
	private int mIconResId;
	private int mMuteIconResId;
	private boolean mStopped;
	@VisibleForTesting
	AudioManager mAudioManager;
	private Locale mLocale;
	private NumberFormat mNumberFormat;

	public VolumeSeekBarPreference(Context context, AttributeSet attrs, int defStyleAttr,
	int defStyleRes) {
	super(context, attrs, defStyleAttr, defStyleRes);
	setLayoutResource(R.layout.preference_volume_slider);
	mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
	mSeekBarVolumizerFactory = new SeekBarVolumizerFactory(context);
	}

	public VolumeSeekBarPreference(Context context, AttributeSet attrs, int defStyleAttr) {
	super(context, attrs, defStyleAttr);
	setLayoutResource(R.layout.preference_volume_slider);
	mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
	mSeekBarVolumizerFactory = new SeekBarVolumizerFactory(context);
	}

	public VolumeSeekBarPreference(Context context, AttributeSet attrs) {
	super(context, attrs);
	setLayoutResource(R.layout.preference_volume_slider);
	mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
	mSeekBarVolumizerFactory = new SeekBarVolumizerFactory(context);
	}

	public VolumeSeekBarPreference(Context context) {
	super(context);
	setLayoutResource(R.layout.preference_volume_slider);
	mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
	mSeekBarVolumizerFactory = new SeekBarVolumizerFactory(context);
	}

	public void setStream(int stream) {
	mStream = stream;
	setMax(mAudioManager.getStreamMaxVolume(mStream));
	// Use getStreamMinVolumeInt for non-public stream type
	// eg: AudioManager.STREAM_BLUETOOTH_SCO
	setMin(mAudioManager.getStreamMinVolumeInt(mStream));
	setProgress(mAudioManager.getStreamVolume(mStream));
	}

	public void setCallback(Callback callback) {
	mCallback = callback;
	}

	public void setListener(Listener listener) {
	mListener = listener;
	}

	public void onActivityResume() {
	if (mStopped) {
	init();
	}
	}

	public void onActivityPause() {
	mStopped = true;
	if (mVolumizer != null) {
	mVolumizer.stop();
	mVolumizer = null;
	}
	}

	@Override
	public void onBindViewHolder(PreferenceViewHolder view) {
	super.onBindViewHolder(view);
	mSeekBar = (SeekBar) view.findViewById(com.android.internal.R.id.seekbar);
	mIconView = (ImageView) view.findViewById(com.android.internal.R.id.icon);
	mSuppressionTextView = (TextView) view.findViewById(R.id.suppression_text);
	mTitle = (TextView) view.findViewById(com.android.internal.R.id.title);
	init();
	}

	protected void init() {
	if (mSeekBar == null) return;
	// It's unnecessary to set up relevant volumizer configuration if preference is disabled.
	if (!isEnabled()) {
	mSeekBar.setEnabled(false);
	return;
	}
	final SeekBarVolumizer.Callback sbvc = new SeekBarVolumizer.Callback() {
	@Override
	public void onSampleStarting(SeekBarVolumizer sbv) {
	if (mCallback != null) {
	mCallback.onSampleStarting(sbv);
	}
	}
	@Override
	public void onProgressChanged(SeekBar seekBar, int progress, boolean fromTouch) {
	if (mCallback != null) {
	mCallback.onStreamValueChanged(mStream, progress);
	}
	overrideSeekBarStateDescription(formatStateDescription(progress));
	}
	@Override
	public void onMuted(boolean muted, boolean zenMuted) {
	if (mMuted == muted && mZenMuted == zenMuted) return;
	mMuted = muted;
	mZenMuted = zenMuted;
	updateIconView();
	if (mListener != null) {
	mListener.onUpdateMuteState();
	}
	}
	@Override
	public void onStartTrackingTouch(SeekBarVolumizer sbv) {
	if (mCallback != null) {
	mCallback.onStartTrackingTouch(sbv);
	}
	mJankMonitor.begin(InteractionJankMonitor.Configuration.Builder
	.withView(CUJ_SETTINGS_SLIDER, mSeekBar)
	.setTag(getKey()));
	}
	@Override
	public void onStopTrackingTouch(SeekBarVolumizer sbv) {
	mJankMonitor.end(CUJ_SETTINGS_SLIDER);
	}
	};
	final Uri sampleUri = mStream == AudioManager.STREAM_MUSIC ? getMediaVolumeUri() : null;
	if (mVolumizer == null) {
	mVolumizer = mSeekBarVolumizerFactory.create(mStream, sampleUri, sbvc);
	}
	mVolumizer.start();
	mVolumizer.setSeekBar(mSeekBar);
	updateIconView();
	updateSuppressionText();
	if (mListener != null) {
	mListener.onUpdateMuteState();
	}
	}

	protected void updateIconView() {
	if (mIconView == null) return;
	if (mIconResId != 0) {
	mIconView.setImageResource(mIconResId);
	} else if (mMuteIconResId != 0 && isMuted()) {
	mIconView.setImageResource(mMuteIconResId);
	} else {
	mIconView.setImageDrawable(getIcon());
	}
	}

	public void showIcon(int resId) {
	// Instead of using setIcon, which will trigger listeners, this just decorates the
	// preference temporarily with a new icon.
	if (mIconResId == resId) return;
	mIconResId = resId;
	updateIconView();
	}

	public void setMuteIcon(int resId) {
	if (mMuteIconResId == resId) return;
	mMuteIconResId = resId;
	updateIconView();
	}

	private Uri getMediaVolumeUri() {
	return Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://"
	+ getContext().getPackageName()
	+ "/" + R.raw.media_volume);
	}

	@VisibleForTesting
	CharSequence formatStateDescription(int progress) {
	// This code follows the same approach in ProgressBar.java, but it rounds down the percent
	// to match it with what the talkback feature says after any progress change. (b/285458191)
	// Cache the locale-appropriate NumberFormat. Configuration locale is guaranteed
	// non-null, so the first time this is called we will always get the appropriate
	// NumberFormat, then never regenerate it unless the locale changes on the fly.
	Locale curLocale = getContext().getResources().getConfiguration().getLocales().get(0);
	if (mLocale == null \|\| !mLocale.equals(curLocale)) {
	mLocale = curLocale;
	mNumberFormat = NumberFormat.getPercentInstance(mLocale);
	}
	return mNumberFormat.format(getPercent(progress));
	}

	@VisibleForTesting
	double getPercent(float progress) {
	final float maxProgress = getMax();
	final float minProgress = getMin();
	final float diffProgress = maxProgress - minProgress;
	if (diffProgress <= 0.0f) {
	return 0.0f;
	}
	final float percent = (progress - minProgress) / diffProgress;
	return Math.floor(Math.max(0.0f, Math.min(1.0f, percent)) * 100) / 100;
	}

	public void setSuppressionText(String text) {
	if (Objects.equals(text, mSuppressionText)) return;
	mSuppressionText = text;
	updateSuppressionText();
	}

	protected boolean isMuted() {
	return mMuted && !mZenMuted;
	}

	protected void updateSuppressionText() {
	if (mSuppressionTextView != null && mSeekBar != null) {
	mSuppressionTextView.setText(mSuppressionText);
	final boolean showSuppression = !TextUtils.isEmpty(mSuppressionText);
	mSuppressionTextView.setVisibility(showSuppression ? View.VISIBLE : View.GONE);
	}
	}

	/**
	* Update content description of title to improve talkback announcements.
	*/
	protected void updateContentDescription(CharSequence contentDescription) {
	if (mTitle == null) return;
	mTitle.setContentDescription(contentDescription);
	}

	protected void setAccessibilityLiveRegion(int mode) {
	if (mTitle == null) return;
	mTitle.setAccessibilityLiveRegion(mode);
	}

	public interface Callback {
	void onSampleStarting(SeekBarVolumizer sbv);
	void onStreamValueChanged(int stream, int progress);

	/**
	* Callback reporting that the seek bar is start tracking.
	*/
	void onStartTrackingTouch(SeekBarVolumizer sbv);
	}

	/**
	* Listener to view updates in volumeSeekbarPreference.
	*/
	public interface Listener {

	/**
	* Listener to mute state updates.
	*/
	void onUpdateMuteState();
	}
	}