Merge "Override the state description of volume seekbar." into udc-qpr-dev

src/com/android/settings/notification/SeekBarVolumizerFactory.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2023 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 android.content.Context;
+import android.net.Uri;
+import android.preference.SeekBarVolumizer;
+
+/**
+ * Testable wrapper around {@link SeekBarVolumizer} constructor.
+ */
+public class SeekBarVolumizerFactory {
+    private final Context mContext;
+
+    public SeekBarVolumizerFactory(Context context) {
+        mContext = context;
+    }
+
+    /**
+     * Creates a new SeekBarVolumizer.
+     *
+     * @param streamType of the audio manager.
+     * @param defaultUri of the volume.
+     * @param sbvc callback of the seekbar volumizer.
+     * @return a SeekBarVolumizer.
+     */
+    public SeekBarVolumizer create(int streamType, Uri defaultUri, SeekBarVolumizer.Callback sbvc) {
+        return new SeekBarVolumizer(mContext, streamType, defaultUri, sbvc);
+    }
+}

src/com/android/settings/notification/VolumeSeekBarPreference.java

@@ -37,6 +37,8 @@ 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) **/
@@ -47,8 +49,9 @@ public class VolumeSeekBarPreference extends SeekBarPreference {
 
     protected SeekBar mSeekBar;
     private int mStream;
+    private SeekBarVolumizer mVolumizer;
     @VisibleForTesting
-    SeekBarVolumizer mVolumizer;
+    SeekBarVolumizerFactory mSeekBarVolumizerFactory;
     private Callback mCallback;
     private Listener mListener;
     private ImageView mIconView;
@@ -62,30 +65,36 @@ public class VolumeSeekBarPreference extends SeekBarPreference {
     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) {
@@ -143,6 +152,7 @@ public class VolumeSeekBarPreference extends SeekBarPreference {
                 if (mCallback != null) {
                     mCallback.onStreamValueChanged(mStream, progress);
                 }
+                overrideSeekBarStateDescription(formatStateDescription(progress));
             }
             @Override
             public void onMuted(boolean muted, boolean zenMuted) {
@@ -170,7 +180,7 @@ public class VolumeSeekBarPreference extends SeekBarPreference {
         };
         final Uri sampleUri = mStream == AudioManager.STREAM_MUSIC ? getMediaVolumeUri() : null;
         if (mVolumizer == null) {
-            mVolumizer = new SeekBarVolumizer(getContext(), mStream, sampleUri, sbvc);
+            mVolumizer = mSeekBarVolumizerFactory.create(mStream, sampleUri, sbvc);
         }
         mVolumizer.start();
         mVolumizer.setSeekBar(mSeekBar);
@@ -216,6 +226,33 @@ public class VolumeSeekBarPreference extends SeekBarPreference {
                 + "/" + 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;