1 /* 2 * Copyright (C) 2022 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings.accessibility; 18 19 import android.content.Context; 20 import android.content.res.Resources; 21 22 import androidx.preference.PreferenceScreen; 23 24 import com.android.settings.R; 25 import com.android.settings.accessibility.ListDialogPreference.OnValueChangedListener; 26 27 /** Preference controller for captioning foreground opacity. */ 28 public class CaptioningForegroundOpacityController extends BaseCaptioningCustomController 29 implements OnValueChangedListener { 30 CaptioningForegroundOpacityController(Context context, String preferenceKey)31 public CaptioningForegroundOpacityController(Context context, String preferenceKey) { 32 super(context, preferenceKey); 33 } 34 35 @Override displayPreference(PreferenceScreen screen)36 public void displayPreference(PreferenceScreen screen) { 37 super.displayPreference(screen); 38 final ColorPreference preference = screen.findPreference(getPreferenceKey()); 39 final Resources res = mContext.getResources(); 40 final int[] opacityValues = res.getIntArray(R.array.captioning_opacity_selector_values); 41 final String[] opacityTitles = res.getStringArray( 42 R.array.captioning_opacity_selector_titles); 43 preference.setTitles(opacityTitles); 44 preference.setValues(opacityValues); 45 final int foregroundColor = mCaptionHelper.getForegroundColor(); 46 final int opacity = CaptionUtils.parseOpacity(foregroundColor); 47 preference.setValue(opacity); 48 preference.setOnValueChangedListener(this); 49 } 50 51 @Override onValueChanged(ListDialogPreference preference, int value)52 public void onValueChanged(ListDialogPreference preference, int value) { 53 final int foregroundColor = mCaptionHelper.getForegroundColor(); 54 final int color = CaptionUtils.parseColor(foregroundColor); 55 final int merged = CaptionUtils.mergeColorOpacity(color, value); 56 mCaptionHelper.setForegroundColor(merged); 57 mCaptionHelper.setEnabled(true); 58 } 59 } 60