| /* |
| * Copyright (C) 2015 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.annotation.Nullable; |
| import android.app.settings.SettingsEnums; |
| import android.content.Context; |
| import android.content.res.Configuration; |
| import android.content.res.Resources; |
| import android.os.Bundle; |
| import android.view.Display; |
| |
| import com.android.settings.R; |
| import com.android.settings.search.BaseSearchIndexProvider; |
| import com.android.settings.search.Indexable; |
| import com.android.settings.search.SearchIndexableRaw; |
| import com.android.settingslib.display.DisplayDensityConfiguration; |
| import com.android.settingslib.display.DisplayDensityUtils; |
| import com.android.settingslib.search.SearchIndexable; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Preference fragment used to control screen zoom. |
| */ |
| @SearchIndexable(forTarget = SearchIndexable.ALL & ~SearchIndexable.ARC) |
| public class ScreenZoomSettings extends PreviewSeekBarPreferenceFragment { |
| |
| private int mDefaultDensity; |
| private int[] mValues; |
| |
| @Override |
| protected int getActivityLayoutResId() { |
| return R.layout.screen_zoom_activity; |
| } |
| |
| @Override |
| protected int[] getPreviewSampleResIds() { |
| return getContext().getResources().getBoolean( |
| R.bool.config_enable_extra_screen_zoom_preview) |
| ? new int[]{ |
| R.layout.screen_zoom_preview_1, |
| R.layout.screen_zoom_preview_2, |
| R.layout.screen_zoom_preview_settings} |
| : new int[]{R.layout.screen_zoom_preview_1}; |
| } |
| |
| @Override |
| public void onCreate(@Nullable Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| final DisplayDensityUtils density = new DisplayDensityUtils(getContext()); |
| |
| final int initialIndex = density.getCurrentIndex(); |
| if (initialIndex < 0) { |
| // Failed to obtain default density, which means we failed to |
| // connect to the window manager service. Just use the current |
| // density and don't let the user change anything. |
| final int densityDpi = getResources().getDisplayMetrics().densityDpi; |
| mValues = new int[]{densityDpi}; |
| mEntries = new String[]{getString(DisplayDensityUtils.SUMMARY_DEFAULT)}; |
| mInitialIndex = 0; |
| mDefaultDensity = densityDpi; |
| } else { |
| mValues = density.getValues(); |
| mEntries = density.getEntries(); |
| mInitialIndex = initialIndex; |
| mDefaultDensity = density.getDefaultDensity(); |
| } |
| |
| getActivity().setTitle(R.string.screen_zoom_title); |
| } |
| |
| @Override |
| protected Configuration createConfig(Configuration origConfig, int index) { |
| // Populate the sample layouts. |
| final Configuration config = new Configuration(origConfig); |
| config.densityDpi = mValues[index]; |
| return config; |
| } |
| |
| /** |
| * Persists the selected density and sends a configuration change. |
| */ |
| @Override |
| protected void commit() { |
| final int densityDpi = mValues[mCurrentIndex]; |
| if (densityDpi == mDefaultDensity) { |
| DisplayDensityConfiguration.clearForcedDisplayDensity(Display.DEFAULT_DISPLAY); |
| } else { |
| DisplayDensityConfiguration.setForcedDisplayDensity(Display.DEFAULT_DISPLAY, densityDpi); |
| } |
| } |
| |
| @Override |
| public int getHelpResource() { |
| return R.string.help_url_display_size; |
| } |
| |
| @Override |
| public int getMetricsCategory() { |
| return SettingsEnums.DISPLAY_SCREEN_ZOOM; |
| } |
| |
| /** Index provider used to expose this fragment in search. */ |
| public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER = |
| new BaseSearchIndexProvider() { |
| @Override |
| public List<SearchIndexableRaw> getRawDataToIndex(Context context, |
| boolean enabled) { |
| final Resources res = context.getResources(); |
| final SearchIndexableRaw data = new SearchIndexableRaw(context); |
| data.title = res.getString(R.string.screen_zoom_title); |
| data.key = "screen_zoom_settings"; |
| data.screenTitle = res.getString(R.string.screen_zoom_title); |
| data.keywords = res.getString(R.string.screen_zoom_keywords); |
| |
| final List<SearchIndexableRaw> result = new ArrayList<>(1); |
| result.add(data); |
| return result; |
| } |
| }; |
| } |