Add turn screen darker fragment in a11y settings text and display

Accessibility settings category restructure, add turn screen darker fragment for related accessibility services. Bug: 174829936 Test: atest TurnScreenDarkerFragmentTest, atest AccessibilitySettingsTest Change-Id: I8aef7a0b5a6d407813aadb22d7ade5103533efa4
2021-01-28 16:19:55 +08:00
parent 74eb482fba
commit 359665c3b0
6 changed files with 258 additions and 73 deletions
--- a/src/com/android/settings/accessibility/TurnScreenDarkerFragment.java
+++ b/src/com/android/settings/accessibility/TurnScreenDarkerFragment.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2021 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.accessibility;
+
+import android.app.settings.SettingsEnums;
+import android.content.Context;
+import android.hardware.display.ColorDisplayManager;
+import android.os.Bundle;
+import android.provider.Settings;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceCategory;
+
+import com.android.settings.R;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.display.DarkUIPreferenceController;
+import com.android.settings.search.BaseSearchIndexProvider;
+import com.android.settingslib.search.SearchIndexable;
+
+/** Accessibility settings for turning screen darker. */
+@SearchIndexable(forTarget = SearchIndexable.ALL & ~SearchIndexable.ARC)
+public class TurnScreenDarkerFragment extends DashboardFragment {
+
+    private static final String TAG = "TurnDarkerFragment";
+
+    private static final String CATEGORY_EXPERIMENTAL = "experimental_category";
+
+    // Preferences
+    private static final String TOGGLE_INVERSION_PREFERENCE = "toggle_inversion_preference";
+    private static final String DISPLAY_REDUCE_BRIGHT_COLORS_PREFERENCE_SCREEN =
+            "reduce_bright_colors_preference";
+
+    private Preference mToggleInversionPreference;
+    private Preference mReduceBrightColorsPreference;
+
+    @Override
+    public int getMetricsCategory() {
+        return SettingsEnums.ACCESSIBILITY_TURN_SCREEN_DARKER;
+    }
+
+
+    @Override
+    public void onCreate(Bundle icicle) {
+        super.onCreate(icicle);
+        initializeAllPreferences();
+        updateSystemPreferences();
+    }
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        use(DarkUIPreferenceController.class).setParentFragment(this);
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.accessibility_turn_screen_darker;
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    private void initializeAllPreferences() {
+        // Display inversion.
+        mToggleInversionPreference = findPreference(TOGGLE_INVERSION_PREFERENCE);
+
+        // Reduce brightness.
+        mReduceBrightColorsPreference =
+                findPreference(DISPLAY_REDUCE_BRIGHT_COLORS_PREFERENCE_SCREEN);
+    }
+
+    /**
+     * Updates preferences related to system configurations.
+     */
+    private void updateSystemPreferences() {
+        final PreferenceCategory experimentalCategory = getPreferenceScreen().findPreference(
+                CATEGORY_EXPERIMENTAL);
+        if (ColorDisplayManager.isColorTransformAccelerated(getContext())) {
+            mToggleInversionPreference.setSummary(AccessibilityUtil.getSummary(
+                    getContext(), Settings.Secure.ACCESSIBILITY_DISPLAY_INVERSION_ENABLED));
+            mReduceBrightColorsPreference.setSummary(AccessibilityUtil.getSummary(
+                    getContext(), Settings.Secure.REDUCE_BRIGHT_COLORS_ACTIVATED));
+            getPreferenceScreen().removePreference(experimentalCategory);
+        } else {
+            // Move following preferences to experimental category if device don't supports HWC
+            // hardware-accelerated color transform.
+            getPreferenceScreen().removePreference(mToggleInversionPreference);
+            getPreferenceScreen().removePreference(mReduceBrightColorsPreference);
+            experimentalCategory.addPreference(mToggleInversionPreference);
+            experimentalCategory.addPreference(mReduceBrightColorsPreference);
+        }
+    }
+
+    public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
+            new BaseSearchIndexProvider(R.xml.accessibility_turn_screen_darker);
+}