Add Bold Text to Accessibility settings screen

Bug: b/110991537
Test: setting appears, atest ForceBoldTextPreferenceControllerTest
Change-Id: I001b078cafd2b6da62929ffa1a7a09ddb28c9854

src/com/android/settings/accessibility/ForceBoldTextPreferenceController.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2020 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.content.Context;
+import android.content.res.Configuration;
+import android.provider.Settings;
+
+import com.android.settings.core.TogglePreferenceController;
+
+/** PreferenceController for displaying all text in bold. */
+public class ForceBoldTextPreferenceController extends TogglePreferenceController {
+
+    public ForceBoldTextPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+
+    @Override
+    public boolean isChecked() {
+        return Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.FORCE_BOLD_TEXT, Configuration.FORCE_BOLD_TEXT_NO)
+                == Configuration.FORCE_BOLD_TEXT_YES;
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        return Settings.Secure.putInt(mContext.getContentResolver(),
+                Settings.Secure.FORCE_BOLD_TEXT,
+                (isChecked ? Configuration.FORCE_BOLD_TEXT_YES : Configuration.FORCE_BOLD_TEXT_NO));
+    }
+}