Change on/off values for Force Bold Text

Use On = 300 and Off = 0. Rename setting.

Bug: b/170966021, b/110991537
Test: builds and toggle works, atest
FontWeightAdjustmentPreferenceControllerTest

Change-Id: Icf5d15fc26266578ad78bae5b6f80d193e63c82d

src/com/android/settings/accessibility/FontWeightAdjustmentPreferenceController.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.graphics.fonts.FontStyle;
+import android.provider.Settings;
+
+import com.android.settings.core.TogglePreferenceController;
+
+/** PreferenceController for displaying all text in bold. */
+public class FontWeightAdjustmentPreferenceController extends TogglePreferenceController {
+    static final int BOLD_TEXT_ADJUSTMENT =
+            FontStyle.FONT_WEIGHT_BOLD - FontStyle.FONT_WEIGHT_NORMAL;
+
+    public FontWeightAdjustmentPreferenceController(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.FONT_WEIGHT_ADJUSTMENT, 0) == BOLD_TEXT_ADJUSTMENT;
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        return Settings.Secure.putInt(mContext.getContentResolver(),
+                Settings.Secure.FONT_WEIGHT_ADJUSTMENT, (isChecked ? BOLD_TEXT_ADJUSTMENT : 0));
+    }
+}