doze: Fix dark theme issues

This brings SwitchBar widget inline with 10 and fixes the
theme issues when the dark mode is enabled.

Change-Id: I6909b77bc649eb9eb760bf01b46f66570363e9d9

doze/res/values/styles.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
      Copyright (C) 2015-2016 The CyanogenMod Project
-                   2017 The LineageOS Project
+                   2017-2020 The LineageOS Project
 
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
@@ -44,7 +44,11 @@
         <item name="android:layout">@layout/preference_material_settings</item>
     </style>
 
-    <style name="Theme.Main.PreferenceTheme" />
+    <style name="Theme.Main.PreferenceTheme" parent="@style/PreferenceThemeOverlay.SettingsBase">
+        <item name="preferenceCategoryTitleTextAppearance">
+            @style/Theme.Main.TextAppearance.CategoryTitle
+        </item>
+    </style>
 
     <style name="Theme.Main.SwitchPreferenceStyle" parent="@style/Theme.Main.PreferenceStyle">
         <item name="widgetLayout">@*android:layout/preference_widget_switch</item>
@@ -57,4 +61,12 @@
         <item name="android:trackTint">@color/switchbar_switch_track_tint</item>
         <item name="android:thumbTint">@color/switchbar_switch_thumb_tint</item>
     </style>
+
+    <style name="Theme.Main.TextAppearance.CategoryTitle"
+           parent="@*android:style/TextAppearance.DeviceDefault.Body2">
+        <item name="android:textAllCaps">true</item>
+        <item name="android:textSize">11sp</item>
+        <!-- 0.8 Spacing, 0.8/11 = 0.072727273 -->
+        <item name="android:letterSpacing">0.072727273</item>
+    </style>
 </resources>