SettingsLib: Improve segmented buttons UI

- It's used in the ZenMode dialog

Change-Id: Ia7fdc048eab5b56c1219493da6f06f79bdc2002b

packages/SettingsLib/res/color/settingslib_segmented_button_text_selector.xml

@@ -16,6 +16,6 @@
 -->
 
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:state_selected="true" android:color="?android:attr/textColorPrimary"/>
-    <item android:alpha="0.58" android:color="?android:attr/colorForeground"/>
+    <item android:state_selected="true" android:color="?android:attr/colorControlActivated"/>
+    <item android:alpha="0.58" android:color="?android:attr/colorControlNormal"/>
 </selector>

packages/SettingsLib/res/drawable/settingslib_segmented_buttons_background.xml

@@ -16,5 +16,5 @@
 
 <shape xmlns:android="http://schemas.android.com/apk/res/android" >
     <corners android:radius="@dimen/settingslib_borderless_button_radius" />
-    <solid android:color="?android:attr/colorPrimaryDark" />
+    <solid android:color="?android:attr/colorButtonNormal" />
 </shape>

packages/SettingsLib/res/values/settingslib_segmented_button.xml

@@ -15,7 +15,7 @@
 -->
 <resources>
     <dimen name="settingslib_segmented_button_spacing">0dp</dimen>
-    <dimen name="settingslib_borderless_button_radius">2dp</dimen>
+    <dimen name="settingslib_borderless_button_radius">28dp</dimen>
     <style name="SettingsLibTextAppearanceSegmentedButton">
         <item name="android:textSize">16sp</item>
         <item name="android:fontFamily">@*android:string/config_bodyFontFamilyMedium</item>