Add shadow to text on keyguard

Fixes: 132274011
Test: visual
Change-Id: Ic5ef60f71a8cdf9946c688d0a33aa542b6cb1b98

packages/SystemUI/res-keyguard/values/styles.xml

@@ -65,6 +65,8 @@
         <item name="android:fontFamily">@*android:string/config_headlineFontFamily</item>
         <item name="android:fontFeatureSettings">@*android:string/config_headlineFontFeatureSettings</item>
         <item name="android:ellipsize">none</item>
+        <item name="android:shadowColor">@color/keyguard_shadow_color</item>
+        <item name="android:shadowRadius">@dimen/keyguard_shadow_radius</item>
     </style>
     <style name="widget_title_bold">
         <item name="android:textStyle">bold</item>
@@ -72,6 +74,8 @@
         <item name="android:paddingBottom">@dimen/widget_vertical_padding_clock</item>
         <item name="android:fontFamily">@*android:string/config_headlineFontFamily</item>
         <item name="android:ellipsize">none</item>
+        <item name="android:shadowColor">@color/keyguard_shadow_color</item>
+        <item name="android:shadowRadius">@dimen/keyguard_shadow_radius</item>
     </style>
     <style name="widget_small_bold">
         <item name="android:textStyle">bold</item>
@@ -79,6 +83,8 @@
         <item name="android:paddingBottom">@dimen/bottom_text_spacing_digital</item>
         <item name="android:fontFamily">@*android:string/config_headlineFontFamily</item>
         <item name="android:ellipsize">none</item>
+        <item name="android:shadowColor">@color/keyguard_shadow_color</item>
+        <item name="android:shadowRadius">@dimen/keyguard_shadow_radius</item>
     </style>
 
     <style name="BouncerSecurityContainer">
@@ -108,6 +114,8 @@
         <item name="android:ellipsize">end</item>
         <item name="android:maxLines">2</item>
         <item name="android:fontFamily">@*android:string/config_headlineFontFamily</item>
+        <item name="android:shadowColor">@color/keyguard_shadow_color</item>
+        <item name="android:shadowRadius">@dimen/keyguard_shadow_radius</item>
     </style>
 
     <style name="TextAppearance.Keyguard.Secondary">
@@ -122,6 +130,8 @@
         <item name="android:textSize">16sp</item>
         <item name="android:maxLines">1</item>
         <item name="android:textColor">?attr/wallpaperTextColor</item>
+        <item name="android:shadowColor">@color/keyguard_shadow_color</item>
+        <item name="android:shadowRadius">@dimen/keyguard_shadow_radius</item>
     </style>
 
 </resources>

packages/SystemUI/res/layout/keyguard_bottom_area.xml

@@ -26,7 +26,6 @@
 
     <LinearLayout
         android:id="@+id/keyguard_indication_area"
-        android:forceHasOverlappingRendering="false"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_marginBottom="@dimen/keyguard_indication_margin_bottom"

packages/SystemUI/res/values/colors.xml

@@ -55,6 +55,9 @@
 
     <color name="keyguard_affordance">#ffffffff</color>
 
+    <!-- Shadows under the clock, date and other keyguard text fields -->
+    <color name="keyguard_shadow_color">#B2000000</color>
+
     <!-- The color of the legacy notification background -->
     <color name="notification_legacy_background_color">#ff1a1a1a</color>
 

packages/SystemUI/res/values/dimens.xml

@@ -181,6 +181,9 @@
     <!-- The padding on the bottom of the notifications on the keyguard -->
     <dimen name="keyguard_indication_bottom_padding">12sp</dimen>
 
+    <!-- Shadows under the clock, date and other keyguard text fields -->
+    <dimen name="keyguard_shadow_radius">5</dimen>
+
     <!-- Minimum layouted height of a notification in the statusbar-->
     <dimen name="min_notification_layout_height">48dp</dimen>
 

packages/SystemUI/src/com/android/keyguard/KeyguardStatusView.java

@@ -319,11 +319,6 @@ public class KeyguardStatusView extends GridLayout implements
         refreshFormat();
     }
 
-    @Override
-    public boolean hasOverlappingRendering() {
-        return false;
-    }
-
     public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
         pw.println("KeyguardStatusView:");
         pw.println("  mOwnerInfo: " + (mOwnerInfo == null