Add shadow to dream overlay home controls button.

This changelist utilizes the DoubleShadowIconDrawable to add a shadow to
the home control button in the dream overlay.

Fixes: 277238160
Test: Verified shadow rendering and theming is working on button.
Change-Id: I13943a60b09daf2737168e566057bd40b221ea56
diff --git a/packages/SystemUI/res/drawable/dream_overlay_bottom_affordance_bg.xml b/packages/SystemUI/res/drawable/dream_overlay_bottom_affordance_bg.xml
index 3b67ddd..bab604d 100644
--- a/packages/SystemUI/res/drawable/dream_overlay_bottom_affordance_bg.xml
+++ b/packages/SystemUI/res/drawable/dream_overlay_bottom_affordance_bg.xml
@@ -18,9 +18,7 @@
 -->
 <shape
     xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:androidprv="http://schemas.android.com/apk/prv/res/android"
     android:shape="rectangle">
-  <solid android:color="?androidprv:attr/colorSurface"/>
   <size
       android:width="@dimen/dream_overlay_bottom_affordance_height"
       android:height="@dimen/dream_overlay_bottom_affordance_width"/>
diff --git a/packages/SystemUI/res/layout/dream_overlay_home_controls_chip.xml b/packages/SystemUI/res/layout/dream_overlay_home_controls_chip.xml
index 0cd0623..e8a48c7 100644
--- a/packages/SystemUI/res/layout/dream_overlay_home_controls_chip.xml
+++ b/packages/SystemUI/res/layout/dream_overlay_home_controls_chip.xml
@@ -21,8 +21,6 @@
     android:layout_width="@dimen/dream_overlay_bottom_affordance_width"
     android:layout_gravity="bottom|start"
     android:padding="@dimen/dream_overlay_bottom_affordance_padding"
-    android:background="@drawable/dream_overlay_bottom_affordance_bg"
     android:scaleType="fitCenter"
     android:tint="?android:attr/textColorPrimary"
-    android:src="@drawable/controls_icon"
     android:contentDescription="@string/quick_controls_title" />
diff --git a/packages/SystemUI/res/values/dimens.xml b/packages/SystemUI/res/values/dimens.xml
index 2024dae..a2e3ff4b 100644
--- a/packages/SystemUI/res/values/dimens.xml
+++ b/packages/SystemUI/res/values/dimens.xml
@@ -1641,6 +1641,19 @@
     <dimen name="dream_overlay_bottom_affordance_height">64dp</dimen>
     <dimen name="dream_overlay_bottom_affordance_width">64dp</dimen>
     <dimen name="dream_overlay_bottom_affordance_radius">32dp</dimen>
+    <dimen name="dream_overlay_bottom_affordance_key_text_shadow_dx">0.5dp</dimen>
+    <dimen name="dream_overlay_bottom_affordance_key_text_shadow_dy">0.5dp</dimen>
+    <dimen name="dream_overlay_bottom_affordance_key_text_shadow_radius">1dp</dimen>
+    <item name="dream_overlay_bottom_affordance_key_shadow_alpha" format="float" type="dimen">
+        0.35
+    </item>
+    <dimen name="dream_overlay_bottom_affordance_ambient_text_shadow_dx">0.5dp</dimen>
+    <dimen name="dream_overlay_bottom_affordance_ambient_text_shadow_dy">0.5dp</dimen>
+    <dimen name="dream_overlay_bottom_affordance_ambient_text_shadow_radius">2dp</dimen>
+    <item name="dream_overlay_bottom_affordance_ambient_shadow_alpha" format="float" type="dimen">
+        0.4
+    </item>
+    <dimen name="dream_overlay_bottom_affordance_inset">1dp</dimen>
     <dimen name="dream_overlay_bottom_affordance_padding">14dp</dimen>
     <dimen name="dream_overlay_complication_clock_time_text_size">86dp</dimen>
     <dimen name="dream_overlay_complication_clock_subtitle_text_size">24sp</dimen>
diff --git a/packages/SystemUI/shared/src/com/android/systemui/shared/shadow/DoubleShadowIconDrawable.kt b/packages/SystemUI/shared/src/com/android/systemui/shared/shadow/DoubleShadowIconDrawable.kt
index 19d0a3d..6b9274c 100644
--- a/packages/SystemUI/shared/src/com/android/systemui/shared/shadow/DoubleShadowIconDrawable.kt
+++ b/packages/SystemUI/shared/src/com/android/systemui/shared/shadow/DoubleShadowIconDrawable.kt
@@ -15,6 +15,7 @@
  */
 package com.android.systemui.shared.shadow
 
+import android.content.res.ColorStateList
 import android.graphics.BlendMode
 import android.graphics.Canvas
 import android.graphics.Color
@@ -106,6 +107,14 @@
         mIconDrawable.draw(canvas)
     }
 
+    override fun getIntrinsicHeight(): Int {
+        return mCanvasSize
+    }
+
+    override fun getIntrinsicWidth(): Int {
+        return mCanvasSize
+    }
+
     override fun getOpacity(): Int {
         return PixelFormat.TRANSPARENT
     }
@@ -121,4 +130,8 @@
     override fun setTint(color: Int) {
         mIconDrawable.setTint(color)
     }
+
+    override fun setTintList(tint: ColorStateList?) {
+        mIconDrawable.setTintList(tint)
+    }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/complication/DreamHomeControlsComplication.java b/packages/SystemUI/src/com/android/systemui/complication/DreamHomeControlsComplication.java
index f973aee..4d99282 100644
--- a/packages/SystemUI/src/com/android/systemui/complication/DreamHomeControlsComplication.java
+++ b/packages/SystemUI/src/com/android/systemui/complication/DreamHomeControlsComplication.java
@@ -24,6 +24,7 @@
 
 import android.content.Context;
 import android.content.Intent;
+import android.content.res.Resources;
 import android.util.Log;
 import android.view.View;
 import android.widget.ImageView;
@@ -39,6 +40,7 @@
 import com.android.systemui.controls.management.ControlsListingController;
 import com.android.systemui.controls.ui.ControlsActivity;
 import com.android.systemui.controls.ui.ControlsUiController;
+import com.android.systemui.dagger.qualifiers.Main;
 import com.android.systemui.dagger.qualifiers.SystemUser;
 import com.android.systemui.dreams.DreamOverlayStateController;
 import com.android.systemui.plugins.ActivityStarter;
@@ -56,17 +58,20 @@
  * devices at home like lights and thermostats).
  */
 public class DreamHomeControlsComplication implements Complication {
+    private final Resources mResources;
     private final DreamHomeControlsComplicationComponent.Factory mComponentFactory;
 
     @Inject
     public DreamHomeControlsComplication(
+            @Main Resources resources,
             DreamHomeControlsComplicationComponent.Factory componentFactory) {
+        mResources = resources;
         mComponentFactory = componentFactory;
     }
 
     @Override
     public ViewHolder createView(ComplicationViewModel model) {
-        return mComponentFactory.create().getViewHolder();
+        return mComponentFactory.create(mResources).getViewHolder();
     }
 
     @Override
diff --git a/packages/SystemUI/src/com/android/systemui/complication/dagger/DreamHomeControlsComplicationComponent.java b/packages/SystemUI/src/com/android/systemui/complication/dagger/DreamHomeControlsComplicationComponent.java
index ef18d66..2b5aa7c 100644
--- a/packages/SystemUI/src/com/android/systemui/complication/dagger/DreamHomeControlsComplicationComponent.java
+++ b/packages/SystemUI/src/com/android/systemui/complication/dagger/DreamHomeControlsComplicationComponent.java
@@ -18,12 +18,19 @@
 
 import static java.lang.annotation.RetentionPolicy.RUNTIME;
 
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.drawable.Drawable;
 import android.view.LayoutInflater;
 import android.widget.ImageView;
 
+import com.android.settingslib.Utils;
 import com.android.systemui.R;
 import com.android.systemui.complication.DreamHomeControlsComplication;
+import com.android.systemui.shared.shadow.DoubleShadowIconDrawable;
+import com.android.systemui.shared.shadow.DoubleShadowTextHelper;
 
+import dagger.BindsInstance;
 import dagger.Module;
 import dagger.Provides;
 import dagger.Subcomponent;
@@ -59,7 +66,7 @@
      */
     @Subcomponent.Factory
     interface Factory {
-        DreamHomeControlsComplicationComponent create();
+        DreamHomeControlsComplicationComponent create(@BindsInstance Resources resources);
     }
 
     /**
@@ -68,6 +75,7 @@
     @Module
     interface DreamHomeControlsModule {
         String DREAM_HOME_CONTROLS_CHIP_VIEW = "dream_home_controls_chip_view";
+        String DREAM_HOME_CONTROLS_BACKGROUND_DRAWABLE = "dream_home_controls_background_drawable";
 
         /**
          * Provides the dream home controls chip view.
@@ -75,9 +83,56 @@
         @Provides
         @DreamHomeControlsComplicationScope
         @Named(DREAM_HOME_CONTROLS_CHIP_VIEW)
-        static ImageView provideHomeControlsChipView(LayoutInflater layoutInflater) {
-            return (ImageView) layoutInflater.inflate(R.layout.dream_overlay_home_controls_chip,
-                    null, false);
+        static ImageView provideHomeControlsChipView(
+                LayoutInflater layoutInflater,
+                @Named(DREAM_HOME_CONTROLS_BACKGROUND_DRAWABLE) Drawable backgroundDrawable) {
+            final ImageView chip =
+                    (ImageView) layoutInflater.inflate(R.layout.dream_overlay_home_controls_chip,
+                            null, false);
+            chip.setBackground(backgroundDrawable);
+
+            return chip;
+        }
+
+        @Provides
+        @DreamHomeControlsComplicationScope
+        @Named(DREAM_HOME_CONTROLS_BACKGROUND_DRAWABLE)
+        static Drawable providesHomeControlsBackground(Context context, Resources resources) {
+            final Drawable background = new DoubleShadowIconDrawable(createShadowInfo(
+                            resources,
+                            R.dimen.dream_overlay_bottom_affordance_key_text_shadow_radius,
+                            R.dimen.dream_overlay_bottom_affordance_key_text_shadow_dx,
+                            R.dimen.dream_overlay_bottom_affordance_key_text_shadow_dy,
+                            R.dimen.dream_overlay_bottom_affordance_key_shadow_alpha
+                    ),
+                    createShadowInfo(
+                            resources,
+                            R.dimen.dream_overlay_bottom_affordance_ambient_text_shadow_radius,
+                            R.dimen.dream_overlay_bottom_affordance_ambient_text_shadow_dx,
+                            R.dimen.dream_overlay_bottom_affordance_ambient_text_shadow_dy,
+                            R.dimen.dream_overlay_bottom_affordance_ambient_shadow_alpha
+                    ),
+                    resources.getDrawable(R.drawable.dream_overlay_bottom_affordance_bg),
+                    resources.getDimensionPixelOffset(
+                            R.dimen.dream_overlay_bottom_affordance_width),
+                    resources.getDimensionPixelSize(R.dimen.dream_overlay_bottom_affordance_inset)
+            );
+
+            background.setTintList(
+                    Utils.getColorAttr(context, com.android.internal.R.attr.colorSurface));
+
+            return background;
+        }
+
+        private static DoubleShadowTextHelper.ShadowInfo createShadowInfo(Resources resources,
+                int blurId, int offsetXId, int offsetYId, int alphaId) {
+
+            return new DoubleShadowTextHelper.ShadowInfo(
+                    resources.getDimension(blurId),
+                    resources.getDimension(offsetXId),
+                    resources.getDimension(offsetYId),
+                    resources.getFloat(alphaId)
+            );
         }
     }
 }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/complication/DreamHomeControlsComplicationTest.java b/packages/SystemUI/tests/src/com/android/systemui/complication/DreamHomeControlsComplicationTest.java
index 3cbb249..63b0b25 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/complication/DreamHomeControlsComplicationTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/complication/DreamHomeControlsComplicationTest.java
@@ -29,6 +29,7 @@
 
 import android.content.ComponentName;
 import android.content.Context;
+import android.content.res.Resources;
 import android.testing.AndroidTestingRunner;
 import android.view.View;
 
@@ -73,6 +74,9 @@
     private Context mContext;
 
     @Mock
+    private Resources mResources;
+
+    @Mock
     private ControlsComponent mControlsComponent;
 
     @Mock
@@ -118,7 +122,7 @@
     @Test
     public void complicationType() {
         final DreamHomeControlsComplication complication =
-                new DreamHomeControlsComplication(mComponentFactory);
+                new DreamHomeControlsComplication(mResources, mComponentFactory);
         assertThat(complication.getRequiredTypeAvailability()).isEqualTo(
                 COMPLICATION_TYPE_HOME_CONTROLS);
     }