From 57abc612d342b93126d0b3a66857dcbea88cbcd8 Mon Sep 17 00:00:00 2001
From: Mill Chen <millchen@google.com>
Date: Sat, 25 Apr 2020 01:53:54 +0800
Subject: [PATCH] Add an API to get active icon for screen saver

In order to improve the clarity of current screen saver, we need to get
the active icon from DreamBackend and add it on the left side of current
screen saver preference.

Bug: 129994275
Test: robotests
Change-Id: I844ccdcdccc270f23f1a0f0f0ce5335fce184c5b
---
 .../settingslib/dream/DreamBackend.java       | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/packages/SettingsLib/src/com/android/settingslib/dream/DreamBackend.java b/packages/SettingsLib/src/com/android/settingslib/dream/DreamBackend.java
index 57e680849fec3..ab7b54d982858 100644
--- a/packages/SettingsLib/src/com/android/settingslib/dream/DreamBackend.java
+++ b/packages/SettingsLib/src/com/android/settingslib/dream/DreamBackend.java
@@ -159,6 +159,25 @@ public class DreamBackend {
         return null;
     }
 
+    /**
+     * Gets an icon from active dream.
+     */
+    public Drawable getActiveIcon() {
+        final ComponentName cn = getActiveDream();
+        if (cn != null) {
+            final PackageManager pm = mContext.getPackageManager();
+            try {
+                final ServiceInfo ri = pm.getServiceInfo(cn, 0);
+                if (ri != null) {
+                    return ri.loadIcon(pm);
+                }
+            } catch (PackageManager.NameNotFoundException exc) {
+                return null;
+            }
+        }
+        return null;
+    }
+
     public @WhenToDream int getWhenToDreamSetting() {
         if (!isEnabled()) {
             return NEVER;