Asset updates

- Change how default widget previews look (5509429)
- Improve antialiasing in portal assets

Change-Id: I9993aec46a9a9ab8a732b4fc150120c935523f02

src/com/android/launcher2/PendingAddItemInfo.java

@@ -33,6 +33,7 @@ class PendingAddItemInfo extends ItemInfo {
 class PendingAddWidgetInfo extends PendingAddItemInfo {
     int minWidth;
     int minHeight;
+    boolean hasDefaultPreview;
 
     // Any configuration data that we want to pass to a configuration activity when
     // starting up a widget
@@ -44,6 +45,7 @@ class PendingAddWidgetInfo extends PendingAddItemInfo {
         componentName = i.provider;
         minWidth = i.minWidth;
         minHeight = i.minHeight;
+        hasDefaultPreview = i.previewImage <= 0;
         if (dataMimeType != null && data != null) {
             mimeType = dataMimeType;
             configurationData = data;