Make Launcher more forgiving when dragging desktop items.

This change adds nearby-area searching when dragging desktop items into already-occupied cells.  This approach tries harder to find a matching area, instead of strictly rejecting invalid moves.

We also draw a "snag" during the drag to show where an item would be dropped, but only if we would drop into an alternative cell.  This gives users better feedback about where things will drop.

http://b/issue?id=1634887

1 files changed, 5 insertions, 0 deletions

diff --git a/src/com/android/launcher/DeleteZone.java b/src/com/android/launcher/DeleteZone.java
index 7f92c2334..02e8011d0 100644
--- a/src/com/android/launcher/DeleteZone.java
+++ b/src/com/android/launcher/DeleteZone.java
@@ -19,6 +19,7 @@ package com.android.launcher;
 import android.widget.ImageView;
 import android.content.Context;
 import android.content.res.TypedArray;
+import android.graphics.Rect;
 import android.util.AttributeSet;
 import android.view.View;
 import android.view.animation.TranslateAnimation;
@@ -77,6 +78,10 @@ public class DeleteZone extends ImageView implements DropTarget, DragController.
             Object dragInfo) {
         return true;
     }
+    
+    public Rect estimateDropLocation(DragSource source, int x, int y, int xOffset, int yOffset, Object dragInfo, Rect recycle) {
+        return null;
+    }
 
     public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, Object dragInfo) {
         final ItemInfo item = (ItemInfo) dragInfo;