1 files changed, 33 insertions, 2 deletions
diff --git a/src/com/android/gallery3d/ui/PhotoView.java b/src/com/android/gallery3d/ui/PhotoView.java
index 7f3bee0a3..1610a1274 100644
--- a/src/com/android/gallery3d/ui/PhotoView.java
+++ b/src/com/android/gallery3d/ui/PhotoView.java
@@ -28,11 +28,10 @@ import android.view.animation.AccelerateInterpolator;
 import com.android.gallery3d.R;
 import com.android.gallery3d.app.GalleryActivity;
 import com.android.gallery3d.common.Utils;
+import com.android.gallery3d.data.MediaItem;
 import com.android.gallery3d.data.MediaObject;
 import com.android.gallery3d.util.RangeArray;
 
-import java.util.Arrays;
-
 public class PhotoView extends GLView {
     @SuppressWarnings("unused")
     private static final String TAG = "PhotoView";
@@ -55,6 +54,9 @@ public class PhotoView extends GLView {
         // not avaiable, width = height = 0.
         public void getImageSize(int offset, Size size);
 
+        // Returns the media item for the specified picture.
+        public MediaItem getMediaItem(int offset);
+
         // Returns the rotation for the specified picture.
         public int getImageRotation(int offset);
 
@@ -1337,4 +1339,33 @@ public class PhotoView extends GLView {
     public void setListener(Listener listener) {
         mListener = listener;
     }
+
+    public Rect getPhotoRect(int index) {
+        return mPositionController.getPosition(index);
+    }
+
+
+    public PhotoFallbackEffect buildFallbackEffect(GLView root, GLCanvas canvas) {
+        Rect location = new Rect();
+        Utils.assertTrue(root.getBoundsOf(this, location));
+
+        Rect fullRect = bounds();
+        PhotoFallbackEffect effect = new PhotoFallbackEffect();
+        for (int i = -SCREEN_NAIL_MAX; i <= SCREEN_NAIL_MAX; ++i) {
+            MediaItem item = mModel.getMediaItem(i);
+            if (item == null) continue;
+            ScreenNail sc = mModel.getScreenNail(i);
+            if (sc == null) continue;
+            Rect rect = new Rect(getPhotoRect(i));
+            if (!Rect.intersects(fullRect, rect)) continue;
+            rect.offset(location.left, location.top);
+
+            RawTexture texture = new RawTexture(sc.getWidth(), sc.getHeight(), true);
+            canvas.beginRenderTarget(texture);
+            sc.draw(canvas, 0, 0, sc.getWidth(), sc.getHeight());
+            canvas.endRenderTarget();
+            effect.addEntry(item.getPath(), rect, texture);
+        }
+        return effect;
+    }
 }