commit f3a57d42104c5df77624d38813747b1279525d50
author Rodrigo Obregon <robregon@ti.com> Thu Nov 18 13:49:27 2010 -0600
committer Rodrigo Obregon <robregon@ti.com> Thu Nov 18 19:09:04 2010 -0600
tree a2c5e1d87fdcd12843db369a5ebda297bb6fb0a2
parent d366b3eafb111d2cc7ef97f9bd2ed330ce90ed06

Gallery3D: Add depth component to icon animation

When the Gallery application positions the thumbnails
in a GridView, they are placed in the same z-plane.
When a configuration change occurs the icons present
a z-fighting visual artifact.

This patch adds a z component to the thumbnails when they are
animated as to mitigate this effect. This is specially
noticeable in a GPU architecture using deferred rendering.

Change-Id: If78232058b71d482cde0dbb55a038ded9fdbdf76
Signed-off-by: Rodrigo Obregon <robregon@ti.com>

src/com/cooliris/media/GridLayer.java

diff --git a/src/com/cooliris/media/GridLayer.java b/src/com/cooliris/media/GridLayer.java
index 74aff5d..1bf7ebc 100644
--- a/src/com/cooliris/media/GridLayer.java
+++ b/src/com/cooliris/media/GridLayer.java
@@ -82,6 +82,7 @@
 
     private final LayoutInterface mLayoutInterface;
     private static final LayoutInterface sfullScreenLayoutInterface = new GridLayoutInterface(1);
+    private static final float DEPTH_POSITION = 0.5f;
 
     private MediaFeed mMediaFeed;
     private boolean mInAlbum = false;
@@ -678,6 +679,14 @@
                                         displayItem.set(position, j, false);
                                         displayItem.commit();
                                     } else {
+                                        boolean isTouchPressed = mInputProcessor.touchPressed();
+                                        boolean isBarDragged = mHud.getTimeBar().isDragged();
+                                        if (mState == STATE_GRID_VIEW
+                                                && !isTouchPressed
+                                                && !isBarDragged) {
+                                            displayItem.mAnimatedPosition.add(
+                                                0.0f, 0.0f, i * DEPTH_POSITION);
+                                        }
                                         displayList.setPositionAndStackIndex(displayItem, position, j, true);
                                     }
                                     displayItems[baseIndex + j] = displayItem;