commit 2763be3150d429d338b9848286e9365b4052c100
author Michael Jurka <mikejurka@google.com> Thu Feb 24 11:19:57 2011 -0800
committer Michael Jurka <mikejurka@google.com> Wed Mar 02 14:48:28 2011 -0800
tree 2f3878467b76a80790eed214e422e086f29e5fae
parent d72b048e207b8577b36f8c9a685a70046c3c5f58

Improving performance of All Apps transition

- increased perf ~8fps using hardware layers

Change-Id: Ic6a2c23e9182fdb1ee362cbd72f7813f4e9accf0

src/com/android/launcher2/Launcher.java

diff --git a/src/com/android/launcher2/Launcher.java b/src/com/android/launcher2/Launcher.java
index 039e76b..63982ba 100644
--- a/src/com/android/launcher2/Launcher.java
+++ b/src/com/android/launcher2/Launcher.java
@@ -2767,7 +2767,7 @@
             });
 
             if (toAllApps) {
-                toView.setAlpha(0f);
+                toView.setFastAlpha(0f);
                 ValueAnimator alphaAnim = ValueAnimator.ofFloat(0f, 1f).setDuration(duration);
                 alphaAnim.setInterpolator(new DecelerateInterpolator(1.5f));
                 alphaAnim.addUpdateListener(new AnimatorUpdateListener() {
@@ -2781,9 +2781,8 @@
                 alphaAnim.start();
             }
 
-            // Only use hardware layers in portrait mode, they don't give any gains in landscape
-            if (mWorkspace.getWidth() < mWorkspace.getHeight()) {
-                toView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
+            if (toView instanceof LauncherAnimatable) {
+                ((LauncherAnimatable) toView).onLauncherAnimationStart();
             }
             scaleAnim.addListener(new AnimatorListenerAdapter() {
                 @Override
@@ -2793,7 +2792,7 @@
                     toView.setTranslationY(0.0f);
                     toView.setVisibility(View.VISIBLE);
                     if (!toAllApps) {
-                        toView.setAlpha(1.0f);
+                        toView.setFastAlpha(1.0f);
                     }
                 }
                 @Override
@@ -2801,9 +2800,11 @@
                     // If we don't set the final scale values here, if this animation is cancelled
                     // it will have the wrong scale value and subsequent cameraPan animations will
                     // not fix that
-                    toView.setLayerType(View.LAYER_TYPE_NONE, null);
                     toView.setScaleX(1.0f);
                     toView.setScaleY(1.0f);
+                    if (toView instanceof LauncherAnimatable) {
+                        ((LauncherAnimatable) toView).onLauncherAnimationEnd();
+                    }
                 }
             });
 
@@ -2895,13 +2896,16 @@
                     fromView.setFastAlpha(a * 1f + b * 0f);
                 }
             });
-
-            fromView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
+            if (fromView instanceof LauncherAnimatable) {
+                ((LauncherAnimatable) fromView).onLauncherAnimationStart();
+            }
             alphaAnim.addListener(new AnimatorListenerAdapter() {
                 @Override
                 public void onAnimationEnd(Animator animation) {
                     fromView.setVisibility(View.GONE);
-                    fromView.setLayerType(View.LAYER_TYPE_NONE, null);
+                    if (fromView instanceof LauncherAnimatable) {
+                        ((LauncherAnimatable) fromView).onLauncherAnimationEnd();
+                    }
                 }
             });
 
@@ -3714,3 +3718,8 @@
         Log.d(TAG, "END launcher2 dump state");
     }
 }
+
+interface LauncherAnimatable {
+    void onLauncherAnimationStart();
+    void onLauncherAnimationEnd();
+}