Merge "Fix animation slowdown when splitting from All Apps" into tm-qpr-dev

quickstep/src/com/android/launcher3/uioverrides/states/QuickstepAtomicAnimationFactory.java

@@ -197,7 +197,8 @@ public class QuickstepAtomicAnimationFactory extends
             config.setInterpolator(ANIM_OVERVIEW_ACTIONS_FADE, clampToProgress(LINEAR,
                     timings.getActionsFadeStartOffset(),
                     timings.getActionsFadeEndOffset()));
-        } else if (fromState == NORMAL && toState == OVERVIEW_SPLIT_SELECT) {
+        } else if ((fromState == NORMAL || fromState == ALL_APPS)
+                && toState == OVERVIEW_SPLIT_SELECT) {
             // Splitting from Home is currently only available on tablets
             SplitAnimationTimings timings = SplitAnimationTimings.TABLET_HOME_TO_SPLIT;
             config.setInterpolator(ANIM_SCRIM_FADE, clampToProgress(LINEAR,

quickstep/src/com/android/quickstep/views/RecentsView.java

@@ -4157,6 +4157,9 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         }
     }
 
+    /**
+     * Called when staging a split from Home/AllApps, using the icon long-press menu.
+     */
     public void initiateSplitSelect(QuickstepSystemShortcut.SplitSelectSource splitSelectSource) {
         mSplitSelectSource = splitSelectSource;
         mSplitSelectStateController.setInitialTaskSelect(splitSelectSource.intent,