Added taskbar in/out animation when the bubble bar is expanded/collapsed

Added taskbar icon animation when the bubble bar expansion changes.

If there is enough space to accommodate both bars with spacing in
between, the taskbar remains. If there is not enough space, the taskbar
is animated out and then animated in when the bubble bar is collapsed.

Bug: 346391377
Flag: com.android.wm.shell.enable_bubble_bar
Test: Manual. Set taskbar to persistent mode via 3-button navigation or
through the taskbar itself. Have enough bubbles to cover the taskbar
when the bubble bar is extended. Expand the bubble bar and observe the
taskbar icons animating out. Remove a few bubbles so there is enough
space to accommodate both bars. Expand the bubble bar and observe that
both bars are visible.

Change-Id: I0b03a010c1e49ab39a17934f6629d5496fd66978

quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java

@@ -96,7 +96,9 @@ public class TaskbarViewController implements TaskbarControllers.LoggableTaskbar
     public static final int ALPHA_INDEX_NOTIFICATION_EXPANDED = 4;
     public static final int ALPHA_INDEX_ASSISTANT_INVOKED = 5;
     public static final int ALPHA_INDEX_SMALL_SCREEN = 6;
-    private static final int NUM_ALPHA_CHANNELS = 7;
+
+    public static final int ALPHA_INDEX_BUBBLE_BAR = 7;
+    private static final int NUM_ALPHA_CHANNELS = 8;
 
     private static boolean sEnableModelLoadingForTests = true;
 
@@ -272,6 +274,10 @@ public class TaskbarViewController implements TaskbarControllers.LoggableTaskbar
         OneShotPreDrawListener.add(mTaskbarView, listener);
     }
 
+    public Rect getIconLayoutVisualBounds() {
+        return mTaskbarView.getIconLayoutVisualBounds();
+    }
+
     public Rect getIconLayoutBounds() {
         return mTaskbarView.getIconLayoutBounds();
     }
@@ -462,14 +468,14 @@ public class TaskbarViewController implements TaskbarControllers.LoggableTaskbar
         if (mControllers.getSharedState().startTaskbarVariantIsTransient) {
             float transY =
                     mTransientTaskbarDp.taskbarBottomMargin + (mTransientTaskbarDp.taskbarHeight
-                            - mTaskbarView.getIconLayoutBounds().bottom)
+                            - mTaskbarView.getIconLayoutVisualBounds().bottom)
                             - (mPersistentTaskbarDp.taskbarHeight
                                     - mTransientTaskbarDp.taskbarIconSize) / 2f;
             taskbarIconTranslationYForPinningValue = mapRange(scale, 0f, transY);
         } else {
             float transY =
                     -mTransientTaskbarDp.taskbarBottomMargin + (mPersistentTaskbarDp.taskbarHeight
-                            - mTaskbarView.getIconLayoutBounds().bottom)
+                            - mTaskbarView.getIconLayoutVisualBounds().bottom)
                             - (mTransientTaskbarDp.taskbarHeight
                                     - mTransientTaskbarDp.taskbarIconSize) / 2f;
             taskbarIconTranslationYForPinningValue = mapRange(scale, transY, 0f);