commit 3e94d52732cdc1a10c117cf1bed9a8d6242db5c7
author Liran Binyamin <liranb@google.com> Fri May 19 12:36:54 2023 -0400
committer Liran Binyamin <liranb@google.com> Thu Jun 15 18:07:54 2023 +0000
tree 31ff670619f401a2f4dd4c4a3f8b2e0cb89a1720
parent 35b1f38403ba455c9980970fc2d91c269e8e72ea

Fade the bubble bar arrow in and out when the bubble bar expands and collapses.

Demo: http://recall/-/bJtug1HhvXkkeA4MQvIaiP/hKhpM98JZe1gT8bwtYkNeW

Bug: 280604480
Test: Tested on a physical device
Change-Id: Iaee9aeb0a8c1e2bd61816964e4cae5f7bea926ff

quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarBackground.kt

diff --git a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarBackground.kt b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarBackground.kt
index cd95ad3..1e3f4f1 100644
--- a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarBackground.kt
+++ b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarBackground.kt
@@ -61,8 +61,11 @@
         pointerSize = res.getDimension(R.dimen.bubblebar_pointer_size)
 
         shadowAlpha =
-            if (Utilities.isDarkTheme(context)) DARK_THEME_SHADOW_ALPHA
-            else LIGHT_THEME_SHADOW_ALPHA
+            if (Utilities.isDarkTheme(context)) {
+                DARK_THEME_SHADOW_ALPHA
+            } else {
+                LIGHT_THEME_SHADOW_ALPHA
+            }
 
         arrowDrawable =
             ShapeDrawable(TriangleShape.create(pointerSize, pointerSize, /* pointUp= */ true))
@@ -134,4 +137,8 @@
     override fun setColorFilter(colorFilter: ColorFilter?) {
         paint.colorFilter = colorFilter
     }
+
+    fun setArrowAlpha(alpha: Int) {
+        arrowDrawable.paint.alpha = alpha
+    }
 }

quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarView.java

diff --git a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarView.java b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarView.java
index 8b3e2e4..ac5bfc6 100644
--- a/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarView.java
+++ b/quickstep/src/com/android/launcher3/taskbar/bubbles/BubbleBarView.java
@@ -262,6 +262,7 @@
             mBubbleBarBackground.setArrowPosition(arrowPosition);
         }
 
+        mBubbleBarBackground.setArrowAlpha((int) (255 * widthState));
         mBubbleBarBackground.setWidth(interpolatedWidth);
     }