From 7d20de28e395941b2d4adc020783b45a284269be Mon Sep 17 00:00:00 2001
From: Jerry Chang <chenghsiuchang@google.com>
Date: Thu, 9 Dec 2021 01:18:59 +0800
Subject: [PATCH] Always draw background for task thumbnail

Always draw background for task thumbnail because the task snapshot
might be translucent or partially empty.

For example, when drag-to-dismiss split screen, it will reparent tasks
from dismissing split root to the bottom of display. Task thumbnail of
those tasks might be partially empty because the snapshot was taken in
new bounds inherits from display but with split screen content.

Fix: 200096421
Test: drag to dismiss split, observed task thumbnail no longger been
      cropped.
Change-Id: I5d04daa55a558f79ccf5127080088bd0698d06d8
---
 .../android/quickstep/views/TaskThumbnailView.java  | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java b/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
index da92551526..d83387705a 100644
--- a/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
@@ -307,14 +307,15 @@ public class TaskThumbnailView extends View {
             }
         }
 
-        // Draw the background in all cases, except when the thumbnail data is opaque
+        // Always draw the background since the snapshots might be translucent or partially empty
+        // (For example, tasks been reparented out of dismissing split root when drag-to-dismiss
+        // split screen).
+        canvas.drawRoundRect(x, y, width, height, cornerRadius, cornerRadius, mBackgroundPaint);
+
         final boolean drawBackgroundOnly = mTask == null || mTask.isLocked || mBitmapShader == null
                 || mThumbnailData == null;
-        if (drawBackgroundOnly || mThumbnailData.isTranslucent) {
-            canvas.drawRoundRect(x, y, width, height, cornerRadius, cornerRadius, mBackgroundPaint);
-            if (drawBackgroundOnly) {
-                return;
-            }
+        if (drawBackgroundOnly) {
+            return;
         }
 
         canvas.drawRoundRect(x, y, width, height, cornerRadius, cornerRadius, mPaint);