From 971d8e6399d556302b52a92dd29abf44830a587c Mon Sep 17 00:00:00 2001
From: Jorim Jaggi <jjaggi@google.com>
Date: Mon, 11 Apr 2016 18:37:20 -0700
Subject: [PATCH] Don't remove background when resizing

This leads to flickers, as we should not draw in a translucent way
if we didn't specify that our window is translucent, because the
renderer has some about translucency.

Instead, we should clip the backdrop content by the inverse of the
content clip rect, which is not yet implemented.

Bug: 28009524
Change-Id: Ia3f54fb83997ace863e78ff1cbe45cfb64f92f26
---
 .../java/com/android/internal/policy/DecorView.java | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/core/java/com/android/internal/policy/DecorView.java b/core/java/com/android/internal/policy/DecorView.java
index f9ac5632b49b9..3aa771971cf29 100644
--- a/core/java/com/android/internal/policy/DecorView.java
+++ b/core/java/com/android/internal/policy/DecorView.java
@@ -210,7 +210,6 @@ public class DecorView extends FrameLayout implements RootViewSurfaceTaker, Wind
     private Drawable mResizingBackgroundDrawable;
     private Drawable mCaptionBackgroundDrawable;
     private Drawable mUserCaptionBackgroundDrawable;
-    private Drawable mOriginalBackgroundDrawable;
 
     private float mAvailableWidth;
 
@@ -891,11 +890,6 @@ public class DecorView extends FrameLayout implements RootViewSurfaceTaker, Wind
                 mBackgroundPadding.setEmpty();
             }
             drawableChanged();
-
-            // Make sure we don't reset to the old drawable when finishing resizing.
-            if (mResizeMode != RESIZE_MODE_INVALID) {
-                mOriginalBackgroundDrawable = null;
-            }
         }
     }
 
@@ -1960,9 +1954,6 @@ public class DecorView extends FrameLayout implements RootViewSurfaceTaker, Wind
             updateElevation();
 
             updateColorViews(null /* insets */, false);
-
-            mOriginalBackgroundDrawable = getBackground();
-            setBackgroundDrawable(null);
         }
         mResizeMode = resizeMode;
         getViewRootImpl().requestInvalidateRootRenderNode();
@@ -1974,10 +1965,6 @@ public class DecorView extends FrameLayout implements RootViewSurfaceTaker, Wind
         updateColorViews(null /* insets */, false);
         mResizeMode = RESIZE_MODE_INVALID;
         getViewRootImpl().requestInvalidateRootRenderNode();
-        if (mOriginalBackgroundDrawable != null) {
-            setBackgroundDrawable(mOriginalBackgroundDrawable);
-            mOriginalBackgroundDrawable = null;
-        }
     }
 
     @Override