From 9af01bb3368945164b1b6936bfcb4f1ff45717b5 Mon Sep 17 00:00:00 2001
From: wilsonshih <wilsonshih@google.com>
Date: Mon, 22 Nov 2021 16:59:08 +0800
Subject: [PATCH] Fade out branding image with icon while exit splash screen.

Fade out the branding image with icon if exists.

Test: atest SplashscreenTests
Test: manual launch test app to see branding image is fadeout.
Bug: 207298633
Change-Id: I629ee8548198fe33671586048a999049b958b0e2
---
 core/res/res/layout/splash_screen_view.xml    |  1 +
 .../SplashScreenExitAnimation.java            | 25 ++++++++++++++++---
 2 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/core/res/res/layout/splash_screen_view.xml b/core/res/res/layout/splash_screen_view.xml
index 2b9f95227f082..304affe068a49 100644
--- a/core/res/res/layout/splash_screen_view.xml
+++ b/core/res/res/layout/splash_screen_view.xml
@@ -36,6 +36,7 @@
           android:layout_marginBottom="60dp"
           android:padding="0dp"
           android:background="@null"
+          android:forceHasOverlappingRendering="false"
           android:contentDescription="@string/splash_screen_view_branding_description"/>
 
 </android.window.SplashScreenView>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/startingsurface/SplashScreenExitAnimation.java b/libs/WindowManager/Shell/src/com/android/wm/shell/startingsurface/SplashScreenExitAnimation.java
index 003d8a3f2fefc..e7b5744dd21b9 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/startingsurface/SplashScreenExitAnimation.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/startingsurface/SplashScreenExitAnimation.java
@@ -72,6 +72,7 @@ public class SplashScreenExitAnimation implements Animator.AnimatorListener {
     private final int mAppRevealDuration;
     private final int mAnimationDuration;
     private final float mIconStartAlpha;
+    private final float mBrandingStartAlpha;
     private final TransactionPool mTransactionPool;
 
     private ValueAnimator mMainAnimator;
@@ -94,9 +95,17 @@ public class SplashScreenExitAnimation implements Animator.AnimatorListener {
                 || iconView.getLayoutParams().height == 0) {
             mIconFadeOutDuration = 0;
             mIconStartAlpha = 0;
+            mBrandingStartAlpha = 0;
             mAppRevealDelay = 0;
         } else {
             iconView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
+            // The branding view could only exists when the icon is present.
+            final View brandingView = view.getBrandingView();
+            if (brandingView != null) {
+                mBrandingStartAlpha = brandingView.getAlpha();
+            } else {
+                mBrandingStartAlpha = 0;
+            }
             mIconFadeOutDuration = context.getResources().getInteger(
                     R.integer.starting_window_app_reveal_icon_fade_out_duration);
             mAppRevealDelay = context.getResources().getInteger(
@@ -334,13 +343,21 @@ public class SplashScreenExitAnimation implements Animator.AnimatorListener {
         // ignore
     }
 
-    private void onAnimationProgress(float linearProgress) {
-        View iconView = mSplashScreenView.getIconView();
+    private void onFadeOutProgress(float linearProgress) {
+        final float iconProgress = ICON_INTERPOLATOR.getInterpolation(
+                getProgress(linearProgress, 0 /* delay */, mIconFadeOutDuration));
+        final View iconView = mSplashScreenView.getIconView();
+        final View brandingView = mSplashScreenView.getBrandingView();
         if (iconView != null) {
-            final float iconProgress = ICON_INTERPOLATOR.getInterpolation(
-                    getProgress(linearProgress, 0 /* delay */, mIconFadeOutDuration));
             iconView.setAlpha(mIconStartAlpha * (1 - iconProgress));
         }
+        if (brandingView != null) {
+            brandingView.setAlpha(mBrandingStartAlpha * (1 - iconProgress));
+        }
+    }
+
+    private void onAnimationProgress(float linearProgress) {
+        onFadeOutProgress(linearProgress);
 
         final float revealLinearProgress = getProgress(linearProgress, mAppRevealDelay,
                 mAppRevealDuration);