commit 258e4526b74daede125d18994d601675f98e776c
author Lucas Dupin <dupin@google.com> Fri Jun 04 09:25:37 2021 -0700
committer Lucas Dupin <dupin@google.com> Fri Jun 04 11:05:37 2021 -0700
tree 2609db6ef15ea35a0a97b003e8bd06a78dc12b6d
parent 3ed65ede1679021c320576c50cfe49b6651303bc

Remove blur from launcher when in overview

The App window will be under Launcher, so we can't actually blur
launcher at that time, otherwise the live window will also be blurred.

Test: manual
Bug: 189207458
Change-Id: Ie07449d29d3b0dc60d3787b6d32aa9e46e0bb613

quickstep/src/com/android/launcher3/statehandlers/DepthController.java

diff --git a/quickstep/src/com/android/launcher3/statehandlers/DepthController.java b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
index 46ef698..5b4e5f2 100644
--- a/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
+++ b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
@@ -161,7 +161,7 @@
         if (mSurface != surface) {
             mSurface = surface;
             if (surface != null) {
-                setDepth(mDepth);
+                dispatchTransactionSurface(mDepth);
             }
         }
     }
@@ -175,6 +175,8 @@
         float toDepth = toState.getDepth(mLauncher);
         if (Float.compare(mDepth, toDepth) != 0) {
             setDepth(toDepth);
+        } else if (toState == LauncherState.OVERVIEW) {
+            dispatchTransactionSurface(mDepth);
         }
     }
 
@@ -200,26 +202,35 @@
         if (Float.compare(mDepth, depthF) == 0) {
             return;
         }
+        if (dispatchTransactionSurface(depthF)) {
+            mDepth = depthF;
+        }
+    }
 
+    private boolean dispatchTransactionSurface(float depth) {
         boolean supportsBlur = BlurUtils.supportsBlursOnWindows();
         if (supportsBlur && (mSurface == null || !mSurface.isValid())) {
-            return;
+            return false;
         }
-        mDepth = depthF;
         ensureDependencies();
         IBinder windowToken = mLauncher.getRootView().getWindowToken();
         if (windowToken != null) {
-            mWallpaperManager.setWallpaperZoomOut(windowToken, mDepth);
+            mWallpaperManager.setWallpaperZoomOut(windowToken, depth);
         }
 
         if (supportsBlur) {
-            boolean isOpaque = mLauncher.getScrimView().isFullyOpaque();
-            int blur = isOpaque ? 0 : (int) (mDepth * mMaxBlurRadius);
+            // We cannot mark the window as opaque in overview because there will be an app window
+            // below the launcher layer, and we need to draw it -- without blurs.
+            boolean isOverview = mLauncher.isInState(LauncherState.OVERVIEW);
+            boolean opaque = mLauncher.getScrimView().isFullyOpaque() && !isOverview;
+
+            int blur = opaque || isOverview ? 0 : (int) (depth * mMaxBlurRadius);
             new SurfaceControl.Transaction()
                     .setBackgroundBlurRadius(mSurface, blur)
-                    .setOpaque(mSurface, isOpaque)
+                    .setOpaque(mSurface, opaque)
                     .apply();
         }
+        return true;
     }
 
     @Override