From ca009e4e93e6dae7727fdef2d15c87e5a717e777 Mon Sep 17 00:00:00 2001
From: Ats Jenk <atsjenk@google.com>
Date: Fri, 6 Jan 2023 09:52:40 -0800
Subject: [PATCH] Skip depth and scrim if freeform tasks are visible

If freeform tasks are shown, skip applying depth effect and scrim
changes. These cause the background to flicker while showing freeform
tasks and for example showing the transient taskbar.

Bug: 263264985
Test: swipe up to show transient taskbar, observe launcher background
does not blur or flicker to black

Change-Id: I5b10d0f0c7065e903cb761488367c02d7e31d8b2
---
 .../android/launcher3/uioverrides/QuickstepLauncher.java | 8 ++++++++
 .../launcher3/uioverrides/states/BackgroundAppState.java | 7 +++++++
 .../launcher3/uioverrides/states/QuickSwitchState.java   | 9 +++++++++
 src/com/android/launcher3/Launcher.java                  | 8 ++++++++
 4 files changed, 32 insertions(+)

diff --git a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
index 28c8980668..72f321b5a8 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java
@@ -1002,6 +1002,14 @@ public class QuickstepLauncher extends Launcher {
         mPendingSplitSelectInfo = null;
     }
 
+    @Override
+    public boolean areFreeformTasksVisible() {
+        if (mDesktopVisibilityController != null) {
+            return mDesktopVisibilityController.areFreeformTasksVisible();
+        }
+        return false;
+    }
+
     private static final class LauncherTaskViewController extends
             TaskViewTouchController<Launcher> {
 
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java b/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java
index 733c6a8b48..95eb128e00 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java
@@ -28,6 +28,7 @@ import com.android.launcher3.R;
 import com.android.launcher3.allapps.AllAppsTransitionController;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.quickstep.util.LayoutUtils;
+import com.android.quickstep.views.DesktopTaskView;
 import com.android.quickstep.views.RecentsView;
 
 /**
@@ -91,6 +92,12 @@ public class BackgroundAppState extends OverviewState {
 
     @Override
     protected float getDepthUnchecked(Context context) {
+        if (DesktopTaskView.DESKTOP_MODE_SUPPORTED) {
+            if (Launcher.getLauncher(context).areFreeformTasksVisible()) {
+                // Don't blur the background while freeform tasks are visible
+                return 0;
+            }
+        }
         return 1;
     }
 
diff --git a/quickstep/src/com/android/launcher3/uioverrides/states/QuickSwitchState.java b/quickstep/src/com/android/launcher3/uioverrides/states/QuickSwitchState.java
index 969abc2804..739246992c 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/states/QuickSwitchState.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/states/QuickSwitchState.java
@@ -17,10 +17,13 @@ package com.android.launcher3.uioverrides.states;
 
 import static com.android.launcher3.logging.StatsLogManager.LAUNCHER_STATE_BACKGROUND;
 
+import android.graphics.Color;
+
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
 import com.android.launcher3.util.Themes;
+import com.android.quickstep.views.DesktopTaskView;
 
 /**
  * State to indicate we are about to launch a recent task. Note that this state is only used when
@@ -43,6 +46,12 @@ public class QuickSwitchState extends BackgroundAppState {
 
     @Override
     public int getWorkspaceScrimColor(Launcher launcher) {
+        if (DesktopTaskView.DESKTOP_MODE_SUPPORTED) {
+            if (launcher.areFreeformTasksVisible()) {
+                // No scrim while freeform tasks are visible
+                return Color.TRANSPARENT;
+            }
+        }
         DeviceProfile dp = launcher.getDeviceProfile();
         if (dp.isTaskbarPresentInApps) {
             return launcher.getColor(R.color.taskbar_background);
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 43772e4279..03ddd6aa33 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -3317,4 +3317,12 @@ public class Launcher extends StatefulActivity<LauncherState>
             return false; // Return false to continue iterating through all the items.
         });
     }
+
+    /**
+     * Returns {@code true} if there are visible tasks with windowing mode set to
+     * {@link android.app.WindowConfiguration#WINDOWING_MODE_FREEFORM}
+     */
+    public boolean areFreeformTasksVisible() {
+        return false; // Base launcher does not track freeform tasks
+    }
 }