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Hide overlay windows when requesting media projection permission.
authorWale Ogunwale <ogunwale@google.com>
Wed, 16 May 2018 23:42:29 +0000 (16:42 -0700)
committerAtanas Kirilov <akirilov@google.com>
Wed, 5 Sep 2018 20:37:34 +0000 (20:37 +0000)
1: Cherry-pick ag/4067454 - Setting PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS
updateNonSystemOverlayWindowsVisibilityIfNeeded on relayoutWindow

2: Cherry-pick ag/3650369 - If PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS changed on
relayoutWindow() then updateNonSystemOverlayWindowsVisibilityIfNeeded

3: Add permissions to SystemUI to allow it to hide non-system overlays

Bug: 34170870
Test: manual (see bug for poc)
Change-Id: I57cb0f390d9a78e721c5ddce49a377d385002753

packages/SystemUI/AndroidManifest.xml
packages/SystemUI/src/com/android/systemui/media/MediaProjectionPermissionActivity.java
services/core/java/com/android/server/wm/WindowManagerService.java

index eadb4bf..d2b6aa3 100644 (file)
     <!-- the ability to rename notifications posted by other apps -->
     <uses-permission android:name="android.permission.SUBSTITUTE_NOTIFICATION_APP_NAME" />
 
+    <!-- permission necessary to hide non-system overlay windows from covering up the SystemUI -->
+    <uses-permission android:name="android.permission.HIDE_NON_SYSTEM_OVERLAY_WINDOWS" />
+
     <application
         android:name=".SystemUIApplication"
         android:persistent="true"
index b2a80f4..4a67868 100644 (file)
@@ -16,6 +16,8 @@
 
 package com.android.systemui.media;
 
+import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS;
+
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.content.DialogInterface;
@@ -36,6 +38,7 @@ import android.text.TextPaint;
 import android.text.TextUtils;
 import android.text.style.StyleSpan;
 import android.util.Log;
+import android.view.Window;
 import android.view.WindowManager;
 import android.widget.CheckBox;
 import android.widget.CompoundButton;
@@ -146,7 +149,9 @@ public class MediaProjectionPermissionActivity extends Activity
         mDialog.getButton(DialogInterface.BUTTON_POSITIVE).setFilterTouchesWhenObscured(true);
 
         ((CheckBox) mDialog.findViewById(R.id.remember)).setOnCheckedChangeListener(this);
-        mDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
+        final Window w = mDialog.getWindow();
+        w.setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
+        w.addPrivateFlags(PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS);
 
         mDialog.show();
     }
index 026ac74..d6c2b21 100644 (file)
@@ -16,6 +16,7 @@
 
 package com.android.server.wm;
 
+import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS;
 import android.Manifest;
 import android.animation.ValueAnimator;
 import android.annotation.IntDef;
@@ -2809,6 +2810,11 @@ public class WindowManagerService extends IWindowManager.Stub
                         | WindowManager.LayoutParams.SYSTEM_UI_VISIBILITY_CHANGED)) != 0) {
                     win.mLayoutNeeded = true;
                 }
+
+                if ((flagChanges & PRIVATE_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS) != 0) {
+                    updateNonSystemOverlayWindowsVisibilityIfNeeded(
+                            win, win.mWinAnimator.getShown());
+                }
             }
 
             if (DEBUG_LAYOUT) Slog.v(TAG_WM, "Relayout " + win + ": viewVisibility=" + viewVisibility
@@ -11396,7 +11402,8 @@ public class WindowManagerService extends IWindowManager.Stub
     }
 
     void updateNonSystemOverlayWindowsVisibilityIfNeeded(WindowState win, boolean surfaceShown) {
-        if (!win.hideNonSystemOverlayWindowsWhenVisible()) {
+        if (!win.hideNonSystemOverlayWindowsWhenVisible()
+                && !mHidingNonSystemOverlayWindows.contains(win)) {
             return;
         }
         final boolean systemAlertWindowsHidden = !mHidingNonSystemOverlayWindows.isEmpty();