From 3b39f3164b936527892eb229cedb0b9bdb92aefd Mon Sep 17 00:00:00 2001
From: Brian Isganitis <brianji@google.com>
Date: Tue, 29 Jun 2021 16:03:55 -0400
Subject: [PATCH] Intercept touch events for launcher preview root view

This change prevents any accidental touches on any widgets in the
preview.

Test: Tapping on launcher preview in wallpaper app should never activate
a widget.
Bug: 191623924

Change-Id: I98d462eca699cf368dcd5894f15584f280932ccc
---
 res/layout/launcher_preview_layout.xml              |  4 ++--
 .../launcher3/graphics/LauncherPreviewRenderer.java | 13 +++++++++++++
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/res/layout/launcher_preview_layout.xml b/res/layout/launcher_preview_layout.xml
index 16916800f3..cf2f2c75ee 100644
--- a/res/layout/launcher_preview_layout.xml
+++ b/res/layout/launcher_preview_layout.xml
@@ -13,7 +13,7 @@
      See the License for the specific language governing permissions and
      limitations under the License.
 -->
-<com.android.launcher3.InsettableFrameLayout
+<view class="com.android.launcher3.graphics.LauncherPreviewRenderer$LauncherPreviewLayout"
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:launcher="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
@@ -33,4 +33,4 @@
         android:id="@+id/hotseat"
         layout="@layout/hotseat" />
 
-</com.android.launcher3.InsettableFrameLayout>
\ No newline at end of file
+</view>
\ No newline at end of file
diff --git a/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java b/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
index cfb38e5d6e..1127ff907a 100644
--- a/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
+++ b/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
@@ -46,6 +46,7 @@ import android.util.AttributeSet;
 import android.util.SparseIntArray;
 import android.view.ContextThemeWrapper;
 import android.view.LayoutInflater;
+import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.WindowInsets;
@@ -534,4 +535,16 @@ public class LauncherPreviewRenderer extends ContextWrapper
             return false;
         }
     }
+
+    /** Root layout for launcher preview that intercepts all touch events. */
+    public static class LauncherPreviewLayout extends InsettableFrameLayout {
+        public LauncherPreviewLayout(Context context, AttributeSet attrs) {
+            super(context, attrs);
+        }
+
+        @Override
+        public boolean onInterceptTouchEvent(MotionEvent ev) {
+            return true;
+        }
+    }
 }