From 610e43f90eae6da890e9c237dd1866668be9779f Mon Sep 17 00:00:00 2001
From: Brian Isganitis <brianji@google.com>
Date: Tue, 29 Jun 2021 18:12:38 -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.
Fix: 191623924

Change-Id: Iac7eab057ec33ff491365a993af75a0b06a27f7e
Merged-In: 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 2a1aec84a3..cf3da4b9b7 100644
--- a/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
+++ b/src/com/android/launcher3/graphics/LauncherPreviewRenderer.java
@@ -43,6 +43,7 @@ import android.os.Process;
 import android.util.AttributeSet;
 import android.view.ContextThemeWrapper;
 import android.view.LayoutInflater;
+import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.WindowInsets;
@@ -467,4 +468,16 @@ public class LauncherPreviewRenderer extends ContextWrapper
         view.measure(makeMeasureSpec(width, EXACTLY), makeMeasureSpec(height, EXACTLY));
         view.layout(0, 0, width, height);
     }
+
+    /** 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;
+        }
+    }
 }