Launcher3: Double tap on home screen to turn off screen

Co-authored-by: LibXZR <i@xzr.moe>
Change-Id: I554c005d5e523aca0842c78a353686e86af1a7f2

3 files changed, 23 insertions, 1 deletions

diff --git a/Android.mk b/Android.mk
index 8105d58b4b..40f3874ea3 100644
--- a/Android.mk
+++ b/Android.mk
@@ -69,6 +69,7 @@ else
   LOCAL_MIN_SDK_VERSION := 26
 endif
 LOCAL_PACKAGE_NAME := Launcher3QuickStep
+LOCAL_CERTIFICATE := platform
 LOCAL_PRIVILEGED_MODULE := true
 LOCAL_SYSTEM_EXT_MODULE := true
 LOCAL_OVERRIDES_PACKAGES := Home Launcher2 Launcher3
diff --git a/AndroidManifest-common.xml b/AndroidManifest-common.xml
index a929c14704..364e52a24b 100644
--- a/AndroidManifest-common.xml
+++ b/AndroidManifest-common.xml
@@ -41,7 +41,9 @@
     <uses-permission android:name="android.permission.QUERY_ALL_PACKAGES" />
     <!-- for rotating surface by arbitrary degree -->
     <uses-permission android:name="android.permission.ROTATE_SURFACE_FLINGER" />
-    
+    <!-- for double tap to sleep -->
+    <uses-permission android:name="android.permission.DEVICE_POWER" />
+
     <!--
     Permissions required for read/write access to the workspace data. These permission name
     should not conflict with that defined in other apps, as such an app should embed its package
diff --git a/src/com/android/launcher3/touch/WorkspaceTouchListener.java b/src/com/android/launcher3/touch/WorkspaceTouchListener.java
index 20d2ad36a5..de484de283 100644
--- a/src/com/android/launcher3/touch/WorkspaceTouchListener.java
+++ b/src/com/android/launcher3/touch/WorkspaceTouchListener.java
@@ -15,6 +15,8 @@
  */
 package com.android.launcher3.touch;
 
+import static android.provider.Settings.Secure.DOUBLE_TAP_SLEEP_GESTURE;
+
 import static android.view.MotionEvent.ACTION_CANCEL;
 import static android.view.MotionEvent.ACTION_DOWN;
 import static android.view.MotionEvent.ACTION_MOVE;
@@ -24,8 +26,12 @@ import static android.view.MotionEvent.ACTION_UP;
 import static com.android.launcher3.LauncherState.NORMAL;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_WORKSPACE_LONGPRESS;
 
+import android.content.ContentResolver;
+import android.content.Context;
 import android.graphics.PointF;
 import android.graphics.Rect;
+import android.os.PowerManager;
+import android.provider.Settings;
 import android.view.GestureDetector;
 import android.view.HapticFeedbackConstants;
 import android.view.MotionEvent;
@@ -67,15 +73,21 @@ public class WorkspaceTouchListener extends GestureDetector.SimpleOnGestureListe
 
     private int mLongPressState = STATE_CANCELLED;
 
+    private final PowerManager mPm;
+
     private final GestureDetector mGestureDetector;
 
+    private final ContentResolver mContentResolver;
+
     public WorkspaceTouchListener(Launcher launcher, Workspace workspace) {
         mLauncher = launcher;
         mWorkspace = workspace;
         // Use twice the touch slop as we are looking for long press which is more
         // likely to cause movement.
         mTouchSlop = 2 * ViewConfiguration.get(launcher).getScaledTouchSlop();
+        mPm = (PowerManager) workspace.getContext().getSystemService(Context.POWER_SERVICE);
         mGestureDetector = new GestureDetector(workspace.getContext(), this);
+        mContentResolver = workspace.getContext().getContentResolver();
     }
 
     @Override
@@ -180,4 +192,11 @@ public class WorkspaceTouchListener extends GestureDetector.SimpleOnGestureListe
             }
         }
     }
+
+    @Override
+    public boolean onDoubleTap(MotionEvent event) {
+        if (Settings.Secure.getInt(mContentResolver, DOUBLE_TAP_SLEEP_GESTURE, 0) == 1)
+            mPm.goToSleep(event.getEventTime());
+        return true;
+    }
 }