commit 9918234dcf9e115560144d0218682dd5050843bc
author Adrian Roos <roosa@google.com> Wed Jun 15 15:30:46 2016 -0700
committer Trevor Bunker <trevorbunker@google.com> Mon Jun 20 08:59:48 2016 -0700
tree 4ec05a605dcfc59db35a53dacafda4b891581644
parent f0823858e502d36c01a39afd1fc9384a1fe9a3f7

Enable tap-to-pulse only when needed

- Adds InputManager.setPulseEnabled().
- Adds a config overlay for the file controlling touch-to-pulse.
- Hooks up DreamManagerService with InputManager.setPulseEnabled().

Bug: 29253550
Change-Id: I4892311cc30e97d31f7be778930397fbe5c03945

services/core/java/com/android/server/input/InputManagerService.java

diff --git a/services/core/java/com/android/server/input/InputManagerService.java b/services/core/java/com/android/server/input/InputManagerService.java
index aa1d73f..74095ac 100644
--- a/services/core/java/com/android/server/input/InputManagerService.java
+++ b/services/core/java/com/android/server/input/InputManagerService.java
@@ -18,7 +18,9 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.os.Build;
 import android.os.LocaleList;
+import android.util.Log;
 import android.view.Display;
 import com.android.internal.inputmethod.InputMethodSubtypeHandle;
 import com.android.internal.os.SomeArgs;
@@ -98,8 +100,11 @@
 import java.io.FileDescriptor;
 import java.io.FileNotFoundException;
 import java.io.FileReader;
+import java.io.FileWriter;
 import java.io.IOException;
 import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
 import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -109,6 +114,7 @@
 import java.util.List;
 import java.util.Locale;
 
+import libcore.io.IoUtils;
 import libcore.io.Streams;
 import libcore.util.Objects;
 
@@ -136,6 +142,8 @@
     private final Context mContext;
     private final InputManagerHandler mHandler;
 
+    private final File mDoubleTouchGestureEnableFile;
+
     private WindowManagerCallbacks mWindowManagerCallbacks;
     private WiredAccessoryCallbacks mWiredAccessoryCallbacks;
     private boolean mSystemReady;
@@ -301,6 +309,11 @@
                 + mUseDevInputEventForAudioJack);
         mPtr = nativeInit(this, mContext, mHandler.getLooper().getQueue());
 
+        String doubleTouchGestureEnablePath = context.getResources().getString(
+                R.string.config_doubleTouchGestureEnableFile);
+        mDoubleTouchGestureEnableFile = TextUtils.isEmpty(doubleTouchGestureEnablePath) ? null :
+            new File(doubleTouchGestureEnablePath);
+
         LocalServices.addService(InputManagerInternal.class, new LocalService());
     }
 
@@ -2279,5 +2292,20 @@
         public void toggleCapsLock(int deviceId) {
             nativeToggleCapsLock(mPtr, deviceId);
         }
+
+        @Override
+        public void setPulseGestureEnabled(boolean enabled) {
+            if (mDoubleTouchGestureEnableFile != null) {
+                FileWriter writer = null;
+                try {
+                    writer = new FileWriter(mDoubleTouchGestureEnableFile);
+                    writer.write(enabled ? "1" : "0");
+                } catch (IOException e) {
+                    Log.wtf(TAG, "Unable to setPulseGestureEnabled", e);
+                } finally {
+                    IoUtils.closeQuietly(writer);
+                }
+            }
+        }
     }
 }