commit ca9bc702df5c14a89c9b8b0109a05894bf74962e
author Jeff Brown <jeffbrown@google.com> Tue Feb 11 14:32:56 2014 -0800
committer Jeff Brown <jeffbrown@google.com> Tue Feb 11 14:47:48 2014 -0800
tree fcd28e7c5960a9afef070cf7926b694ff64efba9
parent ed8bb0159c03be9eb68af4dc22b7e100ab2ac52b

Add support for injecting events into ActivityContainers.

Modified ActivityView to inject touch events it receives back into
its activity container.  The container then injects the event into
the input system along with the display id of the underlying virtual
display.

Change-Id: I23d018a2f7dd30f1f833f522eb7f143b43d8e637

services/core/java/com/android/server/am/ActivityStackSupervisor.java

diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index 8f8b2a2..6ed30d9 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -61,6 +61,8 @@
 import android.hardware.display.DisplayManager.DisplayListener;
 import android.hardware.display.DisplayManagerGlobal;
 import android.hardware.display.VirtualDisplay;
+import android.hardware.input.InputManager;
+import android.hardware.input.InputManagerInternal;
 import android.os.Binder;
 import android.os.Bundle;
 import android.os.Debug;
@@ -81,9 +83,11 @@
 import android.util.SparseIntArray;
 import android.view.Display;
 import android.view.DisplayInfo;
+import android.view.InputEvent;
 import android.view.Surface;
 import com.android.internal.app.HeavyWeightSwitcherActivity;
 import com.android.internal.os.TransferPipe;
+import com.android.server.LocalServices;
 import com.android.server.am.ActivityManagerService.PendingActivityLaunch;
 import com.android.server.am.ActivityStack.ActivityState;
 import com.android.server.wm.WindowManagerService;
@@ -225,6 +229,8 @@
     /** Mapping from displayId to display current state */
     private SparseArray<ActivityDisplay> mActivityDisplays = new SparseArray<ActivityDisplay>();
 
+    InputManagerInternal mInputManagerInternal;
+
     public ActivityStackSupervisor(ActivityManagerService service) {
         mService = service;
         PowerManager pm = (PowerManager)mService.mContext.getSystemService(Context.POWER_SERVICE);
@@ -255,6 +261,8 @@
 
             createStackOnDisplay(null, HOME_STACK_ID, Display.DEFAULT_DISPLAY);
             mHomeStack = mFocusedStack = mLastFocusedStack = getStack(HOME_STACK_ID);
+
+            mInputManagerInternal = LocalServices.getService(InputManagerInternal.class);
         }
     }
 
@@ -2941,7 +2949,7 @@
         }
 
         @Override
-        public void attachToDisplay(int displayId) throws RemoteException {
+        public void attachToDisplay(int displayId) {
             synchronized (mService) {
                 ActivityDisplay activityDisplay = mActivityDisplays.get(displayId);
                 if (activityDisplay == null) {
@@ -2952,13 +2960,28 @@
         }
 
         @Override
-        public int getDisplayId() throws RemoteException {
+        public int getDisplayId() {
             if (mActivityDisplay != null) {
                 return mActivityDisplay.mDisplayId;
             }
             return -1;
         }
 
+        @Override
+        public boolean injectEvent(InputEvent event) {
+            final long origId = Binder.clearCallingIdentity();
+            try {
+                if (mActivityDisplay != null) {
+                    return mInputManagerInternal.injectInputEvent(event,
+                            mActivityDisplay.mDisplayId,
+                            InputManager.INJECT_INPUT_EVENT_MODE_ASYNC);
+                }
+                return false;
+            } finally {
+                Binder.restoreCallingIdentity(origId);
+            }
+        }
+
         private void detachLocked() {
             if (DEBUG_STACK) Slog.d(TAG, "detachLocked: " + this + " from display="
                     + mActivityDisplay + " Callers=" + Debug.getCallers(2));
@@ -2972,7 +2995,7 @@
         }
 
         @Override
-        public void detachFromDisplay() throws RemoteException {
+        public void detachFromDisplay() {
             synchronized (mService) {
                 detachLocked();
             }