Add support for injecting events into ActivityContainers.

Enhanced the input system to support concurrent dispatch of touch
events on multiple displays which is required for this to work.

Add method to apply offset to PointerCoords.

Change-Id: I55fe4a9a8785ae5a2d3341d214fa3c5107f3963a
diff --git a/services/inputflinger/InputDispatcher.h b/services/inputflinger/InputDispatcher.h
index 190e7b2..29854b2 100644
--- a/services/inputflinger/InputDispatcher.h
+++ b/services/inputflinger/InputDispatcher.h
@@ -297,7 +297,7 @@
      *
      * This method may be called on any thread (usually by the input manager).
      */
-    virtual int32_t injectInputEvent(const InputEvent* event,
+    virtual int32_t injectInputEvent(const InputEvent* event, int32_t displayId,
             int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis,
             uint32_t policyFlags) = 0;
 
@@ -381,7 +381,7 @@
     virtual void notifySwitch(const NotifySwitchArgs* args);
     virtual void notifyDeviceReset(const NotifyDeviceResetArgs* args);
 
-    virtual int32_t injectInputEvent(const InputEvent* event,
+    virtual int32_t injectInputEvent(const InputEvent* event, int32_t displayId,
             int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis,
             uint32_t policyFlags);
 
@@ -525,7 +525,8 @@
                 int32_t metaState, int32_t buttonState, int32_t edgeFlags,
                 float xPrecision, float yPrecision,
                 nsecs_t downTime, int32_t displayId, uint32_t pointerCount,
-                const PointerProperties* pointerProperties, const PointerCoords* pointerCoords);
+                const PointerProperties* pointerProperties, const PointerCoords* pointerCoords,
+                float xOffset, float yOffset);
         virtual void appendDescription(String8& msg) const;
 
     protected:
@@ -959,7 +960,7 @@
         bool isSlippery() const;
     };
 
-    TouchState mTouchState;
+    KeyedVector<int32_t, TouchState> mTouchStatesByDisplay;
     TouchState mTempTouchState;
 
     // Focused application.