From e87d87b53633454c5de21864b82f267a4d97686b Mon Sep 17 00:00:00 2001
From: Lu Ching Wen <k888168168@gmail.com>
Date: Fri, 4 Nov 2016 11:46:30 +0800
Subject: [PATCH 1/2] Fix low performance issue

fix low performance issue when you enable mousemove event.
---
 mouse/libsrc/src/MouseDelegate.ts | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/mouse/libsrc/src/MouseDelegate.ts b/mouse/libsrc/src/MouseDelegate.ts
index ede5a23e..daba747c 100644
--- a/mouse/libsrc/src/MouseDelegate.ts
+++ b/mouse/libsrc/src/MouseDelegate.ts
@@ -76,12 +76,20 @@ module mouse {
     export var enable = function (stage:egret.Stage) {
         isPC = egret.Capabilities.os == "Windows PC" || egret.Capabilities.os == "Mac OS";
         stageObj = stage;
-        var check = function (x:number, y:number) {
+        let preMouseX = NaN;
+        let preMouseY = NaN;
+        var check = function (x:number, y:number, hitTestTarget?:egret.DisplayObject) {
             if (currentTarget && !currentTarget.$stage) {
                 dispatch(MouseEvent.MOUSE_OUT, true, x, y);
                 dispatch(MouseEvent.ROLL_OUT, false, x, y);
                 currentTarget = null;
             }
+            if(preMouseX == x && preMouseY == y) {
+                return;
+            }else {
+                preMouseX = x;
+                preMouseY = y;
+            }
             var result = stage.$hitTest(x, y);
             if (result != null && result != stage) {
                 if (!currentTarget) {
@@ -115,13 +123,14 @@ module mouse {
             mouseY = y;
             onTouchMove.call(this, x, y, touchPointID);
             if(mouseMoveEnabled) {
-                var target = stageObj.$hitTest(x, y);
+                var result = stageObj.$hitTest(x, y);
+                var target = result;
                 if (!target) {
                     target = stageObj;
                 }
                 egret.TouchEvent.dispatchTouchEvent(target, MouseEvent.MOUSE_MOVE, true, true, x, y, touchPointID, true);
             }
-            check(x, y);
+            check(x, y, result);
         };
         var onTouchBegin = egret.sys.TouchHandler.prototype.onTouchBegin;
         egret.sys.TouchHandler.prototype.onTouchBegin = function (x:number, y:number, touchPointID:number) {
@@ -173,4 +182,4 @@ module mouse {
     export var setMouseMoveEnabled = function (enabled:boolean) {
         mouseMoveEnabled = enabled;
     }
-}
\ No newline at end of file
+}

From 8b4b83a4fefb51014e7d6fc82384fe953f5a4cea Mon Sep 17 00:00:00 2001
From: Lu Ching Wen <k888168168@gmail.com>
Date: Fri, 4 Nov 2016 11:48:40 +0800
Subject: [PATCH 2/2] Update MouseDelegate.ts

---
 mouse/libsrc/src/MouseDelegate.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mouse/libsrc/src/MouseDelegate.ts b/mouse/libsrc/src/MouseDelegate.ts
index daba747c..c99c0f21 100644
--- a/mouse/libsrc/src/MouseDelegate.ts
+++ b/mouse/libsrc/src/MouseDelegate.ts
@@ -90,7 +90,7 @@ module mouse {
                 preMouseX = x;
                 preMouseY = y;
             }
-            var result = stage.$hitTest(x, y);
+            var result = hitTestTarget || stage.$hitTest(x, y);
             if (result != null && result != stage) {
                 if (!currentTarget) {
                     currentTarget = result;