From a0dcb84b265de430c30c5b40ed3d9693c4c5e85d Mon Sep 17 00:00:00 2001
From: kris <zhanfenliu.cd@gmail.com>
Date: Thu, 17 Jan 2019 10:07:45 +0800
Subject: [PATCH] fix bug

---
 Sources/ObjC/UBSignatureDrawingViewController.m | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Sources/ObjC/UBSignatureDrawingViewController.m b/Sources/ObjC/UBSignatureDrawingViewController.m
index 47acad2..5036847 100644
--- a/Sources/ObjC/UBSignatureDrawingViewController.m
+++ b/Sources/ObjC/UBSignatureDrawingViewController.m
@@ -160,9 +160,24 @@ - (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
 {
     [super touchesMoved:touches withEvent:event];
     
+    //Cancel touch immediately after automatically over the artboard range
+    CGPoint touchPoint = [self.class _touchPointFromTouches:touches];
+    BOOL isContain = [self.view.layer containsPoint:touchPoint];
+    if (!isContain) {
+        [self.view touchesCancelled:touches withEvent:event];
+        return;
+    }
+
     [self _updateModelWithTouches:touches endContinuousLine:NO];
 }
 
+- (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(nullable UIEvent *)event{
+    [super touchesEnded:touches withEvent:event];
+    
+    [self.model asyncEndContinuousLine];
+    [self _updateViewFromModel];
+}
+
 #pragma mark - Private
 
 - (void)_updateModelWithTouches:(NSSet<UITouch *> *)touches endContinuousLine:(BOOL)endContinuousLine