From b79c9876ea6468eb6ab8f4b861ace5d1a51a400a Mon Sep 17 00:00:00 2001
From: sirius <sirius.ustc@gmail.com>
Date: Thu, 30 Jan 2020 14:02:50 +0800
Subject: [PATCH] roll back the empty painterpath generated by click mouse

---
 PaintPlugin/src/DkPaintPlugin.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/PaintPlugin/src/DkPaintPlugin.cpp b/PaintPlugin/src/DkPaintPlugin.cpp
index 50c269f..a7ca787 100644
--- a/PaintPlugin/src/DkPaintPlugin.cpp
+++ b/PaintPlugin/src/DkPaintPlugin.cpp
@@ -293,6 +293,13 @@ void DkPaintViewPort::mousePressEvent(QMouseEvent *event) {
 			if(QRectF(QPointF(), viewport->getImage().size()).contains(mapToImage(event->pos()))) {
 					
 				isOutside = false;
+
+				// roll back the empty painterpath generated by click mouse
+				if(!paths.empty())
+					if(paths.last().isEmpty())
+						undoLastPaint();
+
+				// create new painterpath
 				paths.append(QPainterPath());
 				paths.last().moveTo(mapToImage(event->pos()));
 				//paths.last().lineTo(mapToImage(event->pos())+QPointF(0.1,0));