From 0522acca7605709096b11cc8e91d7fb69eca88b6 Mon Sep 17 00:00:00 2001
From: Lawrence Thorpe <thorpe_lawrence@yahoo.co.uk>
Date: Thu, 2 Nov 2017 12:49:39 +0000
Subject: [PATCH] Fix: delete scene

---
 src/mainwindow.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index ecc60ff..8ccc0e4 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -9,6 +9,7 @@ MainWindow::MainWindow(QWidget *parent) :
     QIcon::setThemeName("oxygen");
 #endif
     ui->setupUi(this);
+    scene = nullptr;
     ui->actionUndo->setEnabled(false);
 }
 
@@ -40,7 +41,8 @@ void MainWindow::updateProgress(int progress) {
 
 void MainWindow::showImage(QImage image) {
     this->image = image;
-    //delete scene;
+    if (scene)
+        delete scene;
     scene = new QGraphicsScene(ui->graphicsView);
     scene->addPixmap(QPixmap::fromImage(image));
     ui->graphicsView->setScene(scene);