From 7a60015ba99125b493d1cb85afc072bcebb97681 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Fri, 28 Jul 2017 16:23:55 +0200
Subject: gui: don't update the main window if it's hidden

---
 cv/video-widget.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'cv')

diff --git a/cv/video-widget.cpp b/cv/video-widget.cpp
index 7d504f3a..bad81905 100644
--- a/cv/video-widget.cpp
+++ b/cv/video-widget.cpp
@@ -7,6 +7,8 @@
  */
 
 #include "video-widget.hpp"
+#include "compat/check-visible.hpp"
+
 #include <opencv2/imgproc.hpp>
 
 cv_video_widget::cv_video_widget(QWidget* parent) : QWidget(parent),
@@ -67,6 +69,9 @@ void cv_video_widget::paintEvent(QPaintEvent*)
 
 void cv_video_widget::update_and_repaint()
 {
+    if (!check_is_visible())
+        return;
+
     QMutexLocker l(&mtx);
 
     preview_size = size();
-- 
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