Optimize widget redraw

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>

1 files changed, 3 insertions, 1 deletions

diff --git a/FTNoIR_Tracker_PT/pt_video_widget.h b/FTNoIR_Tracker_PT/pt_video_widget.h
index e67e6d57..f5663e47 100644
--- a/FTNoIR_Tracker_PT/pt_video_widget.h
+++ b/FTNoIR_Tracker_PT/pt_video_widget.h
@@ -31,7 +31,7 @@ class PTVideoWidget : public QWidget, public FrameObserver
 

 public:

     PTVideoWidget(QWidget *parent, FrameProvider* provider) : QWidget(parent), /* to avoid linker errors */ FrameObserver(provider) {

-        connect(&timer, SIGNAL(timeout()), this, SLOT(update()));

+        connect(&timer, SIGNAL(timeout()), this, SLOT(update_and_repaint()));

         timer.start(45);

     }

     void update_image(const cv::Mat &frame);

@@ -42,10 +42,12 @@ protected slots:
         QPainter painter(this);

         painter.drawPixmap(e->rect(), pixmap, e->rect());

     }

+    void update_and_repaint();

 private:

     QMutex mtx;

     QPixmap pixmap;

     QTimer timer;

+    cv::Mat _frame;

 };

 

 // ----------------------------------------------------------------------------