Freezes preview instead of toggling widgets

EyeRecToo/EyeRecToo.pro

@@ -2,6 +2,8 @@ QT       += core gui multimedia
 
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
+CONFIG += c++14
+
 TOP = $$PWD
 
 TARGET = EyeRecToo

EyeRecToo/src/CameraWidget.cpp

@@ -379,7 +379,10 @@ void CameraWidget::validatePoint(QPointF &point)
 bool CameraWidget::shouldUpdate(Timestamp t)
 {
     if (!this->isVisible())
-        return false;
+		return false;
+
+	if (gFreezePreview)
+		return false;
 
 	/* TODO: Right now, we don't update every frame to save resources.
 	 * Make this parametrizable or move to faster drawing methods.

EyeRecToo/src/MainWindow.cpp

@@ -597,7 +597,5 @@ void MainWindow::toggleRecording()
 
 void MainWindow::togglePreview()
 {
-    ui->fieldCam->click();
-    ui->leftEyeCam->click();
-    ui->rightEyeCam->click();
+	gFreezePreview = !gFreezePreview;
 }

EyeRecToo/src/utils.cpp

@@ -24,6 +24,7 @@ std::vector<QString> gLogBuffer;
 PerformanceMonitor gPerformanceMonitor;
 
 bool gCalibrating = false;
+bool gFreezePreview = false;
 
 /*
  * Utility functions

EyeRecToo/src/utils.h

@@ -112,5 +112,6 @@ extern std::vector<QString> gLogBuffer;
 extern PerformanceMonitor gPerformanceMonitor;
 
 extern bool gCalibrating;
+extern bool gFreezePreview;
 
 #endif // UTILS_H