Method fitInView

src_gui/mainwindow.cpp:765–769

fits the preview into the graphicsView

//fits the preview into the graphicsView
void MainWindow::fitInView() {
   ui->graphicsView->scene()->setSceneRect(QRectF(0, 0, input.width(), input.height()));
   ui->graphicsView->setSceneRect(ui->graphicsView->scene()->sceneRect());
   ui->graphicsView->fitInView(ui->graphicsView->scene()->sceneRect(), Qt::KeepAspectRatio);
}

//displays single color channels of the image (handled by an intensitymap)
void MainWindow::displayChannelIntensity() {