Method widgetMouseMoveEvent

pj_plotting/widget/src/PlotZoomer.cpp:34–54

}

void PlotZoomer::widgetMouseMoveEvent(QMouseEvent* event) {
  if (mouse_pressed_) {
    const QRect rect(event->pos(), initial_pos_);
    const QRectF zoom_rect = invTransform(rect.normalized());
    if (zoom_rect.width() > minZoomSize().width() && zoom_rect.height() > minZoomSize().height()) {
      if (!zoom_enabled_) {
        const QPixmap& pixmap = loadSvg(":/resources/svg/zoom_in.svg", currentTheme());
        QApplication::setOverrideCursor(QCursor(pixmap.scaled(24, 24)));
        zoom_enabled_ = true;
        setRubberBand(RectRubberBand);
        setTrackerMode(AlwaysOff);
        setRubberBandPen(QPen(parentWidget()->palette().windowText().color(), 1, Qt::DashLine));
      }
    } else if (zoom_enabled_) {
      zoom_enabled_ = false;
      setRubberBand(NoRubberBand);
      QApplication::restoreOverrideCursor();
    }
  }
  QwtPlotPicker::widgetMouseMoveEvent(event);
}

void PlotZoomer::widgetMouseReleaseEvent(QMouseEvent* event) {
  mouse_pressed_ = false;