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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file GUI/View/Overlay/Viewport.cpp
//! @brief Implements function GUI::Util::viewportRectangle.
//!
//! @homepage http://www.bornagainproject.org
//! @license GNU General Public License v3 or higher (see COPYING)
//! @copyright Forschungszentrum Jülich GmbH 2018
//! @authors Scientific Computing Group at MLZ (see CITATION, AUTHORS)
//
// ************************************************************************************************
#include "GUI/View/Overlay/Viewport.h"
#include <qcustomplot.h>
QRectF GUI::Util::viewportRectangle(const QCustomPlot* qcp)
{
const QCPRange& xrange = qcp->xAxis->range();
const QCPRange& yrange = qcp->yAxis->range();
const double left = qcp->xAxis->coordToPixel(xrange.lower);
const double right = qcp->xAxis->coordToPixel(xrange.upper);
const double top = qcp->yAxis->coordToPixel(yrange.upper);
const double bottom = qcp->yAxis->coordToPixel(yrange.lower);
return {left, top, right - left, bottom - top};
}
Viewport::Viewport(const QCustomPlot* qcp)
: m_plot(qcp)
{
// the key flag to not to draw children going outside of given shape
setFlag(QGraphicsItem::ItemClipsChildrenToShape, true);
}
void Viewport::addChildGraphics(QGraphicsItem* overlay)
{
if (!childItems().contains(overlay))
overlay->setParentItem(this);
}
QRectF Viewport::boundingRect() const
{
return GUI::Util::viewportRectangle(m_plot);
}
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