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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file GUI/View/Overlay/SizeHandle.cpp
//! @brief Implements class SizeHandle.
//!
//! @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/SizeHandle.h"
#include "GUI/View/Overlay/OverlayStyle.h"
#include <QCursor>
#include <QGraphicsSceneMouseEvent>
#include <QPainter>
#include <array>
namespace {
const std::array<Qt::CursorShape, 8> cursors{
Qt::SizeFDiagCursor, Qt::SizeVerCursor, Qt::SizeBDiagCursor, Qt::SizeHorCursor,
Qt::SizeFDiagCursor, Qt::SizeVerCursor, Qt::SizeBDiagCursor, Qt::SizeHorCursor};
} // namespace
SizeHandle::SizeHandle(int i, QGraphicsObject* parent)
: m_i(i)
{
setParentItem(parent);
hide();
setCursor(::cursors[i]);
}
QRectF SizeHandle::boundingRect() const
{
return {-4, -4, 8, 8};
}
void SizeHandle::paint(QPainter* painter, const QStyleOptionGraphicsItem*, QWidget*)
{
painter->setRenderHints(QPainter::Antialiasing);
painter->setBrush(GUI::Overlay::getSelectionMarkerBrush());
painter->setPen(GUI::Overlay::getSelectionMarkerPen());
if (m_i % 2 == 1)
painter->drawRect(boundingRect());
else
painter->drawEllipse(boundingRect());
}
void SizeHandle::mousePressEvent(QGraphicsSceneMouseEvent*)
{
emit requestResizing(true);
}
void SizeHandle::mouseMoveEvent(QGraphicsSceneMouseEvent* event)
{
emit requestEnactResize(m_i, event->scenePos());
}
void SizeHandle::mouseReleaseEvent(QGraphicsSceneMouseEvent*)
{
emit requestResizing(false);
}
void SizeHandle::updateHandlePosition(const QRectF& rect)
{
switch (m_i) {
case 0:
setPos(rect.topLeft());
break;
case 1:
setPos(QPointF(rect.x() + rect.width() / 2, rect.y()));
break;
case 2:
setPos(rect.topRight());
break;
case 3:
setPos(QPointF(rect.x() + rect.width(), rect.y() + rect.height() / 2));
break;
case 4:
setPos(rect.bottomRight());
break;
case 5:
setPos(QPointF(rect.x() + rect.width() / 2, rect.y() + rect.height()));
break;
case 6:
setPos(rect.bottomLeft());
break;
case 7:
setPos(QPointF(rect.x(), rect.y() + rect.height() / 2));
break;
}
}
void SizeHandle::update_view()
{
update();
}
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