PolygonPointView.cpp

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//  ************************************************************************************************
//
//  BornAgain: simulate and fit reflection and scattering
//
//! @file      GUI/View/Mask/PolygonPointView.cpp
//! @brief     Implements PolygonPointView class
//!
//! @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/Mask/PolygonPointView.h"
#include "GUI/Model/Device/MaskItems.h"
#include <QGraphicsSceneMouseEvent>
#include <QPainter>
 
PolygonPointView::PolygonPointView(PolygonPointItem* item)
    : IShape2DView(item)
    , m_item(item)
    , m_on_hover(false)
{
    setFlag(QGraphicsItem::ItemIsMovable);
    setFlag(QGraphicsItem::ItemSendsGeometryChanges);
}
 
PolygonPointView::~PolygonPointView()
{
    disconnectFromItem(m_item);
}
 
QRectF PolygonPointView::boundingRect() const
{
    return QRectF(-4, -4, 8, 8);
}
 
SessionItem* PolygonPointView::parameterizedItem() const
{
    return m_item;
}
 
void PolygonPointView::updateParameterizedItem(const QPointF& pos)
{
    m_item->setPosX(fromSceneX(pos.x()));
    m_item->setPosY(fromSceneY(pos.y()));
}
 
void PolygonPointView::update_view()
{
    update();
}
 
void PolygonPointView::onPropertyChange()
{
    emit propertyChanged();
}
 
void PolygonPointView::paint(QPainter* painter, const QStyleOptionGraphicsItem*, QWidget*)
{
    painter->setRenderHints(QPainter::Antialiasing);
    QBrush brush = MaskEditorHelper::getSelectionMarkerBrush();
    if (acceptHoverEvents() && m_on_hover)
        brush.setColor(Qt::red);
    painter->setBrush(brush);
    painter->setPen(MaskEditorHelper::getSelectionMarkerPen());
    painter->drawEllipse(boundingRect());
}
 
void PolygonPointView::mouseMoveEvent(QGraphicsSceneMouseEvent* event)
{
    updateParameterizedItem(event->scenePos());
}
 
void PolygonPointView::hoverEnterEvent(QGraphicsSceneHoverEvent* event)
{
    m_on_hover = true;
    emit closePolygonRequest(m_on_hover);
    IShape2DView::hoverEnterEvent(event);
}
 
void PolygonPointView::hoverLeaveEvent(QGraphicsSceneHoverEvent* event)
{
    m_on_hover = false;
    emit closePolygonRequest(m_on_hover);
    IShape2DView::hoverLeaveEvent(event);
}
 
void PolygonPointView::onItemDestroyed()
{
    m_item = nullptr;
}