RectangleView.cpp

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//  ************************************************************************************************
//
//  BornAgain: simulate and fit reflection and scattering
//
//! @file      GUI/View/Mask/RectangleView.cpp
//! @brief     Implements RectangleView 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/RectangleView.h"
#include "GUI/Model/Device/MaskItems.h"
#include <QGraphicsSceneMouseEvent>
#include <QPainter>
 
RectangleView::RectangleView(RectangleItem* item)
    : RectangleBaseView(item)
    , m_item(item)
{
}
 
RectangleView::~RectangleView()
{
    disconnectFromItem(m_item);
}
 
QPainterPath RectangleView::shape() const
{
    QPainterPath path;
    path.addRect(m_mask_rect);
    return path;
}
 
SessionItem* RectangleView::parameterizedItem() const
{
    return m_item;
}
 
void RectangleView::onChangedX()
{
    setBlockOnProperty(true);
    m_item->setXLow(fromSceneX(this->x()));
    m_item->setXUp(fromSceneX(this->x() + m_mask_rect.width()));
    setBlockOnProperty(false);
}
 
void RectangleView::onChangedY()
{
    setBlockOnProperty(true);
    m_item->setYLow(fromSceneY(this->y() + m_mask_rect.height()));
    m_item->setYUp(fromSceneY(this->y()));
    setBlockOnProperty(false);
}
 
void RectangleView::onPropertyChange()
{
    update_view();
}
 
void RectangleView::mouseMoveEvent(QGraphicsSceneMouseEvent* event)
{
    if (m_activeHandleElement) {
        qreal xmin = std::min(event->scenePos().x(), m_resize_opposite_origin.x());
        qreal xmax = std::max(event->scenePos().x(), m_resize_opposite_origin.x());
        qreal ymin = std::min(event->scenePos().y(), m_resize_opposite_origin.y());
        qreal ymax = std::max(event->scenePos().y(), m_resize_opposite_origin.y());
 
        if (m_activeHandleElement->getHandleType() == SizeHandleElement::RESIZE) {
            m_item->setXLow(fromSceneX(xmin));
            m_item->setYLow(fromSceneY(ymax));
            m_item->setXUp(fromSceneX(xmax));
            m_item->setYUp(fromSceneY(ymin));
        } else if (m_activeHandleElement->getHandleType() == SizeHandleElement::RESIZE_HEIGHT) {
            m_item->setYLow(fromSceneY(ymax));
            m_item->setYUp(fromSceneY(ymin));
        } else if (m_activeHandleElement->getHandleType() == SizeHandleElement::RESIZE_WIDTH) {
            m_item->setXLow(fromSceneX(xmin));
            m_item->setXUp(fromSceneX(xmax));
        }
        update_view();
    } else {
        IShape2DView::mouseMoveEvent(event);
    }
}
 
//! updates position of view using item properties
void RectangleView::update_position()
{
    setX(toSceneX(m_item->xLow()));
    setY(toSceneY(m_item->yUp()));
}
 
QRectF RectangleView::mask_rectangle()
{
    return QRectF(0.0, 0.0, width(), height());
}
 
//! Returns the x-coordinate of the rectangle's left edge
 
qreal RectangleView::left() const
{
    return toSceneX(m_item->xLow());
}
 
//! Returns the x-coordinate of the rectangle's right edge
 
qreal RectangleView::right() const
{
    return toSceneX(m_item->xUp());
}
 
//! Returns the y-coordinate of the rectangle's top edge.
 
qreal RectangleView::top() const
{
    return toSceneY(m_item->yUp());
}
 
//! Returns the y-coordinate of the rectangle's bottom edge.
 
qreal RectangleView::bottom() const
{
    return toSceneY(m_item->yLow());
}
 
void RectangleView::onItemDestroyed()
{
    m_item = nullptr;
}