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// ************************************************************************************************
//
// BornAgain: simulate and fit reflection and scattering
//
//! @file GUI/View/Overlay/LineOverlays.cpp
//! @brief Implements classes VerticalLineOverlay and HorizontalLineOverlay.
//!
//! @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/LineOverlays.h"
#include "GUI/Model/Mask/MaskItems.h"
#include "GUI/View/Overlay/OverlayStyle.h"
#include "GUI/View/Overlay/Viewport.h"
#include "GUI/View/Plotter/ColorMap.h"
#include <QCursor>
#include <QPainter>
#include <QStyleOptionGraphicsItem>
namespace {
const double mask_width = 8.0;
const double mask_visible_width = 3.0;
} // namespace
LineOverlay::LineOverlay(LineItem* item, ColorMap* plot, bool is_projection)
: IMaskOverlay(plot)
, m_item(item)
, m_is_projection(is_projection)
{
}
void LineOverlay::paint(QPainter* painter, const QStyleOptionGraphicsItem*, QWidget*)
{
bool mask_value = m_item->maskValue();
if (m_is_projection) {
painter->setBrush(GUI::Overlay::getProjectionBrush());
painter->setPen(GUI::Overlay::getProjectionPen());
} else {
painter->setBrush(GUI::Overlay::getMaskBrush(mask_value));
painter->setPen(GUI::Overlay::getMaskPen(mask_value));
}
painter->drawRect(rectangle());
if (isSelected()) {
QPen pen;
pen.setStyle(Qt::DashLine);
painter->setPen(pen);
painter->setBrush(Qt::NoBrush);
painter->drawRect(rectangle());
}
}
QPainterPath LineOverlay::shape() const
{
QPainterPath path;
path.addRect(rectangle());
return path;
}
OverlayItem* LineOverlay::parameterizedItem() const
{
return m_item;
}
// --------------------------------------------------------------------------------------------- //
HorizontalLineOverlay::HorizontalLineOverlay(LineItem* item, ColorMap* plot, bool is_projection)
: LineOverlay(item, plot, is_projection)
{
}
QRectF HorizontalLineOverlay::rectangle() const
{
return {0., -mask_visible_width / 2., m_bounding_rect.width(), mask_visible_width};
}
void HorizontalLineOverlay::onChangedY()
{
setBlockOnProperty(true);
m_item->setPos(y2coo(this->y()));
setBlockOnProperty(false);
}
void HorizontalLineOverlay::onPropertyChange()
{
setY(y2pix(m_item->pos().dVal()));
}
void HorizontalLineOverlay::update_view()
{
QRectF plot_scene_rectangle = GUI::Util::viewportRectangle(m_plot);
setX(plot_scene_rectangle.left());
setY(y2pix(m_item->pos().dVal()));
m_bounding_rect = QRectF(0.0, -mask_width / 2., plot_scene_rectangle.width(), mask_width);
update();
}
//! Allows item movement along y, prevent movement along x
QVariant HorizontalLineOverlay::itemChange(QGraphicsItem::GraphicsItemChange change,
const QVariant& value)
{
if (isSelected() && change == ItemPositionChange && scene()) {
QPointF newPos = value.toPointF();
newPos.setX(x());
return newPos;
}
return QGraphicsItem::itemChange(change, value);
}
// --------------------------------------------------------------------------------------------- //
VerticalLineOverlay::VerticalLineOverlay(LineItem* item, ColorMap* plot, bool is_projection)
: LineOverlay(item, plot, is_projection)
{
}
QRectF VerticalLineOverlay::rectangle() const
{
return {-mask_visible_width / 2., 0.0, mask_visible_width, m_bounding_rect.height()};
}
void VerticalLineOverlay::onChangedX()
{
setBlockOnProperty(true);
m_item->setPos(x2coo(this->x()));
setBlockOnProperty(false);
}
void VerticalLineOverlay::onPropertyChange()
{
setX(x2pix(m_item->pos().dVal()));
}
void VerticalLineOverlay::update_view()
{
QRectF plot_scene_rectangle = GUI::Util::viewportRectangle(m_plot);
setX(x2pix(m_item->pos().dVal()));
setY(plot_scene_rectangle.top());
m_bounding_rect = QRectF(-mask_width / 2., 0.0, mask_width, plot_scene_rectangle.height());
update();
}
//! Allows item movement along x, prevent movement along y
QVariant VerticalLineOverlay::itemChange(QGraphicsItem::GraphicsItemChange change,
const QVariant& value)
{
if (isSelected() && change == ItemPositionChange && scene()) {
QPointF newPos = value.toPointF();
newPos.setY(y());
return newPos;
}
return QGraphicsItem::itemChange(change, value);
}
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