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// ************************************************************************** //
//
// BornAgain: simulate and fit scattering at grazing incidence
//
//! @file GUI/coregui/Views/SampleDesigner/ConnectableView.cpp
//! @brief Implements class ConnectableView
//!
//! @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/coregui/Views/SampleDesigner/ConnectableView.h"
#include "GUI/coregui/Models/SessionItem.h"
#include "GUI/coregui/Views/SampleDesigner/DesignerHelper.h"
#include "GUI/coregui/Views/SampleDesigner/NodeEditorConnection.h"
#include "GUI/coregui/utils/GUIHelpers.h"
#include "GUI/coregui/utils/StyleUtils.h"
#include <QObject>
#include <QPainter>
#include <QStyleOptionGraphicsItem>
#include <iostream>
ConnectableView::ConnectableView(QGraphicsItem* parent, QRectF rect)
: IView(parent), m_name("Unnamed"), m_color(Qt::gray), m_rect(rect), m_roundpar(0),
m_label_vspace(0)
{
setFlag(QGraphicsItem::ItemIsMovable, true);
setFlag(QGraphicsItem::ItemIsSelectable, true);
setFlag(QGraphicsItem::ItemSendsGeometryChanges);
m_label_vspace = StyleUtils::SizeOfLetterM().height() * 2.5;
m_roundpar = StyleUtils::SizeOfLetterM().height() / 3.0;
}
void ConnectableView::paint(QPainter* painter, const QStyleOptionGraphicsItem* option,
QWidget* widget)
{
Q_UNUSED(widget);
painter->setPen(Qt::gray);
if (option->state & (QStyle::State_Selected | QStyle::State_HasFocus)) {
painter->setPen(Qt::DashLine);
}
painter->setBrush(DesignerHelper::getDecorationGradient(m_color, getRectangle()));
painter->drawRoundedRect(getRectangle(), m_roundpar, m_roundpar);
if (m_label.isEmpty())
return;
painter->setPen(Qt::black);
double width = getRectangle().width() * 0.9;
double yoffset = StyleUtils::SizeOfLetterM().height() / 2; // space above the label
double height = m_label_vspace - yoffset;
QFont serifFont("Monospace", DesignerHelper::getLabelFontSize(), QFont::Normal);
painter->setFont(serifFont);
QRectF textRect(getRectangle().x() + (getRectangle().width() - width) / 2.,
getRectangle().y() + yoffset, width, height);
painter->drawText(textRect, Qt::AlignCenter, m_label);
}
NodeEditorPort* ConnectableView::addPort(const QString& name,
NodeEditorPort::EPortDirection direction,
NodeEditorPort::EPortType port_type)
{
NodeEditorPort* port = new NodeEditorPort(this, name, direction, port_type);
if (direction == NodeEditorPort::INPUT) {
m_input_ports.append(port);
} else if (direction == NodeEditorPort::OUTPUT) {
m_output_ports.append(port);
} else {
throw GUIHelpers::Error("ConnectableView::addPort() -> Unknown port type");
}
setPortCoordinates();
return port;
}
void ConnectableView::setLabel(const QString& name)
{
m_label = name;
setPortCoordinates();
}
void ConnectableView::connectInputPort(ConnectableView* other, int port_number)
{
ASSERT(other);
if (port_number >= m_input_ports.size())
throw GUIHelpers::Error("ConnectableView::connectInputPort() -> Wrong input port number");
if (other->getOutputPorts().size() != 1)
throw GUIHelpers::Error("ConnectableView::connectInputPort() -> Wrong output port number");
if (port_number < 0)
return;
NodeEditorPort* input = m_input_ports.at(port_number);
NodeEditorPort* output = other->getOutputPorts().at(0);
if (!input->isConnected(output)) {
NodeEditorConnection* conn = new NodeEditorConnection(0, scene());
conn->setPort2(input);
conn->setPort1(output);
conn->updatePath();
}
}
int ConnectableView::getInputPortIndex(NodeEditorPort* port)
{
return m_input_ports.indexOf(port);
}
// calculation of y-pos for ports
void ConnectableView::setPortCoordinates()
{
if (!getNumberOfPorts())
return;
// without main label ports can be placed over all rectangle vertical space
double hspace = getRectangle().height();
if (!getLabel().isEmpty())
hspace -= m_label_vspace;
double nintervals =
getNumberOfPorts() + 2; // one spare interval for margin between input/output ports
double dy = hspace / double(nintervals);
double ypos = getRectangle().height() - hspace + dy;
if (getNumberOfPorts() == 1) {
// if total number of ports is 1, place it in the middle
ypos = getRectangle().height() - hspace + hspace / 2;
}
int nOutPorts = getNumberOfOutputPorts();
int nport(0);
for (QGraphicsItem* item : childItems()) {
NodeEditorPort* port = dynamic_cast<NodeEditorPort*>(item);
if (!port)
continue;
if (port->isOutput()) {
port->setPos(getRectangle().width(), ypos);
} else {
if (nport == nOutPorts && nOutPorts != 0)
ypos += dy; // additional margin between output and input ports
port->setPos(0.0, ypos);
}
ypos += dy;
nport++;
}
}
int ConnectableView::getNumberOfPorts()
{
return m_input_ports.size() + m_output_ports.size();
}
int ConnectableView::getNumberOfOutputPorts()
{
return m_output_ports.size();
}
int ConnectableView::getNumberOfInputPorts()
{
return m_input_ports.size();
}
void ConnectableView::update_appearance()
{
setLabel(hyphenate(m_item->displayName()));
IView::update_appearance();
}
QString ConnectableView::hyphenate(const QString& name) const
{
QRegExp capital_letter("[A-Z]");
QRegExp number("[0-9]");
int next_capital = capital_letter.indexIn(name, 1);
int next_number = number.indexIn(name, 1);
if (next_capital > 0 && next_capital < name.size() - 2) {
int first_split_index =
(next_number > 0 && next_number < next_capital) ? next_number : next_capital;
QString result = name.left(first_split_index) + QString("\n")
+ name.right(name.size() - first_split_index);
return result;
}
return name;
}
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