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pointelement.cpp
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pointelement.cpp
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/***************************************************************************
* Copyright (c) 2014 Martin Llavallol <m5lmodelling@gmail.com> *
* *
* This file is part of Network Editor for SUMO. *
* *
* Network Editor for SUMO is free software: you can redistribute it *
* and/or modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation, either version 3 of *
* the License, or (at your option) any later version. *
* *
* Network Editor for SUMO is distributed in the hope that it will be *
* useful but WITHOUT ANY WARRANTY; without even the implied warranty *
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with Network Editor for SUMO. If not, see *
* <http://www.gnu.org/licenses/>. *
***************************************************************************/
#include "pointelement.h"
#include "item.h"
#include <QPen>
#include <QBrush>
#include <QCursor>
#include <QGraphicsSceneMouseEvent>
#include <QMenu>
#include <QApplication>
#include <QClipboard>
#include <QMessageBox>
#include <QDebug>
PointElement::PointElement(ElementType type, qreal x, qreal y, Model *model, Item *item, QItemSelectionModel *selectionModel) : QGraphicsEllipseItem()
{
// Initialise members
this->type = type;
this->x = x;
this->y = y;
this->model = model;
this->item = item;
this->selectionModel = selectionModel;
// Set element properties
switch (type)
{
case PlainJunction:
r = 0; g = 100; b = 0; radius = 0.3; w = 0.3; z = 6; break;
case IntJunction:
r = 128; g = 0; b = 128; radius = 0.3; w = 0.3; z = 7; break;
case Connection:
r = 255; g = 255; b = 0; radius = 0.2; w = 0.15; z = 4; break;
}
setRect(x - radius, y - radius, 2 * radius, 2 * radius);
setPen(QPen(QColor(r, g, b), w));
setZValue(z);
// Initialise more members
selected = false;
editable = false;
moving = false;
// Set arrow cursor
setCursor(QCursor(Qt::ArrowCursor));
update();
}
void PointElement::select()
{
// Set selected as true, set colour as red, bring element to front and redraw
selected = true;
setPen(QPen(QColor(255, 0, 0), w));
setZValue(10);
update();
}
void PointElement::deselect()
{
// Set selected as false, set normal colour, put element back into its normal position and redraw
selected = false;
setPen(QPen(QColor(r, g, b), w));
setZValue(z);
update();
}
bool PointElement::isSelected() const
{
return selected;
}
void PointElement::switchState(Model::ElementProperty prop, bool state)
{
// Change element property
switch (prop)
{
case Model::ViewElement:
if (state) show(); else hide();
break;
case Model::EditElement:
editable = state;
if (selected) update();
break;
default: break;
}
}
void PointElement::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
selected = true;
// Prepare the element to be moved
if (editable)
{
moving = true;
lastPos = event->pos();
update();
}
// Select the element in the tree and trigger all the selection processes
if (selectionModel)
selectionModel->select(modelIndex, QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
}
void PointElement::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
// Move the element if previously clicked on it (and is in edit state)
if (moving)
{
x += event->pos().x() - lastPos.x();
y += event->pos().y() - lastPos.y();
lastPos = event->pos();
prepareGeometryChange();
setRect(x - radius, y - radius, 2 * radius, 2 * radius);
update();
}
}
void PointElement::mouseReleaseEvent(QGraphicsSceneMouseEvent *)
{
// Update the XML domDocument if the element was moved
if (moving)
{
moving = false;
updateXML();
update();
}
}
void PointElement::updateXML()
{
// Find the item referred by modelIndex and update the XML x and y properties
if (modelIndex.isValid())
{
Item *item = static_cast<Item*>(modelIndex.internalPointer());
model->editAttribute(item->xmlNode, item->xmlSubNode, "x", QString::number(x, 'f', 2));
model->editAttribute(item->xmlNode, item->xmlSubNode, "y", QString::number(y, 'f', 2));
}
}
void PointElement::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
{
// Create context menu
QMenu menu;
QAction *copyCoordsAction = menu.addAction(QObject::tr("Copy coordinates"));
QAction *pasteCoordsAction = menu.addAction(QObject::tr("Paste coordinates"));
menu.addSeparator();
QAction *deleteElementAction = menu.addAction(QObject::tr("Delete element"));
if (!editable)
{
pasteCoordsAction->setEnabled(false);
deleteElementAction->setEnabled(false);
}
// Execute the menu synchronously
QAction *selectedAction = menu.exec(event->screenPos());
if (selectedAction == copyCoordsAction) copyCoords();
if (selectedAction == pasteCoordsAction) pasteCoords();
if (selectedAction == deleteElementAction) deleteElement();
}
void PointElement::copyCoords()
{
QClipboard *clipboard = QApplication::clipboard();
clipboard->setText(QString::number(x, 'f', 2) + QString(",") + QString::number(y, 'f', 2));
}
void PointElement::pasteCoords()
{
QClipboard *clipboard = QApplication::clipboard();
QStringList tokens = clipboard->text().split(",");
if (tokens.count() == 2)
{
x = tokens[0].toDouble();
y = tokens[1].toDouble();
// Update center and border paths
prepareGeometryChange();
setRect(x - radius, y - radius, 2 * radius, 2 * radius);
update();
updateXML();
}
}
void PointElement::deleteElement()
{
qDebug() << "PointElement::deleteElement: name=" << item->name;
if (!editable) { return; }
// only delete events for connections need to be handled
// junctions are already handled by PathElement::deleteElement()
if (type == PointElement::Connection) {
model->deleteConnection(item);
} else {
qDebug() << "PointElement::deleteElement: unknown type";
}
}
void PointElement::highlight()
{
blink = 0;
// Start timer
timer.start(100, this);
}
void PointElement::timerEvent(QTimerEvent *)
{
// Normally the blink parameter is -1; when the highlight methods are called it is changed to 0
if (blink >= 0)
{
// Every time the timer emits a call, the element is selected or deselected
if (selected) deselect(); else select();
update();
++blink;
// After 6 blinks, the timer is stopped
if (blink == 6)
{
timer.stop();
blink = -1;
}
}
}
Item* PointElement::getItem()
{
return item;
}