Source code for ts2.scenery.enditem

#
#   Copyright (C) 2008-2015 by Nicolas Piganeau
#   npi@m4x.org
#
#   This program 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 2 of the License, or
#   (at your option) any later version.
#
#   This program 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 this program; if not, write to the
#   Free Software Foundation, Inc.,
#   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#

from Qt import QtCore, Qt

from ts2.scenery import abstract, helper
from ts2 import utils

BIG = 1000000000


[docs]class EndItem(abstract.TrackItem): """End items are invisible items to which the free ends of other trackitems must be connected to prevent the simulation from crashing. End items are defined by: - their titype which is ā€œEā€ - and their position (x, y) - They are single point items """
[docs] def __init__(self, parameters): """ :param dict paramaters: """ super().__init__(parameters) self._realLength = BIG egi = helper.TrackGraphicsItem(self) egi.setPos(self.origin) self._gi[0] = egi
[docs] def initialize(self, simulation): """Initialize the item after all items are loaded.""" super().initialize(simulation) if self.simulation.context in utils.Context.EDITORS: self._gi[0].setCursor(Qt.PointingHandCursor)
[docs] def for_json(self): """Dumps this end item to JSON.""" jsonData = super().for_json() jsonData.update({ "nextTiId": None }) return jsonData
def _getEnd(self): """ :return: a point far away of the scene :rtype: ``QPointF`` """ return QtCore.QPointF(-BIG, -BIG) end = property(_getEnd)
[docs] def getFollowingItem(self, precedingItem, direction=-1): """ Reimplemented from :class:`~ts2.scenery.abstract.TrackItem` . :func:`~ts2.scenery.abstract.TrackItem.getFollowingItem` :return: ``None`` if going to the free end :rtype: ``None`` or :class:`~ts2.scenery.abstract.TrackItem` """ if precedingItem == self._previousItem: return None else: return self._previousItem
[docs] def graphicsBoundingRect(self, itemId): """Reimplemented from :class:`~ts2.scenery.abstract.TrackItem` . :func:`~ts2.scenery.abstract.TrackItem.graphicsBoundingRect` :return: The bounding rectangle of the owned :class:`~ts2.scenery.helper.TrackGraphicsItem`. :rtype: ``QRectF`` """ if self.simulation.context == utils.Context.EDITOR_SCENERY: if self.tiId < 0: # Toolbox itemId return QtCore.QRectF(-50, -25, 100, 50) else: return QtCore.QRectF(-5, -5, 10, 10) else: return super().graphicsBoundingRect(itemId)
[docs] def graphicsPaint(self, p, options, itemId, widget=0): """ Reimplemented from TrackItem.graphicsPaint""" if self.simulation.context == utils.Context.EDITOR_SCENERY: pen = self.getPen() if self.selected: pen.setColor(Qt.magenta) else: pen.setColor(Qt.cyan) p.setPen(pen) p.drawEllipse(-1.5, -1.5, 3, 3) self.drawConnectionRect(p, QtCore.QPointF(0, 0))