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#!/usr/bin/python3
###############################################################################
##
## Copyright (C) 2014-2016, New York University.
## Copyright (C) 2011-2014, NYU-Poly.
## Copyright (C) 2006-2011, University of Utah.
## All rights reserved.
## Contact: contact@vistrails.org
##
## This file is part of VisTrails.
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are met:
##
## - Redistributions of source code must retain the above copyright notice,
## this list of conditions and the following disclaimer.
## - Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in the
## documentation and/or other materials provided with the distribution.
## - Neither the name of the New York University nor the names of its
## contributors may be used to endorse or promote products derived from
## this software without specific prior written permission.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
## AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
## THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
## PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
## CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
## EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
## PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
## OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
## WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
## OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
## ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
##
###############################################################################
##############################################################################
# create_module_appearance.py helps VisTrails package developers customize
# the appearance of modules in their packages.
from PyQt4 import QtGui, QtCore, Qt
from module_appearance import Ui_MainWindow
import sys
default_pen = QtGui.QPen()
default_pen.setWidth(2)
default_pen.setColor(QtCore.Qt.black)
selected_pen = QtGui.QPen()
selected_pen.setWidth(3)
selected_pen.setColor(QtCore.Qt.yellow)
##############################################################################
class ModuleFringeJoint(QtGui.QGraphicsEllipseItem):
brush = QtGui.QBrush(QtGui.QColor(192, 192, 192))
def __init__(self, leftLine, rightLine):
pt = rightLine.line().p1()
sz = 5
QtGui.QGraphicsEllipseItem.__init__(self, -sz/2, -sz/2, sz, sz)
self.setPos(pt)
self.leftLine = leftLine
self.rightLine = rightLine
self.setAcceptHoverEvents(True)
self.setPen(default_pen)
self.setBrush(self.brush)
self.setZValue(1.0)
self.setFlag(QtGui.QGraphicsItem.ItemIsMovable, True)
self.setFlag(QtGui.QGraphicsItem.ItemIsFocusable, True)
def removeSelf(self):
scene = self.scene()
scene.removeItem(self)
scene.removeItem(self.rightLine)
self.leftLine.rightJoint = self.rightLine.rightJoint
self.leftLine.moveRightPoint(self.rightLine.line().p2())
if self.rightLine.rightJoint is not None:
self.rightLine.rightJoint.leftLine = self.leftLine
def mouseMoveEvent(self, event):
QtGui.QGraphicsItem.mouseMoveEvent(self, event)
self.leftLine.moveRightPoint(self.scenePos())
self.rightLine.moveLeftPoint(self.scenePos())
app.window.update_text_view()
def keyPressEvent(self, event):
if event.matches(QtGui.QKeySequence.Delete):
self.removeSelf()
def hoverEnterEvent(self, event):
self.setPen(selected_pen)
self.setFocus(QtCore.Qt.OtherFocusReason)
def hoverLeaveEvent(self, event):
self.setPen(default_pen)
self.clearFocus()
@staticmethod
def toScene(pt, side):
if side == 'left':
raise Exception("unimplemented")
elif side == 'right':
return QtCore.QPointF(pt[0] * 80.0 + 100.0, pt[1] * 80.0 - 40.0)
else:
raise Exception("side must be either 'right' or 'left'")
def toVisTrails(self, side):
px, py = self.scenePos().x(), self.scenePos().y()
if side == 'left':
return ((100.0+px)/80.0, (40.0-py)/80.0)
elif side == 'right':
return ((px-100.0)/80.0, (40.0-py)/80.0)
else:
raise Exception("side must be either 'right' or 'left'")
class ModuleFringeLine(QtGui.QGraphicsLineItem):
def __init__(self, leftJoint, rightJoint, *args, **kwargs):
QtGui.QGraphicsLineItem.__init__(self, *args, **kwargs)
self.setAcceptHoverEvents(True)
self.setPen(default_pen)
self.setAcceptedMouseButtons(QtCore.Qt.LeftButton)
self.leftJoint = leftJoint
self.rightJoint = rightJoint
self.setZValue(0.0)
def mouseDoubleClickEvent(self, event):
self.createNewLine(event.pos())
app.window.update_text_view()
def hoverEnterEvent(self, event):
self.setPen(selected_pen)
def hoverLeaveEvent(self, event):
self.setPen(default_pen)
def moveLeftPoint(self, pt):
self.setLine(QtCore.QLineF(pt, self.line().p2()))
def moveRightPoint(self, pt):
self.setLine(QtCore.QLineF(self.line().p1(), pt))
def createNewLine(self, pt):
old_line = self.line()
self.setLine(QtCore.QLineF(old_line.p1(), pt))
new_line = QtCore.QLineF(pt, old_line.p2())
old_joint = self.rightJoint
new_fringe_line = ModuleFringeLine(None, self.rightJoint, new_line)
new_joint = ModuleFringeJoint(self, new_fringe_line)
self.rightJoint = new_joint
new_fringe_line.leftJoint = new_joint
if old_joint is not None:
old_joint.leftLine = new_fringe_line
scene = self.scene()
scene.addItem(new_fringe_line)
scene.addItem(new_joint)
return new_fringe_line
##############################################################################
class MainWindow(QtGui.QMainWindow):
def __init__(self, parent=None):
QtGui.QMainWindow.__init__(self)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.gv = self.ui.graphicsView
self.setup_graphics_view()
self.connect(self.ui.pushButton_Quit,
QtCore.SIGNAL("clicked()"),
QtGui.qApp.quit)
self.connect(self.ui.pushButton_symmetric,
QtCore.SIGNAL("clicked()"),
self.make_symmetric)
self.connect(self.ui.pushButton_mirrored,
QtCore.SIGNAL("clicked()"),
self.make_mirrored)
self.connect(self.ui.pushButton_Clear,
QtCore.SIGNAL("clicked()"),
self.clear_points)
def setup_graphics_view(self):
self.scene = QtGui.QGraphicsScene()
self.gv.setScene(self.scene)
self.gv.setBackgroundBrush(QtCore.Qt.gray)
pen = QtGui.QPen()
pen.setWidth(2)
pen.setColor(QtCore.Qt.black)
self.scene.addLine(-100,-40,100,-40,pen)
self.scene.addLine(-100, 40,100, 40,pen)
# l1 is the left line
self.l1 = ModuleFringeLine(None, None, -100, 40, -100, -40)
# l2 is the right line
self.l2 = ModuleFringeLine(None, None, 100, -40, 100, 40)
self.scene.addItem(self.l1)
self.scene.addItem(self.l2)
self.update_text_view()
@staticmethod
def get_points(line, side):
lst = []
while not (line.rightJoint is None):
lst.append(line.rightJoint.toVisTrails(side))
line = line.rightJoint.rightLine
return lst
def update_text_view(self):
s = ''
left_list = self.get_points(self.l1, 'left')
right_list = self.get_points(self.l2, 'right')
for (preamble, postamble,
side, pts) in zip(['reg.add_module(your_class,\n moduleLeftFringe=[(0.0, 0.0), ',
' moduleRightFringe=[(0.0, 0.0), '],
['(0.0, 1.0)],\n', '(0.0, 1.0)])\n'],
['left', 'right'],
[left_list, reversed(right_list)]):
f = pts
s += preamble
for p in pts:
s += ('(%.4f, %.4f), ' % p)
s += postamble
self.ui.textEdit.clear()
self.ui.textEdit.append(s)
##########################################################################
# slots
def make_symmetric(self):
while not (self.l2.rightJoint is None):
self.l2.rightJoint.removeSelf()
l1 = self.l1
l2 = self.l2
while not (l1.rightJoint is None):
t = l1.rightJoint.toVisTrails('left')
t = (-t[0], t[1])
p = ModuleFringeJoint.toScene(t, 'right')
l2 = l2.createNewLine(p)
l1 = l1.rightJoint.rightLine
self.update_text_view()
def make_mirrored(self):
while not (self.l2.rightJoint is None):
self.l2.rightJoint.removeSelf()
l1 = self.l1
pl = []
while not (l1.rightJoint is None):
p = l1.rightJoint.scenePos()
pl.append(QtCore.QPointF(-p.x(), p.y()))
l1 = l1.rightJoint.rightLine
l2 = self.l2
for p in reversed(pl):
l2 = l2.createNewLine(p)
self.update_text_view()
def clear_points(self):
while not (self.l2.rightJoint is None):
self.l2.rightJoint.removeSelf()
while not (self.l1.rightJoint is None):
self.l1.rightJoint.removeSelf()
self.update_text_view()
##############################################################################
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
app.window = MainWindow()
app.window.show()
app.exec_()
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