/usr/share/pyshared/Epigrass/qtgraph.py is in epigrass 2.0.4-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 | import sys
from PyQt4 import QtGui, QtCore, QtOpenGL
import elasticnodes as EN
import math
class MainWindow(QtGui.QGraphicsView):
def __init__(self,parent = None,name = None,fl = 0):
QtGui.QGraphicsView.__init__(self)
self.timerId = 0
scene = QtGui.QGraphicsScene(self)
scene.setItemIndexMethod(QtGui.QGraphicsScene.NoIndex)
scene.setSceneRect(-200, -200, 400, 400)
self.setScene(scene)
self.setCacheMode(QtGui.QGraphicsView.CacheBackground)
self.setRenderHint(QtGui.QPainter.Antialiasing)
self.setTransformationAnchor(QtGui.QGraphicsView.AnchorUnderMouse)
self.setResizeAnchor(QtGui.QGraphicsView.AnchorViewCenter)
self.scale(0.8, 0.8)
self.setMinimumSize(400, 400)
self.setWindowTitle(self.tr("Simulation Display"))
# test code
## self.node1 = Node(self.canvas, pos=(10,10,2))
## self.node2 = Node(self.canvas,pos=(100,100,2))
## self.edge = Edge(self.canvas,(10,10,100,100))
# self.map = Map('limites.map',self.canvas)
# self.canvas.update()
# self.view.resize(self.view.sizeHint())
def itemMoved(self):
if not self.timerId:
self.timerId = self.startTimer(1000 / 25)
def keyPressEvent(self, event):
key = event.key()
if key == QtCore.Qt.Key_Up:
self.centerNode.moveBy(0, -20)
elif key == QtCore.Qt.Key_Down:
self.centerNode.moveBy(0, 20)
elif key == QtCore.Qt.Key_Left:
self.centerNode.moveBy(-20, 0)
elif key == QtCore.Qt.Key_Right:
self.centerNode.moveBy(20, 0)
elif key == QtCore.Qt.Key_Plus:
self.scaleView(1.2)
elif key == QtCore.Qt.Key_Minus:
self.scaleView(1 / 1.2)
elif key == QtCore.Qt.Key_Space or key == QtCore.Qt.Key_Enter:
for item in self.scene().items():
if isinstance(item, Node):
item.setPos(-150 + QtCore.qrand() % 300, -150 + QtCore.qrand() % 300)
else:
QtGui.QGraphicsView.keyPressEvent(self, event)
def timerEvent(self, event):
nodes = [item for item in self.scene().items() if isinstance(item, Node)]
for node in nodes:
node.calculateForces()
itemsMoved = False
for node in nodes:
if node.advance():
itemsMoved = True
if not itemsMoved:
self.killTimer(self.timerId)
self.timerId = 0
def wheelEvent(self, event):
self.scaleView(math.pow(2.0, -event.delta() / 240.0))
def drawBackground(self, painter, rect):
# Shadow.
sceneRect = self.sceneRect()
rightShadow = QtCore.QRectF(sceneRect.right(), sceneRect.top() + 5, 5, sceneRect.height())
bottomShadow = QtCore.QRectF(sceneRect.left() + 5, sceneRect.bottom(), sceneRect.width(), 5)
if rightShadow.intersects(rect) or rightShadow.contains(rect):
painter.fillRect(rightShadow, QtCore.Qt.darkGray)
if bottomShadow.intersects(rect) or bottomShadow.contains(rect):
painter.fillRect(bottomShadow, QtCore.Qt.darkGray)
# Fill.
gradient = QtGui.QLinearGradient(sceneRect.topLeft(), sceneRect.bottomRight())
gradient.setColorAt(0, QtCore.Qt.white)
gradient.setColorAt(1, QtCore.Qt.lightGray)
painter.fillRect(rect.intersect(sceneRect), QtGui.QBrush(gradient))
painter.setBrush(QtCore.Qt.NoBrush)
painter.drawRect(sceneRect)
# Text.
textRect = QtCore.QRectF(sceneRect.left() + 4, sceneRect.top() + 4,
sceneRect.width() - 4, sceneRect.height() - 4)
message = self.tr("Click and drag the nodes around, and zoom with the "
"mouse wheel or the '+' and '-' keys")
font = painter.font()
font.setBold(True)
font.setPointSize(14)
painter.setFont(font)
painter.setPen(QtCore.Qt.lightGray)
painter.drawText(textRect.translated(2, 2), message)
painter.setPen(QtCore.Qt.black)
painter.drawText(textRect, message)
def scaleView(self, scaleFactor):
factor = self.matrix().scale(scaleFactor, scaleFactor).mapRect(QtCore.QRectF(0, 0, 1, 1)).width()
if factor < 0.07 or factor > 100:
return
self.scale(scaleFactor, scaleFactor)
#class Canvas(QtGui.QCanvas):
# pass
class Node(EN.Node):
def __init__(self,display,width=50.,height=50., name='Node',pos=(1,1,2),color=(0.,255.,0.)):
self.parent.__init__(display)
def setLabel(self,canvas,text,pos):
"""
Set the node label
"""
x,y,z = pos
l = QCanvasText(canvas)
l.setText(text)
l.setColor(Qt.black)
l.setFont(QFont('Times',12,50))
painter = QPainter()
self.setX(float(x))
self.setY(float(y))
self.setZ(float(1))
l.show()
return l
class Line(QtCore.QLineF):
def __init__(self,display, points, painter,color=(0,0,0)):
self.parent.__init__(points[0],points[1])
if self.length() == 0.0:
return
#draw Line
painter.setPen(QtGui.QPen(QtCore.Qt.black, 1, QtCore.Qt.SolidLine, QtCore.Qt.RoundCap, QtCore.Qt.RoundJoin))
painter.drawLine(self)
class Edge(EN.Edge):
def __init__(self,sourcenode,destnode):
self.parent.__init__(sourcenode,destnode)
class Map:
"""
Draws maps as poligons
"""
def __init__(self,fname, canvas):
#self.display = visual.display(title='Brasil', ambient=0.5)
self.canvas = canvas
self.Reader(fname)
def Reader(self, fname):
"""
Reads Grass 5.x ascii vector files.
"""
f = open(fname,'r')
all = f.readlines()
f.close()
pol = []
inicioP = [all.index(i) for i in all if i.startswith('B')]
for i in inicioP:
size = int(all[i].split()[-1])
a = [i.split() for i in all[i+1:i+1+size]]
#print a
for n,i in enumerate(a[:-1]):
x1,y1,x2,y2 = float(i[1]),float(i[0]),float(a[n+1][1]),float(a[n+1][0])
Line(self.canvas,(850+10*x1,-10*y1+50,850+10*x2,-10*y2+50))
#self.dbound(pta) #Draws the polygon
self.canvas.update()
def dbound(self,pol):
"""
Draws a polygon
pol: list of points forming the polygon
canvas: Canvas where it'll be drawn
"""
P = QCanvasPolygon(self.canvas)
P.setPen(QPen(Qt.black,10))
P.setPoints(pol)
P.show()
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
QtCore.QObject.connect(app,QtCore.SIGNAL("lastWindowClosed()"),app,QtCore.SLOT("quit()"))
w = MainWindow()
# app.setMainWidget(w)
w.show()
sys.exit(app.exec_())
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