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1 #!/usr/bin/python
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2
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3 from PyQt4.QtGui import *
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4 from PyQt4.QtCore import *
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5 import sys
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47
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6 import xml.dom.minidom as md
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44
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7
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53
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8 """
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9 Author: Windel Bouwman
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10 Year: 2012
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11 Description: This script implements a diagram editor.
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12 run with python 3.x as:
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13 $ python [thisfile.py]
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14 """
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15
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55
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16 class ArrowHead(QGraphicsPathItem):
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17 def __init__(self, parent):
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18 super(ArrowHead, self).__init__(parent)
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19 arrowPath = QPainterPath(QPointF(0.0, 0.0))
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20 arrowPath.lineTo(-6.0, 10.0)
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21 arrowPath.lineTo(6.0, 10.0)
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22 arrowPath.lineTo(0.0, 0.0)
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23 self.setPath(arrowPath)
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24 pen = QPen(Qt.blue, 2)
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25 self.setPen(pen)
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26 self.setBrush(QBrush(pen.color()))
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27
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28 class LinePart(QGraphicsLineItem):
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29 def __init__(self, x1, y1, x2, y2):
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30 super(LinePart, self).__init__(x1, y1, x2, y2)
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31 self.setFlags(self.ItemIsSelectable)
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32 def boundingRect(self):
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33 rect = super(LinePart, self).boundingRect()
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34 rect.adjust(-2, -2, 2, 2)
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35 return rect
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36
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37 #class Connection(QGraphicsItemGroup):
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49
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38 class Connection(QGraphicsPathItem):
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53
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39 """ Implementation of a connection between blocks """
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44
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40 def __init__(self, fromPort, toPort):
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49
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41 super(Connection, self).__init__()
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44
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42 self.pos1 = None
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43 self.pos2 = None
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53
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44 self.fromPort = None
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45 self.toPort = None
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51
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46 #self.setFlags(self.ItemIsSelectable | self.ItemIsMovable)
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55
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47 self.setFlag(self.ItemIsSelectable, True)
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48 self.setFlag(self.ItemClipsToShape, True)
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49 self.pen = QPen(Qt.blue, 2)
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50 self.pen.setCapStyle(Qt.RoundCap)
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51 self.setPen(self.pen)
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52 self.arrowhead = ArrowHead(self)
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53 #self.addToGroup(self.arrowhead)
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54 #self.body = QGraphicsPathItem(self)
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55 #self.body.setPen(self.pen)
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56 #self.addToGroup(self.body)
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57 self.lineItems = []
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58 self.setFromPort(fromPort)
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59 self.setToPort(toPort)
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60 def setFromPort(self, fromPort):
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53
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61 if self.fromPort:
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62 self.fromPort.posCallbacks.remove(self.setBeginPos)
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63 self.fromPort.connection = None
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64 self.fromPort = fromPort
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65 if self.fromPort:
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66 self.fromPort.connection = self
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67 self.setBeginPos(fromPort.scenePos())
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68 self.fromPort.posCallbacks.append(self.setBeginPos)
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69 def setToPort(self, toPort):
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70 if self.toPort:
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71 self.toPort.posCallbacks.remove(self.setEndPos)
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72 self.toPort.connection = None
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73 self.toPort = toPort
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74 if self.toPort:
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75 self.setEndPos(toPort.scenePos())
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76 self.toPort.connection = self
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77 self.toPort.posCallbacks.append(self.setEndPos)
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78 def releasePorts(self):
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79 self.setFromPort(None)
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80 self.setToPort(None)
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81 def setBeginPos(self, pos1):
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82 self.pos1 = pos1
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83 self.updateLineStukken()
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84 def setEndPos(self, endpos):
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85 self.pos2 = endpos
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86 self.updateLineStukken()
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87 def itemChange(self, change, value):
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88 if change == self.ItemSelectedHasChanged:
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89 pass # TODO, do something useful here.
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90 return super(Connection, self).itemChange(change, value)
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91 def updateLineStukken(self):
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92 """
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93 This algorithm determines the optimal routing of all signals.
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94 TODO: implement nice automatic line router
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95 """
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96 if self.pos1 is None or self.pos2 is None:
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97 return
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98
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50
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99 # TODO: do not get the scene here?
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46
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100 # TODO: create pieces of lines.
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101
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102 # Determine the begin and end positions:
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103 pts = editor.diagramScene.vias(self.pos1, self.pos2)
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104
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105 self.arrowhead.setPos(self.pos2)
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106 if pts[-1].x() < pts[-2].x():
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107 self.arrowhead.setRotation(-90)
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108 else:
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109 self.arrowhead.setRotation(90)
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110
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111 usePath = True
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112 if usePath:
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113 path = QPainterPath(pts[0])
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114 # Now move from p2 to p3 without hitting blocks:
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115 for pt in pts[1:]:
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116 path.lineTo(pt)
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117 for pt in reversed(pts[0:-1]):
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118 path.lineTo(pt)
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119 path.closeSubpath()
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120
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121 #self.body.setPath(path)
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122 self.setPath(path)
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123 #outline = QGraphicsPathItem(self.shape())
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124 #editor.diagramScene.addItem(outline)
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125 else:
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126 # Delete old line items:
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127 for li in self.lineItems:
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128 editor.diagramScene.removeItem(li)
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129 #self.removeFromGroup(li)
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130 self.lineItems = []
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131 for a, b in zip(pts[0:-1], pts[1:]):
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132 li = LinePart(a.x(),a.y(),b.x(),b.y())
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133 #self.addToGroup(li)
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134 editor.diagramScene.addItem(li)
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135 self.lineItems.append(li)
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136
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137 class ParameterDialog(QDialog):
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138 def __init__(self, block, parent = None):
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139 super(ParameterDialog, self).__init__(parent)
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140 self.block = block
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141 self.button = QPushButton('Ok', self)
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142 l = QGridLayout(self)
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143 l.addWidget(QLabel('Name:', self), 0, 0)
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51
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144 self.nameEdit = QLineEdit(self.block.name)
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145 l.addWidget(self.nameEdit, 0, 1)
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146 l.addWidget(self.button, 1, 0)
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147 self.button.clicked.connect(self.OK)
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148 def OK(self):
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149 self.block.setName(self.nameEdit.text())
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150 self.close()
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151 # TODO: merge dialogs?
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152
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153 class AddPortDialog(QDialog):
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154 def __init__(self, block, parent = None):
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155 super(AddPortDialog, self).__init__(parent)
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156 self.block = block
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157 l = QGridLayout(self)
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158 l.addWidget(QLabel('Name:', self), 0, 0)
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159 self.nameEdit = QLineEdit('bla')
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160 l.addWidget(self.nameEdit, 0, 1)
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161 self.button = QPushButton('Ok', self)
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162 l.addWidget(self.button, 1, 0)
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163 self.button.clicked.connect(self.OK)
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164
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165 def OK(self):
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166 name = self.nameEdit.text()
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167 self.block.addOutput(PortItem(name, self.block, 'output'))
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168 self.close()
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169
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170 class PortItem(QGraphicsPathItem):
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171 """ Represents a port to a subsystem """
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172 def __init__(self, name, block, direction):
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173 super(PortItem, self).__init__(block)
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174 #QRectF(-6,-6,12.0,12.0)
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175 self.connection = None
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176 path = QPainterPath()
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177 if direction == 'input':
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178 d = 5.0
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179 path.moveTo(-d, -d)
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180 path.lineTo(0.0, 0.0)
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181 path.lineTo(-d, d)
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182 else:
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183 d = 5.0
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184 path.moveTo(0.0, -d)
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185 path.lineTo(d, 0.0)
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186 path.lineTo(0.0, d)
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187 self.setPath(path)
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188 self.direction = direction
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189 self.block = block
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190 self.setCursor(QCursor(Qt.CrossCursor))
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191 #self.setBrush(QBrush(Qt.red))
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192 self.setPen(QPen(Qt.blue, 2))
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193 self.name = name
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194 self.textItem = QGraphicsTextItem(name, self)
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195 self.setName(name)
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196 self.posCallbacks = []
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197 self.setFlag(self.ItemSendsScenePositionChanges, True)
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198 def boundingRect(self):
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199 rect = super(PortItem, self).boundingRect()
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200 dx = 8
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201 rect.adjust(-dx, -dx, dx, dx)
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202 return rect
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53
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203 def setName(self, name):
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204 self.name = name
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205 self.textItem.setPlainText(name)
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206 rect = self.textItem.boundingRect()
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207 lw, lh = rect.width(), rect.height()
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208 if self.direction == 'input':
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209 lx = 3
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210 else:
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211 lx = -3 - lw
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212 self.textItem.setPos(lx, -lh / 2) # TODO
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213 def itemChange(self, change, value):
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214 if change == self.ItemScenePositionHasChanged:
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215 for cb in self.posCallbacks:
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216 cb(value)
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217 return value
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218 return super(PortItem, self).itemChange(change, value)
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219 def mousePressEvent(self, event):
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220 if self.direction == 'output':
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221 editor.startConnection(self)
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222
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223 class OutputPort(PortItem):
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224 # TODO: create a subclass OR make a member porttype
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225 pass
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226
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227 # Block part:
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228 class HandleItem(QGraphicsEllipseItem):
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229 """ A handle that can be moved by the mouse """
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230 def __init__(self, parent=None):
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231 dx = 12.0
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232 super(HandleItem, self).__init__(QRectF(-0.5*dx,-0.5*dx,dx,dx), parent)
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233 self.posChangeCallbacks = []
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234 self.setBrush(QBrush(Qt.white))
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235 self.setFlag(self.ItemSendsScenePositionChanges, True)
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236 self.setFlag(self.ItemIsMovable, True)
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237 self.setCursor(QCursor(Qt.SizeFDiagCursor))
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238 def mouseMoveEvent(self, event):
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239 """ Move function without moving the other selected elements """
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240 p = self.mapToParent(event.pos())
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241 self.setPos(p)
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242 def itemChange(self, change, value):
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243 if change == self.ItemPositionChange:
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244 for cb in self.posChangeCallbacks:
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245 res = cb(value)
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246 if res:
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247 value = res
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248 return value
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249 # Call superclass method:
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250 return super(HandleItem, self).itemChange(change, value)
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251
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252 class BlockItem(QGraphicsRectItem):
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253 """
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254 Represents a block in the diagram
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255 Has an x and y and width and height
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256 width and height can only be adjusted with a tip in the lower right corner.
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257
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258 - in and output ports
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259 - parameters
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260 - description
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261 """
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262 def __init__(self, name='Untitled', parent=None):
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263 super(BlockItem, self).__init__(parent)
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264 # Properties of the rectangle:
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265 self.setPen(QPen(Qt.blue, 2))
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266 self.setBrush(QBrush(Qt.lightGray))
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267 self.setFlags(self.ItemIsSelectable | self.ItemIsMovable)
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268 self.setBoundingRegionGranularity(1)
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269 self.setCursor(QCursor(Qt.PointingHandCursor))
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270 self.label = QGraphicsTextItem(name, self)
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271 self.name = name
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272 # Create corner for resize:
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273 self.sizer = HandleItem(self)
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274 self.sizer.posChangeCallbacks.append(self.changeSize) # Connect the callback
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275 self.sizer.setVisible(False)
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276
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277 # Inputs and outputs of the block:
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278 self.inputs = []
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279 self.outputs = []
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280 # Update size:
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281 self.sizer.setPos(60, 40) # This is a better resize function
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282 #self.changeSize(60, 40) # TODO: create a wrapper function
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283 def editParameters(self):
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284 pd = ParameterDialog(self, self.window())
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285 pd.exec_()
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286 def addPort(self):
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287 pd = AddPortDialog(self, self.window())
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288 pd.exec_()
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289 def setName(self, name):
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290 self.name = name
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291 self.label.setPlainText(name)
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292 def addInput(self, i):
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293 self.inputs.append(i)
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294 self.updateSize()
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295 def addOutput(self, o):
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296 self.outputs.append(o)
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297 self.updateSize()
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298 def boundingRect(self):
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299 rect = super(BlockItem, self).boundingRect()
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300 rect.adjust(-3, -3, 3, 3)
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301 return rect
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302
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303 def contextMenuEvent(self, event):
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304 menu = QMenu()
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305 pa = menu.addAction('Parameters')
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306 pa.triggered.connect(self.editParameters)
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307 pa = menu.addAction('Add port')
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308 pa.triggered.connect(self.addPort)
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309 menu.exec_(event.screenPos())
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310 def itemChange(self, change, value):
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311 if change == self.ItemSelectedHasChanged:
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312 self.sizer.setVisible(value)
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313 return super(BlockItem, self).itemChange(change, value)
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314
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315 def updateSize(self):
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316 rect = self.rect()
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317 h, w = rect.height(), rect.width()
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318 if len(self.inputs) == 1:
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319 self.inputs[0].setPos(0.0, h / 2)
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320 elif len(self.inputs) > 1:
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321 y = 15
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322 dy = (h - 30) / (len(self.inputs) - 1)
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323 for inp in self.inputs:
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324 inp.setPos(0.0, y)
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325 y += dy
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326 if len(self.outputs) == 1:
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327 self.outputs[0].setPos(w, h / 2)
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328 elif len(self.outputs) > 1:
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329 y = 15
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330 dy = (h - 30) / (len(self.outputs) - 1)
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331 for outp in self.outputs:
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332 outp.setPos(w, y)
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333 y += dy
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334
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55
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335 def changeSize(self, p):
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49
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336 """ Resize block function """
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337 w, h = p.x(), p.y()
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49
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338 # Limit the block size:
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339 if h < 20:
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340 h = 20
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341 if w < 40:
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342 w = 40
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343 self.setRect(0.0, 0.0, w, h)
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344 # center label:
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345 rect = self.label.boundingRect()
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346 lw, lh = rect.width(), rect.height()
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347 lx = (w - lw) / 2
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348 ly = (h - lh) / 2
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349 self.label.setPos(lx, ly)
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350 # Update port positions:
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351 self.updateSize()
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55
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352 return QPointF(w, h)
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44
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353
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354 class EditorGraphicsView(QGraphicsView):
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355 def __init__(self, scene, parent=None):
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356 QGraphicsView.__init__(self, scene, parent)
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54
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357 self.setDragMode(QGraphicsView.RubberBandDrag)
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55
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358 def wheelEvent(self, event):
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359 pos = event.pos()
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360 posbefore = self.mapToScene(pos)
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361 degrees = event.delta() / 8.0
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362 sx = (100.0 + degrees) / 100.0
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363 self.scale(sx, sx)
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364 event.accept()
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44
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365 def dragEnterEvent(self, event):
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366 if event.mimeData().hasFormat('component/name'):
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367 event.accept()
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368 def dragMoveEvent(self, event):
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369 if event.mimeData().hasFormat('component/name'):
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370 event.accept()
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371 def dropEvent(self, event):
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372 if event.mimeData().hasFormat('component/name'):
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48
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373 name = bytes(event.mimeData().data('component/name')).decode()
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44
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374 b1 = BlockItem(name)
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375 b1.setPos(self.mapToScene(event.pos()))
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376 self.scene().addItem(b1)
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377
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|
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378 class LibraryModel(QStandardItemModel):
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379 def __init__(self, parent=None):
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|
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380 QStandardItemModel.__init__(self, parent)
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381 def mimeTypes(self):
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382 return ['component/name']
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383 def mimeData(self, idxs):
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384 mimedata = QMimeData()
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385 for idx in idxs:
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386 if idx.isValid():
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45
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387 txt = self.data(idx, Qt.DisplayRole) # python 3
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44
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388 mimedata.setData('component/name', txt)
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389 return mimedata
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390
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|
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391 class DiagramScene(QGraphicsScene):
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54
|
392 """ Save and load and deletion of item"""
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44
|
393 def __init__(self, parent=None):
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394 super(DiagramScene, self).__init__(parent)
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55
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395 #circle = QGraphicsEllipseItem(-10,-10,20,20)
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396 #self.addItem(circle)
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397
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46
|
398 def saveDiagram(self, filename):
|
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54
|
399 items = self.items()
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|
46
|
400 blocks = [item for item in items if type(item) is BlockItem]
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49
|
401 connections = [item for item in items if type(item) is Connection]
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47
|
402
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|
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403 doc = md.Document()
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404 modelElement = doc.createElement('system')
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405 doc.appendChild(modelElement)
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|
406 for block in blocks:
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|
407 blockElement = doc.createElement("block")
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408 x, y = block.scenePos().x(), block.scenePos().y()
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409 rect = block.rect()
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|
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410 w, h = rect.width(), rect.height()
|
|
50
|
411 blockElement.setAttribute("name", block.name)
|
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49
|
412 blockElement.setAttribute("x", str(int(x)))
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|
|
413 blockElement.setAttribute("y", str(int(y)))
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|
|
414 blockElement.setAttribute("width", str(int(w)))
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|
|
415 blockElement.setAttribute("height", str(int(h)))
|
|
48
|
416 for inp in block.inputs:
|
|
|
417 portElement = doc.createElement("input")
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|
|
418 portElement.setAttribute("name", inp.name)
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|
|
419 blockElement.appendChild(portElement)
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|
|
420 for outp in block.outputs:
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|
|
421 portElement = doc.createElement("output")
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|
|
422 portElement.setAttribute("name", outp.name)
|
|
|
423 blockElement.appendChild(portElement)
|
|
47
|
424 modelElement.appendChild(blockElement)
|
|
49
|
425 for connection in connections:
|
|
|
426 connectionElement = doc.createElement("connection")
|
|
|
427 fromPort = connection.fromPort.name
|
|
|
428 toPort = connection.toPort.name
|
|
50
|
429 fromBlock = connection.fromPort.block.name
|
|
|
430 toBlock = connection.toPort.block.name
|
|
49
|
431 connectionElement.setAttribute("fromBlock", fromBlock)
|
|
|
432 connectionElement.setAttribute("fromPort", fromPort)
|
|
|
433 connectionElement.setAttribute("toBlock", toBlock)
|
|
|
434 connectionElement.setAttribute("toPort", toPort)
|
|
|
435 modelElement.appendChild(connectionElement)
|
|
46
|
436 with open(filename, 'w') as f:
|
|
47
|
437 f.write(doc.toprettyxml())
|
|
46
|
438
|
|
|
439 def loadDiagram(self, filename):
|
|
|
440 try:
|
|
47
|
441 doc = md.parse(filename)
|
|
46
|
442 except IOError as e:
|
|
|
443 print('{0} not found'.format(filename))
|
|
|
444 return
|
|
47
|
445 sysElements = doc.getElementsByTagName('system')
|
|
|
446 blockElements = doc.getElementsByTagName('block')
|
|
|
447 for sysElement in sysElements:
|
|
|
448 blockElements = sysElement.getElementsByTagName('block')
|
|
|
449 for blockElement in blockElements:
|
|
|
450 x = float(blockElement.getAttribute('x'))
|
|
|
451 y = float(blockElement.getAttribute('y'))
|
|
|
452 w = float(blockElement.getAttribute('width'))
|
|
|
453 h = float(blockElement.getAttribute('height'))
|
|
|
454 name = blockElement.getAttribute('name')
|
|
|
455 block = BlockItem(name)
|
|
54
|
456 self.addItem(block)
|
|
46
|
457 block.setPos(x, y)
|
|
|
458 block.sizer.setPos(w, h)
|
|
48
|
459 # Load ports:
|
|
49
|
460 portElements = blockElement.getElementsByTagName('input')
|
|
48
|
461 for portElement in portElements:
|
|
49
|
462 name = portElement.getAttribute('name')
|
|
53
|
463 inp = PortItem(name, block, 'input')
|
|
49
|
464 block.addInput(inp)
|
|
|
465 portElements = blockElement.getElementsByTagName('output')
|
|
|
466 for portElement in portElements:
|
|
|
467 name = portElement.getAttribute('name')
|
|
53
|
468 outp = PortItem(name, block, 'output')
|
|
49
|
469 block.addOutput(outp)
|
|
48
|
470 connectionElements = sysElement.getElementsByTagName('connection')
|
|
|
471 for connectionElement in connectionElements:
|
|
50
|
472 fromBlock = connectionElement.getAttribute('fromBlock')
|
|
|
473 fromPort = connectionElement.getAttribute('fromPort')
|
|
|
474 toBlock = connectionElement.getAttribute('toBlock')
|
|
|
475 toPort = connectionElement.getAttribute('toPort')
|
|
|
476 fromPort = self.findPort(fromBlock, fromPort)
|
|
|
477 toPort = self.findPort(toBlock, toPort)
|
|
|
478 connection = Connection(fromPort, toPort)
|
|
54
|
479 self.addItem(connection)
|
|
50
|
480 def findPort(self, blockname, portname):
|
|
54
|
481 items = self.items()
|
|
50
|
482 blocks = [item for item in items if type(item) is BlockItem]
|
|
|
483 for block in [b for b in blocks if b.name == blockname]:
|
|
|
484 for port in block.inputs + block.outputs:
|
|
|
485 if port.name == portname:
|
|
|
486 return port
|
|
54
|
487 def mouseMoveEvent(self, mouseEvent):
|
|
|
488 editor.sceneMouseMoveEvent(mouseEvent)
|
|
|
489 super(DiagramScene, self).mouseMoveEvent(mouseEvent)
|
|
|
490 def mouseReleaseEvent(self, mouseEvent):
|
|
|
491 editor.sceneMouseReleaseEvent(mouseEvent)
|
|
|
492 super(DiagramScene, self).mouseReleaseEvent(mouseEvent)
|
|
55
|
493 def vias(self, P1, P2):
|
|
|
494 """ Constructs a list of points that must be connected
|
|
|
495 to go from P1 to P2 """
|
|
|
496 def stripHits(hits):
|
|
|
497 """ Helper function that removes object hits """
|
|
|
498 hits = [hit for hit in hits if type(hit) is BlockItem]
|
|
|
499 return hits
|
|
|
500
|
|
|
501 def viaPoints(pA, pB):
|
|
|
502 # Construct intermediate points:
|
|
|
503
|
|
|
504 pAB1 = QPointF(pA.x(), pB.y())
|
|
|
505 pAB2 = QPointF(pB.x(), pA.y())
|
|
|
506 path1 = QPainterPath(pA)
|
|
|
507 path1.lineTo(pAB1)
|
|
|
508 path2 = QPainterPath(pA)
|
|
|
509 path2.lineTo(pAB2)
|
|
|
510 if len(stripHits(self.items(path1))) > len(stripHits(self.items(path2))):
|
|
|
511 pAB = pAB2
|
|
|
512 else:
|
|
|
513 pAB = pAB1
|
|
|
514 return [pAB]
|
|
|
515
|
|
|
516 # Determine left or right:
|
|
|
517 dx = QPointF(20, 0)
|
|
|
518 if len(stripHits(self.items(P1 + dx))) > len(stripHits(self.items(P1 - dx))):
|
|
|
519 p2 = P1 - dx
|
|
|
520 else:
|
|
|
521 p2 = P1 + dx
|
|
|
522
|
|
|
523 if len(stripHits(self.items(P2 + dx))) > len(stripHits(self.items(P2 - dx))):
|
|
|
524 p3 = P2 - dx
|
|
|
525 else:
|
|
|
526 p3 = P2 + dx
|
|
|
527
|
|
|
528 # If pathitem:
|
|
|
529 pts = [P1, p2] + viaPoints(p2, p3) + [p3, P2]
|
|
|
530 return pts
|
|
54
|
531 def deleteItem(self, item=None):
|
|
|
532 if item:
|
|
|
533 if type(item) is BlockItem:
|
|
|
534 for p in item.inputs + item.outputs:
|
|
|
535 if p.connection:
|
|
|
536 self.deleteItem(p.connection)
|
|
|
537 self.removeItem(item)
|
|
|
538 elif type(item) is Connection:
|
|
|
539 item.releasePorts()
|
|
|
540 self.removeItem(item)
|
|
|
541 else:
|
|
|
542 # No item was supplied, try to delete all currently selected items:
|
|
|
543 items = self.selectedItems()
|
|
|
544 connections = [item for item in items if type(item) is Connection]
|
|
|
545 blocks = [item for item in items if type(item) is BlockItem]
|
|
|
546 for item in connections + blocks:
|
|
|
547 self.deleteItem(item)
|
|
50
|
548
|
|
54
|
549 class DiagramEditor(QWidget):
|
|
|
550 def __init__(self, parent=None):
|
|
|
551 QWidget.__init__(self, parent)
|
|
|
552 self.setWindowTitle("Diagram editor")
|
|
|
553
|
|
|
554 # Widget layout and child widgets:
|
|
|
555 self.horizontalLayout = QHBoxLayout(self)
|
|
|
556 self.libraryBrowserView = QListView(self)
|
|
|
557 self.libraryBrowserView.setMaximumWidth(160)
|
|
|
558 self.libraryModel = LibraryModel(self)
|
|
|
559 self.libraryModel.setColumnCount(1)
|
|
|
560 # Create an icon with an icon:
|
|
|
561 pixmap = QPixmap(60, 60)
|
|
|
562 pixmap.fill()
|
|
|
563 painter = QPainter(pixmap)
|
|
|
564 painter.fillRect(10, 10, 40, 40, Qt.blue)
|
|
|
565 painter.setBrush(Qt.red)
|
|
|
566 painter.drawEllipse(36, 2, 20, 20)
|
|
|
567 painter.setBrush(Qt.yellow)
|
|
|
568 painter.drawEllipse(20, 20, 20, 20)
|
|
|
569 painter.end()
|
|
|
570
|
|
|
571 # Fill library:
|
|
|
572 self.libItems = []
|
|
|
573 self.libItems.append( QStandardItem(QIcon(pixmap), 'Block') )
|
|
|
574 self.libItems.append( QStandardItem(QIcon(pixmap), 'Uber Unit') )
|
|
|
575 self.libItems.append( QStandardItem(QIcon(pixmap), 'Device') )
|
|
|
576 for i in self.libItems:
|
|
|
577 self.libraryModel.appendRow(i)
|
|
|
578 self.libraryBrowserView.setModel(self.libraryModel)
|
|
|
579 self.libraryBrowserView.setViewMode(self.libraryBrowserView.IconMode)
|
|
|
580 self.libraryBrowserView.setDragDropMode(self.libraryBrowserView.DragOnly)
|
|
|
581
|
|
|
582 self.diagramScene = DiagramScene(self)
|
|
|
583 self.loadDiagram = self.diagramScene.loadDiagram
|
|
|
584 self.diagramView = EditorGraphicsView(self.diagramScene, self)
|
|
|
585 self.horizontalLayout.addWidget(self.libraryBrowserView)
|
|
|
586 self.horizontalLayout.addWidget(self.diagramView)
|
|
|
587
|
|
|
588 self.startedConnection = None
|
|
|
589 fullScreenShortcut = QShortcut(QKeySequence("F11"), self)
|
|
|
590 fullScreenShortcut.activated.connect(self.toggleFullScreen)
|
|
|
591 saveShortcut = QShortcut(QKeySequence(QKeySequence.Save), self)
|
|
|
592 saveShortcut.activated.connect(self.save)
|
|
|
593 testShortcut = QShortcut(QKeySequence("F12"), self)
|
|
|
594 testShortcut.activated.connect(self.test)
|
|
|
595 zoomShortcut = QShortcut(QKeySequence("F8"), self)
|
|
|
596 zoomShortcut.activated.connect(self.zoomAll)
|
|
|
597 delShort = QShortcut(QKeySequence.Delete, self)
|
|
|
598 delShort.activated.connect(self.diagramScene.deleteItem)
|
|
|
599
|
|
|
600 def test(self):
|
|
|
601 self.diagramView.rotate(30)
|
|
|
602 self.zoomAll()
|
|
|
603 def save(self):
|
|
|
604 self.diagramScene.saveDiagram('diagram2.usd')
|
|
44
|
605 def toggleFullScreen(self):
|
|
|
606 self.setWindowState(self.windowState() ^ Qt.WindowFullScreen)
|
|
|
607 def startConnection(self, port):
|
|
|
608 self.startedConnection = Connection(port, None)
|
|
55
|
609 pos = port.scenePos()
|
|
|
610 self.startedConnection.setEndPos(pos)
|
|
50
|
611 self.diagramScene.addItem(self.startedConnection)
|
|
48
|
612 def zoomAll(self):
|
|
|
613 """ zoom to fit all items """
|
|
|
614 rect = self.diagramScene.itemsBoundingRect()
|
|
|
615 self.diagramView.fitInView(rect, Qt.KeepAspectRatio)
|
|
44
|
616 def sceneMouseMoveEvent(self, event):
|
|
|
617 if self.startedConnection:
|
|
|
618 pos = event.scenePos()
|
|
|
619 self.startedConnection.setEndPos(pos)
|
|
|
620 def sceneMouseReleaseEvent(self, event):
|
|
|
621 # Clear the actual connection:
|
|
|
622 if self.startedConnection:
|
|
46
|
623 items = self.diagramScene.items(event.scenePos())
|
|
44
|
624 for item in items:
|
|
|
625 if type(item) is PortItem:
|
|
|
626 self.startedConnection.setToPort(item)
|
|
46
|
627 self.startedConnection = None
|
|
|
628 return
|
|
54
|
629 self.diagramScene.deleteItem(self.startedConnection)
|
|
44
|
630 self.startedConnection = None
|
|
|
631
|
|
|
632 if __name__ == '__main__':
|
|
45
|
633 if sys.version_info.major != 3:
|
|
|
634 print('Please use python 3.x')
|
|
|
635 sys.exit(1)
|
|
|
636
|
|
46
|
637 app = QApplication(sys.argv)
|
|
44
|
638 global editor
|
|
|
639 editor = DiagramEditor()
|
|
50
|
640 editor.loadDiagram('diagram2.usd')
|
|
44
|
641 editor.show()
|
|
48
|
642 editor.resize(700, 500)
|
|
50
|
643 editor.zoomAll()
|
|
44
|
644 app.exec_()
|
|
|
645
|
