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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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60
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7 import xml
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44
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8
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56
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9 """
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10 Author: Windel Bouwman
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11 Year: 2012
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12 Description: This script implements a diagram editor.
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13 run with python 3.x as:
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14 $ python [thisfile.py]
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44
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15 """
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16
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55
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17 class ArrowHead(QGraphicsPathItem):
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18 def __init__(self, parent):
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19 super(ArrowHead, self).__init__(parent)
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20 arrowPath = QPainterPath(QPointF(0.0, 0.0))
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21 arrowPath.lineTo(-6.0, 10.0)
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22 arrowPath.lineTo(6.0, 10.0)
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23 arrowPath.lineTo(0.0, 0.0)
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24 self.setPath(arrowPath)
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25 pen = QPen(Qt.blue, 2)
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26 self.setPen(pen)
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27 self.setBrush(QBrush(pen.color()))
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28 self.myshape = QPainterPath()
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29
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49
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30 class Connection(QGraphicsPathItem):
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53
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31 """ Implementation of a connection between blocks """
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32 def __init__(self, fromPort, toPort):
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49
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33 super(Connection, self).__init__()
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34 self.pos1 = None
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35 self.pos2 = None
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53
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36 self.fromPort = None
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37 self.toPort = None
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55
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38 self.setFlag(self.ItemIsSelectable, True)
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39 self.setFlag(self.ItemClipsToShape, True)
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40 self.pen = QPen(Qt.blue, 2)
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41 self.pen.setCapStyle(Qt.RoundCap)
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42 self.setPen(self.pen)
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43 self.arrowhead = ArrowHead(self)
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58
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44 self.vias = []
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44
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45 self.setFromPort(fromPort)
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46
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46 self.setToPort(toPort)
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58
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47 def mouseDoubleClickEvent(self, event):
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48 pos = event.scenePos()
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60
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49 pts = [self.pos1] + [v.pos() for v in self.vias] + [self.pos2]
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50 idx = 0
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51 tidx = 0
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52 for p1, p2 in zip(pts[0:-1], pts[1:]):
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53 l1 = QLineF(p1, p2)
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54 l2 = QLineF(p1, pos)
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55 l3 = QLineF(pos, p2)
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56 d = l2.length() + l3.length() - l1.length()
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57 if d < 5:
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58 tidx = idx
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59 idx += 1
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60 self.addHandle(pos, tidx)
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61
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62 def addHandle(self, pos, idx=None):
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63 hi = HandleItem(self)
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64 if idx:
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65 self.vias.insert(idx, hi)
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66 else:
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60
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67 self.vias.append(hi)
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68 def callback(p):
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69 self.updateLineStukken()
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60
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70 return p
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71 hi.posChangeCallbacks.append(callback)
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72 hi.setPos(pos)
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73 self.updateLineStukken()
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74
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75 def setFromPort(self, fromPort):
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76 if self.fromPort:
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77 self.fromPort.posCallbacks.remove(self.setBeginPos)
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78 self.fromPort.connection = None
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79 self.fromPort = fromPort
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80 if self.fromPort:
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81 self.fromPort.connection = self
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82 self.setBeginPos(fromPort.scenePos())
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83 self.fromPort.posCallbacks.append(self.setBeginPos)
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84 def setToPort(self, toPort):
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85 if self.toPort:
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86 self.toPort.posCallbacks.remove(self.setEndPos)
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87 self.toPort.connection = None
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88 self.toPort = toPort
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89 if self.toPort:
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90 self.setEndPos(toPort.scenePos())
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91 self.toPort.connection = self
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92 self.toPort.posCallbacks.append(self.setEndPos)
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53
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93 def releasePorts(self):
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94 self.setFromPort(None)
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95 self.setToPort(None)
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96 def setBeginPos(self, pos1):
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97 self.pos1 = pos1
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98 self.updateLineStukken()
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99 def setEndPos(self, endpos):
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100 self.pos2 = endpos
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101 self.updateLineStukken()
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102 def itemChange(self, change, value):
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103 if change == self.ItemSelectedHasChanged:
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60
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104 for via in self.vias:
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105 via.setVisible(value)
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106 return super(Connection, self).itemChange(change, value)
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56
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107 def shape(self):
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108 return self.myshape
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109 def updateLineStukken(self):
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110 """
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111 This algorithm determines the optimal routing of all signals.
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112 TODO: implement nice automatic line router
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113 """
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114 if self.pos1 is None or self.pos2 is None:
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115 return
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116 pts = [self.pos1] + [v.pos() for v in self.vias] + [self.pos2]
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117 self.arrowhead.setPos(self.pos2)
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118 if pts[-1].x() < pts[-2].x():
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119 self.arrowhead.setRotation(-90)
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120 else:
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121 self.arrowhead.setRotation(90)
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122 path = QPainterPath(pts[0])
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123 for pt in pts[1:]:
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124 path.lineTo(pt)
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125 self.setPath(path)
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126 """ Create a shape outline using the path stroker """
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127 s = super(Connection, self).shape()
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128 pps = QPainterPathStroker()
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129 pps.setWidth(10)
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130 self.myshape = pps.createStroke(s).simplified()
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131
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132 class ParameterDialog(QDialog):
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133 def __init__(self, block, parent = None):
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134 super(ParameterDialog, self).__init__(parent)
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135 self.block = block
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136 self.button = QPushButton('Ok', self)
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137 l = QGridLayout(self)
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138 l.addWidget(QLabel('Name:', self), 0, 0)
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51
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139 self.nameEdit = QLineEdit(self.block.name)
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140 l.addWidget(self.nameEdit, 0, 1)
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141 l.addWidget(QLabel('Code:', self), 1, 0)
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142 self.codeEdit = QTextEdit(self)
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143 self.codeEdit.setPlainText(self.block.code)
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144 l.addWidget(self.codeEdit, 1, 1)
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145 l.addWidget(self.button, 2, 0, 1, 2)
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146 self.button.clicked.connect(self.OK)
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147 def OK(self):
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148 self.block.setName(self.nameEdit.text())
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149 self.block.code = self.codeEdit.toPlainText()
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150 self.close()
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151
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53
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152 class PortItem(QGraphicsPathItem):
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153 """ Represents a port to a subsystem """
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154 def __init__(self, name, block, direction):
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155 super(PortItem, self).__init__(block)
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156 self.connection = None
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157 path = QPainterPath()
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158 d = 10.0
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159 if direction == 'input':
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160 path.moveTo(-d, -d)
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161 path.lineTo(0.0, 0.0)
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162 path.lineTo(-d, d)
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163 else:
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164 path.moveTo(0.0, -d)
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165 path.lineTo(d, 0.0)
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166 path.lineTo(0.0, d)
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167 self.setPath(path)
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168 self.direction = direction
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169 self.block = block
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170 self.setCursor(QCursor(Qt.CrossCursor))
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171 pen = QPen(Qt.blue, 2)
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172 pen.setCapStyle(Qt.RoundCap)
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173 self.setPen(pen)
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174 self.name = name
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175 self.textItem = QGraphicsTextItem(name, self)
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176 self.setName(name)
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177 self.posCallbacks = []
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178 self.setFlag(self.ItemSendsScenePositionChanges, True)
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179 def setName(self, name):
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180 self.name = name
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181 self.textItem.setPlainText(name)
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182 rect = self.textItem.boundingRect()
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183 lw, lh = rect.width(), rect.height()
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184 if self.direction == 'input':
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185 lx = 3
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186 else:
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187 lx = -3 - lw
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188 self.textItem.setPos(lx, -lh / 2)
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189 def itemChange(self, change, value):
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190 if change == self.ItemScenePositionHasChanged:
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191 for cb in self.posCallbacks:
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192 cb(value)
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193 return value
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194 return super(PortItem, self).itemChange(change, value)
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195 def mousePressEvent(self, event):
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196 if self.direction == 'output':
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197 self.scene().startConnection(self)
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198
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199 class OutputPort(PortItem):
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200 # TODO: create a subclass OR make a member porttype
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201 pass
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202
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44
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203 # Block part:
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204 class HandleItem(QGraphicsEllipseItem):
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205 """ A handle that can be moved by the mouse """
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206 def __init__(self, parent=None):
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207 dx = 13.0
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208 super(HandleItem, self).__init__(QRectF(-0.5*dx,-0.5*dx,dx,dx), parent)
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209 self.posChangeCallbacks = []
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210 self.setBrush(QBrush(Qt.white))
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211 self.setFlag(self.ItemSendsScenePositionChanges, True)
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212 self.setFlag(self.ItemIsMovable, True)
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213 self.setVisible(False)
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214 self.setCursor(QCursor(Qt.SizeFDiagCursor))
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215 def mouseMoveEvent(self, event):
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216 """ Move function without moving the other selected elements """
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217 p = self.mapToParent(event.pos())
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218 self.setPos(p)
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219 def mySetPos(self, p):
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220 # TODO: use this instead of itemChange?
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221 self.setPos(p)
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222 def itemChange(self, change, value):
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223 if change == self.ItemPositionChange:
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224 for cb in self.posChangeCallbacks:
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225 res = cb(value)
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226 if res:
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227 value = res
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228 return value
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229 # Call superclass method:
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230 return super(HandleItem, self).itemChange(change, value)
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231
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232 def uniqify(name, names):
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233 newname = name
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234 i = 1
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235 while newname in names:
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236 newname = name + str(i)
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237 i += 1
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238 return newname
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239
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240 class BlockItem(QGraphicsRectItem):
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241 """
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242 Represents a block in the diagram
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243 Has an x and y and width and height
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244 width and height can only be adjusted with a tip in the lower right corner.
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245
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246 - in and output ports
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247 - parameters
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248 - description
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249 """
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250 def __init__(self, name='Untitled', parent=None):
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251 super(BlockItem, self).__init__(parent)
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252 # Properties of the rectangle:
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253 self.setPen(QPen(Qt.blue, 2))
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254 self.setBrush(QBrush(Qt.lightGray))
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255 self.setFlags(self.ItemIsSelectable | self.ItemIsMovable)
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256 self.setFlag(self.ItemSendsScenePositionChanges, True)
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257 self.setCursor(QCursor(Qt.PointingHandCursor))
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258 self.label = QGraphicsTextItem(name, self)
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259 self.name = name
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260 self.code = ''
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44
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261 # Create corner for resize:
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262 self.sizer = HandleItem(self)
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263 self.sizer.posChangeCallbacks.append(self.changeSize) # Connect the callback
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264 button = QPushButton('+in')
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265 button.clicked.connect(self.newInputPort)
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266 self.buttonItemAddInput = QGraphicsProxyWidget(self)
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267 self.buttonItemAddInput.setWidget(button)
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268 self.buttonItemAddInput.setVisible(False)
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269 button = QPushButton('+out')
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270 button.clicked.connect(self.newOutputPort)
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271 self.buttonItemAddOutput = QGraphicsProxyWidget(self)
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272 self.buttonItemAddOutput.setWidget(button)
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273 self.buttonItemAddOutput.setVisible(False)
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274
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275 # Inputs and outputs of the block:
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276 self.inputs = []
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277 self.outputs = []
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278 # Update size:
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279 self.sizer.mySetPos(QPointF(60, 40)) # This is a better resize function
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280 def editParameters(self):
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281 pd = ParameterDialog(self, self.window())
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282 pd.exec_()
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59
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283 def mouseDoubleClickEvent(self, event):
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284 self.editParameters()
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58
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285 def newInputPort(self):
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286 names = [i.name for i in self.inputs + self.outputs]
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287 self.addInput(PortItem(uniqify('in', names), self, 'input'))
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288 def newOutputPort(self):
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289 names = [i.name for i in self.inputs + self.outputs]
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290 self.addOutput(PortItem(uniqify('out', names), self, 'output'))
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291 def setName(self, name):
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292 self.name = name
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293 self.label.setPlainText(name)
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294 def addInput(self, i):
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295 self.inputs.append(i)
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296 self.updateSize()
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297 def addOutput(self, o):
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298 self.outputs.append(o)
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299 self.updateSize()
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300
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301 def contextMenuEvent(self, event):
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302 menu = QMenu()
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303 pa = menu.addAction('Parameters')
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304 pa.triggered.connect(self.editParameters)
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305 menu.exec_(event.screenPos())
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306 def itemChange(self, change, value):
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307 if change == self.ItemSelectedHasChanged:
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308 self.sizer.setVisible(value)
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309 self.buttonItemAddInput.setVisible(value)
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310 self.buttonItemAddOutput.setVisible(value)
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311 return super(BlockItem, self).itemChange(change, value)
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312
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49
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313 def updateSize(self):
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314 rect = self.rect()
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315 h, w = rect.height(), rect.width()
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316 self.buttonItemAddInput.setPos(0, h + 4)
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317 self.buttonItemAddOutput.setPos(w+10, h+4)
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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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44
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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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44
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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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49
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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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58
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374 pos = self.mapToScene(event.pos())
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375 self.scene().addNewBlock(pos, name)
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44
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376
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377 class LibraryModel(QStandardItemModel):
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378 def __init__(self, parent=None):
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379 QStandardItemModel.__init__(self, parent)
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380 def mimeTypes(self):
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381 return ['component/name']
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382 def mimeData(self, idxs):
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383 mimedata = QMimeData()
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384 for idx in idxs:
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385 if idx.isValid():
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45
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386 txt = self.data(idx, Qt.DisplayRole) # python 3
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44
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387 mimedata.setData('component/name', txt)
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388 return mimedata
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389
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|
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390 class DiagramScene(QGraphicsScene):
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54
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391 """ Save and load and deletion of item"""
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44
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392 def __init__(self, parent=None):
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393 super(DiagramScene, self).__init__(parent)
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56
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394 self.startedConnection = None
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55
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395
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46
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396 def saveDiagram(self, filename):
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54
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397 items = self.items()
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46
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398 blocks = [item for item in items if type(item) is BlockItem]
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49
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399 connections = [item for item in items if type(item) is Connection]
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47
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400
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401 doc = md.Document()
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402 modelElement = doc.createElement('system')
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403 doc.appendChild(modelElement)
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404 for block in blocks:
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405 blockElement = doc.createElement("block")
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406 x, y = block.scenePos().x(), block.scenePos().y()
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407 rect = block.rect()
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408 w, h = rect.width(), rect.height()
|
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50
|
409 blockElement.setAttribute("name", block.name)
|
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49
|
410 blockElement.setAttribute("x", str(int(x)))
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|
|
411 blockElement.setAttribute("y", str(int(y)))
|
|
|
412 blockElement.setAttribute("width", str(int(w)))
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|
413 blockElement.setAttribute("height", str(int(h)))
|
|
60
|
414 codeNode = doc.createCDATASection(block.code)
|
|
|
415 codeElement = doc.createElement('code')
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416 codeElement.appendChild(codeNode)
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|
|
417 blockElement.appendChild(codeElement)
|
|
48
|
418 for inp in block.inputs:
|
|
|
419 portElement = doc.createElement("input")
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|
|
420 portElement.setAttribute("name", inp.name)
|
|
|
421 blockElement.appendChild(portElement)
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|
|
422 for outp in block.outputs:
|
|
|
423 portElement = doc.createElement("output")
|
|
|
424 portElement.setAttribute("name", outp.name)
|
|
|
425 blockElement.appendChild(portElement)
|
|
47
|
426 modelElement.appendChild(blockElement)
|
|
49
|
427 for connection in connections:
|
|
|
428 connectionElement = doc.createElement("connection")
|
|
|
429 fromPort = connection.fromPort.name
|
|
|
430 toPort = connection.toPort.name
|
|
50
|
431 fromBlock = connection.fromPort.block.name
|
|
|
432 toBlock = connection.toPort.block.name
|
|
49
|
433 connectionElement.setAttribute("fromBlock", fromBlock)
|
|
|
434 connectionElement.setAttribute("fromPort", fromPort)
|
|
|
435 connectionElement.setAttribute("toBlock", toBlock)
|
|
|
436 connectionElement.setAttribute("toPort", toPort)
|
|
60
|
437 for via in connection.vias:
|
|
|
438 viaElement = doc.createElement('via')
|
|
|
439 viaElement.setAttribute('x', str(int(via.x())))
|
|
|
440 viaElement.setAttribute('y', str(int(via.y())))
|
|
|
441 connectionElement.appendChild(viaElement)
|
|
49
|
442 modelElement.appendChild(connectionElement)
|
|
46
|
443 with open(filename, 'w') as f:
|
|
47
|
444 f.write(doc.toprettyxml())
|
|
46
|
445
|
|
|
446 def loadDiagram(self, filename):
|
|
|
447 try:
|
|
47
|
448 doc = md.parse(filename)
|
|
46
|
449 except IOError as e:
|
|
|
450 print('{0} not found'.format(filename))
|
|
|
451 return
|
|
60
|
452 except xml.parsers.expat.ExpatError as e:
|
|
|
453 print('{0}'.format(e))
|
|
|
454 return
|
|
47
|
455 sysElements = doc.getElementsByTagName('system')
|
|
|
456 blockElements = doc.getElementsByTagName('block')
|
|
|
457 for sysElement in sysElements:
|
|
|
458 blockElements = sysElement.getElementsByTagName('block')
|
|
|
459 for blockElement in blockElements:
|
|
|
460 x = float(blockElement.getAttribute('x'))
|
|
|
461 y = float(blockElement.getAttribute('y'))
|
|
|
462 w = float(blockElement.getAttribute('width'))
|
|
|
463 h = float(blockElement.getAttribute('height'))
|
|
|
464 name = blockElement.getAttribute('name')
|
|
|
465 block = BlockItem(name)
|
|
54
|
466 self.addItem(block)
|
|
46
|
467 block.setPos(x, y)
|
|
|
468 block.sizer.setPos(w, h)
|
|
60
|
469 codeElements = blockElement.getElementsByTagName('code')
|
|
|
470 if codeElements:
|
|
|
471 cn = codeElements[0].childNodes
|
|
|
472 cdatas = [cd for cd in cn if type(cd) is md.CDATASection]
|
|
|
473 if len(cdatas) > 0:
|
|
|
474 block.code = cdatas[0].data
|
|
48
|
475 # Load ports:
|
|
49
|
476 portElements = blockElement.getElementsByTagName('input')
|
|
48
|
477 for portElement in portElements:
|
|
49
|
478 name = portElement.getAttribute('name')
|
|
53
|
479 inp = PortItem(name, block, 'input')
|
|
49
|
480 block.addInput(inp)
|
|
|
481 portElements = blockElement.getElementsByTagName('output')
|
|
|
482 for portElement in portElements:
|
|
|
483 name = portElement.getAttribute('name')
|
|
53
|
484 outp = PortItem(name, block, 'output')
|
|
49
|
485 block.addOutput(outp)
|
|
48
|
486 connectionElements = sysElement.getElementsByTagName('connection')
|
|
|
487 for connectionElement in connectionElements:
|
|
50
|
488 fromBlock = connectionElement.getAttribute('fromBlock')
|
|
|
489 fromPort = connectionElement.getAttribute('fromPort')
|
|
|
490 toBlock = connectionElement.getAttribute('toBlock')
|
|
|
491 toPort = connectionElement.getAttribute('toPort')
|
|
60
|
492 viaElements = connectionElement.getElementsByTagName('via')
|
|
50
|
493 fromPort = self.findPort(fromBlock, fromPort)
|
|
|
494 toPort = self.findPort(toBlock, toPort)
|
|
|
495 connection = Connection(fromPort, toPort)
|
|
60
|
496 for viaElement in viaElements:
|
|
|
497 x = int(viaElement.getAttribute('x'))
|
|
|
498 y = int(viaElement.getAttribute('y'))
|
|
|
499 connection.addHandle(QPointF(x, y))
|
|
54
|
500 self.addItem(connection)
|
|
50
|
501 def findPort(self, blockname, portname):
|
|
54
|
502 items = self.items()
|
|
50
|
503 blocks = [item for item in items if type(item) is BlockItem]
|
|
|
504 for block in [b for b in blocks if b.name == blockname]:
|
|
|
505 for port in block.inputs + block.outputs:
|
|
|
506 if port.name == portname:
|
|
|
507 return port
|
|
58
|
508 def addNewBlock(self, pos, name):
|
|
|
509 blocknames = [item.name for item in self.items() if type(item) is BlockItem]
|
|
|
510 b1 = BlockItem(uniqify(name, blocknames))
|
|
|
511 b1.setPos(pos)
|
|
|
512 self.addItem(b1)
|
|
56
|
513 def mouseMoveEvent(self, event):
|
|
|
514 if self.startedConnection:
|
|
|
515 pos = event.scenePos()
|
|
|
516 self.startedConnection.setEndPos(pos)
|
|
|
517 super(DiagramScene, self).mouseMoveEvent(event)
|
|
|
518 def mouseReleaseEvent(self, event):
|
|
|
519 if self.startedConnection:
|
|
|
520 items = self.items(event.scenePos())
|
|
|
521 for item in items:
|
|
|
522 if type(item) is PortItem:
|
|
|
523 self.startedConnection.setToPort(item)
|
|
|
524 self.startedConnection = None
|
|
|
525 return
|
|
|
526 self.deleteItem(self.startedConnection)
|
|
|
527 self.startedConnection = None
|
|
|
528 super(DiagramScene, self).mouseReleaseEvent(event)
|
|
|
529 def startConnection(self, port):
|
|
|
530 self.startedConnection = Connection(port, None)
|
|
|
531 pos = port.scenePos()
|
|
|
532 self.startedConnection.setEndPos(pos)
|
|
|
533 self.addItem(self.startedConnection)
|
|
54
|
534 def deleteItem(self, item=None):
|
|
|
535 if item:
|
|
|
536 if type(item) is BlockItem:
|
|
|
537 for p in item.inputs + item.outputs:
|
|
|
538 if p.connection:
|
|
|
539 self.deleteItem(p.connection)
|
|
|
540 self.removeItem(item)
|
|
|
541 elif type(item) is Connection:
|
|
|
542 item.releasePorts()
|
|
|
543 self.removeItem(item)
|
|
|
544 else:
|
|
|
545 # No item was supplied, try to delete all currently selected items:
|
|
|
546 items = self.selectedItems()
|
|
|
547 connections = [item for item in items if type(item) is Connection]
|
|
|
548 blocks = [item for item in items if type(item) is BlockItem]
|
|
|
549 for item in connections + blocks:
|
|
|
550 self.deleteItem(item)
|
|
50
|
551
|
|
54
|
552 class DiagramEditor(QWidget):
|
|
|
553 def __init__(self, parent=None):
|
|
|
554 QWidget.__init__(self, parent)
|
|
|
555
|
|
|
556 # Widget layout and child widgets:
|
|
|
557 self.horizontalLayout = QHBoxLayout(self)
|
|
61
|
558 self.diagramScene = DiagramScene(self)
|
|
|
559 self.loadDiagram = self.diagramScene.loadDiagram
|
|
|
560 self.diagramView = EditorGraphicsView(self.diagramScene, self)
|
|
|
561 self.horizontalLayout.addWidget(self.diagramView)
|
|
|
562
|
|
|
563 testShortcut = QShortcut(QKeySequence("F12"), self)
|
|
|
564 testShortcut.activated.connect(self.test)
|
|
|
565 delShort = QShortcut(QKeySequence.Delete, self)
|
|
|
566 delShort.activated.connect(self.diagramScene.deleteItem)
|
|
|
567
|
|
|
568 def test(self):
|
|
|
569 self.diagramView.rotate(30)
|
|
|
570 self.zoomAll()
|
|
|
571 def save(self):
|
|
|
572 self.diagramScene.saveDiagram('diagram2.usd')
|
|
|
573 def load(self):
|
|
|
574 filename = QFileDialog.getOpenFileName(self)
|
|
|
575 self.diagramScene.loadDiagram(filename)
|
|
|
576 def zoomAll(self):
|
|
|
577 """ zoom to fit all items """
|
|
|
578 rect = self.diagramScene.itemsBoundingRect()
|
|
|
579 self.diagramView.fitInView(rect, Qt.KeepAspectRatio)
|
|
|
580
|
|
|
581 class LibraryWidget(QListView):
|
|
|
582 def __init__(self):
|
|
|
583 super(LibraryWidget, self).__init__(None)
|
|
54
|
584 self.libraryModel = LibraryModel(self)
|
|
|
585 self.libraryModel.setColumnCount(1)
|
|
|
586 # Create an icon with an icon:
|
|
|
587 pixmap = QPixmap(60, 60)
|
|
|
588 pixmap.fill()
|
|
|
589 painter = QPainter(pixmap)
|
|
|
590 painter.fillRect(10, 10, 40, 40, Qt.blue)
|
|
|
591 painter.setBrush(Qt.yellow)
|
|
|
592 painter.drawEllipse(20, 20, 20, 20)
|
|
|
593 painter.end()
|
|
|
594
|
|
|
595 # Fill library:
|
|
|
596 self.libItems = []
|
|
|
597 self.libItems.append( QStandardItem(QIcon(pixmap), 'Block') )
|
|
|
598 self.libItems.append( QStandardItem(QIcon(pixmap), 'Uber Unit') )
|
|
|
599 self.libItems.append( QStandardItem(QIcon(pixmap), 'Device') )
|
|
|
600 for i in self.libItems:
|
|
|
601 self.libraryModel.appendRow(i)
|
|
61
|
602 self.setModel(self.libraryModel)
|
|
|
603 self.setViewMode(self.IconMode)
|
|
|
604 self.setDragDropMode(self.DragOnly)
|
|
54
|
605
|
|
61
|
606 class Main(QMainWindow):
|
|
|
607 def __init__(self):
|
|
|
608 super(Main, self).__init__(None)
|
|
|
609 self.editor = DiagramEditor()
|
|
|
610 self.setCentralWidget(self.editor)
|
|
|
611 self.setWindowTitle("Diagram editor")
|
|
|
612 toolbar = self.addToolBar('Tools')
|
|
54
|
613
|
|
61
|
614 saveAction = QAction('Save', self)
|
|
|
615 saveAction.setShortcuts(QKeySequence.Save)
|
|
|
616 saveAction.triggered.connect(self.editor.save)
|
|
|
617 toolbar.addAction(saveAction)
|
|
|
618 openAction = QAction('Open', self)
|
|
|
619 openAction.setShortcuts(QKeySequence.Open)
|
|
|
620 openAction.triggered.connect(self.editor.load)
|
|
|
621 toolbar.addAction(openAction)
|
|
|
622 fullScreenAction = QAction('Full screen', self)
|
|
|
623 fullScreenAction.setShortcuts(QKeySequence("F11"))
|
|
|
624 fullScreenAction.triggered.connect(self.toggleFullScreen)
|
|
|
625 toolbar.addAction(fullScreenAction)
|
|
|
626 zoomAction = QAction('Fit in view', self)
|
|
|
627 zoomAction.setShortcuts(QKeySequence('F8'))
|
|
|
628 zoomAction.triggered.connect(self.editor.zoomAll)
|
|
|
629 toolbar.addAction(zoomAction)
|
|
54
|
630
|
|
61
|
631 self.library = LibraryWidget()
|
|
|
632 libraryDock = QDockWidget('Library', self)
|
|
|
633 libraryDock.setWidget(self.library)
|
|
|
634 self.addDockWidget(Qt.LeftDockWidgetArea, libraryDock)
|
|
|
635
|
|
|
636 self.editor.loadDiagram('diagram2.usd')
|
|
|
637
|
|
44
|
638 def toggleFullScreen(self):
|
|
|
639 self.setWindowState(self.windowState() ^ Qt.WindowFullScreen)
|
|
61
|
640 self.editor.zoomAll()
|
|
44
|
641
|
|
|
642 if __name__ == '__main__':
|
|
45
|
643 if sys.version_info.major != 3:
|
|
|
644 print('Please use python 3.x')
|
|
|
645 sys.exit(1)
|
|
|
646
|
|
46
|
647 app = QApplication(sys.argv)
|
|
61
|
648 main = Main()
|
|
|
649 main.show()
|
|
|
650 main.resize(700, 500)
|
|
|
651 main.editor.zoomAll()
|
|
44
|
652 app.exec_()
|
|
|
653
|
