Graphics/PackageItem.py

Wed, 12 Sep 2012 19:41:50 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Wed, 12 Sep 2012 19:41:50 +0200
changeset 2039
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parent 2034
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child 2302
f29e9405c851
permissions
-rw-r--r--

Added the capability to rebuild a diagram without losing the current item positions.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2007 - 2012 Detlev Offenbach <detlev@die-offenbachs.de>
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4 #
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5
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6 """
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7 Module implementing a package item.
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8 """
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9
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10 from PyQt4.QtGui import QFont, QGraphicsSimpleTextItem, QStyle
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11
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12 from .UMLItem import UMLModel, UMLItem
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13
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14 import Utilities
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15
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16
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17 class PackageModel(UMLModel):
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18 """
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19 Class implementing the package model.
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20 """
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21 def __init__(self, name, moduleslist=[]):
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22 """
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23 Constructor
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24
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25 @param name package name (string)
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26 @param moduleslist list of module names (list of strings)
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27 """
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28 super().__init__(name)
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29
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30 self.moduleslist = moduleslist
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31
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32 def addModule(self, modulename):
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33 """
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34 Method to add a module to the package model.
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35
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36 @param modulename module name to be added (string)
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37 """
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38 self.moduleslist.append(modulename)
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39
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40 def getModules(self):
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41 """
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42 Method to retrieve the modules of the package.
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43
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44 @return list of module names (list of strings)
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45 """
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46 return self.moduleslist[:]
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47
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48
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49 class PackageItem(UMLItem):
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50 """
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51 Class implementing a package item.
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52 """
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53 ItemType = "package"
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54
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55 def __init__(self, model=None, x=0, y=0, rounded=False,
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56 noModules=False, parent=None, scene=None):
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57 """
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58 Constructor
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59
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60 @param model package model containing the package data (PackageModel)
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61 @param x x-coordinate (integer)
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62 @param y y-coordinate (integer)
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63 @param rounded flag indicating a rounded corner (boolean)
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64 @keyparam noModules flag indicating, that no module names should be
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65 shown (boolean)
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66 @keyparam parent reference to the parent object (QGraphicsItem)
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67 @keyparam scene reference to the scene object (QGraphicsScene)
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68 """
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69 UMLItem.__init__(self, model, x, y, rounded, parent)
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70 self.noModules = noModules
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71
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72 scene.addItem(self)
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73
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74 if self.model:
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75 self.__createTexts()
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76 self.__calculateSize()
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77
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78 def __createTexts(self):
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79 """
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80 Private method to create the text items of the class item.
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81 """
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82 if self.model is None:
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83 return
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84
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85 boldFont = QFont(self.font)
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86 boldFont.setBold(True)
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87
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88 modules = self.model.getModules()
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89
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90 x = self.margin + self.rect().x()
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91 y = self.margin + self.rect().y()
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92 self.header = QGraphicsSimpleTextItem(self)
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93 self.header.setFont(boldFont)
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94 self.header.setText(self.model.getName())
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95 self.header.setPos(x, y)
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96 y += self.header.boundingRect().height() + self.margin
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97
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98 if not self.noModules:
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99 if modules:
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100 txt = "\n".join(modules)
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101 else:
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102 txt = " "
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103 self.modules = QGraphicsSimpleTextItem(self)
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104 self.modules.setFont(self.font)
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105 self.modules.setText(txt)
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106 self.modules.setPos(x, y)
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107 else:
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108 self.modules = None
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109
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110 def __calculateSize(self):
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111 """
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112 Method to calculate the size of the package widget.
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113 """
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114 if self.model is None:
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115 return
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116
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117 width = self.header.boundingRect().width()
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118 height = self.header.boundingRect().height()
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119 if self.modules:
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120 width = max(width, self.modules.boundingRect().width())
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121 height = height + self.modules.boundingRect().height()
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122 latchW = width / 3.0
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123 latchH = min(15.0, latchW)
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124 self.setSize(width + 2 * self.margin, height + latchH + 2 * self.margin)
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125
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126 x = self.margin + self.rect().x()
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127 y = self.margin + self.rect().y() + latchH
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128 self.header.setPos(x, y)
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129 y += self.header.boundingRect().height() + self.margin
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130 if self.modules:
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131 self.modules.setPos(x, y)
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parents:
diff changeset
132
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parents:
diff changeset
133 def setModel(self, model):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
134 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
135 Method to set the package model.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
136
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parents:
diff changeset
137 @param model package model containing the package data (PackageModel)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
138 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
139 self.scene().removeItem(self.header)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
140 self.header = None
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
141 if self.modules:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
142 self.scene().removeItem(self.modules)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
143 self.modules = None
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
144 self.model = model
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
145 self.__createTexts()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
146 self.__calculateSize()
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parents:
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147
945
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parents: 791
diff changeset
148 def paint(self, painter, option, widget=None):
0
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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149 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
150 Public method to paint the item in local coordinates.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
151
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parents:
diff changeset
152 @param painter reference to the painter object (QPainter)
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parents:
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153 @param option style options (QStyleOptionGraphicsItem)
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parents:
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154 @param widget optional reference to the widget painted on (QWidget)
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parents:
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155 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
156 pen = self.pen()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
157 if (option.state & QStyle.State_Selected) == QStyle.State(QStyle.State_Selected):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
158 pen.setWidth(2)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
159 else:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
160 pen.setWidth(1)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
161
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
162 offsetX = self.rect().x()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
163 offsetY = self.rect().y()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
164 w = self.rect().width()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
165 latchW = w / 3.0
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
166 latchH = min(15.0, latchW)
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parents:
diff changeset
167 h = self.rect().height() - latchH + 1
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parents:
diff changeset
168
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
169 painter.setPen(pen)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
170 painter.setBrush(self.brush())
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
171 painter.setFont(self.font)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
172
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
173 painter.drawRect(offsetX, offsetY, latchW, latchH)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
174 painter.drawRect(offsetX, offsetY + latchH, w, h)
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parents:
diff changeset
175 y = self.margin + self.header.boundingRect().height() + latchH
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
176 painter.drawLine(offsetX, offsetY + y, offsetX + w - 1, offsetY + y)
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parents:
diff changeset
177
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
178 self.adjustAssociations()
2030
db11a2fe9bbc Implemented functions to save the UML graphics to disc.
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parents: 1509
diff changeset
179
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
180 def buildItemDataString(self):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
181 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
182 Public method to build a string to persist the specific item data.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
183
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
184 This string must start with ", " and should be built like
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
185 "attribute=value" with pairs separated by ", ". value must not contain ", "
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
186 or newlines.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
187
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
188 @return persistence data (string)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
189 """
db11a2fe9bbc Implemented functions to save the UML graphics to disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
190 entries = [
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
191 "no_modules={0}".format(self.noModules),
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
192 "name={0}".format(self.model.getName()),
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
193 ]
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
194 modules = self.model.getModules()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
195 if modules:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
196 entries.append("modules={0}".format("||".join(modules)))
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
197
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
198 return ", " + ", ".join(entries)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
199
2034
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
200 def parseItemDataString(self, version, data):
2030
db11a2fe9bbc Implemented functions to save the UML graphics to disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
201 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
202 Public method to parse the given persistence data.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
203
2034
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
204 @param version version of the data (string)
2030
db11a2fe9bbc Implemented functions to save the UML graphics to disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
205 @param data persisted data to be parsed (string)
2034
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
206 @return flag indicating success (boolean)
2030
db11a2fe9bbc Implemented functions to save the UML graphics to disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1509
diff changeset
207 """
2034
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
208 parts = data.split(", ")
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
209 if len(parts) < 2:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
210 return False
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
211
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
212 name = ""
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
213 modules = []
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
214
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
215 for part in parts:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
216 key, value = part.split("=", 1)
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
217 if key == "no_modules":
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
218 self.external = Utilities.toBool(value.strip())
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
219 elif key == "name":
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
220 name = value.strip()
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
221 elif key == "modules":
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
222 modules = value.strip().split("||")
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
223 else:
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
224 return False
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
225
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
226 self.model = PackageModel(name, modules)
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
227 self.__createTexts()
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
228 self.__calculateSize()
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
229
8de0fc1f7fef Implemented functions to load UML graphics from disc.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 2033
diff changeset
230 return True

eric ide

mercurial