Graphics/SvgDiagram.py

Fri, 01 Jul 2011 19:46:37 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Fri, 01 Jul 2011 19:46:37 +0200
changeset 1155
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parent 1131
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child 1507
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permissions
-rw-r--r--

Fixed issues setting the printer margins correctly.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2008 - 2011 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 dialog showing a SVG graphic.
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8 """
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9
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10 from PyQt4.QtCore import Qt, QSize
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11 from PyQt4.QtGui import QMainWindow, QPalette, QSizePolicy, QScrollArea, QAction, QMenu, \
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12 QToolBar, QDialog, QPrinter, QPrintDialog, QPainter, QFont, QColor
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13 from PyQt4.QtSvg import QSvgWidget
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14
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15 from .ZoomDialog import ZoomDialog
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16
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17 import UI.Config
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18
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19 import Preferences
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20
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21
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22 class SvgDiagram(QMainWindow):
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23 """
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24 Class implementing a dialog showing a SVG graphic.
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25 """
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26 def __init__(self, svgFile, parent=None, name=None):
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27 """
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28 Constructor
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29
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30 @param svgFile filename of a SVG graphics file to show (string)
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31 @param parent parent widget of the view (QWidget)
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32 @param name name of the view widget (string)
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33 """
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34 super().__init__(parent)
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35 if name:
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36 self.setObjectName(name)
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37 else:
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38 self.setObjectName("SvgDiagram")
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39 self.setWindowTitle(self.trUtf8("SVG-Viewer"))
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40
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41 self.svgWidget = QSvgWidget()
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42 self.svgWidget.setObjectName("svgWidget")
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43 self.svgWidget.setBackgroundRole(QPalette.Base)
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44 self.svgWidget.setSizePolicy(QSizePolicy.Ignored, QSizePolicy.Ignored)
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45
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46 self.svgView = QScrollArea()
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47 self.svgView.setObjectName("svgView")
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48 self.svgView.setBackgroundRole(QPalette.Dark)
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49 self.svgView.setWidget(self.svgWidget)
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50
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51 self.setCentralWidget(self.svgView)
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52
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53 # polish up the dialog
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54 self.resize(QSize(800, 600).expandedTo(self.minimumSizeHint()))
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55
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56 self.zoom = 1.0
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57 self.svgFile = svgFile
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58 self.svgWidget.load(self.svgFile)
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59 self.svgWidget.resize(self.svgWidget.renderer().defaultSize())
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60
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61 self.__initActions()
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62 self.__initContextMenu()
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63 self.__initToolBars()
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64
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65 def __initActions(self):
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66 """
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67 Private method to initialize the view actions.
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68 """
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69 self.closeAct = \
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70 QAction(UI.PixmapCache.getIcon("close.png"),
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71 self.trUtf8("Close"), self)
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72 self.closeAct.triggered[()].connect(self.close)
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73
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74 self.printAct = \
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75 QAction(UI.PixmapCache.getIcon("print.png"),
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76 self.trUtf8("Print"), self)
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77 self.printAct.triggered[()].connect(self.__printDiagram)
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78
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79 self.printPreviewAct = \
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80 QAction(UI.PixmapCache.getIcon("printPreview.png"),
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81 self.trUtf8("Print Preview"), self)
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82 self.printPreviewAct.triggered[()].connect(self.__printPreviewDiagram)
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83
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84 self.zoomInAct = \
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85 QAction(UI.PixmapCache.getIcon("zoomIn.png"),
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86 self.trUtf8("Zoom in"), self)
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87 self.zoomInAct.triggered[()].connect(self.__zoomIn)
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88
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89 self.zoomOutAct = \
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90 QAction(UI.PixmapCache.getIcon("zoomOut.png"),
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91 self.trUtf8("Zoom out"), self)
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92 self.zoomOutAct.triggered[()].connect(self.__zoomOut)
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93
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94 self.zoomAct = \
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95 QAction(UI.PixmapCache.getIcon("zoomTo.png"),
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96 self.trUtf8("Zoom..."), self)
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97 self.zoomAct.triggered[()].connect(self.__zoom)
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98
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99 self.zoomResetAct = \
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100 QAction(UI.PixmapCache.getIcon("zoomReset.png"),
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101 self.trUtf8("Zoom reset"), self)
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102 self.zoomResetAct.triggered[()].connect(self.__zoomReset)
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103
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104 def __initContextMenu(self):
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105 """
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106 Private method to initialize the context menu.
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107 """
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108 self.__menu = QMenu(self)
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109 self.__menu.addAction(self.closeAct)
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110 self.__menu.addSeparator()
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111 self.__menu.addAction(self.printPreviewAct)
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112 self.__menu.addAction(self.printAct)
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113 self.__menu.addSeparator()
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114 self.__menu.addAction(self.zoomInAct)
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115 self.__menu.addAction(self.zoomOutAct)
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116 self.__menu.addAction(self.zoomAct)
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117 self.__menu.addAction(self.zoomResetAct)
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118
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119 self.setContextMenuPolicy(Qt.CustomContextMenu)
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120 self.customContextMenuRequested.connect(self.__showContextMenu)
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121
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122 def __showContextMenu(self, coord):
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123 """
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124 Private slot to show the context menu of the listview.
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125
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126 @param coord the position of the mouse pointer (QPoint)
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127 """
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128 self.__menu.popup(self.mapToGlobal(coord))
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129
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parents:
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130 def __initToolBars(self):
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parents:
diff changeset
131 """
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parents:
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132 Private method to populate the toolbars with our actions.
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parents:
diff changeset
133 """
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parents:
diff changeset
134 self.windowToolBar = QToolBar(self.trUtf8("Window"), self)
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parents:
diff changeset
135 self.windowToolBar.setIconSize(UI.Config.ToolBarIconSize)
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parents:
diff changeset
136 self.windowToolBar.addAction(self.closeAct)
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parents:
diff changeset
137
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parents:
diff changeset
138 self.graphicsToolBar = QToolBar(self.trUtf8("Graphics"), self)
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parents:
diff changeset
139 self.graphicsToolBar.setIconSize(UI.Config.ToolBarIconSize)
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parents:
diff changeset
140 self.graphicsToolBar.addAction(self.printPreviewAct)
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parents:
diff changeset
141 self.graphicsToolBar.addAction(self.printAct)
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parents:
diff changeset
142 self.graphicsToolBar.addSeparator()
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parents:
diff changeset
143 self.graphicsToolBar.addAction(self.zoomInAct)
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parents:
diff changeset
144 self.graphicsToolBar.addAction(self.zoomOutAct)
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parents:
diff changeset
145 self.graphicsToolBar.addAction(self.zoomAct)
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parents:
diff changeset
146 self.graphicsToolBar.addAction(self.zoomResetAct)
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147
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parents:
diff changeset
148 self.addToolBar(Qt.TopToolBarArea, self.windowToolBar)
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parents:
diff changeset
149 self.addToolBar(Qt.TopToolBarArea, self.graphicsToolBar)
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150
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parents:
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151 def getDiagramName(self):
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parents:
diff changeset
152 """
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parents:
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153 Method to retrieve a name for the diagram.
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parents:
diff changeset
154
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parents:
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155 @return name for the diagram
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parents:
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156 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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157 return self.svgFile
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parents:
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158
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parents:
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159 ############################################################################
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parents:
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160 ## Private menu handling methods below.
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parents:
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161 ############################################################################
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parents:
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162
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parents:
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163 def __adjustScrollBar(self, scrollBar, factor):
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parents:
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164 """
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parents:
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165 Private method to adjust a scrollbar by a certain factor.
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166
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parents:
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167 @param scrollBar reference to the scrollbar object (QScrollBar)
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parents:
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168 @param factor factor to adjust by (float)
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parents:
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169 """
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parents:
diff changeset
170 scrollBar.setValue(int(factor * scrollBar.value()
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171 + ((factor - 1) * scrollBar.pageStep() / 2)))
0
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172
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parents:
diff changeset
173 def __doZoom(self, factor):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
174 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
175 Private method to perform the zooming.
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parents:
diff changeset
176
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parents:
diff changeset
177 @param factor zoom factor (float)
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parents:
diff changeset
178 """
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parents:
diff changeset
179 self.zoom *= factor
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parents:
diff changeset
180 self.svgWidget.resize(self.zoom * self.svgWidget.sizeHint())
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parents:
diff changeset
181
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parents:
diff changeset
182 self.__adjustScrollBar(self.svgView.horizontalScrollBar(), factor)
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parents:
diff changeset
183 self.__adjustScrollBar(self.svgView.verticalScrollBar(), factor)
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parents:
diff changeset
184
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parents:
diff changeset
185 def __zoomIn(self):
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parents:
diff changeset
186 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
187 Private method to handle the zoom in context menu entry.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
188 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
189 self.__doZoom(1.25)
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parents:
diff changeset
190
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parents:
diff changeset
191 def __zoomOut(self):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
192 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
193 Private method to handle the zoom out context menu entry.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
194 """
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parents:
diff changeset
195 self.__doZoom(0.8)
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parents:
diff changeset
196
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parents:
diff changeset
197 def __zoomReset(self):
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parents:
diff changeset
198 """
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parents:
diff changeset
199 Private method to handle the reset zoom context menu entry.
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parents:
diff changeset
200 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
201 self.zoom = 1.0
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parents:
diff changeset
202 self.svgWidget.adjustSize()
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parents:
diff changeset
203
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parents:
diff changeset
204 def __zoom(self):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
205 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
206 Private method to handle the zoom context menu action.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
207 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
208 dlg = ZoomDialog(self.zoom, self)
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parents:
diff changeset
209 if dlg.exec_() == QDialog.Accepted:
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parents:
diff changeset
210 zoom = dlg.getZoomSize()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
211 factor = zoom / self.zoom
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
212 self.__doZoom(factor)
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parents:
diff changeset
213
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parents:
diff changeset
214 def __printDiagram(self):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
215 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
216 Private slot called to print the diagram.
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parents:
diff changeset
217 """
945
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diff changeset
218 printer = QPrinter(mode=QPrinter.ScreenResolution)
0
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parents:
diff changeset
219 printer.setFullPage(True)
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parents:
diff changeset
220 if Preferences.getPrinter("ColorMode"):
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parents:
diff changeset
221 printer.setColorMode(QPrinter.Color)
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parents:
diff changeset
222 else:
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parents:
diff changeset
223 printer.setColorMode(QPrinter.GrayScale)
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parents:
diff changeset
224 if Preferences.getPrinter("FirstPageFirst"):
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parents:
diff changeset
225 printer.setPageOrder(QPrinter.FirstPageFirst)
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parents:
diff changeset
226 else:
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parents:
diff changeset
227 printer.setPageOrder(QPrinter.LastPageFirst)
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parents:
diff changeset
228 printer.setPrinterName(Preferences.getPrinter("PrinterName"))
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parents:
diff changeset
229
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parents:
diff changeset
230 printDialog = QPrintDialog(printer, self)
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parents:
diff changeset
231 if printDialog.exec_():
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
232 self.__print(printer)
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parents:
diff changeset
233
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
234 def __printPreviewDiagram(self):
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parents:
diff changeset
235 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
236 Private slot called to show a print preview of the diagram.
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parents:
diff changeset
237 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
238 from PyQt4.QtGui import QPrintPreviewDialog
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parents:
diff changeset
239
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parents: 791
diff changeset
240 printer = QPrinter(mode=QPrinter.ScreenResolution)
0
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parents:
diff changeset
241 printer.setFullPage(True)
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parents:
diff changeset
242 if Preferences.getPrinter("ColorMode"):
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parents:
diff changeset
243 printer.setColorMode(QPrinter.Color)
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parents:
diff changeset
244 else:
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parents:
diff changeset
245 printer.setColorMode(QPrinter.GrayScale)
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parents:
diff changeset
246 if Preferences.getPrinter("FirstPageFirst"):
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parents:
diff changeset
247 printer.setPageOrder(QPrinter.FirstPageFirst)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
248 else:
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parents:
diff changeset
249 printer.setPageOrder(QPrinter.LastPageFirst)
1155
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1131
diff changeset
250 printer.setPageMargins(
4cbef040f07e Fixed issues setting the printer margins correctly.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1131
diff changeset
251 Preferences.getPrinter("LeftMargin") * 10,
4cbef040f07e Fixed issues setting the printer margins correctly.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1131
diff changeset
252 Preferences.getPrinter("TopMargin") * 10,
4cbef040f07e Fixed issues setting the printer margins correctly.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1131
diff changeset
253 Preferences.getPrinter("RightMargin") * 10,
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1131
diff changeset
254 Preferences.getPrinter("BottomMargin") * 10,
4cbef040f07e Fixed issues setting the printer margins correctly.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1131
diff changeset
255 QPrinter.Millimeter
4cbef040f07e Fixed issues setting the printer margins correctly.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 1131
diff changeset
256 )
0
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parents:
diff changeset
257 printer.setPrinterName(Preferences.getPrinter("PrinterName"))
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parents:
diff changeset
258
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parents:
diff changeset
259 preview = QPrintPreviewDialog(printer, self)
483
ca7d8599a575 Continued porting signal/slot usage to the new API.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 458
diff changeset
260 preview.paintRequested[QPrinter].connect(self.__print)
0
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parents:
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261 preview.exec_()
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262
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263 def __print(self, printer):
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264 """
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265 Private slot to the actual printing.
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266
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267 @param printer reference to the printer object (QPrinter)
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268 """
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269 painter = QPainter()
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270 painter.begin(printer)
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271
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272 # calculate margin and width of printout
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273 font = QFont("times", 10)
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274 painter.setFont(font)
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275 fm = painter.fontMetrics()
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276 fontHeight = fm.lineSpacing()
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277 marginX = printer.pageRect().x() - printer.paperRect().x()
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278 marginX = \
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279 Preferences.getPrinter("LeftMargin") * int(printer.resolution() / 2.54) \
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280 - marginX
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281 marginY = printer.pageRect().y() - printer.paperRect().y()
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282 marginY = \
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283 Preferences.getPrinter("TopMargin") * int(printer.resolution() / 2.54) \
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284 - marginY
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285
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286 width = printer.width() - marginX \
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287 - Preferences.getPrinter("RightMargin") * int(printer.resolution() / 2.54)
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288 height = printer.height() - fontHeight - 4 - marginY \
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289 - Preferences.getPrinter("BottomMargin") * int(printer.resolution() / 2.54)
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290
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291 # write a foot note
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292 s = self.trUtf8("Diagram: {0}").format(self.getDiagramName())
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293 tc = QColor(50, 50, 50)
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294 painter.setPen(tc)
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295 painter.drawRect(marginX, marginY, width, height)
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8cd4d08fa9f6 Made code mostly PEP 8 compliant (except all whitespace and line length).
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296 painter.drawLine(marginX, marginY + height + 2,
0
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297 marginX + width, marginY + height + 2)
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298 painter.setFont(font)
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299 painter.drawText(marginX, marginY + height + 4, width,
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300 fontHeight, Qt.AlignRight, s)
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301
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302 # render the diagram
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303 painter.setViewport(marginX, marginY, width, height)
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304 self.svgWidget.renderer().render(painter)
458
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305 painter.end()

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