Source Code for Module node_manager_fkie.html_delegate

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32   
33  from PySide import QtGui 
34  from PySide import QtCore 
35   
36 -class HTMLDelegate(QtGui.QStyledItemDelegate): 
37    ''' 
38    A class to display the HTML text in QTreeView. 
39    ''' 
40     
41 -  def paint(self, painter, option, index): 
42      ''' 
43      Use the QTextDokument to represent the HTML text. 
44      @see: U{http://www.pyside.org/docs/pyside/PySide/QtGui/QAbstractItemDelegate.html#PySide.QtGui.QAbstractItemDelegate} 
45      ''' 
46      options = QtGui.QStyleOptionViewItemV4(option) 
47      self.initStyleOption(options, index) 
48   
49      style = QtGui.QApplication.style() if options.widget is None else options.widget.style() 
50   
51      doc = QtGui.QTextDocument() 
52      doc.setHtml(options.text) 
53      doc.setTextWidth(option.rect.width()) 
54   
55      options.text = '' 
56      style.drawControl(QtGui.QStyle.CE_ItemViewItem, options, painter); 
57   
58      ctx = QtGui.QAbstractTextDocumentLayout.PaintContext() 
59   
60      #Highlighting text if item is selected 
61      #if (optionV4.state and QStyle::State_Selected): 
62      #  ctx.palette.setColor(QPalette::Text, optionV4.palette.color(QPalette::Active, QPalette::HighlightedText)); 
63   
64      textRect = style.subElementRect(QtGui.QStyle.SE_ItemViewItemText, options, options.widget) 
65      painter.save() 
66      painter.translate(QtCore.QPoint(textRect.topLeft().x(), textRect.topLeft().y()-3)) 
67      painter.setClipRect(textRect.translated(-textRect.topLeft())) 
68      doc.documentLayout().draw(painter, ctx) 
69   
70      painter.restore() 
71   
72 -  def sizeHint(self, option, index): 
73      ''' 
74      Determines and returns the size of the text after the format. 
75      @see: U{http://www.pyside.org/docs/pyside/PySide/QtGui/QAbstractItemDelegate.html#PySide.QtGui.QAbstractItemDelegate} 
76      ''' 
77      options = QtGui.QStyleOptionViewItemV4(option) 
78      self.initStyleOption(options,index) 
79   
80      doc = QtGui.QTextDocument() 
81      doc.setHtml(options.text) 
82      doc.setTextWidth(options.rect.width()) 
83      metric = QtGui.QFontMetrics(doc.defaultFont()) 
84      return QtCore.QSize(doc.idealWidth(), metric.height()+4) 
85