highlighter.py

   1 # BiaWeb Website content manager (c) 2010 V.Harishankar
   2 # HTML highlighter class
   3
   4 import PyQt4
   5
   6 class SimpleHtmlHighlighter (PyQt4.QtGui.QSyntaxHighlighter):
   7         def __init__ (self, document):
   8                 PyQt4.QtGui.QSyntaxHighlighter.__init__ (self, document)
   9
  10         def highlightBlock (self, text):
  11                 # define the character highlight formats
  12                 charfmt1 = PyQt4.QtGui.QTextCharFormat ()
  13                 charfmt1.setFontWeight (PyQt4.QtGui.QFont.Bold)
  14                 charfmt1.setForeground (PyQt4.QtCore.Qt.blue)
  15
  16                 charfmt2 = PyQt4.QtGui.QTextCharFormat ()
  17                 charfmt2.setForeground (PyQt4.QtCore.Qt.darkGreen)
  18
  19                 # matching regular expressions
  20                 htmltagexps = [ (PyQt4.QtCore.QRegExp ("<[^<>]+>"), charfmt1),
  21                                                 (PyQt4.QtCore.QRegExp ("\"[^\"]+\""), charfmt2)
  22                                         ]
  23
  24                 # run through the list of regular expressions to highlight
  25                 for htmltagexp, charfmt in htmltagexps:
  26                         index = htmltagexp.indexIn (text)
  27                         while index >= 0:
  28                                 length = htmltagexp.matchedLength ()
  29                                 # self.setFormat is actual code highlighting
  30                                 self.setFormat (index, length, charfmt)
  31                                 index = htmltagexp.indexIn (text, index + length)