>> I hope that someone can help me.
>>
>> Best regards.
>> Christophe
hello christophe
here's a basic line-based custom lexer that should get you started:
import sys
from PyQt4 import QtCore, QtGui, Qsci
class MainWindow(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.setWindowTitle('Custom Lexer Example')
self.setGeometry(QtCore.QRect(50,200,400,400))
self.editor = Qsci.QsciScintilla(self)
self.editor.setUtf8(True)
self.editor.setMarginWidth(2, 15)
self.editor.setFolding(True)
self.setCentralWidget(self.editor)
self.lexer = CustomLexer(self.editor)
self.editor.setLexer(self.lexer)
self.editor.setText('\n# sample source\n\nfoo = 1\nbar = 2\n')
class CustomLexer(Qsci.QsciLexerCustom):
def __init__(self, parent):
Qsci.QsciLexerCustom.__init__(self, parent)
self._styles = {
0: 'Default',
1: 'Comment',
2: 'Key',
3: 'Assignment',
4: 'Value',
}
for key,value in self._styles.iteritems():
setattr(self, value, key)
def description(self, style):
return self._styles.get(style, '')
def defaultColor(self, style):
if style == self.Default:
return QtGui.QColor('#000000')
elif style == self.Comment:
return QtGui.QColor('#C0C0C0')
elif style == self.Key:
return QtGui.QColor('#0000CC')
elif style == self.Assignment:
return QtGui.QColor('#CC0000')
elif style == self.Value:
return QtGui.QColor('#00CC00')
return Qsci.QsciLexerCustom.defaultColor(self, style)
def styleText(self, start, end):
editor = self.editor()
if editor is None:
return
# scintilla works with encoded bytes, not decoded characters.
# this matters if the source contains non-ascii characters and
# a multi-byte encoding is used (e.g. utf-8)
source = ''
if end > editor.length():
end = editor.length()
if end > start:
if sys.hexversion >= 0x02060000:
# faster when styling big files, but needs python 2.6
source = bytearray(end - start)
editor.SendScintilla(
editor.SCI_GETTEXTRANGE, start, end, source)
else:
source = unicode(editor.text()
).encode('utf-8')[start:end]
if not source:
return
# the line index will also be needed to implement folding
index = editor.SendScintilla(editor.SCI_LINEFROMPOSITION, start)
if index > 0:
# the previous state may be needed for multi-line styling
pos = editor.SendScintilla(
editor.SCI_GETLINEENDPOSITION, index - 1)
state = editor.SendScintilla(editor.SCI_GETSTYLEAT, pos)
else:
state = self.Default
set_style = self.setStyling
self.startStyling(start, 0x1f)
# scintilla always asks to style whole lines
for line in source.splitlines(True):
length = len(line)
if line.startswith('#'):
state = self.Comment
else:
# the following will style lines like "x = 0"
pos = line.find('=')
if pos > 0:
set_style(pos, self.Key)
set_style(1, self.Assignment)
length = length - pos - 1
state = self.Value
else:
state = self.Default
set_style(length, state)
# folding implementation goes here
index += 1
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
app.connect(app, QtCore.SIGNAL('lastWindowClosed()'),
QtCore.SLOT('quit()'))
win = MainWindow()
win.show()
sys.exit(app.exec_())
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