def onTextChange(self, text): regExp = QRegExp() regExp.setPattern("[^0-9]*") m_correctText = "" if regExp.exactMatch(text): m_correctText = text QToolTip.hideText() else: point = QPoint(self.l.geometry().left(), self.l.geometry().bottom()) self.l.setText(m_correctText) QToolTip.showText(point, "Cannot enter number..")
class MacroHighlighter(QSyntaxHighlighter): def __init__(self,textboxdoc,valid_list_of_commands): QSyntaxHighlighter.__init__(self,textboxdoc) self.valid_syntax="|".join([command.regexp_str for command in valid_list_of_commands]) self.my_expression = QRegExp(self.valid_syntax) #define a blue font format for valid commands self.valid = QTextCharFormat() self.valid.setForeground(Qt.black) #define a bold red font format for invalid commands self.invalid = QTextCharFormat() self.invalid.setFontWeight(QFont.Bold) self.invalid.setForeground(Qt.red) #define a blue font format for valid parameters self.valid_value=QTextCharFormat() self.valid_value.setFontWeight(QFont.Bold) #self.valid_value.setForeground(QColor.fromRgb(255,85,0)) self.valid_value.setForeground(Qt.blue) def highlightBlock(self, text): #this function is automatically called when some text is changed #in the texbox. 'text' is the line of text where the change occured #check if the line of text contains a valid command match = self.my_expression.exactMatch(text) if match: #valid command found: highlight the command in blue self.setFormat(0, len(text), self.valid) #highlight the parameters in orange #loop on all the parameters that can be captured for i in range(self.my_expression.captureCount()): #if a parameter was captured, it's position in the text will be >=0 and its capture contains some value 'xxx' #otherwise its position is -1 and its capture contains an empty string '' if self.my_expression.pos(i+1)!=-1: self.setFormat(self.my_expression.pos(i+1), len(self.my_expression.cap(i+1)), self.valid_value) else: #no valid command found: highlight in red self.setFormat(0, len(text), self.invalid)