baseCodeEditor.py 文件源码

def keyPressEvent(self, event):
        key = event.key()
        if key == Qt.Key_Return:
            cursor = self.textCursor()
            indentLvl = self.findLineIndentLevel()
            if self.openBlockDelimiter is not None:
                cursor.movePosition(QTextCursor.PreviousCharacter,
                                    QTextCursor.KeepAnchor)
                if cursor.selectedText() == self.openBlockDelimiter:
                    indentLvl += 1
            super(BaseCodeEditor, self).keyPressEvent(event)
            newLineSpace = "".join(self._indent for _ in range(indentLvl))
            cursor = self.textCursor()
            cursor.insertText(newLineSpace)
        elif key in (Qt.Key_Backspace, Qt.Key_Backtab):
            cursor = self.textCursor()
            if key == Qt.Key_Backtab and cursor.hasSelection():
                self.performLinewiseIndent(cursor, False)
            else:
                cursor.movePosition(QTextCursor.PreviousCharacter,
                                    QTextCursor.KeepAnchor,
                                    len(self._indent))
                if cursor.selectedText() == self._indent:
                    cursor.removeSelectedText()
                else:
                    super(BaseCodeEditor, self).keyPressEvent(event)
        elif key == Qt.Key_Tab:
            cursor = self.textCursor()
            if cursor.hasSelection():
                self.performLinewiseIndent(cursor)
            else:
                cursor.insertText(self._indent)
        else:
            super(BaseCodeEditor, self).keyPressEvent(event)

    # --------------
    # Other builtins
    # --------------