Question

因为我要'。'，所以更改了QDoubleSpinbox。而不是“，”，但现在setDecimals无法正常工作...我如何保留qdoublespinbox分别对应于setdecimals的功能并保留我的重写类（或等效的/更好的东西）？

我尝试做：

return QtWidgets.QWidget.locale().toString(_value, QLatin1Char('f'), QtWidgets.QDoubleSpinBox.decimals())

在textFromValue下，但出现错误：

TypeError: locale(self): first argument of unbound method must have type 'QWidget'

我不明白。我也不相信pyqt5支持QLatin1Char。

from PyQt5 import QtCore, QtGui, QtWidgets

class DotDoubleSpinBox(QtWidgets.QDoubleSpinBox):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        self.setDecimals(4)
        self.setMinimumWidth(300)
        self.setMaximum(9999999999)

    def validate(self, text, position):
        if "." in text:
            state = QtGui.QValidator.Acceptable
        elif "," in text:
            state = QtGui.QValidator.Invalid
        else:
            state = QtGui.QValidator.Intermediate

        return (state, text, position)

    def valueFromText(self, text):
        text = text.replace(",", ".")
        return float(text)

    def textFromValue(self, value):
        _value = str(value)
        _value = _value.replace(",", ".")
        return _value

class Ui_MainWindow(object):

    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.doubleSpinBox = DotDoubleSpinBox(self.centralwidget)
        self.doubleSpinBox.setGeometry(QtCore.QRect(260, 110, 80, 32))
        self.doubleSpinBox.setObjectName("doubleSpinBox")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 30))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

Answer 1

我发现整个问题比我最初设想的要容易得多。原来，您只需要将语言环境设置为使用'。'的语言环境即可。而不是'，'。

self.doubleSpinBox.setLocale(QtCore.QLocale(QtCore.QLocale.English, QtCore.QLocale.UnitedStates))

那样就可以了。无论如何，谢谢几乎能给出完美答案的回答者。

Answer 2

尝试一下：

from PyQt5 import QtCore, QtGui, QtWidgets

class DotDoubleSpinBox(QtWidgets.QDoubleSpinBox):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.setDecimals(4)         
        self.setMinimumWidth(300)
        self.setMaximum(999999999)

    def validate(self, text, position):   
        p = position-1 if position>0 else 0     # p <- index

        if text == "" or ((text[p] > "9" or text[p] < "0") and text[p] != "."):
            state = QtGui.QValidator.Invalid
        elif "." == text[p]: 
            if ("." in text[0:p]) or ("." in text[p:]):
                state = QtGui.QValidator.Invalid
            else:
                state = QtGui.QValidator.Acceptable
                self.setValue(float(text))
        elif "," == text[p]: 
            state = QtGui.QValidator.Invalid
        else:
            state = QtGui.QValidator.Intermediate
            self.setValue(float(text))

        return (state, text, position)

    def valueFromText(self, text):
        #text = text.replace(",", ".")
        return float("%.4f" % (float(text)))  

    def textFromValue(self, value):
        _value = "%.4f" % (float(value))
        return _value


class Ui_MainWindow(object):

    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.doubleSpinBox = DotDoubleSpinBox(self.centralwidget)
        self.doubleSpinBox.setGeometry(QtCore.QRect(260, 110, 80, 32))
        self.doubleSpinBox.setObjectName("doubleSpinBox")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 30))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

使setDecimals与重写的QDoubleSpinBox一起使用

2 个答案: