def init(self):
# create a formLayout
form_layout = QFormLayout(self)
int_line_edit = QLineEdit()
double_line_edit = QLineEdit()
reg_line_edit = QLineEdit()
form_layout.addRow("int", int_line_edit)
form_layout.addRow("double", double_line_edit)
form_layout.addRow("regular", reg_line_edit)
int_line_edit.setPlaceholderText("int")
double_line_edit.setPlaceholderText("double")
reg_line_edit.setPlaceholderText("regular")
int_validator = QIntValidator()
int_validator.setRange(1, 99)
double_validator = QDoubleValidator()
double_validator.setRange(-100, 100)
double_validator.setNotation(QDoubleValidator.StandardNotation)
double_validator.setDecimals(2)
reg_validator = QRegExpValidator()
reg_validator.setRegExp(QRegExp('[0-9a-zA-Z]'))
# set validator
int_line_edit.setValidator(int_validator)
double_line_edit.setValidator(double_validator)
reg_line_edit.setValidator(reg_validator)
self.setLayout(form_layout)
def initUI(self):
self.setWindowTitle('校验器')
formLayout = QFormLayout()
IntLineEdit = QLineEdit()
DoubleLineEdit = QLineEdit()
validatorLineEdit = QLineEdit()
formLayout.addRow('int', IntLineEdit)
formLayout.addRow('double', DoubleLineEdit)
formLayout.addRow('数字和字母', validatorLineEdit)
IntLineEdit.setPlaceholderText('整型')
#整数校验器1-99
intValidator = QIntValidator(self)
intValidator.setRange(1, 99)
#浮点
doubleValidator = QDoubleValidator(self)
doubleValidator.setRange(-360, 360)
doubleValidator.setNotation(QDoubleValidator.StandardNotation)
doubleValidator.setDecimals(2) #小数点2位
#字符和数字
reg = QRegExp('[a-zA-Z0-9]+$')
validator = QRegExpValidator(self)
validator.setRegExp(reg)
#设置校验器
IntLineEdit.setValidator(intValidator)
DoubleLineEdit.setValidator(doubleValidator)
validatorLineEdit.setValidator(validator)
self.setLayout(formLayout)
def initUI(self):
self.setWindowTitle('校验器')
formLayout = QFormLayout()
intLineEdit = QLineEdit()
doubleLineEdit = QLineEdit()
regLineEdit = QLineEdit()
formLayout.addRow('整数', intLineEdit)
formLayout.addRow('浮点数', doubleLineEdit)
formLayout.addRow('正则表达式', regLineEdit)
intLineEdit.setPlaceholderText('整型数字')
doubleLineEdit.setPlaceholderText('浮点数')
regLineEdit.setPlaceholderText('正则表达式')
intValidator = QIntValidator()
intValidator.setRange(0, 1000)
doubleValidator = QDoubleValidator()
doubleValidator.setRange(-100, 100)
doubleValidator.setNotation(QDoubleValidator.StandardNotation)
doubleValidator.setDecimals(2) # 小数精度
reg = QRegExp(r"[a-zA-Z0-9]+$")
regValidator = QRegExpValidator(self)
regValidator.setRegExp(reg)
# 设置校验器
intLineEdit.setValidator(intValidator)
doubleLineEdit.setValidator(doubleValidator)
regLineEdit.setValidator(regValidator)
self.setLayout(formLayout)
def init(self):
# 开始按键
self.pushButton.clicked.connect(self.pushButton_event)
# 结束按键
self.pushButton_2.clicked.connect(self.pushButton_event2)
# 限制为数字和字符
self.lineEdit.setPlaceholderText("只能键入数字和字符")
reg = QRegExp("[a-zA-Z0-9]+$")
LE1Validator = QRegExpValidator(self)
LE1Validator.setRegExp(reg)
self.lineEdit.setValidator(LE1Validator)
#设置浮点数限制 范围0~86400，小数点1位
LE2Validator = QDoubleValidator(self)
LE2Validator.setRange(0, 86400)
LE2Validator.setNotation(QDoubleValidator.StandardNotation)
LE2Validator.setDecimals(1)
self.lineEdit_2.setValidator(LE2Validator)
self.lineEdit_2.setPlaceholderText("最小为0.1s")
self.lineEdit_3.setValidator(LE2Validator)
self.lineEdit_3.setPlaceholderText("最小为0.1s")
# 启动后台
self.lk.start()
def initUI(self):
self.add_sensor_confirm.clicked.connect(self.insert_sensor_into_db)
self.add_sensor_cancle.clicked.connect(self.close)
self.voltage1_input.textChanged.connect(self.updateUI)
self.voltage2_input.textChanged.connect(self.updateUI)
self.pressure1_input.textChanged.connect(self.updateUI)
self.pressure2_input.textChanged.connect(self.updateUI)
self.value2_input.textChanged.connect(self.updateUI)
self.value1_input.textChanged.connect(self.updateUI)
doubleValidator = QDoubleValidator(self)
doubleValidator.setRange(-10000, 10000)
doubleValidator.setNotation(QDoubleValidator.StandardNotation)
doubleValidator.setDecimals(4)
self.value1_input.setValidator(doubleValidator)
self.value2_input.setValidator(doubleValidator)
self.pressure2_input.setValidator(doubleValidator)
self.pressure1_input.setValidator(doubleValidator)
self.voltage2_input.setValidator(doubleValidator)
self.voltage1_input.setValidator(doubleValidator)
self.vp_input.setValidator(doubleValidator)
self.zv_input.setValidator(doubleValidator)
self.pt_input.setValidator(doubleValidator)
self.pu_input.setValidator(doubleValidator)
self.ad2_max_input.setValidator(doubleValidator)
self.pp_input.setValidator(doubleValidator)
self.resulotion_input.setValidator(doubleValidator)
class LineEdit(QLineEdit):
checkVal = pyqtSignal(float)
def __init__(self, *args, **kwargs):
super(LineEdit, self).__init__(*args, **kwargs)
self.validator = QDoubleValidator()
self.setValidator(self.validator)
self.textChanged.connect(self.new_text)
self.returnPressed.connect(self.check_validator)
self.ntext = self.text()
def new_text(self, text):
if self.hasAcceptableInput():
self.ntext = text
def keyPressEvent(self, event):
super().keyPressEvent(event)
if event.key() == Qt.Key_Return and not self.hasAcceptableInput():
self.check_validator()
def check_validator(self):
try:
if float(self.text()) > self.validator.top():
self.setText(str(self.validator.top()))
elif float(self.text()) < self.validator.bottom():
self.setText(str(self.validator.bottom()))
except ValueError:
QMessageBox.about(self, "Error", "Input can only be a number")
self.setText(self.ntext)
self.checkVal.emit(float(self.ntext))
def valRange(self, x1, x2):
self.validator.setRange(x1, x2)
self.validator.setDecimals(6)
self.validator.setNotation(QDoubleValidator.StandardNotation)
def __init__(self, parent=None):
super(LineEditDemo, self).__init__(parent)
self.setWindowTitle('QLineEdit Validator sample')
flo = QFormLayout()
pIntLineEdit = QLineEdit()
pDoubleLineEdit = QLineEdit()
pValidatorLineEdit = QLineEdit()
flo.addRow('Integer', pIntLineEdit)
flo.addRow('Float', pDoubleLineEdit)
flo.addRow('Letter and number', pValidatorLineEdit)
pIntLineEdit.setPlaceholderText('Integer')
pDoubleLineEdit.setPlaceholderText('Float')
pValidatorLineEdit.setPlaceholderText('Letter and number')
pIntValidator = QIntValidator(self)
pIntValidator.setRange(1, 99)
pDoubleValidator = QDoubleValidator(self)
pDoubleValidator.setRange(-100, 100)
pDoubleValidator.setNotation(QDoubleValidator.StandardNotation)
pDoubleValidator.setDecimals(2)
reg = QRegExp("[a-zA-Z0-9]+$")
pValidator = QRegExpValidator(self)
pValidator.setRegExp(reg)
pIntLineEdit.setValidator(pIntValidator)
pDoubleLineEdit.setValidator(pDoubleValidator)
pValidatorLineEdit.setValidator(pValidator)
self.setLayout(flo)
def initUI(self):
self.setWindowTitle("校验器")
formlayout = QFormLayout(self)
intLineEdit = QLineEdit()
doubleLineEdit = QLineEdit()
validatorLineEdit = QLineEdit()
formlayout.addRow("整数类型", intLineEdit)
formlayout.addRow("浮点类型", doubleLineEdit)
formlayout.addRow("数字和字母", validatorLineEdit)
intLineEdit.setPlaceholderText("整数类型")
doubleLineEdit.setPlaceholderText("浮点类型")
validatorLineEdit.setPlaceholderText("数字和字母")
intValidator = QIntValidator(self)
intValidator.setRange(1, 99)
floatValidator = QDoubleValidator(self)
floatValidator.setRange(-360, 360)
floatValidator.setNotation(QDoubleValidator.StandardNotation)
floatValidator.setDecimals(2)
reg = QRegExp('[a-zA-z0-9]+$')
validator = QRegExpValidator(self)
validator.setRegExp(reg)
intLineEdit.setValidator(intValidator)
doubleLineEdit.setValidator(floatValidator)
validatorLineEdit.setValidator(validator)
def initUI(self):
self.setWindowTitle('校验器')
intLineEdit = QLineEdit()
doubleLineEdit = QLineEdit()
regExpLineEdit = QLineEdit()
intLineEdit.setPlaceholderText('整数')
doubleLineEdit.setPlaceholderText('小数')
regExpLineEdit.setPlaceholderText('字母和数字')
# 创建校验器
intValidator = QIntValidator(self)
intValidator.setRange(1, 50) # [1,50]取值范围
doubleValidator = QDoubleValidator(self)
doubleValidator.setRange(-100, 100, 2) # [-100,100]小数点后两位
doubleValidator.setNotation(
QDoubleValidator.StandardNotation) # 标准化将字符串转为double
regExpValidator = QRegExpValidator(self)
reg = QRegExp('[a-zA-Z0-9]+$')
regExpValidator.setRegExp(reg)
# 设置校验器
intLineEdit.setValidator(intValidator)
doubleLineEdit.setValidator(doubleValidator)
regExpLineEdit.setValidator(regExpValidator)
formLayout = QFormLayout()
formLayout.addRow('整型类型', intLineEdit)
formLayout.addRow('浮点类型', doubleLineEdit)
formLayout.addRow('数字和字母', regExpLineEdit)
self.setLayout(formLayout)
def ui(self):
layout = QFormLayout(self)
for k, v in self.parameters.items():
if v['kind'] == ParameterDialog.ComboBox:
comboBox = QComboBox()
comboBox.addItems(v['items'])
layout.addRow(k, comboBox)
elif v['kind'] == ParameterDialog.FloatSlider:
f = lambda n: v['min'] + n / 100 * (v['max'] - v['min'])
g = lambda x: int((x - v['min']) / (v['max'] - v['min']) * 100)
slider = QSlider(Qt.Horizontal)
slider.setMinimum(0)
slider.setMaximum(100)
slider.setSingleStep(1)
slider.setValue(g(v['init']))
le = QLineEdit()
le.setPlaceholderText(v['init'])
dv = QDoubleValidator(self)
dv.setRange(v['min'], v['max'])
dv.setNotation(QDoubleValidator.StandardNotation)
dv.setDecimals(2)
le.setValidator(dv)
# slider.valueChanged.connect(lambda n: le.setText(f(n)))
# le.textChanged.connect(lambda x: slider.setValue(g(x)))
hlayout = QHBoxLayout()
hlayout.addWidget(slider, alignment=Qt.AlignLeft)
hlayout.addWidget(le, alignment=Qt.AlignRight)
layout.addRow(k, hlayout)
self.setLayout(layout)
def init_ui(self):
self.setWindowTitle('教验器')
#创建表单布局
formLayout = QFormLayout(self)
intLineEdit = QLineEdit()
doubleLineEdit = QLineEdit()
validatorLineEdit = QLineEdit()
formLayout.addRow("整型", intLineEdit)
formLayout.addRow("浮点型", doubleLineEdit)
formLayout.addRow("数字和字母", validatorLineEdit)
#int validator
intValidator = QIntValidator(self)
intValidator.setRange(1, 99)
#double validator
doubleValidator = QDoubleValidator(self)
doubleValidator.setRange(-360, 360)
doubleValidator.setNotation(QDoubleValidator.StandardNotation)
doubleValidator.setDecimals(2)
#validator
reg = QRegExp('[a-zA-Z0-9]+$')
validator = QRegExpValidator()
validator.setRegExp(reg)
#设置jiaoyanqi
intLineEdit.setValidator(intValidator)
doubleLineEdit.setValidator(doubleValidator)
validatorLineEdit.setValidator(validator)
self.setLayout(formLayout)
def initGUI(self):
self.setWindowTitle("校验器")
formlayout = QFormLayout()
intLineEdit = QLineEdit(self)
doubleLineEdit = QLineEdit(self)
validatorLineEdit = QLineEdit(self)
formlayout.addRow("整数校验", intLineEdit)
formlayout.addRow("浮点校验", doubleLineEdit)
formlayout.addRow("数字和字母校验", validatorLineEdit)
intLineEdit.setPlaceholderText("请输入整数")
doubleLineEdit.setPlaceholderText("请输入浮点数")
validatorLineEdit.setPlaceholderText("请输入数字和字母")
intValidator = QIntValidator(self)
intValidator.setRange(1, 10)
doubleValidator = QDoubleValidator(self)
doubleValidator.setRange(-180, 180)
doubleValidator.setNotation(QDoubleValidator.StandardNotation)
# 小数点后两位
doubleValidator.setDecimals(2)
reg = QRegExp('[a-zA-Z0-9]+$')
regValidator = QRegExpValidator(self)
regValidator.setRegExp(reg)
intLineEdit.setValidator(intValidator)
doubleLineEdit.setValidator(doubleValidator)
validatorLineEdit.setValidator(regValidator)
self.setLayout(formlayout)
def __init__(self, parent=None):
super(MainWin, self).__init__(parent)
flo = QFormLayout()
pIntLineEdit = QLineEdit()
pDoubleLineEdit = QLineEdit()
pValidatorLineEdit = QLineEdit()
flo.addRow('整數', pIntLineEdit)
flo.addRow('浮點數', pDoubleLineEdit)
flo.addRow('字母和數字', pValidatorLineEdit)
pIntLineEdit.setPlaceholderText('整數')
pDoubleLineEdit.setPlaceholderText('浮點數')
pValidatorLineEdit.setPlaceholderText('字母和數字')
pIntValidator = QIntValidator(self)
pIntValidator.setRange(1, 99)
pDoubleValidator = QDoubleValidator(self)
pDoubleValidator.setRange(-360, 360)
pDoubleValidator.setNotation(QDoubleValidator.StandardNotation)
pDoubleValidator.setDecimals(2)
reg = QRegExp('[a-zA-Z0-9]+$')
pValidator = QRegExpValidator(self)
pValidator.setRegExp(reg)
pIntLineEdit.setValidator(pIntValidator)
pDoubleLineEdit.setValidator(pDoubleValidator)
pValidatorLineEdit.setValidator(pValidator)
self.setLayout(flo)
self.setWindowTitle('QLineEdit範例')
def __init__(self):
QtWidgets.QMainWindow.__init__(self)
Ui_MainWindow.__init__(self)
self.setFixedHeight(525)
self.setupUi(self)
#Init GUI elements
validator = QDoubleValidator()
validator.setNotation(QtGui.QDoubleValidator.StandardNotation)
validator.setRange(0, 50.00, 2)
self.pizzaPrice_LE_1.setValidator(validator)
self.pizzaPrice_LE_2.setValidator(validator)
self.pizzaPrice_LE_3.setValidator(validator)
self.pizzaPrice_LE_4.setValidator(validator)
self.pizza_round_label.setHidden(True)
self.pizza_quad_label.setHidden(True)
self.missing_Input_Label.setHidden(True)
self.diagram_GV.setHidden(True)
#signals (events)
self.calculate_PB.clicked.connect(self.check_Inputs_AndCalc)
self.clear_PB.clicked.connect(self.clear_all_LE)
self.length_verticalSlider.valueChanged.connect(self.set_length)
self.width_verticalSlider.valueChanged.connect(self.set_width)
self.hiddenButton_PB.clicked.connect(self.show_images)
self.diagram_PB.clicked.connect(self.show_diagram)
self.diagram_GV.setBackground('#baa7ba')
styles = {'color': 'y', 'font-size': '18px'}
self.diagram_GV.setLabel('left', 'rel. Preis [Cent/cm²]', **styles)
self.diagram_GV.setLabel('bottom', 'Pizzafläche [cm²]', **styles)
pen = pg.mkPen(color=(0, 0, 0), width=1)
self.diagram_GV.plotItem.getAxis('left').setPen(pen)
self.diagram_GV.plotItem.getAxis('left').setTextPen(pen)
self.diagram_GV.plotItem.getAxis('bottom').setPen(pen)
self.diagram_GV.plotItem.getAxis('bottom').setTextPen(pen)
def initUI(self):
self.setWindowTitle('QlineLabel校验器')
formlayout = QFormLayout(self)
intLineEdit = QLineEdit()
doubleLineEidt = QLineEdit()
validatorLineEdit = QLineEdit()
formlayout.addRow('整数类型', intLineEdit)
formlayout.addRow('浮点数 ', doubleLineEidt)
formlayout.addRow('数字字母', validatorLineEdit)
intLineEdit.setPlaceholderText('整数')
doubleLineEidt.setPlaceholderText('浮点数')
validatorLineEdit.setPlaceholderText('字母')
# 整数校验器
intValidator = QIntValidator(self)
intValidator.setRange(1, 99)
doubleValidator = QDoubleValidator(self)
doubleValidator.setRange(-360, 360)
doubleValidator.setNotation(QDoubleValidator.StandardNotation)
doubleValidator.setDecimals(2)
reg = QRegExp('[a-zA-Z0-9]+$')
validator = QRegExpValidator(self)
validator.setRegExp(reg)
intLineEdit.setValidator(intValidator)
doubleLineEidt.setValidator(doubleValidator)
validatorLineEdit.setValidator(validator)
def initUI(self):
self.setWindowTitle("校验器")
#创建表单布局
formlayout = QFormLayout()
intLineEdit = QLineEdit()
doubleLineEdit = QLineEdit()
validatorLineEdit = QLineEdit()
formlayout.addRow("整数类型", intLineEdit)
formlayout.addRow("浮点类型", doubleLineEdit)
formlayout.addRow("数字和字母", validatorLineEdit)
intLineEdit.setPlaceholderText("整型")
doubleLineEdit.setPlaceholderText("浮点")
validatorLineEdit.setPlaceholderText("字母和数字")
# 整数校验器
intValidator = QIntValidator(self)
intValidator.setRange(1, 99)
#浮点校验器
doubleValidator = QDoubleValidator(self)
doubleValidator.setRange(-360, 360)
doubleValidator.setNotation(QDoubleValidator.StandardNotation)
#设置精度，小数点2位
doubleValidator.setDecimals(2)
#字符和数字
reg = QRegExp('[a-zA-Z0-9]+$')
validator = QRegExpValidator(self)
validator.setRegExp(reg)
#设置校验器
intLineEdit.setValidator(intValidator)
doubleLineEdit.setValidator(doubleValidator)
validatorLineEdit.setValidator(validator)
self.setLayout(formlayout)
def initUI(self):
formLayout = QFormLayout()
intLine = QLineEdit()
doubletLine = QLineEdit()
validatortLine = QLineEdit()
formLayout.addRow("int", intLine)
formLayout.addRow("double", doubletLine)
formLayout.addRow("字母数字", validatortLine)
# int validator
intValidator = QIntValidator()
intValidator.setRange(1, 99)
# 浮点，小数点后两位
doubleValidator = QDoubleValidator()
doubleValidator.setRange(1, 99)
# doubleValidator.setNotation(QDoubleValidator.StandardNotation)
# 精度，小数点两位
doubleValidator.setDecimals(2)
# 数字字符
reg = QRegExp('[a-zA-Z0-9]+$')
validator = QRegExpValidator()
validator.setRegExp(reg)
intLine.setValidator(intValidator)
doubletLine.setValidator(doubleValidator)
validatortLine.setValidator(validator)
self.setLayout(formLayout)
def initUI(self):
self.setWindowTitle("校验器")
formlayout = QFormLayout()
INT = QLineEdit()
DOUBLE = QLineEdit()
REG = QLineEdit()
formlayout.addRow("整数类型", INT)
formlayout.addRow("浮点数", DOUBLE)
formlayout.addRow("数字和字母", REG)
INT.setPlaceholderText("整型")
DOUBLE.setPlaceholderText("浮点型")
REG.setPlaceholderText("字母和数字")
intvalidator = QIntValidator(self)
intvalidator.setRange(1, 99)
doublevalidator = QDoubleValidator(self)
doublevalidator.setRange(-360, 360)
doublevalidator.setNotation(QDoubleValidator.StandardNotation) #标准显示法
doublevalidator.setDecimals(2) #设置精度
reg = QRegExp('[a-zA-Z0-9]+$')
RegExpValidator = QRegExpValidator(self)
RegExpValidator.setRegExp(reg)
#设置校验器
INT.setValidator(intvalidator)
DOUBLE.setValidator(doublevalidator)
REG.setValidator(RegExpValidator)
self.setLayout(formlayout)
def init_lineedit_content(self):
# 入职前工作年限，格式应该为纯数字
double_valitor = QDoubleValidator()
double_valitor.setRange(0, 100)
double_valitor.setDecimals(1)
self.strongsuit.setValidator(double_valitor)
# 出生日期、雇佣日期，格式yyyy-MM-DD
reg = QRegExp('^[23][0-9]{3}-[0-9]{2}-[0-9]{2}$')
day_validator = QRegExpValidator()
day_validator.setRegExp(reg)
self.birthday.setValidator(day_validator)
self.entranceday.setValidator(day_validator)
# 匹配身份证
reg = QRegExp('^\d{17}(\d|X)$')
id_validator = QRegExpValidator()
id_validator.setRegExp(reg)
self.idno.setValidator(id_validator)
# 匹配电话号码，纯数字
reg = QRegExp('[0-9]{11}')
tel_validator = QRegExpValidator()
tel_validator.setRegExp(reg)
self.telno.setValidator(tel_validator)
def setUI(self):
self.setWindowTitle('校验器')
formLayout = QFormLayout()
intLineEdit = QLineEdit()
doubleLineEdit = QLineEdit()
validatorLineEdit = QLineEdit()
formLayout.addRow('整数类型', intLineEdit)
formLayout.addRow('浮点类型', doubleLineEdit)
formLayout.addRow('数字和字母', validatorLineEdit)
intLineEdit.setPlaceholderText('整形')
doubleLineEdit.setPlaceholderText('浮点型')
validatorLineEdit.setPlaceholderText('字母和数字')
#整数校验器
intValidator = QIntValidator(self)
intValidator.setRange(1, 99)
#浮点数校验器
doubleValidator = QDoubleValidator(self)
doubleValidator.setRange(-360, 360)
doubleValidator.setNotation(QDoubleValidator.StandardNotation)
#设置精度
doubleValidator.setDecimals(2)
#字母和数字
reg = QRegExp('[a-zA-z0-9]+$')
validator = QRegExpValidator(self)
validator.setRegExp(reg)
#设置校验器
intLineEdit.setValidator(intValidator)
doubleLineEdit.setValidator(doubleValidator)
validatorLineEdit.setValidator(validator)
self.setLayout(formLayout)
def set_validator(self):
intvalidator = QIntValidator()
intvalidator.setBottom(0)
self.lineEdit_precision.setValidator(intvalidator)
doublevalidator = QDoubleValidator()
doublevalidator.setRange(0, 100)
self.lineEdit_loss.setValidator(doublevalidator)
def initUI(self):
lineedit1 = QLineEdit()
lineedit2 = QLineEdit()
lineedit3 = QLineEdit()
# 整数验证
intValidator = QIntValidator(self)
# 如何1到111?
intValidator.setRange(1, 99)
# 正则验证
regvalidator = QRegExpValidator(self)
reg = QRegExp("^[A-Z][0-9]{2}$")
regvalidator.setRegExp(reg)
# 浮点型验证
doubleValidator = QDoubleValidator(self)
doubleValidator.setRange(-99, 99)
# 作用是什么
doubleValidator.setNotation(QDoubleValidator.StandardNotation)
doubleValidator.setDecimals(2)
lineedit1.setValidator(intValidator)
lineedit2.setValidator(regvalidator)
lineedit3.setValidator(doubleValidator)
lineedit2.setPlaceholderText('字母数字数字')
formlayout = QFormLayout()
formlayout.addRow('数字', lineedit1)
formlayout.addRow('正则', lineedit2)
formlayout.addRow('两位小数', lineedit3)
self.setLayout(formlayout)
def __init__(self, parent=None):
super(lineEditDemo, self).__init__(parent)
self.setWindowTitle('QLineEdit例子')
flo = QFormLayout()
pIntlineEdit = QLineEdit()
pDoublelineEdit = QLineEdit()
pValidatorlineEdit = QLineEdit()
flo.addRow('整型', pIntlineEdit)
flo.addRow('浮点型', pDoublelineEdit)
flo.addRow('字母、数字和下划线', pValidatorlineEdit)
pIntlineEdit.setPlaceholderText('整型')
pDoublelineEdit.setPlaceholderText('浮点型')
pValidatorlineEdit.setPlaceholderText('字母、数字和下划线')
pIntValidator = QIntValidator(self)
pIntValidator.setRange(0, 99)
pDoubleValidator = QDoubleValidator(self)
pDoubleValidator.setRange(-360, 360)
pDoubleValidator.setNotation(
QDoubleValidator.StandardNotation) # 分标准浮点记数和科学浮点记数
pDoubleValidator.setDecimals(2)
r = QRegExp(r'^[a-zA-Z0-9\_]+$')
pReValidator = QRegExpValidator(self)
pReValidator.setRegExp(r)
pIntlineEdit.setValidator(pIntValidator)
pDoublelineEdit.setValidator(pDoubleValidator)
pValidatorlineEdit.setValidator(pReValidator)
self.setLayout(flo)
def set_backamount_validator(self):
doublevalidator = QDoubleValidator()
try:
max_float = decimal.Decimal(self.lineEdit_restamount.text())
doublevalidator.setRange(0, max_float)
except decimal.InvalidOperation:
doublevalidator.setBottom(0)
self.lineEdit_backamount.setValidator(doublevalidator)
def set_valitor(self):
doublevalitor = QDoubleValidator()
try:
doublevalitor.setRange(0, self.item['amount'], 4)
except KeyError:
pass
doublevalitor.setNotation(QDoubleValidator.StandardNotation)
self.lineEdit_drawamount.setValidator(doublevalitor)
def settings(self):
doubleValidator1 = QDoubleValidator(self)
doubleValidator1.setRange(0, 500000)
doubleValidator2 = QDoubleValidator(self)
doubleValidator2.setRange(0, 1)
self.maxvolume_A.setValidator(doubleValidator1)
self.maxvolume_B.setValidator(doubleValidator1)
self.pump_rate_A.setValidator(doubleValidator2)
self.pump_rate_B.setValidator(doubleValidator2)
def set_restamount_validator(self):
doublevalidator = QDoubleValidator()
try:
max_float = self.ori_detail['drawamount']
pracamount = decimal.Decimal(self.lineEdit_pracamount.text())
doublevalidator.setRange(0, max_float - pracamount)
except (KeyError, decimal.InvalidOperation):
doublevalidator.setBottom(0)
self.lineEdit_restamount.setValidator(doublevalidator)
def __init__(self, parent=None):
super(lineEditDemo, self).__init__(parent)
self.setWindowTitle('QLineEdit例子')
#实例化表单布局
flo = QFormLayout()
#创建三个文本框
pIntLineEdit = QLineEdit()
pDoubleLineEdit = QLineEdit()
pValidatorLineEdit = QLineEdit()
#表单布局添加名称及控件
flo.addRow('整型', pIntLineEdit)
flo.addRow('浮点型', pDoubleLineEdit)
flo.addRow('字母和数字', pValidatorLineEdit)
#设置文本框的默认浮现文本
pIntLineEdit.setPlaceholderText('整型')
pDoubleLineEdit.setPlaceholderText('浮点型')
pValidatorLineEdit.setPlaceholderText('字母和数字')
#整型 范围 【1-99】
#实例化整型验证器，并设置范围为1-99
pIntvalidator = QIntValidator(self)
pIntvalidator.setRange(1, 999999)
#浮点型 范围 【-360,360】，精度 小数点后两位
#实例化浮点验证器，设置范围-360到360
pDoubleValidator = QDoubleValidator()
pDoubleValidator.setRange(-3600, 3600)
pDoubleValidator.setNotation(QDoubleValidator.StandardNotation)
#设置精度小数点后两位
pDoubleValidator.setDecimals(2)
#字母和数字
#设置文本允许出现的字符内容
reg = QRegExp('[a-zA-Z0-9]+$')
#自定义文本验证器
pValidator = QRegExpValidator(self)
#设置属性
pValidator.setRegExp(reg)
#设置验证器
pIntLineEdit.setValidator(pIntvalidator)
pDoubleLineEdit.setValidator(pDoubleValidator)
pValidatorLineEdit.setValidator(pValidator)
self.setLayout(flo)
def set_pracamount_validator(self):
doublevalidator = QDoubleValidator()
try:
max_float = self.ori_detail['drawamount']
doublevalidator.setRange(0, max_float)
except KeyError:
doublevalidator.setBottom(0)
self.lineEdit_pracamount.setValidator(doublevalidator)
doubleValitor = QDoubleValidator()
doubleValitor.setRange(-360, 360)
doubleValitor.setDecimals(2)
doubleValitor.setNotation(QDoubleValidator.StandardNotation)
def initUI(self):
self.setWindowTitle('QLineEdit控件的校验器')
# 创建表单布局对象
formLayout = QFormLayout()
# 创建三个QLineEdit控件
intLineEdit = QLineEdit()
doubleLineEdit = QLineEdit()
validatorLineEdit = QLineEdit()
# 将控件添加到布局中
formLayout.addRow('整数类型', intLineEdit)
formLayout.addRow('浮点类型', doubleLineEdit)
formLayout.addRow('字母和数字(正则表达式)', validatorLineEdit)
# 为QLineEdit控添默认提示内容
intLineEdit.setPlaceholderText('整数')
doubleLineEdit.setPlaceholderText('浮点')
validatorLineEdit.setPlaceholderText('字母和数字')
"""
1.设置整数校验器(只能输入[1,99]之间的整数)
"""
# 创建QDoubleValidator校验器对象
intValidator = QIntValidator(self)
# 设置校验范围
intValidator.setRange(1, 99)
"""
2.设置浮点校验器(只能输入[-99.xx,99.xx]，精度要求保留小数点后2位)
"""
# 创建QDoubleValidator校验器对象
doubleValidator = QDoubleValidator(self)
# 设置校验范围
doubleValidator.setRange(-99, 99)
# 正常显示浮点数
doubleValidator.setNotation(QDoubleValidator.StandardNotation)
# 设置精度，保留小数点后两位
doubleValidator.setDecimals(2)
"""
3.设置字母和数字(正则表达式)校验器
"""
# 正则表达式
reg = QRegExp('[a-zA-Z0-9]+$')
# 正则表达式校验器
validator = QRegExpValidator(self)
# 将正则表达式和正则表达式校验器绑定到一起
validator.setRegExp(reg)
"""
设置校验器：绑定校验器和控件
"""
intLineEdit.setValidator(intValidator)
doubleLineEdit.setValidator(doubleValidator)
validatorLineEdit.setValidator(validator)
# 应用表单布局
self.setLayout(formLayout)
def __init__(self, parent=None):
super(lineEditDemo, self).__init__(parent)
self.setWindowTitle("QLineEdit例子")
flo = QFormLayout()
pIntLineEdit = QLineEdit( )
pDoubleLineEdit = QLineEdit()
pValidatorLineEdit = QLineEdit( )
flo.addRow("整形", pIntLineEdit)
flo.addRow("浮点型", pDoubleLineEdit)
flo.addRow("字母和数字", pValidatorLineEdit)
pIntLineEdit.setPlaceholderText("整形");
pDoubleLineEdit.setPlaceholderText("浮点型");
pValidatorLineEdit.setPlaceholderText("字母和数字");
# 整形 范围：[1, 99]
pIntValidator = QIntValidator(self)
pIntValidator.setRange(1, 99)
# 浮点型 范围：[-360, 360] 精度：小数点后2位
pDoubleValidator = QDoubleValidator(self)
pDoubleValidator.setRange(-360, 360)
pDoubleValidator.setNotation(QDoubleValidator.StandardNotation)
pDoubleValidator.setDecimals(2)
# 字符和数字
reg = QRegExp("[a-zA-Z0-9]+$")
pValidator = QRegExpValidator(self)
pValidator.setRegExp(reg)
# 设置验证器
pIntLineEdit.setValidator(pIntValidator)
pDoubleLineEdit.setValidator(pDoubleValidator)
pValidatorLineEdit.setValidator(pValidator)
self.setLayout(flo)
