Python qtpy.QtWidgets.QLineEdit() Examples

def _resize_axis_labels(self):
        """When any of the labels get updated, this method updates all label
        widths to the width of the longest label. This keeps the sliders
        left-aligned and allows the full label to be visible at all times,
        with minimal space, without setting stretch on the layout.
        """
        fm = QFontMetrics(QFont("", 0))
        labels = self.findChildren(QLineEdit, 'axis_label')
        newwidth = max([fm.boundingRect(lab.text()).width() for lab in labels])

        if any(self._displayed_sliders):
            # set maximum width to no more than 20% of slider width
            maxwidth = self.slider_widgets[0].width() * 0.2
            newwidth = min([newwidth, maxwidth])
        for labl in labels:
            labl.setFixedWidth(newwidth + 10) 

def __init__(self):
        """ Like a QSpinBox for number import, but without min or max range or a fixed resolution.
        Especially important for the limits of logarithmic plots.

        Attributes:
            send_signal : Whether to currently emit the valueChanged signal or not (to prevent the signal from being
                emitted when the value is set by script.
            valueChanged : a signal that is emitted when the value is changed by the user
        """
        QtWidgets.QLineEdit.__init__(self)
        self.textChanged.connect(self.emitValueChanged) 

def __init__(self, layout: QtWidgets.QLayout, text: str, multiline: bool = False, horizontal: bool = True):
        """ a text input widget with a label.

        Args:
            layout: the layout to which to add the widget
            text: the label text
            multiline: whether the text input should be a single line or not
            horizontal:  whether the layout should be left or above the input
        """
        QtWidgets.QWidget.__init__(self)
        layout.addWidget(self)
        if horizontal:
            self.layout = QtWidgets.QHBoxLayout(self)
        else:
            self.layout = QtWidgets.QVBoxLayout(self)
        self.label = QtWidgets.QLabel(text)
        self.layout.addWidget(self.label)
        self.layout.setContentsMargins(0, 0, 0, 0)

        self.multiline = multiline
        if multiline:
            self.input1 = QtWidgets.QTextEdit()
            self.input1.textChanged.connect(self.valueChangeEvent)
            self.input1.text = self.input1.toPlainText
        else:
            self.input1 = QtWidgets.QLineEdit()
            self.input1.editingFinished.connect(self.valueChangeEvent)
        self.layout.addWidget(self.input1) 

def setRevisionTableColumn(self, row, column, value, icon=None, isLongText=False):
        value = str(value)

        widget = QtWidgets.QWidget()
        layout = QtWidgets.QHBoxLayout()
        layout.setAlignment(QtCore.Qt.AlignLeft | QtCore.Qt.AlignHCenter)

        # Use a QLineEdit to allow the text to be copied if the data is large
        if isLongText:
            textLabel = QtWidgets.QLineEdit()
            textLabel.setText(value)
            textLabel.setCursorPosition(0)
            textLabel.setReadOnly(True)
            textLabel.setStyleSheet("QLineEdit { border: none }")
        else:
            textLabel = QtWidgets.QLabel(value)
            textLabel.setStyleSheet("QLabel { border: none } ")

        # layout.setContentsMargins(4, 0, 4, 0)
        
        if icon:
            iconPic = QtGui.QPixmap(icon)
            iconPic = iconPic.scaled(16, 16)
            iconLabel = QtWidgets.QLabel()
            iconLabel.setPixmap(iconPic)
            layout.addWidget(iconLabel)
        layout.addWidget(textLabel)

        widget.setLayout(layout)

        self.tableWidget.setCellWidget(row, column, widget) 

def setRevisionTableColumn(self, row, column, value, icon=None, isLongText=False):
        value = str(value)

        widget = QtWidgets.QWidget()
        layout = QtWidgets.QHBoxLayout()
        layout.setAlignment(QtCore.Qt.AlignLeft | QtCore.Qt.AlignHCenter)

        # Use a QLineEdit to allow the text to be copied if the data is large
        if isLongText:
            textLabel = QtWidgets.QLineEdit()
            textLabel.setText(value)
            textLabel.setCursorPosition(0)
            textLabel.setReadOnly(True)
            textLabel.setStyleSheet("QLineEdit { border: none }")
        else:
            textLabel = QtWidgets.QLabel(value)
            textLabel.setStyleSheet("QLabel { border: none } ")

        # layout.setContentsMargins(4, 0, 4, 0)
        
        if icon:
            iconPic = QtGui.QPixmap(icon)
            iconPic = iconPic.scaled(16, 16)
            iconLabel = QtWidgets.QLabel()
            iconLabel.setPixmap(iconPic)
            layout.addWidget(iconLabel)
        layout.addWidget(textLabel)

        widget.setLayout(layout)

        self.tableWidget.setCellWidget(row, column, widget) 

def make_layout(self):
        self.lay = QtWidgets.QHBoxLayout()
        self.lay.setContentsMargins(0,0,0,0)
        self.lay.setSpacing(0)
        self.setLayout(self.lay)
        if self.labeltext is not None:
            self.label = QtWidgets.QLabel(self.labeltext)
            self.lay.addWidget(self.label)
        if self.log_increment:
            self.up = QtWidgets.QPushButton('*')
            self.down = QtWidgets.QPushButton('/')
        else:
            self.up = QtWidgets.QPushButton('+')
            self.down = QtWidgets.QPushButton('-')
        self.line = QtWidgets.QLineEdit()
        self.line.setStyleSheet("QLineEdit { qproperty-cursorPosition: 0; }") # align text on the left
        # http://stackoverflow.com/questions/18662157/qt-qlineedit-widget-to-get-long-text-left-aligned
        self.lay.addWidget(self.down)
        self.lay.addWidget(self.line)
        self.lay.addWidget(self.up)
        self.up.setMaximumWidth(15)
        self.down.setMaximumWidth(15)
        self.up.pressed.connect(self.first_step)
        self.down.pressed.connect(self.first_step)
        self.up.released.connect(self.finish_step)
        self.down.released.connect(self.finish_step)
        self.line.editingFinished.connect(self.validate)
        self._button_up_down = False
        self._button_down_down = False

    # keyboard interface 

def _make_widget(self):
        self.widget = QtWidgets.QLineEdit()
        self.widget.setMaximumWidth(200)
        self.widget.textChanged.connect(self.write_widget_value_to_attribute) 

def __init__(self, parent):
        super(AnalogTfDialog, self).__init__(parent)
        self.parent = parent
        self.module = self.parent.module
        self.setWindowTitle("Analog transfer function for output %s" % self.module.name)
        self.lay_v = QtWidgets.QVBoxLayout(self)
        self.lay_h = QtWidgets.QHBoxLayout()
        self.ok = QtWidgets.QPushButton('Ok')
        self.lay_h.addWidget(self.ok)
        self.ok.clicked.connect(self.validate)
        self.cancel = QtWidgets.QPushButton('Cancel')
        self.lay_h.addWidget(self.cancel)
        self.group = QtWidgets.QButtonGroup()
        self.flat = QtWidgets.QRadioButton("Flat response")
        self.filter = QtWidgets.QRadioButton('Analog low-pass filter (as in "Pid control/assisted design/actuator cut-off")')
        self.curve = QtWidgets.QRadioButton("User-defined curve")
        self.group.addButton(self.flat)
        self.group.addButton(self.filter)
        self.group.addButton(self.curve)

        self.lay_v.addWidget(self.flat)
        self.lay_v.addWidget(self.filter)
        self.lay_v.addWidget(self.curve)
        self.label = QtWidgets.QLabel("Curve #")
        self.line = QtWidgets.QLineEdit("coucou")

        self.lay_line = QtWidgets.QHBoxLayout()
        self.lay_v.addLayout(self.lay_line)
        self.lay_v.addWidget(self.line)
        self.lay_line.addStretch(1)
        self.lay_line.addWidget(self.label)
        self.lay_line.addWidget(self.line, stretch=10)
        self.lay_v.addSpacing(20)
        self.lay_v.addLayout(self.lay_h)
        self.curve.toggled.connect(self.change_visibility)
        {'flat':self.flat, 'filter':self.filter, 'curve':self.curve}[self.module.tf_type].setChecked(True)

        self.line.setText(str(self.module.tf_curve))
        self.line.textEdited.connect(lambda: self.line.setStyleSheet(""))
        self.cancel.clicked.connect(self.reject)
        self.curve_id = None
        self.res = None