Python QButtonGroup.setExclusive方法代码示例

# 需要导入模块: from qgis.PyQt.QtWidgets import QButtonGroup [as 别名]
# 或者: from qgis.PyQt.QtWidgets.QButtonGroup import setExclusive [as 别名]
class CheckboxesPanel(QWidget):

    def __init__(self, options, multiple, columns=2, parent=None):
        super(CheckboxesPanel, self).__init__(parent)

        self._options = []
        for i, option in enumerate(options):
            if isinstance(option, str):
                self._options.append((i, option))
            else:
                self.options.append(option)
        self._multiple = multiple
        self._buttons = []
        rows = len(options) / columns

        self._buttonGroup = QButtonGroup()
        self._buttonGroup.setExclusive(not multiple)
        layout = QGridLayout()
        layout.setContentsMargins(0, 0, 0, 0)
        layout.setMargin(0)
        for i, (v, t) in enumerate(self._options):
            if multiple:
                button = QCheckBox(t)
            else:
                button = QRadioButton(t)
            self._buttons.append((v, button))
            self._buttonGroup.addButton(button, i)
            layout.addWidget(button, i % rows, i / rows)
        layout.addItem(QSpacerItem(0, 0, QSizePolicy.Expanding, QSizePolicy.Minimum),
                       0, columns)
        self.setLayout(layout)

        if multiple:
            self.setContextMenuPolicy(Qt.CustomContextMenu)
            self.customContextMenuRequested.connect(self.showPopupMenu)

    def showPopupMenu(self):
        popup_menu = QMenu()
        select_all_action = QAction(self.tr('Select All'), popup_menu)
        select_all_action.triggered.connect(self.selectAll)
        clear_all_action = QAction(self.tr('Clear Selection'), popup_menu)
        clear_all_action.triggered.connect(self.deselectAll)
        popup_menu.addAction(select_all_action)
        popup_menu.addAction(clear_all_action)
        popup_menu.exec_(QCursor.pos())

    def selectAll(self):
        for (v, button) in self._buttons:
            button.setChecked(True)

    def deselectAll(self):
        for (v, button) in self._buttons:
            button.setChecked(False)

    def value(self):
        if self._multiple:
            value = []
            for (v, checkbox) in self._buttons:
                if checkbox.isChecked():
                    value.append(v)
            return value
        else:
            return self._options[self._buttonGroup.checkedId()][0]

    def setValue(self, value):
        if self._multiple:
            for (v, button) in self._buttons:
                if v in value:
                    button.setChecked(True)
        else:
            for v, button in self._buttons:
                if v == value:
                    button.setChecked(True)

# 需要导入模块: from qgis.PyQt.QtWidgets import QButtonGroup [as 别名]
# 或者: from qgis.PyQt.QtWidgets.QButtonGroup import setExclusive [as 别名]
class PetaBencanaDialog(QDialog, FORM_CLASS):

    """Downloader for PetaBencana data.

    .. versionadded: 3.3
    """

    def __init__(self, parent=None, iface=None):
        """Constructor for import dialog.

        .. versionadded: 3.3

        :param parent: Optional widget to use as parent.
        :type parent: QWidget

        :param iface: An instance of QgisInterface.
        :type iface: QgisInterface
        """
        QDialog.__init__(self, parent)
        self.parent = parent
        self.setupUi(self)

        title = self.tr('PetaBencana Downloader')
        self.setWindowTitle(title)
        icon = resources_path('img', 'icons', 'add-petabencana-layer.svg')
        self.setWindowIcon(QtGui.QIcon(icon))

        self.iface = iface

        self.source = None

        self.radio_button_group = QButtonGroup()
        self.radio_button_group.addButton(self.radio_button_production)
        self.radio_button_group.addButton(self.radio_button_development)

        self.radio_button_group.setExclusive(True)
        self.radio_button_production.setChecked(True)
        self.populate_combo_box()

        developer_mode = setting('developer_mode', False, bool)
        if not developer_mode:
            self.radio_button_widget.hide()
            self.source_label.hide()
            self.output_group.adjustSize()

        # signals
        self.radio_button_production.clicked.connect(self.populate_combo_box)
        self.radio_button_development.clicked.connect(self.populate_combo_box)

        # Set up things for context help
        self.help_button = self.button_box.button(
            QtWidgets.QDialogButtonBox.Help)
        # Allow toggling the help button
        self.help_button.setCheckable(True)
        self.help_button.toggled.connect(self.help_toggled)
        self.main_stacked_widget.setCurrentIndex(1)

        # set up the validator for the file name prefix
        expression = QRegExp('^[A-Za-z0-9-_]*$')
        validator = QtGui.QRegExpValidator(expression, self.filename_prefix)
        self.filename_prefix.setValidator(validator)
        self.time_stamp = None
        self.restore_state()

    @pyqtSlot(bool)  # prevents actions being handled twice
    def help_toggled(self, flag):
        """Show or hide the help tab in the stacked widget.

        .. versionadded: 3.3

        :param flag: Flag indicating whether help should be shown or hidden.
        :type flag: bool
        """
        if flag:
            self.help_button.setText(self.tr('Hide Help'))
            self.show_help()
        else:
            self.help_button.setText(self.tr('Show Help'))
            self.hide_help()

    def hide_help(self):
        """Hide the usage info from the user.

        .. versionadded:: 3.3
        """
        self.main_stacked_widget.setCurrentIndex(1)

    def show_help(self):
        """Show usage info to the user.

        .. versionadded: 3.3
        """
        # Read the header and footer html snippets
        self.main_stacked_widget.setCurrentIndex(0)
        header = html_header()
        footer = html_footer()

        string = header

        message = peta_bencana_help()
#.........这里部分代码省略.........