コード例 #1
0
class PluginListItem(QFrame):
    def __init__(
        self,
        package_name: str,
        version: str = '',
        url: str = '',
        summary: str = '',
        author: str = '',
        license: str = "UNKNOWN",
        *,
        plugin_name: str = None,
        parent: QWidget = None,
        enabled: bool = True,
        installed: bool = False,
        npe_version=1,
    ):
        super().__init__(parent)
        self.setup_ui(enabled)
        self.plugin_name.setText(package_name)
        self.package_name.setText(version)
        self.summary.setText(summary)
        self.package_author.setText(author)
        self.cancel_btn.setVisible(False)

        self.help_button.setText(trans._("Website"))
        self.help_button.setObjectName("help_button")
        if npe_version != 1:
            self._handle_npe2_plugin()

        if installed:
            self.enabled_checkbox.show()
            self.action_button.setText(trans._("uninstall"))
            self.action_button.setObjectName("remove_button")
        else:
            self.enabled_checkbox.hide()
            self.action_button.setText(trans._("install"))
            self.action_button.setObjectName("install_button")

    def _handle_npe2_plugin(self):
        npe2_icon = QLabel(self)
        icon = QColoredSVGIcon.from_resources('logo_silhouette')
        npe2_icon.setPixmap(icon.colored(color='#33F0FF').pixmap(20, 20))
        self.row1.insertWidget(2, QLabel('npe2'))
        self.row1.insertWidget(2, npe2_icon)

    def _get_dialog(self) -> QDialog:
        p = self.parent()
        while not isinstance(p, QDialog) and p.parent():
            p = p.parent()
        return p

    def set_busy(self, text: str, update: bool = False):
        self.item_status.setText(text)
        self.cancel_btn.setVisible(True)
        if not update:
            self.action_button.setVisible(False)
        else:
            self.update_btn.setVisible(False)

    def setup_ui(self, enabled=True):
        self.v_lay = QVBoxLayout(self)
        self.v_lay.setContentsMargins(-1, 6, -1, 6)
        self.v_lay.setSpacing(0)
        self.row1 = QHBoxLayout()
        self.row1.setSpacing(6)
        self.enabled_checkbox = QCheckBox(self)
        self.enabled_checkbox.setChecked(enabled)
        self.enabled_checkbox.stateChanged.connect(self._on_enabled_checkbox)
        self.enabled_checkbox.setToolTip(trans._("enable/disable"))
        sizePolicy = QSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(
            self.enabled_checkbox.sizePolicy().hasHeightForWidth())
        self.enabled_checkbox.setSizePolicy(sizePolicy)
        self.enabled_checkbox.setMinimumSize(QSize(20, 0))
        self.enabled_checkbox.setText("")
        self.row1.addWidget(self.enabled_checkbox)
        self.plugin_name = QLabel(self)
        sizePolicy = QSizePolicy(QSizePolicy.Preferred, QSizePolicy.Minimum)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(
            self.plugin_name.sizePolicy().hasHeightForWidth())
        self.plugin_name.setSizePolicy(sizePolicy)
        font15 = QFont()
        font15.setPointSize(15)
        self.plugin_name.setFont(font15)
        self.row1.addWidget(self.plugin_name)

        icon = QColoredSVGIcon.from_resources("warning")
        self.warning_tooltip = QtToolTipLabel(self)
        # TODO: This color should come from the theme but the theme needs
        # to provide the right color. Default warning should be orange, not
        # red. Code example:
        # theme_name = get_settings().appearance.theme
        # napari.utils.theme.get_theme(theme_name, as_dict=False).warning.as_hex()
        self.warning_tooltip.setPixmap(
            icon.colored(color="#E3B617").pixmap(15, 15))
        self.warning_tooltip.setVisible(False)
        self.row1.addWidget(self.warning_tooltip)

        self.item_status = QLabel(self)
        self.item_status.setObjectName("small_italic_text")
        self.item_status.setSizePolicy(sizePolicy)
        self.row1.addWidget(self.item_status)
        self.row1.addStretch()

        self.package_name = QLabel(self)
        self.package_name.setAlignment(Qt.AlignRight | Qt.AlignTrailing
                                       | Qt.AlignVCenter)
        self.row1.addWidget(self.package_name)

        self.cancel_btn = QPushButton("cancel", self)
        self.cancel_btn.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
        self.cancel_btn.setObjectName("remove_button")
        self.row1.addWidget(self.cancel_btn)

        self.update_btn = QPushButton(self)
        self.update_btn.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
        self.update_btn.setObjectName("install_button")
        self.row1.addWidget(self.update_btn)
        self.update_btn.setVisible(False)
        self.help_button = QPushButton(self)
        self.action_button = QPushButton(self)
        sizePolicy = QSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(
            self.action_button.sizePolicy().hasHeightForWidth())
        self.help_button.setSizePolicy(sizePolicy)
        self.action_button.setSizePolicy(sizePolicy)
        self.row1.addWidget(self.help_button)
        self.row1.addWidget(self.action_button)
        self.v_lay.addLayout(self.row1)
        self.row2 = QHBoxLayout()
        self.error_indicator = QPushButton()
        self.error_indicator.setObjectName("warning_icon")
        self.error_indicator.setCursor(Qt.PointingHandCursor)
        self.error_indicator.hide()
        self.row2.addWidget(self.error_indicator)
        self.row2.setContentsMargins(-1, 4, 0, -1)
        self.summary = QElidingLabel(parent=self)
        sizePolicy = QSizePolicy(QSizePolicy.MinimumExpanding,
                                 QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(
            self.summary.sizePolicy().hasHeightForWidth())
        self.summary.setSizePolicy(sizePolicy)
        self.summary.setObjectName("small_text")
        self.row2.addWidget(self.summary)
        self.package_author = QLabel(self)
        sizePolicy = QSizePolicy(QSizePolicy.Preferred, QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(
            self.package_author.sizePolicy().hasHeightForWidth())
        self.package_author.setSizePolicy(sizePolicy)
        self.package_author.setObjectName("small_text")
        self.row2.addWidget(self.package_author)
        self.v_lay.addLayout(self.row2)

    def _on_enabled_checkbox(self, state: int):
        """Called with `state` when checkbox is clicked."""
        enabled = bool(state)
        plugin_name = self.plugin_name.text()
        pm2 = PluginManager.instance()
        if plugin_name in pm2:
            pm2.enable(plugin_name) if state else pm2.disable(plugin_name)
            return

        for npe1_name, _, distname in plugin_manager.iter_available():
            if distname and (distname == plugin_name):
                plugin_manager.set_blocked(npe1_name, not enabled)

    def show_warning(self, message: str = ""):
        """Show warning icon and tooltip."""
        self.warning_tooltip.setVisible(bool(message))
        self.warning_tooltip.setToolTip(message)
コード例 #2
0
ファイル: qt_plugin_dialog.py プロジェクト: guiwitz/napari
class PluginListItem(QFrame):
    def __init__(
        self,
        package_name: str,
        version: str = '',
        url: str = '',
        summary: str = '',
        author: str = '',
        license: str = "UNKNOWN",
        *,
        plugin_name: str = None,
        parent: QWidget = None,
        enabled: bool = True,
        installed: bool = False,
        npe_version=1,
    ):
        super().__init__(parent)
        self.setup_ui(enabled)
        self.plugin_name.setText(package_name)
        self.package_name.setText(version)
        self.summary.setText(summary)
        self.package_author.setText(author)
        self.cancel_btn.setVisible(False)

        self.help_button.setText(trans._("Website"))
        self.help_button.setObjectName("help_button")
        if npe_version != 1:
            self.enabled_checkbox.setEnabled(False)

        if installed:
            self.enabled_checkbox.show()
            self.action_button.setText(trans._("uninstall"))
            self.action_button.setObjectName("remove_button")
        else:
            self.enabled_checkbox.hide()
            self.action_button.setText(trans._("install"))
            self.action_button.setObjectName("install_button")

    def _get_dialog(self) -> QDialog:
        p = self.parent()
        while not isinstance(p, QDialog) and p.parent():
            p = p.parent()
        return p

    def set_busy(self, text: str, update: bool = False):
        self.item_status.setText(text)
        self.cancel_btn.setVisible(True)
        if not update:
            self.action_button.setVisible(False)
        else:
            self.update_btn.setVisible(False)

    def setup_ui(self, enabled=True):
        self.v_lay = QVBoxLayout(self)
        self.v_lay.setContentsMargins(-1, 6, -1, 6)
        self.v_lay.setSpacing(0)
        self.row1 = QHBoxLayout()
        self.row1.setSpacing(6)
        self.enabled_checkbox = QCheckBox(self)
        self.enabled_checkbox.setChecked(enabled)
        self.enabled_checkbox.stateChanged.connect(self._on_enabled_checkbox)
        self.enabled_checkbox.setToolTip(trans._("enable/disable"))
        sizePolicy = QSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(
            self.enabled_checkbox.sizePolicy().hasHeightForWidth()
        )
        self.enabled_checkbox.setSizePolicy(sizePolicy)
        self.enabled_checkbox.setMinimumSize(QSize(20, 0))
        self.enabled_checkbox.setText("")
        self.row1.addWidget(self.enabled_checkbox)
        self.plugin_name = QLabel(self)
        sizePolicy = QSizePolicy(QSizePolicy.Preferred, QSizePolicy.Minimum)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(
            self.plugin_name.sizePolicy().hasHeightForWidth()
        )
        self.plugin_name.setSizePolicy(sizePolicy)
        font15 = QFont()
        font15.setPointSize(15)
        self.plugin_name.setFont(font15)
        self.row1.addWidget(self.plugin_name)

        self.item_status = QLabel(self)
        self.item_status.setObjectName("small_italic_text")
        self.item_status.setSizePolicy(sizePolicy)
        self.row1.addWidget(self.item_status)
        self.row1.addStretch()

        self.package_name = QLabel(self)
        self.package_name.setAlignment(
            Qt.AlignRight | Qt.AlignTrailing | Qt.AlignVCenter
        )
        self.row1.addWidget(self.package_name)

        self.cancel_btn = QPushButton("cancel", self)
        self.cancel_btn.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
        self.cancel_btn.setObjectName("remove_button")
        self.row1.addWidget(self.cancel_btn)

        self.update_btn = QPushButton(self)
        self.update_btn.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
        self.update_btn.setObjectName("install_button")
        self.row1.addWidget(self.update_btn)
        self.update_btn.setVisible(False)
        self.help_button = QPushButton(self)
        self.action_button = QPushButton(self)
        sizePolicy = QSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(
            self.action_button.sizePolicy().hasHeightForWidth()
        )
        self.help_button.setSizePolicy(sizePolicy)
        self.action_button.setSizePolicy(sizePolicy)
        self.row1.addWidget(self.help_button)
        self.row1.addWidget(self.action_button)
        self.v_lay.addLayout(self.row1)
        self.row2 = QHBoxLayout()
        self.error_indicator = QPushButton()
        self.error_indicator.setObjectName("warning_icon")
        self.error_indicator.setCursor(Qt.PointingHandCursor)
        self.error_indicator.hide()
        self.row2.addWidget(self.error_indicator)
        self.row2.setContentsMargins(-1, 4, 0, -1)
        self.summary = QElidingLabel(parent=self)
        sizePolicy = QSizePolicy(
            QSizePolicy.MinimumExpanding, QSizePolicy.Preferred
        )
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(
            self.summary.sizePolicy().hasHeightForWidth()
        )
        self.summary.setSizePolicy(sizePolicy)
        self.summary.setObjectName("small_text")
        self.row2.addWidget(self.summary)
        self.package_author = QLabel(self)
        sizePolicy = QSizePolicy(QSizePolicy.Preferred, QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(
            self.package_author.sizePolicy().hasHeightForWidth()
        )
        self.package_author.setSizePolicy(sizePolicy)
        self.package_author.setObjectName("small_text")
        self.row2.addWidget(self.package_author)
        self.v_lay.addLayout(self.row2)

    def _on_enabled_checkbox(self, state: int):
        """Called with `state` when checkbox is clicked."""
        enabled = bool(state)
        current_distname = self.plugin_name.text()
        for plugin_name, _, distname in plugin_manager.iter_available():
            if distname and distname == current_distname:
                plugin_manager.set_blocked(plugin_name, not enabled)
コード例 #3
0
ファイル: qt_plugin_sorter.py プロジェクト: tlambert03/napari
class ImplementationListItem(QFrame):
    """A Widget to render each hook implementation item in a ListWidget.

    Parameters
    ----------
    item : QListWidgetItem
        An item instance from a QListWidget. This will most likely come from
        :meth:`QtHookImplementationListWidget.add_hook_implementation_to_list`.
    parent : QWidget, optional
        The parent widget, by default None

    Attributes
    ----------
    plugin_name_label : QLabel
        The name of the plugin providing the hook implementation.
    enabled_checkbox : QCheckBox
        Checkbox to set the ``enabled`` status of the corresponding hook
        implementation.
    opacity : QGraphicsOpacityEffect
        The opacity of the whole widget.  When self.enabled_checkbox is
        unchecked, the opacity of the item is decreased.
    """

    on_changed = Signal()  # when user changes whether plugin is enabled.

    def __init__(self, item: QListWidgetItem, parent: QWidget = None):
        super().__init__(parent)
        self.item = item
        self.opacity = QGraphicsOpacityEffect(self)
        self.setGraphicsEffect(self.opacity)
        layout = QHBoxLayout()
        self.setLayout(layout)

        self.position_label = QLabel()
        self.update_position_label()

        self.setToolTip(trans._("Click and drag to change call order"))
        self.plugin_name_label = QElidingLabel()
        self.plugin_name_label.setObjectName('small_text')
        self.plugin_name_label.setText(item.hook_implementation.plugin_name)
        plugin_name_size_policy = QSizePolicy(QSizePolicy.MinimumExpanding,
                                              QSizePolicy.Preferred)
        plugin_name_size_policy.setHorizontalStretch(2)
        self.plugin_name_label.setSizePolicy(plugin_name_size_policy)

        self.function_name_label = QLabel(
            item.hook_implementation.function.__name__)

        self.enabled_checkbox = QCheckBox(self)
        self.enabled_checkbox.setToolTip(
            trans._("Uncheck to disable this plugin"))
        self.enabled_checkbox.stateChanged.connect(self._set_enabled)
        self.enabled_checkbox.setChecked(
            getattr(item.hook_implementation, 'enabled', True))
        layout.addWidget(self.position_label)
        layout.addWidget(self.enabled_checkbox)
        layout.addWidget(self.function_name_label)
        layout.addWidget(self.plugin_name_label)
        layout.setStretch(2, 1)
        layout.setContentsMargins(0, 0, 0, 0)

    def _set_enabled(self, state: Union[bool, int]):
        """Set the enabled state of this hook implementation to ``state``."""
        self.item.hook_implementation.enabled = bool(state)
        self.opacity.setOpacity(1 if state else 0.5)
        self.on_changed.emit()

    def update_position_label(self, order=None):
        """Update the label showing the position of this item in the list.

        Parameters
        ----------
        order : list, optional
            A HookOrderType list ... unused by this function, but here for ease
            of signal connection, by default None.
        """
        position = self.item.listWidget().indexFromItem(self.item).row() + 1
        self.position_label.setText(str(position))
コード例 #4
0
class NapariQtNotification(QDialog):
    """Notification dialog frame, appears at the bottom right of the canvas.

    By default, only the first line of the notification is shown, and the text
    is elided.  Double-clicking on the text (or clicking the chevron icon) will
    expand to show the full notification.  The dialog will autmatically
    disappear in ``DISMISS_AFTER`` milliseconds, unless hovered or clicked.

    Parameters
    ----------
    message : str
        The message that will appear in the notification
    severity : str or NotificationSeverity, optional
        Severity level {'error', 'warning', 'info', 'none'}.  Will determine
        the icon associated with the message.
        by default NotificationSeverity.WARNING.
    source : str, optional
        A source string for the notifcation (intended to show the module and
        or package responsible for the notification), by default None
    actions : list of tuple, optional
        A sequence of 2-tuples, where each tuple is a string and a callable.
        Each tuple will be used to create button in the dialog, where the text
        on the button is determine by the first item in the tuple, and a
        callback function to call when the button is pressed is the second item
        in the tuple. by default ()
    """

    MAX_OPACITY = 0.9
    FADE_IN_RATE = 220
    FADE_OUT_RATE = 120
    DISMISS_AFTER = 4000
    MIN_WIDTH = 400
    MIN_EXPANSION = 18

    message: QElidingLabel
    source_label: QLabel
    severity_icon: QLabel

    def __init__(
            self,
            message: str,
            severity: Union[str, NotificationSeverity] = 'WARNING',
            source: Optional[str] = None,
            actions: ActionSequence = (),
    ):
        super().__init__()

        from ..qt_main_window import _QtMainWindow

        current_window = _QtMainWindow.current()
        if current_window is not None:
            canvas = current_window._qt_viewer._canvas_overlay
            self.setParent(canvas)
            canvas.resized.connect(self.move_to_bottom_right)

        self.setupUi()
        self.setAttribute(Qt.WA_DeleteOnClose)
        self.setup_buttons(actions)
        self.setMouseTracking(True)

        self._update_icon(str(severity))
        self.message.setText(message)
        if source:
            self.source_label.setText(
                trans._('Source: {source}', source=source))

        self.close_button.clicked.connect(self.close)
        self.expand_button.clicked.connect(self.toggle_expansion)

        self.timer = QTimer()
        self.opacity = QGraphicsOpacityEffect()
        self.setGraphicsEffect(self.opacity)
        self.opacity_anim = QPropertyAnimation(self.opacity, b"opacity", self)
        self.geom_anim = QPropertyAnimation(self, b"geometry", self)
        self.move_to_bottom_right()

    def _update_icon(self, severity: str):
        """Update the icon to match the severity level."""
        from ...settings import get_settings
        from ...utils.theme import get_theme

        settings = get_settings()
        theme = settings.appearance.theme
        default_color = getattr(get_theme(theme, False), 'icon')

        # FIXME: Should these be defined at the theme level?
        # Currently there is a warning one
        colors = {
            'error': "#D85E38",
            'warning': "#E3B617",
            'info': default_color,
            'debug': default_color,
            'none': default_color,
        }
        color = colors.get(severity, default_color)
        icon = QColoredSVGIcon.from_resources(severity)
        self.severity_icon.setPixmap(icon.colored(color=color).pixmap(15, 15))

    def move_to_bottom_right(self, offset=(8, 8)):
        """Position widget at the bottom right edge of the parent."""
        if not self.parent():
            return
        sz = self.parent().size() - self.size() - QSize(*offset)
        self.move(QPoint(sz.width(), sz.height()))

    def slide_in(self):
        """Run animation that fades in the dialog with a slight slide up."""
        geom = self.geometry()
        self.geom_anim.setDuration(self.FADE_IN_RATE)
        self.geom_anim.setStartValue(geom.translated(0, 20))
        self.geom_anim.setEndValue(geom)
        self.geom_anim.setEasingCurve(QEasingCurve.OutQuad)
        # fade in
        self.opacity_anim.setDuration(self.FADE_IN_RATE)
        self.opacity_anim.setStartValue(0)
        self.opacity_anim.setEndValue(self.MAX_OPACITY)
        self.geom_anim.start()
        self.opacity_anim.start()

    def show(self):
        """Show the message with a fade and slight slide in from the bottom."""
        super().show()
        self.slide_in()
        if self.DISMISS_AFTER > 0:
            self.timer.setInterval(self.DISMISS_AFTER)
            self.timer.setSingleShot(True)
            self.timer.timeout.connect(self.close)
            self.timer.start()

    def mouseMoveEvent(self, event):
        """On hover, stop the self-destruct timer"""
        self.timer.stop()

    def mouseDoubleClickEvent(self, event):
        """Expand the notification on double click."""
        self.toggle_expansion()

    def close(self):
        """Fade out then close."""
        self.opacity_anim.setDuration(self.FADE_OUT_RATE)
        self.opacity_anim.setStartValue(self.MAX_OPACITY)
        self.opacity_anim.setEndValue(0)
        self.opacity_anim.start()
        self.opacity_anim.finished.connect(super().close)

    def toggle_expansion(self):
        """Toggle the expanded state of the notification frame."""
        self.contract() if self.property('expanded') else self.expand()
        self.timer.stop()

    def expand(self):
        """Expanded the notification so that the full message is visible."""
        curr = self.geometry()
        self.geom_anim.setDuration(100)
        self.geom_anim.setStartValue(curr)
        new_height = self.sizeHint().height()
        if new_height < curr.height():
            # new height would shift notification down, ensure some expansion
            new_height = curr.height() + self.MIN_EXPANSION
        delta = new_height - curr.height()
        self.geom_anim.setEndValue(
            QRect(curr.x(),
                  curr.y() - delta, curr.width(), new_height))
        self.geom_anim.setEasingCurve(QEasingCurve.OutQuad)
        self.geom_anim.start()
        self.setProperty('expanded', True)
        self.style().unpolish(self.expand_button)
        self.style().polish(self.expand_button)

    def contract(self):
        """Contract notification to a single elided line of the message."""
        geom = self.geometry()
        self.geom_anim.setDuration(100)
        self.geom_anim.setStartValue(geom)
        dlt = geom.height() - self.minimumHeight()
        self.geom_anim.setEndValue(
            QRect(geom.x(),
                  geom.y() + dlt, geom.width(),
                  geom.height() - dlt))
        self.geom_anim.setEasingCurve(QEasingCurve.OutQuad)
        self.geom_anim.start()
        self.setProperty('expanded', False)
        self.style().unpolish(self.expand_button)
        self.style().polish(self.expand_button)

    def setupUi(self):
        """Set up the UI during initialization."""
        self.setWindowFlags(Qt.SubWindow)
        self.setMinimumWidth(self.MIN_WIDTH)
        self.setMaximumWidth(self.MIN_WIDTH)
        self.setMinimumHeight(40)
        self.setSizeGripEnabled(False)
        self.setModal(False)
        self.verticalLayout = QVBoxLayout(self)
        self.verticalLayout.setContentsMargins(2, 2, 2, 2)
        self.verticalLayout.setSpacing(0)

        self.row1_widget = QWidget(self)
        self.row1 = QHBoxLayout(self.row1_widget)
        self.row1.setContentsMargins(12, 12, 12, 8)
        self.row1.setSpacing(4)
        self.severity_icon = QLabel(self.row1_widget)
        self.severity_icon.setObjectName("severity_icon")
        self.severity_icon.setMinimumWidth(30)
        self.severity_icon.setMaximumWidth(30)
        self.row1.addWidget(self.severity_icon, alignment=Qt.AlignTop)
        self.message = QElidingLabel()
        self.message.setWordWrap(True)
        self.message.setTextInteractionFlags(Qt.TextSelectableByMouse)
        self.message.setMinimumWidth(self.MIN_WIDTH - 200)
        self.message.setSizePolicy(QSizePolicy.Expanding,
                                   QSizePolicy.Expanding)
        self.row1.addWidget(self.message, alignment=Qt.AlignTop)
        self.expand_button = QPushButton(self.row1_widget)
        self.expand_button.setObjectName("expand_button")
        self.expand_button.setCursor(Qt.PointingHandCursor)
        self.expand_button.setMaximumWidth(20)
        self.expand_button.setFlat(True)

        self.row1.addWidget(self.expand_button, alignment=Qt.AlignTop)
        self.close_button = QPushButton(self.row1_widget)
        self.close_button.setObjectName("close_button")
        self.close_button.setCursor(Qt.PointingHandCursor)
        self.close_button.setMaximumWidth(20)
        self.close_button.setFlat(True)

        self.row1.addWidget(self.close_button, alignment=Qt.AlignTop)
        self.verticalLayout.addWidget(self.row1_widget, 1)
        self.row2_widget = QWidget(self)
        self.row2_widget.hide()
        self.row2 = QHBoxLayout(self.row2_widget)
        self.source_label = QLabel(self.row2_widget)
        self.source_label.setObjectName("source_label")
        self.row2.addWidget(self.source_label, alignment=Qt.AlignBottom)
        self.row2.addStretch()
        self.row2.setContentsMargins(12, 2, 16, 12)
        self.row2_widget.setMaximumHeight(34)
        self.row2_widget.setStyleSheet('QPushButton{'
                                       'padding: 4px 12px 4px 12px; '
                                       'font-size: 11px;'
                                       'min-height: 18px; border-radius: 0;}')
        self.verticalLayout.addWidget(self.row2_widget, 0)
        self.setProperty('expanded', False)
        self.resize(self.MIN_WIDTH, 40)

    def setup_buttons(self, actions: ActionSequence = ()):
        """Add buttons to the dialog.

        Parameters
        ----------
        actions : tuple, optional
            A sequence of 2-tuples, where each tuple is a string and a
            callable. Each tuple will be used to create button in the dialog,
            where the text on the button is determine by the first item in the
            tuple, and a callback function to call when the button is pressed
            is the second item in the tuple. by default ()
        """
        if isinstance(actions, dict):
            actions = list(actions.items())

        for text, callback in actions:
            btn = QPushButton(text)

            def call_back_with_self(callback, self):
                """
                We need a higher order function this to capture the reference to self.
                """
                def _inner():
                    return callback(self)

                return _inner

            btn.clicked.connect(call_back_with_self(callback, self))
            btn.clicked.connect(self.close)
            self.row2.addWidget(btn)
        if actions:
            self.row2_widget.show()
            self.setMinimumHeight(self.row2_widget.maximumHeight() +
                                  self.minimumHeight())

    def sizeHint(self):
        """Return the size required to show the entire message."""
        return QSize(
            super().sizeHint().width(),
            self.row2_widget.height() + self.message.sizeHint().height(),
        )

    @classmethod
    def from_notification(cls,
                          notification: Notification) -> NapariQtNotification:

        from ...utils.notifications import ErrorNotification

        actions = notification.actions

        if isinstance(notification, ErrorNotification):

            def show_tb(parent):
                tbdialog = QDialog(parent=parent.parent())
                tbdialog.setModal(True)
                # this is about the minimum width to not get rewrap
                # and the minimum height to not have scrollbar
                tbdialog.resize(650, 270)
                tbdialog.setLayout(QVBoxLayout())

                text = QTextEdit()
                text.setHtml(notification.as_html())
                text.setReadOnly(True)
                btn = QPushButton(trans._('Enter Debugger'))

                def _enter_debug_mode():
                    btn.setText(
                        trans.
                        _('Now Debugging. Please quit debugger in console to continue'
                          ))
                    _debug_tb(notification.exception.__traceback__)
                    btn.setText(trans._('Enter Debugger'))

                btn.clicked.connect(_enter_debug_mode)
                tbdialog.layout().addWidget(text)
                tbdialog.layout().addWidget(btn, 0, Qt.AlignRight)
                tbdialog.show()

            actions = tuple(notification.actions) + (
                (trans._('View Traceback'), show_tb), )
        else:
            actions = notification.actions

        return cls(
            message=notification.message,
            severity=notification.severity,
            source=notification.source,
            actions=actions,
        )

    @classmethod
    @ensure_main_thread
    def show_notification(cls, notification: Notification):
        from ...settings import get_settings

        settings = get_settings()

        # after https://github.com/napari/napari/issues/2370,
        # the os.getenv can be removed (and NAPARI_CATCH_ERRORS retired)
        if (notification.severity >=
                settings.application.gui_notification_level):
            cls.from_notification(notification).show()