def __init__(self, parent):
        QWidget.__init__(self)
        OWComponent.__init__(self, parent)
        SelectionGroupMixin.__init__(self)
        ImageColorSettingMixin.__init__(self)

        self.parent = parent

        self.selection_type = SELECTMANY
        self.saving_enabled = True
        self.selection_enabled = True
        self.viewtype = INDIVIDUAL  # required bt InteractiveViewBox
        self.highlighted = None
        self.data_points = None
        self.data_imagepixels = None

        self.plotview = pg.PlotWidget(background="w", viewBox=InteractiveViewBox(self))
        self.plot = self.plotview.getPlotItem()

        self.plot.scene().installEventFilter(
            HelpEventDelegate(self.help_event, self))

        layout = QVBoxLayout()
        self.setLayout(layout)
        self.layout().setContentsMargins(0, 0, 0, 0)
        self.layout().addWidget(self.plotview)

        self.img = ImageItemNan()
        self.img.setOpts(axisOrder='row-major')
        self.plot.addItem(self.img)
        self.plot.scene().sigMouseMoved.connect(self.plot.vb.mouseMovedEvent)

        layout = QGridLayout()
        self.plotview.setLayout(layout)
        self.button = QPushButton("Menu", self.plotview)
        self.button.setAutoDefault(False)

        layout.setRowStretch(1, 1)
        layout.setColumnStretch(1, 1)
        layout.addWidget(self.button, 0, 0)
        view_menu = MenuFocus(self)
        self.button.setMenu(view_menu)

        # prepare interface according to the new context
        self.parent.contextAboutToBeOpened.connect(lambda x: self.init_interface_data(x[0]))

        self.add_zoom_actions(view_menu)

        common_options = dict(
            labelWidth=50, orientation=Qt.Horizontal, sendSelectedValue=True,
            valueType=str)

        choose_xy = QWidgetAction(self)
        box = gui.vBox(self)
        box.setFocusPolicy(Qt.TabFocus)
        self.xy_model = DomainModel(DomainModel.METAS | DomainModel.CLASSES,
                                    valid_types=DomainModel.PRIMITIVE,
                                    placeholder="Position (index)")
        self.cb_attr_x = gui.comboBox(
            box, self, "attr_x", label="Axis x:", callback=self.update_attr,
            model=self.xy_model, **common_options)

        box.setFocusProxy(self.cb_attr_x)

        box.layout().addWidget(self.color_settings_box())

        choose_xy.setDefaultWidget(box)
        view_menu.addAction(choose_xy)

        self.lsx = None  # info about the X axis
        self.lsy = None  # info about the Y axis

        self.data = None
        self.data_ids = {}
Exemple #2
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    def __init__(self, parent):
        QWidget.__init__(self)
        OWComponent.__init__(self, parent)
        SelectionGroupMixin.__init__(self)

        self.parent = parent

        self.selection_type = SELECTMANY
        self.saving_enabled = True
        self.selection_enabled = True
        self.viewtype = INDIVIDUAL  # required bt InteractiveViewBox
        self.highlighted = None
        self.data_points = None
        self.data_values = None
        self.data_imagepixels = None

        self.plotview = pg.PlotWidget(background="w", viewBox=InteractiveViewBox(self))
        self.plot = self.plotview.getPlotItem()

        self.plot.scene().installEventFilter(
            HelpEventDelegate(self.help_event, self))

        layout = QVBoxLayout()
        self.setLayout(layout)
        self.layout().setContentsMargins(0, 0, 0, 0)
        self.layout().addWidget(self.plotview)

        self.img = ImageItemNan()
        self.img.setOpts(axisOrder='row-major')
        self.plot.addItem(self.img)
        self.plot.vb.setAspectLocked()
        self.plot.scene().sigMouseMoved.connect(self.plot.vb.mouseMovedEvent)

        layout = QGridLayout()
        self.plotview.setLayout(layout)
        self.button = QPushButton("View", self.plotview)
        self.button.setAutoDefault(False)

        layout.setRowStretch(1, 1)
        layout.setColumnStretch(1, 1)
        layout.addWidget(self.button, 0, 0)
        view_menu = MenuFocus(self)
        self.button.setMenu(view_menu)

        # prepare interface according to the new context
        self.parent.contextAboutToBeOpened.connect(lambda x: self.init_interface_data(x[0]))

        actions = []

        zoom_in = QAction(
            "Zoom in", self, triggered=self.plot.vb.set_mode_zooming
        )
        zoom_in.setShortcuts([Qt.Key_Z, QKeySequence(QKeySequence.ZoomIn)])
        zoom_in.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(zoom_in)
        zoom_fit = QAction(
            "Zoom to fit", self,
            triggered=lambda x: (self.plot.vb.autoRange(), self.plot.vb.set_mode_panning())
        )
        zoom_fit.setShortcuts([Qt.Key_Backspace, QKeySequence(Qt.ControlModifier | Qt.Key_0)])
        zoom_fit.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(zoom_fit)
        select_square = QAction(
            "Select (square)", self, triggered=self.plot.vb.set_mode_select_square,
        )
        select_square.setShortcuts([Qt.Key_S])
        select_square.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(select_square)


        select_polygon = QAction(
            "Select (polygon)", self, triggered=self.plot.vb.set_mode_select_polygon,
        )
        select_polygon.setShortcuts([Qt.Key_P])
        select_polygon.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(select_polygon)

        if self.saving_enabled:
            save_graph = QAction(
                "Save graph", self, triggered=self.save_graph,
            )
            save_graph.setShortcuts([QKeySequence(Qt.ControlModifier | Qt.Key_I)])
            actions.append(save_graph)

        view_menu.addActions(actions)
        self.addActions(actions)

        common_options = dict(
            labelWidth=50, orientation=Qt.Horizontal, sendSelectedValue=True,
            valueType=str)

        choose_xy = QWidgetAction(self)
        box = gui.vBox(self)
        box.setFocusPolicy(Qt.TabFocus)
        self.xy_model = DomainModel(DomainModel.METAS | DomainModel.CLASSES, valid_types=DomainModel.PRIMITIVE)
        self.cb_attr_x = gui.comboBox(
            box, self, "attr_x", label="Axis x:", callback=self.update_attr,
            model=self.xy_model, **common_options)
        self.cb_attr_y = gui.comboBox(
            box, self, "attr_y", label="Axis y:", callback=self.update_attr,
            model=self.xy_model, **common_options)
        box.setFocusProxy(self.cb_attr_x)

        self.color_cb = gui.comboBox(box, self, "palette_index", label="Color:",
                                     labelWidth=50, orientation=Qt.Horizontal)
        self.color_cb.setIconSize(QSize(64, 16))
        palettes = _color_palettes

        self.palette_index = min(self.palette_index, len(palettes) - 1)

        model = color_palette_model(palettes, self.color_cb.iconSize())
        model.setParent(self)
        self.color_cb.setModel(model)
        self.color_cb.activated.connect(self.update_color_schema)

        self.color_cb.setCurrentIndex(self.palette_index)

        form = QFormLayout(
            formAlignment=Qt.AlignLeft,
            labelAlignment=Qt.AlignLeft,
            fieldGrowthPolicy=QFormLayout.AllNonFixedFieldsGrow
        )

        self._level_low_le = lineEditDecimalOrNone(self, self, "level_low",
                                                   callback=lambda: self.update_levels() or self.reset_thresholds())
        self._level_low_le.validator().setDefault(0)
        form.addRow("Low limit:", self._level_low_le)

        self._level_high_le = lineEditDecimalOrNone(self, self, "level_high",
                                                    callback=lambda: self.update_levels() or self.reset_thresholds())
        self._level_high_le.validator().setDefault(1)
        form.addRow("High limit:", self._level_high_le)

        lowslider = gui.hSlider(
            box, self, "threshold_low", minValue=0.0, maxValue=1.0,
            step=0.05, ticks=True, intOnly=False,
            createLabel=False, callback=self.update_levels)
        highslider = gui.hSlider(
            box, self, "threshold_high", minValue=0.0, maxValue=1.0,
            step=0.05, ticks=True, intOnly=False,
            createLabel=False, callback=self.update_levels)

        form.addRow("Low:", lowslider)
        form.addRow("High:", highslider)

        box.layout().addLayout(form)

        choose_xy.setDefaultWidget(box)
        view_menu.addAction(choose_xy)

        self.markings_integral = []

        self.lsx = None  # info about the X axis
        self.lsy = None  # info about the Y axis

        self.data = None
        self.data_ids = {}
    def __init__(self, parent):
        QWidget.__init__(self)
        OWComponent.__init__(self, parent)
        SelectionGroupMixin.__init__(self)
        ImageColorSettingMixin.__init__(self)
        ImageZoomMixin.__init__(self)
        ConcurrentMixin.__init__(self)
        self.parent = parent

        self.selection_type = SELECTMANY
        self.saving_enabled = True
        self.selection_enabled = True
        self.viewtype = INDIVIDUAL  # required bt InteractiveViewBox
        self.highlighted = None
        self.data_points = None
        self.data_values = None
        self.data_imagepixels = None
        self.data_valid_positions = None

        self.plotview = pg.GraphicsLayoutWidget()
        self.plot = pg.PlotItem(background="w",
                                viewBox=InteractiveViewBox(self))
        self.plotview.addItem(self.plot)

        self.legend = ImageColorLegend()
        self.plotview.addItem(self.legend)

        self.plot.scene().installEventFilter(
            HelpEventDelegate(self.help_event, self))

        layout = QVBoxLayout()
        self.setLayout(layout)
        self.layout().setContentsMargins(0, 0, 0, 0)
        self.layout().addWidget(self.plotview)

        self.img = ImageItemNan()
        self.img.setOpts(axisOrder='row-major')
        self.plot.addItem(self.img)
        self.vis_img = pg.ImageItem()
        self.vis_img.setOpts(axisOrder='row-major')
        self.plot.vb.setAspectLocked()
        self.plot.scene().sigMouseMoved.connect(self.plot.vb.mouseMovedEvent)

        layout = QGridLayout()
        self.plotview.setLayout(layout)
        self.button = QPushButton("Menu", self.plotview)
        self.button.setAutoDefault(False)

        layout.setRowStretch(1, 1)
        layout.setColumnStretch(1, 1)
        layout.addWidget(self.button, 0, 0)
        view_menu = MenuFocus(self)
        self.button.setMenu(view_menu)

        # prepare interface according to the new context
        self.parent.contextAboutToBeOpened.connect(
            lambda x: self.init_interface_data(x[0]))

        actions = []

        self.add_zoom_actions(view_menu)

        select_square = QAction(
            "Select (square)",
            self,
            triggered=self.plot.vb.set_mode_select_square,
        )
        select_square.setShortcuts([Qt.Key_S])
        select_square.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(select_square)

        select_polygon = QAction(
            "Select (polygon)",
            self,
            triggered=self.plot.vb.set_mode_select_polygon,
        )
        select_polygon.setShortcuts([Qt.Key_P])
        select_polygon.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(select_polygon)

        if self.saving_enabled:
            save_graph = QAction(
                "Save graph",
                self,
                triggered=self.save_graph,
            )
            save_graph.setShortcuts(
                [QKeySequence(Qt.ControlModifier | Qt.Key_I)])
            actions.append(save_graph)

        view_menu.addActions(actions)
        self.addActions(actions)

        common_options = dict(labelWidth=50,
                              orientation=Qt.Horizontal,
                              sendSelectedValue=True)

        choose_xy = QWidgetAction(self)
        box = gui.vBox(self)
        box.setFocusPolicy(Qt.TabFocus)
        self.xy_model = DomainModel(DomainModel.METAS | DomainModel.CLASSES,
                                    valid_types=DomainModel.PRIMITIVE)
        self.cb_attr_x = gui.comboBox(box,
                                      self,
                                      "attr_x",
                                      label="Axis x:",
                                      callback=self.update_attr,
                                      model=self.xy_model,
                                      **common_options)
        self.cb_attr_y = gui.comboBox(box,
                                      self,
                                      "attr_y",
                                      label="Axis y:",
                                      callback=self.update_attr,
                                      model=self.xy_model,
                                      **common_options)
        box.setFocusProxy(self.cb_attr_x)

        box.layout().addWidget(self.color_settings_box())

        choose_xy.setDefaultWidget(box)
        view_menu.addAction(choose_xy)

        self.lsx = None  # info about the X axis
        self.lsy = None  # info about the Y axis

        self.data = None
        self.data_ids = {}
Exemple #4
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    def __init__(self, parent):
        QWidget.__init__(self)
        OWComponent.__init__(self, parent)
        SelectionGroupMixin.__init__(self)
        ImageColorSettingMixin.__init__(self)

        self.parent = parent

        self.selection_type = SELECTMANY
        self.saving_enabled = True
        self.selection_enabled = True
        self.viewtype = INDIVIDUAL  # required bt InteractiveViewBox
        self.highlighted = None
        self.data_points = None
        self.data_imagepixels = None

        self.plotview = pg.GraphicsLayoutWidget()

        self.plot = pg.PlotItem(background="w",
                                viewBox=InteractiveViewBox(self))
        self.plotview.addItem(self.plot)

        self.legend = ImageColorLegend()
        self.plotview.addItem(self.legend)

        self.plot.scene().installEventFilter(
            HelpEventDelegate(self.help_event, self))

        layout = QVBoxLayout()
        self.setLayout(layout)
        self.layout().setContentsMargins(0, 0, 0, 0)
        self.layout().addWidget(self.plotview)

        self.img = ImageItemNan()
        self.img.setOpts(axisOrder='row-major')
        self.plot.addItem(self.img)
        self.plot.scene().sigMouseMoved.connect(self.plot.vb.mouseMovedEvent)

        layout = QGridLayout()
        self.plotview.setLayout(layout)
        self.button = QPushButton("Menu", self.plotview)
        self.button.setAutoDefault(False)

        layout.setRowStretch(1, 1)
        layout.setColumnStretch(1, 1)
        layout.addWidget(self.button, 0, 0)
        view_menu = MenuFocus(self)
        self.button.setMenu(view_menu)

        # prepare interface according to the new context
        self.parent.contextAboutToBeOpened.connect(
            lambda x: self.init_interface_data(x[0]))

        self.add_zoom_actions(view_menu)

        common_options = dict(labelWidth=50,
                              orientation=Qt.Horizontal,
                              sendSelectedValue=True,
                              valueType=str)

        choose_xy = QWidgetAction(self)
        box = gui.vBox(self)
        box.setFocusPolicy(Qt.TabFocus)
        self.xy_model = DomainModel(DomainModel.METAS | DomainModel.CLASSES,
                                    valid_types=DomainModel.PRIMITIVE,
                                    placeholder="Position (index)")
        self.cb_attr_x = gui.comboBox(box,
                                      self,
                                      "attr_x",
                                      label="Axis x:",
                                      callback=self.update_attr,
                                      model=self.xy_model,
                                      **common_options)

        box.setFocusProxy(self.cb_attr_x)

        box.layout().addWidget(self.color_settings_box())

        choose_xy.setDefaultWidget(box)
        view_menu.addAction(choose_xy)

        self.lsx = None  # info about the X axis
        self.lsy = None  # info about the Y axis

        self.data = None
        self.data_ids = {}
    def __init__(self, parent):
        QWidget.__init__(self)
        OWComponent.__init__(self, parent)
        SelectionGroupMixin.__init__(self)
        ImageColorSettingMixin.__init__(self)
        ImageZoomMixin.__init__(self)

        self.parent = parent

        self.selection_type = SELECTMANY
        self.saving_enabled = True
        self.selection_enabled = True
        self.viewtype = INDIVIDUAL  # required bt InteractiveViewBox
        self.highlighted = None
        self.data_points = None
        self.data_values = None
        self.data_imagepixels = None

        self.plotview = pg.PlotWidget(background="w", viewBox=InteractiveViewBox(self))
        self.plot = self.plotview.getPlotItem()

        self.plot.scene().installEventFilter(
            HelpEventDelegate(self.help_event, self))

        layout = QVBoxLayout()
        self.setLayout(layout)
        self.layout().setContentsMargins(0, 0, 0, 0)
        self.layout().addWidget(self.plotview)

        self.img = ImageItemNan()
        self.img.setOpts(axisOrder='row-major')
        self.plot.addItem(self.img)
        self.plot.vb.setAspectLocked()
        self.plot.scene().sigMouseMoved.connect(self.plot.vb.mouseMovedEvent)

        layout = QGridLayout()
        self.plotview.setLayout(layout)
        self.button = QPushButton("Menu", self.plotview)
        self.button.setAutoDefault(False)

        layout.setRowStretch(1, 1)
        layout.setColumnStretch(1, 1)
        layout.addWidget(self.button, 0, 0)
        view_menu = MenuFocus(self)
        self.button.setMenu(view_menu)

        # prepare interface according to the new context
        self.parent.contextAboutToBeOpened.connect(lambda x: self.init_interface_data(x[0]))

        actions = []

        self.add_zoom_actions(view_menu)

        select_square = QAction(
            "Select (square)", self, triggered=self.plot.vb.set_mode_select_square,
        )
        select_square.setShortcuts([Qt.Key_S])
        select_square.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(select_square)

        select_polygon = QAction(
            "Select (polygon)", self, triggered=self.plot.vb.set_mode_select_polygon,
        )
        select_polygon.setShortcuts([Qt.Key_P])
        select_polygon.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(select_polygon)

        if self.saving_enabled:
            save_graph = QAction(
                "Save graph", self, triggered=self.save_graph,
            )
            save_graph.setShortcuts([QKeySequence(Qt.ControlModifier | Qt.Key_I)])
            actions.append(save_graph)

        view_menu.addActions(actions)
        self.addActions(actions)

        common_options = dict(
            labelWidth=50, orientation=Qt.Horizontal, sendSelectedValue=True,
            valueType=str)

        choose_xy = QWidgetAction(self)
        box = gui.vBox(self)
        box.setFocusPolicy(Qt.TabFocus)
        self.xy_model = DomainModel(DomainModel.METAS | DomainModel.CLASSES,
                                    valid_types=DomainModel.PRIMITIVE)
        self.cb_attr_x = gui.comboBox(
            box, self, "attr_x", label="Axis x:", callback=self.update_attr,
            model=self.xy_model, **common_options)
        self.cb_attr_y = gui.comboBox(
            box, self, "attr_y", label="Axis y:", callback=self.update_attr,
            model=self.xy_model, **common_options)
        box.setFocusProxy(self.cb_attr_x)

        box.layout().addWidget(self.color_settings_box())

        choose_xy.setDefaultWidget(box)
        view_menu.addAction(choose_xy)

        self.markings_integral = []

        self.lsx = None  # info about the X axis
        self.lsy = None  # info about the Y axis

        self.data = None
        self.data_ids = {}
Exemple #6
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    def __init__(self, parent):
        QWidget.__init__(self)
        OWComponent.__init__(self, parent)
        SelectionGroupMixin.__init__(self)

        self.parent = parent

        self.selection_type = SELECTMANY
        self.saving_enabled = True
        self.selection_enabled = True
        self.viewtype = INDIVIDUAL  # required bt InteractiveViewBox
        self.highlighted = None
        self.data_points = None
        self.data_values = None
        self.data_imagepixels = None

        self.plotview = pg.PlotWidget(background="w", viewBox=InteractiveViewBox(self))
        self.plot = self.plotview.getPlotItem()

        self.plot.scene().installEventFilter(
            HelpEventDelegate(self.help_event, self))

        layout = QVBoxLayout()
        self.setLayout(layout)
        self.layout().setContentsMargins(0, 0, 0, 0)
        self.layout().addWidget(self.plotview)

        self.img = ImageItemNan()
        self.img.setOpts(axisOrder='row-major')
        self.plot.addItem(self.img)
        self.plot.vb.setAspectLocked()
        self.plot.scene().sigMouseMoved.connect(self.plot.vb.mouseMovedEvent)

        layout = QGridLayout()
        self.plotview.setLayout(layout)
        self.button = QPushButton("Menu", self.plotview)
        self.button.setAutoDefault(False)

        layout.setRowStretch(1, 1)
        layout.setColumnStretch(1, 1)
        layout.addWidget(self.button, 0, 0)
        view_menu = MenuFocus(self)
        self.button.setMenu(view_menu)

        # prepare interface according to the new context
        self.parent.contextAboutToBeOpened.connect(lambda x: self.init_interface_data(x[0]))

        actions = []

        zoom_in = QAction(
            "Zoom in", self, triggered=self.plot.vb.set_mode_zooming
        )
        zoom_in.setShortcuts([Qt.Key_Z, QKeySequence(QKeySequence.ZoomIn)])
        zoom_in.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(zoom_in)
        zoom_fit = QAction(
            "Zoom to fit", self,
            triggered=lambda x: (self.plot.vb.autoRange(), self.plot.vb.set_mode_panning())
        )
        zoom_fit.setShortcuts([Qt.Key_Backspace, QKeySequence(Qt.ControlModifier | Qt.Key_0)])
        zoom_fit.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(zoom_fit)
        select_square = QAction(
            "Select (square)", self, triggered=self.plot.vb.set_mode_select_square,
        )
        select_square.setShortcuts([Qt.Key_S])
        select_square.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(select_square)


        select_polygon = QAction(
            "Select (polygon)", self, triggered=self.plot.vb.set_mode_select_polygon,
        )
        select_polygon.setShortcuts([Qt.Key_P])
        select_polygon.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(select_polygon)

        if self.saving_enabled:
            save_graph = QAction(
                "Save graph", self, triggered=self.save_graph,
            )
            save_graph.setShortcuts([QKeySequence(Qt.ControlModifier | Qt.Key_I)])
            actions.append(save_graph)

        view_menu.addActions(actions)
        self.addActions(actions)

        common_options = dict(
            labelWidth=50, orientation=Qt.Horizontal, sendSelectedValue=True,
            valueType=str)

        choose_xy = QWidgetAction(self)
        box = gui.vBox(self)
        box.setFocusPolicy(Qt.TabFocus)
        self.xy_model = DomainModel(DomainModel.METAS | DomainModel.CLASSES,
                                    valid_types=DomainModel.PRIMITIVE)
        self.cb_attr_x = gui.comboBox(
            box, self, "attr_x", label="Axis x:", callback=self.update_attr,
            model=self.xy_model, **common_options)
        self.cb_attr_y = gui.comboBox(
            box, self, "attr_y", label="Axis y:", callback=self.update_attr,
            model=self.xy_model, **common_options)
        box.setFocusProxy(self.cb_attr_x)

        self.color_cb = gui.comboBox(box, self, "palette_index", label="Color:",
                                     labelWidth=50, orientation=Qt.Horizontal)
        self.color_cb.setIconSize(QSize(64, 16))
        palettes = _color_palettes

        self.palette_index = min(self.palette_index, len(palettes) - 1)

        model = color_palette_model(palettes, self.color_cb.iconSize())
        model.setParent(self)
        self.color_cb.setModel(model)
        self.color_cb.activated.connect(self.update_color_schema)

        self.color_cb.setCurrentIndex(self.palette_index)

        form = QFormLayout(
            formAlignment=Qt.AlignLeft,
            labelAlignment=Qt.AlignLeft,
            fieldGrowthPolicy=QFormLayout.AllNonFixedFieldsGrow
        )

        def limit_changed():
            self.update_levels()
            self.reset_thresholds()

        self._level_low_le = lineEditDecimalOrNone(self, self, "level_low", callback=limit_changed)
        self._level_low_le.validator().setDefault(0)
        form.addRow("Low limit:", self._level_low_le)

        self._level_high_le = lineEditDecimalOrNone(self, self, "level_high", callback=limit_changed)
        self._level_high_le.validator().setDefault(1)
        form.addRow("High limit:", self._level_high_le)

        lowslider = gui.hSlider(
            box, self, "threshold_low", minValue=0.0, maxValue=1.0,
            step=0.05, ticks=True, intOnly=False,
            createLabel=False, callback=self.update_levels)
        highslider = gui.hSlider(
            box, self, "threshold_high", minValue=0.0, maxValue=1.0,
            step=0.05, ticks=True, intOnly=False,
            createLabel=False, callback=self.update_levels)

        form.addRow("Low:", lowslider)
        form.addRow("High:", highslider)

        box.layout().addLayout(form)

        choose_xy.setDefaultWidget(box)
        view_menu.addAction(choose_xy)

        self.markings_integral = []

        self.lsx = None  # info about the X axis
        self.lsy = None  # info about the Y axis

        self.data = None
        self.data_ids = {}