Exemple #1
0
    def __init__(self, parent: OWWidget = None):
        QtWidgets.QWidget.__init__(self, parent)
        OWComponent.__init__(self, parent)

        self.parent = parent

        # Create the mpl Figure and FigCanvas objects. 5x4 inches, 100 dots-per-inch
        self.dpi = 100
        self.fig = Figure((5.0, 4.0), dpi=self.dpi)
        self.fig.subplots_adjust(left=0.12, bottom=0.07, right=0.98, top=0.98)

        self.canvas = FigureCanvas(self.fig)
        self.canvas.setParent(self)

        self.axes = self.fig.add_subplot(111)

        # Create the navigation toolbar, tied to the canvas
        self.mpl_toolbar = CustomNavigationToolbar(self.canvas,
                                                   self)  #♥NavigationToolbar

        vbox = QtWidgets.QVBoxLayout()
        vbox.addWidget(self.mpl_toolbar)
        vbox.addWidget(self.canvas)
        self.setLayout(vbox)
        self.layout().setContentsMargins(0, 0, 0, 0)
Exemple #2
0
    def __init__(self, parent_widget, parent_component):
        QObject.__init__(self)
        OWComponent.__init__(self, widget=parent_widget)

        box = gui.widgetBox(parent_component, orientation=Qt.Horizontal)

        self.page_limit = gui.radioButtons(
            box,
            self,
            'items_per_page',
            [str(val) for val in ItemsPerPage.values()],
            orientation=Qt.Horizontal,
            callback=self.on_limit_changed,
            label=self.PAGE_LIMIT_LABEL,
        )

        self.page_left_btn = QToolButton()
        self.page_left_btn.setStyleSheet('QToolButton {border: none;}')
        self.page_left_btn.setArrowType(Qt.LeftArrow)
        self.page_left_btn.pressed.connect(self.left_btn_pressed)

        self.offset_label = gui.label(None, self, str(self.current_page), labelWidth=15)
        self.offset_label.setAlignment(Qt.AlignCenter)

        self.page_right_btn = QToolButton()
        self.page_right_btn.setStyleSheet('QToolButton {border: none;}')
        self.page_right_btn.setArrowType(Qt.RightArrow)
        self.page_right_btn.pressed.connect(self.right_btn_pressed)

        parent_widget.pagination_availability.connect(self._handle_paginate_buttons)

        box.layout().addStretch(1)
        box.layout().addWidget(self.page_left_btn)
        box.layout().addWidget(self.offset_label)
        box.layout().addWidget(self.page_right_btn)
Exemple #3
0
    def __init__(self,
                 parent: OWWidget = None,
                 title=None,
                 column_count=2,
                 column_headers=["x", "y"]):
        QtWidgets.QWidget.__init__(self, parent)
        OWComponent.__init__(self, parent)

        # GUI
        self.table = gui.table(self, 0, column_count)
        # selection multiline and row
        self.table.setSelectionMode(
            QtWidgets.QAbstractItemView.SelectionMode.MultiSelection)
        self.table.setSelectionBehavior(
            QtWidgets.QAbstractItemView.SelectionBehavior.SelectRows)
        # set headers labels
        self.table.setHorizontalHeaderLabels(column_headers)
        # columns shapes
        self.table.horizontalHeader().setResizeMode(
            QtWidgets.QHeaderView.Stretch)

        vbox = QtWidgets.QVBoxLayout()
        if title is not None:
            vbox.addWidget(gui.label(self, parent, title))
        vbox.addWidget(self.table)
        self.setLayout(vbox)
Exemple #4
0
    def __init__(self, parent_widget, parent_component):
        QObject.__init__(self)
        OWComponent.__init__(self, widget=parent_widget)

        box = gui.widgetBox(parent_component, self.BOX_TITLE, margin=3)
        gui.checkBox(box,
                     self,
                     'quantile_norm',
                     self.QUANTILE_NORM_LABEL,
                     callback=self.options_changed.emit)
        gui.checkBox(box,
                     self,
                     'log_norm',
                     self.LOG_NORM_LABEL,
                     callback=self.options_changed.emit)
        gui.checkBox(box,
                     self,
                     'z_score_norm',
                     self.Z_SCORE_LABEL,
                     callback=self.on_z_score_selected)
        self.z_score_axis_btn = gui.radioButtons(
            gui.indentedBox(box),
            self,
            'z_score_axis',
            btnLabels=['columns', 'rows'],
            callback=self.options_changed.emit,
            orientation=Qt.Horizontal,
        )
        self.z_score_axis_btn.setHidden(not bool(self.z_score_norm))

        gui.checkBox(
            box,
            self,
            'quantile_transform',
            self.QUANTILE_TRANSFORM_LABEL,
            callback=self.on_quantile_transform_selected,
        )
        self.quantile_transform_axis_btn = gui.radioButtons(
            gui.indentedBox(box),
            self,
            'quantile_transform_axis',
            btnLabels=['columns', 'rows'],
            callback=self.options_changed.emit,
            orientation=Qt.Horizontal,
        )
        self.quantile_transform_dist_btn = gui.radioButtons(
            gui.indentedBox(box),
            self,
            'quantile_transform_dist',
            btnLabels=QuantileTransformDist.values(),
            callback=self.options_changed.emit,
            orientation=Qt.Horizontal,
        )

        self.quantile_transform_axis_btn.setHidden(
            not bool(self.quantile_transform))
        self.quantile_transform_dist_btn.setHidden(
            not bool(self.quantile_transform))
Exemple #5
0
    def __init__(self, parent=None, label=""):
        QWidget.__init__(self, parent)
        OWComponent.__init__(self, None)

        layout = QHBoxLayout()
        layout.setContentsMargins(0, 0, 0, 0)
        self.setLayout(layout)

        self.position = 0

        self.edit = lineEditFloatRange(self, self, "position", callback=self.edited.emit)
        layout.addWidget(self.edit)
        self.edit.focusIn.connect(self.focusIn.emit)
        self.line = MovableVline(position=self.position, label=label)
        connect_line(self.line, self, "position")
        self.line.sigMoveFinished.connect(self.edited.emit)
    def __init__(self, parent, select_fn=None):
        QWidget.__init__(self)
        OWComponent.__init__(self, parent)

        self.parent = parent

        self.select_fn = select_fn

        self.selection_type = SELECTMANY
        self.saving_enabled = hasattr(self.parent, "save_graph")
        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.selection = 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)

        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
        )

        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_color_schema)
        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_color_schema)

        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)

        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 #8
0
    def __init__(self, parent_widget, parent_component):
        QObject.__init__(self)
        OWComponent.__init__(self, widget=parent_widget)

        box = gui.widgetBox(parent_component, margin=0)

        self.filter_full_text = gui.lineEdit(
            box,
            self,
            'filter_by_full_text',
            label=self.FILTER_FULL_TEXT_LABEL,
            callback=self.on_filter_full_text_changed,
        )

        self.toggle_animation = QParallelAnimationGroup()
        self.toggle_button = QToolButton()
        self.toggle_button.setCheckable(True)
        self.toggle_button.setChecked(False)
        self.toggle_button.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
        self.toggle_button.setArrowType(Qt.RightArrow)
        self.toggle_button.setText(self.TOGGLE_BTN_LABEL)
        self.toggle_button.setStyleSheet('QToolButton {border: none; padding-top: 5px; }')
        self.toggle_button.setIconSize(QSize(15, 15))
        self.toggle_button.pressed.connect(self.on_toggle)

        self.collapsible_components = QScrollArea()
        self.collapsible_components.setMaximumHeight(0)
        self.collapsible_components.setMinimumHeight(0)
        self.collapsible_components.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
        self.collapsible_components.setFrameShape(QFrame.NoFrame)

        box = gui.widgetBox(parent_component, margin=0)
        box.layout().addWidget(self.toggle_button)
        box.layout().addWidget(self.collapsible_components)

        self.toggle_animation.addAnimation(QPropertyAnimation(box, b"minimumHeight"))
        self.toggle_animation.addAnimation(QPropertyAnimation(box, b"maximumHeight"))
        self.toggle_animation.addAnimation(QPropertyAnimation(self.collapsible_components, b"maximumHeight"))

        layout = QHBoxLayout()
        left_box = gui.widgetBox(None, self, margin=0, flat=True)
        mid_box = gui.widgetBox(None, self, margin=0, flat=True)
        right_box = gui.widgetBox(None, self, margin=0, flat=True)

        self.filter_name = gui.lineEdit(
            left_box, self, 'filter_by_name', label=self.FILTER_NAME_LABEL, callback=self.on_filter_changed, addSpace=5
        )
        self.filter_contrib = gui.lineEdit(
            mid_box,
            self,
            'filter_by_contrib',
            label=self.FILTER_CONTRIB_LABEL,
            callback=self.on_filter_changed,
            addSpace=5,
        )
        self.filter_owner = gui.lineEdit(
            right_box,
            self,
            'filter_by_owner',
            label=self.FILTER_OWNER_LABEL,
            callback=self.on_filter_changed,
            addSpace=5,
        )
        self.filter_modified = gui.comboBox(
            left_box,
            self,
            'filter_by_modified',
            label=self.FILTER_MODIFIED_LABEL,
            callback=self.on_filter_changed,
            items=FilterByDateModified.labels(),
        )
        self.sorting = gui.comboBox(
            mid_box, self, 'sort_by', label=self.SORTING_LABEL, callback=self.on_filter_changed, items=SortBy.labels()
        )

        gui.rubber(left_box)
        gui.rubber(mid_box)
        gui.rubber(right_box)
        layout.addWidget(left_box)
        layout.addWidget(mid_box)
        layout.addWidget(right_box)
        self.collapsible_components.setLayout(layout)

        collapsed_height = box.layout().sizeHint().height() - self.collapsible_components.maximumHeight()
        content_height = layout.sizeHint().height()

        for i in range(self.toggle_animation.animationCount()):
            animation = self.toggle_animation.animationAt(i)
            animation.setDuration(100)
            animation.setStartValue(collapsed_height)
            animation.setEndValue(collapsed_height + content_height)

        content_animation = self.toggle_animation.animationAt(self.toggle_animation.animationCount() - 1)
        content_animation.setDuration(100)
        content_animation.setStartValue(0)
        content_animation.setEndValue(content_height)
Exemple #9
0
    def __init__(self, parent=None, select=SELECTNONE):
        QWidget.__init__(self)
        OWComponent.__init__(self, parent)

        self.parent = parent

        self.selection_type = select
        self.saving_enabled = hasattr(self.parent, "save_graph")
        self.clear_data(init=True)

        self.plotview = pg.PlotWidget(background="w", viewBox=InteractiveViewBox(self))
        self.plot = self.plotview.getPlotItem()
        self.plot.setDownsampling(auto=True, mode="peak")

        self.markings = []
        self.vLine = pg.InfiniteLine(angle=90, movable=False)
        self.hLine = pg.InfiniteLine(angle=0, movable=False)
        self.proxy = pg.SignalProxy(self.plot.scene().sigMouseMoved, rateLimit=20, slot=self.mouseMoved, delay=0.1)
        self.plot.scene().sigMouseMoved.connect(self.plot.vb.mouseMovedEvent)
        self.plot.vb.sigRangeChanged.connect(self.resized)
        self.pen_mouse = pg.mkPen(color=(0, 0, 255), width=2)
        self.pen_normal = defaultdict(lambda: pg.mkPen(color=(200, 200, 200, 127), width=1))
        self.pen_subset = defaultdict(lambda: pg.mkPen(color=(0, 0, 0, 127), width=1))
        self.pen_selected = defaultdict(lambda: pg.mkPen(color=(0, 0, 0, 127), width=2, style=Qt.DotLine))
        self.label = pg.TextItem("", anchor=(1, 0))
        self.label.setText("", color=(0, 0, 0))
        self.discrete_palette = None
        QPixmapCache.setCacheLimit(max(QPixmapCache.cacheLimit(), 100 * 1024))
        self.curves_cont = PlotCurvesItem()
        self.important_decimals = 4, 4

        self.MOUSE_RADIUS = 20

        self.clear_graph()

        #interface settings
        self.location = True #show current position
        self.markclosest = True #mark
        self.crosshair = True
        self.crosshair_hidden = True
        self.viewtype = INDIVIDUAL

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

        actions = []

        zoom_in = QAction(
            "Zoom in", self, triggered=self.plot.vb.set_mode_zooming
        )
        zoom_in.setShortcuts([Qt.Key_Z, QKeySequence(QKeySequence.ZoomIn)])
        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)])
        actions.append(zoom_fit)
        rescale_y = QAction(
            "Rescale Y to fit", self, shortcut=Qt.Key_D,
            triggered=self.rescale_current_view_y
        )
        actions.append(rescale_y)
        view_individual = QAction(
            "Show individual", self, shortcut=Qt.Key_I,
            triggered=lambda x: self.show_individual()
        )
        actions.append(view_individual)
        view_average = QAction(
            "Show averages", self, shortcut=Qt.Key_A,
            triggered=lambda x: self.show_average()
        )
        actions.append(view_average)
        self.show_grid = False
        self.show_grid_a = QAction(
            "Show grid", self, shortcut=Qt.Key_G, checkable=True,
            triggered=self.grid_changed
        )
        actions.append(self.show_grid_a)
        self.invertX_menu = QAction(
            "Invert X", self, shortcut=Qt.Key_X, checkable=True,
            triggered=self.invertX_changed
        )
        actions.append(self.invertX_menu)
        if self.selection_type == SELECTMANY:
            select_curves = QAction(
                "Select (line)", self, triggered=self.plot.vb.set_mode_select,
            )
            select_curves.setShortcuts([Qt.Key_S])
            actions.append(select_curves)
        if self.saving_enabled:
            save_graph = QAction(
                "Save graph", self, triggered=self.save_graph,
            )
            save_graph.setShortcuts([QKeySequence(Qt.ControlModifier | Qt.Key_S)])
            actions.append(save_graph)

        range_menu = MenuFocus("Define view range", self)
        range_action = QWidgetAction(self)
        layout = QGridLayout()
        range_box = gui.widgetBox(self, margin=5, orientation=layout)
        range_box.setFocusPolicy(Qt.TabFocus)
        self.range_e_x1 = lineEditFloatOrNone(None, self, "range_x1", label="e")
        range_box.setFocusProxy(self.range_e_x1)
        self.range_e_x2 = lineEditFloatOrNone(None, self, "range_x2", label="e")
        layout.addWidget(QLabel("X"), 0, 0, Qt.AlignRight)
        layout.addWidget(self.range_e_x1, 0, 1)
        layout.addWidget(QLabel("-"), 0, 2)
        layout.addWidget(self.range_e_x2, 0, 3)
        self.range_e_y1 = lineEditFloatOrNone(None, self, "range_y1", label="e")
        self.range_e_y2 = lineEditFloatOrNone(None, self, "range_y2", label="e")
        layout.addWidget(QLabel("Y"), 1, 0, Qt.AlignRight)
        layout.addWidget(self.range_e_y1, 1, 1)
        layout.addWidget(QLabel("-"), 1, 2)
        layout.addWidget(self.range_e_y2, 1, 3)
        b = gui.button(None, self, "Apply", callback=self.set_limits)
        layout.addWidget(b, 2, 3, Qt.AlignRight)
        range_action.setDefaultWidget(range_box)
        range_menu.addAction(range_action)

        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)
        view_menu.addActions(actions)
        view_menu.addMenu(range_menu)
        self.addActions(actions)

        choose_color_action = QWidgetAction(self)
        choose_color_box = gui.hBox(self)
        choose_color_box.setFocusPolicy(Qt.TabFocus)
        model = VariableListModel()
        self.attrs = []
        model.wrap(self.attrs)
        label = gui.label(choose_color_box, self, "Color by")
        label.setAlignment(Qt.AlignRight | Qt.AlignVCenter)
        self.attrCombo = gui.comboBox(
            choose_color_box, self, value="color_attr", contentsLength=12,
            callback=self.change_color_attr)
        self.attrCombo.setModel(model)
        choose_color_box.setFocusProxy(self.attrCombo)
        choose_color_action.setDefaultWidget(choose_color_box)
        view_menu.addAction(choose_color_action)

        labels_action = QWidgetAction(self)
        layout = QGridLayout()
        labels_box = gui.widgetBox(self, margin=0, orientation=layout)
        t = gui.lineEdit(None, self, "label_title", label="Title:",
                         callback=self.labels_changed, callbackOnType=self.labels_changed)
        layout.addWidget(QLabel("Title:"), 0, 0, Qt.AlignRight)
        layout.addWidget(t, 0, 1)
        t = gui.lineEdit(None, self, "label_xaxis", label="X-axis:",
                         callback=self.labels_changed, callbackOnType=self.labels_changed)
        layout.addWidget(QLabel("X-axis:"), 1, 0, Qt.AlignRight)
        layout.addWidget(t, 1, 1)
        t = gui.lineEdit(None, self, "label_yaxis", label="Y-axis:",
                         callback=self.labels_changed, callbackOnType=self.labels_changed)
        layout.addWidget(QLabel("Y-axis:"), 2, 0, Qt.AlignRight)
        layout.addWidget(t, 2, 1)
        labels_action.setDefaultWidget(labels_box)
        view_menu.addAction(labels_action)
        self.labels_changed()  # apply saved labels

        self.invertX_apply()
        self.plot.vb.set_mode_panning()

        self.reports = {}  # current reports

        self.viewhelpers_show()
    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 = {}
    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.setup_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 #12
0
    def __init__(self, parent):
        QWidget.__init__(self)
        OWComponent.__init__(self, parent)

        self.parent = parent

        self.selection_enabled = False

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

        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()

        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)

        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.models = [self.xy_model]
        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)

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

        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_color_schema)
        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_color_schema)
        gammaslider = gui.hSlider(box,
                                  self,
                                  "gamma",
                                  minValue=0.0,
                                  maxValue=20.0,
                                  step=1.0,
                                  ticks=True,
                                  intOnly=False,
                                  createLabel=False,
                                  callback=self.update_color_schema)

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

        box.layout().addLayout(form)

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

        self.markings_integral = []

        self.data = None
    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 #14
0
    def __init__(self, parent: OWWidget, select=SELECTNONE):
        QWidget.__init__(self)
        OWComponent.__init__(self, parent)

        self.parent = parent

        self.selection_type = select
        self.select_at_least_1 = False
        self.saving_enabled = hasattr(self.parent, "save_graph")
        self.clear_data()
        self.subset = None  # current subset input, an array of indices
        self.subset_indices = None  # boolean index array with indices in self.data

        self.plotview = pg.PlotWidget(background="w", viewBox=InteractiveViewBoxC(self))
        self.plot = self.plotview.getPlotItem()
        self.plot.setDownsampling(auto=True, mode="peak")

        self.markings = []
        self.vLine = pg.InfiniteLine(angle=90, movable=False)
        self.hLine = pg.InfiniteLine(angle=0, movable=False)
        self.proxy = pg.SignalProxy(self.plot.scene().sigMouseMoved, rateLimit=20, slot=self.mouseMoved, delay=0.1)
        self.plot.scene().sigMouseMoved.connect(self.plot.vb.mouseMovedEvent)
        self.plot.vb.sigRangeChanged.connect(self.resized)
        self.plot.vb.sigResized.connect(self.resized)
        self.pen_mouse = pg.mkPen(color=(0, 0, 255), width=2)
        self.pen_normal = defaultdict(lambda: pg.mkPen(color=(200, 200, 200, 127), width=1))
        self.pen_subset = defaultdict(lambda: pg.mkPen(color=(0, 0, 0, 127), width=1))
        self.pen_selected = defaultdict(lambda: pg.mkPen(color=(0, 0, 0, 127), width=2, style=Qt.DotLine))
        self.label = pg.TextItem("", anchor=(1, 0))
        self.label.setText("", color=(0, 0, 0))
        self.discrete_palette = None
        QPixmapCache.setCacheLimit(max(QPixmapCache.cacheLimit(), 100 * 1024))
        self.curves_cont = PlotCurvesItem()
        self.important_decimals = 4, 4

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

        # whether to rescale at next update
        self.rescale_next = True

        self.MOUSE_RADIUS = 20

        self.clear_graph()

        # interface settings
        self.location = True  # show current position
        self.markclosest = True  # mark
        self.crosshair = True
        self.crosshair_hidden = True

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

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

        actions = []

        resample_curves = QAction(
            "Resample curves", self, shortcut=Qt.Key_R,
            triggered=lambda x: self.resample_curves(self.sample_seed+1)
        )
        resample_curves.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(resample_curves)
        reset_curves = QAction(
            "Resampling reset", self, shortcut=QKeySequence(Qt.ControlModifier | Qt.Key_R),
            triggered=lambda x: self.resample_curves(0)
        )
        reset_curves.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(reset_curves)

        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)
        rescale_y = QAction(
            "Rescale Y to fit", self, shortcut=Qt.Key_D,
            triggered=self.rescale_current_view_y
        )
        rescale_y.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(rescale_y)

        self.view_average_menu = QAction(
            "Show averages", self, shortcut=Qt.Key_A, checkable=True,
            triggered=lambda x: self.viewtype_changed()
        )
        self.view_average_menu.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(self.view_average_menu)

        self.show_grid = False
        self.show_grid_a = QAction(
            "Show grid", self, shortcut=Qt.Key_G, checkable=True,
            triggered=self.grid_changed
        )
        self.show_grid_a.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(self.show_grid_a)
        self.invertX_menu = QAction(
            "Invert X", self, shortcut=Qt.Key_X, checkable=True,
            triggered=self.invertX_changed
        )
        self.invertX_menu.setShortcutContext(Qt.WidgetWithChildrenShortcut)
        actions.append(self.invertX_menu)
        if self.selection_type == SELECTMANY:
            select_curves = QAction(
                "Select (line)", self, triggered=self.line_select_start,
            )
            select_curves.setShortcuts([Qt.Key_S])
            select_curves.setShortcutContext(Qt.WidgetWithChildrenShortcut)
            actions.append(select_curves)
        if self.saving_enabled:
            save_graph = QAction(
                "Save graph", self, triggered=self.save_graph,
            )
            save_graph.setShortcuts([QKeySequence(Qt.ControlModifier | Qt.Key_S)])
            save_graph.setShortcutContext(Qt.WidgetWithChildrenShortcut)
            actions.append(save_graph)

        range_menu = MenuFocus("Define view range", self)
        range_action = QWidgetAction(self)
        layout = QGridLayout()
        range_box = gui.widgetBox(self, margin=5, orientation=layout)
        range_box.setFocusPolicy(Qt.TabFocus)
        self.range_e_x1 = lineEditFloatOrNone(None, self, "range_x1", label="e")
        range_box.setFocusProxy(self.range_e_x1)
        self.range_e_x2 = lineEditFloatOrNone(None, self, "range_x2", label="e")
        layout.addWidget(QLabel("X"), 0, 0, Qt.AlignRight)
        layout.addWidget(self.range_e_x1, 0, 1)
        layout.addWidget(QLabel("-"), 0, 2)
        layout.addWidget(self.range_e_x2, 0, 3)
        self.range_e_y1 = lineEditFloatOrNone(None, self, "range_y1", label="e")
        self.range_e_y2 = lineEditFloatOrNone(None, self, "range_y2", label="e")
        layout.addWidget(QLabel("Y"), 1, 0, Qt.AlignRight)
        layout.addWidget(self.range_e_y1, 1, 1)
        layout.addWidget(QLabel("-"), 1, 2)
        layout.addWidget(self.range_e_y2, 1, 3)
        b = gui.button(None, self, "Apply", callback=self.set_limits)
        layout.addWidget(b, 2, 3, Qt.AlignRight)
        range_action.setDefaultWidget(range_box)
        range_menu.addAction(range_action)

        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)
        view_menu.addActions(actions)
        view_menu.addMenu(range_menu)
        self.addActions(actions)

        choose_color_action = QWidgetAction(self)
        choose_color_box = gui.hBox(self)
        choose_color_box.setFocusPolicy(Qt.TabFocus)
        label = gui.label(choose_color_box, self, "Color by")
        label.setAlignment(Qt.AlignRight | Qt.AlignVCenter)
        self.feature_color_model = DomainModel(DomainModel.METAS | DomainModel.CLASSES,
                                               valid_types=(DiscreteVariable,), placeholder="None")
        self.feature_color_combo = gui.comboBox(
            choose_color_box, self, "feature_color",
            callback=self.update_view, model=self.feature_color_model,
            valueType=str)
        choose_color_box.setFocusProxy(self.feature_color_combo)
        choose_color_action.setDefaultWidget(choose_color_box)
        view_menu.addAction(choose_color_action)

        cycle_colors = QShortcut(Qt.Key_C, self, self.cycle_color_attr, context=Qt.WidgetWithChildrenShortcut)

        labels_action = QWidgetAction(self)
        layout = QGridLayout()
        labels_box = gui.widgetBox(self, margin=0, orientation=layout)
        t = gui.lineEdit(None, self, "label_title", label="Title:",
                         callback=self.labels_changed, callbackOnType=self.labels_changed)
        layout.addWidget(QLabel("Title:"), 0, 0, Qt.AlignRight)
        layout.addWidget(t, 0, 1)
        t = gui.lineEdit(None, self, "label_xaxis", label="X-axis:",
                         callback=self.labels_changed, callbackOnType=self.labels_changed)
        layout.addWidget(QLabel("X-axis:"), 1, 0, Qt.AlignRight)
        layout.addWidget(t, 1, 1)
        t = gui.lineEdit(None, self, "label_yaxis", label="Y-axis:",
                         callback=self.labels_changed, callbackOnType=self.labels_changed)
        layout.addWidget(QLabel("Y-axis:"), 2, 0, Qt.AlignRight)
        layout.addWidget(t, 2, 1)
        labels_action.setDefaultWidget(labels_box)
        view_menu.addAction(labels_action)
        self.labels_changed()  # apply saved labels

        self.invertX_apply()
        self.plot.vb.set_mode_panning()

        self.reports = {}  # current reports

        self.viewhelpers_show()
Exemple #15
0
    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 = {}