Example #1
0
class HelpExplorer(QWidget, DockMixin):
    """A widget for showing the documentation. It behaves somewhat similar
    to spyders object inspector plugin and can show restructured text either
    as html (if sphinx is installed) or as plain text. It furthermore has a
    browser to show html content

    Warnings
    --------
    The :class:`HelpBrowser` class is known to crash under PyQt4 when new web
    page domains are loaded. Hence you should disable the browsing to different
    remote websites and even disable intersphinx"""

    #: The viewer classes used by the help explorer. :class:`HelpExplorer`
    #: instances replace this attribute with the corresponding HelpMixin
    #: instance
    viewers = OrderedDict([('HTML help', UrlHelp), ('Plain text', TextHelp)])

    def __init__(self, *args, **kwargs):
        super(HelpExplorer, self).__init__(*args, **kwargs)
        self.vbox = vbox = QVBoxLayout()
        self.combo = QComboBox(parent=self)
        vbox.addWidget(self.combo)
        self.viewers = OrderedDict([
            (key, cls(parent=self)) for key, cls in six.iteritems(self.viewers)
        ])
        for key, ini in six.iteritems(self.viewers):
            self.combo.addItem(key)
            ini.hide()
            vbox.addWidget(ini)
        self.viewer = next(six.itervalues(self.viewers))
        self.viewer.show()
        self.combo.currentIndexChanged[str].connect(self.set_viewer)
        self.setLayout(vbox)

    def set_viewer(self, name):
        """Sets the current documentation viewer

        Parameters
        ----------
        name: str or object
            A string must be one of the :attr:`viewers` attribute. An object
            can be one of the values in the :attr:`viewers` attribute"""
        if isstring(name) and asstring(name) not in self.viewers:
            raise ValueError("Don't have a viewer named %s" % (name, ))
        elif not isstring(name):
            viewer = name
        else:
            name = asstring(name)
            viewer = self.viewers[name]
        self.viewer.hide()
        self.viewer = viewer
        self.viewer.show()
        if (isstring(name) and not self.combo.currentText() == name):
            self.combo.setCurrentIndex(list(self.viewers).index(name))

    @docstrings.dedent
    def show_help(self, obj, oname='', files=None):
        """
        Show the documentaion of the given object

        We first try to use the current viewer based upon it's
        :attr:`HelpMixin.can_document_object` attribute. If this does not work,
        we check the other viewers

        Parameters
        ----------
        %(HelpMixin.show_help.parameters)s"""
        oname = asstring(oname)
        ret = None
        if self.viewer.can_document_object:
            try:
                ret = self.viewer.show_help(obj, oname=oname, files=files)
            except Exception:
                logger.debug("Could not document %s with %s viewer!",
                             oname,
                             self.combo.currentText(),
                             exc_info=True)
        else:
            curr_i = self.combo.currentIndex()
            for i, (viewername,
                    viewer) in enumerate(six.iteritems(self.viewers)):
                if i != curr_i and viewer.can_document_object:
                    self.set_viewer(viewername)
                    self.combo.blockSignals(True)
                    self.combo.setCurrentIndex(i)
                    self.combo.blockSignals(False)
                    try:
                        ret = viewer.show_help(obj, oname=oname, files=files)
                    except Exception:
                        logger.debug("Could not document %s with %s viewer!",
                                     oname,
                                     viewername,
                                     exc_info=True)
        if ret:
            self.parent().raise_()
        return ret

    @docstrings.dedent
    def show_rst(self, text, oname='', files=None):
        """
        Show restructured text

        We first try to use the current viewer based upon it's
        :attr:`HelpMixin.can_show_rst` attribute. If this does not work,
        we check the other viewers

        Parameters
        ----------
        %(HelpMixin.show_rst.parameters)s"""
        ret = None
        if self.viewer.can_show_rst:
            ret = self.viewer.show_rst(text, oname=oname, files=files)
        else:
            for viewer in six.itervalues(self.viewers):
                if viewer.can_show_rst:
                    self.set_viewer(viewer)
                    ret = viewer.show_rst(text, oname=oname, files=files)
                    break
        if ret:
            self.parent().raise_()
        return ret

    @docstrings.dedent
    def show_intro(self, text=''):
        """
        Show an intro text

        We first try to use the current viewer based upon it's
        :attr:`HelpMixin.can_show_rst` attribute. If this does not work,
        we check the other viewers

        Parameters
        ----------
        %(HelpMixin.show_intro.parameters)s"""
        found = False
        for i, viewer in enumerate(six.itervalues(self.viewers)):
            viewer.show_intro(text)
            if not found and viewer.can_show_rst:
                if i:
                    self.set_viewer(viewer)
                found = True

    def close(self, *args, **kwargs):
        self.viewers['HTML help'].close(*args, **kwargs)
        return super(HelpExplorer, self).close(*args, **kwargs)
Example #2
0
class MarkerControl(StraditizerControlBase, QWidget):
    """Widget to control the appearance of the marks

    This widget controls the appearance of the
    :class:`straditize.cross_mark.CrossMarks` instances in the
    :attr:`~straditize.straditizer.Straditizer.marks` attribute of the
    :attr:`~straditize.widgets.StraditizerControlBase.straditizer`"""

    _toolbar = None

    @property
    def marks(self):
        """The :class:`~straditize.cross_mark.CrossMarks` of the straditizer
        """
        return chain(self.straditizer.marks, self.straditizer.magni_marks)

    @docstrings.dedent
    def __init__(self, straditizer_widgets, item, *args, **kwargs):
        """
        Parameters
        ----------
        %(StraditizerControlBase.init_straditizercontrol.parameters)s
        """
        super(MarkerControl, self).__init__(*args, **kwargs)
        self.init_straditizercontrol(straditizer_widgets, item)
        vbox = QVBoxLayout()

        # auto hide button
        box_hide = QGridLayout()
        self.cb_auto_hide = QCheckBox('Auto-hide')
        self.cb_show_connected = QCheckBox('Show additionals')
        self.cb_drag_hline = QCheckBox('Drag in y-direction')
        self.cb_drag_vline = QCheckBox('Drag in x-direction')
        self.cb_selectable_hline = QCheckBox('Horizontal lines selectable')
        self.cb_selectable_vline = QCheckBox('Vertical lines selectable')
        self.cb_show_hlines = QCheckBox('Show horizontal lines')
        self.cb_show_vlines = QCheckBox('Show vertical lines')
        box_hide.addWidget(self.cb_auto_hide, 0, 0)
        box_hide.addWidget(self.cb_show_connected, 0, 1)
        box_hide.addWidget(self.cb_show_vlines, 1, 0)
        box_hide.addWidget(self.cb_show_hlines, 1, 1)
        box_hide.addWidget(self.cb_drag_hline, 2, 0)
        box_hide.addWidget(self.cb_drag_vline, 2, 1)
        box_hide.addWidget(self.cb_selectable_hline, 3, 0)
        box_hide.addWidget(self.cb_selectable_vline, 3, 1)
        vbox.addLayout(box_hide)

        style_box = QGridLayout()
        style_box.addWidget(QLabel('Unselected:'), 0, 1)
        selected_label = QLabel('Selected:')
        style_box.addWidget(selected_label, 0, 2)
        max_width = selected_label.sizeHint().width()

        # line color
        self.lbl_color_select = ColorLabel()
        self.lbl_color_unselect = ColorLabel()
        self.lbl_color_select.setMaximumWidth(max_width)
        self.lbl_color_unselect.setMaximumWidth(max_width)
        style_box.addWidget(QLabel('Line color:'), 1, 0)
        style_box.addWidget(self.lbl_color_unselect, 1, 1)
        style_box.addWidget(self.lbl_color_select, 1, 2)

        # line width
        self.txt_line_width = QLineEdit()
        self.txt_line_width_select = QLineEdit()

        validator = QDoubleValidator()
        validator.setBottom(0)
        self.txt_line_width.setValidator(validator)
        self.txt_line_width_select.setValidator(validator)

        style_box.addWidget(QLabel('Line width:'), 2, 0)
        style_box.addWidget(self.txt_line_width, 2, 1)
        style_box.addWidget(self.txt_line_width_select, 2, 2)

        vbox.addLayout(style_box)

        # line style
        hbox_line_style = QHBoxLayout()
        hbox_line_style.addWidget(QLabel('Line style'))
        self.combo_line_style = QComboBox()
        hbox_line_style.addWidget(self.combo_line_style)
        vbox.addLayout(hbox_line_style)
        self.fill_linestyles()
        self.combo_line_style.setSizeAdjustPolicy(QComboBox.AdjustToContents)

        # marker style
        hbox_marker_style = QHBoxLayout()
        hbox_marker_style.addWidget(QLabel('Marker size'))
        self.txt_marker_size = QLineEdit()
        self.txt_marker_size.setMinimumWidth(40)
        self.txt_marker_size.setText(str(mpl.rcParams['lines.markersize']))
        validator = QDoubleValidator()
        validator.setBottom(0)
        self.txt_marker_size.setValidator(validator)
        hbox_marker_style.addWidget(self.txt_marker_size)
        hbox_marker_style.addWidget(QLabel('Marker style'))
        self.combo_marker_style = QComboBox()
        hbox_marker_style.addWidget(self.combo_marker_style)
        vbox.addLayout(hbox_marker_style)

        self.setLayout(vbox)

        self.widgets2disable = [
            self.lbl_color_select, self.lbl_color_unselect, self.cb_auto_hide,
            self.txt_line_width, self.txt_line_width_select,
            self.combo_line_style, self.cb_show_connected,
            self.txt_marker_size, self.combo_marker_style, self.cb_drag_vline,
            self.cb_drag_hline, self.cb_selectable_vline,
            self.cb_selectable_hline, self.cb_show_hlines, self.cb_show_vlines
        ]

        self.fill_markerstyles()

        self.tb_actions = []

        # ---------------------------------------------------------------------
        # ---------------------------- connections ----------------------------
        # ---------------------------------------------------------------------

        self.lbl_color_select.color_changed.connect(self.change_select_colors)
        self.lbl_color_unselect.color_changed.connect(
            self.change_unselect_colors)
        self.txt_line_width.textChanged.connect(self.change_line_widths)
        self.txt_line_width_select.textChanged.connect(
            self.change_selection_line_widths)
        self.cb_auto_hide.stateChanged.connect(self.change_auto_hide)
        self.combo_marker_style.currentIndexChanged.connect(
            self.change_marker_style)
        self.combo_line_style.currentIndexChanged.connect(
            self.change_line_style)
        self.txt_marker_size.textChanged.connect(self.change_marker_size)
        self.cb_show_connected.stateChanged.connect(
            self.change_show_connected_artists)
        self.cb_drag_hline.stateChanged.connect(self.change_hline_draggable)
        self.cb_drag_vline.stateChanged.connect(self.change_vline_draggable)
        self.cb_selectable_hline.stateChanged.connect(
            self.change_hline_selectable)
        self.cb_selectable_vline.stateChanged.connect(
            self.change_vline_selectable)
        self.cb_show_vlines.stateChanged.connect(self.change_show_vlines)
        self.cb_show_hlines.stateChanged.connect(self.change_show_hlines)

    def draw_figs(self):
        """Draw the figures of the :attr:`marks`"""
        for canvas in {m.fig.canvas for m in self.marks}:
            canvas.draw_idle()

    def fill_linestyles(self):
        """Fill the :attr:`combo_line_style` combobox"""
        self.line_styles = [('-', 'solid'), ('--', 'dashed'),
                            ('-.', 'dashdot'), (':', 'dotted'),
                            ('None', None, '', ' ')]
        self.combo_line_style.addItems([t[0] for t in self.line_styles])

    def fill_markerstyles(self):
        """Fill the :attr:`combo_marker_style` combobox"""
        self.marker_styles = [('point', (".", )), ('pixel', (",", )),
                              ('circle', ("o", )),
                              ('triangle down', ("v", "1")),
                              ('triangle up', ("^", "2")),
                              ('triangle left', ("<", "3")),
                              ('triangle right', (">", "4")),
                              ('octagon', ("8", )), ('square', ("s", )),
                              ('pentagon', ("p", )),
                              ('plus (filled)', ("P", )), ('star', ("*", )),
                              ('hexagon1', ("h", )), ('hexagon2', ("H", )),
                              ('plus', ("+", )), ('x', ("x", )),
                              ('x (filled)', ("X", )), ('diamond', ("D", )),
                              ('thin diamond', ("d", )), ('vline', ("|", )),
                              ('hline', ("_", )),
                              ('no marker', ('None', None, '', ' '))]
        self.combo_marker_style.addItems([
            '%s (%s)' % (key.capitalize(), ','.join(map(str, filter(None, t))))
            for key, t in self.marker_styles
        ])

    def set_marker_item(self, marker):
        """Switch the :attr:`combo_marker_style` to the given `marker`

        Parameters
        ----------
        marker: str
            A matplotlib marker string"""
        for i, (key, t) in enumerate(self.marker_styles):
            if marker in t:
                block = self.combo_marker_style.blockSignals(True)
                self.combo_marker_style.setCurrentIndex(i)
                self.combo_marker_style.blockSignals(block)
                break

    def set_line_style_item(self, ls):
        """Switch the :attr:`combo_line_style` to the given linestyle

        Parameters
        ----------
        ls: str
            The matplotlib linestyle string
        """
        for i, t in enumerate(self.line_styles):
            if ls in t:
                block = self.combo_line_style.blockSignals(True)
                self.combo_line_style.setCurrentIndex(i)
                self.combo_line_style.blockSignals(block)
                break

    def should_be_enabled(self, w):
        """Check if a widget `w` should be enabled or disabled

        Parameters
        ----------
        w: PyQt5.QtWidgets.QWidget
            The widget to (potentially) enable

        Returns
        -------
        bool
            True if the :attr:`straditizer` of this instance has marks.
            Otherwise False"""
        return self.straditizer is not None and bool(self.straditizer.marks)

    def change_select_colors(self, color):
        """Change the selection color of the marks

        Change the selection color of the marks to the given color.

        Parameters
        ----------
        color: PyQt5.QtGui.QColor or a matplotlib color
            The color to use
        """
        if isinstance(color, QtGui.QColor):
            color = np.array(color.getRgb()) / 255.
        for mark in self.marks:
            key = 'color' if 'color' in mark._select_props else 'c'
            mark._select_props[key] = color
            mark._unselect_props[key] = mark.hline.get_c()
        self.draw_figs()

    def change_unselect_colors(self, color):
        """Change the :attr:`straditize.cross_mark.CrossMark.cunselect` color

        Change the unselection color of the marks to the given color.

        Parameters
        ----------
        color: PyQt5.QtGui.QColor or a matplotlib color
            The color to use
        """
        if isinstance(color, QtGui.QColor):
            color = np.array(color.getRgb()) / 255.
        for mark in self.marks:
            key = 'color' if 'color' in mark._unselect_props else 'c'
            mark._unselect_props[key] = color
            for l in chain(mark.hlines, mark.vlines, mark.line_connections):
                l.set_color(color)
        self.draw_figs()

    def change_line_widths(self, lw):
        """Change the linewidth of the marks

        Parameters
        ----------
        lw: float
            The line width to use
        """
        lw = float(lw or 0)
        for mark in self.marks:
            key = 'lw' if 'lw' in mark._unselect_props else 'linewidth'
            mark._unselect_props[key] = lw
            if not mark.auto_hide:
                for l in chain(mark.hlines, mark.vlines,
                               mark.line_connections):
                    l.set_lw(lw)
        self.draw_figs()

    def change_selection_line_widths(self, lw):
        """Change the linewidth for selected marks

        Parameters
        ----------
        lw: float
            The linewidth for selected marks"""
        lw = float(lw or 0)
        for mark in self.marks:
            key = 'lw' if 'lw' in mark._select_props else 'linewidth'
            mark._select_props[key] = lw

    def change_auto_hide(self, auto_hide):
        """Toggle the :attr:`~straditize.cross_mark.CrossMark.auto_hide`

        This method disables or enables the
        :attr:`~straditize.cross_mark.CrossMark.auto_hide` of the marks

        Parameters
        ----------
        auto_hide: bool or PyQt5.QtGui.Qt.Checked or PyQt5.QtGui.Qt.Unchecked
            The value to use for the auto_hide. :data:`PyQt5.QtGui.Qt.Checked`
            is equivalent to ``True``
        """
        if auto_hide is Qt.Checked:
            auto_hide = True
        elif auto_hide is Qt.Unchecked:
            auto_hide = False
        for mark in self.marks:
            mark.auto_hide = auto_hide
            if auto_hide:
                for l in chain(mark.hlines, mark.vlines,
                               mark.line_connections):
                    l.set_lw(0)
            else:
                lw = mark._unselect_props.get(
                    'lw', mark._unselect_props.get('linewidth'))
                for l in chain(mark.hlines, mark.vlines,
                               mark.line_connections):
                    l.set_lw(lw)
        self.draw_figs()

    def change_show_connected_artists(self, show):
        """Change the visibility of connected artists

        Parameters
        ----------
        show: bool
            The visibility for the
            :meth:`straditize.cross_mark.CrossMarks.set_connected_artists_visible`
            method"""
        if show is Qt.Checked:
            show = True
        elif show is Qt.Unchecked:
            show = False
        for mark in self.marks:
            mark.set_connected_artists_visible(show)
        self.draw_figs()

    def change_line_style(self, i):
        """Change the line style of the marks

        Parameters
        ----------
        i: int
            The index of the line style in the :attr:`line_styles` attribute
            to use
        """
        ls = self.line_styles[i][0]
        for mark in self.marks:
            for l in chain(mark.hlines, mark.vlines, mark.line_connections):
                l.set_ls(ls)
        self.draw_figs()

    def change_marker_style(self, i):
        """Change the marker style of the marks

        Parameters
        ----------
        i: int
            The index of the marker style in the :attr:`marker_styles`
            attribute to use
        """
        marker = self.marker_styles[i][1][0]
        for mark in self.marks:
            for l in chain(mark.hlines, mark.vlines, mark.line_connections):
                l.set_marker(marker)
        self.draw_figs()

    def change_marker_size(self, markersize):
        """Change the size of the markers

        Parameters
        ----------
        markersize: float
            The size of the marker to use"""
        markersize = float(markersize or 0)
        for mark in self.marks:
            for l in chain(mark.hlines, mark.vlines, mark.line_connections):
                l.set_markersize(markersize)
        self.draw_figs()

    def fill_from_mark(self, mark):
        """Set the widgets of this :class:`MarkerControl` from a mark

        This method sets the color labels, combo boxes, check boxes and
        text edits to match the properties of the given `mark`

        Parameters
        ----------
        mark: straditize.cross_mark.CrossMark
            The mark to use the attributes from
        """
        line = mark.hline
        try:
            cselect = mark._select_props['c']
        except KeyError:
            try:
                cselect = mark._select_props['color']
            except KeyError:
                cselect = mark.hline.get_c()
        lw_key = 'lw' if 'lw' in mark._unselect_props else 'linewidth'
        self.set_line_style_item(line.get_linestyle())
        self.set_marker_item(line.get_marker())
        self.txt_line_width.setText(str(mark._unselect_props.get(lw_key, 0)))
        self.txt_line_width_select.setText(
            str(mark._select_props.get(lw_key, 0)))
        self.txt_marker_size.setText(str(line.get_markersize()))
        self.lbl_color_select._set_color(cselect)
        self.lbl_color_unselect._set_color(mark.hline.get_c())
        self.cb_auto_hide.setChecked(mark.auto_hide)
        self.cb_show_connected.setChecked(mark.show_connected_artists)
        try:
            mark.x
        except NotImplementedError:
            self.cb_drag_vline.setEnabled(False)
            self.cb_show_vlines.setEnabled(False)
            self.cb_selectable_vline.setEnabled(False)
        else:
            self.cb_drag_vline.setEnabled(True)
            self.cb_show_vlines.setEnabled(True)
            self.cb_selectable_vline.setEnabled(True)
        try:
            mark.y
        except NotImplementedError:
            self.cb_drag_hline.setEnabled(False)
            self.cb_show_hlines.setEnabled(False)
            self.cb_selectable_hline.setEnabled(False)
        else:
            self.cb_drag_hline.setEnabled(True)
            self.cb_show_hlines.setEnabled(True)
            self.cb_selectable_hline.setEnabled(True)
        self.cb_drag_hline.setChecked('h' in mark.draggable)
        self.cb_drag_vline.setChecked('v' in mark.draggable)
        self.cb_show_hlines.setChecked(not mark.hide_horizontal)
        self.cb_show_vlines.setChecked(not mark.hide_vertical)
        self.cb_selectable_hline.setChecked('h' in mark.selectable)
        self.cb_selectable_vline.setChecked('v' in mark.selectable)

    @property
    def line_props(self):
        """The properties of the lines as a :class:`dict`"""
        return {
            'ls':
            self.combo_line_style.currentText(),
            'marker':
            self.marker_styles[self.combo_marker_style.currentIndex()][1][0],
            'lw':
            float(self.txt_line_width.text().strip() or 0),
            'markersize':
            float(self.txt_marker_size.text().strip() or 0),
            'c':
            self.lbl_color_unselect.color.getRgbF(),
        }

    @property
    def select_props(self):
        """The properties of selected marks as a :class:`dict`"""
        return {
            'c': self.lbl_color_select.color.getRgbF(),
            'lw': float(self.txt_line_width_select.text().strip() or 0)
        }

    def update_mark(self, mark):
        """Update the properties of a mark to match the settings

        Parameters
        ----------
        mark: straditize.cross_mark.CrossMarks
            The mark to update
        """
        if len(self.straditizer.marks) < 2:
            return
        # line properties
        props = self.line_props
        mark._unselect_props.update(props)
        mark._select_props.update(self.select_props)

        # auto_hide
        auto_hide = self.cb_auto_hide.isChecked()
        mark.auto_hide = auto_hide
        if auto_hide:
            props['lw'] = 0

        # show_connected
        show_connected = self.cb_show_connected.isChecked()
        mark.set_connected_artists_visible(show_connected)

        # drag hline
        drag_hline = self.cb_drag_hline.isChecked()
        if drag_hline and 'h' not in mark.draggable:
            mark.draggable.append('h')
        elif not drag_hline and 'h' in mark.draggable:
            mark.draggable.remove('h')

        # drag vline
        drag_vline = self.cb_drag_vline.isChecked()
        if drag_vline and 'v' not in mark.draggable:
            mark.draggable.append('v')
        elif not drag_vline and 'v' in mark.draggable:
            mark.draggable.remove('v')

        # select hline
        select_hline = self.cb_selectable_hline.isChecked()
        if select_hline and 'h' not in mark.selectable:
            mark.selectable.append('h')
        elif not select_hline and 'h' in mark.selectable:
            mark.selectable.remove('h')

        # select hline
        select_vline = self.cb_selectable_vline.isChecked()
        if select_vline and 'v' not in mark.selectable:
            mark.selectable.append('v')
        elif not select_vline and 'v' in mark.selectable:
            mark.selectable.remove('v')

        show_horizontal = self.cb_show_hlines.isChecked()
        mark.hide_horizontal = ~show_horizontal
        show_vertical = self.cb_show_vlines.isChecked()
        mark.hide_vertical = ~show_vertical

        for l in chain(mark.hlines, mark.vlines):
            l.update(props)
        for l in mark.hlines:
            l.set_visible(show_horizontal)
        for l in mark.vlines:
            l.set_visible(show_vertical)

    def change_hline_draggable(self, state):
        """Enable or disable the dragging of horizontal lines

        Parameters
        ----------
        state: Qt.Checked or Qt.Unchecked
            If Qt.Checked, the horizontal lines can be dragged and dropped"""
        if state == Qt.Checked:
            for mark in self.marks:
                mark.draggable = np.unique(np.r_[['h'], mark.draggable])
        else:
            for mark in self.marks:
                mark.draggable = np.array(list(set(mark.draggable) - {'h'}))

    def change_hline_selectable(self, state):
        """Enable or disable the selection of horizontal lines

        Parameters
        ----------
        state: Qt.Checked or Qt.Unchecked
            If Qt.Checked, the horizontal lines can be selected"""
        if state == Qt.Checked:
            for mark in self.marks:
                mark.selectable = np.unique(np.r_[['h'], mark.selectable])
        else:
            for mark in self.marks:
                mark.selectable = np.array(list(set(mark.selectable) - {'h'}))

    def change_vline_draggable(self, state):
        """Enable or disable the dragging of vertical lines

        Parameters
        ----------
        state: Qt.Checked or Qt.Unchecked
            If Qt.Checked, the vertical lines can be dragged and dropped"""
        if state == Qt.Checked:
            for mark in self.marks:
                mark.draggable = np.unique(np.r_[['v'], mark.draggable])
        else:
            for mark in self.marks:
                mark.draggable = np.array(list(set(mark.draggable) - {'v'}))

    def change_vline_selectable(self, state):
        """Enable or disable the selection of vertical lines

        Parameters
        ----------
        state: Qt.Checked or Qt.Unchecked
            If Qt.Checked, the vertical lines can be selected"""
        if state == Qt.Checked:
            for mark in self.marks:
                mark.selectable = np.unique(np.r_[['v'], mark.selectable])
        else:
            for mark in self.marks:
                mark.selectable = np.array(list(set(mark.selectable) - {'v'}))

    def change_show_hlines(self, state):
        """Enable of disable the visibility of horizontal lines

        Parameters
        ----------
        state: Qt.Checked or Qt.Unchecked
            If Qt.Checked, all horizontal lines are hidden"""
        if state == Qt.Checked:
            for mark in self.marks:
                mark.hide_horizontal = False
                mark.set_visible(True)
        else:
            for mark in self.marks:
                mark.hide_horizontal = True
                mark.set_visible(True)
        self.draw_figs()

    def change_show_vlines(self, state):
        """Enable of disable the visibility of vertical lines

        Parameters
        ----------
        state: Qt.Checked or Qt.Unchecked
            If Qt.Checked, all vertical lines are hidden"""
        if state == Qt.Checked:
            for mark in self.marks:
                mark.hide_vertical = False
                mark.set_visible(True)
        else:
            for mark in self.marks:
                mark.hide_vertical = True
                mark.set_visible(True)
        self.draw_figs()

    def enable_or_disable_widgets(self, b):
        """Renabled to use the :meth:`refresh` method
        """
        self.refresh()

    def fill_after_adding(self, mark):
        if not self._filled:
            self.refresh()

    def go_to_right_mark(self):
        """Move the plot to the next right cross mark"""
        ax = self.straditizer.marks[0].ax
        if ax.xaxis_inverted():
            return self.go_to_smaller_x_mark(min(ax.get_xlim()))
        else:
            return self.go_to_greater_x_mark(max(ax.get_xlim()))

    def go_to_left_mark(self):
        """Move the plot to the previous left cross mark"""
        ax = self.straditizer.marks[0].ax
        if ax.xaxis_inverted():
            return self.go_to_greater_x_mark(max(ax.get_xlim()))
        else:
            return self.go_to_smaller_x_mark(min(ax.get_xlim()))

    def go_to_greater_x_mark(self, x):
        """Move the plot to the next mark with a x-position greater than `x`

        Parameters
        ----------
        x: float
            The reference x-position that shall be smaller than the new
            centered mark"""
        def is_visible(mark):
            return (np.searchsorted(np.sort(xlim),
                                    mark.xa) == 1).any() and (np.searchsorted(
                                        np.sort(ylim), mark.ya) == 1).any()

        ax = next(self.marks).ax
        xlim = np.asarray(ax.get_xlim())
        ylim = np.asarray(ax.get_ylim())
        marks = self.straditizer.marks
        if len(marks[0].xa) > 1:
            # get the mark in the center
            yc = ylim.mean()
            try:
                mark = min(filter(is_visible, marks),
                           key=lambda m: np.abs(m.ya - yc).min())
            except ValueError:  # empty sequence
                mark = min(marks, key=lambda m: np.abs(m.ya - yc).min())
            # if all edges are visible already, we return
            if (np.searchsorted(xlim, mark.xa) == 1).all():
                return
            mask = mark.xa > x
            if not mask.any():  # already on the right side
                return
            i = mark.xa[mask].argmin()
            x = mark.xa[mask][i]
            dx = np.diff(xlim) / 2.
            ax.set_xlim(x - dx, x + dx)
            ax.set_ylim(*ax.get_ylim())
        else:
            distances = ((mark.xa > x).any()
                         and (mark.xa[mark.xa > x] - x).min()
                         for mark in marks)
            try:
                dist, mark = min((t for t in zip(distances, marks) if t[0]),
                                 key=lambda t: t[0])
            except ValueError:  # empty sequence
                return
            mask = mark.xa > x
            i = mark.xa[mask].argmin()
            x = mark.xa[mask][i]
            j = np.abs(mark.ya - ylim.mean()).argmin()
            y = mark.ya[j]
            dx = np.diff(xlim) / 2.
            ax.set_xlim(x - dx, x + dx)
            dy = np.diff(ylim) / 2.
            ax.set_ylim(y - dy, y + dy)
        self.straditizer.draw_figure()

    def go_to_smaller_x_mark(self, x):
        """Move the plot to the next mark with a x-position smaller than `x`

        Parameters
        ----------
        x: float
            The reference x-position that shall be greater than the new
            centered mark"""
        def is_visible(mark):
            return (np.searchsorted(np.sort(xlim),
                                    mark.xa) == 1).any() and (np.searchsorted(
                                        np.sort(ylim), mark.ya) == 1).any()

        ax = next(self.marks).ax
        xlim = np.asarray(ax.get_xlim())
        ylim = np.asarray(ax.get_ylim())
        marks = self.straditizer.marks
        if len(marks[0].xa) > 1:
            # get the mark in the center
            yc = ylim.mean()
            try:
                mark = min(filter(is_visible, marks),
                           key=lambda m: np.abs(m.ya - yc).min())
            except ValueError:  # empty sequence
                mark = min(marks, key=lambda m: np.abs(m.ya - yc).min())
            # if all edges are visible already, we return
            if (np.searchsorted(xlim, mark.xa) == 1).all():
                return
            mask = mark.xa < x
            if not mask.any():  # already on the right side
                return
            i = mark.xa[mask].argmin()
            x = mark.xa[mask][i]
            dx = np.diff(xlim) / 2.
            ax.set_xlim(x - dx, x + dx)
            ax.set_ylim(*ax.get_ylim())
        else:
            distances = ((mark.xa < x).any()
                         and (mark.xa[mark.xa < x] - x).min()
                         for mark in marks)
            try:
                dist, mark = min((t for t in zip(distances, marks) if t[0]),
                                 key=lambda t: t[0])
            except ValueError:  # empty sequence
                return
            mask = mark.xa < x
            i = mark.xa[mask].argmin()
            x = mark.xa[mask][i]
            j = np.abs(mark.ya - ylim.mean()).argmin()
            y = mark.ya[j]
            dx = np.diff(xlim) / 2.
            ax.set_xlim(x - dx, x + dx)
            dy = np.diff(ylim) / 2.
            ax.set_ylim(y - dy, y + dy)
        self.straditizer.draw_figure()

    def go_to_upper_mark(self):
        """Go to the next mark above the current y-limits"""
        ax = self.straditizer.marks[0].ax
        if ax.xaxis_inverted():
            return self.go_to_greater_y_mark(max(ax.get_ylim()))
        else:
            return self.go_to_smaller_y_mark(min(ax.get_ylim()))

    def go_to_lower_mark(self):
        """Go to the next mark below the current y-limits"""
        ax = self.straditizer.marks[0].ax
        if ax.xaxis_inverted():
            return self.go_to_smaller_y_mark(min(ax.get_ylim()))
        else:
            return self.go_to_greater_y_mark(max(ax.get_ylim()))

    def go_to_greater_y_mark(self, y):
        """Move the plot to the next mark with a y-position greater than `y`

        Parameters
        ----------
        y: float
            The reference y-position that shall be smaller than the new
            centered mark"""
        def is_visible(mark):
            return (np.searchsorted(np.sort(xlim),
                                    mark.xa) == 1).any() and (np.searchsorted(
                                        np.sort(ylim), mark.ya) == 1).any()

        ax = next(self.marks).ax
        xlim = np.asarray(ax.get_xlim())
        ylim = np.asarray(ax.get_ylim())
        marks = self.straditizer.marks
        if len(marks[0].ya) > 1:
            # get the mark in the center
            xc = xlim.mean()
            try:
                mark = min(filter(is_visible, marks),
                           key=lambda m: np.abs(m.xa - xc).min())
            except ValueError:  # empty sequence
                mark = min(marks, key=lambda m: np.abs(m.xa - xc).min())
            # if all edges are visible already, we return
            if (np.searchsorted(ylim, mark.ya) == 1).all():
                return
            mask = mark.ya > y
            if not mask.any():  # already on the right side
                return
            i = mark.ya[mask].argmin()
            y = mark.ya[mask][i]
            dy = np.diff(ylim) / 2.
            ax.set_ylim(y - dy, y + dy)
        else:
            distances = ((mark.ya > y).any()
                         and (mark.xa[mark.ya > y] - y).min()
                         for mark in marks)
            try:
                dist, mark = min((t for t in zip(distances, marks) if t[0]),
                                 key=lambda t: t[0])
            except ValueError:  # empty sequence
                return
            mask = mark.ya > y
            i = mark.ya[mask].argmin()
            y = mark.ya[mask][i]
            j = np.abs(mark.xa - xlim.mean()).argmin()
            x = mark.xa[j]
            dx = np.diff(xlim) / 2.
            ax.set_xlim(x - dx, x + dx)
            dy = np.diff(ylim) / 2.
            ax.set_ylim(y - dy, y + dy)
        self.straditizer.draw_figure()

    def go_to_smaller_y_mark(self, y):
        """Move the plot to the next mark with a y-position smaller than `x`

        Parameters
        ----------
        y: float
            The reference y-position that shall be smaller than the new
            centered mark"""
        def is_visible(mark):
            return (np.searchsorted(np.sort(xlim),
                                    mark.xa) == 1).any() and (np.searchsorted(
                                        np.sort(ylim), mark.ya) == 1).any()

        ax = next(self.marks).ax
        xlim = np.asarray(ax.get_xlim())
        ylim = np.asarray(ax.get_ylim())
        marks = self.straditizer.marks
        if len(marks[0].ya) > 1:
            # get the mark in the center
            xc = xlim.mean()
            try:
                mark = min(filter(is_visible, marks),
                           key=lambda m: np.abs(m.xa - xc).min())
            except ValueError:  # empty sequence
                mark = min(marks, key=lambda m: np.abs(m.xa - xc).min())
            # if all edges are visible already, we return
            if (np.searchsorted(ylim, mark.ya) == 1).all():
                return
            mask = mark.ya < y
            if not mask.any():  # already on the right side
                return
            i = mark.ya[mask].argmin()
            y = mark.ya[mask][i]
            dy = np.diff(ylim) / 2.
            ax.set_ylim(y - dy, y + dy)
        else:
            distances = ((mark.ya < y).any()
                         and (mark.ya[mark.ya < y] - y).min()
                         for mark in marks)
            try:
                dist, mark = min((t for t in zip(distances, marks) if t[0]),
                                 key=lambda t: t[0])
            except ValueError:  # empty sequence
                return
            mask = mark.ya < y
            i = mark.ya[mask].argmin()
            y = mark.ya[mask][i]
            j = np.abs(mark.xa - xlim.mean()).argmin()
            x = mark.xa[j]
            dx = np.diff(xlim) / 2.
            ax.set_xlim(x - dx, x + dx)
            dy = np.diff(ylim) / 2.
            ax.set_ylim(y - dy, y + dy)
        self.straditizer.draw_figure()

    def add_toolbar_widgets(self, mark):
        """Add the navigation actions to the toolbar"""
        tb = self.straditizer.marks[0].ax.figure.canvas.toolbar
        if not isinstance(tb, QToolBar):
            return
        if self.tb_actions:
            self.remove_actions()

        self.tb_actions.append(tb.addSeparator())
        try:
            mark.x
        except NotImplementedError:
            add_right = False
        else:
            a = tb.addAction(QIcon(get_icon('left_mark.png')), 'left mark',
                             self.go_to_left_mark)
            a.setToolTip('Move to the next cross mark on the left')
            self.tb_actions.append(a)
            add_right = True

        try:
            mark.y
        except NotImplementedError:
            pass
        else:
            a = tb.addAction(QIcon(get_icon('upper_mark.png')), 'upper mark',
                             self.go_to_upper_mark)
            a.setToolTip('Move to the next cross mark above')
            self.tb_actions.append(a)

            a = tb.addAction(QIcon(get_icon('lower_mark.png')), 'lower mark',
                             self.go_to_lower_mark)
            a.setToolTip('Move to the next cross mark below')
            self.tb_actions.append(a)

        if add_right:
            a = tb.addAction(QIcon(get_icon('right_mark.png')), 'right mark',
                             self.go_to_right_mark)
            a.setToolTip('Move to the next cross mark on the right')
            self.tb_actions.append(a)
        self._toolbar = tb

    def remove_actions(self):
        """Remove the navigation actions from the toolbar"""
        if self._toolbar is None:
            return
        tb = self._toolbar
        for a in self.tb_actions:
            tb.removeAction(a)
        self.tb_actions.clear()

    def refresh(self):
        """Reimplemented to also set the properties of this widget
        """
        super(MarkerControl, self).refresh()
        if self.straditizer is not None and self.straditizer.marks:
            self._filled = True
            mark = self.straditizer.marks[0]
            self.fill_from_mark(mark)
            self.add_toolbar_widgets(mark)
        else:
            self.remove_actions()
            self._filled = False
        if self.straditizer is not None:
            self.straditizer.mark_added.connect(self.fill_after_adding)
            self.straditizer.mark_added.connect(self.update_mark)
Example #3
0
class StraditizerWidgets(QWidget, DockMixin):
    """A widget that contains widgets to control the straditization in a GUI

    This widget is the basis of the straditize GUI and implemented as a
    plugin into the psyplot gui. The open straditizers are handled in the
    :attr:`_straditizer` attribute.

    The central parts of this widget are

    - The combobox to manage the open straditizers
    - The QTreeWidget in the :attr:`tree` attribute that contains all the
      controls to interface the straditizer
    - the tutorial area
    - the :guilabel:`Apply` and :guilabel:`Cancel` button"""

    #: Boolean that is True if all dialogs should be answered with `Yes`
    always_yes = False

    #: The QTreeWidget that contains the different widgets for the digitization
    tree = None

    #: The apply button
    apply_button = None

    #: The cancel button
    cancel_button = None

    #: The button to edit the straditizer attributes
    attrs_button = None

    #: The button to start a tutorial
    tutorial_button = None

    #: An :class:`InfoButton` to display the docs
    info_button = None

    #: A QComboBox to select the current straditizer
    stradi_combo = None

    #: A button to open a new straditizer
    btn_open_stradi = None

    #: A button to close the current straditizer
    btn_close_stradi = None

    #: A button to reload the last autosaved state
    btn_reload_autosaved = None

    #: The :class:`straditize.widgets.progress_widget.ProgressWidget` to
    #: display the progress of the straditization
    progress_widget = None

    #: The :class:`straditize.widgets.data.DigitizingControl` to interface
    #: the :straditize.straditizer.Straditizer.data_reader`
    digitizer = None

    #: The :class:`straditize.widgets.colnames.ColumnNamesManager` to interface
    #: the :straditize.straditizer.Straditizer.colnames_reader`
    colnames_manager = None

    #: The :class:`straditize.widgets.axes_translations.AxesTranslations` to
    #: handle the y- and x-axis conversions
    axes_translations = None

    #: The :class:`straditize.widgets.image_correction.ImageRescaler` class to
    #: rescale the image
    image_rescaler = None

    #: The :class:`straditize.widgets.image_correction.ImageRotator` class to
    #: rotate the image
    image_rotator = None

    #: The :class:`straditize.widgets.plots.PlotControl` to display additional
    #: information on the diagram
    plot_control = None

    #: The :class:`straditize.widgets.marker_control.MarkerControl` to modify
    #: the appearance of the :class:`~straditize.straditizer.Straditizer.marks`
    #: of the current straditizer
    marker_control = None

    #: The :class:`straditize.widgets.selection_toolbar.SelectionToolbar` to
    #: select features in the stratigraphic diagram
    selection_toolbar = None

    #: The :class:`straditize.straditizer.Straditizer` instance
    straditizer = None

    #: open straditizers
    _straditizers = []

    #: The :class:`straditize.widgets.tutorial.Tutorial` class
    tutorial = None

    dock_position = Qt.LeftDockWidgetArea

    #: Auto-saved straditizers
    autosaved = []

    hidden = True

    title = 'Stratigraphic diagram digitization'

    window_layout_action = None

    open_external = QtCore.pyqtSignal(list)

    def __init__(self, *args, **kwargs):
        from straditize.widgets.menu_actions import StraditizerMenuActions
        from straditize.widgets.progress_widget import ProgressWidget
        from straditize.widgets.data import DigitizingControl
        from straditize.widgets.selection_toolbar import SelectionToolbar
        from straditize.widgets.marker_control import MarkerControl
        from straditize.widgets.plots import PlotControl
        from straditize.widgets.axes_translations import AxesTranslations
        from straditize.widgets.image_correction import (ImageRotator,
                                                         ImageRescaler)
        from straditize.widgets.colnames import ColumnNamesManager
        self._straditizers = []
        super(StraditizerWidgets, self).__init__(*args, **kwargs)
        self.tree = QTreeWidget(parent=self)
        self.tree.setSelectionMode(QTreeWidget.NoSelection)
        self.refresh_button = QToolButton(self)
        self.refresh_button.setIcon(QIcon(get_psy_icon('refresh.png')))
        self.refresh_button.setToolTip('Refresh from the straditizer')
        self.apply_button = EnableButton('Apply', parent=self)
        self.cancel_button = EnableButton('Cancel', parent=self)
        self.attrs_button = QPushButton('Attributes', parent=self)
        self.tutorial_button = QPushButton('Tutorial', parent=self)
        self.tutorial_button.setCheckable(True)
        self.error_msg = PyErrorMessage(self)
        self.stradi_combo = QComboBox()
        self.btn_open_stradi = QToolButton()
        self.btn_open_stradi.setIcon(QIcon(get_psy_icon('run_arrow.png')))
        self.btn_close_stradi = QToolButton()
        self.btn_close_stradi.setIcon(QIcon(get_psy_icon('invalid.png')))
        self.btn_reload_autosaved = QPushButton("Reload")
        self.btn_reload_autosaved.setToolTip(
            "Close the straditizer and reload the last autosaved project")

        # ---------------------------------------------------------------------
        # --------------------------- Tree widgets ----------------------------
        # ---------------------------------------------------------------------
        self.tree.setHeaderLabels(['', ''])
        self.tree.setColumnCount(2)

        self.progress_item = QTreeWidgetItem(0)
        self.progress_item.setText(0, 'ToDo list')
        self.progress_widget = ProgressWidget(self, self.progress_item)

        self.menu_actions_item = QTreeWidgetItem(0)
        self.menu_actions_item.setText(0, 'Images import/export')
        self.tree.addTopLevelItem(self.menu_actions_item)
        self.menu_actions = StraditizerMenuActions(self)

        self.digitizer_item = item = QTreeWidgetItem(0)
        item.setText(0, 'Digitization control')
        self.digitizer = DigitizingControl(self, item)

        self.col_names_item = item = QTreeWidgetItem(0)
        item.setText(0, 'Column names')
        self.colnames_manager = ColumnNamesManager(self, item)
        self.add_info_button(item, 'column_names.rst')

        self.axes_translations_item = item = QTreeWidgetItem(0)
        item.setText(0, 'Axes translations')
        self.axes_translations = AxesTranslations(self, item)

        self.image_transform_item = item = QTreeWidgetItem(0)
        item.setText(0, 'Transform source image')

        self.image_rescaler = ImageRescaler(self, item)

        self.image_rotator_item = item = QTreeWidgetItem(0)
        item.setText(0, 'Rotate image')
        self.image_rotator = ImageRotator(self)
        self.image_transform_item.addChild(item)
        self.image_rotator.setup_children(item)

        self.plot_control_item = item = QTreeWidgetItem(0)
        item.setText(0, 'Plot control')
        self.plot_control = PlotControl(self, item)
        self.add_info_button(item, 'plot_control.rst')

        self.marker_control_item = item = QTreeWidgetItem(0)
        item.setText(0, 'Marker control')
        self.marker_control = MarkerControl(self, item)
        self.add_info_button(item, 'marker_control.rst')

        # ---------------------------------------------------------------------
        # ----------------------------- Toolbars ------------------------------
        # ---------------------------------------------------------------------
        self.selection_toolbar = SelectionToolbar(self, 'Selection toolbar')

        # ---------------------------------------------------------------------
        # ----------------------------- InfoButton ----------------------------
        # ---------------------------------------------------------------------
        self.info_button = InfoButton(self, get_doc_file('straditize.rst'))

        # ---------------------------------------------------------------------
        # --------------------------- Layouts ---------------------------------
        # ---------------------------------------------------------------------

        stradi_box = QHBoxLayout()
        stradi_box.addWidget(self.stradi_combo, 1)
        stradi_box.addWidget(self.btn_open_stradi)
        stradi_box.addWidget(self.btn_close_stradi)

        attrs_box = QHBoxLayout()
        attrs_box.addWidget(self.attrs_button)
        attrs_box.addStretch(0)
        attrs_box.addWidget(self.tutorial_button)

        btn_box = QHBoxLayout()
        btn_box.addWidget(self.refresh_button)
        btn_box.addWidget(self.info_button)
        btn_box.addStretch(0)
        btn_box.addWidget(self.apply_button)
        btn_box.addWidget(self.cancel_button)

        reload_box = QHBoxLayout()
        reload_box.addWidget(self.btn_reload_autosaved)
        reload_box.addStretch(0)

        vbox = QVBoxLayout()
        vbox.addLayout(stradi_box)
        vbox.addWidget(self.tree)
        vbox.addLayout(attrs_box)
        vbox.addLayout(btn_box)
        vbox.addLayout(reload_box)

        self.setLayout(vbox)

        self.apply_button.setEnabled(False)
        self.cancel_button.setEnabled(False)
        self.tree.expandItem(self.progress_item)
        self.tree.expandItem(self.digitizer_item)

        # ---------------------------------------------------------------------
        # --------------------------- Connections -----------------------------
        # ---------------------------------------------------------------------
        self.stradi_combo.currentIndexChanged.connect(self.set_current_stradi)
        self.refresh_button.clicked.connect(self.refresh)
        self.attrs_button.clicked.connect(self.edit_attrs)
        self.tutorial_button.clicked.connect(self.start_tutorial)
        self.open_external.connect(self._create_straditizer_from_args)
        self.btn_open_stradi.clicked.connect(
            self.menu_actions.open_straditizer)
        self.btn_close_stradi.clicked.connect(self.close_straditizer)
        self.btn_reload_autosaved.clicked.connect(self.reload_autosaved)

        self.refresh()
        header = self.tree.header()
        header.setStretchLastSection(False)
        header.setSectionResizeMode(0, QHeaderView.Stretch)

    def disable_apply_button(self):
        """Method that is called when the :attr:`cancel_button` is clicked"""
        for w in [self.apply_button, self.cancel_button]:
            try:
                w.clicked.disconnect()
            except TypeError:
                pass
            w.setEnabled(False)
        self.apply_button.setText('Apply')
        self.cancel_button.setText('Cancel')
        self.refresh_button.setEnabled(True)

    def switch_to_straditizer_layout(self):
        """Switch to the straditizer layout

        This method makes this widget visible and stacks it with the psyplot
        content widget"""
        mainwindow = self.dock.parent()
        mainwindow.figures_tree.hide_plugin()
        mainwindow.ds_tree.hide_plugin()
        mainwindow.fmt_widget.hide_plugin()
        self.show_plugin()
        mainwindow.tabifyDockWidget(mainwindow.project_content.dock, self.dock)
        hsize = self.marker_control.sizeHint().width() + 50
        self.menu_actions.setup_shortcuts(mainwindow)
        if with_qt5:
            mainwindow.resizeDocks([self.dock], [hsize], Qt.Horizontal)
            self.tree.resizeColumnToContents(0)
            self.tree.resizeColumnToContents(1)
        self.info_button.click()

    def to_dock(self, main, *args, **kwargs):
        ret = super(StraditizerWidgets, self).to_dock(main, *args, **kwargs)
        if self.menu_actions.window_layout_action is None:
            main.window_layouts_menu.addAction(self.window_layout_action)
            main.callbacks['straditize'] = self.open_external.emit
            main.addToolBar(self.selection_toolbar)
            self.dock.toggleViewAction().triggered.connect(
                self.show_or_hide_toolbar)
            self.menu_actions.setup_menu_actions(main)
            self.menu_actions.setup_children(self.menu_actions_item)
            try:
                main.open_file_options['Straditize project'] = \
                    self.create_straditizer_from_args
            except AttributeError:  # psyplot-gui <= 1.1.0
                pass
        return ret

    def show_or_hide_toolbar(self):
        """Show or hide the toolbar depending on the visibility of this widget
        """
        self.selection_toolbar.setVisible(self.is_shown)

    def _create_straditizer_from_args(self, args):
        """A method that is called when the :attr:`psyplot_gui.main.mainwindow`
        receives a 'straditize' callback"""
        self.create_straditizer_from_args(*args)

    def create_straditizer_from_args(self,
                                     fnames,
                                     project=None,
                                     xlim=None,
                                     ylim=None,
                                     full=False,
                                     reader_type='area'):
        """Create a straditizer from the given file name

        This method is called when the :attr:`psyplot_gui.main.mainwindow`
        receives a 'straditize' callback"""
        fname = fnames[0]
        if fname is not None:
            self.menu_actions.open_straditizer(fname)
            stradi = self.straditizer
            if stradi is None:
                return
            if xlim is not None:
                stradi.data_xlim = xlim
            if ylim is not None:
                stradi.data_ylim = ylim
            if xlim is not None or ylim is not None or full:
                if stradi.data_xlim is None:
                    stradi.data_xlim = [0, np.shape(stradi.image)[1]]
                if stradi.data_ylim is None:
                    stradi.data_ylim = [0, np.shape(stradi.image)[0]]
                stradi.init_reader(reader_type)
                stradi.data_reader.digitize()
            self.refresh()
        if not self.is_shown:
            self.switch_to_straditizer_layout()
        return fname is not None

    def start_tutorial(self, state, tutorial_cls=None):
        """Start or stop the tutorial

        Parameters
        ----------
        state: bool
            If False, the tutorial is stopped. Otherwise it is started
        tutorial_cls: straditize.widgets.tutorial.beginner.Tutorial
            The tutorial class to use. If None, it will be asked in a
            QInputDialog"""
        if self.tutorial is not None or not state:
            self.tutorial.close()
            self.tutorial_button.setText('Tutorial')
        elif state:
            if tutorial_cls is None:
                tutorial_cls, ok = QInputDialog.getItem(
                    self,
                    'Start tutorial',
                    "Select the tutorial type",
                    ["Beginner", "Advanced (Hoya del Castillo)"],
                    editable=False)
                if not ok:
                    self.tutorial_button.blockSignals(True)
                    self.tutorial_button.setChecked(False)
                    self.tutorial_button.blockSignals(False)
                    return
                if tutorial_cls == 'Beginner':
                    from straditize.widgets.tutorial import Tutorial
                else:
                    from straditize.widgets.tutorial import (
                        HoyaDelCastilloTutorial as Tutorial)
            else:
                Tutorial = tutorial_cls
            self.tutorial = Tutorial(self)
            self.tutorial_button.setText('Stop tutorial')

    def edit_attrs(self):
        """Edit the attributes of the current straditizer

        This creates a new dataframe editor to edit the
        :attr:`straditize.straditizer.Straditizer.attrs` meta informations"""
        def add_attr(key):
            model = editor.table.model()
            n = len(attrs)
            model.insertRow(n)
            model.setData(model.index(n, 0), key)
            model.setData(model.index(n, 1), '', change_type=six.text_type)

        from psyplot_gui.main import mainwindow
        from straditize.straditizer import common_attributes
        attrs = self.straditizer.attrs
        editor = mainwindow.new_data_frame_editor(attrs,
                                                  'Straditizer attributes')
        editor.table.resizeColumnToContents(1)
        editor.table.horizontalHeader().setVisible(False)
        editor.table.frozen_table_view.horizontalHeader().setVisible(False)
        combo = QComboBox()
        combo.addItems([''] + common_attributes)
        combo.currentTextChanged.connect(add_attr)
        hbox = QHBoxLayout()
        hbox.addWidget(QLabel('Common attributes:'))
        hbox.addWidget(combo)
        hbox.addStretch(0)
        editor.layout().insertLayout(1, hbox)
        return editor, combo

    def refresh(self):
        """Refresh from the straditizer"""
        for i, stradi in enumerate(self._straditizers):
            self.stradi_combo.setItemText(
                i,
                self.get_attr(stradi, 'project_file')
                or self.get_attr(stradi, 'image_file') or '')
        # toggle visibility of close button and attributes button
        enable = self.straditizer is not None
        self.btn_close_stradi.setVisible(enable)
        self.attrs_button.setEnabled(enable)
        # refresh controls
        self.menu_actions.refresh()
        self.progress_widget.refresh()
        self.digitizer.refresh()
        self.selection_toolbar.refresh()
        self.plot_control.refresh()
        self.marker_control.refresh()
        self.axes_translations.refresh()
        if self.tutorial is not None:
            self.tutorial.refresh()
        self.image_rotator.refresh()
        self.image_rescaler.refresh()
        self.colnames_manager.refresh()
        self.btn_reload_autosaved.setEnabled(bool(self.autosaved))

    def get_attr(self, stradi, attr):
        try:
            return stradi.get_attr(attr)
        except KeyError:
            pass

    docstrings.delete_params('InfoButton.parameters', 'parent')

    @docstrings.get_sectionsf('StraditizerWidgets.add_info_button')
    @docstrings.with_indent(8)
    def add_info_button(self,
                        child,
                        fname=None,
                        rst=None,
                        name=None,
                        connections=[]):
        """Add an infobutton to the :attr:`tree` widget

        Parameters
        ----------
        child: QTreeWidgetItem
            The item to which to add the infobutton
        %(InfoButton.parameters.no_parent)s
        connections: list of QPushButtons
            Buttons that should be clicked when the info button is clicked"""
        button = InfoButton(self, fname=fname, rst=rst, name=name)
        self.tree.setItemWidget(child, 1, button)
        for btn in connections:
            btn.clicked.connect(button.click)
        return button

    def raise_figures(self):
        """Raise the figures of the current straditizer in the GUI"""
        from psyplot_gui.main import mainwindow
        if mainwindow.figures and self.straditizer:
            dock = self.straditizer.ax.figure.canvas.manager.window
            dock.widget().show_plugin()
            dock.raise_()
            if self.straditizer.magni is not None:
                dock = self.straditizer.magni.ax.figure.canvas.manager.window
                dock.widget().show_plugin()
                dock.raise_()

    def set_current_stradi(self, i):
        """Set the i-th straditizer to the current one"""
        if not self._straditizers:
            return
        self.straditizer = self._straditizers[i]
        self.menu_actions.set_stradi_in_console()
        block = self.stradi_combo.blockSignals(True)
        self.stradi_combo.setCurrentIndex(i)
        self.stradi_combo.blockSignals(block)
        self.raise_figures()
        self.refresh()
        self.autosaved.clear()

    def _close_stradi(self, stradi):
        """Close the given straditizer and all it's figures"""
        is_current = stradi is self.straditizer
        if is_current:
            self.selection_toolbar.disconnect()
        stradi.close()
        try:
            i = self._straditizers.index(stradi)
        except ValueError:
            pass
        else:
            del self._straditizers[i]
            self.stradi_combo.removeItem(i)
        if is_current and self._straditizers:
            self.stradi_combo.setCurrentIndex(0)
        elif not self._straditizers:
            self.straditizer = None
            self.refresh()
        self.digitizer.digitize_item.takeChildren()
        self.digitizer.btn_digitize.setChecked(False)
        self.digitizer.btn_digitize.setCheckable(False)
        self.digitizer.toggle_txt_tolerance('')

    def close_straditizer(self):
        """Close the current straditizer"""
        self._close_stradi(self.straditizer)

    def close_all_straditizers(self):
        """Close all straditizers"""
        self.selection_toolbar.disconnect()
        for stradi in self._straditizers:
            stradi.close()
        self._straditizers.clear()
        self.straditizer = None
        self.stradi_combo.clear()
        self.digitizer.digitize_item.takeChildren()
        self.digitizer.btn_digitize.setChecked(False)
        self.digitizer.btn_digitize.setCheckable(False)
        self.digitizer.toggle_txt_tolerance('')
        self.refresh()

    def add_straditizer(self, stradi):
        """Add a straditizer to the list of open straditizers"""
        if stradi and stradi not in self._straditizers:
            self._straditizers.append(stradi)
            self.stradi_combo.addItem(' ')
            self.set_current_stradi(len(self._straditizers) - 1)

    def reset_control(self):
        """Reset the GUI of straditize"""
        if getattr(self.selection_toolbar, '_pattern_selection', None):
            self.selection_toolbar._pattern_selection.remove_plugin()
            del self.selection_toolbar._pattern_selection
        if getattr(self.digitizer, '_samples_editor', None):
            self.digitizer._close_samples_fig()
        tb = self.selection_toolbar
        tb.set_label_wand_mode()
        tb.set_rect_select_mode()
        tb.new_select_action.setChecked(True)
        tb.select_action.setChecked(False)
        tb.wand_action.setChecked(False)
        self.disable_apply_button()
        self.close_all_straditizers()
        self.colnames_manager.reset_control()

    def autosave(self):
        """Autosave the current straditizer"""
        self.autosaved = [self.straditizer.to_dataset().copy(True)] + \
            self.autosaved[:4]

    def reload_autosaved(self):
        """Reload the autosaved straditizer and close the old one"""
        from straditize.straditizer import Straditizer
        if not self.autosaved:
            return
        answer = QMessageBox.question(
            self, 'Reload autosave',
            'Shall I reload the last autosaved stage? This will close the '
            'current figures.')
        if answer == QMessageBox.Yes:
            self.close_straditizer()
            stradi = Straditizer.from_dataset(self.autosaved.pop(0))
            self.menu_actions.finish_loading(stradi)
Example #4
0
class FormatoptionWidget(QWidget, DockMixin):
    """
    Widget to update the formatoptions of the current project

    This widget, mainly made out of a combobox for the formatoption group,
    a combobox for the formatoption, and a one-line text editor, is designed
    for updating the selected formatoptions for the current subproject.

    The widget is connected to the :attr:`psyplot.project.Project.oncpchange`
    signal and refills the comboboxes if the current subproject changes.

    The one-line text editor accepts python code that will be executed in side
    the given `shell`.
    """

    no_fmtos_update = _temp_bool_prop('no_fmtos_update',
                                      """update the fmto combo box or not""")

    #: The combobox for the formatoption groups
    group_combo = None

    #: The combobox for the formatoptions
    fmt_combo = None

    #: The help_explorer to display the documentation of the formatoptions
    help_explorer = None

    #: The shell to execute the update of the formatoptions in the current
    #: project
    shell = None

    def __init__(self, *args, **kwargs):
        """
        Parameters
        ----------
        help_explorer: psyplot_gui.help_explorer.HelpExplorer
            The help explorer to show the documentation of one formatoption
        shell: IPython.core.interactiveshell.InteractiveShell
            The shell that can be used to update the current subproject via::

                psy.gcp().update(**kwargs)

            where ``**kwargs`` is defined through the selected formatoption
            in the :attr:`fmt_combo` combobox and the value in the
            :attr:`line_edit` editor
        ``*args, **kwargs``
            Any other keyword for the QWidget class
        """
        help_explorer = kwargs.pop('help_explorer', None)
        shell = kwargs.pop('shell', None)
        super(FormatoptionWidget, self).__init__(*args, **kwargs)
        self.help_explorer = help_explorer
        self.shell = shell

        # ---------------------------------------------------------------------
        # -------------------------- Child widgets ----------------------------
        # ---------------------------------------------------------------------
        self.group_combo = QComboBox(parent=self)
        self.fmt_combo = QComboBox(parent=self)
        self.line_edit = QLineEdit(parent=self)
        self.run_button = QToolButton(parent=self)

        self.keys_button = QPushButton('Formatoption keys', parent=self)
        self.summaries_button = QPushButton('Summaries', parent=self)
        self.docs_button = QPushButton('Docs', parent=self)

        self.grouped_cb = QCheckBox('grouped', parent=self)
        self.all_groups_cb = QCheckBox('all groups', parent=self)
        self.include_links_cb = QCheckBox('include links', parent=self)

        # ---------------------------------------------------------------------
        # -------------------------- Descriptions -----------------------------
        # ---------------------------------------------------------------------

        self.group_combo.setToolTip('Select the formatoption group')
        self.fmt_combo.setToolTip('Select the formatoption to update')
        self.line_edit.setToolTip(
            'Insert the value which what you want to update the selected '
            'formatoption and hit right button. The code is executed in the '
            'main console.')
        self.run_button.setIcon(QIcon(get_icon('run_arrow.png')))
        self.run_button.setToolTip('Update the selected formatoption')
        self.keys_button.setToolTip(
            'Show the formatoption keys in this group (or in all '
            'groups) in the help explorer')
        self.summaries_button.setToolTip(
            'Show the formatoption summaries in this group (or in all '
            'groups) in the help explorer')
        self.docs_button.setToolTip(
            'Show the formatoption documentations in this group (or in all '
            'groups) in the help explorer')
        self.grouped_cb.setToolTip(
            'Group the formatoptions before displaying them in the help '
            'explorer')
        self.all_groups_cb.setToolTip('Use all groups when displaying the '
                                      'keys, docs or summaries')
        self.include_links_cb.setToolTip(
            'Include links to remote documentations when showing the '
            'keys, docs and summaries in the help explorer (requires '
            'intersphinx)')

        # ---------------------------------------------------------------------
        # -------------------------- Connections ------------------------------
        # ---------------------------------------------------------------------
        self.group_combo.currentIndexChanged[int].connect(self.fill_fmt_combo)
        self.fmt_combo.currentIndexChanged[int].connect(self.show_fmt_info)
        self.run_button.clicked.connect(self.run_code)
        self.line_edit.returnPressed.connect(self.run_button.click)
        self.keys_button.clicked.connect(
            partial(self.show_all_fmt_info, 'keys'))
        self.summaries_button.clicked.connect(
            partial(self.show_all_fmt_info, 'summaries'))
        self.docs_button.clicked.connect(
            partial(self.show_all_fmt_info, 'docs'))

        # ---------------------------------------------------------------------
        # ------------------------------ Layouts ------------------------------
        # ---------------------------------------------------------------------
        self.combos = QHBoxLayout()
        self.combos.addWidget(self.group_combo)
        self.combos.addWidget(self.fmt_combo)

        self.execs = QHBoxLayout()
        self.execs.addWidget(self.line_edit)
        self.execs.addWidget(self.run_button)

        self.info_box = QHBoxLayout()
        self.info_box.addStretch(0)
        for w in [
                self.keys_button, self.summaries_button, self.docs_button,
                self.all_groups_cb, self.grouped_cb, self.include_links_cb
        ]:
            self.info_box.addWidget(w)

        self.vbox = QVBoxLayout()
        self.vbox.addLayout(self.combos)
        self.vbox.addLayout(self.execs)
        self.vbox.addLayout(self.info_box)

        self.setLayout(self.vbox)

        # fill with content
        self.fill_combos_from_project(psy.gcp())
        psy.Project.oncpchange.connect(self.fill_combos_from_project)

    def fill_combos_from_project(self, project):
        """Fill :attr:`group_combo` and :attr:`fmt_combo` from a project

        Parameters
        ----------
        project: psyplot.project.Project
            The project to use"""
        current_text = self.group_combo.currentText()
        with self.no_fmtos_update:
            self.group_combo.clear()
            if project is None or project.is_main or not len(project.plotters):
                self.fmt_combo.clear()
                self.groups = []
                self.fmtos = []
                self.line_edit.setEnabled(False)
                return
            self.line_edit.setEnabled(True)
            # get dimensions
            coords = sorted(project.coords_intersect)
            coords_name = [COORDSGROUP] if coords else []
            coords_verbose = ['Dimensions'] if coords else []
            coords = [coords] if coords else []

            # get formatoptions and group them alphabetically
            grouped_fmts = defaultdict(list)
            for fmto in project._fmtos:
                grouped_fmts[fmto.group].append(fmto)
            for val in six.itervalues(grouped_fmts):
                val.sort(key=self.get_name)
            grouped_fmts = OrderedDict(
                sorted(six.iteritems(grouped_fmts),
                       key=lambda t: psyp.groups.get(t[0], t[0])))
            fmt_groups = list(grouped_fmts.keys())
            # save original names
            self.groups = coords_name + [ALLGROUP] + fmt_groups
            # save verbose group names (which are used in the combo box)
            self.groupnames = coords_verbose + ['All formatoptions'] + list(
                map(lambda s: psyp.groups.get(s, s), fmt_groups))
            # save formatoptions
            fmtos = list(grouped_fmts.values())
            self.fmtos = coords + [sorted(chain(*fmtos), key=self.get_name)
                                   ] + fmtos
            self.group_combo.addItems(self.groupnames)
            ind = self.group_combo.findText(current_text)
            self.group_combo.setCurrentIndex(ind if ind >= 0 else 0)
        self.fill_fmt_combo(self.group_combo.currentIndex())

    def get_name(self, fmto):
        """Get the name of a :class:`psyplot.plotter.Formatoption` instance"""
        if isinstance(fmto, six.string_types):
            return fmto
        return '%s (%s)' % (fmto.name, fmto.key) if fmto.name else fmto.key

    def fill_fmt_combo(self, i):
        """Fill the :attr:`fmt_combo` combobox based on the current group name
        """
        if not self.no_fmtos_update:
            with self.no_fmtos_update:
                current_text = self.fmt_combo.currentText()
                self.fmt_combo.clear()
                self.fmt_combo.addItems(list(map(self.get_name,
                                                 self.fmtos[i])))
                ind = self.fmt_combo.findText(current_text)
                self.fmt_combo.setCurrentIndex(ind if ind >= 0 else 0)
            self.show_fmt_info(self.fmt_combo.currentIndex())

    def show_fmt_info(self, i):
        """Show the documentation of the formatoption in the help explorer
        """
        group_ind = self.group_combo.currentIndex()
        if (not self.no_fmtos_update
                and self.groups[group_ind] != COORDSGROUP):
            fmto = self.fmtos[self.group_combo.currentIndex()][i]
            fmto.plotter.show_docs(
                fmto.key, include_links=self.include_links_cb.isChecked())

    def run_code(self):
        """Run the update of the project inside the :attr:`shell`"""
        text = str(self.line_edit.text())
        if not text or not self.fmtos:
            return
        group_ind = self.group_combo.currentIndex()
        if self.groups[group_ind] == COORDSGROUP:
            key = self.fmtos[group_ind][self.fmt_combo.currentIndex()]
            param = 'dims'
        else:
            key = self.fmtos[group_ind][self.fmt_combo.currentIndex()].key
            param = 'fmt'
        e = ExecutionResult()
        self.shell.run_code(
            "psy.gcp().update(%s={'%s': %s})" % (param, key, text), e)
        e.raise_error()

    def show_all_fmt_info(self, what):
        """Show the keys, summaries or docs of the formatoptions

        Calling this function let's the help browser show the documentation
        etc. of all docs or only the selected group determined by the state of
        the :attr:`grouped_cb` and :attr:`all_groups_cb` checkboxes

        Parameters
        ----------
        what: {'keys', 'summaries', 'docs'}
            Determines what to show"""
        if not self.fmtos:
            return
        if self.all_groups_cb.isChecked():
            fmtos = list(
                chain(*(fmto_group for i, fmto_group in enumerate(self.fmtos)
                        if not self.groups[i] in [ALLGROUP, COORDSGROUP])))
        else:
            if self.groups[self.group_combo.currentIndex()] == COORDSGROUP:
                return
            fmtos = self.fmtos[self.group_combo.currentIndex()]
        plotter = fmtos[0].plotter
        getattr(plotter, 'show_' +
                what)([fmto.key for fmto in fmtos],
                      grouped=self.grouped_cb.isChecked(),
                      include_links=self.include_links_cb.isChecked())
Example #5
0
class HelpExplorer(QWidget, DockMixin):
    """A widget for showing the documentation. It behaves somewhat similar
    to spyders object inspector plugin and can show restructured text either
    as html (if sphinx is installed) or as plain text. It furthermore has a
    browser to show html content

    Warnings
    --------
    The :class:`HelpBrowser` class is known to crash under PyQt4 when new web
    page domains are loaded. Hence you should disable the browsing to different
    remote websites and even disable intersphinx"""

    #: The viewer classes used by the help explorer. :class:`HelpExplorer`
    #: instances replace this attribute with the corresponding HelpMixin
    #: instance
    viewers = OrderedDict([('HTML help', UrlHelp), ('Plain text', TextHelp)])

    def __init__(self, *args, **kwargs):
        super(HelpExplorer, self).__init__(*args, **kwargs)
        self.vbox = vbox = QVBoxLayout()
        self.combo = QComboBox(parent=self)
        vbox.addWidget(self.combo)
        self.viewers = OrderedDict(
            [(key, cls(parent=self)) for key, cls in six.iteritems(
                self.viewers)])
        for key, ini in six.iteritems(self.viewers):
            self.combo.addItem(key)
            ini.hide()
            vbox.addWidget(ini)
        self.viewer = next(six.itervalues(self.viewers))
        self.viewer.show()
        self.combo.currentIndexChanged[str].connect(self.set_viewer)
        self.setLayout(vbox)

    def set_viewer(self, name):
        """Sets the current documentation viewer

        Parameters
        ----------
        name: str or object
            A string must be one of the :attr:`viewers` attribute. An object
            can be one of the values in the :attr:`viewers` attribute"""
        if isstring(name) and asstring(name) not in self.viewers:
            raise ValueError("Don't have a viewer named %s" % (name, ))
        elif not isstring(name):
            viewer = name
        else:
            name = asstring(name)
            viewer = self.viewers[name]
        self.viewer.hide()
        self.viewer = viewer
        self.viewer.show()
        if (isstring(name) and
                not self.combo.currentText() == name):
            self.combo.setCurrentIndex(list(self.viewers).index(name))

    @docstrings.dedent
    def show_help(self, obj, oname='', files=None):
        """
        Show the documentaion of the given object

        We first try to use the current viewer based upon it's
        :attr:`HelpMixin.can_document_object` attribute. If this does not work,
        we check the other viewers

        Parameters
        ----------
        %(HelpMixin.show_help.parameters)s"""
        oname = asstring(oname)
        ret = None
        if self.viewer.can_document_object:
            try:
                ret = self.viewer.show_help(obj, oname=oname, files=files)
            except Exception:
                logger.debug("Could not document %s with %s viewer!",
                             oname, self.combo.currentText(), exc_info=True)
        else:
            curr_i = self.combo.currentIndex()
            for i, (viewername, viewer) in enumerate(
                    six.iteritems(self.viewers)):
                if i != curr_i and viewer.can_document_object:
                    self.set_viewer(viewername)
                    self.combo.blockSignals(True)
                    self.combo.setCurrentIndex(i)
                    self.combo.blockSignals(False)
                    try:
                        ret = viewer.show_help(obj, oname=oname, files=files)
                    except Exception:
                        logger.debug("Could not document %s with %s viewer!",
                                     oname, viewername, exc_info=True)
        if ret:
            self.parent().raise_()
        return ret

    @docstrings.dedent
    def show_rst(self, text, oname='', files=None):
        """
        Show restructured text

        We first try to use the current viewer based upon it's
        :attr:`HelpMixin.can_show_rst` attribute. If this does not work,
        we check the other viewers

        Parameters
        ----------
        %(HelpMixin.show_rst.parameters)s"""
        ret = None
        if self.viewer.can_show_rst:
            ret = self.viewer.show_rst(text, oname=oname, files=files)
        else:
            for viewer in six.itervalues(self.viewers):
                if viewer.can_show_rst:
                    self.set_viewer(viewer)
                    ret = viewer.show_rst(text, oname=oname, files=files)
                    break
        if ret:
            self.parent().raise_()
        return ret

    @docstrings.dedent
    def show_intro(self, text=''):
        """
        Show an intro text

        We first try to use the current viewer based upon it's
        :attr:`HelpMixin.can_show_rst` attribute. If this does not work,
        we check the other viewers

        Parameters
        ----------
        %(HelpMixin.show_intro.parameters)s"""
        found = False
        for i, viewer in enumerate(six.itervalues(self.viewers)):
            viewer.show_intro(text)
            if not found and viewer.can_show_rst:
                if i:
                    self.set_viewer(viewer)
                found = True

    def close(self, *args, **kwargs):
        self.viewers['HTML help'].close(*args, **kwargs)
        return super(HelpExplorer, self).close(*args, **kwargs)
Example #6
0
class FormatoptionWidget(QWidget, DockMixin):
    """
    Widget to update the formatoptions of the current project

    This widget, mainly made out of a combobox for the formatoption group,
    a combobox for the formatoption, and a text editor, is designed
    for updating the selected formatoptions for the current subproject.

    The widget is connected to the :attr:`psyplot.project.Project.oncpchange`
    signal and refills the comboboxes if the current subproject changes.

    The text editor either accepts python code that will be executed by the
    given `console`, or yaml code.
    """

    no_fmtos_update = _temp_bool_prop(
        'no_fmtos_update', """update the fmto combo box or not""")

    #: The combobox for the formatoption groups
    group_combo = None

    #: The combobox for the formatoptions
    fmt_combo = None

    #: The help_explorer to display the documentation of the formatoptions
    help_explorer = None

    #: The formatoption specific widget that is loaded from the formatoption
    fmt_widget = None

    #: A line edit for updating the formatoptions
    line_edit = None

    #: A multiline text editor for updating the formatoptions
    text_edit = None

    #: A button to switch between :attr:`line_edit` and :attr:`text_edit`
    multiline_button = None

    @property
    def shell(self):
        """The shell to execute the update of the formatoptions in the current
        project"""
        return self.console.kernel_manager.kernel.shell

    def __init__(self, *args, **kwargs):
        """
        Parameters
        ----------
        help_explorer: psyplot_gui.help_explorer.HelpExplorer
            The help explorer to show the documentation of one formatoption
        console: psyplot_gui.console.ConsoleWidget
            The console that can be used to update the current subproject via::

                psy.gcp().update(**kwargs)

            where ``**kwargs`` is defined through the selected formatoption
            in the :attr:`fmt_combo` combobox and the value in the
            :attr:`line_edit` editor
        ``*args, **kwargs``
            Any other keyword for the QWidget class
        """
        help_explorer = kwargs.pop('help_explorer', None)
        console = kwargs.pop('console', None)
        super(FormatoptionWidget, self).__init__(*args, **kwargs)
        self.help_explorer = help_explorer
        self.console = console
        self.error_msg = PyErrorMessage(self)

        # ---------------------------------------------------------------------
        # -------------------------- Child widgets ----------------------------
        # ---------------------------------------------------------------------
        self.group_combo = QComboBox(parent=self)
        self.fmt_combo = QComboBox(parent=self)
        self.line_edit = QLineEdit(parent=self)
        self.text_edit = QTextEdit(parent=self)
        self.run_button = QToolButton(parent=self)

        # completer for the fmto widget
        self.fmt_combo.setEditable(True)
        self.fmt_combo.setInsertPolicy(QComboBox.NoInsert)
        self.fmto_completer = completer = QCompleter(
            ['time', 'lat', 'lon', 'lev'])
        completer.setCompletionMode(
            QCompleter.PopupCompletion)
        completer.activated[str].connect(self.set_fmto)
        if with_qt5:
            completer.setFilterMode(Qt.MatchContains)
        completer.setModel(QStandardItemModel())
        self.fmt_combo.setCompleter(completer)

        self.dim_widget = DimensionsWidget(parent=self)
        self.dim_widget.setVisible(False)

        self.multiline_button = QPushButton('Multiline', parent=self)
        self.multiline_button.setCheckable(True)

        self.yaml_cb = QCheckBox('Yaml syntax')
        self.yaml_cb.setChecked(True)

        self.keys_button = QPushButton('Keys', parent=self)
        self.summaries_button = QPushButton('Summaries', parent=self)
        self.docs_button = QPushButton('Docs', parent=self)

        self.grouped_cb = QCheckBox('grouped', parent=self)
        self.all_groups_cb = QCheckBox('all groups', parent=self)
        self.include_links_cb = QCheckBox('include links', parent=self)

        self.text_edit.setVisible(False)

        # ---------------------------------------------------------------------
        # -------------------------- Descriptions -----------------------------
        # ---------------------------------------------------------------------

        self.group_combo.setToolTip('Select the formatoption group')
        self.fmt_combo.setToolTip('Select the formatoption to update')
        self.line_edit.setToolTip(
            'Insert the value which what you want to update the selected '
            'formatoption and hit right button. The code is executed in the '
            'main console.')
        self.yaml_cb.setToolTip(
            "Use the yaml syntax for the values inserted in the above cell. "
            "Otherwise the content there is evaluated as a python expression "
            "in the terminal")
        self.text_edit.setToolTip(self.line_edit.toolTip())
        self.run_button.setIcon(QIcon(get_icon('run_arrow.png')))
        self.run_button.setToolTip('Update the selected formatoption')
        self.multiline_button.setToolTip(
            'Allow linebreaks in the text editor line above.')
        self.keys_button.setToolTip(
            'Show the formatoption keys in this group (or in all '
            'groups) in the help explorer')
        self.summaries_button.setToolTip(
            'Show the formatoption summaries in this group (or in all '
            'groups) in the help explorer')
        self.docs_button.setToolTip(
            'Show the formatoption documentations in this group (or in all '
            'groups) in the help explorer')
        self.grouped_cb.setToolTip(
            'Group the formatoptions before displaying them in the help '
            'explorer')
        self.all_groups_cb.setToolTip('Use all groups when displaying the '
                                      'keys, docs or summaries')
        self.include_links_cb.setToolTip(
            'Include links to remote documentations when showing the '
            'keys, docs and summaries in the help explorer (requires '
            'intersphinx)')

        # ---------------------------------------------------------------------
        # -------------------------- Connections ------------------------------
        # ---------------------------------------------------------------------
        self.group_combo.currentIndexChanged[int].connect(self.fill_fmt_combo)
        self.fmt_combo.currentIndexChanged[int].connect(self.show_fmt_info)
        self.fmt_combo.currentIndexChanged[int].connect(self.load_fmt_widget)
        self.fmt_combo.currentIndexChanged[int].connect(
            self.set_current_fmt_value)
        self.run_button.clicked.connect(self.run_code)
        self.line_edit.returnPressed.connect(self.run_button.click)
        self.multiline_button.clicked.connect(self.toggle_line_edit)
        self.keys_button.clicked.connect(
            partial(self.show_all_fmt_info, 'keys'))
        self.summaries_button.clicked.connect(
            partial(self.show_all_fmt_info, 'summaries'))
        self.docs_button.clicked.connect(
            partial(self.show_all_fmt_info, 'docs'))

        # ---------------------------------------------------------------------
        # ------------------------------ Layouts ------------------------------
        # ---------------------------------------------------------------------
        self.combos = QHBoxLayout()
        self.combos.addWidget(self.group_combo)
        self.combos.addWidget(self.fmt_combo)

        self.execs = QHBoxLayout()
        self.execs.addWidget(self.line_edit)
        self.execs.addWidget(self.text_edit)
        self.execs.addWidget(self.run_button)

        self.info_box = QHBoxLayout()
        self.info_box.addWidget(self.multiline_button)
        self.info_box.addWidget(self.yaml_cb)
        self.info_box.addStretch(0)
        for w in [self.keys_button, self.summaries_button, self.docs_button,
                  self.all_groups_cb, self.grouped_cb, self.include_links_cb]:
            self.info_box.addWidget(w)

        self.vbox = QVBoxLayout()
        self.vbox.addLayout(self.combos)
        self.vbox.addWidget(self.dim_widget)
        self.vbox.addLayout(self.execs)
        self.vbox.addLayout(self.info_box)

        self.vbox.setSpacing(0)

        self.setLayout(self.vbox)

        # fill with content
        self.fill_combos_from_project(psy.gcp())
        psy.Project.oncpchange.connect(self.fill_combos_from_project)
        rcParams.connect('fmt.sort_by_key', self.refill_from_rc)

    def refill_from_rc(self, sort_by_key):
        from psyplot.project import gcp
        self.fill_combos_from_project(gcp())

    def fill_combos_from_project(self, project):
        """Fill :attr:`group_combo` and :attr:`fmt_combo` from a project

        Parameters
        ----------
        project: psyplot.project.Project
            The project to use"""
        if rcParams['fmt.sort_by_key']:
            def sorter(fmto):
                return fmto.key
        else:
            sorter = self.get_name

        current_text = self.group_combo.currentText()
        with self.no_fmtos_update:
            self.group_combo.clear()
            if project is None or project.is_main or not len(project):
                self.fmt_combo.clear()
                self.groups = []
                self.fmtos = []
                self.line_edit.setEnabled(False)
                return
            self.line_edit.setEnabled(True)
            # get dimensions
            it_vars = chain.from_iterable(
                arr.psy.iter_base_variables for arr in project.arrays)
            dims = next(it_vars).dims
            sdims = set(dims)
            for var in it_vars:
                sdims.intersection_update(var.dims)
            coords = [d for d in dims if d in sdims]
            coords_name = [COORDSGROUP] if coords else []
            coords_verbose = ['Dimensions'] if coords else []
            coords = [coords] if coords else []

            if len(project.plotters):
                # get formatoptions and group them alphabetically
                grouped_fmts = defaultdict(list)
                for fmto in project._fmtos:
                    grouped_fmts[fmto.group].append(fmto)
                for val in six.itervalues(grouped_fmts):
                    val.sort(key=sorter)
                grouped_fmts = OrderedDict(
                    sorted(six.iteritems(grouped_fmts),
                           key=lambda t: psyp.groups.get(t[0], t[0])))
                fmt_groups = list(grouped_fmts.keys())
                # save original names
                self.groups = coords_name + [ALLGROUP] + fmt_groups
                # save verbose group names (which are used in the combo box)
                self.groupnames = (
                    coords_verbose + ['All formatoptions'] + list(
                        map(lambda s: psyp.groups.get(s, s), fmt_groups)))
                # save formatoptions
                fmtos = list(grouped_fmts.values())
                self.fmtos = coords + [sorted(
                    chain(*fmtos), key=sorter)] + fmtos
            else:
                self.groups = coords_name
                self.groupnames = coords_verbose
                self.fmtos = coords
            self.group_combo.addItems(self.groupnames)
            ind = self.group_combo.findText(current_text)
            self.group_combo.setCurrentIndex(ind if ind >= 0 else 0)
        self.fill_fmt_combo(self.group_combo.currentIndex())

    def get_name(self, fmto):
        """Get the name of a :class:`psyplot.plotter.Formatoption` instance"""
        if isinstance(fmto, six.string_types):
            return fmto
        return '%s (%s)' % (fmto.name, fmto.key) if fmto.name else fmto.key

    @property
    def fmto(self):
        return self.fmtos[self.group_combo.currentIndex()][
            self.fmt_combo.currentIndex()]

    @fmto.setter
    def fmto(self, value):
        name = self.get_name(value)
        for i, fmtos in enumerate(self.fmtos):
            if i == 1:  # all formatoptions
                continue
            if name in map(self.get_name, fmtos):
                with self.no_fmtos_update:
                    self.group_combo.setCurrentIndex(i)
                self.fill_fmt_combo(i, name)
                return

    def toggle_line_edit(self):
        """Switch between the :attr:`line_edit` and :attr:`text_edit`

        This method is called when the :attr:`multiline_button` is clicked
        and switches between the single line :attr:``line_edit` and the
        multiline :attr:`text_edit`
        """
        # switch to multiline text edit
        if (self.multiline_button.isChecked() and
                not self.text_edit.isVisible()):
            self.line_edit.setVisible(False)
            self.text_edit.setVisible(True)
            self.text_edit.setPlainText(self.line_edit.text())
        elif (not self.multiline_button.isChecked() and
              not self.line_edit.isVisible()):
            self.line_edit.setVisible(True)
            self.text_edit.setVisible(False)
            self.line_edit.setText(self.text_edit.toPlainText())

    def fill_fmt_combo(self, i, current_text=None):
        """Fill the :attr:`fmt_combo` combobox based on the current group name
        """
        if not self.no_fmtos_update:
            with self.no_fmtos_update:
                if current_text is None:
                    current_text = self.fmt_combo.currentText()
                self.fmt_combo.clear()
                self.fmt_combo.addItems(
                    list(map(self.get_name, self.fmtos[i])))
                ind = self.fmt_combo.findText(current_text)
                self.fmt_combo.setCurrentIndex(ind if ind >= 0 else 0)
                # update completer model
                self.setup_fmt_completion_model()
            idx = self.fmt_combo.currentIndex()
            self.show_fmt_info(idx)
            self.load_fmt_widget(idx)
            self.set_current_fmt_value(idx)

    def set_fmto(self, name):
        self.fmto = name

    def setup_fmt_completion_model(self):
        fmtos = list(unique_everseen(map(
            self.get_name, chain.from_iterable(self.fmtos))))
        model = self.fmto_completer.model()
        model.setRowCount(len(fmtos))
        for i, name in enumerate(fmtos):
            model.setItem(i, QStandardItem(name))

    def load_fmt_widget(self, i):
        """Load the formatoption specific widget

        This method loads the formatoption specific widget from the
        :meth:`psyplot.plotter.Formatoption.get_fmt_widget` method and
        displays it above the :attr:`line_edit`

        Parameters
        ----------
        i: int
            The index of the current formatoption"""
        self.remove_fmt_widget()
        group_ind = self.group_combo.currentIndex()
        if not self.no_fmtos_update:
            from psyplot.project import gcp
            if self.groups[group_ind] == COORDSGROUP:
                dim = self.fmtos[group_ind][i]
                self.fmt_widget = self.dim_widget
                self.dim_widget.set_dim(dim)
                self.dim_widget.set_single_selection(
                    dim not in gcp()[0].dims)
                self.dim_widget.setVisible(True)
            else:
                fmto = self.fmtos[group_ind][i]
                self.fmt_widget = fmto.get_fmt_widget(self, gcp())
                if self.fmt_widget is not None:
                    self.vbox.insertWidget(2, self.fmt_widget)

    def reset_fmt_widget(self):
        idx = self.fmt_combo.currentIndex()
        self.load_fmt_widget(idx)
        self.set_current_fmt_value(idx)

    def remove_fmt_widget(self):
        if self.fmt_widget is not None:
            self.fmt_widget.hide()
            if self.fmt_widget is self.dim_widget:
                self.fmt_widget.reset_combobox()
            else:
                self.vbox.removeWidget(self.fmt_widget)
                self.fmt_widget.close()
            del self.fmt_widget

    def set_current_fmt_value(self, i):
        """Add the value of the current formatoption to the line text"""
        group_ind = self.group_combo.currentIndex()
        if not self.no_fmtos_update:
            if self.groups[group_ind] == COORDSGROUP:
                from psyplot.project import gcp
                dim = self.fmtos[group_ind][i]
                self.set_obj(gcp().arrays[0].psy.idims[dim])
            else:
                fmto = self.fmtos[group_ind][i]
                self.set_obj(fmto.value)

    def show_fmt_info(self, i):
        """Show the documentation of the formatoption in the help explorer
        """
        group_ind = self.group_combo.currentIndex()
        if (not self.no_fmtos_update and
                self.groups[group_ind] != COORDSGROUP):
            fmto = self.fmtos[self.group_combo.currentIndex()][i]
            fmto.plotter.show_docs(
                fmto.key, include_links=self.include_links_cb.isChecked())

    def run_code(self):
        """Run the update of the project inside the :attr:`shell`"""
        if self.line_edit.isVisible():
            text = str(self.line_edit.text())
        else:
            text = str(self.text_edit.toPlainText())
        if not text or not self.fmtos:
            return
        group_ind = self.group_combo.currentIndex()
        if self.groups[group_ind] == COORDSGROUP:
            key = self.fmtos[group_ind][self.fmt_combo.currentIndex()]
            param = 'dims'
        else:
            key = self.fmtos[group_ind][self.fmt_combo.currentIndex()].key
            param = 'fmt'
        if self.yaml_cb.isChecked():
            import psyplot.project as psy
            psy.gcp().update(**{key: yaml.load(text)})
        else:
            code = "psy.gcp().update(%s={'%s': %s})" % (param, key, text)
            if ExecutionInfo is not None:
                info = ExecutionInfo(raw_cell=code, store_history=False,
                                     silent=True, shell_futures=False)
                e = ExecutionResult(info)
            else:
                e = ExecutionResult()
            self.console.run_command_in_shell(code, e)
            try:
                e.raise_error()
            except Exception:  # reset the console and clear the error message
                raise
            finally:
                self.console.reset()

    def get_text(self):
        """Get the current update text"""
        if self.line_edit.isVisible():
            return self.line_edit.text()
        else:
            return self.text_edit.toPlainText()

    def get_obj(self):
        """Get the current update text"""
        if self.line_edit.isVisible():
            txt = self.line_edit.text()
        else:
            txt = self.text_edit.toPlainText()
        try:
            obj = yaml.load(txt)
        except Exception:
            self.error_msg.showTraceback("Could not load %s" % txt)
        else:
            return obj

    def insert_obj(self, obj):
        """Add a string to the formatoption widget"""
        current = self.get_text()
        use_yaml = self.yaml_cb.isChecked()
        use_line_edit = self.line_edit.isVisible()
        # strings are treated separately such that we consider quotation marks
        # at the borders
        if isstring(obj) and current:
            if use_line_edit:
                pos = self.line_edit.cursorPosition()
            else:
                pos = self.text_edit.textCursor().position()
            if pos not in [0, len(current)]:
                s = obj
            else:
                if current[0] in ['"', "'"]:
                    current = current[1:-1]
                self.clear_text()
                if pos == 0:
                    s = '"' + obj + current + '"'
                else:
                    s = '"' + current + obj + '"'
                current = ''
        elif isstring(obj):  # add quotation marks
            s = '"' + obj + '"'
        elif not use_yaml:
            s = repr(obj)
        else:
            s = yaml.dump(obj).strip()
            if s.endswith('\n...'):
                s = s[:-4]
        if use_line_edit:
            self.line_edit.insert(s)
        else:
            self.text_edit.insertPlainText(s)

    def clear_text(self):
        if self.line_edit.isVisible():
            self.line_edit.clear()
        else:
            self.text_edit.clear()

    def set_obj(self, obj):
        self.clear_text()
        self.insert_obj(obj)

    def show_all_fmt_info(self, what):
        """Show the keys, summaries or docs of the formatoptions

        Calling this function let's the help browser show the documentation
        etc. of all docs or only the selected group determined by the state of
        the :attr:`grouped_cb` and :attr:`all_groups_cb` checkboxes

        Parameters
        ----------
        what: {'keys', 'summaries', 'docs'}
            Determines what to show"""
        if not self.fmtos:
            return
        if (self.all_groups_cb.isChecked() or
                self.group_combo.currentIndex() < 2):
            fmtos = list(chain.from_iterable(
                fmto_group for i, fmto_group in enumerate(self.fmtos)
                if self.groups[i] not in [ALLGROUP, COORDSGROUP]))
        else:
            fmtos = self.fmtos[self.group_combo.currentIndex()]
        plotter = fmtos[0].plotter
        getattr(plotter, 'show_' + what)(
            [fmto.key for fmto in fmtos], grouped=self.grouped_cb.isChecked(),
            include_links=self.include_links_cb.isChecked())
Example #7
0
class FormatoptionWidget(QWidget, DockMixin):
    """
    Widget to update the formatoptions of the current project

    This widget, mainly made out of a combobox for the formatoption group,
    a combobox for the formatoption, and a text editor, is designed
    for updating the selected formatoptions for the current subproject.

    The widget is connected to the :attr:`psyplot.project.Project.oncpchange`
    signal and refills the comboboxes if the current subproject changes.

    The text editor either accepts python code that will be executed by the
    given `console`, or yaml code.
    """

    no_fmtos_update = _temp_bool_prop('no_fmtos_update',
                                      """update the fmto combo box or not""")

    #: The combobox for the formatoption groups
    group_combo = None

    #: The combobox for the formatoptions
    fmt_combo = None

    #: The help_explorer to display the documentation of the formatoptions
    help_explorer = None

    #: The formatoption specific widget that is loaded from the formatoption
    fmt_widget = None

    #: A line edit for updating the formatoptions
    line_edit = None

    #: A multiline text editor for updating the formatoptions
    text_edit = None

    #: A button to switch between :attr:`line_edit` and :attr:`text_edit`
    multiline_button = None

    @property
    def shell(self):
        """The shell to execute the update of the formatoptions in the current
        project"""
        return self.console.kernel_manager.kernel.shell

    def __init__(self, *args, **kwargs):
        """
        Parameters
        ----------
        help_explorer: psyplot_gui.help_explorer.HelpExplorer
            The help explorer to show the documentation of one formatoption
        console: psyplot_gui.console.ConsoleWidget
            The console that can be used to update the current subproject via::

                psy.gcp().update(**kwargs)

            where ``**kwargs`` is defined through the selected formatoption
            in the :attr:`fmt_combo` combobox and the value in the
            :attr:`line_edit` editor
        ``*args, **kwargs``
            Any other keyword for the QWidget class
        """
        help_explorer = kwargs.pop('help_explorer', None)
        console = kwargs.pop('console', None)
        super(FormatoptionWidget, self).__init__(*args, **kwargs)
        self.help_explorer = help_explorer
        self.console = console
        self.error_msg = PyErrorMessage(self)

        # ---------------------------------------------------------------------
        # -------------------------- Child widgets ----------------------------
        # ---------------------------------------------------------------------
        self.group_combo = QComboBox(parent=self)
        self.fmt_combo = QComboBox(parent=self)
        self.line_edit = QLineEdit(parent=self)
        self.text_edit = QTextEdit(parent=self)
        self.run_button = QToolButton(parent=self)

        # completer for the fmto widget
        self.fmt_combo.setEditable(True)
        self.fmt_combo.setInsertPolicy(QComboBox.NoInsert)
        self.fmto_completer = completer = QCompleter(
            ['time', 'lat', 'lon', 'lev'])
        completer.setCompletionMode(QCompleter.PopupCompletion)
        completer.activated[str].connect(self.set_fmto)
        if with_qt5:
            completer.setFilterMode(Qt.MatchContains)
        completer.setModel(QStandardItemModel())
        self.fmt_combo.setCompleter(completer)

        self.dim_widget = DimensionsWidget(parent=self)
        self.dim_widget.setVisible(False)

        self.multiline_button = QPushButton('Multiline', parent=self)
        self.multiline_button.setCheckable(True)

        self.yaml_cb = QCheckBox('Yaml syntax')
        self.yaml_cb.setChecked(True)

        self.keys_button = QPushButton('Keys', parent=self)
        self.summaries_button = QPushButton('Summaries', parent=self)
        self.docs_button = QPushButton('Docs', parent=self)

        self.grouped_cb = QCheckBox('grouped', parent=self)
        self.all_groups_cb = QCheckBox('all groups', parent=self)
        self.include_links_cb = QCheckBox('include links', parent=self)

        self.text_edit.setVisible(False)

        # ---------------------------------------------------------------------
        # -------------------------- Descriptions -----------------------------
        # ---------------------------------------------------------------------

        self.group_combo.setToolTip('Select the formatoption group')
        self.fmt_combo.setToolTip('Select the formatoption to update')
        self.line_edit.setToolTip(
            'Insert the value which what you want to update the selected '
            'formatoption and hit right button. The code is executed in the '
            'main console.')
        self.yaml_cb.setToolTip(
            "Use the yaml syntax for the values inserted in the above cell. "
            "Otherwise the content there is evaluated as a python expression "
            "in the terminal")
        self.text_edit.setToolTip(self.line_edit.toolTip())
        self.run_button.setIcon(QIcon(get_icon('run_arrow.png')))
        self.run_button.setToolTip('Update the selected formatoption')
        self.multiline_button.setToolTip(
            'Allow linebreaks in the text editor line above.')
        self.keys_button.setToolTip(
            'Show the formatoption keys in this group (or in all '
            'groups) in the help explorer')
        self.summaries_button.setToolTip(
            'Show the formatoption summaries in this group (or in all '
            'groups) in the help explorer')
        self.docs_button.setToolTip(
            'Show the formatoption documentations in this group (or in all '
            'groups) in the help explorer')
        self.grouped_cb.setToolTip(
            'Group the formatoptions before displaying them in the help '
            'explorer')
        self.all_groups_cb.setToolTip('Use all groups when displaying the '
                                      'keys, docs or summaries')
        self.include_links_cb.setToolTip(
            'Include links to remote documentations when showing the '
            'keys, docs and summaries in the help explorer (requires '
            'intersphinx)')

        # ---------------------------------------------------------------------
        # -------------------------- Connections ------------------------------
        # ---------------------------------------------------------------------
        self.group_combo.currentIndexChanged[int].connect(self.fill_fmt_combo)
        self.fmt_combo.currentIndexChanged[int].connect(self.show_fmt_info)
        self.fmt_combo.currentIndexChanged[int].connect(self.load_fmt_widget)
        self.fmt_combo.currentIndexChanged[int].connect(
            self.set_current_fmt_value)
        self.run_button.clicked.connect(self.run_code)
        self.line_edit.returnPressed.connect(self.run_button.click)
        self.multiline_button.clicked.connect(self.toggle_line_edit)
        self.keys_button.clicked.connect(
            partial(self.show_all_fmt_info, 'keys'))
        self.summaries_button.clicked.connect(
            partial(self.show_all_fmt_info, 'summaries'))
        self.docs_button.clicked.connect(
            partial(self.show_all_fmt_info, 'docs'))

        # ---------------------------------------------------------------------
        # ------------------------------ Layouts ------------------------------
        # ---------------------------------------------------------------------
        self.combos = QHBoxLayout()
        self.combos.addWidget(self.group_combo)
        self.combos.addWidget(self.fmt_combo)

        self.execs = QHBoxLayout()
        self.execs.addWidget(self.line_edit)
        self.execs.addWidget(self.text_edit)
        self.execs.addWidget(self.run_button)

        self.info_box = QHBoxLayout()
        self.info_box.addWidget(self.multiline_button)
        self.info_box.addWidget(self.yaml_cb)
        self.info_box.addStretch(0)
        for w in [
                self.keys_button, self.summaries_button, self.docs_button,
                self.all_groups_cb, self.grouped_cb, self.include_links_cb
        ]:
            self.info_box.addWidget(w)

        self.vbox = QVBoxLayout()
        self.vbox.addLayout(self.combos)
        self.vbox.addWidget(self.dim_widget)
        self.vbox.addLayout(self.execs)
        self.vbox.addLayout(self.info_box)

        self.vbox.setSpacing(0)

        self.setLayout(self.vbox)

        # fill with content
        self.fill_combos_from_project(psy.gcp())
        psy.Project.oncpchange.connect(self.fill_combos_from_project)
        rcParams.connect('fmt.sort_by_key', self.refill_from_rc)

    def refill_from_rc(self, sort_by_key):
        from psyplot.project import gcp
        self.fill_combos_from_project(gcp())

    def fill_combos_from_project(self, project):
        """Fill :attr:`group_combo` and :attr:`fmt_combo` from a project

        Parameters
        ----------
        project: psyplot.project.Project
            The project to use"""
        if rcParams['fmt.sort_by_key']:

            def sorter(fmto):
                return fmto.key
        else:
            sorter = self.get_name

        current_text = self.group_combo.currentText()
        with self.no_fmtos_update:
            self.group_combo.clear()
            if project is None or project.is_main or not len(project):
                self.fmt_combo.clear()
                self.groups = []
                self.fmtos = []
                self.line_edit.setEnabled(False)
                return
            self.line_edit.setEnabled(True)
            # get dimensions
            it_vars = chain.from_iterable(arr.psy.iter_base_variables
                                          for arr in project.arrays)
            dims = next(it_vars).dims
            sdims = set(dims)
            for var in it_vars:
                sdims.intersection_update(var.dims)
            coords = [d for d in dims if d in sdims]
            coords_name = [COORDSGROUP] if coords else []
            coords_verbose = ['Dimensions'] if coords else []
            coords = [coords] if coords else []

            if len(project.plotters):
                # get formatoptions and group them alphabetically
                grouped_fmts = defaultdict(list)
                for fmto in project._fmtos:
                    grouped_fmts[fmto.group].append(fmto)
                for val in six.itervalues(grouped_fmts):
                    val.sort(key=sorter)
                grouped_fmts = OrderedDict(
                    sorted(six.iteritems(grouped_fmts),
                           key=lambda t: psyp.groups.get(t[0], t[0])))
                fmt_groups = list(grouped_fmts.keys())
                # save original names
                self.groups = coords_name + [ALLGROUP] + fmt_groups
                # save verbose group names (which are used in the combo box)
                self.groupnames = (
                    coords_verbose + ['All formatoptions'] +
                    list(map(lambda s: psyp.groups.get(s, s), fmt_groups)))
                # save formatoptions
                fmtos = list(grouped_fmts.values())
                self.fmtos = coords + [sorted(chain(*fmtos), key=sorter)
                                       ] + fmtos
            else:
                self.groups = coords_name
                self.groupnames = coords_verbose
                self.fmtos = coords
            self.group_combo.addItems(self.groupnames)
            ind = self.group_combo.findText(current_text)
            self.group_combo.setCurrentIndex(ind if ind >= 0 else 0)
        self.fill_fmt_combo(self.group_combo.currentIndex())

    def get_name(self, fmto):
        """Get the name of a :class:`psyplot.plotter.Formatoption` instance"""
        if isinstance(fmto, six.string_types):
            return fmto
        return '%s (%s)' % (fmto.name, fmto.key) if fmto.name else fmto.key

    @property
    def fmto(self):
        return self.fmtos[self.group_combo.currentIndex()][
            self.fmt_combo.currentIndex()]

    @fmto.setter
    def fmto(self, value):
        name = self.get_name(value)
        for i, fmtos in enumerate(self.fmtos):
            if i == 1:  # all formatoptions
                continue
            if name in map(self.get_name, fmtos):
                with self.no_fmtos_update:
                    self.group_combo.setCurrentIndex(i)
                self.fill_fmt_combo(i, name)
                return

    def toggle_line_edit(self):
        """Switch between the :attr:`line_edit` and :attr:`text_edit`

        This method is called when the :attr:`multiline_button` is clicked
        and switches between the single line :attr:``line_edit` and the
        multiline :attr:`text_edit`
        """
        # switch to multiline text edit
        if (self.multiline_button.isChecked()
                and not self.text_edit.isVisible()):
            self.line_edit.setVisible(False)
            self.text_edit.setVisible(True)
            self.text_edit.setPlainText(self.line_edit.text())
        elif (not self.multiline_button.isChecked()
              and not self.line_edit.isVisible()):
            self.line_edit.setVisible(True)
            self.text_edit.setVisible(False)
            self.line_edit.setText(self.text_edit.toPlainText())

    def fill_fmt_combo(self, i, current_text=None):
        """Fill the :attr:`fmt_combo` combobox based on the current group name
        """
        if not self.no_fmtos_update:
            with self.no_fmtos_update:
                if current_text is None:
                    current_text = self.fmt_combo.currentText()
                self.fmt_combo.clear()
                self.fmt_combo.addItems(list(map(self.get_name,
                                                 self.fmtos[i])))
                ind = self.fmt_combo.findText(current_text)
                self.fmt_combo.setCurrentIndex(ind if ind >= 0 else 0)
                # update completer model
                self.setup_fmt_completion_model()
            idx = self.fmt_combo.currentIndex()
            self.show_fmt_info(idx)
            self.load_fmt_widget(idx)
            self.set_current_fmt_value(idx)

    def set_fmto(self, name):
        self.fmto = name

    def setup_fmt_completion_model(self):
        fmtos = list(
            unique_everseen(map(self.get_name,
                                chain.from_iterable(self.fmtos))))
        model = self.fmto_completer.model()
        model.setRowCount(len(fmtos))
        for i, name in enumerate(fmtos):
            model.setItem(i, QStandardItem(name))

    def load_fmt_widget(self, i):
        """Load the formatoption specific widget

        This method loads the formatoption specific widget from the
        :meth:`psyplot.plotter.Formatoption.get_fmt_widget` method and
        displays it above the :attr:`line_edit`

        Parameters
        ----------
        i: int
            The index of the current formatoption"""
        self.remove_fmt_widget()
        group_ind = self.group_combo.currentIndex()
        if not self.no_fmtos_update:
            from psyplot.project import gcp
            if self.groups[group_ind] == COORDSGROUP:
                dim = self.fmtos[group_ind][i]
                self.fmt_widget = self.dim_widget
                self.dim_widget.set_dim(dim)
                self.dim_widget.set_single_selection(dim not in gcp()[0].dims)
                self.dim_widget.setVisible(True)
            else:
                fmto = self.fmtos[group_ind][i]
                self.fmt_widget = fmto.get_fmt_widget(self, gcp())
                if self.fmt_widget is not None:
                    self.vbox.insertWidget(2, self.fmt_widget)

    def reset_fmt_widget(self):
        idx = self.fmt_combo.currentIndex()
        self.load_fmt_widget(idx)
        self.set_current_fmt_value(idx)

    def remove_fmt_widget(self):
        if self.fmt_widget is not None:
            self.fmt_widget.hide()
            if self.fmt_widget is self.dim_widget:
                self.fmt_widget.reset_combobox()
            else:
                self.vbox.removeWidget(self.fmt_widget)
                self.fmt_widget.close()
            del self.fmt_widget

    def set_current_fmt_value(self, i):
        """Add the value of the current formatoption to the line text"""
        group_ind = self.group_combo.currentIndex()
        if not self.no_fmtos_update:
            if self.groups[group_ind] == COORDSGROUP:
                from psyplot.project import gcp
                dim = self.fmtos[group_ind][i]
                self.set_obj(gcp().arrays[0].psy.idims[dim])
            else:
                fmto = self.fmtos[group_ind][i]
                self.set_obj(fmto.value)

    def show_fmt_info(self, i):
        """Show the documentation of the formatoption in the help explorer
        """
        group_ind = self.group_combo.currentIndex()
        if (not self.no_fmtos_update
                and self.groups[group_ind] != COORDSGROUP):
            fmto = self.fmtos[self.group_combo.currentIndex()][i]
            fmto.plotter.show_docs(
                fmto.key, include_links=self.include_links_cb.isChecked())

    def run_code(self):
        """Run the update of the project inside the :attr:`shell`"""
        if self.line_edit.isVisible():
            text = str(self.line_edit.text())
        else:
            text = str(self.text_edit.toPlainText())
        if not text or not self.fmtos:
            return
        group_ind = self.group_combo.currentIndex()
        if self.groups[group_ind] == COORDSGROUP:
            key = self.fmtos[group_ind][self.fmt_combo.currentIndex()]
            param = 'dims'
        else:
            key = self.fmtos[group_ind][self.fmt_combo.currentIndex()].key
            param = 'fmt'
        if self.yaml_cb.isChecked():
            import psyplot.project as psy
            psy.gcp().update(**{key: yaml.load(text, Loader=yaml.Loader)})
        else:
            code = "psy.gcp().update(%s={'%s': %s})" % (param, key, text)
            if ExecutionInfo is not None:
                info = ExecutionInfo(raw_cell=code,
                                     store_history=False,
                                     silent=True,
                                     shell_futures=False)
                e = ExecutionResult(info)
            else:
                e = ExecutionResult()
            self.console.run_command_in_shell(code, e)
            try:
                e.raise_error()
            except Exception:  # reset the console and clear the error message
                raise
            finally:
                self.console.reset()

    def get_text(self):
        """Get the current update text"""
        if self.line_edit.isVisible():
            return self.line_edit.text()
        else:
            return self.text_edit.toPlainText()

    def get_obj(self):
        """Get the current update text"""
        if self.line_edit.isVisible():
            txt = self.line_edit.text()
        else:
            txt = self.text_edit.toPlainText()
        try:
            obj = yaml.load(txt, Loader=yaml.Loader)
        except Exception:
            self.error_msg.showTraceback("Could not load %s" % txt)
        else:
            return obj

    def insert_obj(self, obj):
        """Add a string to the formatoption widget"""
        current = self.get_text()
        use_yaml = self.yaml_cb.isChecked()
        use_line_edit = self.line_edit.isVisible()
        # strings are treated separately such that we consider quotation marks
        # at the borders
        if isstring(obj) and current:
            if use_line_edit:
                pos = self.line_edit.cursorPosition()
            else:
                pos = self.text_edit.textCursor().position()
            if pos not in [0, len(current)]:
                s = obj
            else:
                if current[0] in ['"', "'"]:
                    current = current[1:-1]
                self.clear_text()
                if pos == 0:
                    s = '"' + obj + current + '"'
                else:
                    s = '"' + current + obj + '"'
                current = ''
        elif isstring(obj):  # add quotation marks
            s = '"' + obj + '"'
        elif not use_yaml:
            s = repr(obj)
        else:
            s = yaml.dump(obj, default_flow_style=True).strip()
            if s.endswith('\n...'):
                s = s[:-4]
        if use_line_edit:
            self.line_edit.insert(s)
        else:
            self.text_edit.insertPlainText(s)

    def clear_text(self):
        if self.line_edit.isVisible():
            self.line_edit.clear()
        else:
            self.text_edit.clear()

    def set_obj(self, obj):
        self.clear_text()
        self.insert_obj(obj)

    def show_all_fmt_info(self, what):
        """Show the keys, summaries or docs of the formatoptions

        Calling this function let's the help browser show the documentation
        etc. of all docs or only the selected group determined by the state of
        the :attr:`grouped_cb` and :attr:`all_groups_cb` checkboxes

        Parameters
        ----------
        what: {'keys', 'summaries', 'docs'}
            Determines what to show"""
        if not self.fmtos:
            return
        if (self.all_groups_cb.isChecked()
                or self.group_combo.currentIndex() < 2):
            fmtos = list(
                chain.from_iterable(
                    fmto_group for i, fmto_group in enumerate(self.fmtos)
                    if self.groups[i] not in [ALLGROUP, COORDSGROUP]))
        else:
            fmtos = self.fmtos[self.group_combo.currentIndex()]
        plotter = fmtos[0].plotter
        getattr(plotter, 'show_' +
                what)([fmto.key for fmto in fmtos],
                      grouped=self.grouped_cb.isChecked(),
                      include_links=self.include_links_cb.isChecked())