Exemplo n.º 1
0
class LigandSterimol(ToolInstance):

    help = "https://github.com/QChASM/SEQCROW/wiki/Ligand-Sterimol-Tool"
    SESSION_ENDURING = False
    SESSION_SAVE = False

    def __init__(self, session, name):
        super().__init__(session, name)

        from chimerax.ui import MainToolWindow
        self.tool_window = MainToolWindow(self)

        self.settings = _SterimolSettings(self.session, name)

        self._build_ui()

    def _build_ui(self):
        layout = QFormLayout()

        self.radii_option = QComboBox()
        self.radii_option.addItems(["Bondi", "UMN"])
        ndx = self.radii_option.findText(self.settings.radii, Qt.MatchExactly)
        self.radii_option.setCurrentIndex(ndx)
        layout.addRow("radii:", self.radii_option)

        self.L_option = QComboBox()
        self.L_option.addItems([
            "to centroid of coordinating atoms",
            "bisect angle between coordinating atoms"
        ])
        ndx = self.L_option.findText(self.settings.L_option, Qt.MatchExactly)
        self.L_option.setCurrentIndex(ndx)
        layout.addRow("L axis:", self.L_option)

        self.sterimol2vec = QGroupBox("Sterimol2Vec")
        sterimol2vec_layout = QFormLayout(self.sterimol2vec)

        self.at_L = QDoubleSpinBox()
        self.at_L.setRange(-10, 30)
        self.at_L.setDecimals(2)
        self.at_L.setSingleStep(0.25)
        self.at_L.setValue(self.settings.at_L)
        sterimol2vec_layout.addRow("L value:", self.at_L)

        layout.addRow(self.sterimol2vec)

        self.sterimol2vec.setCheckable(True)
        self.sterimol2vec.toggled.connect(lambda x: self.at_L.setEnabled(x))
        self.sterimol2vec.setChecked(self.settings.sterimol2vec)

        self.display_vectors = QCheckBox()
        self.display_vectors.setChecked(self.settings.display_vectors)
        layout.addRow("show vectors:", self.display_vectors)

        self.display_radii = QCheckBox()
        self.display_radii.setChecked(self.settings.display_radii)
        layout.addRow("show radii:", self.display_radii)

        calc_sterimol_button = QPushButton(
            "calculate parameters for selected ligands")
        calc_sterimol_button.clicked.connect(self.calc_sterimol)
        layout.addRow(calc_sterimol_button)
        self.calc_sterimol_button = calc_sterimol_button

        remove_sterimol_button = QPushButton("remove Sterimol visualizations")
        remove_sterimol_button.clicked.connect(self.del_sterimol)
        layout.addRow(remove_sterimol_button)
        self.remove_sterimol_button = remove_sterimol_button

        self.table = QTableWidget()
        self.table.setColumnCount(8)
        self.table.setHorizontalHeaderLabels([
            'model',
            'coord. atoms',
            'B\u2081',
            'B\u2082',
            'B\u2083',
            'B\u2084',
            'B\u2085',
            'L',
        ])
        self.table.setSelectionBehavior(QTableWidget.SelectRows)
        self.table.setEditTriggers(QTableWidget.NoEditTriggers)
        self.table.resizeColumnToContents(0)
        self.table.resizeColumnToContents(1)
        self.table.resizeColumnToContents(2)
        self.table.resizeColumnToContents(3)
        self.table.resizeColumnToContents(4)
        self.table.resizeColumnToContents(5)
        self.table.resizeColumnToContents(6)
        self.table.resizeColumnToContents(7)
        self.table.horizontalHeader().setSectionResizeMode(
            2, QHeaderView.Stretch)
        self.table.horizontalHeader().setSectionResizeMode(
            3, QHeaderView.Stretch)
        self.table.horizontalHeader().setSectionResizeMode(
            4, QHeaderView.Stretch)
        self.table.horizontalHeader().setSectionResizeMode(
            5, QHeaderView.Stretch)
        self.table.horizontalHeader().setSectionResizeMode(
            6, QHeaderView.Stretch)
        self.table.horizontalHeader().setSectionResizeMode(
            7, QHeaderView.Stretch)
        layout.addRow(self.table)

        menu = QMenuBar()

        export = menu.addMenu("&Export")

        clear = QAction("Clear data table", self.tool_window.ui_area)
        clear.triggered.connect(self.clear_table)
        export.addAction(clear)

        copy = QAction("&Copy CSV to clipboard", self.tool_window.ui_area)
        copy.triggered.connect(self.copy_csv)
        shortcut = QKeySequence(Qt.CTRL + Qt.Key_C)
        copy.setShortcut(shortcut)
        export.addAction(copy)

        save = QAction("&Save CSV...", self.tool_window.ui_area)
        save.triggered.connect(self.save_csv)
        #this shortcut interferes with main window's save shortcut
        #I've tried different shortcut contexts to no avail
        #thanks Qt...
        #shortcut = QKeySequence(Qt.CTRL + Qt.Key_S)
        #save.setShortcut(shortcut)
        #save.setShortcutContext(Qt.WidgetShortcut)
        export.addAction(save)

        delimiter = export.addMenu("Delimiter")

        comma = QAction("comma", self.tool_window.ui_area, checkable=True)
        comma.setChecked(self.settings.delimiter == "comma")
        comma.triggered.connect(lambda *args, delim="comma": self.settings.
                                __setattr__("delimiter", delim))
        delimiter.addAction(comma)

        tab = QAction("tab", self.tool_window.ui_area, checkable=True)
        tab.setChecked(self.settings.delimiter == "tab")
        tab.triggered.connect(lambda *args, delim="tab": self.settings.
                              __setattr__("delimiter", delim))
        delimiter.addAction(tab)

        space = QAction("space", self.tool_window.ui_area, checkable=True)
        space.setChecked(self.settings.delimiter == "space")
        space.triggered.connect(lambda *args, delim="space": self.settings.
                                __setattr__("delimiter", delim))
        delimiter.addAction(space)

        semicolon = QAction("semicolon",
                            self.tool_window.ui_area,
                            checkable=True)
        semicolon.setChecked(self.settings.delimiter == "semicolon")
        semicolon.triggered.connect(lambda *args, delim="semicolon": self.
                                    settings.__setattr__("delimiter", delim))
        delimiter.addAction(semicolon)

        add_header = QAction("&Include CSV header",
                             self.tool_window.ui_area,
                             checkable=True)
        add_header.setChecked(self.settings.include_header)
        add_header.triggered.connect(self.header_check)
        export.addAction(add_header)

        comma.triggered.connect(
            lambda *args, action=tab: action.setChecked(False))
        comma.triggered.connect(
            lambda *args, action=space: action.setChecked(False))
        comma.triggered.connect(
            lambda *args, action=semicolon: action.setChecked(False))

        tab.triggered.connect(
            lambda *args, action=comma: action.setChecked(False))
        tab.triggered.connect(
            lambda *args, action=space: action.setChecked(False))
        tab.triggered.connect(
            lambda *args, action=semicolon: action.setChecked(False))

        space.triggered.connect(
            lambda *args, action=comma: action.setChecked(False))
        space.triggered.connect(
            lambda *args, action=tab: action.setChecked(False))
        space.triggered.connect(
            lambda *args, action=semicolon: action.setChecked(False))

        semicolon.triggered.connect(
            lambda *args, action=comma: action.setChecked(False))
        semicolon.triggered.connect(
            lambda *args, action=tab: action.setChecked(False))
        semicolon.triggered.connect(
            lambda *args, action=space: action.setChecked(False))

        menu.setNativeMenuBar(False)
        self._menu = menu
        layout.setMenuBar(menu)
        menu.setVisible(True)

        self.tool_window.ui_area.setLayout(layout)

        self.tool_window.manage(None)

    def clear_table(self):
        are_you_sure = QMessageBox.question(
            None,
            "Clear table?",
            "Are you sure you want to clear the data table?",
        )
        if are_you_sure != QMessageBox.Yes:
            return
        self.table.setRowCount(0)

    def calc_sterimol(self, *args):
        self.settings.radii = self.radii_option.currentText()
        self.settings.display_radii = self.display_radii.checkState(
        ) == Qt.Checked
        self.settings.display_vectors = self.display_vectors.checkState(
        ) == Qt.Checked
        self.settings.at_L = self.at_L.value()
        self.settings.sterimol2vec = self.sterimol2vec.isChecked()
        self.settings.L_option = self.L_option.currentText()

        targets, neighbors, datas = sterimol_cmd(
            self.session,
            selected_atoms(self.session),
            radii=self.radii_option.currentText(),
            showVectors=self.display_vectors.checkState() == Qt.Checked,
            showRadii=self.display_radii.checkState() == Qt.Checked,
            return_values=True,
            at_L=self.at_L.value() if self.sterimol2vec.isChecked() else None,
            bisect_L=self.L_option.currentText() ==
            "bisect angle between coordinating atoms",
        )

        if len(targets) == 0:
            return

        if self.settings.delimiter == "comma":
            delim = ","
        elif self.settings.delimiter == "space":
            delim = " "
        elif self.settings.delimiter == "tab":
            delim = "\t"
        elif self.settings.delimiter == "semicolon":
            delim = ";"

        # self.table.setRowCount(0)

        for t, b, data in zip(targets, neighbors, datas):
            row = self.table.rowCount()
            self.table.insertRow(row)

            targ = QTableWidgetItem()
            targ.setData(Qt.DisplayRole, t)
            self.table.setItem(row, 0, targ)

            neigh = QTableWidgetItem()
            neigh.setData(Qt.DisplayRole, delim.join(b))
            self.table.setItem(row, 1, neigh)

            l = np.linalg.norm(data["L"][1] - data["L"][0])
            b1 = np.linalg.norm(data["B1"][1] - data["B1"][0])
            b2 = np.linalg.norm(data["B2"][1] - data["B2"][0])
            b3 = np.linalg.norm(data["B3"][1] - data["B3"][0])
            b4 = np.linalg.norm(data["B4"][1] - data["B4"][0])
            b5 = np.linalg.norm(data["B5"][1] - data["B5"][0])

            li = QTableWidgetItem()
            li.setData(Qt.DisplayRole, "%.2f" % l)
            self.table.setItem(row, 7, li)

            b1i = QTableWidgetItem()
            b1i.setData(Qt.DisplayRole, "%.2f" % b1)
            self.table.setItem(row, 2, b1i)

            b2i = QTableWidgetItem()
            b2i.setData(Qt.DisplayRole, "%.2f" % b2)
            self.table.setItem(row, 3, b2i)

            b3i = QTableWidgetItem()
            b3i.setData(Qt.DisplayRole, "%.2f" % b3)
            self.table.setItem(row, 4, b3i)

            b4i = QTableWidgetItem()
            b4i.setData(Qt.DisplayRole, "%.2f" % b4)
            self.table.setItem(row, 5, b4i)

            b5i = QTableWidgetItem()
            b5i.setData(Qt.DisplayRole, "%.2f" % b5)
            self.table.setItem(row, 6, b5i)

        for i in range(0, 7):
            if i == 1:
                continue
            self.table.resizeColumnToContents(i)

    def header_check(self, state):
        """user has [un]checked the 'include header' option on the menu"""
        if state:
            self.settings.include_header = True
        else:
            self.settings.include_header = False

    def get_csv(self):
        if self.settings.delimiter == "comma":
            delim = ","
        elif self.settings.delimiter == "space":
            delim = " "
        elif self.settings.delimiter == "tab":
            delim = "\t"
        elif self.settings.delimiter == "semicolon":
            delim = ";"

        if self.settings.include_header:
            s = delim.join([
                "substituent_atom", "bonded_atom", "B1", "B2", "B3", "B4",
                "B5", "L"
            ])
            s += "\n"
        else:
            s = ""

        for i in range(0, self.table.rowCount()):
            s += delim.join([
                item.data(Qt.DisplayRole)
                for item in [self.table.item(i, j) for j in range(0, 8)]
            ])
            s += "\n"

        return s

    def copy_csv(self):
        app = QApplication.instance()
        clipboard = app.clipboard()
        csv = self.get_csv()
        clipboard.setText(csv)
        self.session.logger.status("copied to clipboard")

    def save_csv(self):
        """save data on current tab to CSV file"""
        filename, _ = QFileDialog.getSaveFileName(filter="CSV Files (*.csv)")
        if filename:
            s = self.get_csv()

            with open(filename, 'w') as f:
                f.write(s.strip())

            self.session.logger.status("saved to %s" % filename)

    def del_sterimol(self):
        for model in self.session.models.list(type=Generic3DModel):
            if model.name.startswith("Sterimol"):
                model.delete()

    def display_help(self):
        """Show the help for this tool in the help viewer."""
        from chimerax.core.commands import run
        run(self.session,
            'open %s' % self.help if self.help is not None else "")
Exemplo n.º 2
0
class PercentVolumeBuried(ToolInstance):

    help = "https://github.com/QChASM/SEQCROW/wiki/Buried-Volume-Tool"
    SESSION_ENDURING = False
    SESSION_SAVE = False

    def __init__(self, session, name):
        super().__init__(session, name)

        self.tool_window = MainToolWindow(self)

        self.settings = _VburSettings(self.session, name)

        self.ligand_atoms = []

        self._build_ui()

    def _build_ui(self):
        layout = QGridLayout()

        tabs = QTabWidget()
        calc_widget = QWidget()
        calc_layout = QFormLayout(calc_widget)
        settings_widget = QWidget()
        settings_layout = QFormLayout(settings_widget)
        steric_map_widget = QWidget()
        steric_layout = QFormLayout(steric_map_widget)
        cutout_widget = QWidget()
        vol_cutout_layout = QFormLayout(cutout_widget)
        layout.addWidget(tabs)

        tabs.addTab(calc_widget, "calculation")
        tabs.addTab(settings_widget, "settings")
        tabs.addTab(steric_map_widget, "steric map")
        tabs.addTab(cutout_widget, "volume cutout")

        self.radii_option = QComboBox()
        self.radii_option.addItems(["Bondi", "UMN"])
        ndx = self.radii_option.findText(self.settings.radii, Qt.MatchExactly)
        self.radii_option.setCurrentIndex(ndx)
        settings_layout.addRow("radii:", self.radii_option)

        self.scale = QDoubleSpinBox()
        self.scale.setValue(self.settings.vdw_scale)
        self.scale.setSingleStep(0.01)
        self.scale.setRange(1., 1.5)
        settings_layout.addRow("VDW scale:", self.scale)

        set_ligand_atoms = QPushButton("set ligands to current selection")
        set_ligand_atoms.clicked.connect(self.set_ligand_atoms)
        set_ligand_atoms.setToolTip(
            "specify atoms to use in calculation\n" +
            "by default, all atoms will be used unless a single center is specified\n"
            +
            "in the case of a single center, all atoms except the center is used"
        )
        calc_layout.addRow(set_ligand_atoms)
        self.set_ligand_atoms = set_ligand_atoms

        self.radius = QDoubleSpinBox()
        self.radius.setValue(self.settings.center_radius)
        self.radius.setSuffix(" \u212B")
        self.radius.setDecimals(1)
        self.radius.setSingleStep(0.1)
        self.radius.setRange(1., 15.)
        settings_layout.addRow("radius around center:", self.radius)

        self.method = QComboBox()
        self.method.addItems(["Lebedev", "Monte-Carlo"])
        self.method.setToolTip("Lebedev: deterministic method\n" +
                               "Monte-Carlo: non-deterministic method")
        ndx = self.method.findText(self.settings.method, Qt.MatchExactly)
        self.method.setCurrentIndex(ndx)
        settings_layout.addRow("integration method:", self.method)

        leb_widget = QWidget()
        leb_layout = QFormLayout(leb_widget)
        leb_layout.setContentsMargins(0, 0, 0, 0)

        self.radial_points = QComboBox()
        self.radial_points.addItems(["20", "32", "64", "75", "99", "127"])
        self.radial_points.setToolTip(
            "more radial points will give more accurate results, but integration will take longer"
        )
        ndx = self.radial_points.findText(self.settings.radial_points,
                                          Qt.MatchExactly)
        self.radial_points.setCurrentIndex(ndx)
        leb_layout.addRow("radial points:", self.radial_points)

        self.angular_points = QComboBox()
        self.angular_points.addItems([
            "110", "194", "302", "590", "974", "1454", "2030", "2702", "5810"
        ])
        self.angular_points.setToolTip(
            "more angular points will give more accurate results, but integration will take longer"
        )
        ndx = self.angular_points.findText(self.settings.angular_points,
                                           Qt.MatchExactly)
        self.angular_points.setCurrentIndex(ndx)
        leb_layout.addRow("angular points:", self.angular_points)

        settings_layout.addRow(leb_widget)

        mc_widget = QWidget()
        mc_layout = QFormLayout(mc_widget)
        mc_layout.setContentsMargins(0, 0, 0, 0)

        self.min_iter = QSpinBox()
        self.min_iter.setValue(self.settings.minimum_iterations)
        self.min_iter.setRange(0, 10000)
        self.min_iter.setToolTip(
            "each iteration is 3000 points\n" +
            "iterations continue until convergence criteria are met")
        mc_layout.addRow("minimum interations:", self.min_iter)

        settings_layout.addRow(mc_widget)

        if self.settings.method == "Lebedev":
            mc_widget.setVisible(False)
        elif self.settings.method == "Monte-Carlo":
            leb_widget.setVisible(False)

        self.report_component = QComboBox()
        self.report_component.addItems(["total", "quadrants", "octants"])
        ndx = self.report_component.findText(self.settings.report_component,
                                             Qt.MatchExactly)
        self.report_component.setCurrentIndex(ndx)
        settings_layout.addRow("report volume:", self.report_component)

        self.use_scene = QCheckBox()
        self.use_scene.setChecked(self.settings.use_scene)
        self.use_scene.setToolTip(
            "quadrants/octants will use the orientation the molecule is displayed in"
        )
        settings_layout.addRow("use display orientation:", self.use_scene)

        self.method.currentTextChanged.connect(
            lambda text, widget=leb_widget: widget.setVisible(text == "Lebedev"
                                                              ))
        self.method.currentTextChanged.connect(
            lambda text, widget=mc_widget: widget.setVisible(text ==
                                                             "Monte-Carlo"))

        self.use_centroid = QCheckBox()
        self.use_centroid.setChecked(self.settings.use_centroid)
        self.use_centroid.setToolTip(
            "place the center between selected atoms\n" +
            "might be useful for polydentate ligands")
        calc_layout.addRow("use centroid of centers:", self.use_centroid)

        self.steric_map = QCheckBox()
        self.steric_map.setChecked(self.settings.steric_map)
        self.steric_map.setToolTip(
            "produce a 2D projection of steric bulk\ncauses buried volume to be reported for individual quadrants"
        )
        steric_layout.addRow("create steric map:", self.steric_map)

        self.num_pts = QSpinBox()
        self.num_pts.setRange(25, 250)
        self.num_pts.setValue(self.settings.num_pts)
        self.num_pts.setToolTip("number of points along x and y axes")
        steric_layout.addRow("number of points:", self.num_pts)

        self.include_vbur = QCheckBox()
        self.include_vbur.setChecked(self.settings.include_vbur)
        steric_layout.addRow("label quadrants with %V<sub>bur</sub>",
                             self.include_vbur)

        self.map_shape = QComboBox()
        self.map_shape.addItems(["circle", "square"])
        ndx = self.map_shape.findText(self.settings.map_shape, Qt.MatchExactly)
        self.map_shape.setCurrentIndex(ndx)
        steric_layout.addRow("map shape:", self.map_shape)

        self.auto_minmax = QCheckBox()
        self.auto_minmax.setChecked(self.settings.auto_minmax)
        steric_layout.addRow("automatic min. and max.:", self.auto_minmax)

        self.map_min = QDoubleSpinBox()
        self.map_min.setRange(-15., 0.)
        self.map_min.setSuffix(" \u212B")
        self.map_min.setSingleStep(0.1)
        self.map_min.setValue(self.settings.map_min)
        steric_layout.addRow("minimum value:", self.map_min)

        self.map_max = QDoubleSpinBox()
        self.map_max.setRange(0., 15.)
        self.map_max.setSuffix(" \u212B")
        self.map_max.setSingleStep(0.1)
        self.map_max.setValue(self.settings.map_max)
        steric_layout.addRow("maximum value:", self.map_max)

        self.num_pts.setEnabled(self.settings.steric_map)
        self.steric_map.stateChanged.connect(
            lambda state, widget=self.num_pts: widget.setEnabled(state == Qt.
                                                                 Checked))

        self.include_vbur.setEnabled(self.settings.steric_map)
        self.steric_map.stateChanged.connect(
            lambda state, widget=self.include_vbur: widget.setEnabled(
                state == Qt.Checked))

        self.map_shape.setEnabled(self.settings.steric_map)
        self.steric_map.stateChanged.connect(
            lambda state, widget=self.map_shape: widget.setEnabled(state == Qt.
                                                                   Checked))

        self.auto_minmax.setEnabled(self.settings.steric_map)
        self.steric_map.stateChanged.connect(
            lambda state, widget=self.auto_minmax: widget.setEnabled(
                state == Qt.Checked))

        self.map_min.setEnabled(not self.settings.auto_minmax
                                and self.settings.steric_map)
        self.steric_map.stateChanged.connect(
            lambda state, widget=self.map_min, widget2=self.auto_minmax: widget
            .setEnabled(state == Qt.Checked and not widget2.isChecked()))
        self.auto_minmax.stateChanged.connect(
            lambda state, widget=self.map_min, widget2=self.steric_map: widget.
            setEnabled(not state == Qt.Checked and widget2.isChecked()))

        self.map_max.setEnabled(not self.settings.auto_minmax
                                and self.settings.steric_map)
        self.steric_map.stateChanged.connect(
            lambda state, widget=self.map_max, widget2=self.auto_minmax: widget
            .setEnabled(state == Qt.Checked and not widget2.isChecked()))
        self.auto_minmax.stateChanged.connect(
            lambda state, widget=self.map_max, widget2=self.steric_map: widget.
            setEnabled(not state == Qt.Checked and widget2.isChecked()))

        self.display_cutout = QComboBox()
        self.display_cutout.addItems(["no", "free", "buried"])
        ndx = self.display_cutout.findText(self.settings.display_cutout,
                                           Qt.MatchExactly)
        self.display_cutout.setCurrentIndex(ndx)
        self.display_cutout.setToolTip("show free or buried volume")
        vol_cutout_layout.addRow("display volume:", self.display_cutout)

        self.point_spacing = QDoubleSpinBox()
        self.point_spacing.setDecimals(3)
        self.point_spacing.setRange(0.01, 0.5)
        self.point_spacing.setSingleStep(0.005)
        self.point_spacing.setSuffix(" \u212B")
        self.point_spacing.setValue(self.settings.point_spacing)
        self.point_spacing.setToolTip(
            "distance between points on cutout\n" +
            "smaller spacing will narrow gaps, but increase time to create the cutout"
        )
        vol_cutout_layout.addRow("point spacing:", self.point_spacing)

        self.intersection_scale = QDoubleSpinBox()
        self.intersection_scale.setDecimals(2)
        self.intersection_scale.setRange(1., 10.)
        self.intersection_scale.setSingleStep(0.5)
        self.intersection_scale.setSuffix("x")
        self.intersection_scale.setToolTip(
            "relative density of points where VDW radii intersect\n" +
            "higher density will narrow gaps, but increase time to create cutout"
        )
        self.intersection_scale.setValue(self.settings.intersection_scale)
        vol_cutout_layout.addRow("intersection density:",
                                 self.intersection_scale)

        self.cutout_labels = QComboBox()
        self.cutout_labels.addItems(["none", "quadrants", "octants"])
        ndx = self.cutout_labels.findText(self.settings.cutout_labels,
                                          Qt.MatchExactly)
        self.cutout_labels.setCurrentIndex(ndx)
        vol_cutout_layout.addRow("label sections:", self.cutout_labels)

        self.point_spacing.setEnabled(self.settings.display_cutout != "no")
        self.intersection_scale.setEnabled(
            self.settings.display_cutout != "no")
        self.cutout_labels.setEnabled(self.settings.display_cutout != "no")

        self.display_cutout.currentTextChanged.connect(
            lambda text, widget=self.point_spacing: widget.setEnabled(text !=
                                                                      "no"))
        self.display_cutout.currentTextChanged.connect(
            lambda text, widget=self.intersection_scale: widget.setEnabled(
                text != "no"))
        self.display_cutout.currentTextChanged.connect(
            lambda text, widget=self.cutout_labels: widget.setEnabled(text !=
                                                                      "no"))

        calc_vbur_button = QPushButton(
            "calculate % buried volume for selected centers")
        calc_vbur_button.clicked.connect(self.calc_vbur)
        calc_layout.addRow(calc_vbur_button)
        self.calc_vbur_button = calc_vbur_button

        remove_vbur_button = QPushButton(
            "remove % buried volume visualizations")
        remove_vbur_button.clicked.connect(self.del_vbur)
        vol_cutout_layout.addRow(remove_vbur_button)

        self.table = QTableWidget()
        self.table.setColumnCount(3)
        self.table.setHorizontalHeaderLabels(['model', 'center', '%Vbur'])
        self.table.setSelectionBehavior(QTableWidget.SelectRows)
        self.table.setEditTriggers(QTableWidget.NoEditTriggers)
        self.table.resizeColumnToContents(0)
        self.table.resizeColumnToContents(1)
        self.table.resizeColumnToContents(2)
        self.table.horizontalHeader().setSectionResizeMode(
            0, QHeaderView.Interactive)
        self.table.horizontalHeader().setSectionResizeMode(
            1, QHeaderView.Interactive)
        self.table.horizontalHeader().setSectionResizeMode(
            2, QHeaderView.Stretch)
        calc_layout.addRow(self.table)

        menu = QMenuBar()

        export = menu.addMenu("&Export")

        clear = QAction("Clear data table", self.tool_window.ui_area)
        clear.triggered.connect(self.clear_table)
        export.addAction(clear)

        copy = QAction("&Copy CSV to clipboard", self.tool_window.ui_area)
        copy.triggered.connect(self.copy_csv)
        shortcut = QKeySequence(Qt.CTRL + Qt.Key_C)
        copy.setShortcut(shortcut)
        export.addAction(copy)
        self.copy = copy

        save = QAction("&Save CSV...", self.tool_window.ui_area)
        save.triggered.connect(self.save_csv)
        #this shortcut interferes with main window's save shortcut
        #I've tried different shortcut contexts to no avail
        #thanks Qt...
        #shortcut = QKeySequence(Qt.CTRL + Qt.Key_S)
        #save.setShortcut(shortcut)
        #save.setShortcutContext(Qt.WidgetShortcut)
        export.addAction(save)

        delimiter = export.addMenu("Delimiter")

        comma = QAction("comma", self.tool_window.ui_area, checkable=True)
        comma.setChecked(self.settings.delimiter == "comma")
        comma.triggered.connect(lambda *args, delim="comma": self.settings.
                                __setattr__("delimiter", delim))
        delimiter.addAction(comma)

        tab = QAction("tab", self.tool_window.ui_area, checkable=True)
        tab.setChecked(self.settings.delimiter == "tab")
        tab.triggered.connect(lambda *args, delim="tab": self.settings.
                              __setattr__("delimiter", delim))
        delimiter.addAction(tab)

        space = QAction("space", self.tool_window.ui_area, checkable=True)
        space.setChecked(self.settings.delimiter == "space")
        space.triggered.connect(lambda *args, delim="space": self.settings.
                                __setattr__("delimiter", delim))
        delimiter.addAction(space)

        semicolon = QAction("semicolon",
                            self.tool_window.ui_area,
                            checkable=True)
        semicolon.setChecked(self.settings.delimiter == "semicolon")
        semicolon.triggered.connect(lambda *args, delim="semicolon": self.
                                    settings.__setattr__("delimiter", delim))
        delimiter.addAction(semicolon)

        add_header = QAction("&Include CSV header",
                             self.tool_window.ui_area,
                             checkable=True)
        add_header.setChecked(self.settings.include_header)
        add_header.triggered.connect(self.header_check)
        export.addAction(add_header)

        comma.triggered.connect(
            lambda *args, action=tab: action.setChecked(False))
        comma.triggered.connect(
            lambda *args, action=space: action.setChecked(False))
        comma.triggered.connect(
            lambda *args, action=semicolon: action.setChecked(False))

        tab.triggered.connect(
            lambda *args, action=comma: action.setChecked(False))
        tab.triggered.connect(
            lambda *args, action=space: action.setChecked(False))
        tab.triggered.connect(
            lambda *args, action=semicolon: action.setChecked(False))

        space.triggered.connect(
            lambda *args, action=comma: action.setChecked(False))
        space.triggered.connect(
            lambda *args, action=tab: action.setChecked(False))
        space.triggered.connect(
            lambda *args, action=semicolon: action.setChecked(False))

        semicolon.triggered.connect(
            lambda *args, action=comma: action.setChecked(False))
        semicolon.triggered.connect(
            lambda *args, action=tab: action.setChecked(False))
        semicolon.triggered.connect(
            lambda *args, action=space: action.setChecked(False))

        menu.setNativeMenuBar(False)
        self._menu = menu
        layout.setMenuBar(menu)
        menu.setVisible(True)

        self.tool_window.ui_area.setLayout(layout)

        self.tool_window.manage(None)

    def clear_table(self):
        are_you_sure = QMessageBox.question(
            None,
            "Clear table?",
            "Are you sure you want to clear the data table?",
        )
        if are_you_sure != QMessageBox.Yes:
            return
        self.table.setRowCount(0)

    def set_ligand_atoms(self):
        self.ligand_atoms = selected_atoms(self.session)
        self.session.logger.status("set ligand to current selection")

    def calc_vbur(self):
        args = dict()

        cur_sel = selected_atoms(self.session)
        if len(cur_sel) == 0:
            return

        models = []
        for atom in cur_sel:
            if atom.structure not in models:
                models.append(atom.structure)

        center = []
        for atom in cur_sel:
            center.append(atom)

        args["center"] = center

        radii = self.radii_option.currentText()
        self.settings.radii = radii
        args["radii"] = radii

        scale = self.scale.value()
        self.settings.vdw_scale = scale
        args["scale"] = scale

        radius = self.radius.value()
        self.settings.center_radius = radius
        args["radius"] = radius

        steric_map = self.steric_map.checkState() == Qt.Checked
        self.settings.steric_map = steric_map
        args["steric_map"] = steric_map

        use_scene = self.use_scene.checkState() == Qt.Checked
        self.settings.use_scene = use_scene
        args["useScene"] = use_scene

        num_pts = self.num_pts.value()
        self.settings.num_pts = num_pts
        args["num_pts"] = num_pts

        include_vbur = self.include_vbur.checkState() == Qt.Checked
        self.settings.include_vbur = include_vbur

        use_centroid = self.use_centroid.checkState() == Qt.Checked
        self.settings.use_centroid = use_centroid
        args["useCentroid"] = use_centroid

        shape = self.map_shape.currentText()
        self.settings.map_shape = shape
        args["shape"] = shape

        report_component = self.report_component.currentText()
        self.settings.report_component = report_component
        args["reportComponent"] = report_component

        method = self.method.currentText()
        self.settings.method = method

        if method == "Lebedev":
            args["method"] = "lebedev"
            rad_pts = self.radial_points.currentText()
            self.settings.radial_points = rad_pts
            args["radialPoints"] = rad_pts

            ang_pts = self.angular_points.currentText()
            self.settings.angular_points = ang_pts
            args["angularPoints"] = ang_pts

        elif method == "Monte-Carlo":
            args["method"] = "mc"
            min_iter = self.min_iter.value()
            self.settings.minimum_iterations = min_iter
            args["minimumIterations"] = min_iter

        display_cutout = self.display_cutout.currentText()
        self.settings.display_cutout = display_cutout
        if display_cutout != "no":
            args["displaySphere"] = display_cutout

        if display_cutout != "no":
            point_spacing = self.point_spacing.value()
            self.settings.point_spacing = point_spacing
            args["pointSpacing"] = point_spacing

            intersection_scale = self.intersection_scale.value()
            self.settings.intersection_scale = intersection_scale
            args["intersectionScale"] = intersection_scale

            cutout_labels = self.cutout_labels.currentText()
            self.settings.cutout_labels = cutout_labels
            args["labels"] = cutout_labels

        if len(self.ligand_atoms) > 0:
            args["onlyAtoms"] = [a for a in self.ligand_atoms if not a.deleted]
            if len(args["onlyAtoms"]) == 0:
                args["onlyAtoms"] = None

        auto_minmax = self.auto_minmax.checkState() == Qt.Checked
        self.settings.auto_minmax = auto_minmax
        if not auto_minmax:
            map_max = self.map_max.value()
            self.settings.map_max = map_max

            map_min = self.settings.map_min
            self.settings.map_min = map_min

        info = percent_vbur_cmd(self.session,
                                models,
                                return_values=True,
                                **args)

        # self.table.setRowCount(0)

        if steric_map:
            for mdl, cent, vbur, map_info in info:
                row = self.table.rowCount()
                self.table.insertRow(row)

                m = QTableWidgetItem()
                m.setData(Qt.DisplayRole, mdl.name)
                self.table.setItem(row, 0, m)

                c = QTableWidgetItem()
                c.setData(Qt.DisplayRole, cent)
                self.table.setItem(row, 1, c)

                v = QTableWidgetItem()
                if report_component == "octants":
                    v.setData(Qt.DisplayRole,
                              ",".join(["%.1f" % x for x in vbur]))
                elif report_component == "quadrants":
                    v.setData(
                        Qt.DisplayRole, ",".join("%.1f" % x for x in [
                            vbur[0] + vbur[7],
                            vbur[1] + vbur[6],
                            vbur[2] + vbur[5],
                            vbur[3] + vbur[4],
                        ]))
                else:
                    if hasattr(vbur, "__iter__"):
                        v.setData(Qt.DisplayRole, "%.1f" % sum(vbur))
                    else:
                        v.setData(Qt.DisplayRole, "%.1f" % vbur)
                v.setTextAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
                self.table.setItem(row, 2, v)

                x, y, z, min_alt, max_alt = map_info
                plot = self.tool_window.create_child_window(
                    "steric map of %s" % mdl.name, window_class=StericMap)
                if auto_minmax:
                    plot.set_data(x, y, z, min_alt, max_alt, vbur, radius,
                                  include_vbur)
                else:
                    plot.set_data(x, y, z, map_min, map_max, vbur, radius,
                                  include_vbur)

        else:
            for mdl, cent, vbur in info:
                row = self.table.rowCount()
                self.table.insertRow(row)

                m = QTableWidgetItem()
                m.setData(Qt.DisplayRole, mdl.name)
                self.table.setItem(row, 0, m)

                c = QTableWidgetItem()
                c.setData(Qt.DisplayRole, cent)
                self.table.setItem(row, 1, c)

                v = QTableWidgetItem()
                if report_component == "octants":
                    v.setData(Qt.DisplayRole,
                              ",".join(["%.1f" % x for x in vbur]))
                elif report_component == "quadrants":
                    v.setData(
                        Qt.DisplayRole, ",".join("%.1f" % x for x in [
                            vbur[0] + vbur[7],
                            vbur[1] + vbur[6],
                            vbur[2] + vbur[5],
                            vbur[3] + vbur[4],
                        ]))
                else:
                    if hasattr(vbur, "__iter__"):
                        v.setData(Qt.DisplayRole, "%.1f" % sum(vbur))
                    else:
                        v.setData(Qt.DisplayRole, "%.1f" % vbur)
                v.setTextAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
                self.table.setItem(row, 2, v)

        self.table.resizeColumnToContents(1)
        self.table.resizeColumnToContents(2)

    def header_check(self, state):
        """user has [un]checked the 'include header' option on the menu"""
        if state:
            self.settings.include_header = True
        else:
            self.settings.include_header = False

    def get_csv(self):
        if self.settings.delimiter == "comma":
            delim = ","
        elif self.settings.delimiter == "space":
            delim = " "
        elif self.settings.delimiter == "tab":
            delim = "\t"
        elif self.settings.delimiter == "semicolon":
            delim = ";"

        if self.settings.include_header:
            s = delim.join(["model", "center", "%Vbur"])
            s += "\n"
        else:
            s = ""

        for i in range(0, self.table.rowCount()):
            s += delim.join([
                item.data(Qt.DisplayRole)
                for item in [self.table.item(i, j) for j in range(0, 3)]
            ])
            s += "\n"

        return s

    def copy_csv(self):
        app = QApplication.instance()
        clipboard = app.clipboard()
        csv = self.get_csv()
        clipboard.setText(csv)
        self.session.logger.status("copied to clipboard")

    def save_csv(self):
        """save data on current tab to CSV file"""
        filename, _ = QFileDialog.getSaveFileName(filter="CSV Files (*.csv)")
        if filename:
            s = self.get_csv()

            with open(filename, 'w') as f:
                f.write(s.strip())

            self.session.logger.status("saved to %s" % filename)

    def del_vbur(self):
        for model in self.session.models.list(type=Surface):
            if model.name.startswith("%Vbur") or model.name.startswith(
                    "%Vfree"):
                model.delete()

    def display_help(self):
        """Show the help for this tool in the help viewer."""
        from chimerax.core.commands import run
        run(self.session,
            'open %s' % self.help if self.help is not None else "")