How to use the vaex.ui.icons.iconfile function in vaex

self.menu_mode.addAction(self.action_select_mode_xor)
		self.menu_mode.addAction(self.action_select_mode_subtract)

		self.action_samp_send_table_select_row_list = QtGui.QAction(QtGui.QIcon(iconfile('block--arrow')), 'Broadcast selection over SAMP', self)
		self.action_samp_send_table_select_row_list.setShortcut('Ctrl+Shift+B')
		#self.toolbar.addAction(self.action_samp_sand_table_select_row_list)
		self.menu_samp.addAction(self.action_samp_send_table_select_row_list)
		def send_samp_selection(ignore=None):
			self.signal_samp_send_selection.emit(self.dataset)
		self.send_samp_selection_reference = send_samp_selection # does this fix the bug that clicking the buttons doesn't do anything?
		self.action_samp_send_table_select_row_list.triggered.connect(send_samp_selection)

		self.action_display_mode_both = QtGui.QAction(QtGui.QIcon(iconfile('picture_empty')), 'Show both', self)
		self.action_display_mode_full = QtGui.QAction(QtGui.QIcon(iconfile('picture_empty')), 'Show full', self)
		self.action_display_mode_selection = QtGui.QAction(QtGui.QIcon(iconfile('picture_empty')), 'Show selection', self)
		self.action_display_mode_both_contour = QtGui.QAction(QtGui.QIcon(iconfile('picture_empty')), 'Show contour', self)



		#self.actions_resolution = []

		self.actions_display = [self.action_display_mode_both, self.action_display_mode_full, self.action_display_mode_selection, self.action_display_mode_both_contour]
		for action in self.actions_display:
			self.action_group_display.addAction(action)
			action.setCheckable(True)
		action = self.actions_display[0]
		action.setChecked(True)
		self.action_display_current = action
		self.action_group_display.triggered.connect(self.onActionDisplay)
		#self.zoomButton = QtGui.QToolButton(self, )
		#$self.zoomButton.setIcon(QtGui.QIcon(iconfile('glue_zoom_to_rect')))
		#self.zoomMenu = QtGui.QMenu(self)

self.action_mini_mode_compact = QtGui.QAction(QtGui.QIcon(iconfile('layout-hf')), 'Compact', self)
		self.action_mini_mode_ultra  = QtGui.QAction(QtGui.QIcon(iconfile('layout')), 'Ultra compact', self)
		self.action_mini_mode_normal.setShortcut("Ctrl+Shift+N")
		self.action_mini_mode_compact.setShortcut("Ctrl+Shift+C")
		self.action_mini_mode_ultra.setShortcut("Ctrl+Shift+U")

		self.action_group_mini_mode = QtGui.QActionGroup(self)
		self.action_group_mini_mode.addAction(self.action_mini_mode_normal)
		self.action_group_mini_mode.addAction(self.action_mini_mode_compact)
		self.action_group_mini_mode.addAction(self.action_mini_mode_ultra)

		self.action_fullscreen = QtGui.QAction(QtGui.QIcon(iconfile('picture_empty')), '&Fullscreen', self)
		self.action_fullscreen.setCheckable(True)
		self.action_fullscreen.setShortcut(("Ctrl+F"))

		self.action_toolbar_toggle = QtGui.QAction(QtGui.QIcon(iconfile('ui-toolbar')), '&Toolbars', self)
		self.action_toolbar_toggle.setCheckable(True)
		self.action_toolbar_toggle.setChecked(True)
		self.action_toolbar_toggle.setShortcut(("Ctrl+Shift+T"))

		#self.actiongroup_mini_mode.addAction(self.action_fullscreen)


		def toggle_fullscreen(ignore=None):
			fullscreen = self.windowState() & QtCore.Qt.WindowFullScreen
			fullscreen = not fullscreen # toggle
			self.action_fullscreen.setChecked(fullscreen)
			if fullscreen:
				self.setWindowState(self.windowState() | QtCore.Qt.WindowFullScreen);
			else:
				self.setWindowState(self.windowState() ^ QtCore.Qt.WindowFullScreen);

self.action_zoom_rect = QtGui.QAction(QtGui.QIcon(iconfile('zoom')), '&Zoom to rect', self.dialog)
		self.action_zoom_rect.setShortcut("Ctrl+Alt+Z")
		self.dialog.menu_mode.addAction(self.action_zoom_rect)

		self.action_zoom_x = QtGui.QAction(QtGui.QIcon(iconfile('zoom_x')), '&Zoom x', self.dialog)
		self.action_zoom_y = QtGui.QAction(QtGui.QIcon(iconfile('zoom_y')), '&Zoom y', self.dialog)
		self.action_zoom = QtGui.QAction(QtGui.QIcon(iconfile('zoom')), '&Zoom(you should not read this)', self.dialog)

		self.action_zoom_x.setShortcut("Ctrl+Alt+X")
		self.action_zoom_y.setShortcut("Ctrl+Alt+Y")
		self.dialog.menu_mode.addAction(self.action_zoom_x)
		self.dialog.menu_mode.addAction(self.action_zoom_y)


		self.dialog.menu_mode.addSeparator()
		self.action_zoom_out = QtGui.QAction(QtGui.QIcon(iconfile('zoom_out')), '&Zoom out', self.dialog)
		self.action_zoom_in = QtGui.QAction(QtGui.QIcon(iconfile('zoom_in')), '&Zoom in', self.dialog)
		self.action_zoom_fit = QtGui.QAction(QtGui.QIcon(iconfile('arrow_out')), '&Reset view', self.dialog)
		#self.action_zoom_use = QtGui.QAction(QtGui.QIcon(iconfile('chart_bar')), '&Use zoom area', self.dialog)
		self.action_zoom_out.setShortcut("Ctrl+Alt+-")
		self.action_zoom_in.setShortcut("Ctrl+Alt++")
		self.action_zoom_fit.setShortcut("Ctrl+Alt+0")
		self.dialog.menu_mode.addAction(self.action_zoom_out)
		self.dialog.menu_mode.addAction(self.action_zoom_in)
		self.dialog.menu_mode.addAction(self.action_zoom_fit)



		self.dialog.action_group_main.addAction(self.action_zoom_rect)
		self.dialog.action_group_main.addAction(self.action_zoom_x)
		self.dialog.action_group_main.addAction(self.action_zoom_y)

if path:
					_, ext = os.path.splitext(path)
					data = self.dataset.get_selection().to_dict()
					if ext == ".yaml":
						import yaml
						with open(path, "w") as f:
							yaml.dump(data, f)
					elif ext == ".json":
						import json
						with open(path, "w") as f:
							json.dump(data, f)
					else:
						dialogs.dialog_error(self, "Unknown extension", "Unknown extension %r" % ext)
					#np.save(path, self.dataset.mask)

		self.action_selection_store = QtGui.QAction(QtGui.QIcon(iconfile('tag-export')), '&Store selection', self)
		self.action_selection_store.triggered.connect(on_store_selection)
		#self.action_selection_store.setCheckable(True)
		#self.toolbar2.addAction(self.action_selection_store)
		self.menu_selection.addAction(self.action_selection_store)

		def on_load_selection():
			path = self.dataset.name + "-selection.yaml"
			path = get_path_open(self, "Open selection", path, "Compatible files for vaex (*.yaml *.json)")
			if path:
				_, ext = os.path.splitext(path)
				if ext == ".yaml":
					import yaml
					with open(path) as f:
						data = yaml.load(f)
				elif ext == ".json":
					import json

self.action_move.setShortcut("Ctrl+M")
		self.menu_mode.addAction(self.action_move)

		self.action_pick = QtGui.QAction(QtGui.QIcon(iconfile('cursor')), '&Pick', self)
		self.action_pick.setShortcut("Ctrl+P")
		self.menu_mode.addAction(self.action_pick)

		self.action_select = QtGui.QAction(QtGui.QIcon(iconfile('glue_lasso16')), '&Select(you should not read this)', self)
		self.action_xrange = QtGui.QAction(QtGui.QIcon(iconfile('glue_xrange_select16')), '&x-range', self)
		self.action_yrange = QtGui.QAction(QtGui.QIcon(iconfile('glue_yrange_select16')), '&y-range', self)
		self.action_lasso = QtGui.QAction(QtGui.QIcon(iconfile('glue_lasso16')), '&Lasso', self)
		self.action_select_rectangle = QtGui.QAction(QtGui.QIcon(iconfile('glue_square16')), '&Rectangle', self)
		self.action_slice = QtGui.QAction(QtGui.QIcon(iconfile('cutlery-knife')), '&Slice', self)
		self.action_select_viewport = QtGui.QAction(QtGui.QIcon(iconfile('control-stop-square')), '&Select viewport', self)
		self.action_select_none = QtGui.QAction(QtGui.QIcon(iconfile('cross')), '&No selection', self)
		self.action_select_invert = QtGui.QAction(QtGui.QIcon(iconfile('arrow-circle-double-135')), '&Invert', self)

		self.action_xrange.setShortcut("Ctrl+Shift+X")
		self.menu_mode.addAction(self.action_xrange)
		self.action_yrange.setShortcut("Ctrl+Shift+Y")
		self.menu_mode.addAction(self.action_yrange)
		self.action_lasso.setShortcut("Ctrl+L")
		self.menu_mode.addAction(self.action_lasso)
		self.action_select_rectangle.setShortcut("Ctrl+R")
		self.menu_mode.addAction(self.action_select_rectangle)
		self.action_slice.setShortcut("Ctrl+S")
		self.menu_mode.addAction(self.action_slice)
		self.action_select_viewport.setShortcut("Ctrl+Shift+V")
		self.menu_mode.addAction(self.action_select_viewport)
		self.action_select_none.setShortcut("Ctrl+N")
		self.menu_mode.addAction(self.action_select_none)
		self.action_select_invert.setShortcut("Ctrl+I")

def plug_toolbar(self):
		logger.info("adding zoom plugin")
		self.dialog.menu_mode.addSeparator()
		self.action_zoom_rect = QtGui.QAction(QtGui.QIcon(iconfile('zoom')), '&Zoom to rect', self.dialog)
		self.action_zoom_rect.setShortcut("Ctrl+Alt+Z")
		self.dialog.menu_mode.addAction(self.action_zoom_rect)

		self.action_zoom_x = QtGui.QAction(QtGui.QIcon(iconfile('zoom_x')), '&Zoom x', self.dialog)
		self.action_zoom_y = QtGui.QAction(QtGui.QIcon(iconfile('zoom_y')), '&Zoom y', self.dialog)
		self.action_zoom = QtGui.QAction(QtGui.QIcon(iconfile('zoom')), '&Zoom(you should not read this)', self.dialog)

		self.action_zoom_x.setShortcut("Ctrl+Alt+X")
		self.action_zoom_y.setShortcut("Ctrl+Alt+Y")
		self.dialog.menu_mode.addAction(self.action_zoom_x)
		self.dialog.menu_mode.addAction(self.action_zoom_y)


		self.dialog.menu_mode.addSeparator()
		self.action_zoom_out = QtGui.QAction(QtGui.QIcon(iconfile('zoom_out')), '&Zoom out', self.dialog)
		self.action_zoom_in = QtGui.QAction(QtGui.QIcon(iconfile('zoom_in')), '&Zoom in', self.dialog)
		self.action_zoom_fit = QtGui.QAction(QtGui.QIcon(iconfile('arrow_out')), '&Reset view', self.dialog)
		#self.action_zoom_use = QtGui.QAction(QtGui.QIcon(iconfile('chart_bar')), '&Use zoom area', self.dialog)
		self.action_zoom_out.setShortcut("Ctrl+Alt+-")
		self.action_zoom_in.setShortcut("Ctrl+Alt++")

self.action_toolbar_toggle.triggered.connect(self.on_toolbar_toggle)

		self.action_move = QtGui.QAction(QtGui.QIcon(iconfile('edit-move')), '&Move', self)
		self.action_move.setShortcut("Ctrl+M")
		self.menu_mode.addAction(self.action_move)

		self.action_pick = QtGui.QAction(QtGui.QIcon(iconfile('cursor')), '&Pick', self)
		self.action_pick.setShortcut("Ctrl+P")
		self.menu_mode.addAction(self.action_pick)

		self.action_select = QtGui.QAction(QtGui.QIcon(iconfile('glue_lasso16')), '&Select(you should not read this)', self)
		self.action_xrange = QtGui.QAction(QtGui.QIcon(iconfile('glue_xrange_select16')), '&x-range', self)
		self.action_yrange = QtGui.QAction(QtGui.QIcon(iconfile('glue_yrange_select16')), '&y-range', self)
		self.action_lasso = QtGui.QAction(QtGui.QIcon(iconfile('glue_lasso16')), '&Lasso', self)
		self.action_select_rectangle = QtGui.QAction(QtGui.QIcon(iconfile('glue_square16')), '&Rectangle', self)
		self.action_slice = QtGui.QAction(QtGui.QIcon(iconfile('cutlery-knife')), '&Slice', self)
		self.action_select_viewport = QtGui.QAction(QtGui.QIcon(iconfile('control-stop-square')), '&Select viewport', self)
		self.action_select_none = QtGui.QAction(QtGui.QIcon(iconfile('cross')), '&No selection', self)
		self.action_select_invert = QtGui.QAction(QtGui.QIcon(iconfile('arrow-circle-double-135')), '&Invert', self)

		self.action_xrange.setShortcut("Ctrl+Shift+X")
		self.menu_mode.addAction(self.action_xrange)
		self.action_yrange.setShortcut("Ctrl+Shift+Y")
		self.menu_mode.addAction(self.action_yrange)
		self.action_lasso.setShortcut("Ctrl+L")
		self.menu_mode.addAction(self.action_lasso)
		self.action_select_rectangle.setShortcut("Ctrl+R")
		self.menu_mode.addAction(self.action_select_rectangle)
		self.action_slice.setShortcut("Ctrl+S")
		self.menu_mode.addAction(self.action_slice)
		self.action_select_viewport.setShortcut("Ctrl+Shift+V")

self.button_layer_new = QtGui.QToolButton(self)
		self.button_layer_new.setIcon(QtGui.QIcon(iconfile("layer--plus")))
		self.button_layer_new.setPopupMode(QtGui.QToolButton.InstantPopup)
		self.button_layer_new.setToolButtonStyle(QtCore.Qt.ToolButtonTextBesideIcon)

		toolbuttonSizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Preferred, QtGui.QSizePolicy.Fixed)
		self.button_layer_new.setSizePolicy(toolbuttonSizePolicy)

		self.button_layer_new.setText("add")
		self.button_layer_new.setEnabled(self.dimensions < 3)
		self.menu_layer_new = QtGui.QMenu()
		self.fill_menu_layer_new()
		self.button_layer_new.setMenu(self.menu_layer_new)
		self.button_layer_delete = QtGui.QToolButton(self)
		self.button_layer_delete.setIcon(QtGui.QIcon(iconfile("layer--minus")))
		self.button_layer_delete.setText("remove")
		self.button_layer_delete.setToolButtonStyle(QtCore.Qt.ToolButtonTextBesideIcon)
		self.button_layer_delete.setSizePolicy(toolbuttonSizePolicy)
		self.button_layer_delete.setEnabled(self.dimensions < 3)
		def on_layer_remove(_ignore=None):
			logger.debug("remove layer")
			self.remove_layer()
		self.button_layer_delete.clicked.connect(on_layer_remove)
		self.layout_layer_buttons.addWidget(self.button_layer_new, 0)
		self.layout_layer_buttons.addWidget(self.button_layer_delete, 0)



		self.layer_selection = QtGui.QComboBox(self)
		self.layer_selection.addItems(["Layer controls"])
		self.layout_layer_box.addLayout(self.layout_layer_buttons)

def __(self):

		self.action_store  = QtGui.QAction(QtGui.QIcon(iconfile('gear')), 'Store', self.dialog)
		self.action_store.setShortcut("Ctrl+B")
		self.action_store_toolbar  = QtGui.QAction(QtGui.QIcon(iconfile('star')), 'Store', self.dialog)


		self.dialog.toolbar.addAction(self.action_store_toolbar)
		self.action_store.triggered.connect(self.on_store)
		self.action_store_toolbar.triggered.connect(self.on_store)
		self.changed_handle = storage_plots.changed.connect(self.load_options_menu)
		self.load_options_menu()

		self.dialog.menu_mode.addSeparator()
		self.action_zoom_rect = QtGui.QAction(QtGui.QIcon(iconfile('zoom')), '&Zoom to rect', self.dialog)
		self.action_zoom_rect.setShortcut("Ctrl+Alt+Z")
		self.dialog.menu_mode.addAction(self.action_zoom_rect)

		self.action_zoom_x = QtGui.QAction(QtGui.QIcon(iconfile('zoom_x')), '&Zoom x', self.dialog)

self.action_select_viewport.setShortcut("Ctrl+Shift+V")
		self.menu_mode.addAction(self.action_select_viewport)
		self.action_select_none.setShortcut("Ctrl+N")
		self.menu_mode.addAction(self.action_select_none)
		self.action_select_invert.setShortcut("Ctrl+I")
		self.menu_mode.addAction(self.action_select_invert)


		self.menu_mode.addSeparator()
		self.action_select_invert.setShortcut("Ctrl+I")
		#self.menu_mode_select_mode = QtGui.QMenu("Select mode")
		#self.menu_mode.addMenu(self.menu_mode_select_mode)

		self.action_select_mode_replace = QtGui.QAction(QtGui.QIcon(iconfile('sql-join-right')), '&Replace', self)
		self.action_select_mode_and = QtGui.QAction(QtGui.QIcon(iconfile('sql-join-inner')), '&And', self)
		self.action_select_mode_or = QtGui.QAction(QtGui.QIcon(iconfile('sql-join-outer')), '&Or', self)
		self.action_select_mode_xor = QtGui.QAction(QtGui.QIcon(iconfile('sql-join-outer-exclude')), 'Xor', self)
		self.action_select_mode_subtract = QtGui.QAction(QtGui.QIcon(iconfile('sql-join-left-exclude')), 'Subtract', self)
		self.action_select_mode_replace.setShortcut("Ctrl+Shift+=")
		self.action_select_mode_and.setShortcut("Ctrl+Shift+&")
		self.action_select_mode_or.setShortcut("Ctrl+Shift+|")
		self.action_select_mode_xor.setShortcut("Ctrl+Shift+^")
		self.action_select_mode_subtract.setShortcut("Ctrl+Shift+-")
		self.menu_mode.addAction(self.action_select_mode_replace)
		self.menu_mode.addAction(self.action_select_mode_and)
		self.menu_mode.addAction(self.action_select_mode_or)
		self.menu_mode.addAction(self.action_select_mode_xor)
		self.menu_mode.addAction(self.action_select_mode_subtract)

		self.action_samp_send_table_select_row_list = QtGui.QAction(QtGui.QIcon(iconfile('block--arrow')), 'Broadcast selection over SAMP', self)
		self.action_samp_send_table_select_row_list.setShortcut('Ctrl+Shift+B')
		#self.toolbar.addAction(self.action_samp_sand_table_select_row_list)