Ett verktygsfält med en inforuta (med en bild) för en knapp.
Detta exempel bygger på Toolbar-exemplet.
from gi.repository import Gtk
from gi.repository import Gdk
from gi.repository import Gio
import sys
class MyWindow(Gtk.ApplicationWindow):
def __init__(self, app):
Gtk.Window.__init__(
self, title="Toolbar with Tooltips Example", application=app)
self.set_default_size(400, 200)
grid = Gtk.Grid()
toolbar = self.create_toolbar()
toolbar.set_hexpand(True)
toolbar.show()
grid.attach(toolbar, 0, 0, 1, 1)
self.add(grid)
undo_action = Gio.SimpleAction.new("undo", None)
undo_action.connect("activate", self.undo_callback)
self.add_action(undo_action)
fullscreen_action = Gio.SimpleAction.new("fullscreen", None)
fullscreen_action.connect("activate", self.fullscreen_callback)
self.add_action(fullscreen_action)
def create_toolbar(self):
toolbar = Gtk.Toolbar()
toolbar.get_style_context().add_class(Gtk.STYLE_CLASS_PRIMARY_TOOLBAR)
# button for the "new" action
new_button = Gtk.ToolButton.new_from_stock(Gtk.STOCK_NEW)
# with a tooltip with a given text
new_button.set_tooltip_text("Create a new file")
new_button.set_is_important(True)
toolbar.insert(new_button, 0)
new_button.show()
new_button.set_action_name("app.new")
# button for the "open" action
open_button = Gtk.ToolButton.new_from_stock(Gtk.STOCK_OPEN)
# with a tooltip with a given text in the Pango markup language
open_button.set_tooltip_markup("Open an <i>existing</i> file")
open_button.set_is_important(True)
toolbar.insert(open_button, 1)
open_button.show()
open_button.set_action_name("app.open")
# button for the "undo" action
undo_button = Gtk.ToolButton.new_from_stock(Gtk.STOCK_UNDO)
# with a tooltip with an image
# set True the property "has-tooltip"
undo_button.set_property("has-tooltip", True)
# connect to the callback function that for the tooltip
# with the signal "query-tooltip"
undo_button.connect("query-tooltip", self.undo_tooltip_callback)
undo_button.set_is_important(True)
toolbar.insert(undo_button, 2)
undo_button.show()
undo_button.set_action_name("win.undo")
# button for the "fullscreen/leave fullscreen" action
self.fullscreen_button = Gtk.ToolButton.new_from_stock(
Gtk.STOCK_FULLSCREEN)
self.fullscreen_button.set_is_important(True)
toolbar.insert(self.fullscreen_button, 3)
self.fullscreen_button.set_action_name("win.fullscreen")
return toolbar
# the callback function for the tooltip of the "undo" button
def undo_tooltip_callback(self, widget, x, y, keyboard_mode, tooltip):
# set the text for the tooltip
tooltip.set_text("Undo your last action")
# set an icon for the tooltip
tooltip.set_icon_from_stock("gtk-undo", Gtk.IconSize.MENU)
# show the tooltip
return True
def undo_callback(self, action, parameter):
print("You clicked \"Undo\".")
def fullscreen_callback(self, action, parameter):
is_fullscreen = self.get_window().get_state(
) & Gdk.WindowState.FULLSCREEN != 0
if not is_fullscreen:
self.fullscreen_button.set_stock_id(Gtk.STOCK_LEAVE_FULLSCREEN)
self.fullscreen()
else:
self.fullscreen_button.set_stock_id(Gtk.STOCK_FULLSCREEN)
self.unfullscreen()
class MyApplication(Gtk.Application):
def __init__(self):
Gtk.Application.__init__(self)
def do_activate(self):
win = MyWindow(self)
win.show_all()
def do_startup(self):
Gtk.Application.do_startup(self)
new_action = Gio.SimpleAction.new("new", None)
new_action.connect("activate", self.new_callback)
app.add_action(new_action)
open_action = Gio.SimpleAction.new("open", None)
open_action.connect("activate", self.open_callback)
app.add_action(open_action)
def new_callback(self, action, parameter):
print("You clicked \"New\".")
def open_callback(self, action, parameter):
print("You clicked \"Open\".")
app = MyApplication()
exit_status = app.run(sys.argv)
sys.exit(exit_status)
set_tooltip_text(text) och set_tooltip_markup(text) kan användas för att lägga till en inforuta med vanlig text (eller text i märkspråket Pango) till en komponent.
För mer komplexa inforutor, exempelvis för en inforuta med en bild:
Ställ in egenskapen "has-tooltip" för komponenten till True; detta kommer få GTK+ att övervaka komponenten efter rörelse och relaterade händelser som behövs för att avgöra när och var en inforuta ska visas.
Connect to the "query-tooltip" signal. This signal will be emitted when a tooltip is supposed to be shown. One of the arguments passed to the signal handler is a GtkTooltip object. This is the object that we are about to display as a tooltip, and can be manipulated in your callback using functions like set_icon(). There are functions for setting the tooltip's markup (set_markup(text)), setting an image from a stock icon (set_icon_from_stock(stock_id, size)), or even putting in a custom widget (set_custom(widget)).
Returnera True från din query-tooltip-hanterare. Detta får inforutan att visas. Om du returnerar False kommer den inte att visas.
In the probably rare case where you want to have even more control over the tooltip that is about to be shown, you can set your own GtkWindow which will be used as tooltip window. This works as follows:
Ställ in "has-tooltip" och anslut till "query-tooltip" som tidigare.
Använd set_tooltip_window() på komponenten för att ställa in ett GtkWindow skapat av dig som inforutefönster.
In the "query-tooltip" callback you can access your window using get_tooltip_window() and manipulate as you wish. The semantics of the return value are exactly as before, return True to show the window, False to not show it.
I detta exempel använde vi följande:
GtkTooltip
GtkToolbar
GtkWidget
Standardobjekt