Gtk Notebook tab size

I am using a gtkNotebook to show a number of widgets on the bottom of my app. The problem is that when the tabs are showing they take up a lot of space and look awkward in general. I figured out that it is cause by the gtk.ICON_SIZE_MENU being bigger that the text, but I can't find any constants that are smaller and I don't want to give it a exact pixel size since it may mess up on different screen resolutions. Is the any way to get the button to always scalse to the size of the 开发者_开发技巧text on the label next to it?

Here is the code that generates the button (the hbox it's in is the widget that the tab displays):

    box = gtk.HBox(False,0)
    btn = gtk.Button()
    image = gtk.Image()
    image.set_from_stock(gtk.STOCK_CLOSE, gtk.ICON_SIZE_MENU)
    btn.set_image(image)
    btn.set_relief(gtk.RELIEF_NONE)
    btn.show()

    if type(label) != type(gtk.Label()):
        label = gtk.Label('Untitled')
    box.pack_start(label)
    box.pack_end(btn)

If you just want to make the Close buttons smaller, have a look at how—for example—Epiphany removes most of the padding around the button.

• Define the button style (in PyGTK, gtk_rc_parse_string is gtk.rc_parse_string);
• Use it on all your Close buttons.

Result:

(This is a slightly older version of their code; Ephy trunk uses the GTK+ 3.0 CSS styling, but same idea.)

I guess what you could do is

1. supply a custom widget for your notebook tab labels via set_tab_label
2. use set_size_request to set label widget's size

See if an example below would work for you:

import gtk
import sys;

class TestNotebook(gtk.Notebook):
    def __init__(self):
        gtk.Notebook.__init__(self)

    def add_new_tab(self, icon):
        image = gtk.Image()
        image.set_from_stock(icon, gtk.ICON_SIZE_DIALOG)
        image.show_all()        

        tab_image = gtk.Image()
        tab_image.set_from_stock(icon, gtk.ICON_SIZE_MENU)

        box = gtk.HBox()
        box.pack_start(tab_image, False, False)
        box.pack_start(gtk.Label(icon), True, True)
        # set tab size here
        box.set_size_request(50, 50)        
        box.show_all()

        self.set_current_page(self.append_page(image))
        self.set_tab_label(image, box)

if __name__ == '__main__':
    notebook = TestNotebook()
    notebook.add_new_tab(gtk.STOCK_ABOUT)
    notebook.add_new_tab(gtk.STOCK_ADD)
    notebook.add_new_tab(gtk.STOCK_APPLY)

    box = gtk.VBox()
    box.pack_start(notebook)

    window = gtk.Window()
    window.resize(600, 400)
    window.add(box)
    window.show_all()

    gtk.main()
    sys.exit(0)

hope this helps, regards

More up to date answer of @erge_gubenko, when you're using a newer Python/Gtk version:

import gi
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk
import sys

class TestNotebook(Gtk.Notebook):
    def __init__(self):
        Gtk.Notebook.__init__(self)

    def add_new_tab(self, icon):
        image = Gtk.Image()
        image.set_from_icon_name(icon, Gtk.IconSize.DIALOG)
        image.show_all()        

        tab_image = Gtk.Image()
        tab_image.set_from_icon_name(icon, Gtk.IconSize.MENU)

        label = Gtk.Label(icon) # Deprecated
        box = Gtk.HBox()
        box.pack_start(tab_image, False, False, 2)
        box.pack_start(label, True, True, 2)
        # set tab size here
        box.set_size_request(50, 50)        
        box.show_all()

        self.set_current_page(self.append_page(image))
        self.set_tab_label(image, box)

if __name__ == '__main__':
    notebook = TestNotebook()
    notebook.add_new_tab(Gtk.STOCK_ABOUT)
    notebook.add_new_tab(Gtk.STOCK_ADD)
    notebook.add_new_tab(Gtk.STOCK_APPLY)

    box = Gtk.VBox()
    box.pack_start(notebook, True, True, 2)

    window = Gtk.Window()
    window.resize(600, 400)
    window.add(box)
    window.show_all()

    Gtk.main()
    sys.exit(0)