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I am trying to add a Gtk stock icon to my window. Here is the code:

#! /usr/bin/python

from gi.repository import Gtk

class MyWindow(Gtk.Window):

    def __init__(self):
        Gtk.Window.__init__(self, title='My Window Title')

        self.icon = self.render_icon(Gtk.STOCK_FLOPPY, 1)
        self.set_icon(self.icon)

        self.connect('delete-event', Gtk.main_quit)

win = MyWindow()
win.show_all()
Gtk.main()

According to this page icon size should be one of Gtk icon size constants but Eclipse code completion doesn't show any of the listed values and if I manually enter one of them I get

AttributeError: 'gi.repository.Gtk' object has no attribute 'ICON_SIZE_SMALL_TOOLBAR'

If I set the icon size to the literal 1 the script works. I'm sure this has to do something with Gtk or PyGtk versions, but I can't figure what I am doing wrong. Thanks in advance and sorry for the novice question.

8

The problem is that you are looking at the PyGTK documentation, but are using PyGI/GTK3 in your script.

The docs on gtk_widget_render_icon() says the following:

gtk_widget_render_icon has been deprecated since version 3.0 and should not be used in newly-written code. Use gtk_widget_render_icon_pixbuf() instead.

Then the docs on gtk_widget_render_icon_pixbuf() says this:

gtk_widget_render_icon_pixbuf has been deprecated since version 3.10 and should not be used in newly-written code. Use gtk_icon_theme_load_icon() instead.

Great huh?! So let's move on.

gtk_icon_theme_load_icon() takes the following arguments:

  • icon_name : the name of the icon to lookup
  • size : the desired icon size. The resulting icon may not be exactly this size
  • flags : flags modifying the behavior of the icon lookup

Knowing this, you can change your old render_icon line with the following:

        icontheme = Gtk.IconTheme.get_default()
        self.icon = icontheme.load_icon(Gtk.STOCK_FLOPPY, 128, 0)

Which will lookup a 128x128 px image. You might want to change the flags if needed, the enum is documented here. This can be translated into Python like this:

GTK_ICON_LOOKUP_NO_SVG -> Gtk.IconLookupFlags.NO_SVG
GTK_ICON_LOOKUP_FORCE_SVG -> Gtk.IconLookupFlags.FORCE_SVG
GTK_ICON_LOOKUP_USE_BUILTIN -> Gtk.IconLookupFlags.USE_BUILTIN
# And so on...
0

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