[Bug 32090] Smokey-blue disabled scrollbars trigger gdk assertion

[norjaidi]

Public bug reported:
https://launchpad.net/malone/bugs/32090

Affects: gnome-themes (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
Distribution: Breezy on 386

The following bug appears with smokey-blue controls. The bug seems
harmless to the application user, but clutters the terminal with
messages.

If a GtkScrolledWindow is disabled (sensitive=false)
then the following assertion messages appear on the terminal:

1. upon drawing the vertical scroll thumb:

(...): GdkPixbuf-CRITICAL **: gdk_pixbuf_new_from_data: assertion
`height > 0' failed

(...): GdkPixbuf-CRITICAL **: gdk_pixbuf_scale: assertion `src != NULL'
failed

(...): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT
(object)' failed


2. upon drawing the horizontal scroll thumb:
(...): GdkPixbuf-CRITICAL **: gdk_pixbuf_new_from_data: assertion `width > 0' failed

(...): GdkPixbuf-CRITICAL **: gdk_pixbuf_scale: assertion `src != NULL'
failed

(...): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT
(object)' failed


... and the disabled scrollbar thumbs are not fully drawn.