2007-06-26  Vincent Untz  <vuntz@gnome.org>

	Improve handling of size hints from applets. This is needed to have
	the latest tasklist (libwnck 2.19.5) to correctly work.
	For non-expanded panels, this means we have to "forward" the size
	hints from all applets using it from PanelWidget to PanelToplevel.
	This is a non-trivial change because it might break panel
	sizing and positioning...

	* panel-toplevel.c: (panel_toplevel_update_size_from_hints): new, when
	there are size hints, try to share all the remaining space on the
	screen that is not needed by applets not using size hints between
	applets using size hints. This breaks a bit the separation between
	PanelWidget and PanelToplevel, but I can't think of any other way to
	do this.
	(panel_toplevel_update_size): use
	panel_toplevel_update_size_from_hints(), and make it nicely work for
	drawers
	* panel-widget.[ch]: (panel_widget_size_request): don't take into
	account for the size request applets using size hints. Instead, keep a
	list of those applets, to be used later.
	(panel_widget_count_expanded_applets): kill
	(panel_widget_size_allocate):
	 - for packed panels: the toplevel will have decided which size to use
	   for applets using size hints. We don't need the "compression" part
	   anymore. Of course, we can have an overflow, but we didn't handle
	   this before anyway, so...
	 - for expanded panels: the cell and the minimum cell should be the
	   minimum size in the size hints for applets using size hints: using
	   the requested size is wrong since the requested size generally is
	   "the best size" for the applet, which is not the smaller size the
	   applet can handle. Also fix minor bugs where the minimum cell for
	   applets using size hints is just too big for the panel.
	(panel_widget_finalize): clean new fields
	(panel_widget_init): init new fields
	(panel_widget_set_applet_size_hints): check that the size hints are
	valid before accepting them
	* panel-applet-frame.c:
	(panel_applet_frame_set_size_hints_from_any): simplify a bit

svn path=/trunk/; revision=10480