2008-08-14  Martin Nordholts  <martinn@svn.gnome.org>

	* app/display/gimpdisplayshell-draw.[ch]
	(gimp_display_shell_draw_get_scaled_image_size_for_scale): New
	function.

	* app/display/gimpdisplayshell-scale.[ch]
	(gimp_display_shell_scale): When zooming out and the image
	starts to fit the viewport on a given axis, center on that
	axis.

	(gimp_display_shell_scale_image_starts_to_fit): New function.

	(gimp_display_shell_calculate_scale_x_and_y): New function.

	* app/display/gimpdisplayshell.c
	(gimp_display_shell_scale_changed): Use
	gimp_display_shell_calculate_scale_x_and_y().

	* app/display/gimpdisplayshell-scroll.c
	(gimp_display_shell_scroll_center_image): Bail out if neither
	vertical nor horizontal centering is requested.

svn path=/trunk/; revision=26562