2007-06-21  Michael Natterer  <mitch@gimp.org>

	Make sure the image preview is only invalidated for visible
	image changes (as it was before the change below).

	* app/core/gimpimage.h (struct GimpImageFlushAccumulator): added
	member "gboolean preview_invalidated".

	* app/core/gimpimage.c (gimp_image_update): set it to TRUE here.

	(gimp_image_real_flush): inavlidate the preview only if
	flush_accum.preview_invalidated is TRUE.


svn path=/trunk/; revision=22817