2007-01-12  Emmanuel Pacaud <emmanuel.pacaud@lapp.in2p3.fr>

	Add support for porterduff comp-op operators and for enable-background.

	* rsvg-cairo-draw.c (_rsvg_cairo_set_operator): new.
	(rsvg_cairo_render_path): request a temporary buffer when operator is
	not src-over.
	(rsvg_cairo_render_image): set composite operator before painting.
	(rsvg_cairo_push_render_stack): don't exit for operator != src-over
	or enable-background != accumulate.
	(rsvg_cairo_pop_render_stack): ditto. Set composite operator.
	* rsvg-styles.c (rsvg_state_init): added comp_op and
	enable_background.
	(rsvg_state_inherit_run): force inherit for comp_op and
	enable_background.
	(rsvg_parse_style_arg): parse for comp_op and enable_background.
	
	* rsvg-structure.c (rsvg_node_symbol_set_atts): move
	rsvg_parse_style_attrs inside the conditionnal block.


svn path=/trunk/; revision=1087