- From: Philipp Hoschka <Philipp.Hoschka@sophia.inria.fr>
- Date: Thu, 08 Oct 1998 22:14:06 +0200
- To: Joseph Brick <josephb@real.com>
- cc: www-smil@w3.org
On 08/10/1998, Joseph Brick <josephb@real.com> wrote: >>> Can a SMIL presentation include other SMIL presentation? >> >>Nothing in the SMIL spec prevents this > >True that nothing in the SMIL spec prevents this, but we can't pretend that >there aren't special issues with a SMIL media source that don't exist with, >say, a video media source. Off the top of my head: > >* SMIL files contain a layout element. If I have two SMIL sources within >the same <par>, each defining completely different layout, what should >happen? These SMIL sources will define their own layout, which is independent of the SMIL file that includes them - they're completely independent media objects, and should be treated as this Including a SMIL file is just like including a Quicktime file with multiple overlaid tracks in this respect, or a realtext file - both of them define their own layout for the screen space they take up Example: <layout> <region id="a" top="5" left="5" /> <region id="b" top="10" left="10" /> </layout> .. <par> <ref src="a.smil" region="a" /> <ref src="b.smil" region="b" /> </ref> ... a.smil ------ <layout> <root-layout height="50" width="50" /> <region id="aa" top="2" left="3" /> <region id="ab" top="1" left="10" /> </layout> .. <par> <ref src="a.rt" region="aa" /> <ref src="b.rm" region="ab" /> </ref> ... b.smil ------ <layout> <root-layout height="50" width="150" /> <region id="ab" top="7" left="3" /> <region id="bb" top="15" left="20" /> </layout> .. <par> <ref src="a.rp" region="ab" /> <ref src="b.rm" region="bb" /> </ref> ... >* Can a <ref> in a nested SMIL file refer to a region defined by its parent >file? no, for the same reason as stated above - don't get confused that this is SMIL in SMIL, it's not really different than anything else in SMIL (from what i see, at least)
Received on Thursday, 8 October 1998 16:14:15 UTC