Re: Inlined image format

Jonathan Abbey (
Wed, 26 Jan 1994 13:21:35 -0600

> Date: Wed, 26 Jan 94 12:33:00 PST
> From: Fisher Mark <uunet!tcemail!!>
> Subject: Re: Inlined image format
> To: www-talk <>
> Message-Id: <2D46D4C3@MSMAIL.INDY.TCE.COM>
> I hate to be MS Windows-centric (although OLE 2.0 is going to be on NT & the
> Mac), but it looks to me like the OLE 2.0 inlined image capability would
> certainly help with this. As far as I understand it (which may not be far
> enough :( ), under OLE 2.0 a browser that did not know how to process an
> image format could essentially "loan" a child window to an external viewer
> for display of the image, thus producing what looks to the user like the
> current inlined image display but is actually an image displayed by an
> external viewer. Does anyone know if the OpenDoc specification allows for
> this?

I have read that OpenDoc is a functional superset of OLE 2.0, so I
believe the answer here is yes.

The X window system's basic architecture is itself very well suited for
the loaning of child windows to other applications. The problem is that
heretofore there has not been a defined protocol for such sharing. I believe
that X11R6 (with the Fresco C++ OO toolkit) will provide some explicit
support for this kind of mechanism.

The external-viewer-in-a-browser-window stuff, while conceptually wonderful,
doesn't strike me as so terribly important. I think that image filters
can do the job just as well (Mosaic or whatever calls a filter with the
data and gets back a GIF file, for instance). The important thing is to
have some kind of standard way to represent any kind of linear transformations
that such a filter might induce, so that polygonal regions defined as buttons
in the image will be properly mapped to the resulting GIF image.

Of course, if we went to a system where we could have active objects such
as PostScript programs embedded in HTML documents, then we would need to
talk about such an embedding system.

> ======================================================================
> Mark Fisher Thomson Consumer Electronics
> Indianapolis, IN

Jonathan Abbey
Applied Research Laboratories The University of Texas at Austin