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Re: Several suggestions for image support
From: |
Kim F. Storm |
Subject: |
Re: Several suggestions for image support |
Date: |
16 Apr 2004 12:22:13 +0200 |
User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50 |
David Kastrup <address@hidden> writes:
> PNG images support transparency. Emacs can't make use of it. You can
> only have Emacs declare a particular color as transparent. This is
> dissatisfactory. It should tell the PNG decoding routines Emacs'
> background color for the purpose of transparency.
Using `:mask heuristic' should make the image background transparent.
The tool-bar code uses this.
I suppose you know that, so what's the problem with this approach?
>
> I would find it important if an image specifier could restrict the
> displayed portion of an image.
This might be useful for other reasons, e.g. image panning.
Zoom (scaling) would be useful too.
>
> The reason is that large images always appear as a single big
> character to Emacs. If I could split such an image into a bunch of
> smaller images, I could walk through it with the cursor. But it
> should only be necessary to instantiate the complete image itself once
> for this purpose. Of course, one should find a way that does not
> cause all of the subimages to be entered separately into the image
> cache.
Something like this is already on my to-do list.
However, I have other ideas to make image scrolling work, and it
is at the top of my to-do list.
--
Kim F. Storm <address@hidden> http://www.cua.dk
- Several suggestions for image support, David Kastrup, 2004/04/15
- Re: Several suggestions for image support,
Kim F. Storm <=
- Re: Several suggestions for image support, Jason Rumney, 2004/04/16
- Re: Several suggestions for image support, David Kastrup, 2004/04/16
- Re: Several suggestions for image support, Kim F. Storm, 2004/04/16
- Re: Several suggestions for image support, Jason Rumney, 2004/04/16
- Re: Several suggestions for image support, David Kastrup, 2004/04/16
- Re: Several suggestions for image support, Jason Rumney, 2004/04/16
- Re: Several suggestions for image support, David Kastrup, 2004/04/16
- Re: Several suggestions for image support, Kim F. Storm, 2004/04/16
- Re: Several suggestions for image support, Stefan Monnier, 2004/04/16
- Re: Several suggestions for image support, David Kastrup, 2004/04/16