Date: Sat, 7 Nov 1998 15:29:28 +0000 From: Nik Clayton <nik@nothing-going-on.demon.co.uk> To: hackers@FreeBSD.ORG Subject: text mode screen grabber? Message-ID: <19981107152928.28834@nothing-going-on.org>
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Has anyone got (or have pointers to useful code) a screen grabber for
syscons? Ideally (and given an 80x25 screen) I'm looking for something
that would write a 4000 byte file of { character code, colour } tuples.
I want to do this so I can put screenshots in the Handbook. I think I
can
1. Take a dump of a screen from sysinstall (i.e., run sysinstall on
VT1, run the screen dump program on VT2)
2. Read this dump and produce an HTML table 'screenshot' (see
<URL:http://www.freebsd.org/~rpratt/>)
3. Read this dump and produce a GIF file.
This way I get screenshots suitable for people with and without graphic
browsers/printers, and the process is relatively easy to automate.
If I was doing this in DOS, I'd just set a pointer to 0xb80000000 and
write the next 4000 bytes. I figure I can do this (as a root process) by
opening /dev/kmem. But virtual terminals will presumably screw this up.
I've had a look at the syscons code, and some of the screen savers, but
nothing's leaping out at me saying "Here, this is where the screen
buffer is. . .".
N
--
C.R.F. Consulting -- we're run to make me richer. . .
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