nanogui: Contributed clock program to nano-X
Subject:
Re: Contributed clock program to nano-X
From:
Alistair Riddoch ####@####.####
Date:
6 Jul 1999 17:25:22 -0000
Message-Id: <199907061719.SAA17578@penelope.ecs.soton.ac.uk>
Greg Haerr writes:
>
> Al,
> I have added the clock program to MicroWindows v0.82, which
> I will release shortly.
>
> It's pretty cool! Anyway, I have a couple comments. I changed
> the color model to RGB a while back, so any function that takes a GR_COLOR,
> like GrSetGCForeground, must use an RGB color, or a color macro, like WHITE.
> Values like si.white are technically PIXELVALs, not COLORVALs, so they
> can't be passed from the upper level. The system converts COLORVALS to
> PIXELVALs based on the available palette. The file device.h has 16
> reserved colors that are guaranteed to be in a palette (see devpal4.c/devpal8.c)
> and can be used by name. These work by indexing the palette entry (see PALINDEX
> macro). So I changed all the si.white/si.black to WHITE and BLACK, and 8 to GRAY.
>
> The time is one hour off over here. Is that because you're not
> adding back the daylight savings time? Does gettimeofday() handle that?
>
I wasn't quite sure how this worked from reading the gettimeofday man page.
There are some references made in the manpage to the kernel
no longer using the tz structure, but when I included the second line
of the code fragment below, it worked fine in the UK. (we are currently in
daylight saving time) whereas previously it had been an hour slow.
gettimeofday(&tv, &tz);
now = tv.tv_sec - (60 * tz.tz_minuteswest);
If the line is not in the version I sent you then I sen the wrong one by
mistake. Please let me know whether this is the case.
Al
