- From: H&kon W Lie <howcome@w3.org>
- Date: Mon, 15 May 1995 00:52:34 --100
- To: wmperry@spry.com
- Cc: www-style@w3.org
Bill,
> Do you have a handy conversion chart for the various 'spatial'
> coordinates that we use in the style sheet proposal?
1 in = 25.4 mm = 72 pt = 6 pa
The naming of these will become an issue -- the less significant the
more discussions..
I enclose some code to do the pt to px conversion (which is the only
one I support so far). The source code of xdpyinfo.c has an
explanations of the issues.
double display_pt2px;
#ifdef X11
display_pt2px = (25.4 / 72.0) *
(((double) DisplayWidth(display,screen)) / ((double) DisplayWidthMM(display, screen)));
#endif
int pt2px(double pt)
{
return (int) ((display_pt2px * pt) + 0.5);
}
-h&kon
Hakon W Lie, WWW project CERN, CH-1211 Geneva 23
http://www.w3.org/hypertext/WWW/People/howcome/
Received on Monday, 23 January 2023 01:05:08 UTC