Re: A proposal for units in GTK+
- From: Calum Benson <calum benson sun com>
- To: Jonathan Blandford <jrb redhat com>
- Cc: gtk-devel-list gnome org
- Subject: Re: A proposal for units in GTK+
- Date: 04 Feb 2003 19:05:28 +0000
On Mon, 2003-02-03 at 07:53, Jonathan Blandford wrote:
> A nicer solution would be to be able to give sizes to widgets in units
> other than pixels. For example, being able to pack buttons one 'em'
> apart would be one nice solution.
Just for fun, I checked with our longer-serving UI bods to see if they
could remember how OpenLook did this :) Here's what they dug up:
From the OPEN LOOK Graphical User Interface Functional Specification...
page xxiv:
Under the neading of Device Independence, there is a paragraph that
says... "the OPEN LOOK UI is specified in terms of units that are
independent of any device. THe unit used in this specification is the
point -- the basic unit of typographical measurement -- equal to
approximately 1/72 of an inch (0.352 millimeters). Refer to Appendix B
for detailed specifications of each element."
Appendix B then has 80 pages of pictures of Pointers, Icons, Controls,
etc. using "points" as the unit of interest. There is a note that, in
most cases, the displays/CRTs used will have 72 pixels per inch making 1
pixel == 1 point.
Java also still specifies everything in pixels, so that's no help :)
Cheeri,
Calum.
--
CALUM BENSON, Usability Engineer Sun Microsystems Ireland
mailto:calum benson sun com GNOME Desktop Group
http://ie.sun.com +353 1 819 9771
Any opinions are personal and not necessarily those of Sun Microsystems
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