Re: Touchscreens and control scaling
Re: Touchscreens and control scaling
- Subject: Re: Touchscreens and control scaling
- From: Ben <email@hidden>
- Date: Fri, 5 Jun 2009 13:36:30 +0100
On 4 Jun 2009, at 18:01, Michael Ash wrote:
On Thu, Jun 4, 2009 at 3:44 AM, Ben <email@hidden>
wrote:
Hi list,
I've been sketching out an application and could do with a little
advice on
which cocoa-direction to take. It's a full-screen (kiosk) type app,
running
in a very controlled environment (not for wide release) but which
would run
on an external touchscreen monitor.
While I can make buttons and labels big enough for fingers to poke,
I'm
concerned about controls like table headers and scrollers being
large enough
to make finger-size targets. I'm asking sooner rather than after
testing the
usability in case there are special considerations I should take
before
writing the first lines of code.
The only options I can think of are:
1. Make a normal app and use quartz debug to scale *everything* up
2. Subclass and/or redraw any controls too small for finger taps
3. Shut up and try it out first
There is also option 3: set the scaling of your window's content view
(or some other convenient superview) to scale everything it contains
up.
This is capability has been around forever and so is probably better
supported than the quartz debug option.
Mike
Thanks for the advice everyone. I will probably roll my own UI, but
the option of scaling a particular view is something I will
investigate first as I had not know that it was possible. Searching
for 'NSView scaling' turns up a number of documents and a couple of
Apple tech notes in case anyone wants to do this in the future.
Ben
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