[Xastir] Font and Station Text style

[Tom Russo]

I had to make one small change (adding a declaration of "long get_text_width"
to draw_symbols.h) to get it to compile with the default compiler on my
system (clang), but otherwise it looks good.  I committed the change I had
to make, since it is correct for all systems.

(the function was defined as returning long *after* it had been used in the
file without being declared --- so the compiler was implicitly declaring it
as returning an "int", then puking when it hit the function definition)

On Sun, Apr 10, 2016 at 08:11:36PM -0700, we recorded a bogon-computron collision of the <n7ipb at wetnet.net> flavor, containing:
> On Friday, April 8, 2016 8:00:05 PM PDT Ken Koster wrote:
> > Checked in to CVS is an update to draw_symbol.c with the following:
> > 
> > For Station Text Styles the grey and black backgrounds now scale with
> > changes in font size. The positions of text around the station symbol now
> > also take into account the font size. Still no support for proportional
> > fonts so you're best off using one of the fixed or mono fonts. Tested up to
> > the ludicrous size of 100pt
> > 
> > I've been casting the xastir main screen to the chromecast on my big screen.
> > The small fonts just wouldn't hack it and the big fonts overlapped and
> > looked ugly.
> > 
> > So I fixed it.
> 
> Re-worked to handle proportional fonts and scale with font size changes.  To bad we don't 
> scale the symbol but I'm not about to open that can of worms.
> 
> Tested with a view from Alaska to Cuba and over six thousand visible stations.  All text 
> elements turned on, and no easily observable memory issues.  Yes it took about four seconds 
> to redraw when you switch Station Styles but displaying that many is a bit impractical.
> 
> Those feeling adventurous have at it.
> -- 
> Ken - N7IPB
> Email: n7ipb at wetnet.net
> JID: n7ipb at jabber.wetnet.net
> PGP Sig: F42B EF90 3CD3 31C7 3056  122E 993A 7B2E 5138 C42A 
> "I have now exceeded my BFS (Budget For Stupid) for the month" - Me to  WE7U
> 



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-- 
Tom Russo    KM5VY   SAR502   DM64ux          http://www.swcp.com/~russo/
Tijeras, NM  QRPL#1592 K2#398  SOC#236        http://kevan.org/brain.cgi?DDTNM
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