Greetings,
I have recently begun adding printing support to one of my applications. The
last time I did any print related programming on the Mac was during the System
7 days (ack!) so I am blissfully ignorant on all of this. For the most part,
though, almost everything seems to be working.
One thing that has me discombobulated is that NSPrintInfo's top and bottom
margins seem to be swapped. If I call [printinfo setBottomMargin:foo], it
adjusts the spacing at the top of the page, both in the preview and on the
printed page. Likewise, calling setTopMargin adjusts the spacing at the bottom
of the page.
FWIW, I modified the TextEdit sample code, too...
(Document.m)
- (NSPrintInfo *)printInfo {
NSPrintInfo *printInfo = [super printInfo];
if (!setUpPrintInfoDefaults) {
// snip
[printInfo setTopMargin:72.0];
// [printInfo setBottomMargin:72.0];
[printInfo setBottomMargin:0.0];
}
return printInfo;
}
...and that changed the spacing at the top of the page as well. Hmm.
I thought that perhaps it had something to do with coordinate systems being
swapped and I should be swapping the calculated values I use for
setBottomMargin/setTopMargin. But when I tested my program on a 10.6 system,
setBottomMargin/setTopMargin work as I would expect, i.e., not swapped. Did
something change with the printing architecture between Snow Leopard and Lion
regarding print margins (or coordinate systems)? I checked the release notes,
but didn't find anything. Or is there something obvious that I've missed?
Thanks in advance,
-cb
--
Carl W. Bell - <http://carl-bell.baylor.edu/carl_bell/>
Senior Analyst/Programmer - Academic and Research Computing Services
Baylor University Electronic Library
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