Re: NSPrintInfo change notification?

FROM : John Terranova
DATE : Mon Oct 04 20:27:30 2004

On Oct 4, 2004, at 10:24 AM, George Lawrence Storm wrote:

> Is there a NSPrintInfo change notification I can register for so I can
> know when the user has changed the Page Setup?
> (I need to refresh my view size and printable area marks.)


Not that I know of.

> Otherwise is there particular method I should override in my document
> (or window) so I can create my own notification?


In NSDocument:

- (void)setPrintInfo:(NSPrintInfo *)printInfo

This is from my subclass of NSDocument:

- (void)setPrintInfo:(NSPrintInfo *)printInfo
{
   [super setPrintInfo:printInfo];

   // now call [self imageablePageBounds]
   //  or post a notification, or whatever.

   // I essentially do this and let bindings take care of the rest:
   YABIDataManager *dataMan = [self dataManager];
   [dataMan setPaperSize:[self paperSize]];
   [dataMan setImageablePageBounds:[self imageablePageBounds]];
}

Possibly a better way to do this would be something like:

- (void)setPrintInfo:(NSPrintInfo *)printInfo
{
   [self willChangeValueForKey:@"printInfo"];
   [super setPrintInfo:printInfo];
   [self didChangeValueForKey:@"printInfo"];

   // let bindings propagate any changes
}
--
   john terranova, <email_removed>

"You never know what you'll do
  until you do what you do
  when you're broke."    -- Todd Snider, "Broke"