On Nov 13, 2009, at 1:27 AM, Mirko Viviani wrote: > To be honest I didn't remember the resolution indipendent thing, but I was > supposing something similar > since drawing my image in tiles on this context resulted with gaps ! > But I was not able to obtain the scale factor of the printing context so I > didn't understand.
Technically you are not drawing to the printer, but rather a specialized PDF context. Getting the current DPI of the printer isn't always possible, and it is easy for the user to invalidate that information (printing to PDF or moving a print job between printers) so it isn't recommended. > CGContextConvertSizeToDeviceSpace() does not seem to correctly convert my > paperSize > (from NSPrintInfo) to device space. (see below) > I need this information because I want to scale an image (ie 500 Mpx) to a > reasonable size instead of > crashing my app! :) > > I haven't checked the context transform matrix yet, but which route should I > follow to obtain this information? It is doing exactly what it should do given the reality as explained above. I would choose a reasonable scaling factor for your image and use that to resize it before drawing it to the print context. -- David Duncan Apple DTS Animation and Printing _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
