More Info. If I do this:
- (void) setPrintInfo:(NSPrintInfo*) printInfo
{
[super setPrintInfo:printInfo];
PMPageFormat pmf = (PMPageFormat)[printInfo PMPageFormat];
PMPaper paper;
OSStatus err = PMGetPageFormatPaper( pmf, &paper );
if( err == noErr )
{
PMPaperMargins margins;
err = PMPaperGetMargins( paper, &margins );
NSLog(@"paper margins = {%f, %f} - {%f, %f}", margins.top,
margins.left, margins.bottom, margins.right );
}
}
I get the expected values logged. This suggests to me that the -
xxxMargin methods of NSPrintInfo are in fact, broken. If that's the
case I'll gladly report it, but I'd like to hear from anybody who
knows this stuff if my expectations are correct here.
--Graham
On 09/07/2009, at 2:48 PM, Graham Cox wrote:
I'm trying to get information about printing margins so my app can
show where the edges of the paper are correctly as well as the
content area.
I thought that's what NSPrintInfo methods such as -topMargin gave me
- the margins set by the Page Setup... dialog. But they never change
no matter what I do in the Page Setup dialog. The value of
NSPaperSize is also the same. I read the Printing Guide but it
doesn't mention margins at all.
Here are two examples, logged from the -setPrintInfo: method of
NSDocument. The first paper is a custom size based on A4 with
margins set to 0, the second set to 3 cm. As can be seen, apart from
the paper name, the info is identical.
2009-07-09 14:31:45.310 Ortelius[16094:10b] set print info: {
NSBottomMargin = 90;
NSCopies = 1;
NSDetailedErrorReporting = 0;
NSFaxNumber = "";
NSFirstPage = 1;
NSHorizonalPagination = 2;
NSHorizontallyCentered = 1;
NSJobDisposition = NSPrintSpoolJob;
NSLastPage = 2147483647;
NSLeftMargin = 72;
NSMustCollate = 1;
NSOrientation = 0;
NSPagesAcross = 1;
NSPagesDown = 1;
NSPaperName = "A4 Minimal Margins 1";
NSPaperSize = NSSize: {651.969, 935.433};
NSPrintAllPages = 1;
NSPrintProtected = 0;
NSPrintTime = 0001-01-01 10:00:00 +1000;
NSPrinter = {
"Device Description" = {
NSDeviceIsPrinter = YES;
};
"Language Level" = 3;
Name = "Canon i550";
Type = "Canon i550";
};
NSPrinterName = "Canon i550";
NSRightMargin = 72;
NSSavePath = "";
NSScalingFactor = 1;
NSTopMargin = 90;
NSVerticalPagination = 0;
NSVerticallyCentered = 1;
}
2009-07-09 14:32:01.407 Ortelius[16094:10b] set print info: {
NSBottomMargin = 90;
NSCopies = 1;
NSDetailedErrorReporting = 0;
NSFaxNumber = "";
NSFirstPage = 1;
NSHorizonalPagination = 2;
NSHorizontallyCentered = 1;
NSJobDisposition = NSPrintSpoolJob;
NSLastPage = 2147483647;
NSLeftMargin = 72;
NSMustCollate = 1;
NSOrientation = 0;
NSPagesAcross = 1;
NSPagesDown = 1;
NSPaperName = "A4 Big Margins";
NSPaperSize = NSSize: {651.969, 935.433};
NSPrintAllPages = 1;
NSPrintProtected = 0;
NSPrintTime = 0001-01-01 10:00:00 +1000;
NSPrinter = {
"Device Description" = {
NSDeviceIsPrinter = YES;
};
"Language Level" = 3;
Name = "Canon i550";
Type = "Canon i550";
};
NSPrinterName = "Canon i550";
NSRightMargin = 72;
NSSavePath = "";
NSScalingFactor = 1;
NSTopMargin = 90;
NSVerticalPagination = 0;
NSVerticallyCentered = 1;
}
So how can I get the information I need - the size of each margin?
And if that's not what -topMargin et. al. are for, what *are* they
for?
--Graham
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