On 19/02/2010, at 6:06 AM, Michael de Haan wrote:
> Hi all,
> May I ask about an issue I am having adding page numbers to a print out.
> I implemented the following method:
>
>
> - (void)drawPageBorderWithSize:(NSSize)borderSize
> {
> // NSPrintOperation *po = [NSPrintOperation currentOperation];
> //NSPrintInfo *pi = [po printInfo];
>
> NSRect currentFrame = [self frame];
> NSRect newFrame= NSMakeRect(0, 0, borderSize.width, borderSize.height);
> [self setFrame:newFrame];
>
> NSFont *f = [attributes objectForKey:NSFontAttributeName];
> float capHeigth = [ f capHeight];
> NSString *string = [ NSString stringWithFormat:@"Page %d", currentPage +
> 1];
> float stringX = (borderSize.width - (float)[string length])/2.0;
> [self lockFocus];
> [string drawAtPoint:NSMakePoint(stringX, borderSize.height - (1.7 *
> capHeigth))
> withAttributes:attributes];
> [self unlockFocus];
> [self setFrame:currentFrame];
> }
>
>
> A while ago, there were questions to the list about printInfo "margin" calls.
> At that time, it appears the consensus was that these calls are buggy. I
> think they still are, as my code showed that the margins returned bore no
> relationship to the margins set in page Setup. As a workaround, I used the
> above approach. What do others do to deduce the user's margin settings....or
> it's possible that I am missing something else.
Hi Michael,
I'm not sure that they're buggy, it's just they don't return what you think
they do, or what their name appears to imply. I added the following to
NSPrintInfo as a category so I can get the actual paper margins set in Page
Setup, it might come in handy for you too.
enum
{
PrintInfoTopMarginIndex = 0,
PrintInfoLeftMarginIndex = 1,
PrintInfoBottomMarginIndex = 2,
PrintInfoRightMarginIndex = 3
};
@implementation NSPrintInfo (PaperMargins)
- (NSArray*) paperMargins
{
PMPageFormat format = (PMPageFormat)[self PMPageFormat];
PMPaper paper;
OSStatus err = PMGetPageFormatPaper( format, &paper );
if( err == noErr )
{
PMPaperMargins margins;
err = PMPaperGetMargins( paper, &margins );
if( err == noErr )
{
NSMutableArray* array = [NSMutableArray array];
[array addObject:[NSNumber
numberWithDouble:margins.top]];
[array addObject:[NSNumber
numberWithDouble:margins.left]];
[array addObject:[NSNumber
numberWithDouble:margins.bottom]];
[array addObject:[NSNumber
numberWithDouble:margins.right]];
return array;
}
}
return nil;
}
- (double) topPaperMargin
{
return [[[self paperMargins] objectAtIndex:PrintInfoTopMarginIndex]
doubleValue];
}
- (double) leftPaperMargin
{
return [[[self paperMargins] objectAtIndex:PrintInfoLeftMarginIndex]
doubleValue];
}
- (double) bottomPaperMargin
{
return [[[self paperMargins] objectAtIndex:PrintInfoBottomMarginIndex]
doubleValue];
}
- (double) rightPaperMargin
{
return [[[self paperMargins] objectAtIndex:PrintInfoRightMarginIndex]
doubleValue];
}
@end
--Graham
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