Cocoa PDFKit add text to PDF - objective-c

Question

I am trying to add text to t a PDFPage. Specifically, I want to add it to the header/footer of the pdf document. I have looked everywhere for an example of doing this but I can't find it. If someone can point to a tutorial or give a quick example of how I can add text to PDFPage it would be really helpful. Thanks.

Answer 1

You can do it using Quartz 2D - PDF Document Creation, Viewing, and Transforming. This code will help you to write into file:
[someString drawAtPoint:CGPointMake(100, 200) withFont:[NSFont systemFontOfSize:20.0f]];

Answer 2

The short answer is to subclass PDFPage and override the drawing methods. There's a description here.

Answer 3

The answers here are incomplete, after putting various pieces together, here is complete sample code (Objective-C):
// Need to create pdf Graphics context for Drawing text
CGContextRef pdfContextRef = NULL;
CFURLRef writeFileUrl = (CFURLRef)[NSURL fileURLWithPath:writeFilePath];
if(writeFileUrl != NULL){
pdfContextRef = CGPDFContextCreateWithURL(writeFileUrl, NULL, NULL);
}
// Start page in PDF context
CGPDFContextBeginPage(pdfContextRef, NULL);
NSGraphicsContext* pdfGraphicsContext = [NSGraphicsContext graphicsContextWithCGContext:pdfContextRef flipped:false];
[NSGraphicsContext saveGraphicsState];
// Need to set the current graphics context
[NSGraphicsContext setCurrentContext:pdfGraphicsContext];
NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:[NSFont fontWithName:#"Helvetica" size:26], NSFontAttributeName,[NSColor blackColor], NSForegroundColorAttributeName, nil];
NSAttributedString * currentText=[[NSAttributedString alloc] initWithString:#"Write Something" attributes: attributes];
// [currentText drawInRect: CGRectMake(0, 300, 500, 100 )];
[currentText drawAtPoint:NSMakePoint(100, 100)];
[NSGraphicsContext restoreGraphicsState];
// Close all the created pdf Contexts
CGPDFContextEndPage(pdfContextRef);
CGPDFContextClose(pdfContextRef);