Mac OS X: Print directly from file/URL?

问题

I want to code a litte utility that can print a page from a an URL, the URL would deliver a standard file (like a pdf or a jpg picture) and I just want to print this from within my cocoa app without showing any dialog, is that possible? I can't find anything about this in the docs except for a thing telling me to build a view with the file and then print this view but is this really necessary?

Any help appreciated.

Thanks, Philip

回答1:

You don't need to show the NSView in order to print.
Just create the NSView programmatically and pass it to the NSPrintOperation.

Example code:

// Get Print Info
NSPrintInfo *printInfo = [NSPrintInfo sharedPrintInfo];

// Printing Text
NSRect textRect = NSMakeRect(0,0,100,50);
NSTextView *theTextView = [[NSTextView alloc] initWithFrame:textRect];
[theTextView setString: @"Hello World"];
NSPrintOperation *textPrint = [NSPrintOperation printOperationWithView:theTextView printInfo:printInfo];
[textPrint setCanSpawnSeparateThread:YES];
[textPrint runOperation];

// Printing Picture
NSImage *pic =  [[NSImage alloc] initWithContentsOfFile: @"/Users/Anne/Desktop/Sample.png"];
NSRect picRect = NSRectFromCGRect(CGRectMake(0, 0, pic.size.width, pic.size.height));
NSImageView *imageView = [[NSImageView alloc] initWithFrame:picRect];
[imageView setImage:pic];
NSPrintOperation * picPrint = [NSPrintOperation printOperationWithView:imageView printInfo:printInfo];
[picPrint setCanSpawnSeparateThread:YES];
[picPrint runOperation];

For PDF documents use PDFView (add the Quartz framework).

You might also consider using WebView (add the WebKit framework).
WebView supports many formats and makes formatting a breeze (HTML).

来源：https://stackoverflow.com/questions/11139386/mac-os-x-print-directly-from-file-url

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