PMPrinterPrintWithFile/APLAppDelegate.m

/*
     File: APLAppDelegate.m
 Abstract: Application delegate object that implements all the required printing functionality.
  Version: 2.0
 
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 */
 
#import "APLAppDelegate.h"
#import <ApplicationServices/ApplicationServices.h>
 
 
@interface APLAppDelegate ()
 
@property (strong) IBOutlet NSWindow *window;
 
@property (weak) IBOutlet NSMatrix *radioMatrix;
@property (nonatomic) NSPrintInfo *printInfo;
 
@end
 
 
@implementation APLAppDelegate
 
 
- (NSPrintInfo *)printInfo {
    
    if (_printInfo == nil) {
        _printInfo = [[NSPrintInfo alloc] init];
    }
    return _printInfo;
}
 
 
- (IBAction)print:(id)sender {
    
    
    NSPrintPanel *printPanel = [NSPrintPanel printPanel];
    /*
     Add the Show Paper Size option to default options for the print dialog.
     */
    NSPrintPanelOptions options = [printPanel options] | NSPrintPanelShowsPaperSize;
    [printPanel setOptions:options];
    
    [printPanel beginSheetWithPrintInfo:self.printInfo modalForWindow:self.window delegate:self didEndSelector:@selector(printPanelDidEnd:returnCode:contextInfo:) contextInfo:NULL];
}
 
 
- (void)printPanelDidEnd:(NSPrintPanel *)printPanel returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo {
    
    if (returnCode != NSOKButton) {
        return;
    }
    
    /*
     Set the file and corresponding MIME type based on radio selection.
     
     This sample supports PostScript and JPEG files; these are just two of a number of MIME types, for example:
     
     –application/postscript // We insert the PS for the PMPrintSettings into the PostScript stream.
     –application/vnd.cups-postscript // Raw postscript/finished postscript.  We don't insert anything
     –application/pdf // PDF document
     –image/gif, image/jpeg, image/tiff // Images
     –text/plain, text/rtf, text/html // Text
     –application/vnd.cups-raw //Raw printer commands and escape codes, mainly for the printer venders
     –and more...
     */
    
    CFURLRef fileURL = NULL;
    CFStringRef mimeType = NULL;
    NSBundle *mainBundle = [NSBundle mainBundle];
    
    // Obtain the print settings from the printInfo.
    PMPrintSettings printSettings = [self.printInfo PMPrintSettings];
 
    if ([self.radioMatrix selectedRow] == 0) {
        // Selected the PostScript file.
        fileURL = (__bridge CFURLRef)[mainBundle URLForResource:@"testps" withExtension:@"ps"];
        mimeType = CFSTR("application/postscript");
    }
    else {
        /*
         Selected the JPEG file.
         For image files, tell the printing system to fit the image to the page.
         */
        PMPrintSettingsSetValue(printSettings, kPMFitToPageKey, CFSTR("true"), false);
        fileURL = (__bridge CFURLRef)[mainBundle URLForResource:@"testImage" withExtension:@"jpg"];
        mimeType = CFSTR("image/jpeg");
    }
    
    
    // Obtain the print session from the printInfo.
    PMPrintSession printSession = [self.printInfo PMPrintSession];
    PMDestinationType printDestination = 0;
    OSStatus status = noErr;
 
    // Verify that the destination is the printer.
    status = PMSessionGetDestinationType(printSession, printSettings, &printDestination);
    
    if ((status != noErr) || (printDestination != kPMDestinationPrinter)) {
        
        NSLog(@"Either got an error from PMSessionGetDestinationType or the print destination wasn't kPMDestinationPrinter");
        return;
    }
    
    // The destination printer is needed by PMPrinterPrintWithFile and related functions.
    PMPrinter currentPrinter = NULL;
    status = PMSessionGetCurrentPrinter(printSession, &currentPrinter);
    
    if (status != noErr) {
        
        NSLog(@"Got an error from PMSessionGetCurrentPrinter (%d)", status);
        return;
    }
    
    /*
     One reason PMPrinterPrintWithFile may fail is if the specified printer can not handle the file's mime type. Use PMPrinterGetMimeTypes() to check whether a mime type is supported.
     */
    CFArrayRef mimeTypes;
    status = PMPrinterGetMimeTypes(currentPrinter, printSettings, &mimeTypes);
    
    if (status == noErr && mimeTypes != NULL) {
        
        CFIndex arrayCount = CFArrayGetCount(mimeTypes);
        if (CFArrayContainsValue(mimeTypes, CFRangeMake(0, arrayCount), mimeType)) {
            
            // Obtain the page format from the printInfo.
            PMPageFormat pageFormat =  [self.printInfo PMPageFormat];
 
            status = PMPrinterPrintWithFile(currentPrinter, printSettings, pageFormat, mimeType, fileURL);
            if (status != noErr) {
                NSLog(@"PMPrinterPrintWithFile returned error %d", status);
            }
        }
        else {
            
            NSLog(@"MIME type %@ isn't supported by the printer", (__bridge NSString *)mimeType);
        }
    }
}
 
 
@end