Drawing a PDF

PDF Draw.m

- (void) awakeFromNib {
    self.opaque = YES;
    self.clearsContextBeforeDrawing = YES;
    [self setNeedsDisplay];
    NSBundle *main = [NSBundle mainBundle];
    
    // Open PDF
    CGPDFDocumentRef doc = CGPDFDocumentCreateWithURL((CFURLRef)[main URLForResource: @"NC.pdf" withExtension: nil]);
    
    if (doc == NULL)
        @throw @"Resource does not exist.";
    
    // Get First Page
    CGPDFPageRef page = CGPDFDocumentGetPage(doc, 1);
    
    if (page == NULL)
        @throw @"Resource does not contain assets.";
    
    CGPDFPageRetain(page);
    
    // Get Page Size
    CGRect pagesize = CGPDFPageGetBoxRect(page, kCGPDFMediaBox);
    
    // Start Drawing Context to Render PDF
    UIGraphicsBeginImageContext(pagesize.size);
    
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextSetRGBFillColor(context, 1.0, 1.0, 1.0, 1.0);
    
    CGContextFillRect(context, pagesize);
    
    CGContextSaveGState(context);
    
    // Flip Context to render PDF correctly
    CGContextTranslateCTM(context, 0.0, pagesize.size.height);
    CGContextScaleCTM(context, 1.0, -1.0);
    
    // Scale PDF - ignored at this point (repeat last command with size
    CGContextDrawPDFPage(context, page);
    CGContextRestoreGState(context);
    
    self.test_NC = UIGraphicsGetImageFromCurrentImageContext();
    
    UIGraphicsEndImageContext();
    
//    CGContextRelease(context);
//    CGPDFPageRelease(page);

  //  CGPDFDocumentRelease(doc);
    
    CALayer *image = [CALayer layer];
    image.contents = (id)self.test_NC.CGImage;
    image.frame = CGRectMake(20, 20, 100, 100);
    image.hidden = NO;
    [self.layer addSublayer: image];
    [image retain];
    
    
  
}