// ----------------------------------------------------------------------------------- // NKDBarcodeOffscreenView.m // ----------------------------------------------------------------------------------- // Created by Jeff LaMarche on Mon May 06 2002. // �2002 Naked Software. All rights reserved. // ----------------------------------------------------------------------------------- // THIS SOURCE CODE IS PROVIDED AS-IS WITH NO WARRANTY OF ANY KIND // ----------------------------------------------------------------------------------- // You may use and redistribute this source code without limitation // ----------------------------------------------------------------------------------- #import "NKDBarcodeOffscreenView.h" @implementation NKDBarcodeOffscreenView - (id)initWithBarcode:(NKDBarcode *)inBarcode { CGRect frame = CGRectMake(0,0,[inBarcode width], [inBarcode height]); // Calculate frame and then... self = [super initWithFrame:frame]; if (self) { [self setBarcode:inBarcode]; } return self; } // A more elegant solution offered by Sato Akira (arigoto!) - (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSetAllowsAntialiasing(context, false); CGContextSetInterpolationQuality(context, kCGInterpolationNone); int i, barCount=0; float curPos = [barcode firstBar]; NSString *codeString = [barcode completeBarcode]; BOOL started = NO; int lastBarIndex = -1; for (i = 0; i < [codeString length]; i++) { if ([codeString characterAtIndex:i] == '1') { if (!started) started = YES; barCount++; lastBarIndex = i; // If last character is a bar, it needs to be printed here. if (i == [codeString length]-1) { CGContextSetLineWidth(context, 0.0); CGMutablePathRef path = CGPathCreateMutable(); CGPathAddRect(path, NULL, CGRectMake(curPos, [barcode barBottom:lastBarIndex], [barcode barWidth] * barCount, [barcode barTop:lastBarIndex] - [barcode barBottom:lastBarIndex])); /* CGContextFillRect(context, CGRectMake(curPos, [barcode barBottom:lastBarIndex], [barcode barWidth] * barCount, [barcode barTop:lastBarIndex] - [barcode barBottom:lastBarIndex])); */ CGContextSetFillColorWithColor(context, [UIColor blackColor].CGColor); CGContextAddPath(context, path); CGContextDrawPath(context, kCGPathFill); CGPathRelease(path); CGContextSetFillColorWithColor(context, [UIColor whiteColor].CGColor); } } else { if (started) { CGContextSetLineWidth(context, 0.0); CGMutablePathRef path = CGPathCreateMutable(); /* CGContextFillRect(context, CGRectMake(curPos, [barcode barBottom:lastBarIndex], [barcode barWidth] * barCount, [barcode barTop:lastBarIndex] - [barcode barBottom:lastBarIndex] )); */ CGPathAddRect(path, NULL, CGRectMake(curPos, [barcode barBottom:lastBarIndex], [barcode barWidth] * barCount, [barcode barTop:lastBarIndex] - [barcode barBottom:lastBarIndex] )); CGContextSetFillColorWithColor(context, [UIColor blackColor].CGColor); CGContextAddPath(context, path); CGContextDrawPath(context, kCGPathFill); CGPathRelease(path); CGContextSetFillColorWithColor(context, [UIColor whiteColor].CGColor); } curPos += [barcode barWidth] * (barCount + 1); barCount = 0; started = NO; } } if ([barcode printsCaption]) { NSLog(@":::::::NOTE:::::: DOES NOT CURRENTLY PRINT CAPTION"); NSLog(@":::::::NOTE:::::: FIX PROGRAMMER"); /* NSMutableAttributedString *sAttr; float kerning; CGSize captionSize; CGRect bBounds = [self bounds]; float heightSpace = 0.0; float widthSpace = 0.0; float barWidth = [barcode barWidth]; NSString *leftCaption = [barcode leftCaption]; NSString *caption = [barcode caption]; NSString *rightCaption = [barcode rightCaption]; float yPos = bBounds.origin.y + heightSpace; //NSFont *font = [NSFont fontWithName:@"Lucida Grande" size:[barcode fontSize]]; UIFont *font = [UIFont systemFontOfSize:[barcode fontSize]]; NSMutableParagraphStyle *leftAligmentStyle = [[NSMutableParagraphStyle allocWithZone:[self zone]] init]; [leftAligmentStyle setParagraphStyle:[NSParagraphStyle defaultParagraphStyle]]; // Left caption for UPC / EAN if ((nil != leftCaption) && (NO == [leftCaption isEqualToString:@""])) { kerning = 0.0; sAttr = [[NSMutableAttributedString allocWithZone:[self zone]] initWithString:leftCaption attributes:[NSDictionary dictionaryWithObjectsAndKeys:font,NSFontAttributeName,leftAligmentStyle,NSParagraphStyleAttributeName,[NSNumber numberWithFloat:kerning],NSKernAttributeName,nil]]; captionSize = [sAttr size]; [sAttr drawAtPoint:NSMakePoint(bBounds.origin.x + widthSpace + 0.25 * [barcode firstBar],yPos + 3.0)]; [sAttr release]; } // Draw the main caption under the barcode if ((nil != caption) && (NO == [caption isEqualToString:@""])) { unsigned int cCount,captionLength; NSRange range; float container; NSArray *captions = [caption componentsSeparatedByString:@"\t"]; if (((nil != leftCaption) && (NO == [leftCaption isEqualToString:@""])) || (1 < [captions count])) { if (1 == [captions count]) // for UPCE // container = [barcode width] / (float)[captions count] - 2.0 * [[barcode initiator] length] * barWidth - 2.0 * [barcode firstBar]; else // for UPCA,EAN8,EAN13 // container = [barcode width] / (float)[captions count] - 1.0 * [[barcode initiator] length] * barWidth - [barcode firstBar]; // [[barcode initiator] length] == [[barcode terminator] length]; && [barcode firstBar] == [barcode width] - [barcode lastBar]; // for (cCount = 0; cCount < [captions count]; cCount++) { kerning = 0.0; sAttr = [[NSMutableAttributedString allocWithZone:[self zone]] initWithString:[captions objectAtIndex:cCount] attributes:[NSDictionary dictionaryWithObjectsAndKeys:font,NSFontAttributeName,leftAligmentStyle,NSParagraphStyleAttributeName,[NSNumber numberWithFloat:kerning],NSKernAttributeName,nil]]; captionSize = [sAttr size]; captionLength = [(NSString *)[captions objectAtIndex:cCount] length]; kerning = (container - captionSize.width) / (float)(2 * captionLength); range = NSMakeRange(0,captionLength); [sAttr setAttributes:[NSDictionary dictionaryWithObjectsAndKeys:font, NSFontAttributeName,leftAligmentStyle,NSParagraphStyleAttributeName,[NSNumber numberWithFloat:1.3 * kerning],NSKernAttributeName,nil] range:range]; [sAttr drawAtPoint:NSMakePoint(bBounds.origin.x + widthSpace + kerning * 3 + [barcode firstBar] + (float)(cCount + 1) * [[barcode initiator] length] * barWidth + (float)cCount * container,yPos)]; [sAttr release]; } } else { cCount = 0; kerning = 0.0; sAttr = [[NSMutableAttributedString allocWithZone:[self zone]] initWithString:[captions objectAtIndex:cCount] attributes:[NSDictionary dictionaryWithObjectsAndKeys:font,NSFontAttributeName,leftAligmentStyle,NSParagraphStyleAttributeName,[NSNumber numberWithFloat:kerning],NSKernAttributeName,nil]]; captionSize = [sAttr size]; captionLength = [(NSString *)[captions objectAtIndex:cCount] length]; container = [barcode width]; kerning = (container - captionSize.width) / (float)(2 * captionLength); range = NSMakeRange(0,captionLength); [sAttr setAttributes:[NSDictionary dictionaryWithObjectsAndKeys:font, NSFontAttributeName,leftAligmentStyle,NSParagraphStyleAttributeName,[NSNumber numberWithFloat:2.0 * kerning],NSKernAttributeName,nil] range:range]; [sAttr drawAtPoint:NSMakePoint(bBounds.origin.x + widthSpace + kerning,yPos)]; [sAttr release]; } } // Right caption for UPC / EAN if ((nil != rightCaption) && (NO == [rightCaption isEqualToString:@""])) { kerning = 0.0; sAttr = [[NSMutableAttributedString allocWithZone:[self zone]] initWithString:rightCaption attributes:[NSDictionary dictionaryWithObjectsAndKeys:font,NSFontAttributeName,leftAligmentStyle,NSParagraphStyleAttributeName,[NSNumber numberWithFloat:kerning],NSKernAttributeName,nil]]; [sAttr drawAtPoint:NSMakePoint(bBounds.origin.x + widthSpace + [barcode lastBar] + ([barcode width] * 0.07),yPos + 3.0)]; [sAttr release]; } [leftAligmentStyle release]; */ } } // ----------------------------------------------------------------------------------- -(NKDBarcode *)barcode // ----------------------------------------------------------------------------------- { return barcode; } // ----------------------------------------------------------------------------------- -(void)setBarcode:(NKDBarcode *)inBarcode // ----------------------------------------------------------------------------------- { barcode = inBarcode; } // ----------------------------------------------------------------------------------- -(BOOL)knowsPageRange:(NSRange *)rptr // ----------------------------------------------------------------------------------- { rptr->location = 1; rptr->length = 1; return YES; } // ----------------------------------------------------------------------------------- -(CGRect)rectForPage:(int)pageNum // ----------------------------------------------------------------------------------- { return CGRectMake(0,0,[[self barcode] width], [[self barcode] height]); } - (UIImage *)_renderViewAsImage:(CGRect) rect /* this method is not intended to be called directly */ /* used by dataWithPDFInsideRect: when multithreading is required */ { UIGraphicsBeginImageContext(CGSizeMake(rect.size.width, rect.size.height)); [self drawRect:rect]; UIImage * img = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return img; } - (UIImage *)imageInsideRect:(CGRect)rect /* This method overrides the default NSView version to allow the view to be rendered to PDF within another print operation. If there is already a print operation running on the current thread, this method spawns a new thread to render the PDF, otherwise the default NSView version of dataWithPDFInsideRect: is called... */ { UIImage * result = [self _renderViewAsImage:rect]; return result; } - (NSData *)pdfInsideRect:(CGRect)rect { NSMutableData * data = [NSMutableData data]; CGDataConsumerRef consumer = CGDataConsumerCreateWithCFData((CFMutableDataRef)data); CGRect media = CGRectMake(0.0, 0.0, rect.size.width, rect.size.height); CGContextRef context = CGPDFContextCreate(consumer, &media, (CFDictionaryRef)[NSDictionary dictionary]); UIGraphicsPushContext(context); CGPDFContextBeginPage(context, (CFDictionaryRef)[NSDictionary dictionary]); [self drawRect:rect]; UIGraphicsPopContext(); CGPDFContextEndPage(context); CGPDFContextClose(context); CGDataConsumerRelease(consumer); CGContextRelease(context); return data; } @end