// ----------------------------------------------------------------------------------- // NKDBarcode.m // ----------------------------------------------------------------------------------- // Created by Jeff LaMarche on Wed May 01 2002. // Copyright (c) 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 "NKDBarcode.h" #import @implementation NKDBarcode // ----------------------------------------------------------------------------------- -(id)initWithContent: (NSString *)inContent // ----------------------------------------------------------------------------------- { return [self initWithContent: inContent printsCaption: YES]; } // ----------------------------------------------------------------------------------- -(id)initWithContent: (NSString *)inContent printsCaption: (BOOL)inPrints // ----------------------------------------------------------------------------------- { return [self initWithContent:inContent printsCaption:inPrints andBarWidth:.013*kScreenResolution andHeight:.5*kScreenResolution andFontSize:6.0 andCheckDigit:(char)-1]; } // ----------------------------------------------------------------------------------- -(id)initWithContent: (NSString *)inContent printsCaption: (BOOL)inPrints andBarWidth: (float)inBarWidth andHeight: (float)inHeight andFontSize: (float)inFontSize andCheckDigit: (char)inDigit // ----------------------------------------------------------------------------------- { if (self = [super init]) { if (!inContent) { return nil; } [self setContent:inContent]; [self setBarWidth:inBarWidth]; [self setPrintsCaption:inPrints]; //if (![self printsCaption]) [self setHeight:inHeight]; //else [self setHeight:inHeight + (captionHeight*kScreenResolution)]; // Calculate width based on number of bars needed to encode this content [self calculateWidth]; [self setFontSize: inFontSize]; // Check digit of -1 means no check digit - couldn't use 0 because // 0 could be a valid check digit. Typically calculated, not set // outside of the class [self setCheckDigit: inDigit]; } return self; } // ----------------------------------------------------------------------------------- -(void)setContent:(NSString *)inContent // ----------------------------------------------------------------------------------- { content = inContent; } // ----------------------------------------------------------------------------------- -(void)setHeight:(float)inHeight // ----------------------------------------------------------------------------------- { height = inHeight; } // ----------------------------------------------------------------------------------- -(void)setWidth:(float)inWidth // ----------------------------------------------------------------------------------- { width = inWidth; } // ----------------------------------------------------------------------------------- -(void)calculateWidth // ----------------------------------------------------------------------------------- { [self setWidth:[[self completeBarcode] length] * [self barWidth]]; } // ----------------------------------------------------------------------------------- -(void)setCheckDigit:(char)inCheckDigit // ----------------------------------------------------------------------------------- { checkDigit = inCheckDigit; } // ----------------------------------------------------------------------------------- -(void)setPrintsCaption:(BOOL)inPrints // ----------------------------------------------------------------------------------- { printsCaption = inPrints; } // ----------------------------------------------------------------------------------- -(void)setBarWidth:(float)inBarWidth // ----------------------------------------------------------------------------------- { barWidth = inBarWidth; } // ----------------------------------------------------------------------------------- -(NSString *)content // ----------------------------------------------------------------------------------- { return content; } // ----------------------------------------------------------------------------------- -(float)height // ----------------------------------------------------------------------------------- { return height; } // ----------------------------------------------------------------------------------- -(float)width // ----------------------------------------------------------------------------------- { return width; } // ----------------------------------------------------------------------------------- -(char)checkDigit // ----------------------------------------------------------------------------------- { return checkDigit; } // ----------------------------------------------------------------------------------- -(BOOL)printsCaption // ----------------------------------------------------------------------------------- { return printsCaption; } // ----------------------------------------------------------------------------------- -(float)barWidth // ----------------------------------------------------------------------------------- { return barWidth; } // ----------------------------------------------------------------------------------- -(BOOL)isSizeValid // ----------------------------------------------------------------------------------- { return YES; } // ----------------------------------------------------------------------------------- -(void)generateChecksum // ----------------------------------------------------------------------------------- { // Stub } // ----------------------------------------------------------------------------------- -(BOOL) isContentValid // ----------------------------------------------------------------------------------- { int i; char *contentString; contentString = (char *)[[self content] cStringUsingEncoding:NSStringEncodingConversionAllowLossy]; for (i = 0; i < strlen(contentString); i++) if ([[self _encodeChar:contentString[i]] isEqual:@""]) return NO; return YES; } // ----------------------------------------------------------------------------------- -(NSString *)initiator // ----------------------------------------------------------------------------------- { return @""; } // ----------------------------------------------------------------------------------- -(NSString *)terminator // ----------------------------------------------------------------------------------- { return @""; } // ----------------------------------------------------------------------------------- -(NSString *)_encodeChar:(char)inChar // ----------------------------------------------------------------------------------- { // Subclasses MUST override - we'll encode dummy character for testing return @"1010"; } // ----------------------------------------------------------------------------------- -(NSString *)barcode // ----------------------------------------------------------------------------------- { NSMutableString *theReturn = [NSMutableString stringWithString:@""]; int i; char *contentString; contentString = (char *)[[self content] cStringUsingEncoding:NSStringEncodingConversionAllowLossy]; for (i = 0; i < strlen(contentString); i++) [theReturn appendString:[self _encodeChar:contentString[i]]]; if (checkDigit != -1) [theReturn appendString:[self _encodeChar:checkDigit]]; return theReturn; } // ----------------------------------------------------------------------------------- -(NSString *)completeBarcode // ----------------------------------------------------------------------------------- { return [NSString stringWithFormat:@"%@%@%@", [self initiator], [self barcode], [self terminator]]; } // ----------------------------------------------------------------------------------- -(void)setCaptionHeight:(float)inHeight // ----------------------------------------------------------------------------------- { captionHeight = inHeight; } // ----------------------------------------------------------------------------------- -(float)captionHeight // ----------------------------------------------------------------------------------- { return captionHeight; } // ----------------------------------------------------------------------------------- -(void)setFontSize:(float)inSize // ----------------------------------------------------------------------------------- { UIFont *font; fontSize = inSize; font = [UIFont systemFontOfSize:[self fontSize]]; [self setCaptionHeight: ([font capHeight]/72) + (.35 * ([font capHeight]/72))]; } // ----------------------------------------------------------------------------------- -(float) fontSize // ----------------------------------------------------------------------------------- { return fontSize; } // ----------------------------------------------------------------------------------- -(int)digitsToLeft // ----------------------------------------------------------------------------------- { return 0; } // ----------------------------------------------------------------------------------- -(int)digitsToRight // ----------------------------------------------------------------------------------- { return 0; } // ----------------------------------------------------------------------------------- -(NSString *)leftCaption // ----------------------------------------------------------------------------------- { return [content substringWithRange:NSMakeRange(0, [self digitsToLeft])]; } // ----------------------------------------------------------------------------------- -(NSString *)rightCaption // ----------------------------------------------------------------------------------- { return [content substringWithRange:NSMakeRange([content length] - [self digitsToRight], [self digitsToRight])]; } // ----------------------------------------------------------------------------------- -(NSString *)caption // ----------------------------------------------------------------------------------- { if ( ([self digitsToRight] == 0) && ([self digitsToLeft] == 0)) return content; else return [content substringWithRange:NSMakeRange([self digitsToLeft], [content length] - [self digitsToLeft] - [self digitsToRight])]; } // ----------------------------------------------------------------------------------- -(float)barBottom:(int)index // ----------------------------------------------------------------------------------- { if ([self printsCaption]) return captionHeight * kScreenResolution; else return 0.0; } // ----------------------------------------------------------------------------------- -(float)barTop:(int)index // ----------------------------------------------------------------------------------- { return [self height]; } // ----------------------------------------------------------------------------------- -(float)firstBar // ----------------------------------------------------------------------------------- { return 0; } // ----------------------------------------------------------------------------------- -(float)lastBar // ----------------------------------------------------------------------------------- { return [self width] - [self barWidth]; } // ----------------------------------------------------------------------------------- -(NSString *)description // ----------------------------------------------------------------------------------- { return [NSString stringWithFormat:@"\n\tBarcode Class: %@\n\tContent: %@\n\tCheck Digit:%c\n\tWidth:%f\n\t%Height:%f\n\tBar Width:%f\n\tFont Size:%f\n\tCaption Height:%f", [self class], [self content], [self checkDigit], [self width], [self height], [self barWidth], [self fontSize], [self captionHeight]]; } // ----------------------------------------------------------------------------------- - (BOOL)isEqual:(id)anObject // ----------------------------------------------------------------------------------- { NKDBarcode *compare; compare = anObject; return ([[self content] isEqual:[compare content]]); } // ----------------------------------------------------------------------------------- - (id)copyWithZone:(NSZone *)zone // ----------------------------------------------------------------------------------- { NKDBarcode *ret = [[[self class] alloc] initWithContent: [self content] printsCaption: [self printsCaption] andBarWidth: [self barWidth] andHeight: [self height] andFontSize: [self fontSize] andCheckDigit: [self checkDigit]]; [ret calculateWidth]; return ret; } // ----------------------------------------------------------------------------------- - (id)initWithCoder:(NSCoder *)coder // ----------------------------------------------------------------------------------- { // Since we subclass NSObject, this call to super // init is not necessary, but it's good form to // include it, as it is possible that someday // NSObject's -init method will do something // ----------------------------------------------- self = [super init]; [self setContent:[coder decodeObject]]; [coder decodeValueOfObjCType:@encode(BOOL) at:&printsCaption]; [coder decodeValueOfObjCType:@encode(float) at:&barWidth]; [coder decodeValueOfObjCType:@encode(float) at:&width]; [coder decodeValueOfObjCType:@encode(float) at:&height]; [coder decodeValueOfObjCType:@encode(float) at:&fontSize]; [coder decodeValueOfObjCType:@encode(float) at:&captionHeight]; [coder decodeValueOfObjCType:@encode(char) at:&checkDigit]; return self; } //---------------------------------------------------------------------- - (void) encodeWithCoder: (NSCoder *)coder //---------------------------------------------------------------------- { [coder encodeObject:[self content]]; [coder encodeValueOfObjCType:@encode(BOOL) at:&printsCaption]; [coder encodeValueOfObjCType:@encode(float) at:&barWidth]; [coder encodeValueOfObjCType:@encode(float) at:&width]; [coder encodeValueOfObjCType:@encode(float) at:&height]; [coder encodeValueOfObjCType:@encode(float) at:&fontSize]; [coder encodeValueOfObjCType:@encode(float) at:&captionHeight]; [coder encodeValueOfObjCType:@encode(char) at:&checkDigit]; } @end