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NSColor+Hex
#import <Cocoa/Cocoa.h>
@interface NSColor (Hex)
- (NSString *)hexadecimalValue;
+ (NSColor *)colorFromHexadecimalValue:(NSString *)hex;
@end
#import "NSColor+Hex.h"
@implementation NSColor (Hex)
- (NSString *)hexadecimalValue {
double redFloatValue, greenFloatValue, blueFloatValue;
int redIntValue, greenIntValue, blueIntValue;
NSString *redHexValue, *greenHexValue, *blueHexValue;
NSColor *convertedColor = [self colorUsingColorSpaceName:NSCalibratedRGBColorSpace];
if(convertedColor) {
[convertedColor getRed:&redFloatValue green:&greenFloatValue blue:&blueFloatValue alpha:NULL];
redIntValue = redFloatValue*255.99999f;
greenIntValue = greenFloatValue*255.99999f;
blueIntValue = blueFloatValue*255.99999f;
redHexValue = [NSString stringWithFormat:@"%02x", redIntValue];
greenHexValue = [NSString stringWithFormat:@"%02x", greenIntValue];
blueHexValue = [NSString stringWithFormat:@"%02x", blueIntValue];
return [NSString stringWithFormat:@"#%@%@%@", redHexValue, greenHexValue, blueHexValue];
}
return nil;
}
+ (NSColor *)colorFromHexadecimalValue:(NSString *)hex {
if ([hex hasPrefix:@"#"]) {
hex = [hex substringWithRange:NSMakeRange(1, [hex length] - 1)];
}
unsigned int colorCode = 0;
if (hex) {
NSScanner *scanner = [NSScanner scannerWithString:hex];
(void)[scanner scanHexInt:&colorCode];
}
return [NSColor colorWithDeviceRed:((colorCode>>16)&0xFF)/255.0 green:((colorCode>>8)&0xFF)/255.0 blue:((colorCode)&0xFF)/255.0 alpha:1.0];
}
@end

Should line 52 be colorWithCalibratedRed:green:blue:alpha since you're using the calibrated color space on line 20?

shallad commented Jul 8, 2015

http://stackoverflow.com/questions/12568450/whats-the-difference-between-colorwithsrgbred-vs-colorwithdevicered-vs-colorwit
This also recommends to use calibrated color space instead of device color space.

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