mirror of
https://github.com/MacPass/MacPass.git
synced 2025-12-13 08:52:20 +00:00
57 lines
1.9 KiB
Objective-C
57 lines
1.9 KiB
Objective-C
//
|
|
// NSImage+MPQRCode.m
|
|
// MacPass
|
|
//
|
|
// Created by Michael Starke on 10.12.20.
|
|
// Copyright © 2020 HicknHack Software GmbH. All rights reserved.
|
|
//
|
|
|
|
#import "NSImage+MPQRCode.h"
|
|
#import <CoreImage/CoreImage.h>
|
|
|
|
@implementation NSImage (MPQRCode)
|
|
|
|
- (NSString *)QRCodeString {
|
|
NSRect rect = NSMakeRect(0, 0, self.size.width, self.size.height);
|
|
id imageRep = [self bestRepresentationForRect:rect context:nil hints:nil];
|
|
if(![imageRep isKindOfClass:NSBitmapImageRep.class]) {
|
|
return @"";
|
|
}
|
|
NSBitmapImageRep *bitmapRep = (NSBitmapImageRep *)imageRep;
|
|
CIImage *ciImage = [[CIImage alloc] initWithBitmapImageRep:bitmapRep];
|
|
CIDetector *detector = [CIDetector detectorOfType:CIDetectorTypeQRCode context:nil options:nil];
|
|
NSArray<CIFeature *> *features = [detector featuresInImage:ciImage];
|
|
for(CIFeature *feature in features) {
|
|
if(feature.type == CIFeatureTypeQRCode) {
|
|
CIQRCodeFeature *qrCodeFeature = (CIQRCodeFeature *)feature;
|
|
return qrCodeFeature.messageString;
|
|
}
|
|
}
|
|
return @"";
|
|
}
|
|
|
|
|
|
+ (instancetype)QRCodeImageWithString:(NSString *)string {
|
|
NSData *asciiData = [string dataUsingEncoding:NSISOLatin1StringEncoding];
|
|
if(!asciiData) {
|
|
return nil;
|
|
}
|
|
CIFilter *qrCodeFilter = [CIFilter filterWithName:@"CIQRCodeGenerator" withInputParameters:@{@"inputMessage": asciiData}];
|
|
NSAffineTransform *scale = [[NSAffineTransform alloc] init];
|
|
[scale scaleBy:5];
|
|
|
|
CIFilter *scaleFilter = [CIFilter filterWithName:@"CIAffineTransform" withInputParameters:@{@"inputImage": qrCodeFilter.outputImage, @"inputTransform": scale}];
|
|
return [[NSImage alloc] initWithCIImage:scaleFilter.outputImage];
|
|
}
|
|
|
|
- (instancetype)initWithCIImage:(CIImage *)ciImage {
|
|
NSCIImageRep *imageRep = [NSCIImageRep imageRepWithCIImage:ciImage];
|
|
self = [self initWithSize:[imageRep size]];
|
|
if(self) {
|
|
[self addRepresentation:imageRep];
|
|
}
|
|
return self;
|
|
}
|
|
|
|
@end
|