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comparison mupdf-source/thirdparty/zxing-cpp/wrappers/ios/Sources/Wrapper/Writer/ZXIBarcodeWriter.mm @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 // Copyright 2022 KURZ Digital Solutions GmbH
2 //
3 // SPDX-License-Identifier: Apache-2.0
4
5 #import <CoreGraphics/CoreGraphics.h>
6 #import "ZXIBarcodeWriter.h"
7 #import "ZXIWriterOptions.h"
8 #import "MultiFormatWriter.h"
9 #import "BitMatrix.h"
10 #import "BitMatrixIO.h"
11 #import "ZXIFormatHelper.h"
12 #import "ZXIErrors.h"
13 #import <iostream>
14
15 using namespace ZXing;
16
17 std::wstring NSStringToStringW(NSString* str) {
18 NSData* asData = [str dataUsingEncoding:CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingUTF32LE)];
19 return std::wstring((wchar_t*)[asData bytes], [asData length] /
20 sizeof(wchar_t));
21 }
22
23 std::wstring NSDataToStringW(NSData *data) {
24 std::wstring s;
25 const unsigned char *bytes = (const unsigned char *) [data bytes];
26 size_t len = [data length];
27 for (int i = 0; i < len; ++i) {
28 s.push_back(bytes[i]);
29 }
30 return s;
31 }
32
33 @implementation ZXIBarcodeWriter
34
35 - (instancetype)init {
36 return [self initWithOptions: [[ZXIWriterOptions alloc] init]];
37 }
38
39 - (instancetype)initWithOptions:(ZXIWriterOptions*)options{
40 self = [super init];
41 self.options = options;
42 return self;
43 }
44
45 -(CGImageRef)writeData:(NSData *)data
46 error:(NSError *__autoreleasing _Nullable *)error {
47 return [self encode: NSDataToStringW(data)
48 encoding: CharacterSet::BINARY
49 format: self.options.format
50 width: self.options.width
51 height: self.options.height
52 margin: self.options.margin
53 ecLevel: self.options.ecLevel
54 error: error];
55 }
56
57 -(CGImageRef)writeString:(NSString *)contents
58 error:(NSError *__autoreleasing _Nullable *)error {
59 return [self encode: NSStringToStringW(contents)
60 encoding: CharacterSet::UTF8
61 format: self.options.format
62 width: self.options.width
63 height: self.options.height
64 margin: self.options.margin
65 ecLevel: self.options.ecLevel
66 error: error];
67 }
68
69 -(CGImageRef)encode:(std::wstring)content
70 encoding:(CharacterSet)encoding
71 format:(ZXIFormat)format
72 width:(int)width
73 height:(int)height
74 margin:(int)margin
75 ecLevel:(int)ecLevel
76 error:(NSError *__autoreleasing _Nullable *)error {
77 MultiFormatWriter writer { BarcodeFormatFromZXIFormat(format) };
78 writer.setEncoding(encoding);
79 writer.setMargin(margin);
80 writer.setEccLevel(ecLevel);
81 // Catch exception for invalid formats
82 try {
83 BitMatrix bitMatrix = writer.encode(content, width, height);
84 return [self inflate:&bitMatrix];
85 } catch(std::exception &e) {
86 SetNSError(error, ZXIWriterError, e.what());
87 return nil;
88 }
89 }
90
91 -(CGImageRef)inflate:(BitMatrix *)bitMatrix {
92 int realWidth = bitMatrix->width();
93 int realHeight = bitMatrix->height();
94
95 #ifdef DEBUG
96 std::cout << ToString(*bitMatrix, 'X', ' ', false, false);
97 #endif
98
99 NSMutableData *resultAsNSData = [[NSMutableData alloc] initWithLength:realWidth * realHeight];
100 size_t index = 0;
101 uint8_t *bytes = (uint8_t*)resultAsNSData.mutableBytes;
102 for (int y = 0; y < realHeight; ++y) {
103 for (int x = 0; x < realWidth; ++x) {
104 bytes[index] = bitMatrix->get(x, y) ? 0 : 255;
105 ++index;
106 }
107 }
108
109 CGColorSpaceRef colorSpace = CGColorSpaceCreateWithName(kCGColorSpaceGenericGray);
110
111 return CGImageCreate(realWidth,
112 realHeight,
113 8,
114 8,
115 realWidth,
116 colorSpace,
117 kCGBitmapByteOrderDefault,
118 CGDataProviderCreateWithCFData((CFDataRef)resultAsNSData),
119 NULL,
120 YES,
121 kCGRenderingIntentDefault);
122 }
123
124 @end