Zint是一个开源生成二维码的封装库，常见的二维码和条形码都可以生成。
zint.h
/* zint.h - definitions for libzint
libzint - the open source barcode library
Copyright (C) 2009-2020 Robin Stuart <rstuart114@gmail.com>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the project nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
/* vim: set ts=4 sw=4 et : */
#ifndef ZINT_H
#define ZINT_H
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
struct zint_render_line {
float x, y, length, width;
struct zint_render_line *next; /* Pointer to next line */
};
struct zint_vector_rect {
float x, y, height, width;
int colour;
struct zint_vector_rect *next;
};
struct zint_render_string {
float x, y, fsize;
float width; /* Suggested string width, may be 0 if none recommended */
int length;
unsigned char *text;
struct zint_render_string *next; /* Pointer to next character */
};
struct zint_vector_string {
float x, y, fsize;
float width; /* Suggested string width, may be 0 if none recommended */
int length;
unsigned char *text;
struct zint_vector_string *next; /* Pointer to next character */
};
struct zint_render_ring {
float x, y, radius, line_width;
struct zint_render_ring *next; /* Pointer to next ring */
};
struct zint_vector_circle {
float x, y, diameter;
int colour;
struct zint_vector_circle *next; /* Pointer to next circle */
};
struct zint_render_hexagon {
float x, y, height;
struct zint_render_hexagon *next; /* Pointer to next hexagon */
};
struct zint_vector_hexagon {
float x, y, diameter;
struct zint_vector_hexagon *next; /* Pointer to next hexagon */
};
struct zint_render {
float width, height;
struct zint_render_line *lines; /* Pointer to first line */
struct zint_render_string *strings; /* Pointer to first string */
struct zint_render_ring *rings; /* Pointer to first ring */
struct zint_render_hexagon *hexagons; /* Pointer to first hexagon */
};
struct zint_vector {
float width, height;
struct zint_vector_rect *rectangles; /* Pointer to first rectangle */
struct zint_vector_hexagon *hexagons; /* Pointer to first hexagon */
struct zint_vector_string *strings; /* Points to first string */
struct zint_vector_circle *circles; /* Points to first circle */
};
struct zint_symbol {
int symbology;
int height;
int whitespace_width;
int border_width;
int output_options;
char fgcolour[10];
char bgcolour[10];
char outfile[256];
float scale;
int option_1;
int option_2;
int option_3;
int show_hrt;
int fontsize;
int input_mode;
int eci;
unsigned char text[128];
int rows;
int width;
char primary[128];
unsigned char encoded_data[200][143];
int row_height[200]; /* Largest symbol is 189 x 189 Han Xin */
char errtxt[100];
unsigned char *bitmap;
int bitmap_width;
int bitmap_height;
unsigned int bitmap_byte_length;
float dot_size;
struct zint_vector *vector;
struct zint_render *rendered;
int debug;
};
#define ZINT_VERSION_MAJOR 2
#define ZINT_VERSION_MINOR 8
#define ZINT_VERSION_RELEASE 0
/* Tbarcode 7 codes */
#define BARCODE_CODE11 1
#define BARCODE_C25MATRIX 2
#define BARCODE_C25INTER 3
#define BARCODE_C25IATA 4
#define BARCODE_C25LOGIC 6
#define BARCODE_C25IND 7
#define BARCODE_CODE39 8
#define BARCODE_EXCODE39 9
#define BARCODE_EANX 13
#define BARCODE_EANX_CHK 14
#define BARCODE_EAN128 16
#define BARCODE_CODABAR 18
#define BARCODE_CODE128 20
#define BARCODE_DPLEIT 21
#define BARCODE_DPIDENT 22
#define BARCODE_CODE16K 23
#define BARCODE_CODE49 24
#define BARCODE_CODE93 25
#define BARCODE_FLAT 28
#define BARCODE_RSS14 29
#define BARCODE_RSS_LTD 30
#define BARCODE_RSS_EXP 31
#define BARCODE_TELEPEN 32
#define BARCODE_UPCA 34
#define BARCODE_UPCA_CHK 35
#define BARCODE_UPCE 37
#define BARCODE_UPCE_CHK 38
#define BARCODE_POSTNET 40
#define BARCODE_MSI_PLESSEY 47
#define BARCODE_FIM 49
#define BARCODE_LOGMARS 50
#define BARCODE_PHARMA 51
#define BARCODE_PZN 52
#define BARCODE_PHARMA_TWO 53
#define BARCODE_PDF417 55
#define BARCODE_PDF417TRUNC 56
#define BARCODE_MAXICODE 57
#define BARCODE_QRCODE 58
#define BARCODE_CODE128B 60
#define BARCODE_AUSPOST 63
#define BARCODE_AUSREPLY 66
#define BARCODE_AUSROUTE 67
#define BARCODE_AUSREDIRECT 68
#define BARCODE_ISBNX 69
#define BARCODE_RM4SCC 70
#define BARCODE_DATAMATRIX 71
#define BARCODE_EAN14 72
#define BARCODE_VIN 73
#define BARCODE_CODABLOCKF 74
#define BARCODE_NVE18 75
#define BARCODE_JAPANPOST 76
#define BARCODE_KOREAPOST 77
#define BARCODE_RSS14STACK 79
#define BARCODE_RSS14STACK_OMNI 80
#define BARCODE_RSS_EXPSTACK 81
#define BARCODE_PLANET 82
#define BARCODE_MICROPDF417 84
#define BARCODE_ONECODE 85
#define BARCODE_PLESSEY 86
/* Tbarcode 8 codes */
#define BARCODE_TELEPEN_NUM 87
#define BARCODE_ITF14 89
#define BARCODE_KIX 90
#define BARCODE_AZTEC 92
#define BARCODE_DAFT 93
#define BARCODE_MICROQR 97
/* Tbarcode 9 codes */
#define BARCODE_HIBC_128 98
#define BARCODE_HIBC_39 99
#define BARCODE_HIBC_DM 102
#define BARCODE_HIBC_QR 104
#define BARCODE_HIBC_PDF 106
#define BARCODE_HIBC_MICPDF 108
#define BARCODE_HIBC_BLOCKF 110
#define BARCODE_HIBC_AZTEC 112
/* Tbarcode 10 codes */
#define BARCODE_DOTCODE 115
#define BARCODE_HANXIN 116
/*Tbarcode 11 codes*/
#define BARCODE_MAILMARK 121
/* Zint specific */
#define BARCODE_AZRUNE 128
#define BARCODE_CODE32 129
#define BARCODE_EANX_CC 130
#define BARCODE_EAN128_CC 131
#define BARCODE_RSS14_CC 132
#define BARCODE_RSS_LTD_CC 133
#define BARCODE_RSS_EXP_CC 134
#define BARCODE_UPCA_CC 135
#define BARCODE_UPCE_CC 136
#define BARCODE_RSS14STACK_CC 137
#define BARCODE_RSS14_OMNI_CC 138
#define BARCODE_RSS_EXPSTACK_CC 139
#define BARCODE_CHANNEL 140
#define BARCODE_CODEONE 141
#define BARCODE_GRIDMATRIX 142
#define BARCODE_UPNQR 143
#define BARCODE_ULTRA 144
#define BARCODE_RMQR 145
// Output options
#define BARCODE_NO_ASCII 1
#define BARCODE_BIND 2
#define BARCODE_BOX 4
#define BARCODE_STDOUT 8
#define READER_INIT 16
#define SMALL_TEXT 32
#define BOLD_TEXT 64
#define CMYK_COLOUR 128
#define BARCODE_DOTTY_MODE 256
#define GS1_GS_SEPARATOR 512
// Input data types
#define DATA_MODE 0
#define UNICODE_MODE 1
#define GS1_MODE 2
#define ESCAPE_MODE 8
// Data Matrix specific options (option_3)
#define DM_SQUARE 100
#define DM_DMRE 101
// QR, Han Xin, Grid Matrix specific options (option_3)
#define ZINT_FULL_MULTIBYTE 200
// Ultracode specific option (option_3)
#define ULTRA_COMPRESSION 128
// Warning and error conditions
#define ZINT_WARN_INVALID_OPTION 2
#define ZINT_WARN_USES_ECI 3
#define ZINT_ERROR_TOO_LONG 5
#define ZINT_ERROR_INVALID_DATA 6
#define ZINT_ERROR_INVALID_CHECK 7
#define ZINT_ERROR_INVALID_OPTION 8
#define ZINT_ERROR_ENCODING_PROBLEM 9
#define ZINT_ERROR_FILE_ACCESS 10
#define ZINT_ERROR_MEMORY 11
// Raster file types
#define OUT_BUFFER 0
#define OUT_SVG_FILE 10
#define OUT_EPS_FILE 20
#define OUT_EMF_FILE 30
#define OUT_PNG_FILE 100
#define OUT_BMP_FILE 120
#define OUT_GIF_FILE 140
#define OUT_PCX_FILE 160
#define OUT_JPG_FILE 180
#define OUT_TIF_FILE 200
// Debug flags
#define ZINT_DEBUG_PRINT 1
#define ZINT_DEBUG_TEST 2
#if defined(__WIN32__) || defined(_WIN32) || defined(WIN32) || defined(_MSC_VER)
#if defined (DLL_EXPORT) || defined(PIC) || defined(_USRDLL)
#define ZINT_EXTERN __declspec(dllexport)
#elif defined(ZINT_DLL)
#define ZINT_EXTERN __declspec(dllimport)
#else
#define ZINT_EXTERN extern
#endif
#else
#define ZINT_EXTERN extern
#endif
ZINT_EXTERN struct zint_symbol *ZBarcode_Create(void);
ZINT_EXTERN void ZBarcode_Clear(struct zint_symbol *symbol);
ZINT_EXTERN void ZBarcode_Delete(struct zint_symbol *symbol);
ZINT_EXTERN int ZBarcode_Encode(struct zint_symbol *symbol, const unsigned char *source, int in_length);
ZINT_EXTERN int ZBarcode_Encode_File(struct zint_symbol *symbol, char *filename);
ZINT_EXTERN int ZBarcode_Print(struct zint_symbol *symbol, int rotate_angle);
ZINT_EXTERN int ZBarcode_Encode_and_Print(struct zint_symbol *symbol, unsigned char *input, int length, int rotate_angle);
ZINT_EXTERN int ZBarcode_Encode_File_and_Print(struct zint_symbol *symbol, char *filename, int rotate_angle);
ZINT_EXTERN int ZBarcode_Buffer(struct zint_symbol *symbol, int rotate_angle);
ZINT_EXTERN int ZBarcode_Buffer_Vector(struct zint_symbol *symbol, int rotate_angle);
ZINT_EXTERN int ZBarcode_Encode_and_Buffer(struct zint_symbol *symbol, unsigned char *input, int length, int rotate_angle);
ZINT_EXTERN int ZBarcode_Encode_and_Buffer_Vector(struct zint_symbol *symbol, unsigned char *input, int length, int rotate_angle);
ZINT_EXTERN int ZBarcode_Encode_File_and_Buffer(struct zint_symbol *symbol, char *filename, int rotate_angle);
ZINT_EXTERN int ZBarcode_Encode_File_and_Buffer_Vector(struct zint_symbol *symbol, char *filename, int rotate_angle);
ZINT_EXTERN int ZBarcode_ValidID(int symbol_id);
ZINT_EXTERN int ZBarcode_Version();
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* ZINT_H */
使用：
zint_symbol *symbol = ZBarcode_Create();
*symbol = ZBarcode_Create();
symbol->border_width = 2;
symbol->symbology = BARCODE_DATAMATRIX;
symbol->scale = 2.5;
symbol->option_3 = DM_SQUARE;//自动模式，根据数据量自动选择二维码大小。
symbol->output_options += BOLD_TEXT;
ZBarcode_Encode_and_Buffer(symbol, (unsigned char *) bytes.data(), bytes.size(), 0);
QImage image;
image = QImage(symbol->bitmap, symbol->bitmap_width, symbol->bitmap_height,3*symbol->bitmap_width, QImage::Format_RGB888);
image.save("zint.bmp");
ZBarcode_Delete(symbol);固定二维码大小：
symbol->option_3不要设置，需要设置option_2，选项对应说明如下：