mirror of
https://github.com/lakinduakash/linux-wifi-hotspot.git
synced 2024-11-21 19:40:11 +00:00
Use qrencode library to make qr code png
This commit is contained in:
Lakindu Akash
parent
74b4ffa12d
commit
359a6adf80
@ -2,7 +2,7 @@ CC=gcc
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PKGCONFIG = $(shell which pkg-config)
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CFLAGS=`pkg-config --cflags gtk+-3.0`
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LIBS=`pkg-config --libs gtk+-3.0 --libs x11` -lstdc++
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LIBS=`pkg-config --libs gtk+-3.0 --libs x11` -lstdc++ -lpng -lqrencode
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APP_NAME="wihotspot"
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APP_GUI_BINARY="wihotspot-gui"
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@ -16,7 +16,7 @@ GLIB_COMPILE_RESOURCES = $(shell $(PKGCONFIG) --variable=glib_compile_resources
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BUILT_SRC = resources.c
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_OBJ = main.o ui.o h_prop.o util.o read_config.o about_ui.o qr_ui.o $(BUILT_SRC:.c=.o)
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_OBJ = main.o ui.o h_prop.o util.o read_config.o about_ui.o qr_ui.o qrgen.o $(BUILT_SRC:.c=.o)
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OBJ = $(patsubst %,$(ODIR)/%,$(_OBJ))
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# Determine this makefile's path.
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206
src/ui/qrgen.cpp
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206
src/ui/qrgen.cpp
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@ -0,0 +1,206 @@
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//
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// Created by lakinduakash on 18/10/21.
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//
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/*
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Copyright (c) 2021, lakinduaksh
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <qrencode.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <fstream>
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#include <string>
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#include <iostream>
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#include <numeric>
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#include <png.h>
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#include <cstring>
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#include "qrgen.h"
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using namespace std;
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extern "C"{
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static int casesensitive = 0;
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static int eightbit = 0;
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static int version = 0;
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static int size = 8;
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static int margin = 5;
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static int dpi = 128;
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static int structured = 0;
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static int rle = 0;
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static int micro = 0;
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static QRecLevel level = QR_ECLEVEL_L;
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static QRencodeMode hint = QR_MODE_8;
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static unsigned int fg_color[4] = {0, 0, 0, 255};
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static unsigned int bg_color[4] = {255, 255, 255, 255};
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// int main()
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// {
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// const char * line = "The stuff you want to encode";
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// QRcode *myqrcode;
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// myqrcode = QRcode_encodeString(line, 4, QR_ECLEVEL_H, QR_MODE_8,1);
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// writePNG(myqrcode,"filename.png");
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// QRcode_free(myqrcode);
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// return 0;
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// }
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void qr_to_png(const char *qrstring,const char *outfile){
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QRcode *myqrcode;
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myqrcode = QRcode_encodeString(qrstring, 4, QR_ECLEVEL_H, QR_MODE_8,1);
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writePNG(myqrcode,outfile);
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QRcode_free(myqrcode);
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}
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static int writePNG(QRcode *qrcode, const char *outfile)
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{
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static FILE *fp; // avoid clobbering by setjmp.
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png_structp png_ptr;
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png_infop info_ptr;
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png_colorp palette;
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png_byte alpha_values[2];
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unsigned char *row, *p, *q;
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int x, y, xx, yy, bit;
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int realwidth;
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realwidth = (qrcode->width + margin * 2) * size;
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row = (unsigned char *)malloc((realwidth + 7) / 8);
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if(row == NULL) {
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fprintf(stderr, "Failed to allocate memory.\n");
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exit(EXIT_FAILURE);
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}
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if(outfile[0] == '-' && outfile[1] == '\0') {
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fp = stdout;
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} else {
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fp = fopen(outfile, "wb");
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if(fp == NULL) {
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fprintf(stderr, "Failed to create file: %s\n", outfile);
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perror(NULL);
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exit(EXIT_FAILURE);
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}
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}
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png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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if(png_ptr == NULL) {
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fprintf(stderr, "Failed to initialize PNG writer.\n");
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exit(EXIT_FAILURE);
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}
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info_ptr = png_create_info_struct(png_ptr);
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if(info_ptr == NULL) {
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fprintf(stderr, "Failed to initialize PNG write.\n");
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exit(EXIT_FAILURE);
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}
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if(setjmp(png_jmpbuf(png_ptr))) {
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png_destroy_write_struct(&png_ptr, &info_ptr);
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fprintf(stderr, "Failed to write PNG image.\n");
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exit(EXIT_FAILURE);
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}
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palette = (png_colorp) malloc(sizeof(png_color) * 2);
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if(palette == NULL) {
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fprintf(stderr, "Failed to allocate memory.\n");
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exit(EXIT_FAILURE);
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}
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palette[0].red = fg_color[0];
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palette[0].green = fg_color[1];
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palette[0].blue = fg_color[2];
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palette[1].red = bg_color[0];
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palette[1].green = bg_color[1];
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palette[1].blue = bg_color[2];
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alpha_values[0] = fg_color[3];
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alpha_values[1] = bg_color[3];
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png_set_PLTE(png_ptr, info_ptr, palette, 2);
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png_set_tRNS(png_ptr, info_ptr, alpha_values, 2, NULL);
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png_init_io(png_ptr, fp);
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png_set_IHDR(png_ptr, info_ptr,
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realwidth, realwidth,
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1,
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PNG_COLOR_TYPE_PALETTE,
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PNG_INTERLACE_NONE,
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PNG_COMPRESSION_TYPE_DEFAULT,
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PNG_FILTER_TYPE_DEFAULT);
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png_set_pHYs(png_ptr, info_ptr,
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dpi * INCHES_PER_METER,
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dpi * INCHES_PER_METER,
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PNG_RESOLUTION_METER);
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png_write_info(png_ptr, info_ptr);
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/* top margin */
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memset(row, 0xff, (realwidth + 7) / 8);
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for(y=0; y<margin * size; y++) {
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png_write_row(png_ptr, row);
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}
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/* data */
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p = qrcode->data;
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for(y=0; y<qrcode->width; y++) {
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bit = 7;
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memset(row, 0xff, (realwidth + 7) / 8);
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q = row;
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q += margin * size / 8;
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bit = 7 - (margin * size % 8);
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for(x=0; x<qrcode->width; x++) {
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for(xx=0; xx<size; xx++) {
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*q ^= (*p & 1) << bit;
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bit--;
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if(bit < 0) {
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q++;
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bit = 7;
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}
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}
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p++;
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}
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for(yy=0; yy<size; yy++) {
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png_write_row(png_ptr, row);
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}
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}
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/* bottom margin */
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memset(row, 0xff, (realwidth + 7) / 8);
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for(y=0; y<margin * size; y++) {
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png_write_row(png_ptr, row);
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}
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png_write_end(png_ptr, info_ptr);
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png_destroy_write_struct(&png_ptr, &info_ptr);
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fclose(fp);
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free(row);
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free(palette);
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return 0;
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}
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}
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52
src/ui/qrgen.h
Normal file
52
src/ui/qrgen.h
Normal file
@ -0,0 +1,52 @@
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//
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// Created by lakinduakash on 18/10/21.
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//
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/*
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Copyright (c) 2021, lakinduaksh
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef WIHOTSPOT_QRGEN_H
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#define WIHOTSPOT_QRGEN_H
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#include <qrencode.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define INCHES_PER_METER (100.0/2.54)
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static int writePNG(QRcode *qrcode, const char *outfile);
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void qr_to_png(const char *qrstring,const char *outfile);
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#ifdef __cplusplus
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}
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#endif
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#endif //WIHOTSPOT_QRGEN_H
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