Skip to content

Commit

Permalink
Add new image type PIC
Browse files Browse the repository at this point in the history 
to generate QR codes for GNU pic(1), e.g.:
  % qrencode -t PIC "qrencode PIC test" \
      | groff -Tpdf -p -P-p3i,3i > qrcode.pdf
  • Loading branch information
@afh
afh committed Aug 12, 2023
1 parent 49980df commit 3fcbd05
Show file tree
Hide file tree
Showing 2 changed files with 84 additions and 10 deletions.
86 changes: 80 additions & 6 deletions qrenc.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -68,7 +68,8 @@ enum imageType {
ANSIUTF8_TYPE,
ANSI256UTF8_TYPE,
UTF8i_TYPE,
ANSIUTF8i_TYPE
ANSIUTF8i_TYPE,
PIC_TYPE
};

static enum imageType image_type = PNG_TYPE;
Expand Down Expand Up @@ -134,8 +135,8 @@ static void usage(int help, int longopt, int status)
" specify the width of the margins. (default=4 (2 for Micro QR)))\n\n"
" -d NUMBER, --dpi=NUMBER\n"
" specify the DPI of the generated PNG. (default=72)\n\n"
" -t {PNG,PNG32,EPS,SVG,XPM,ANSI,ANSI256,ASCII,ASCIIi,UTF8,UTF8i,ANSIUTF8,ANSIUTF8i,ANSI256UTF8},\n"
" --type={PNG,PNG32,EPS,SVG,XPM,ANSI,ANSI256,ASCII,ASCIIi,UTF8,UTF8i,ANSIUTF8,ANSIUTF8i,ANSI256UTF8}\n"
" -t {PNG,PNG32,EPS,PIC,SVG,XPM,ANSI,ANSI256,ASCII,ASCIIi,UTF8,UTF8i,ANSIUTF8,ANSIUTF8i,ANSI256UTF8},\n"
" --type={PNG,PNG32,EPS,PIC,SVG,XPM,ANSI,ANSI256,ASCII,ASCIIi,UTF8,UTF8i,ANSIUTF8,ANSIUTF8i,ANSI256UTF8}\n"
" specify the type of the generated image. (default=PNG)\n"
" If ASCII*, UTF8*, or ANSI* is specified, the image will be disp-\n"
" layed in the terminal by using text characters instead of gene-\n"
Expand All @@ -152,13 +153,13 @@ static void usage(int help, int longopt, int status)
" -M, --micro encode in a Micro QR Code.\n\n"
" --rle enable run-length encoding for SVG.\n\n"
" --svg-path\n"
" use single path to draw modules for SVG.\n\n"
" use single path to draw modules for SVG or PIC.\n\n"
" --inline only useful for SVG output, generates an SVG without the XML tag.\n\n"
" --foreground=RRGGBB[AA]\n"
" --background=RRGGBB[AA]\n"
" specify foreground/background color in hexadecimal notation.\n"
" 6-digit (RGB) or 8-digit (RGBA) form are supported.\n"
" Color output support available only in PNG, EPS and SVG.\n\n"
" Color output support available only in PNG, EPS, PIC and SVG.\n\n"
" --strict-version\n"
" disable automatic version number adjustment. If the input data is\n"
" too large for the specified version, the program exits with the\n"
Expand Down Expand Up @@ -196,7 +197,7 @@ static void usage(int help, int longopt, int status)
" -v NUMBER specify the minimum version of the symbol. (default=auto)\n"
" -m NUMBER specify the width of the margins. (default=4 (2 for Micro))\n"
" -d NUMBER specify the DPI of the generated PNG. (default=72)\n"
" -t {PNG,PNG32,EPS,SVG,XPM,ANSI,ANSI256,ASCII,ASCIIi,UTF8,UTF8i,ANSIUTF8,ANSIUTF8i,ANSI256UTF8}\n"
" -t {PNG,PNG32,EPS,PIC,SVG,XPM,ANSI,ANSI256,ASCII,ASCIIi,UTF8,UTF8i,ANSIUTF8,ANSIUTF8i,ANSI256UTF8}\n"
" specify the type of the generated image. (default=PNG)\n"
" -S make structured symbols. Version number must be specified with '-v'.\n"
" -k assume that the input text contains kanji (shift-jis).\n"
Expand Down Expand Up @@ -524,6 +525,71 @@ static int writeEPS(const QRcode *qrcode, const char *outfile)
return 0;
}

static void writePIC_drawModules(FILE *fp, int x, int y, int width, const char* col)
{
if(svg_path) {
fprintf(fp, "line left %d color \"%s\" at (%d,%d)\n", width, col, x, y);
} else {
fprintf(fp, "box width %d height 1 color \"%s\" at (%d,%d)\n", width, col, x, -y);
}
}

static int writePIC(const QRcode *qrcode, const char *outfile)
{
FILE *fp;
unsigned char *row, *p;
int x, y;
int symwidth;
float scale;
char fg[7], bg[7];

fp = openFile(outfile);

scale = dpi * INCHES_PER_METER / 100.0;

symwidth = qrcode->width + margin * 2;

snprintf(fg, 7, "%02x%02x%02x", fg_color[0], fg_color[1], fg_color[2]);
snprintf(bg, 7, "%02x%02x%02x", bg_color[0], bg_color[1], bg_color[2]);

/* PIC code start */
fputs(".PS ", fp);

/* Vanity remark */
fprintf(fp, "\\\" Created with qrencode %s (https://fukuchi.org/works/qrencode/index.html)\n", QRcode_APIVersionString());

fprintf(fp, ".defcolor qrpicfg rgb #%s\n", fg );
fprintf(fp, ".defcolor qrpicbg rgb #%s\n", bg );
if (svg_path) {
fputs( ".nop \\X'ps: exec 0 setlinecap'\\c\n", fp);
fputs( "linethick=3\n", fp );
}
fputs( "move down 0;move left 0\n", fp );

float symoffset = (qrcode->width - margin * 0.25) * 0.5;
fprintf( fp, "box width %d height %d color \"qrpicbg\" at (%f,%f)\n", symwidth, symwidth, symoffset, symoffset * ((svg_path) ? 1.0 : -1.0));

/* Write data */
p = qrcode->data;
for(y = 0; y < qrcode->width; y++) {
row = (p+(y*qrcode->width));

for(x = 0; x < qrcode->width; x++) {
if(*(row+x)&0x1) {
writePIC_drawModules(fp, x, y, 1, "qrpicfg");
}
}
}

fprintf( fp, "scale=%.f\n", scale );

/* Close PIC code */
fputs(".PE\n", fp);
fclose(fp);

return 0;
}

static void writeSVG_drawModules(FILE *fp, int x, int y, int width, const char* col, double opacity)
{
if(svg_path) {
Expand Down Expand Up @@ -1062,6 +1128,9 @@ static void qrencode(const unsigned char *intext, int length, const char *outfil
case EPS_TYPE:
writeEPS(qrcode, outfile);
break;
case PIC_TYPE:
writePIC(qrcode, outfile);
break;
case SVG_TYPE:
writeSVG(qrcode, outfile);
break;
Expand Down Expand Up @@ -1128,6 +1197,9 @@ static void qrencodeStructured(const unsigned char *intext, int length, const ch
case EPS_TYPE:
type_suffix = ".eps";
break;
case PIC_TYPE:
type_suffix = ".pic";
break;
case SVG_TYPE:
type_suffix = ".svg";
break;
Expand Down Expand Up @@ -1322,6 +1394,8 @@ int main(int argc, char **argv)
image_type = PNG_TYPE;
} else if(strcasecmp(optarg, "eps") == 0) {
image_type = EPS_TYPE;
} else if(strcasecmp(optarg, "pic") == 0) {
image_type = PIC_TYPE;
} else if(strcasecmp(optarg, "svg") == 0) {
image_type = SVG_TYPE;
} else if(strcasecmp(optarg, "xpm") == 0) {
Expand Down
8 changes: 4 additions & 4 deletions qrencode.1.in
View file
Original file line number Diff line number Diff line change
Expand Up @@ -43,10 +43,10 @@ specify the width of margin. (default=4)
specify the DPI of the generated PNG. (default=72)
.TP
.PD 0
.B \-t {PNG,PNG32,EPS,SVG,XPM,ANSI,ANSI256,ASCII,ASCIIi,UTF8,UTF8i,ANSIUTF8,ANSIUTF8i,ANSI256UTF8}
.B \-t {PNG,PNG32,EPS,PIC,SVG,XPM,ANSI,ANSI256,ASCII,ASCIIi,UTF8,UTF8i,ANSIUTF8,ANSIUTF8i,ANSI256UTF8}
.TP
.PD
.B \-\-type={PNG,PNG32,EPS,SVG,XPM,ANSI,ANSI256,ASCII,ASCIIi,UTF8,UTF8i,ANSIUTF8,ANSIUTF8i,ANSI256UTF8}
.B \-\-type={PNG,PNG32,EPS,PIC,SVG,XPM,ANSI,ANSI256,ASCII,ASCIIi,UTF8,UTF8i,ANSIUTF8,ANSIUTF8i,ANSI256UTF8}
specify the type of the generated image. (default=PNG)
.br
If ASCII*, UTF8*, or ANSI* is specified, the image will be displayed in the terminal by using
Expand Down Expand Up @@ -75,7 +75,7 @@ encode in a Micro QR Code. See MICRO QR CODE for more information.
enable run-length encoding for SVG.
.TP
.B \-\-svg-path
use single path to draw modules for SVG.
use single path to draw modules for SVG or PIC.
.TP
.B \-\-inline
only useful for SVG output, generates an SVG without the XML tag.
Expand All @@ -87,7 +87,7 @@ only useful for SVG output, generates an SVG without the XML tag.
.B \-\-background=RRGGBB[AA]
specify foreground/background color in hexadecimal notation.
6-digit (RGB) or 8-digit (RGBA) form are supported.
Color output support available only in PNG, EPS and SVG.
Color output support available only in PNG, EPS, PIC and SVG.
.TP
.B \-\-strict\-version
disable automatic version number adjustment. If the input data is
Expand Down

0 comments on commit 3fcbd05

Please sign in to comment.