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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "gd.h"
/* A neat little utility which adds freetype text to
existing JPEG images. Type annotate -h for instructions.
Thanks to Joel Dubiner for supporting this work. -TBB */
enum
{
left, center, right
};
int
main (int argc, char *argv[])
{
#ifndef HAVE_LIBFREETYPE
/* 2.0.12 */
fprintf (stderr, "annotate is not useful without freetype.\n"
"Install freetype, then './configure; make clean; make install'\n"
"the gd library again.\n");
return 1;
#else
gdImagePtr im;
char *iin, *iout;
FILE *in, *out;
char s[1024];
int bounds[8];
int lines = 1;
int color = gdTrueColor (0, 0, 0);
char font[1024];
int size = 12;
int align = left;
int x = 0, y = 0;
char *fontError;
strcpy (font, "times");
if (argc != 3)
{
fprintf (stderr, "Usage: annotate imagein.jpg imageout.jpg\n\n");
fprintf (stderr, "Standard input should consist of\n");
fprintf (stderr, "lines in the following formats:\n");
fprintf (stderr, "color r g b (0-255 each) [a (0-127, 0 is opaque)]\n");
fprintf (stderr, "font fontname\n");
fprintf (stderr, "size pointsize\n");
fprintf (stderr, "align (left|right|center)\n");
fprintf (stderr, "move x y\n");
fprintf (stderr, "text actual-output-text\n\n");
fprintf (stderr,
"If the file 'paris.ttf' exists in /usr/share/fonts/truetype or in a\n");
fprintf (stderr,
"location specified in the GDFONTPATH environment variable, 'font paris' is\n");
fprintf (stderr,
"sufficient. You may also specify the full, rooted path of a font file.\n");
exit (1);
}
iin = argv[1];
iout = argv[2];
in = fopen (iin, "rb");
if (!in)
{
fprintf (stderr, "Couldn't open %s\n", iin);
exit (2);
}
#ifdef HAVE_LIBJPEG
im = gdImageCreateFromJpeg (in);
#else
fprintf (stderr, "No JPEG library support available.\n");
#endif
fclose (in);
if (!im)
{
fprintf (stderr, "%s did not load properly\n", iin);
exit (3);
}
while (fgets (s, sizeof (s), stdin))
{
char *st;
char *text;
st = strtok (s, " \t\r\n");
if (!st)
{
/* Be nice about blank lines */
continue;
}
if (!strcmp (st, "font"))
{
char *st = strtok (0, " \t\r\n");
if (!st)
{
goto badLine;
}
strcpy (font, st);
}
else if (!strcmp (st, "align"))
{
char *st = strtok (0, " \t\r\n");
if (!st)
{
goto badLine;
}
if (!strcmp (st, "left"))
{
align = 0;
}
else if (!strcmp (st, "center"))
{
align = 1;
}
else if (!strcmp (st, "right"))
{
align = 2;
}
}
else if (!strcmp (st, "size"))
{
char *st = strtok (0, " \t\r\n");
if (!st)
{
goto badLine;
}
size = atoi (st);
}
else if (!strcmp (st, "color"))
{
char *st = strtok (0, "\r\n");
int r, g, b, a = 0;
if (!st)
{
goto badLine;
}
if (sscanf (st, "%d %d %d %d", &r, &g, &b, &a) < 3)
{
fprintf (stderr, "Bad color at line %d\n", lines);
exit (2);
}
color = gdTrueColorAlpha (r, g, b, a);
}
else if (!strcmp (st, "move"))
{
char *st = strtok (0, "\r\n");
if (!st)
{
goto badLine;
}
if (sscanf (st, "%d %d", &x, &y) != 2)
{
fprintf (stderr, "Missing coordinates at line %d\n", lines);
exit (3);
}
}
else if (!strcmp (st, "text"))
{
int rx = x;
text = strtok (0, "\r\n");
if (!text)
{
text = "";
}
gdImageStringFT (0, bounds, color, font, size, 0, x, y, text);
switch (align)
{
case left:
break;
case center:
rx -= (bounds[2] - bounds[0]) / 2;
break;
case right:
rx -= (bounds[2] - bounds[0]);
break;
}
fontError = gdImageStringFT (im, 0, color, font,
size, 0, rx, y, text);
if (fontError)
{
fprintf (stderr, "font error at line %d: %s\n", lines,
fontError);
exit (7);
}
y -= (bounds[7] - bounds[1]);
}
else
{
goto badLine;
}
lines++;
continue;
badLine:
fprintf (stderr, "Bad syntax, line %d\n", lines);
exit (4);
}
out = fopen (iout, "wb");
if (!out)
{
fprintf (stderr, "Cannot create %s\n", iout);
exit (5);
}
#ifdef HAVE_LIBJPEG
gdImageJpeg (im, out, 95);
#else
fprintf (stderr, "No JPEG library support available.\n");
#endif
gdImageDestroy (im);
fclose (out);
return 0;
#endif /* HAVE_LIBFREETYPE */
}
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