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/*
add ability to load xpm files to gd, requires the xpm
library.
Caolan.McNamara@ul.ie
http://www.csn.ul.ie/~caolan
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "gd.h"
#include "gdhelpers.h"
#ifndef HAVE_LIBXPM
BGD_DECLARE(gdImagePtr) gdImageCreateFromXpm (char *filename)
{
fprintf (stderr, "libgd was not built with xpm support\n");
return (NULL);
}
#else
#include <X11/xpm.h>
BGD_DECLARE(gdImagePtr) gdImageCreateFromXpm (char *filename)
{
XpmInfo info;
XpmImage image;
int i, j, k, number;
char buf[5];
gdImagePtr im = 0;
int *pointer;
int red = 0, green = 0, blue = 0;
int *colors;
int ret;
ret = XpmReadFileToXpmImage (filename, &image, &info);
if (ret != XpmSuccess)
return 0;
number = image.ncolors;
for(i = 0; i < number; i++) {
if (!image.colorTable[i].c_color) {
return 0;
}
}
if (!(im = gdImageCreate (image.width, image.height)))
return 0;
if (overflow2(sizeof (int), number)) {
return 0;
}
colors = (int *) gdMalloc (sizeof (int) * number);
if (colors == NULL)
return (0);
for (i = 0; i < number; i++)
{
switch (strlen (image.colorTable[i].c_color))
{
case 4:
buf[1] = '\0';
buf[0] = image.colorTable[i].c_color[1];
red = strtol (buf, NULL, 16);
buf[0] = image.colorTable[i].c_color[3];
green = strtol (buf, NULL, 16);
buf[0] = image.colorTable[i].c_color[5];
blue = strtol (buf, NULL, 16);
break;
case 7:
buf[2] = '\0';
buf[0] = image.colorTable[i].c_color[1];
buf[1] = image.colorTable[i].c_color[2];
red = strtol (buf, NULL, 16);
buf[0] = image.colorTable[i].c_color[3];
buf[1] = image.colorTable[i].c_color[4];
green = strtol (buf, NULL, 16);
buf[0] = image.colorTable[i].c_color[5];
buf[1] = image.colorTable[i].c_color[6];
blue = strtol (buf, NULL, 16);
break;
case 10:
buf[3] = '\0';
buf[0] = image.colorTable[i].c_color[1];
buf[1] = image.colorTable[i].c_color[2];
buf[2] = image.colorTable[i].c_color[3];
red = strtol (buf, NULL, 16);
red /= 64;
buf[0] = image.colorTable[i].c_color[4];
buf[1] = image.colorTable[i].c_color[5];
buf[2] = image.colorTable[i].c_color[6];
green = strtol (buf, NULL, 16);
green /= 64;
buf[0] = image.colorTable[i].c_color[7];
buf[1] = image.colorTable[i].c_color[8];
buf[2] = image.colorTable[i].c_color[9];
blue = strtol (buf, NULL, 16);
blue /= 64;
break;
case 13:
buf[4] = '\0';
buf[0] = image.colorTable[i].c_color[1];
buf[1] = image.colorTable[i].c_color[2];
buf[2] = image.colorTable[i].c_color[3];
buf[3] = image.colorTable[i].c_color[4];
red = strtol (buf, NULL, 16);
red /= 256;
buf[0] = image.colorTable[i].c_color[5];
buf[1] = image.colorTable[i].c_color[6];
buf[2] = image.colorTable[i].c_color[7];
buf[3] = image.colorTable[i].c_color[8];
green = strtol (buf, NULL, 16);
green /= 256;
buf[0] = image.colorTable[i].c_color[9];
buf[1] = image.colorTable[i].c_color[10];
buf[2] = image.colorTable[i].c_color[11];
buf[3] = image.colorTable[i].c_color[12];
blue = strtol (buf, NULL, 16);
blue /= 256;
break;
}
colors[i] = gdImageColorResolve (im, red, green, blue);
if (colors[i] == -1)
fprintf (stderr, "ARRRGH\n");
}
pointer = (int *) image.data;
for (i = 0; i < image.height; i++)
{
for (j = 0; j < image.width; j++)
{
k = *pointer++;
gdImageSetPixel (im, j, i, colors[k]);
}
}
gdFree (colors);
return (im);
}
#endif /* HAVE_LIBXPM */
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