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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
*/
#include <stdio.h>
#include <stdlib.h>
#include "gd.h"
#include "gdhelpers.h"
#ifndef HAVE_XPM
gdImagePtr gdImageCreateFromXpm(char *filename)
{
fprintf(stderr,"libgd was not built with xpm support\n");
return(NULL);
}
#else
#include "xpm.h"
gdImagePtr gdImageCreateFromXpm(char *filename)
{
XpmInfo info;
XpmImage image;
int i,j,k,number;
char buf[5];
gdImagePtr im = 0;
char *apixel;
int *pointer;
int red=0,green=0,blue=0,color=0;
int *colors;
int ret;
ret = XpmReadFileToXpmImage(filename,&image,&info);
if (ret != XpmSuccess)
return 0;
if (!(im = gdImageCreate(image.width, image.height)))
return 0;
number = image.ncolors;
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");
}
apixel = (char *)gdMalloc(image.cpp+1);
if (apixel == NULL)
return(0);
apixel[image.cpp] = '\0';
pointer = 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(apixel);
gdFree(colors);
return(im);
}
#endif
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