1
2 /*
3 add ability to load xpm files to gd, requires the xpm
4 library.
5 Caolan.McNamara@ul.ie
6 http://www.csn.ul.ie/~caolan
7 */
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include "gd.h"
12 #include "gdhelpers.h"
13
14 #ifdef HAVE_XPM
15
16 #include <X11/xpm.h>
17
gdImageCreateFromXpm(char * filename)18 gdImagePtr gdImageCreateFromXpm (char *filename)
19 {
20 XpmInfo info;
21 XpmImage image;
22 int i, j, k, number;
23 char buf[5];
24 gdImagePtr im = 0;
25 int *pointer;
26 int red = 0, green = 0, blue = 0;
27 int *colors;
28 int ret;
29
30 ret = XpmReadFileToXpmImage(filename, &image, &info);
31 if (ret != XpmSuccess) {
32 return 0;
33 }
34 number = image.ncolors;
35 for(i = 0; i < number; i++) {
36 if (!image.colorTable[i].c_color) {
37 goto done;
38 }
39 }
40
41 if (!(im = gdImageCreate(image.width, image.height))) {
42 goto done;
43 }
44
45 colors = (int *) safe_emalloc(number, sizeof(int), 0);
46 for (i = 0; i < number; i++) {
47 switch (strlen (image.colorTable[i].c_color)) {
48 case 4:
49 buf[1] = '\0';
50 buf[0] = image.colorTable[i].c_color[1];
51 red = strtol(buf, NULL, 16);
52
53 buf[0] = image.colorTable[i].c_color[2];
54 green = strtol(buf, NULL, 16);
55
56 buf[0] = image.colorTable[i].c_color[3];
57 blue = strtol(buf, NULL, 16);
58 break;
59
60 case 7:
61 buf[2] = '\0';
62 buf[0] = image.colorTable[i].c_color[1];
63 buf[1] = image.colorTable[i].c_color[2];
64 red = strtol(buf, NULL, 16);
65
66 buf[0] = image.colorTable[i].c_color[3];
67 buf[1] = image.colorTable[i].c_color[4];
68 green = strtol(buf, NULL, 16);
69
70 buf[0] = image.colorTable[i].c_color[5];
71 buf[1] = image.colorTable[i].c_color[6];
72 blue = strtol(buf, NULL, 16);
73 break;
74
75 case 10:
76 buf[3] = '\0';
77 buf[0] = image.colorTable[i].c_color[1];
78 buf[1] = image.colorTable[i].c_color[2];
79 buf[2] = image.colorTable[i].c_color[3];
80 red = strtol(buf, NULL, 16);
81 red /= 64;
82
83 buf[0] = image.colorTable[i].c_color[4];
84 buf[1] = image.colorTable[i].c_color[5];
85 buf[2] = image.colorTable[i].c_color[6];
86 green = strtol(buf, NULL, 16);
87 green /= 64;
88
89 buf[0] = image.colorTable[i].c_color[7];
90 buf[1] = image.colorTable[i].c_color[8];
91 buf[2] = image.colorTable[i].c_color[9];
92 blue = strtol(buf, NULL, 16);
93 blue /= 64;
94 break;
95
96 case 13:
97 buf[4] = '\0';
98 buf[0] = image.colorTable[i].c_color[1];
99 buf[1] = image.colorTable[i].c_color[2];
100 buf[2] = image.colorTable[i].c_color[3];
101 buf[3] = image.colorTable[i].c_color[4];
102 red = strtol(buf, NULL, 16);
103 red /= 256;
104
105 buf[0] = image.colorTable[i].c_color[5];
106 buf[1] = image.colorTable[i].c_color[6];
107 buf[2] = image.colorTable[i].c_color[7];
108 buf[3] = image.colorTable[i].c_color[8];
109 green = strtol(buf, NULL, 16);
110 green /= 256;
111
112 buf[0] = image.colorTable[i].c_color[9];
113 buf[1] = image.colorTable[i].c_color[10];
114 buf[2] = image.colorTable[i].c_color[11];
115 buf[3] = image.colorTable[i].c_color[12];
116 blue = strtol(buf, NULL, 16);
117 blue /= 256;
118 break;
119 }
120
121
122 colors[i] = gdImageColorResolve(im, red, green, blue);
123 }
124
125 pointer = (int *) image.data;
126 for (i = 0; i < image.height; i++) {
127 for (j = 0; j < image.width; j++) {
128 k = *pointer++;
129 gdImageSetPixel(im, j, i, colors[k]);
130 }
131 }
132
133 gdFree(colors);
134 done:
135 XpmFreeXpmImage(&image);
136 XpmFreeXpmInfo(&info);
137 return im;
138 }
139 #endif
140
