#include
#include
#include
#include
#include
#include
#include
static int red = 0;
static int green = 0;
static int blue = 0;
void setupcolor(char *str);
int main(int argc, char *argv[]) {
FILE *pngout = {0};
gdImagePtr img;
int fgcol, bgcol;
char *str = NULL;
char *fname = NULL;
if(argc != 5) {
fprintf(stderr, "Usage: ./imstr \"STRING\" FFFFFF 000000 image.png\n");
return 1;
} else {
str = argv[1];
img = gdImageCreate((gdFontGiant->w * strlen(str)) + 2, gdFontGiant->h + 2);
setupcolor(argv[2]);
bgcol = gdImageColorAllocate(img, red, green, blue);
setupcolor(argv[3]);
fgcol = gdImageColorAllocate(img, red, green, blue);
fname = argv[4];
}
gdImageString(img, gdFontGiant,
gdImageSX(img) / 2 - (strlen(str) * gdFontGiant->w / 2),
gdImageSY(img) / 2 - gdFontGiant->h / 2, str, fgcol);
if((pngout = fopen(fname, "w")) == NULL)
error(1, 0, "Error - fopen(): %s", fname);
else {
gdImagePng(img, pngout);
fclose(pngout);
}
gdImageDestroy(img);
return 0;
}
void setupcolor(char *str) {
char r[3] = {0};
char g[3] = {0};
char b[3] = {0};
char *ptr = NULL;
if(strlen(str) != 6)
error(1, 0, "Error - Invalid hex color length: %s", str);
for(ptr = str; *ptr; ptr++)
if(!isxdigit(*ptr))
error(1, 0, "Error - Non hexdigit: %s", str);
else if(isupper(*ptr))
*ptr = tolower(*ptr);
r[0] = str[0], g[0] = str[2], b[0] = str[4];
r[1] = str[1], g[1] = str[3], b[1] = str[5];
r[2] = '\0', g[2] = '\0', b[2] = '\0';
sscanf(r, "%X", &red);
sscanf(g, "%X", &green);
sscanf(b, "%X", &blue);
return;
}