shithub: tocursor

ref: e712b341a4b7ba5d7f9e6a52e8ef43d2e2c60bed
dir: /tocursor.c/

#include <u.h>
#include <libc.h>

void
main(int argc, char **argv)
{
	u32int b[5*12/4+16*16];
	uchar clr[16*16/8], set[16*16/8];
	int i;

	if(argc < 3){
		fprint(2, "usage: png -9t <cursor.png | %s OFFSETX OFFSETY >/dev/snarf\n", argv[0]);
		exits("usage");
	}

	if((i = readn(0, b, sizeof(b))) != sizeof(b))
		sysfatal("short read: %d < %d (not r8g8b8a8?)", i, sizeof(b));

	memset(clr, 0, sizeof(clr));
	memset(set, 0, sizeof(set));
	print("Cursor lol = {\n");
	print("\t{%s, %s},\n", argv[1], argv[2]);
	for(i = 0; i < 16*16; i++){
		if(b[15+i] == 0x000000ff)
			set[i/8] |= 1<<(7-i&7);
		else if(b[15+i] == 0xffffffff)
			clr[i/8] |= 1<<(7-i&7);
	}
	print("\t{");
	for(i = 0; i < sizeof(clr); i++){
		if(i > 0 && !(i % 8))
			print("\n\t ");
		print(" 0x%02x,", clr[i]);
	}
	print("\n\t},\n\t{");
	for(i = 0; i < sizeof(set); i++){
		if(i > 0 && !(i % 8))
			print("\n\t ");
		print(" 0x%02x,", set[i]);
	}
	print("\n\t},\n};\n");

	exits(nil);
}