1 #include <u.h>
2 #include <libc.h>
3 #include <draw.h>
4 #include <event.h>
5 
6 void
7 usage(void)
8 {
9 	fprint(2, "usage: img [-W winsize] [file]\n");
10 	exits("usage");
11 }
12 
13 Image *image;
14 
15 void
16 eresized(int new)
17 {
18 	if(new && getwindow(display, Refnone) < 0)
19 		sysfatal("can't reattach to window: %r");
20 
21 	draw(screen, screen->r, display->white, nil, ZP);
22 	drawop(screen, screen->r, image, nil, image->r.min, S);
23 }
24 
25 void
26 main(int argc, char **argv)
27 {
28 	int fd;
29 	Event e;
30 
31 	ARGBEGIN{
32 	case 'W':
33 		winsize = EARGF(usage());
34 		break;
35 	default:
36 		usage();
37 	}ARGEND
38 
39 	if(argc > 1)
40 		usage();
41 
42 	if(argc == 1){
43 		if((fd = open(argv[0], OREAD)) < 0)
44 			sysfatal("open %s: %r");
45 	}else
46 		fd = 0;
47 
48 	if(initdraw(0, nil, nil) < 0)
49 		sysfatal("initdraw: %r");
50 
51 	if((image=readimage(display, fd, 0)) == nil)
52 		sysfatal("readimage: %r");
53 
54 	drawresizewindow(Rect(0,0,Dx(image->r),Dy(image->r)));
55 
56 	einit(Emouse|Ekeyboard);
57 	eresized(0);
58 	for(;;){
59 		switch(event(&e)){
60 		case Ekeyboard:
61 			if(e.kbdc == 'q' || e.kbdc == 0x7F)
62 				exits(nil);
63 			eresized(0);
64 			break;
65 		case Emouse:
66 			break;
67 		}
68 	}
69 }