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 	flushimage(display, 1);
24 }
25 
26 void
27 main(int argc, char **argv)
28 {
29 	int fd;
30 	char *label;
31 	Event e;
32 
33 	ARGBEGIN{
34 	case 'W':
35 		winsize = EARGF(usage());
36 		break;
37 	default:
38 		usage();
39 	}ARGEND
40 
41 	if(argc > 1)
42 		usage();
43 
44 	if(argc == 1){
45 		if((fd = open(argv[0], OREAD)) < 0)
46 			sysfatal("open %s: %r");
47 		label = argv[0];
48 	}else{
49 		fd = 0;
50 		label = nil;
51 	}
52 
53 	if(initdraw(0, nil, label) < 0)
54 		sysfatal("initdraw: %r");
55 
56 	if((image=readimage(display, fd, 0)) == nil)
57 		sysfatal("readimage: %r");
58 
59 	if(winsize == nil)
60 		drawresizewindow(Rect(0,0,Dx(image->r),Dy(image->r)));
61 
62 	einit(Emouse|Ekeyboard);
63 	eresized(0);
64 	for(;;){
65 		switch(event(&e)){
66 		case Ekeyboard:
67 			if(e.kbdc == 'q' || e.kbdc == 0x7F)
68 				exits(nil);
69 			break;
70 		case Emouse:
71 			break;
72 		}
73 	}
74 }