1 76193d7c 2003-09-30 devnull #include <u.h>
 2 76193d7c 2003-09-30 devnull #include <libc.h>
 3 76193d7c 2003-09-30 devnull #include <draw.h>
 4 76193d7c 2003-09-30 devnull 
 5 76193d7c 2003-09-30 devnull int
 6 76193d7c 2003-09-30 devnull unloadimage(Image *i, Rectangle r, uchar *data, int ndata)
 7 76193d7c 2003-09-30 devnull {
 8 76193d7c 2003-09-30 devnull 	int bpl, n, ntot, dy;
 9 76193d7c 2003-09-30 devnull 	uchar *a;
10 76193d7c 2003-09-30 devnull 	Display *d;
11 76193d7c 2003-09-30 devnull 
12 76193d7c 2003-09-30 devnull 	if(!rectinrect(r, i->r)){
13 76193d7c 2003-09-30 devnull 		werrstr("unloadimage: bad rectangle");
14 76193d7c 2003-09-30 devnull 		return -1;
15 76193d7c 2003-09-30 devnull 	}
16 76193d7c 2003-09-30 devnull 	bpl = bytesperline(r, i->depth);
17 76193d7c 2003-09-30 devnull 	if(ndata < bpl*Dy(r)){
18 76193d7c 2003-09-30 devnull 		werrstr("unloadimage: buffer too small");
19 76193d7c 2003-09-30 devnull 		return -1;
20 76193d7c 2003-09-30 devnull 	}
21 76193d7c 2003-09-30 devnull 
22 76193d7c 2003-09-30 devnull 	d = i->display;
23 76193d7c 2003-09-30 devnull 	flushimage(d, 0);	/* make sure subsequent flush is for us only */
24 76193d7c 2003-09-30 devnull 	ntot = 0;
25 76193d7c 2003-09-30 devnull 	while(r.min.y < r.max.y){
26 76193d7c 2003-09-30 devnull 		a = bufimage(d, 1+4+4*4);
27 76193d7c 2003-09-30 devnull 		if(a == 0){
28 76193d7c 2003-09-30 devnull 			werrstr("unloadimage: %r");
29 76193d7c 2003-09-30 devnull 			return -1;
30 76193d7c 2003-09-30 devnull 		}
31 76193d7c 2003-09-30 devnull 		dy = 8000/bpl;
32 76193d7c 2003-09-30 devnull 		if(dy <= 0){
33 76193d7c 2003-09-30 devnull 			werrstr("unloadimage: image too wide");
34 76193d7c 2003-09-30 devnull 			return -1;
35 76193d7c 2003-09-30 devnull 		}
36 76193d7c 2003-09-30 devnull 		if(dy > Dy(r))
37 76193d7c 2003-09-30 devnull 			dy = Dy(r);
38 76193d7c 2003-09-30 devnull 		a[0] = 'r';
39 76193d7c 2003-09-30 devnull 		BPLONG(a+1, i->id);
40 76193d7c 2003-09-30 devnull 		BPLONG(a+5, r.min.x);
41 76193d7c 2003-09-30 devnull 		BPLONG(a+9, r.min.y);
42 76193d7c 2003-09-30 devnull 		BPLONG(a+13, r.max.x);
43 76193d7c 2003-09-30 devnull 		BPLONG(a+17, r.min.y+dy);
44 76193d7c 2003-09-30 devnull 		if(flushimage(d, 0) < 0)
45 76193d7c 2003-09-30 devnull 			return -1;
46 74dc60da 2006-06-25 devnull 		n = _displayrddraw(d, data+ntot, ndata-ntot);
47 76193d7c 2003-09-30 devnull 		if(n < 0)
48 76193d7c 2003-09-30 devnull 			return n;
49 76193d7c 2003-09-30 devnull 		ntot += n;
50 76193d7c 2003-09-30 devnull 		r.min.y += dy;
51 76193d7c 2003-09-30 devnull 	}
52 76193d7c 2003-09-30 devnull 	return ntot;
53 76193d7c 2003-09-30 devnull }