1 324891a5 2006-06-25 devnull #include <u.h>
 2 324891a5 2006-06-25 devnull #include <libc.h>
 3 324891a5 2006-06-25 devnull #include <draw.h>
 4 324891a5 2006-06-25 devnull #include <memdraw.h>
 5 324891a5 2006-06-25 devnull #include <memlayer.h>
 6 324891a5 2006-06-25 devnull 
 7 324891a5 2006-06-25 devnull void
 8 324891a5 2006-06-25 devnull memldelete(Memimage *i)
 9 324891a5 2006-06-25 devnull {
10 324891a5 2006-06-25 devnull 	Memscreen *s;
11 324891a5 2006-06-25 devnull 	Memlayer *l;
12 324891a5 2006-06-25 devnull 
13 324891a5 2006-06-25 devnull 	l = i->layer;
14 324891a5 2006-06-25 devnull 	/* free backing store and disconnect refresh, to make pushback fast */
15 324891a5 2006-06-25 devnull 	freememimage(l->save);
16 324891a5 2006-06-25 devnull 	l->save = nil;
17 324891a5 2006-06-25 devnull 	l->refreshptr = nil;
18 324891a5 2006-06-25 devnull 	memltorear(i);
19 324891a5 2006-06-25 devnull 
20 324891a5 2006-06-25 devnull 	/* window is now the rearmost;  clean up screen structures and deallocate */
21 324891a5 2006-06-25 devnull 	s = i->layer->screen;
22 324891a5 2006-06-25 devnull 	if(s->fill){
23 324891a5 2006-06-25 devnull 		i->clipr = i->r;
24 324891a5 2006-06-25 devnull 		memdraw(i, i->r, s->fill, i->r.min, nil, i->r.min, S);
25 324891a5 2006-06-25 devnull 	}
26 324891a5 2006-06-25 devnull 	if(l->front){
27 324891a5 2006-06-25 devnull 		l->front->layer->rear = nil;
28 324891a5 2006-06-25 devnull 		s->rearmost = l->front;
29 324891a5 2006-06-25 devnull 	}else{
30 324891a5 2006-06-25 devnull 		s->frontmost = nil;
31 324891a5 2006-06-25 devnull 		s->rearmost = nil;
32 324891a5 2006-06-25 devnull 	}
33 324891a5 2006-06-25 devnull 	free(l);
34 324891a5 2006-06-25 devnull 	freememimage(i);
35 324891a5 2006-06-25 devnull }
36 324891a5 2006-06-25 devnull 
37 324891a5 2006-06-25 devnull /*
38 324891a5 2006-06-25 devnull  * Just free the data structures, don't do graphics
39 324891a5 2006-06-25 devnull  */
40 324891a5 2006-06-25 devnull void
41 324891a5 2006-06-25 devnull memlfree(Memimage *i)
42 324891a5 2006-06-25 devnull {
43 324891a5 2006-06-25 devnull 	Memlayer *l;
44 324891a5 2006-06-25 devnull 
45 324891a5 2006-06-25 devnull 	l = i->layer;
46 324891a5 2006-06-25 devnull 	freememimage(l->save);
47 324891a5 2006-06-25 devnull 	free(l);
48 324891a5 2006-06-25 devnull 	freememimage(i);
49 324891a5 2006-06-25 devnull }
50 324891a5 2006-06-25 devnull 
51 324891a5 2006-06-25 devnull void
52 324891a5 2006-06-25 devnull _memlsetclear(Memscreen *s)
53 324891a5 2006-06-25 devnull {
54 324891a5 2006-06-25 devnull 	Memimage *i, *j;
55 324891a5 2006-06-25 devnull 	Memlayer *l;
56 324891a5 2006-06-25 devnull 
57 324891a5 2006-06-25 devnull 	for(i=s->rearmost; i; i=i->layer->front){
58 324891a5 2006-06-25 devnull 		l = i->layer;
59 324891a5 2006-06-25 devnull 		l->clear = rectinrect(l->screenr, l->screen->image->clipr);
60 324891a5 2006-06-25 devnull 		if(l->clear)
61 324891a5 2006-06-25 devnull 			for(j=l->front; j; j=j->layer->front)
62 324891a5 2006-06-25 devnull 				if(rectXrect(l->screenr, j->layer->screenr)){
63 324891a5 2006-06-25 devnull 					l->clear = 0;
64 324891a5 2006-06-25 devnull 					break;
65 324891a5 2006-06-25 devnull 				}
66 324891a5 2006-06-25 devnull 	}
67 324891a5 2006-06-25 devnull }