1 b5990708 2003-09-30 devnull #include <u.h>
 2 b5990708 2003-09-30 devnull #include <libc.h>
 3 b5990708 2003-09-30 devnull #include <draw.h>
 4 b5990708 2003-09-30 devnull #include <mouse.h>
 5 b5990708 2003-09-30 devnull #include <frame.h>
 6 b5990708 2003-09-30 devnull 
 7 b5990708 2003-09-30 devnull #define	CHUNK	16
 8 b5990708 2003-09-30 devnull #define	ROUNDUP(n)	((n+CHUNK)&~(CHUNK-1))
 9 b5990708 2003-09-30 devnull 
10 b5990708 2003-09-30 devnull uchar *
11 b5990708 2003-09-30 devnull _frallocstr(Frame *f, unsigned n)
12 b5990708 2003-09-30 devnull {
13 b5990708 2003-09-30 devnull 	uchar *p;
14 b5990708 2003-09-30 devnull 
15 b5990708 2003-09-30 devnull 	p = malloc(ROUNDUP(n));
16 b5990708 2003-09-30 devnull 	if(p == 0)
17 b5990708 2003-09-30 devnull 		drawerror(f->display, "out of memory");
18 b5990708 2003-09-30 devnull 	return p;
19 b5990708 2003-09-30 devnull }
20 b5990708 2003-09-30 devnull 
21 b5990708 2003-09-30 devnull void
22 b5990708 2003-09-30 devnull _frinsure(Frame *f, int bn, unsigned n)
23 b5990708 2003-09-30 devnull {
24 b5990708 2003-09-30 devnull 	Frbox *b;
25 b5990708 2003-09-30 devnull 	uchar *p;
26 b5990708 2003-09-30 devnull 
27 b5990708 2003-09-30 devnull 	b = &f->box[bn];
28 b5990708 2003-09-30 devnull 	if(b->nrune < 0)
29 b5990708 2003-09-30 devnull 		drawerror(f->display, "_frinsure");
30 b5990708 2003-09-30 devnull 	if(ROUNDUP(b->nrune) > n)	/* > guarantees room for terminal NUL */
31 b5990708 2003-09-30 devnull 		return;
32 b5990708 2003-09-30 devnull 	p = _frallocstr(f, n);
33 b5990708 2003-09-30 devnull 	b = &f->box[bn];
34 b5990708 2003-09-30 devnull 	memmove(p, b->ptr, NBYTE(b)+1);
35 b5990708 2003-09-30 devnull 	free(b->ptr);
36 b5990708 2003-09-30 devnull 	b->ptr = p;
37 b5990708 2003-09-30 devnull }