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 static Rune empty[] = { 0 };
  6 76193d7c 2003-09-30 devnull int
  7 76193d7c 2003-09-30 devnull _stringnwidth(Font *f, char *s, Rune *r, int len)
  8 76193d7c 2003-09-30 devnull {
  9 76193d7c 2003-09-30 devnull 	int wid, twid, n, max, l;
 10 76193d7c 2003-09-30 devnull 	char *name;
 11 76193d7c 2003-09-30 devnull 	enum { Max = 64 };
 12 76193d7c 2003-09-30 devnull 	ushort cbuf[Max];
 13 76193d7c 2003-09-30 devnull 	Rune rune, **rptr;
 14 76193d7c 2003-09-30 devnull 	char *subfontname, **sptr;
 15 76193d7c 2003-09-30 devnull 	Font *def;
 16 b2f9ee0d 2005-07-13 devnull 	Subfont *sf;
 17 76193d7c 2003-09-30 devnull 
 18 76193d7c 2003-09-30 devnull 	if(s == nil){
 19 76193d7c 2003-09-30 devnull 		s = "";
 20 76193d7c 2003-09-30 devnull 		sptr = nil;
 21 76193d7c 2003-09-30 devnull 	}else
 22 76193d7c 2003-09-30 devnull 		sptr = &s;
 23 76193d7c 2003-09-30 devnull 	if(r == nil){
 24 76193d7c 2003-09-30 devnull 		r = empty;
 25 76193d7c 2003-09-30 devnull 		rptr = nil;
 26 76193d7c 2003-09-30 devnull 	}else
 27 76193d7c 2003-09-30 devnull 		rptr = &r;
 28 76193d7c 2003-09-30 devnull 	twid = 0;
 29 4e206880 2004-04-25 devnull 	while(len>0 && (*s || *r)){
 30 76193d7c 2003-09-30 devnull 		max = Max;
 31 76193d7c 2003-09-30 devnull 		if(len < max)
 32 76193d7c 2003-09-30 devnull 			max = len;
 33 76193d7c 2003-09-30 devnull 		n = 0;
 34 b2f9ee0d 2005-07-13 devnull 		sf = nil;
 35 76193d7c 2003-09-30 devnull 		while((l = cachechars(f, sptr, rptr, cbuf, max, &wid, &subfontname)) <= 0){
 36 76193d7c 2003-09-30 devnull 			if(++n > 10){
 37 76193d7c 2003-09-30 devnull 				if(*r)
 38 76193d7c 2003-09-30 devnull 					rune = *r;
 39 76193d7c 2003-09-30 devnull 				else
 40 76193d7c 2003-09-30 devnull 					chartorune(&rune, s);
 41 76193d7c 2003-09-30 devnull 				if(f->name != nil)
 42 76193d7c 2003-09-30 devnull 					name = f->name;
 43 76193d7c 2003-09-30 devnull 				else
 44 76193d7c 2003-09-30 devnull 					name = "unnamed font";
 45 b2f9ee0d 2005-07-13 devnull 				freesubfont(sf);
 46 76193d7c 2003-09-30 devnull 				fprint(2, "stringwidth: bad character set for rune 0x%.4ux in %s\n", rune, name);
 47 76193d7c 2003-09-30 devnull 				return twid;
 48 76193d7c 2003-09-30 devnull 			}
 49 76193d7c 2003-09-30 devnull 			if(subfontname){
 50 b2f9ee0d 2005-07-13 devnull 				freesubfont(sf);
 51 213fc4f6 2015-02-17 rsc 				if((sf=_getsubfont(f->display, subfontname)) == 0){
 52 b2f9ee0d 2005-07-13 devnull 					def = f->display ? f->display->defaultfont : nil;
 53 76193d7c 2003-09-30 devnull 					if(def && f!=def)
 54 76193d7c 2003-09-30 devnull 						f = def;
 55 76193d7c 2003-09-30 devnull 					else
 56 76193d7c 2003-09-30 devnull 						break;
 57 76193d7c 2003-09-30 devnull 				}
 58 fa325e9b 2020-01-10 cross 				/*
 59 b2f9ee0d 2005-07-13 devnull 				 * must not free sf until cachechars has found it in the cache
 60 b2f9ee0d 2005-07-13 devnull 				 * and picked up its own reference.
 61 b2f9ee0d 2005-07-13 devnull 				 */
 62 76193d7c 2003-09-30 devnull 			}
 63 76193d7c 2003-09-30 devnull 		}
 64 b2f9ee0d 2005-07-13 devnull 		freesubfont(sf);
 65 76193d7c 2003-09-30 devnull 		agefont(f);
 66 76193d7c 2003-09-30 devnull 		twid += wid;
 67 76193d7c 2003-09-30 devnull 		len -= l;
 68 76193d7c 2003-09-30 devnull 	}
 69 76193d7c 2003-09-30 devnull 	return twid;
 70 76193d7c 2003-09-30 devnull }
 71 76193d7c 2003-09-30 devnull 
 72 76193d7c 2003-09-30 devnull int
 73 76193d7c 2003-09-30 devnull stringnwidth(Font *f, char *s, int len)
 74 76193d7c 2003-09-30 devnull {
 75 76193d7c 2003-09-30 devnull 	return _stringnwidth(f, s, nil, len);
 76 76193d7c 2003-09-30 devnull }
 77 76193d7c 2003-09-30 devnull 
 78 76193d7c 2003-09-30 devnull int
 79 76193d7c 2003-09-30 devnull stringwidth(Font *f, char *s)
 80 76193d7c 2003-09-30 devnull {
 81 76193d7c 2003-09-30 devnull 	return _stringnwidth(f, s, nil, 1<<24);
 82 76193d7c 2003-09-30 devnull }
 83 76193d7c 2003-09-30 devnull 
 84 76193d7c 2003-09-30 devnull Point
 85 76193d7c 2003-09-30 devnull stringsize(Font *f, char *s)
 86 76193d7c 2003-09-30 devnull {
 87 76193d7c 2003-09-30 devnull 	return Pt(_stringnwidth(f, s, nil, 1<<24), f->height);
 88 76193d7c 2003-09-30 devnull }
 89 76193d7c 2003-09-30 devnull 
 90 76193d7c 2003-09-30 devnull int
 91 76193d7c 2003-09-30 devnull runestringnwidth(Font *f, Rune *r, int len)
 92 76193d7c 2003-09-30 devnull {
 93 76193d7c 2003-09-30 devnull 	return _stringnwidth(f, nil, r, len);
 94 76193d7c 2003-09-30 devnull }
 95 76193d7c 2003-09-30 devnull 
 96 76193d7c 2003-09-30 devnull int
 97 76193d7c 2003-09-30 devnull runestringwidth(Font *f, Rune *r)
 98 76193d7c 2003-09-30 devnull {
 99 76193d7c 2003-09-30 devnull 	return _stringnwidth(f, nil, r, 1<<24);
100 76193d7c 2003-09-30 devnull }
101 76193d7c 2003-09-30 devnull 
102 76193d7c 2003-09-30 devnull Point
103 76193d7c 2003-09-30 devnull runestringsize(Font *f, Rune *r)
104 76193d7c 2003-09-30 devnull {
105 76193d7c 2003-09-30 devnull 	return Pt(_stringnwidth(f, nil, r, 1<<24), f->height);
106 76193d7c 2003-09-30 devnull }