mirror of
https://github.com/9fans/plan9port.git
synced 2025-01-27 11:52:03 +00:00
97 lines
1.6 KiB
C
97 lines
1.6 KiB
C
#include <u.h>
|
|
#include <libc.h>
|
|
#include <draw.h>
|
|
|
|
static Rune empty[] = { 0 };
|
|
int
|
|
_stringnwidth(Font *f, char *s, Rune *r, int len)
|
|
{
|
|
int wid, twid, n, max, l;
|
|
char *name;
|
|
enum { Max = 64 };
|
|
ushort cbuf[Max];
|
|
Rune rune, **rptr;
|
|
char *subfontname, **sptr;
|
|
Font *def;
|
|
|
|
if(s == nil){
|
|
s = "";
|
|
sptr = nil;
|
|
}else
|
|
sptr = &s;
|
|
if(r == nil){
|
|
r = empty;
|
|
rptr = nil;
|
|
}else
|
|
rptr = &r;
|
|
twid = 0;
|
|
while(len && (*s || *r)){
|
|
max = Max;
|
|
if(len < max)
|
|
max = len;
|
|
n = 0;
|
|
while((l = cachechars(f, sptr, rptr, cbuf, max, &wid, &subfontname)) <= 0){
|
|
if(++n > 10){
|
|
if(*r)
|
|
rune = *r;
|
|
else
|
|
chartorune(&rune, s);
|
|
if(f->name != nil)
|
|
name = f->name;
|
|
else
|
|
name = "unnamed font";
|
|
fprint(2, "stringwidth: bad character set for rune 0x%.4ux in %s\n", rune, name);
|
|
return twid;
|
|
}
|
|
if(subfontname){
|
|
if(_getsubfont(f->display, subfontname) == 0){
|
|
def = f->display->defaultfont;
|
|
if(def && f!=def)
|
|
f = def;
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
agefont(f);
|
|
twid += wid;
|
|
len -= l;
|
|
}
|
|
return twid;
|
|
}
|
|
|
|
int
|
|
stringnwidth(Font *f, char *s, int len)
|
|
{
|
|
return _stringnwidth(f, s, nil, len);
|
|
}
|
|
|
|
int
|
|
stringwidth(Font *f, char *s)
|
|
{
|
|
return _stringnwidth(f, s, nil, 1<<24);
|
|
}
|
|
|
|
Point
|
|
stringsize(Font *f, char *s)
|
|
{
|
|
return Pt(_stringnwidth(f, s, nil, 1<<24), f->height);
|
|
}
|
|
|
|
int
|
|
runestringnwidth(Font *f, Rune *r, int len)
|
|
{
|
|
return _stringnwidth(f, nil, r, len);
|
|
}
|
|
|
|
int
|
|
runestringwidth(Font *f, Rune *r)
|
|
{
|
|
return _stringnwidth(f, nil, r, 1<<24);
|
|
}
|
|
|
|
Point
|
|
runestringsize(Font *f, Rune *r)
|
|
{
|
|
return Pt(_stringnwidth(f, nil, r, 1<<24), f->height);
|
|
}
|