ref: 4f5e576a621998ccd52de0236eea9090c637caae
dir: /sys/src/libdraw/subfontcache.c/
#include <u.h>
#include <libc.h>
#include <draw.h>
/*
* Easy versions of the cache routines; may be substituted by fancier ones for other purposes
*/
static char *lastname;
static Subfont *lastsubfont;
Subfont*
lookupsubfont(Display *d, char *name)
{
if(d && strcmp(name, "*default*") == 0)
return d->defaultsubfont;
if(lastname && strcmp(name, lastname)==0)
if(d==lastsubfont->bits->display){
lastsubfont->ref++;
return lastsubfont;
}
return 0;
}
void
installsubfont(char *name, Subfont *subfont)
{
free(lastname);
lastname = strdup(name);
lastsubfont = subfont; /* notice we don't free the old one; that's your business */
}
void
uninstallsubfont(Subfont *subfont)
{
if(subfont == lastsubfont){
free(lastname);
lastname = 0;
lastsubfont = 0;
}
}