xref: /inferno-os/libdraw/subfontcache.c (revision 37da2899f40661e3e9631e497da8dc59b971cbd0)
1*37da2899SCharles.Forsyth #include "lib9.h"
2*37da2899SCharles.Forsyth #include "draw.h"
3*37da2899SCharles.Forsyth 
4*37da2899SCharles.Forsyth /*
5*37da2899SCharles.Forsyth  * Easy versions of the cache routines; may be substituted by fancier ones for other purposes
6*37da2899SCharles.Forsyth  */
7*37da2899SCharles.Forsyth 
8*37da2899SCharles.Forsyth static char	*lastname;
9*37da2899SCharles.Forsyth Subfont	*lastsubfont;
10*37da2899SCharles.Forsyth 
11*37da2899SCharles.Forsyth Subfont*
lookupsubfont(Display * d,char * name)12*37da2899SCharles.Forsyth lookupsubfont(Display *d, char *name)
13*37da2899SCharles.Forsyth {
14*37da2899SCharles.Forsyth 	if(strcmp(name, "*default*") == 0)
15*37da2899SCharles.Forsyth 		return d->defaultsubfont;
16*37da2899SCharles.Forsyth 	if(lastname && strcmp(name, lastname)==0 && d==lastsubfont->bits->display){
17*37da2899SCharles.Forsyth 		lastsubfont->ref++;
18*37da2899SCharles.Forsyth 		return lastsubfont;
19*37da2899SCharles.Forsyth 	}
20*37da2899SCharles.Forsyth 	return 0;
21*37da2899SCharles.Forsyth }
22*37da2899SCharles.Forsyth 
23*37da2899SCharles.Forsyth void
installsubfont(char * name,Subfont * subfont)24*37da2899SCharles.Forsyth installsubfont(char *name, Subfont *subfont)
25*37da2899SCharles.Forsyth {
26*37da2899SCharles.Forsyth 	free(lastname);
27*37da2899SCharles.Forsyth 	lastname = strdup(name);
28*37da2899SCharles.Forsyth 	lastsubfont = subfont;	/* notice we don't free the old one; that's your business */
29*37da2899SCharles.Forsyth }
30*37da2899SCharles.Forsyth 
31*37da2899SCharles.Forsyth void
uninstallsubfont(Subfont * subfont)32*37da2899SCharles.Forsyth uninstallsubfont(Subfont *subfont)
33*37da2899SCharles.Forsyth {
34*37da2899SCharles.Forsyth 	if(subfont == lastsubfont){
35*37da2899SCharles.Forsyth 		lastname = 0;
36*37da2899SCharles.Forsyth 		lastsubfont = 0;
37*37da2899SCharles.Forsyth 	}
38*37da2899SCharles.Forsyth }
39