Import sources from 2011-03-30 iso image

sys/src/libdraw/subfont.c

@@ -0,0 +1,28 @@
+#include <u.h>
+#include <libc.h>
+#include <draw.h>
+
+Subfont*
+allocsubfont(char *name, int n, int height, int ascent, Fontchar *info, Image *i)
+{
+	Subfont *f;
+
+	assert(height != 0 /* allocsubfont */);
+
+	f = malloc(sizeof(Subfont));
+	if(f == 0)
+		return 0;
+	f->n = n;
+	f->height = height;
+	f->ascent = ascent;
+	f->info = info;
+	f->bits = i;
+	f->ref = 1;
+	if(name){
+		f->name = strdup(name);
+		if(lookupsubfont(i->display, name) == 0)
+			installsubfont(name, f);
+	}else
+		f->name = 0;
+	return f;
+}