plan9port/src/libdraw/mkfont.c
Russ Cox 79555a9987 libdraw: refine hidpi font selection
Change-Id: Id1e6a2630713024a1925ad1341bb9c846f82e93e
Reviewed-on: https://plan9port-review.googlesource.com/1171
Reviewed-by: Russ Cox <rsc@swtch.com>
2015-02-17 20:52:06 +00:00

57 lines
1.3 KiB
C

#include <u.h>
#include <libc.h>
#include <draw.h>
/*
* Cobble fake font using existing subfont
*/
Font*
mkfont(Subfont *subfont, Rune min)
{
Font *font;
Cachefont *c;
font = malloc(sizeof(Font));
if(font == 0)
return 0;
memset(font, 0, sizeof(Font));
font->scale = 1;
font->display = subfont->bits->display;
font->name = strdup("<synthetic>");
font->namespec = strdup("<synthetic>");
font->ncache = NFCACHE+NFLOOK;
font->nsubf = NFSUBF;
font->cache = malloc(font->ncache * sizeof(font->cache[0]));
font->subf = malloc(font->nsubf * sizeof(font->subf[0]));
if(font->name==0 || font->cache==0 || font->subf==0){
Err:
free(font->name);
free(font->cache);
free(font->subf);
free(font->sub);
free(font);
return 0;
}
memset(font->cache, 0, font->ncache*sizeof(font->cache[0]));
memset(font->subf, 0, font->nsubf*sizeof(font->subf[0]));
font->height = subfont->height;
font->ascent = subfont->ascent;
font->age = 1;
font->sub = malloc(sizeof(Cachefont*));
if(font->sub == 0)
goto Err;
c = malloc(sizeof(Cachefont));
if(c == 0)
goto Err;
font->nsub = 1;
font->sub[0] = c;
c->min = min;
c->max = min+subfont->n-1;
c->offset = 0;
c->name = 0; /* noticed by freeup() and agefont() */
c->subfontname = 0;
font->subf[0].age = 0;
font->subf[0].cf = c;
font->subf[0].f = subfont;
return font;
}