159 lines
3.7 KiB
C
159 lines
3.7 KiB
C
/*
|
|
* font.c - cwm font abstraction
|
|
*
|
|
* Copyright (c) 2005 Marius Eriksen <marius@monkey.org>
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include "hash.h"
|
|
#include "headers.h"
|
|
#include "calmwm.h"
|
|
|
|
static XftFont *_make_font(struct screen_ctx *sc, struct fontdesc *fdp);
|
|
|
|
HASH_GENERATE(fonthash, fontdesc, node, fontdesc_cmp);
|
|
|
|
int
|
|
fontdesc_cmp(struct fontdesc *a, struct fontdesc *b)
|
|
{
|
|
return (strcmp(a->name, b->name));
|
|
}
|
|
|
|
/*
|
|
* Fowler/Noll/Vo hash
|
|
* http://www.isthe.com/chongo/tech/comp/fnv/
|
|
*/
|
|
|
|
#define FNV_P_32 ((unsigned int)0x01000193) /* 16777619 */
|
|
#define FNV_1_32 ((unsigned int)0x811c9dc5) /* 2166136261 */
|
|
|
|
unsigned int
|
|
fontdesc_hash(struct fontdesc *fdp)
|
|
{
|
|
const unsigned char *p, *end, *start;
|
|
unsigned int hash = FNV_1_32;
|
|
|
|
start = fdp->name;
|
|
end = (const unsigned char *)fdp->name + strlen(fdp->name);
|
|
|
|
for (p = start; p < end; p++) {
|
|
hash *= FNV_P_32;
|
|
hash ^= (unsigned int)*p;
|
|
}
|
|
|
|
return (hash);
|
|
}
|
|
|
|
void
|
|
font_init(struct screen_ctx *sc)
|
|
{
|
|
XColor xcolor, tmp;
|
|
|
|
HASH_INIT(&sc->fonthash, fontdesc_hash);
|
|
sc->xftdraw = XftDrawCreate(X_Dpy, sc->rootwin,
|
|
DefaultVisual(X_Dpy, sc->which), DefaultColormap(X_Dpy, sc->which));
|
|
if (sc->xftdraw == NULL)
|
|
errx(1, "XftDrawCreate");
|
|
|
|
if (!XAllocNamedColor(X_Dpy, DefaultColormap(X_Dpy, sc->which),
|
|
"black", &xcolor, &tmp))
|
|
errx(1, "XAllocNamedColor");
|
|
|
|
sc->xftcolor.color.red = xcolor.red;
|
|
sc->xftcolor.color.green = xcolor.green;
|
|
sc->xftcolor.color.blue = xcolor.blue;
|
|
sc->xftcolor.color.alpha = 0x00ff00;
|
|
sc->xftcolor.pixel = xcolor.pixel;
|
|
}
|
|
|
|
struct fontdesc *
|
|
font_getx(struct screen_ctx *sc, const char *name)
|
|
{
|
|
struct fontdesc *fdp;
|
|
|
|
if ((fdp = font_get(sc, name)) == NULL)
|
|
errx(1, "font_get()");
|
|
|
|
return (fdp);
|
|
}
|
|
|
|
struct fontdesc *
|
|
font_get(struct screen_ctx *sc, const char *name)
|
|
{
|
|
struct fontdesc fd, *fdp;
|
|
XftFont *fn;
|
|
|
|
fd.name = name;
|
|
|
|
if ((fdp = HASH_FIND(fonthash, &sc->fonthash, &fd)) == NULL
|
|
&& (fn = _make_font(sc, &fd)) != NULL) {
|
|
fdp = xmalloc(sizeof(*fdp));
|
|
fdp->name = xstrdup(fd.name);
|
|
fdp->fn = fn;
|
|
fdp->sc = sc;
|
|
HASH_INSERT(fonthash, &sc->fonthash, fdp);
|
|
}
|
|
|
|
return (fdp);
|
|
}
|
|
|
|
int
|
|
font_width(struct fontdesc *fdp, const char *text, int len)
|
|
{
|
|
XGlyphInfo extents;
|
|
XftTextExtents8(X_Dpy, fdp->fn, (const XftChar8*)text, len, &extents);
|
|
|
|
return (extents.xOff);
|
|
}
|
|
|
|
void
|
|
font_draw(struct fontdesc *fdp, const char *text, int len,
|
|
Drawable d, int x, int y)
|
|
{
|
|
XftDrawChange(fdp->sc->xftdraw, d);
|
|
/* Really needs to be UTF8'd. */
|
|
XftDrawString8(fdp->sc->xftdraw, &fdp->sc->xftcolor, fdp->fn, x, y,
|
|
(const FcChar8*)text, len);
|
|
}
|
|
|
|
int
|
|
font_ascent(struct fontdesc *fdp)
|
|
{
|
|
return (fdp->fn->ascent);
|
|
}
|
|
|
|
int
|
|
font_descent(struct fontdesc *fdp)
|
|
{
|
|
return (fdp->fn->descent);
|
|
}
|
|
|
|
static XftFont *
|
|
_make_font(struct screen_ctx *sc, struct fontdesc *fdp)
|
|
{
|
|
XftFont *fn = NULL;
|
|
FcPattern *pat, *patx;
|
|
XftResult res;
|
|
|
|
if ((pat = FcNameParse(fdp->name)) == NULL)
|
|
return (NULL);
|
|
|
|
if ((patx = XftFontMatch(X_Dpy, sc->which, pat, &res)) != NULL)
|
|
fn = XftFontOpenPattern(X_Dpy, patx);
|
|
|
|
FcPatternDestroy(pat);
|
|
|
|
return (fn);
|
|
}
|