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Add Xft and follback-fonts support to graphics lib

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This commit is contained in:
Eric Pruitt 2015-03-05 20:26:11 -08:00 committed by Anselm R Garbe
parent 35db6d8afc
commit 14343e69cc
6 changed files with 299 additions and 103 deletions
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9
config.def.h
View File

@ -1,7 +1,12 @@
/* See LICENSE file for copyright and license details. */
/* appearance */
static const char font[] = "-*-terminus-medium-r-*-*-16-*-*-*-*-*-*-*";
static const char *fonts[] = {
"Sans:size=10.5",
"VL Gothic:size=10.5",
"WenQuanYi Micro Hei:size=10.5",
};
static const char dmenufont[] = "-*-terminus-medium-r-*-*-16-*-*-*-*-*-*-*";
static const char normbordercolor[] = "#444444";
static const char normbgcolor[] = "#222222";
static const char normfgcolor[] = "#bbbbbb";
@ -51,7 +56,7 @@ static const Layout layouts[] = {
/* commands */
static char dmenumon[2] = "0"; /* component of dmenucmd, manipulated in spawn() */
static const char *dmenucmd[] = { "dmenu_run", "-m", dmenumon, "-fn", font, "-nb", normbgcolor, "-nf", normfgcolor, "-sb", selbgcolor, "-sf", selfgcolor, NULL };
static const char *dmenucmd[] = { "dmenu_run", "-m", dmenumon, "-fn", dmenufont, "-nb", normbgcolor, "-nf", normfgcolor, "-sb", selbgcolor, "-sf", selfgcolor, NULL };
static const char *termcmd[] = { "st", NULL };
static Key keys[] = {

4
config.mk
View File

@ -15,8 +15,8 @@ XINERAMALIBS = -lXinerama
XINERAMAFLAGS = -DXINERAMA
# includes and libs
INCS = -I${X11INC}
LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS}
INCS = -I${X11INC} -I/usr/include/freetype2
LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} -lfontconfig -lXft
# flags
CPPFLAGS = -D_BSD_SOURCE -D_POSIX_C_SOURCE=2 -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}

349
drw.c
View File

@ -3,10 +3,59 @@
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/Xft/Xft.h>
#include "drw.h"
#include "util.h"
#define UTF_INVALID 0xFFFD
#define UTF_SIZ 4
static const unsigned char utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
static const unsigned char utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
static const long utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
static const long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
static long
utf8decodebyte(const char c, size_t *i) {
for(*i = 0; *i < (UTF_SIZ + 1); ++(*i))
if(((unsigned char)c & utfmask[*i]) == utfbyte[*i])
return (unsigned char)c & ~utfmask[*i];
return 0;
}
static size_t
utf8validate(long *u, size_t i) {
if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
*u = UTF_INVALID;
for(i = 1; *u > utfmax[i]; ++i)
;
return i;
}
static size_t
utf8decode(const char *c, long *u, size_t clen) {
size_t i, j, len, type;
long udecoded;
*u = UTF_INVALID;
if(!clen)
return 0;
udecoded = utf8decodebyte(c[0], &len);
if(!BETWEEN(len, 1, UTF_SIZ))
return 1;
for(i = 1, j = 1; i < clen && j < len; ++i, ++j) {
udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
if(type != 0)
return j;
}
if(j < len)
return 0;
*u = udecoded;
utf8validate(u, len);
return len;
}
Drw *
drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h) {
Drw *drw = (Drw *)calloc(1, sizeof(Drw));
@ -19,6 +68,7 @@ drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h
drw->h = h;
drw->drawable = XCreatePixmap(dpy, root, w, h, DefaultDepth(dpy, screen));
drw->gc = XCreateGC(dpy, root, 0, NULL);
drw->fontcount = 0;
XSetLineAttributes(dpy, drw->gc, 1, LineSolid, CapButt, JoinMiter);
return drw;
}
@ -36,56 +86,88 @@ drw_resize(Drw *drw, unsigned int w, unsigned int h) {
void
drw_free(Drw *drw) {
size_t i;
for (i = 0; i < drw->fontcount; i++) {
drw_font_free(drw->fonts[i]);
}
XFreePixmap(drw->dpy, drw->drawable);
XFreeGC(drw->dpy, drw->gc);
free(drw);
}
Fnt *
drw_font_create(Display *dpy, const char *fontname) {
/* This function is an implementation detail. Library users should use
* drw_font_create instead.
*/
static Fnt *
drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) {
Fnt *font;
char *def, **missing;
int n;
font = (Fnt *)calloc(1, sizeof(Fnt));
if(!font)
if (!(fontname || fontpattern))
die("No font specified.\n");
if (!(font = (Fnt *)calloc(1, sizeof(Fnt))))
return NULL;
font->set = XCreateFontSet(dpy, fontname, &missing, &n, &def);
if(missing) {
while(n--)
fprintf(stderr, "drw: missing fontset: %s\n", missing[n]);
XFreeStringList(missing);
}
if(font->set) {
XFontStruct **xfonts;
char **font_names;
XExtentsOfFontSet(font->set);
n = XFontsOfFontSet(font->set, &xfonts, &font_names);
while(n--) {
font->ascent = MAX(font->ascent, (*xfonts)->ascent);
font->descent = MAX(font->descent,(*xfonts)->descent);
xfonts++;
if (fontname) {
/* Using the pattern found at font->xfont->pattern does not yield same
* the same substitution results as using the pattern returned by
* FcNameParse; using the latter results in the desired fallback
* behaviour whereas the former just results in
* missing-character-rectangles being drawn, at least with some fonts.
*/
if (!(font->xfont = XftFontOpenName(drw->dpy, drw->screen, fontname)) ||
!(font->pattern = FcNameParse((FcChar8 *) fontname))) {
if (font->xfont) {
XftFontClose(drw->dpy, font->xfont);
font->xfont = NULL;
}
fprintf(stderr, "error, cannot load font: '%s'\n", fontname);
}
} else if (fontpattern) {
if (!(font->xfont = XftFontOpenPattern(drw->dpy, fontpattern))) {
fprintf(stderr, "error, cannot load font pattern.\n");
} else {
font->pattern = NULL;
}
}
else {
if(!(font->xfont = XLoadQueryFont(dpy, fontname))
&& !(font->xfont = XLoadQueryFont(dpy, "fixed")))
die("error, cannot load font: '%s'\n", fontname);
font->ascent = font->xfont->ascent;
font->descent = font->xfont->descent;
if (!font->xfont) {
free(font);
return NULL;
}
font->ascent = font->xfont->ascent;
font->descent = font->xfont->descent;
font->h = font->ascent + font->descent;
font->dpy = drw->dpy;
return font;
}
Fnt*
drw_font_create(Drw *drw, const char *fontname) {
return drw_font_xcreate(drw, fontname, NULL);
}
void
drw_font_free(Display *dpy, Fnt *font) {
drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount) {
size_t i;
Fnt *font;
for (i = 0; i < fontcount; i++) {
if (drw->fontcount >= DRW_FONT_CACHE_SIZE) {
die("Font cache exhausted.\n");
} else if ((font = drw_font_xcreate(drw, fonts[i], NULL))) {
drw->fonts[drw->fontcount++] = font;
}
}
}
void
drw_font_free(Fnt *font) {
if(!font)
return;
if(font->set)
XFreeFontSet(dpy, font->set);
else
XFreeFont(dpy, font->xfont);
if(font->pattern)
FcPatternDestroy(font->pattern);
XftFontClose(font->dpy, font->xfont);
free(font);
}
@ -93,7 +175,7 @@ Clr *
drw_clr_create(Drw *drw, const char *clrname) {
Clr *clr;
Colormap cmap;
XColor color;
Visual *vis;
if(!drw)
return NULL;
@ -101,9 +183,10 @@ drw_clr_create(Drw *drw, const char *clrname) {
if(!clr)
return NULL;
cmap = DefaultColormap(drw->dpy, drw->screen);
if(!XAllocNamedColor(drw->dpy, cmap, clrname, &color, &color))
vis = DefaultVisual(drw->dpy, drw->screen);
if(!XftColorAllocName(drw->dpy, vis, cmap, clrname, &clr->rgb))
die("error, cannot allocate color '%s'\n", clrname);
clr->rgb = color.pixel;
clr->pix = clr->rgb.pixel;
return clr;
}
@ -113,15 +196,9 @@ drw_clr_free(Clr *clr) {
free(clr);
}
void
drw_setfont(Drw *drw, Fnt *font) {
if(drw)
drw->font = font;
}
void
drw_setscheme(Drw *drw, ClrScheme *scheme) {
if(drw && scheme)
if(drw && scheme)
drw->scheme = scheme;
}
@ -129,46 +206,160 @@ void
drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert) {
int dx;
if(!drw || !drw->font || !drw->scheme)
if(!drw || !drw->fontcount || !drw->scheme)
return;
XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->bg->rgb : drw->scheme->fg->rgb);
dx = (drw->font->ascent + drw->font->descent + 2) / 4;
XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->bg->pix : drw->scheme->fg->pix);
dx = (drw->fonts[0]->ascent + drw->fonts[0]->descent + 2) / 4;
if(filled)
XFillRectangle(drw->dpy, drw->drawable, drw->gc, x+1, y+1, dx+1, dx+1);
else if(empty)
XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x+1, y+1, dx, dx);
}
void
int
drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert) {
char buf[256];
int i, tx, ty, th, len, olen;
char buf[1024];
int tx, ty, th;
Extnts tex;
Colormap cmap;
Visual *vis;
XftDraw *d;
Fnt *curfont, *nextfont;
size_t i, len;
int utf8strlen, utf8charlen, render;
long utf8codepoint = 0;
const char *utf8str;
FcCharSet *fccharset;
FcPattern *fcpattern;
FcPattern *match;
XftResult result;
int charexists = 0;
if(!drw || !drw->scheme)
return;
XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->fg->rgb : drw->scheme->bg->rgb);
XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
if(!text || !drw->font)
return;
olen = strlen(text);
drw_font_getexts(drw->font, text, olen, &tex);
th = drw->font->ascent + drw->font->descent;
ty = y + (h / 2) - (th / 2) + drw->font->ascent;
tx = x + (h / 2);
/* shorten text if necessary */
for(len = MIN(olen, sizeof buf); len && (tex.w > w - tex.h || w < tex.h); len--)
drw_font_getexts(drw->font, text, len, &tex);
if(!len)
return;
memcpy(buf, text, len);
if(len < olen)
for(i = len; i && i > len - 3; buf[--i] = '.');
XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->bg->rgb : drw->scheme->fg->rgb);
if(drw->font->set)
XmbDrawString(drw->dpy, drw->drawable, drw->font->set, drw->gc, tx, ty, buf, len);
else
XDrawString(drw->dpy, drw->drawable, drw->gc, tx, ty, buf, len);
if (!(render = x || y || w || h)) {
w = ~w;
}
if (!drw || !drw->scheme) {
return 0;
} else if (render) {
XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->fg->pix : drw->scheme->bg->pix);
XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
}
if (!text || !drw->fontcount) {
return 0;
} else if (render) {
cmap = DefaultColormap(drw->dpy, drw->screen);
vis = DefaultVisual(drw->dpy, drw->screen);
d = XftDrawCreate(drw->dpy, drw->drawable, vis, cmap);
}
curfont = drw->fonts[0];
while (1) {
utf8strlen = 0;
utf8str = text;
nextfont = NULL;
while (*text) {
utf8charlen = utf8decode(text, &utf8codepoint, UTF_SIZ);
for (i = 0; i < drw->fontcount; i++) {
charexists = charexists || XftCharExists(drw->dpy, drw->fonts[i]->xfont, utf8codepoint);
if (charexists) {
if (drw->fonts[i] == curfont) {
utf8strlen += utf8charlen;
text += utf8charlen;
} else {
nextfont = drw->fonts[i];
}
break;
}
}
if (!charexists || (nextfont && nextfont != curfont)) {
break;
} else {
charexists = 0;
}
}
if (utf8strlen) {
drw_font_getexts(curfont, utf8str, utf8strlen, &tex);
/* shorten text if necessary */
for(len = MIN(utf8strlen, (sizeof buf) - 1); len && (tex.w > w - drw->fonts[0]->h || w < drw->fonts[0]->h); len--)
drw_font_getexts(curfont, utf8str, len, &tex);
if (len) {
memcpy(buf, utf8str, len);
buf[len] = '\0';
if(len < utf8strlen)
for(i = len; i && i > len - 3; buf[--i] = '.');
if (render) {
th = curfont->ascent + curfont->descent;
ty = y + (h / 2) - (th / 2) + curfont->ascent;
tx = x + (h / 2);
XftDrawStringUtf8(d, invert ? &drw->scheme->bg->rgb : &drw->scheme->fg->rgb, curfont->xfont, tx, ty, (XftChar8 *)buf, len);
}
x += tex.w;
w -= tex.w;
}
}
if (!*text) {
break;
} else if (nextfont) {
charexists = 0;
curfont = nextfont;
} else {
/* Regardless of whether or not a fallback font is found, the
* character must be drawn.
*/
charexists = 1;
if (drw->fontcount >= DRW_FONT_CACHE_SIZE) {
continue;
}
fccharset = FcCharSetCreate();
FcCharSetAddChar(fccharset, utf8codepoint);
if (!drw->fonts[0]->pattern) {
/* Refer to the comment in drw_font_xcreate for more
* information.
*/
die("The first font in the cache must be loaded from a font string.\n");
}
fcpattern = FcPatternDuplicate(drw->fonts[0]->pattern);
FcPatternAddCharSet(fcpattern, FC_CHARSET, fccharset);
FcPatternAddBool(fcpattern, FC_SCALABLE, FcTrue);
FcConfigSubstitute(NULL, fcpattern, FcMatchPattern);
FcDefaultSubstitute(fcpattern);
match = XftFontMatch(drw->dpy, drw->screen, fcpattern, &result);
FcCharSetDestroy(fccharset);
FcPatternDestroy(fcpattern);
if (match) {
curfont = drw_font_xcreate(drw, NULL, match);
if (curfont && XftCharExists(drw->dpy, curfont->xfont, utf8codepoint)) {
drw->fonts[drw->fontcount++] = curfont;
} else {
if (curfont) {
drw_font_free(curfont);
}
curfont = drw->fonts[0];
}
}
}
}
if (render) {
XftDrawDestroy(d);
}
return x;
}
void
@ -182,19 +373,13 @@ drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h) {
void
drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *tex) {
XRectangle r;
XGlyphInfo ext;
if(!font || !text)
return;
if(font->set) {
XmbTextExtents(font->set, text, len, NULL, &r);
tex->w = r.width;
tex->h = r.height;
}
else {
tex->h = font->ascent + font->descent;
tex->w = XTextWidth(font->xfont, text, len);
}
XftTextExtentsUtf8(font->dpy, font->xfont, (XftChar8 *)text, len, &ext);
tex->h = font->h;
tex->w = ext.xOff;
}
unsigned int

19
drw.h
View File

@ -1,7 +1,9 @@
/* See LICENSE file for copyright and license details. */
#define DRW_FONT_CACHE_SIZE 32
typedef struct {
unsigned long rgb;
unsigned long pix;
XftColor rgb;
} Clr;
typedef struct {
@ -9,11 +11,12 @@ typedef struct {
} Cur;
typedef struct {
Display *dpy;
int ascent;
int descent;
unsigned int h;
XFontSet set;
XFontStruct *xfont;
XftFont *xfont;
FcPattern *pattern;
} Fnt;
typedef struct {
@ -30,7 +33,8 @@ typedef struct {
Drawable drawable;
GC gc;
ClrScheme *scheme;
Fnt *font;
size_t fontcount;
Fnt *fonts[DRW_FONT_CACHE_SIZE];
} Drw;
typedef struct {
@ -44,8 +48,9 @@ void drw_resize(Drw *drw, unsigned int w, unsigned int h);
void drw_free(Drw *drw);
/* Fnt abstraction */
Fnt *drw_font_create(Display *dpy, const char *fontname);
void drw_font_free(Display *dpy, Fnt *font);
Fnt *drw_font_create(Drw *drw, const char *fontname);
void drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount);
void drw_font_free(Fnt *font);
void drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *extnts);
unsigned int drw_font_getexts_width(Fnt *font, const char *text, unsigned int len);
@ -63,7 +68,7 @@ void drw_setscheme(Drw *drw, ClrScheme *scheme);
/* Drawing functions */
void drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert);
void drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert);
int drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert);
/* Map functions */
void drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h);

20
dwm.c
View File

@ -39,6 +39,7 @@
#ifdef XINERAMA
#include <X11/extensions/Xinerama.h>
#endif /* XINERAMA */
#include <X11/Xft/Xft.h>
#include "drw.h"
#include "util.h"
@ -54,7 +55,7 @@
#define WIDTH(X) ((X)->w + 2 * (X)->bw)
#define HEIGHT(X) ((X)->h + 2 * (X)->bw)
#define TAGMASK ((1 << LENGTH(tags)) - 1)
#define TEXTW(X) (drw_font_getexts_width(drw->font, X, strlen(X)) + drw->font->h)
#define TEXTW(X) (drw_text(drw, 0, 0, 0, 0, (X), 0) + drw->fonts[0]->h)
/* enums */
enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
@ -263,7 +264,6 @@ static Cur *cursor[CurLast];
static ClrScheme scheme[SchemeLast];
static Display *dpy;
static Drw *drw;
static Fnt *fnt;
static Monitor *mons, *selmon;
static Window root;
@ -474,7 +474,6 @@ cleanup(void) {
drw_cur_free(drw, cursor[CurNormal]);
drw_cur_free(drw, cursor[CurResize]);
drw_cur_free(drw, cursor[CurMove]);
drw_font_free(dpy, fnt);
drw_clr_free(scheme[SchemeNorm].border);
drw_clr_free(scheme[SchemeNorm].bg);
drw_clr_free(scheme[SchemeNorm].fg);
@ -792,7 +791,7 @@ focus(Client *c) {
detachstack(c);
attachstack(c);
grabbuttons(c, True);
XSetWindowBorder(dpy, c->win, scheme[SchemeSel].border->rgb);
XSetWindowBorder(dpy, c->win, scheme[SchemeSel].border->pix);
setfocus(c);
}
else {
@ -1040,7 +1039,7 @@ manage(Window w, XWindowAttributes *wa) {
wc.border_width = c->bw;
XConfigureWindow(dpy, w, CWBorderWidth, &wc);
XSetWindowBorder(dpy, w, scheme[SchemeNorm].border->rgb);
XSetWindowBorder(dpy, w, scheme[SchemeNorm].border->pix);
configure(c); /* propagates border_width, if size doesn't change */
updatewindowtype(c);
updatesizehints(c);
@ -1505,13 +1504,14 @@ setup(void) {
/* init screen */
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);
fnt = drw_font_create(dpy, font);
sw = DisplayWidth(dpy, screen);
sh = DisplayHeight(dpy, screen);
bh = fnt->h + 2;
root = RootWindow(dpy, screen);
drw = drw_create(dpy, screen, root, sw, sh);
drw_setfont(drw, fnt);
drw_load_fonts(drw, fonts, LENGTH(fonts));
if (!drw->fontcount)
die("No fonts could be loaded.\n");
bh = drw->fonts[0]->h + 2;
updategeom();
/* init atoms */
wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
@ -1685,7 +1685,7 @@ unfocus(Client *c, Bool setfocus) {
if(!c)
return;
grabbuttons(c, False);
XSetWindowBorder(dpy, c->win, scheme[SchemeNorm].border->rgb);
XSetWindowBorder(dpy, c->win, scheme[SchemeNorm].border->pix);
if(setfocus) {
XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
XDeleteProperty(dpy, root, netatom[NetActiveWindow]);

1
util.h
View File

@ -2,5 +2,6 @@
#define MAX(A, B) ((A) > (B) ? (A) : (B))
#define MIN(A, B) ((A) < (B) ? (A) : (B))
#define BETWEEN(X, A, B) ((A) <= (X) && (X) <= (B))
void die(const char *errstr, ...);