diff options
| author | Eric Pruitt <eric.pruitt@gmail.com> | 2015-03-05 20:26:11 -0800 | 
|---|---|---|
| committer | Anselm R Garbe <garbeam@gmail.com> | 2015-03-13 21:44:22 +0100 | 
| commit | 14343e69cc596b847f71f1e825d3019ab1a29aa8 (patch) | |
| tree | bf7b0bede9b451f7f8e78e0d47fda511201622d8 | |
| parent | 35db6d8afc3fd9f80166feac6c1e4adf71d553c3 (diff) | |
Add Xft and follback-fonts support to graphics lib
| -rw-r--r-- | config.def.h | 9 | ||||
| -rw-r--r-- | config.mk | 4 | ||||
| -rw-r--r-- | drw.c | 349 | ||||
| -rw-r--r-- | drw.h | 19 | ||||
| -rw-r--r-- | dwm.c | 20 | ||||
| -rw-r--r-- | util.h | 1 | 
6 files changed, 299 insertions, 103 deletions
| diff --git a/config.def.h b/config.def.h index 875885b..eaae8f3 100644 --- a/config.def.h +++ b/config.def.h @@ -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[] = { @@ -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} @@ -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_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(Display *dpy, Fnt *font) { +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;  } @@ -114,14 +197,8 @@ drw_clr_free(Clr *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 @@ -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); @@ -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]); @@ -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, ...); | 
