#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)
+ return j;
+ }
+ if (j < len)
+ return 0;
+ *u = udecoded;
+ utf8validate(u, len);
+
+ return len;
+}
+
Drw *
-drw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h) {
- Drw *drw = (Drw *)calloc(1, sizeof(Drw));
+drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h)
+{
+ Drw *drw = ecalloc(1, sizeof(Drw));
+
drw->dpy = dpy;
drw->screen = screen;
- drw->win = win;
+ drw->root = root;
drw->w = w;
drw->h = h;
- drw->drwable = XCreatePixmap(dpy, win, w, h, DefaultDepth(dpy, screen));
- drw->gc = XCreateGC(dpy, win, 0, NULL);
+ drw->drawable = XCreatePixmap(dpy, root, w, h, DefaultDepth(dpy, screen));
+ drw->gc = XCreateGC(dpy, root, 0, NULL);
XSetLineAttributes(dpy, drw->gc, 1, LineSolid, CapButt, JoinMiter);
+
return drw;
}
void
-drw_resize(Drw *drw, unsigned int w, unsigned int h) {
- if(!drw)
+drw_resize(Drw *drw, unsigned int w, unsigned int h)
+{
+ if (!drw)
return;
+
drw->w = w;
drw->h = h;
- XFreePixmap(drw->dpy, drw->drwable);
- drw->drwable = XCreatePixmap(drw->dpy, drw->win, w, h, DefaultDepth(drw->dpy, drw->screen));
+ if (drw->drawable)
+ XFreePixmap(drw->dpy, drw->drawable);
+ drw->drawable = XCreatePixmap(drw->dpy, drw->root, w, h, DefaultDepth(drw->dpy, drw->screen));
}
void
-drw_free(Drw *drw) {
- XFreePixmap(drw->dpy, drw->drwable);
+drw_free(Drw *drw)
+{
+ XFreePixmap(drw->dpy, drw->drawable);
XFreeGC(drw->dpy, drw->gc);
+ drw_fontset_free(drw->fonts);
free(drw);
}
-Fnt *
-drw_font_create(Drw *drw, const char *fontname) {
+/* This function is an implementation detail. Library users should use
+ * drw_fontset_create instead.
+ */
+static Fnt *
+xfont_create(Drw *drw, const char *fontname, FcPattern *fontpattern)
+{
Fnt *font;
- char *def, **missing;
- int n;
+ XftFont *xfont = NULL;
+ FcPattern *pattern = NULL;
- if(!drw)
- return NULL;
- font = (Fnt *)calloc(1, sizeof(Fnt));
- font->set = XCreateFontSet(drw->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 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 (!(xfont = XftFontOpenName(drw->dpy, drw->screen, fontname))) {
+ fprintf(stderr, "error, cannot load font from name: '%s'\n", fontname);
+ return NULL;
}
+ if (!(pattern = FcNameParse((FcChar8 *) fontname))) {
+ fprintf(stderr, "error, cannot parse font name to pattern: '%s'\n", fontname);
+ XftFontClose(drw->dpy, xfont);
+ return NULL;
+ }
+ } else if (fontpattern) {
+ if (!(xfont = XftFontOpenPattern(drw->dpy, fontpattern))) {
+ fprintf(stderr, "error, cannot load font from pattern.\n");
+ return NULL;
+ }
+ } else {
+ die("no font specified.");
}
- else {
- if(!(font->xfont = XLoadQueryFont(drw->dpy, fontname))
- && !(font->xfont = XLoadQueryFont(drw->dpy, "fixed")))
- die("error, cannot load font: '%s'\n", fontname);
- font->ascent = font->xfont->ascent;
- font->descent = font->xfont->descent;
+
+ /* Do not allow using color fonts. This is a workaround for a BadLength
+ * error from Xft with color glyphs. Modelled on the Xterm workaround. See
+ * https://bugzilla.redhat.com/show_bug.cgi?id=1498269
+ * https://lists.suckless.org/dev/1701/30932.html
+ * https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=916349
+ * and lots more all over the internet.
+ */
+ FcBool iscol;
+ if(FcPatternGetBool(xfont->pattern, FC_COLOR, 0, &iscol) == FcResultMatch && iscol) {
+ XftFontClose(drw->dpy, xfont);
+ return NULL;
}
- font->h = font->ascent + font->descent;
+
+ font = ecalloc(1, sizeof(Fnt));
+ font->xfont = xfont;
+ font->pattern = pattern;
+ font->h = xfont->ascent + xfont->descent;
+ font->dpy = drw->dpy;
+
return font;
}
-void
-drw_font_free(Drw *drw, Fnt *font) {
- if(!drw || !font)
+static void
+xfont_free(Fnt *font)
+{
+ if (!font)
return;
- if(font->set)
- XFreeFontSet(drw->dpy, font->set);
- else
- XFreeFont(drw->dpy, font->xfont);
+ if (font->pattern)
+ FcPatternDestroy(font->pattern);
+ XftFontClose(font->dpy, font->xfont);
free(font);
}
-Clr *
-drw_clr_create(Drw *drw, const char *clrname) {
- Clr *clr = (Clr *)calloc(1, sizeof(Clr));
- Colormap cmap = DefaultColormap(drw->dpy, drw->screen);
- XColor color;
+Fnt*
+drw_fontset_create(Drw* drw, const char *fonts[], size_t fontcount)
+{
+ Fnt *cur, *ret = NULL;
+ size_t i;
+
+ if (!drw || !fonts)
+ return NULL;
- if(!XAllocNamedColor(drw->dpy, cmap, clrname, &color, &color))
- die("error, cannot allocate color '%s'\n", clrname);
- clr->rgb = color.pixel;
- return clr;
+ for (i = 1; i <= fontcount; i++) {
+ if ((cur = xfont_create(drw, fonts[fontcount - i], NULL))) {
+ cur->next = ret;
+ ret = cur;
+ }
+ }
+ return (drw->fonts = ret);
}
void
-drw_clr_free(Drw *drw, Clr *clr) {
- if(!clr)
- return;
- free(clr);
+drw_fontset_free(Fnt *font)
+{
+ if (font) {
+ drw_fontset_free(font->next);
+ xfont_free(font);
+ }
}
void
-drw_setfont(Drw *drw, Fnt *font) {
- if(!drw)
+drw_clr_create(Drw *drw, Clr *dest, const char *clrname)
+{
+ if (!drw || !dest || !clrname)
return;
- drw->font = font;
+
+ if (!XftColorAllocName(drw->dpy, DefaultVisual(drw->dpy, drw->screen),
+ DefaultColormap(drw->dpy, drw->screen),
+ clrname, dest))
+ die("error, cannot allocate color '%s'", clrname);
}
-void
-drw_setfg(Drw *drw, Clr *clr) {
- if(!drw)
- return;
- drw->fg = clr;
+/* Wrapper to create color schemes. The caller has to call free(3) on the
+ * returned color scheme when done using it. */
+Clr *
+drw_scm_create(Drw *drw, char *clrnames[], size_t clrcount)
+{
+ size_t i;
+ Clr *ret;
+
+ /* need at least two colors for a scheme */
+ if (!drw || !clrnames || clrcount < 2 || !(ret = ecalloc(clrcount, sizeof(XftColor))))
+ return NULL;
+
+ for (i = 0; i < clrcount; i++)
+ drw_clr_create(drw, &ret[i], clrnames[i]);
+ return ret;
}
void
-drw_setbg(Drw *drw, Clr *clr) {
- if(!drw)
- return;
- drw->bg = clr;
+drw_setfontset(Drw *drw, Fnt *set)
+{
+ if (drw)
+ drw->fonts = set;
}
void
-drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, Bool filled, Bool empty, Bool invert) {
- int dx;
-
- if(!drw || !drw->font || !drw->fg || !drw->bg)
- return;
- XSetForeground(drw->dpy, drw->gc, invert ? drw->bg->rgb : drw->fg->rgb);
- dx = (drw->font->ascent + drw->font->descent + 2) / 4;
- if(filled)
- XFillRectangle(drw->dpy, drw->drwable, drw->gc, x+1, y+1, dx+1, dx+1);
- else if(empty)
- XDrawRectangle(drw->dpy, drw->drwable, drw->gc, x+1, y+1, dx, dx);
+drw_setscheme(Drw *drw, Clr *scm)
+{
+ if (drw)
+ drw->scheme = scm;
}
void
-drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, Bool invert) {
- char buf[256];
- int i, tx, ty, len, olen;
- Extnts tex;
-
- if(!drw || !drw->fg || !drw->bg)
- return;
- XSetForeground(drw->dpy, drw->gc, invert ? drw->fg->rgb : drw->bg->rgb);
- XFillRectangle(drw->dpy, drw->drwable, drw->gc, x, y, w, h);
- if(!text || !drw->font)
- return;
- olen = strlen(text);
- drw_getexts(drw, text, olen, &tex);
- ty = y + (h / 2) - tex.yOff;
- tx = x + tex.xOff;
- /* shorten text if necessary */
- for(len = MIN(olen, sizeof buf); len && tex.w > w - tex.h; len--)
- drw_getexts(drw, text, len, &tex);
- if(!len)
+drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int invert)
+{
+ if (!drw || !drw->scheme)
return;
- memcpy(buf, text, len);
- if(len < olen)
- for(i = len; i && i > len - 3; buf[--i] = '.');
- XSetForeground(drw->dpy, drw->gc, invert ? drw->bg->rgb : drw->fg->rgb);
- if(drw->font->set)
- XmbDrawString(drw->dpy, drw->drwable, drw->font->set, drw->gc, tx, ty, buf, len);
+ XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme[ColBg].pixel : drw->scheme[ColFg].pixel);
+ if (filled)
+ XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
else
- XDrawString(drw->dpy, drw->drwable, drw->gc, tx, ty, buf, len);
+ XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w - 1, h - 1);
+}
+
+int
+drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lpad, const char *text, int invert)
+{
+ char buf[1024];
+ int ty;
+ unsigned int ew;
+ XftDraw *d = NULL;
+ Fnt *usedfont, *curfont, *nextfont;
+ size_t i, len;
+ int utf8strlen, utf8charlen, render = x || y || w || h;
+ long utf8codepoint = 0;
+ const char *utf8str;
+ FcCharSet *fccharset;
+ FcPattern *fcpattern;
+ FcPattern *match;
+ XftResult result;
+ int charexists = 0;
+
+ if (!drw || (render && !drw->scheme) || !text || !drw->fonts)
+ return 0;
+
+ if (!render) {
+ w = ~w;
+ } else {
+ XSetForeground(drw->dpy, drw->gc, drw->scheme[invert ? ColFg : ColBg].pixel);
+ XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
+ d = XftDrawCreate(drw->dpy, drw->drawable,
+ DefaultVisual(drw->dpy, drw->screen),
+ DefaultColormap(drw->dpy, drw->screen));
+ x += lpad;
+ w -= lpad;
+ }
+
+ usedfont = drw->fonts;
+ while (1) {
+ utf8strlen = 0;
+ utf8str = text;
+ nextfont = NULL;
+ while (*text) {
+ utf8charlen = utf8decode(text, &utf8codepoint, UTF_SIZ);
+ for (curfont = drw->fonts; curfont; curfont = curfont->next) {
+ charexists = charexists || XftCharExists(drw->dpy, curfont->xfont, utf8codepoint);
+ if (charexists) {
+ if (curfont == usedfont) {
+ utf8strlen += utf8charlen;
+ text += utf8charlen;
+ } else {
+ nextfont = curfont;
+ }
+ break;
+ }
+ }
+
+ if (!charexists || nextfont)
+ break;
+ else
+ charexists = 0;
+ }
+
+ if (utf8strlen) {
+ drw_font_getexts(usedfont, utf8str, utf8strlen, &ew, NULL);
+ /* shorten text if necessary */
+ for (len = MIN(utf8strlen, sizeof(buf) - 1); len && ew > w; len--)
+ drw_font_getexts(usedfont, utf8str, len, &ew, NULL);
+
+ if (len) {
+ memcpy(buf, utf8str, len);
+ buf[len] = '\0';
+ if (len < utf8strlen)
+ for (i = len; i && i > len - 3; buf[--i] = '.')
+ ; /* NOP */
+
+ if (render) {
+ ty = y + (h - usedfont->h) / 2 + usedfont->xfont->ascent;
+ XftDrawStringUtf8(d, &drw->scheme[invert ? ColBg : ColFg],
+ usedfont->xfont, x, ty, (XftChar8 *)buf, len);
+ }
+ x += ew;
+ w -= ew;
+ }
+ }
+
+ if (!*text) {
+ break;
+ } else if (nextfont) {
+ charexists = 0;
+ usedfont = nextfont;
+ } else {
+ /* Regardless of whether or not a fallback font is found, the
+ * character must be drawn. */
+ charexists = 1;
+
+ fccharset = FcCharSetCreate();
+ FcCharSetAddChar(fccharset, utf8codepoint);
+
+ if (!drw->fonts->pattern) {
+ /* Refer to the comment in xfont_create for more information. */
+ die("the first font in the cache must be loaded from a font string.");
+ }
+
+ fcpattern = FcPatternDuplicate(drw->fonts->pattern);
+ FcPatternAddCharSet(fcpattern, FC_CHARSET, fccharset);
+ FcPatternAddBool(fcpattern, FC_SCALABLE, FcTrue);
+ FcPatternAddBool(fcpattern, FC_COLOR, FcFalse);
+
+ FcConfigSubstitute(NULL, fcpattern, FcMatchPattern);
+ FcDefaultSubstitute(fcpattern);
+ match = XftFontMatch(drw->dpy, drw->screen, fcpattern, &result);
+
+ FcCharSetDestroy(fccharset);
+ FcPatternDestroy(fcpattern);
+
+ if (match) {
+ usedfont = xfont_create(drw, NULL, match);
+ if (usedfont && XftCharExists(drw->dpy, usedfont->xfont, utf8codepoint)) {
+ for (curfont = drw->fonts; curfont->next; curfont = curfont->next)
+ ; /* NOP */
+ curfont->next = usedfont;
+ } else {
+ xfont_free(usedfont);
+ usedfont = drw->fonts;
+ }
+ }
+ }
+ }
+ if (d)
+ XftDrawDestroy(d);
+
+ return x + (render ? w : 0);
}
void
-drw_map(Drw *drw, int x, int y, unsigned int w, unsigned int h) {
- if(!drw)
+drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h)
+{
+ if (!drw)
return;
- XCopyArea(drw->dpy, drw->drwable, drw->win, drw->gc, x, y, w, h, x, y);
+
+ XCopyArea(drw->dpy, drw->drawable, win, drw->gc, x, y, w, h, x, y);
XSync(drw->dpy, False);
}
+unsigned int
+drw_fontset_getwidth(Drw *drw, const char *text)
+{
+ if (!drw || !drw->fonts || !text)
+ return 0;
+ return drw_text(drw, 0, 0, 0, 0, 0, text, 0);
+}
void
-drw_getexts(Drw *drw, const char *text, unsigned int len, Extnts *tex) {
- XRectangle r;
+drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h)
+{
+ XGlyphInfo ext;
- if(!drw || !drw->font || !text)
+ if (!font || !text)
return;
- if(drw->font->set) {
- XmbTextExtents(drw->font->set, text, len, NULL, &r);
- tex->xOff = r.x;
- tex->yOff = r.y;
- tex->w = r.width;
- tex->h = r.height;
- }
- else {
- tex->h = drw->font->ascent + drw->font->descent;
- tex->w = XTextWidth(drw->font->xfont, text, len);
- tex->xOff = tex->h / 2;
- tex->yOff = (tex->h / 2) + drw->font->ascent;
- }
+
+ XftTextExtentsUtf8(font->dpy, font->xfont, (XftChar8 *)text, len, &ext);
+ if (w)
+ *w = ext.xOff;
+ if (h)
+ *h = font->h;
+}
+
+Cur *
+drw_cur_create(Drw *drw, int shape)
+{
+ Cur *cur;
+
+ if (!drw || !(cur = ecalloc(1, sizeof(Cur))))
+ return NULL;
+
+ cur->cursor = XCreateFontCursor(drw->dpy, shape);
+
+ return cur;
+}
+
+void
+drw_cur_free(Drw *drw, Cur *cursor)
+{
+ if (!cursor)
+ return;
+
+ XFreeCursor(drw->dpy, cursor->cursor);
+ free(cursor);
}
