X-Git-Url: https://git.armaanb.net/?p=dmenu.git;a=blobdiff_plain;f=drw.c;h=4cdbcbe51c2945f1f9be817e910f0331e1f1ea64;hp=80e3c39a2782f0505779ac13a7ad75290b430d15;hb=HEAD;hpb=44b242c76359e21b97418675f253d45feb7c04e0 diff --git a/drw.c b/drw.c index 80e3c39..4cdbcbe 100644 --- a/drw.c +++ b/drw.c @@ -63,9 +63,8 @@ utf8decode(const char *c, long *u, size_t clen) Drw * drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h) { - Drw *drw; + Drw *drw = ecalloc(1, sizeof(Drw)); - drw = ecalloc(1, sizeof(Drw)); drw->dpy = dpy; drw->screen = screen; drw->root = root; @@ -73,7 +72,6 @@ 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; @@ -82,6 +80,9 @@ drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h void drw_resize(Drw *drw, unsigned int w, unsigned int h) { + if (!drw) + return; + drw->w = w; drw->h = h; if (drw->drawable) @@ -92,142 +93,171 @@ 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); + drw_fontset_free(drw->fonts); free(drw); } /* This function is an implementation detail. Library users should use - * drw_font_create instead. + * drw_fontset_create instead. */ static Fnt * -drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) +xfont_create(Drw *drw, const char *fontname, FcPattern *fontpattern) { Fnt *font; XftFont *xfont = NULL; FcPattern *pattern = NULL; if (fontname) { - /* Using the pattern found at font->xfont->pattern does not yield same - * the same substitution results as using the pattern returned by + /* 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. - */ + * 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: '%s'\n", fontname); + fprintf(stderr, "error, cannot load font from name: '%s'\n", fontname); return NULL; } if (!(pattern = FcNameParse((FcChar8 *) fontname))) { - fprintf(stderr, "error, cannot load font: '%s'\n", 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 pattern.\n"); + fprintf(stderr, "error, cannot load font from pattern.\n"); return NULL; } } else { - die("no font specified.\n"); + die("no font specified."); + } + + /* 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 = ecalloc(1, sizeof(Fnt)); font->xfont = xfont; font->pattern = pattern; - font->ascent = xfont->ascent; - font->descent = xfont->descent; - font->h = font->ascent + font->descent; + font->h = xfont->ascent + xfont->descent; font->dpy = drw->dpy; return font; } -Fnt* -drw_font_create(Drw *drw, const char *fontname) +static void +xfont_free(Fnt *font) { - return drw_font_xcreate(drw, fontname, NULL); + if (!font) + return; + if (font->pattern) + FcPatternDestroy(font->pattern); + XftFontClose(font->dpy, font->xfont); + free(font); } -void -drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount) +Fnt* +drw_fontset_create(Drw* drw, const char *fonts[], size_t fontcount) { + Fnt *cur, *ret = NULL; 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; + if (!drw || !fonts) + return NULL; + + 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_font_free(Fnt *font) +drw_fontset_free(Fnt *font) { - if (!font) - return; - if (font->pattern) - FcPatternDestroy(font->pattern); - XftFontClose(font->dpy, font->xfont); - free(font); + if (font) { + drw_fontset_free(font->next); + xfont_free(font); + } } -Clr * -drw_clr_create(Drw *drw, const char *clrname) +void +drw_clr_create(Drw *drw, Clr *dest, const char *clrname) { - Clr *clr; + if (!drw || !dest || !clrname) + return; - clr = ecalloc(1, sizeof(Clr)); if (!XftColorAllocName(drw->dpy, DefaultVisual(drw->dpy, drw->screen), DefaultColormap(drw->dpy, drw->screen), - clrname, &clr->rgb)) - die("error, cannot allocate color '%s'\n", clrname); - clr->pix = clr->rgb.pixel; + clrname, dest)) + die("error, cannot allocate color '%s'", clrname); +} + +/* 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, const char *clrnames[], size_t clrcount) +{ + size_t i; + Clr *ret; - return clr; + /* 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_clr_free(Clr *clr) +drw_setfontset(Drw *drw, Fnt *set) { - free(clr); + if (drw) + drw->fonts = set; } void -drw_setscheme(Drw *drw, ClrScheme *scheme) +drw_setscheme(Drw *drw, Clr *scm) { - drw->scheme = scheme; + if (drw) + drw->scheme = scm; } void -drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert) +drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int invert) { - if (!drw->scheme) + if (!drw || !drw->scheme) return; - XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->bg->pix : drw->scheme->fg->pix); + 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 + 1, h + 1); - else if (empty) - XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h); + XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h); + else + 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, const char *text, int invert) +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 tx, ty, th; - Extnts tex; + int ty; + unsigned int ew; XftDraw *d = NULL; - Fnt *curfont, *nextfont; + Fnt *usedfont, *curfont, *nextfont; size_t i, len; - int utf8strlen, utf8charlen, render; + int utf8strlen, utf8charlen, render = x || y || w || h; long utf8codepoint = 0; const char *utf8str; FcCharSet *fccharset; @@ -236,66 +266,67 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex XftResult result; int charexists = 0; - if (!drw->scheme || !drw->fontcount) + if (!drw || (render && !drw->scheme) || !text || !drw->fonts) return 0; - if (!(render = x || y || w || h)) { + if (!render) { w = ~w; } else { - XSetForeground(drw->dpy, drw->gc, invert ? - drw->scheme->fg->pix : drw->scheme->bg->pix); + 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; } - curfont = drw->fonts[0]; + usedfont = drw->fonts; 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); + for (curfont = drw->fonts; curfont; curfont = curfont->next) { + charexists = charexists || XftCharExists(drw->dpy, curfont->xfont, utf8codepoint); if (charexists) { - if (drw->fonts[i] == curfont) { + if (curfont == usedfont) { utf8strlen += utf8charlen; text += utf8charlen; } else { - nextfont = drw->fonts[i]; + nextfont = curfont; } break; } } - if (!charexists || (nextfont && nextfont != curfont)) + if (!charexists || nextfont) break; else charexists = 0; } if (utf8strlen) { - drw_font_getexts(curfont, utf8str, utf8strlen, &tex); + drw_font_getexts(usedfont, utf8str, utf8strlen, &ew, NULL); /* 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); + 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] = '.'); + for (i = len; i && i > len - 3; buf[--i] = '.') + ; /* NOP */ 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); + ty = y + (h - usedfont->h) / 2 + usedfont->xfont->ascent; + XftDrawStringUtf8(d, &drw->scheme[invert ? ColBg : ColFg], + usedfont->xfont, x, ty, (XftChar8 *)buf, len); } - x += tex.w; - w -= tex.w; + x += ew; + w -= ew; } } @@ -303,28 +334,24 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex break; } else if (nextfont) { charexists = 0; - curfont = nextfont; + usedfont = nextfont; } else { /* Regardless of whether or not a fallback font is found, the - * character must be drawn. - */ + * 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"); + 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[0]->pattern); + 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); @@ -334,12 +361,14 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex FcPatternDestroy(fcpattern); if (match) { - curfont = drw_font_xcreate(drw, NULL, match); - if (curfont && XftCharExists(drw->dpy, curfont->xfont, utf8codepoint)) { - drw->fonts[drw->fontcount++] = curfont; + 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 { - drw_font_free(curfont); - curfont = drw->fonts[0]; + xfont_free(usedfont); + usedfont = drw->fonts; } } } @@ -347,34 +376,40 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex if (d) XftDrawDestroy(d); - return x; + return x + (render ? w : 0); } void drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h) { + if (!drw) + return; + XCopyArea(drw->dpy, drw->drawable, win, drw->gc, x, y, w, h, x, y); XSync(drw->dpy, False); } -void -drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *tex) +unsigned int +drw_fontset_getwidth(Drw *drw, const char *text) { - XGlyphInfo ext; - - XftTextExtentsUtf8(font->dpy, font->xfont, (XftChar8 *)text, len, &ext); - tex->h = font->h; - tex->w = ext.xOff; + if (!drw || !drw->fonts || !text) + return 0; + return drw_text(drw, 0, 0, 0, 0, 0, text, 0); } -unsigned int -drw_font_getexts_width(Fnt *font, const char *text, unsigned int len) +void +drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h) { - Extnts tex; + XGlyphInfo ext; - drw_font_getexts(font, text, len, &tex); + if (!font || !text) + return; - return tex.w; + XftTextExtentsUtf8(font->dpy, font->xfont, (XftChar8 *)text, len, &ext); + if (w) + *w = ext.xOff; + if (h) + *h = font->h; } Cur * @@ -382,7 +417,9 @@ drw_cur_create(Drw *drw, int shape) { Cur *cur; - cur = ecalloc(1, sizeof(Cur)); + if (!drw || !(cur = ecalloc(1, sizeof(Cur)))) + return NULL; + cur->cursor = XCreateFontCursor(drw->dpy, shape); return cur; @@ -393,6 +430,7 @@ drw_cur_free(Drw *drw, Cur *cursor) { if (!cursor) return; + XFreeCursor(drw->dpy, cursor->cursor); free(cursor); }