diff options
Diffstat (limited to 'drw.c')
| -rw-r--r-- | drw.c | 250 |
1 files changed, 0 insertions, 250 deletions
@@ -10,42 +10,6 @@ #define UTF_INVALID 0xFFFD -static int -utf8decode(const char *s_in, long *u, int *err) -{ - static const unsigned char lens[] = { - /* 0XXXX */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - /* 10XXX */ 0, 0, 0, 0, 0, 0, 0, 0, /* invalid */ - /* 110XX */ 2, 2, 2, 2, - /* 1110X */ 3, 3, - /* 11110 */ 4, - /* 11111 */ 0, /* invalid */ - }; - static const unsigned char leading_mask[] = { 0x7F, 0x1F, 0x0F, 0x07 }; - static const unsigned int overlong[] = { 0x0, 0x80, 0x0800, 0x10000 }; - - const unsigned char *s = (const unsigned char *)s_in; - int len = lens[*s >> 3]; - *u = UTF_INVALID; - *err = 1; - if (len == 0) - return 1; - - long cp = s[0] & leading_mask[len - 1]; - for (int i = 1; i < len; ++i) { - if (s[i] == '\0' || (s[i] & 0xC0) != 0x80) - return i; - cp = (cp << 6) | (s[i] & 0x3F); - } - /* out of range, surrogate, overlong encoding */ - if (cp > 0x10FFFF || (cp >> 11) == 0x1B || cp < overlong[len - 1]) - return len; - - *err = 0; - *u = cp; - return len; -} - Drw * drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h) { @@ -198,220 +162,6 @@ drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount) } void -drw_setfontset(Drw *drw, Fnt *set) -{ - if (drw) - drw->fonts = set; -} - -void -drw_setscheme(Drw *drw, Clr *scm) -{ - if (drw) - drw->scheme = scm; -} - -void -drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int invert) -{ - if (!drw || !drw->scheme) - return; - 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 - 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) -{ - int ty, ellipsis_x = 0; - unsigned int tmpw, ew, ellipsis_w = 0, ellipsis_len, hash, h0, h1; - XftDraw *d = NULL; - Fnt *usedfont, *curfont, *nextfont; - int utf8strlen, utf8charlen, utf8err, render = x || y || w || h; - long utf8codepoint = 0; - const char *utf8str; - FcCharSet *fccharset; - FcPattern *fcpattern; - FcPattern *match; - XftResult result; - int charexists = 0, overflow = 0; - /* keep track of a couple codepoints for which we have no match. */ - static unsigned int nomatches[128], ellipsis_width, invalid_width; - static const char invalid[] = "�"; - - if (!drw || (render && (!drw->scheme || !w)) || !text || !drw->fonts) - return 0; - - if (!render) { - w = invert ? invert : ~invert; - } else { - XSetForeground(drw->dpy, drw->gc, drw->scheme[invert ? ColFg : ColBg].pixel); - XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h); - if (w < lpad) - return x + w; - d = XftDrawCreate(drw->dpy, drw->drawable, - DefaultVisual(drw->dpy, drw->screen), - DefaultColormap(drw->dpy, drw->screen)); - x += lpad; - w -= lpad; - } - - usedfont = drw->fonts; - if (!ellipsis_width && render) - ellipsis_width = drw_fontset_getwidth(drw, "..."); - if (!invalid_width && render) - invalid_width = drw_fontset_getwidth(drw, invalid); - while (1) { - ew = ellipsis_len = utf8err = utf8charlen = utf8strlen = 0; - utf8str = text; - nextfont = NULL; - while (*text) { - utf8charlen = utf8decode(text, &utf8codepoint, &utf8err); - for (curfont = drw->fonts; curfont; curfont = curfont->next) { - charexists = charexists || XftCharExists(drw->dpy, curfont->xfont, utf8codepoint); - if (charexists) { - drw_font_getexts(curfont, text, utf8charlen, &tmpw, NULL); - if (ew + ellipsis_width <= w) { - /* keep track where the ellipsis still fits */ - ellipsis_x = x + ew; - ellipsis_w = w - ew; - ellipsis_len = utf8strlen; - } - - if (ew + tmpw > w) { - overflow = 1; - /* called from drw_fontset_getwidth_clamp(): - * it wants the width AFTER the overflow - */ - if (!render) - x += tmpw; - else - utf8strlen = ellipsis_len; - } else if (curfont == usedfont) { - text += utf8charlen; - utf8strlen += utf8err ? 0 : utf8charlen; - ew += utf8err ? 0 : tmpw; - } else { - nextfont = curfont; - } - break; - } - } - - if (overflow || !charexists || nextfont || utf8err) - break; - else - charexists = 0; - } - - if (utf8strlen) { - if (render) { - ty = y + (h - usedfont->h) / 2 + usedfont->xfont->ascent; - XftDrawStringUtf8(d, &drw->scheme[invert ? ColBg : ColFg], - usedfont->xfont, x, ty, (XftChar8 *)utf8str, utf8strlen); - } - x += ew; - w -= ew; - } - if (utf8err && (!render || invalid_width < w)) { - if (render) - drw_text(drw, x, y, w, h, 0, invalid, invert); - x += invalid_width; - w -= invalid_width; - } - if (render && overflow) - drw_text(drw, ellipsis_x, y, ellipsis_w, h, 0, "...", invert); - - if (!*text || overflow) { - 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; - - hash = (unsigned int)utf8codepoint; - hash = ((hash >> 16) ^ hash) * 0x21F0AAAD; - hash = ((hash >> 15) ^ hash) * 0xD35A2D97; - h0 = ((hash >> 15) ^ hash) % LENGTH(nomatches); - h1 = (hash >> 17) % LENGTH(nomatches); - /* avoid expensive XftFontMatch call when we know we won't find a match */ - if (nomatches[h0] == utf8codepoint || nomatches[h1] == utf8codepoint) - goto no_match; - - 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); - - 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); - nomatches[nomatches[h0] ? h1 : h0] = utf8codepoint; -no_match: - usedfont = drw->fonts; - } - } - } - } - if (d) - XftDrawDestroy(d); - - 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); -} - -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); -} - -unsigned int -drw_fontset_getwidth_clamp(Drw *drw, const char *text, unsigned int n) -{ - unsigned int tmp = 0; - if (drw && drw->fonts && text && n) - tmp = drw_text(drw, 0, 0, 0, 0, 0, text, n); - return MIN(n, tmp); -} - -void drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h) { XGlyphInfo ext; |
