diff options
Diffstat (limited to 'drw.c')
| -rw-r--r-- | drw.c | 327 |
1 files changed, 88 insertions, 239 deletions
@@ -4,62 +4,12 @@ #include <string.h> #include <X11/Xlib.h> #include <X11/Xft/Xft.h> +#include <pango/pango.h> +#include <pango/pangoxft.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 root, unsigned int w, unsigned int h) { @@ -95,50 +45,41 @@ drw_free(Drw *drw) { XFreePixmap(drw->dpy, drw->drawable); XFreeGC(drw->dpy, drw->gc); - drw_fontset_free(drw->fonts); + drw_font_free(drw->font); free(drw); } /* This function is an implementation detail. Library users should use - * drw_fontset_create instead. + * drw_font_create instead. */ static Fnt * -xfont_create(Drw *drw, const char *fontname, FcPattern *fontpattern) +xfont_create(Drw *drw, const char *fontname) { Fnt *font; - XftFont *xfont = NULL; - FcPattern *pattern = NULL; - - 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 { + PangoFontMap *fontmap; + PangoContext *context; + PangoFontDescription *desc; + PangoFontMetrics *metrics; + + if (!fontname) { die("no font specified."); } font = ecalloc(1, sizeof(Fnt)); - font->xfont = xfont; - font->pattern = pattern; - font->h = xfont->ascent + xfont->descent; font->dpy = drw->dpy; + fontmap = pango_xft_get_font_map(drw->dpy, drw->screen); + context = pango_font_map_create_context(fontmap); + desc = pango_font_description_from_string(fontname); + font->layout = pango_layout_new(context); + pango_layout_set_font_description(font->layout, desc); + + metrics = pango_context_get_metrics(context, desc, NULL); + font->h = pango_font_metrics_get_height(metrics) / PANGO_SCALE; + + pango_font_metrics_unref(metrics); + g_object_unref(context); + return font; } @@ -147,35 +88,28 @@ xfont_free(Fnt *font) { if (!font) return; - if (font->pattern) - FcPatternDestroy(font->pattern); - XftFontClose(font->dpy, font->xfont); + if (font->layout) + g_object_unref(font->layout); free(font); } Fnt* -drw_fontset_create(Drw* drw, const char *fonts[], size_t fontcount) +drw_font_create(Drw* drw, const char font[]) { - Fnt *cur, *ret = NULL; - size_t i; + Fnt *fnt = NULL; - if (!drw || !fonts) + if (!drw || !font) 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); + fnt = xfont_create(drw, font); + + return (drw->font = fnt); } void -drw_fontset_free(Fnt *font) +drw_font_free(Fnt *font) { if (font) { - drw_fontset_free(font->next); xfont_free(font); } } @@ -187,15 +121,15 @@ drw_clr_create(Drw *drw, Clr *dest, const char *clrname) return; if (!XftColorAllocName(drw->dpy, DefaultVisual(drw->dpy, drw->screen), - DefaultColormap(drw->dpy, drw->screen), - clrname, dest)) + DefaultColormap(drw->dpy, drw->screen), + 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) +drw_scm_create(Drw *drw, char *clrnames[], size_t clrcount) { size_t i; Clr *ret; @@ -210,13 +144,6 @@ 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) @@ -236,26 +163,16 @@ drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int } int -drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lpad, 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, Bool markup) { - int i, ty, ellipsis_x = 0; - unsigned int tmpw, ew, ellipsis_w = 0, ellipsis_len; + char buf[1024]; + int i, ty, th; + unsigned int ew, eh; XftDraw *d = NULL; - Fnt *usedfont, *curfont, *nextfont; - 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, overflow = 0; - /* keep track of a couple codepoints for which we have no match. */ - enum { nomatches_len = 64 }; - static struct { long codepoint[nomatches_len]; unsigned int idx; } nomatches; - static unsigned int ellipsis_width = 0; - - if (!drw || (render && (!drw->scheme || !w)) || !text || !drw->fonts) + size_t len; + int render = x || y || w || h; + + if (!drw || (render && !drw->scheme) || !text || !drw->font) return 0; if (!render) { @@ -264,120 +181,47 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp 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)); + 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, "..."); - while (1) { - ew = ellipsis_len = 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) { - 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) { - utf8strlen += utf8charlen; - text += utf8charlen; - ew += tmpw; - } else { - nextfont = curfont; - } - break; - } - } + len = strlen(text); - if (overflow || !charexists || nextfont) - break; - else - charexists = 0; + if (len) { + drw_font_getexts(drw->font, text, len, &ew, &eh, markup); + th = eh; + /* shorten text if necessary */ + for (len = MIN(len, sizeof(buf) - 1); len && ew > w; len--) { + drw_font_getexts(drw->font, text, len, &ew, &eh, markup); + if (eh > th) + th = eh; } - if (utf8strlen) { + if (len) { + memcpy(buf, text, len); + buf[len] = '\0'; + if (len < strlen(text)) + 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 *)utf8str, utf8strlen); + ty = y + (h - th) / 2; + if(markup) + pango_layout_set_markup(drw->font->layout, buf, len); + else + pango_layout_set_text(drw->font->layout, buf, len); + pango_xft_render_layout(d, &drw->scheme[invert ? ColBg : ColFg], + drw->font->layout, x * PANGO_SCALE, ty * PANGO_SCALE); + if(markup) /* clear markup attributes */ + pango_layout_set_attributes(drw->font->layout, NULL); } x += ew; w -= ew; } - 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; - - for (i = 0; i < nomatches_len; ++i) { - /* avoid calling XftFontMatch if we know we won't find a match */ - if (utf8codepoint == nomatches.codepoint[i]) - 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.codepoint[++nomatches.idx % nomatches_len] = utf8codepoint; -no_match: - usedfont = drw->fonts; - } - } - } } + if (d) XftDrawDestroy(d); @@ -395,35 +239,40 @@ drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h) } unsigned int -drw_fontset_getwidth(Drw *drw, const char *text) +drw_font_getwidth(Drw *drw, const char *text, Bool markup) { - if (!drw || !drw->fonts || !text) + if (!drw || !drw->font || !text) return 0; - return drw_text(drw, 0, 0, 0, 0, 0, text, 0); + return drw_text(drw, 0, 0, 0, 0, 0, text, 0, markup); } unsigned int -drw_fontset_getwidth_clamp(Drw *drw, const char *text, unsigned int n) +drw_font_getwidth_clamp(Drw *drw, const char *text, unsigned int n, Bool markup) { unsigned int tmp = 0; - if (drw && drw->fonts && text && n) - tmp = drw_text(drw, 0, 0, 0, 0, 0, text, n); + if (drw && drw->font && text && n) + tmp = drw_text(drw, 0, 0, 0, 0, 0, text, n, markup); return MIN(n, tmp); } void -drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h) +drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h, Bool markup) { - XGlyphInfo ext; - if (!font || !text) return; - XftTextExtentsUtf8(font->dpy, font->xfont, (XftChar8 *)text, len, &ext); + PangoRectangle r; + if(markup) + pango_layout_set_markup(font->layout, text, len); + else + pango_layout_set_text(font->layout, text, len); + pango_layout_get_extents(font->layout, 0, &r); + if(markup) /* clear markup attributes */ + pango_layout_set_attributes(font->layout, NULL); if (w) - *w = ext.xOff; + *w = r.width / PANGO_SCALE; if (h) - *h = font->h; + *h = r.height / PANGO_SCALE; } Cur * |