diff options
Diffstat (limited to 'hacks/fontglide.c')
| -rw-r--r-- | hacks/fontglide.c | 112 |
1 files changed, 94 insertions, 18 deletions
diff --git a/hacks/fontglide.c b/hacks/fontglide.c index 54c11b1..3eff604 100644 --- a/hacks/fontglide.c +++ b/hacks/fontglide.c @@ -13,17 +13,20 @@ * Requires a system with scalable fonts. (X's font handing sucks. A lot.) */ -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif /* HAVE_CONFIG_H */ - - /* If you turn on DEBUG, this program also masquerades as a tool for debugging font metrics issues, which is probably only if interest if you are doing active development on libjwxyz.a itself. */ /* #define DEBUG */ +#include "screenhack.h" +#include "textclient.h" +#include "utf8wc.h" + +#ifdef HAVE_DOUBLE_BUFFER_EXTENSION +#include "xdbe.h" +#endif /* HAVE_DOUBLE_BUFFER_EXTENSION */ + #include <math.h> #include <time.h> @@ -35,15 +38,6 @@ # include <unistd.h> #endif -#include "screenhack.h" -#include "textclient.h" -#include "xft.h" -#include "utf8wc.h" - -#ifdef HAVE_DOUBLE_BUFFER_EXTENSION -#include "xdbe.h" -#endif /* HAVE_DOUBLE_BUFFER_EXTENSION */ - typedef struct { char *text; @@ -205,7 +199,84 @@ pick_font_1 (state *s, sentence *se) char pattern[1024]; char pattern2[1024]; -#ifndef HAVE_JWXYZ /* real Xlib */ +# define _DONE_1 /**/ +# define _DONE_2 /**/ +# if defined(HAVE_XFT) && !defined(HAVE_JWXYZ) /* Real Xft under real X11 */ +# undef _DONE_1 +# undef _DONE_2 +# define _DONE_1 DONE_1: +# define _DONE_2 DONE_2: + if (s->font_override) + { + sprintf (pattern, "%.200s", s->font_override); + ok = True; + goto DONE_1; + } + else + { + unsigned long pixel = pick_font_size (s); + + /* https://keithp.com/~keithp/render/Xft.tutorial */ + XftFontSet *fs = + XftListFonts (s->dpy, DefaultScreen (s->dpy), + /* Pattern-triples to match, followed by a NULL */ + /* XFT_FAMILY, XftTypeString, "Helvetica", */ + /* XFT_SIZE, XftTypeDouble, 12.0, */ + NULL, + /* Properties to return, followed by a second NULL */ + XFT_FAMILY, + XFT_STYLE, + XFT_SLANT, + XFT_WEIGHT, + XFT_SIZE, + NULL); + XftPattern *pat; + char name1[1024], name2[1024], *s1, *s2; + XftFont *font; + + if (!fs) abort(); + if (fs->nfont <= 0) + { + fprintf (stderr, "%s: unable to list fonts\n", progname); + abort(); + } + pat = fs->fonts[(random() % fs->nfont)]; + if (!pat) abort(); + if (! XftNameUnparse (pat, name1, sizeof(name1)-1)) + { + /* I've seen this happen but rarely. Bogus font? */ + /* fprintf (stderr, "%s: unable to get font name\n", progname); */ + return False; + } + + /* Convert "Helvetica:style=..." into "Helvetica-48:style=" */ + s1 = strchr (name1, ':'); + s2 = strchr (name1, '-'); + if (!s1) abort(); + if (!s2) s2 = s1; + memcpy (name2, name1, s2 - name1); + name2[s2 - name1] = 0; + sprintf (name2 + strlen(name2), "-%ld:", pixel); + strcat (name2, s2 + 1); + font = XftFontOpenName (s->dpy, screen_number (s->xgwa.screen), name2); + + if (!font) + { + fprintf (stderr, "%s: unable to load Xft font \"%s\"\n", + progname, name2); + return False; + } + + /* #### This gets a link error with FcFontSetDestroy missing. */ + /* if (fs) XftFontSetDestroy (fs); */ + + se->xftfont = font; + ok = True; + goto DONE_2; + } + +# elif !defined(HAVE_JWXYZ) /* No Xft but real Xlib */ + char **names = 0; char **names2 = 0; XFontStruct *info = 0; @@ -243,6 +314,7 @@ pick_font_1 (state *s, sentence *se) "0", /* avg width */ s->charset); /* registry + encoding */ + names = XListFonts (s->dpy, pattern, 1000, &count); if (count <= 0) @@ -364,7 +436,7 @@ pick_font_1 (state *s, sentence *se) XFreeFontInfo (names2, info, count2); XFreeFontNames (names); -# else /* HAVE_JWXYZ */ +# else /* HAVE_JWXYZ -- no Xft on macOS, iOS or Android */ if (s->font_override) sprintf (pattern, "%.200s", s->font_override); @@ -379,11 +451,15 @@ pick_font_1 (state *s, sentence *se) ok = True; # endif /* HAVE_JWXYZ */ + _DONE_1 + if (! ok) return False; se->xftfont = XftFontOpenXlfd (s->dpy, screen_number (s->xgwa.screen), pattern); + _DONE_2 + if (! se->xftfont) { # ifdef DEBUG @@ -1638,12 +1714,12 @@ fontglide_draw_metrics (state *s) if (! s->metrics_xftfont) { s->metrics_xftfont = - XftFontOpenXlfd (s->dpy, screen_number(s->xgwa.screen), fn); + load_xft_font_retry (s->dpy, screen_number(s->xgwa.screen), fn); if (! s->metrics_xftfont) { const char *fn2 = "fixed"; s->metrics_xftfont = - XftFontOpenName (s->dpy, screen_number(s->xgwa.screen), fn2); + load_xft_font_retry (s->dpy, screen_number(s->xgwa.screen), fn2); if (s->metrics_xftfont) fn = fn2; else |