diff options
Diffstat (limited to 'utils/xft.c')
| -rw-r--r-- | utils/xft.c | 110 |
1 files changed, 106 insertions, 4 deletions
diff --git a/utils/xft.c b/utils/xft.c index 9245752..6decd22 100644 --- a/utils/xft.c +++ b/utils/xft.c @@ -1,4 +1,4 @@ -/* xscreensaver, Copyright (c) 2014-2018 Jamie Zawinski <jwz@jwz.org> +/* xscreensaver, Copyright © 2014-2021 Jamie Zawinski <jwz@jwz.org> * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that @@ -37,6 +37,50 @@ struct _XftDraw { }; +Display * +XftDrawDisplay (XftDraw *draw) +{ + return draw->dpy; +} + + +Bool +XftDrawSetClipRectangles (XftDraw *draw, int x, int y, + _Xconst XRectangle *rects, int n) +{ + if (!n) + return XSetClipMask (draw->dpy, draw->gc, 0); +# if 0 + else + /* #### unimplemented in jwxyz, so clipping is a no-op */ + return XSetClipRectangles (draw->dpy, draw->gc, x, y, + (XRectangle *) rects, /* discard const */ + n, Unsorted); +# else + return False; +# endif +} + + +Bool +XftDrawSetClip (XftDraw *draw, Region region) +{ + if (!region) + return XSetClipMask (draw->dpy, draw->gc, 0); +# if 0 + else + /* #### unimplemented in jwxyz, so clipping is a no-op */ + { + XRectangle rect; /* #### untested */ + XClipBox (region, &rect); /* #### unimplemented in jwxyz */ + return XftDrawSetClipRectangles (draw, 0, 0, &rect, 1); + } +# else + return False; +# endif +} + + XftFont * XftFontOpenXlfd (Display *dpy, int screen, _Xconst char *xlfd) { @@ -60,8 +104,9 @@ XftFontOpenXlfd (Display *dpy, int screen, _Xconst char *xlfd) { unsigned i; - // In the event of -*-random-* (under JWXYZ), get the actual XLFD, - // otherwise we'll get another random font that doesn't match ff->xfont. + /* In the event of -*-random-* (under JWXYZ), get the actual XLFD, + otherwise we'll get another random font that doesn't match ff->xfont. + */ char *xlfd_resolved = NULL; char **missing_charset_list_return; @@ -111,6 +156,62 @@ XftFontOpenXlfd (Display *dpy, int screen, _Xconst char *xlfd) } +/* Very approximately convert an XFT-style name to an XLFD style name + and then call XftFontOpenXlfd on that. + */ +XftFont * +XftFontOpenName (Display *dpy, int screen, _Xconst char *xft_name) +{ + XftFont *font; + char *name = strdup (xft_name); + char *xlfd = 0; + char *s, *b, *i, *o, *c; + int size; + char dummy; + + /* Ignore any ":keywords=" */ + c = strchr (name, ':'); + if (c) *c = 0; + + /* Downcase ASCII */ + for (s = name; *s; s++) + if (*s >= 'A' && *s <= 'Z') + *s += 'a'-'A'; + + /* "Family-NN" */ + s = strrchr (name, '-'); + if (!s) goto FAIL; + if (1 != sscanf (s+1, " %d %c", &size, &dummy)) goto FAIL; + if (size <= 0) goto FAIL; + *s = 0; + + /* "Family Bold", etc. */ + b = strstr (name, " bold"); + i = strstr (name, " italic"); + o = strstr (name, " oblique"); + if (b) *b = 0; + if (i) *i = 0; + if (o) *o = 0; + + xlfd = (char *) malloc (strlen(name) + 80); + sprintf (xlfd, "-*-%s-%s-%s-*-*-*-%d-*-*-*-*-*-*", + name, + (b ? "bold" : "medium"), + (i ? "i" : o ? "o" : "r"), + size * 10); + font = XftFontOpenXlfd (dpy, screen, xlfd); + free (name); + free (xlfd); + return font; + + FAIL: + fprintf (stderr, "%s: XFT: unparsable: \"%s\"\n", progname, xft_name); + if (name) free (name); + if (xlfd) free (xlfd); + return 0; +} + + void XftFontClose (Display *dpy, XftFont *font) { @@ -132,7 +233,8 @@ XftColorAllocName (Display *dpy, XftColor *result) { XColor color; - if (!dpy || !visual || !name || !result) abort(); + if (!dpy || !visual || !result) abort(); + if (!name || !*name) name = "#FFFFFF"; if (! XParseColor (dpy, cmap, name, &color)) { |