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(Fx_list_fonts): New optional arg MAXIMUM.

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Richard M. Stallman 1996-09-01 19:52:14 +00:00
parent 670ce6ea7a
commit 20ddcdc068
1 changed files with 22 additions and 8 deletions
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30
src/xfns.c
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@ -3325,7 +3325,7 @@ DEFUN ("unfocus-frame", Funfocus_frame, Sunfocus_frame, 0, 0, 0,
return Qnil;
}
DEFUN ("x-list-fonts", Fx_list_fonts, Sx_list_fonts, 1, 3, 0,
DEFUN ("x-list-fonts", Fx_list_fonts, Sx_list_fonts, 1, 4, 0,
"Return a list of the names of available fonts matching PATTERN.\n\
If optional arguments FACE and FRAME are specified, return only fonts\n\
the same size as FACE on FRAME.\n\
@ -3340,9 +3340,12 @@ The return value is a list of strings, suitable as arguments to\n\
set-face-font.\n\
\n\
Fonts Emacs can't use (i.e. proportional fonts) may or may not be excluded\n\
even if they match PATTERN and FACE.")
(pattern, face, frame)
Lisp_Object pattern, face, frame;
even if they match PATTERN and FACE.\n\
\n\
The optional fourth argument MAXIMUM sets a limit on how many\n\
fonts to match. The first MAXIMUM fonts are reported.")
(pattern, face, frame, maximum)
Lisp_Object pattern, face, frame, maximum;
{
int num_fonts;
char **names;
@ -3352,12 +3355,22 @@ even if they match PATTERN and FACE.")
XFontStruct *size_ref;
Lisp_Object list;
FRAME_PTR f;
Lisp_Object key;
int maxnames;
check_x ();
CHECK_STRING (pattern, 0);
if (!NILP (face))
CHECK_SYMBOL (face, 1);
if (NILP (maximum))
maxnames = 2000;
else
{
CHECK_NATNUM (maximum, 0);
maxnames = XINT (maximum);
}
f = check_x_frame (frame);
/* Determine the width standard for comparison with the fonts we find. */
@ -3386,7 +3399,8 @@ even if they match PATTERN and FACE.")
}
/* See if we cached the result for this particular query. */
list = Fassoc (pattern,
key = Fcons (pattern, maximum);
list = Fassoc (key,
XCONS (FRAME_X_DISPLAY_INFO (f)->name_list_element)->cdr);
/* We have info in the cache for this PATTERN. */
@ -3437,14 +3451,14 @@ even if they match PATTERN and FACE.")
if (size_ref)
names = XListFontsWithInfo (FRAME_X_DISPLAY (f),
XSTRING (pattern)->data,
2000, /* maxnames */
maxnames,
&num_fonts, /* count_return */
&info); /* info_return */
else
#endif
names = XListFonts (FRAME_X_DISPLAY (f),
XSTRING (pattern)->data,
2000, /* maxnames */
maxnames,
&num_fonts); /* count_return */
x_check_errors (FRAME_X_DISPLAY (f), "XListFonts failure: %s");
@ -3465,7 +3479,7 @@ even if they match PATTERN and FACE.")
for (i = 0; i < num_fonts; i++)
full_list = Fcons (build_string (names[i]), full_list);
XCONS (FRAME_X_DISPLAY_INFO (f)->name_list_element)->cdr
= Fcons (Fcons (pattern, full_list),
= Fcons (Fcons (key, full_list),
XCONS (FRAME_X_DISPLAY_INFO (f)->name_list_element)->cdr);
/* Make a list of the fonts that have the right width. */