/* Return a cons (FONT-NAME . GLYPH-CODE).
FONT-NAME is the font name for the character at POSITION in the current
buffer. This is computed from all the text properties and overlays
- that apply to POSITION.
+ that apply to POSITION. POSTION may be nil, in which case,
+ FONT-NAME is the font name for display the character CH with the
+ default face.
+
GLYPH-CODE is the glyph code in the font to use for the character.
If the 2nd optional arg CH is non-nil, it is a character to check
(2) The character code is invalid.
- (3) The current buffer is not displayed in any window.
+ (3) If POSITION is not nil, and the current buffer is not displayed
+ in any window.
In addition, the returned font name may not take into account of
such redisplay engine hooks as what used in jit-lock-mode if
int pos, pos_byte, dummy;
int face_id;
int c;
- Lisp_Object window;
- struct window *w;
struct frame *f;
struct face *face;
Lisp_Object charset, rfont_def;
- int charset_id;
-
- CHECK_NUMBER_COERCE_MARKER (position);
- pos = XINT (position);
- if (pos < BEGV || pos >= ZV)
- args_out_of_range_3 (position, make_number (BEGV), make_number (ZV));
- pos_byte = CHAR_TO_BYTE (pos);
- if (NILP (ch))
- c = FETCH_CHAR (pos_byte);
- else
+ int id;
+
+ if (NILP (position))
{
CHECK_CHARACTER (ch);
c = XINT (ch);
+ f = XFRAME (selected_frame);
+ face_id = DEFAULT_FACE_ID;
+ pos = -1;
+ }
+ else
+ {
+ Lisp_Object window;
+ struct window *w;
+
+ CHECK_NUMBER_COERCE_MARKER (position);
+ pos = XINT (position);
+ if (pos < BEGV || pos >= ZV)
+ args_out_of_range_3 (position, make_number (BEGV), make_number (ZV));
+ pos_byte = CHAR_TO_BYTE (pos);
+ if (NILP (ch))
+ c = FETCH_CHAR (pos_byte);
+ else
+ {
+ CHECK_NATNUM (ch);
+ c = XINT (ch);
+ }
+ window = Fget_buffer_window (Fcurrent_buffer (), Qnil);
+ if (NILP (window))
+ return Qnil;
+ w = XWINDOW (window);
+ f = XFRAME (w->frame);
+ face_id = face_at_buffer_position (w, pos, -1, -1, &dummy, pos + 100, 0);
}
- window = Fget_buffer_window (Fcurrent_buffer (), Qnil);
- if (NILP (window))
+ if (! CHAR_VALID_P (c, 0))
return Qnil;
- w = XWINDOW (window);
- f = XFRAME (w->frame);
- face_id = face_at_buffer_position (w, pos, -1, -1, &dummy, pos + 100, 0);
+ face_id = FACE_FOR_CHAR (f, FACE_FROM_ID (f, face_id), c, pos, Qnil);
face = FACE_FROM_ID (f, face_id);
charset = Fget_char_property (position, Qcharset, Qnil);
if (CHARSETP (charset))
- charset_id = XINT (CHARSET_SYMBOL_ID (charset));
+ id = XINT (CHARSET_SYMBOL_ID (charset));
else
- charset_id = -1;
- rfont_def = fontset_font (FONTSET_FROM_ID (face->fontset),
- c, face, charset_id);
+ id = -1;
+ rfont_def = fontset_font (FONTSET_FROM_ID (face->fontset), c, face, id);
if (VECTORP (rfont_def) && STRINGP (AREF (rfont_def, 3)))
{
Lisp_Object font_def;