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(Fformat_mode_line): New function.

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(frame_title_buf, frame_title_buf_end, frame_title_ptr)
(store_frame_title_char, store_frame_title): Use unconditionally.
(init_xdisp): Defsubr Fformat_mode_line.
Initialize frame_title_buf etc. unconditionally.
This commit is contained in:
Kim F. Storm 2002-06-11 22:27:11 +00:00
parent aba91547ff
commit 8143e6ab15
1 changed files with 63 additions and 8 deletions
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71
src/xdisp.c
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@ -7170,7 +7170,8 @@ echo_area_display (update_frame_p)
***********************************************************************/
#ifdef HAVE_WINDOW_SYSTEM
/* The frame title buffering code is also used by Fformat_mode_line.
So it is not conditioned by HAVE_WINDOW_SYSTEM. */
/* A buffer for constructing frame titles in it; allocated from the
heap in init_xdisp and resized as needed in store_frame_title_char. */
@ -7238,6 +7239,7 @@ store_frame_title (str, field_width, precision)
return n;
}
#ifdef HAVE_WINDOW_SYSTEM
/* Set the title of FRAME, if it has changed. The title format is
Vicon_title_format if FRAME is iconified, otherwise it is
@ -7302,11 +7304,6 @@ x_consider_frame_title (frame)
}
}
#else /* not HAVE_WINDOW_SYSTEM */
#define frame_title_ptr ((char *)0)
#define store_frame_title(str, mincol, maxcol) 0
#endif /* not HAVE_WINDOW_SYSTEM */
@ -14018,6 +14015,65 @@ display_mode_element (it, depth, field_width, precision, elt, props, risky)
}
DEFUN ("format-mode-line", Fformat_mode_line, Sformat_mode_line,
0, 2, 0,
doc: /* Return the mode-line of selected window as a string.
First optional arg FORMAT specifies a different format string (see
`mode-line-format' for for details) to use. If FORMAT is t, return
the buffer's header-line. Second optional arg WINDOW specifies a
different window to use as the context for the formatting. */)
(format, window)
Lisp_Object format, window;
{
struct it it;
struct face *face;
int len;
struct window *w;
struct buffer *old_buffer = NULL;
if (NILP (window))
window = selected_window;
CHECK_WINDOW (window);
w = XWINDOW (window);
CHECK_BUFFER (w->buffer);
if (XBUFFER (w->buffer) != current_buffer)
{
old_buffer = current_buffer;
set_buffer_internal_1 (XBUFFER (w->buffer));
}
if (NILP (format) || EQ (format, Qt))
format = NILP (format)
? current_buffer->mode_line_format
: current_buffer->header_line_format;
init_iterator (&it, w, -1, -1, NULL, DEFAULT_FACE_ID);
frame_title_ptr = frame_title_buf;
push_frame_kboard (it.f);
display_mode_element (&it, 0, 0, 0, format, Qnil, 0);
pop_frame_kboard ();
if (old_buffer)
set_buffer_internal_1 (old_buffer);
len = frame_title_ptr - frame_title_buf;
if (len > 0 && frame_title_ptr[-1] == '-')
{
/* Mode lines typically ends with numerous dashes; reduce to two dashes. */
while (frame_title_ptr > frame_title_buf && *--frame_title_ptr == '-')
;
frame_title_ptr += 3; /* restore last non-dash + two dashes */
if (len > frame_title_ptr - frame_title_buf)
len = frame_title_ptr - frame_title_buf;
}
frame_title_ptr = NULL;
return make_string (frame_title_buf, len);
}
/* Write a null-terminated, right justified decimal representation of
the positive integer D to BUF using a minimal field width WIDTH. */
@ -14900,6 +14956,7 @@ syms_of_xdisp ()
#ifdef HAVE_WINDOW_SYSTEM
defsubr (&Stool_bar_lines_needed);
#endif
defsubr (&Sformat_mode_line);
staticpro (&Qmenu_bar_update_hook);
Qmenu_bar_update_hook = intern ("menu-bar-update-hook");
@ -15295,7 +15352,6 @@ init_xdisp ()
default_invis_vector[i] = make_number ('.');
}
#ifdef HAVE_WINDOW_SYSTEM
{
/* Allocate the buffer for frame titles. */
int size = 100;
@ -15303,7 +15359,6 @@ init_xdisp ()
frame_title_buf_end = frame_title_buf + size;
frame_title_ptr = NULL;
}
#endif /* HAVE_WINDOW_SYSTEM */
help_echo_showing_p = 0;
}