Mercurial > hg > xemacs-beta
view src/gui.c @ 665:fdefd0186b75
[xemacs-hg @ 2001-09-20 06:28:42 by ben]
The great integral types renaming.
The purpose of this is to rationalize the names used for various
integral types, so that they match their intended uses and follow
consist conventions, and eliminate types that were not semantically
different from each other.
The conventions are:
-- All integral types that measure quantities of anything are
signed. Some people disagree vociferously with this, but their
arguments are mostly theoretical, and are vastly outweighed by
the practical headaches of mixing signed and unsigned values,
and more importantly by the far increased likelihood of
inadvertent bugs: Because of the broken "viral" nature of
unsigned quantities in C (operations involving mixed
signed/unsigned are done unsigned, when exactly the opposite is
nearly always wanted), even a single error in declaring a
quantity unsigned that should be signed, or even the even more
subtle error of comparing signed and unsigned values and
forgetting the necessary cast, can be catastrophic, as
comparisons will yield wrong results. -Wsign-compare is turned
on specifically to catch this, but this tends to result in a
great number of warnings when mixing signed and unsigned, and
the casts are annoying. More has been written on this
elsewhere.
-- All such quantity types just mentioned boil down to EMACS_INT,
which is 32 bits on 32-bit machines and 64 bits on 64-bit
machines. This is guaranteed to be the same size as Lisp
objects of type `int', and (as far as I can tell) of size_t
(unsigned!) and ssize_t. The only type below that is not an
EMACS_INT is Hashcode, which is an unsigned value of the same
size as EMACS_INT.
-- Type names should be relatively short (no more than 10
characters or so), with the first letter capitalized and no
underscores if they can at all be avoided.
-- "count" == a zero-based measurement of some quantity. Includes
sizes, offsets, and indexes.
-- "bpos" == a one-based measurement of a position in a buffer.
"Charbpos" and "Bytebpos" count text in the buffer, rather than
bytes in memory; thus Bytebpos does not directly correspond to
the memory representation. Use "Membpos" for this.
-- "Char" refers to internal-format characters, not to the C type
"char", which is really a byte.
-- For the actual name changes, see the script below.
I ran the following script to do the conversion. (NOTE: This script
is idempotent. You can safely run it multiple times and it will
not screw up previous results -- in fact, it will do nothing if
nothing has changed. Thus, it can be run repeatedly as necessary
to handle patches coming in from old workspaces, or old branches.)
There are two tags, just before and just after the change:
`pre-integral-type-rename' and `post-integral-type-rename'. When
merging code from the main trunk into a branch, the best thing to
do is first merge up to `pre-integral-type-rename', then apply the
script and associated changes, then merge from
`post-integral-type-change' to the present. (Alternatively, just do
the merging in one operation; but you may then have a lot of
conflicts needing to be resolved by hand.)
Script `fixtypes.sh' follows:
----------------------------------- cut ------------------------------------
files="*.[ch] s/*.h m/*.h config.h.in ../configure.in Makefile.in.in ../lib-src/*.[ch] ../lwlib/*.[ch]"
gr Memory_Count Bytecount $files
gr Lstream_Data_Count Bytecount $files
gr Element_Count Elemcount $files
gr Hash_Code Hashcode $files
gr extcount bytecount $files
gr bufpos charbpos $files
gr bytind bytebpos $files
gr memind membpos $files
gr bufbyte intbyte $files
gr Extcount Bytecount $files
gr Bufpos Charbpos $files
gr Bytind Bytebpos $files
gr Memind Membpos $files
gr Bufbyte Intbyte $files
gr EXTCOUNT BYTECOUNT $files
gr BUFPOS CHARBPOS $files
gr BYTIND BYTEBPOS $files
gr MEMIND MEMBPOS $files
gr BUFBYTE INTBYTE $files
gr MEMORY_COUNT BYTECOUNT $files
gr LSTREAM_DATA_COUNT BYTECOUNT $files
gr ELEMENT_COUNT ELEMCOUNT $files
gr HASH_CODE HASHCODE $files
----------------------------------- cut ------------------------------------
`fixtypes.sh' is a Bourne-shell script; it uses 'gr':
----------------------------------- cut ------------------------------------
#!/bin/sh
# Usage is like this:
# gr FROM TO FILES ...
# globally replace FROM with TO in FILES. FROM and TO are regular expressions.
# backup files are stored in the `backup' directory.
from="$1"
to="$2"
shift 2
echo ${1+"$@"} | xargs global-replace "s/$from/$to/g"
----------------------------------- cut ------------------------------------
`gr' in turn uses a Perl script to do its real work,
`global-replace', which follows:
----------------------------------- cut ------------------------------------
: #-*- Perl -*-
### global-modify --- modify the contents of a file by a Perl expression
## Copyright (C) 1999 Martin Buchholz.
## Copyright (C) 2001 Ben Wing.
## Authors: Martin Buchholz <martin@xemacs.org>, Ben Wing <ben@xemacs.org>
## Maintainer: Ben Wing <ben@xemacs.org>
## Current Version: 1.0, May 5, 2001
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with XEmacs; see the file COPYING. If not, write to the Free
# Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.
eval 'exec perl -w -S $0 ${1+"$@"}'
if 0;
use strict;
use FileHandle;
use Carp;
use Getopt::Long;
use File::Basename;
(my $myName = $0) =~ s@.*/@@; my $usage="
Usage: $myName [--help] [--backup-dir=DIR] [--line-mode] [--hunk-mode]
PERLEXPR FILE ...
Globally modify a file, either line by line or in one big hunk.
Typical usage is like this:
[with GNU print, GNU xargs: guaranteed to handle spaces, quotes, etc.
in file names]
find . -name '*.[ch]' -print0 | xargs -0 $0 's/\bCONST\b/const/g'\n
[with non-GNU print, xargs]
find . -name '*.[ch]' -print | xargs $0 's/\bCONST\b/const/g'\n
The file is read in, either line by line (with --line-mode specified)
or in one big hunk (with --hunk-mode specified; it's the default), and
the Perl expression is then evalled with \$_ set to the line or hunk of
text, including the terminating newline if there is one. It should
destructively modify the value there, storing the changed result in \$_.
Files in which any modifications are made are backed up to the directory
specified using --backup-dir, or to `backup' by default. To disable this,
use --backup-dir= with no argument.
Hunk mode is the default because it is MUCH MUCH faster than line-by-line.
Use line-by-line only when it matters, e.g. you want to do a replacement
only once per line (the default without the `g' argument). Conversely,
when using hunk mode, *ALWAYS* use `g'; otherwise, you will only make one
replacement in the entire file!
";
my %options = ();
$Getopt::Long::ignorecase = 0;
&GetOptions (
\%options,
'help', 'backup-dir=s', 'line-mode', 'hunk-mode',
);
die $usage if $options{"help"} or @ARGV <= 1;
my $code = shift;
die $usage if grep (-d || ! -w, @ARGV);
sub SafeOpen {
open ((my $fh = new FileHandle), $_[0]);
confess "Can't open $_[0]: $!" if ! defined $fh;
return $fh;
}
sub SafeClose {
close $_[0] or confess "Can't close $_[0]: $!";
}
sub FileContents {
my $fh = SafeOpen ("< $_[0]");
my $olddollarslash = $/;
local $/ = undef;
my $contents = <$fh>;
$/ = $olddollarslash;
return $contents;
}
sub WriteStringToFile {
my $fh = SafeOpen ("> $_[0]");
binmode $fh;
print $fh $_[1] or confess "$_[0]: $!\n";
SafeClose $fh;
}
foreach my $file (@ARGV) {
my $changed_p = 0;
my $new_contents = "";
if ($options{"line-mode"}) {
my $fh = SafeOpen $file;
while (<$fh>) {
my $save_line = $_;
eval $code;
$changed_p = 1 if $save_line ne $_;
$new_contents .= $_;
}
} else {
my $orig_contents = $_ = FileContents $file;
eval $code;
if ($_ ne $orig_contents) {
$changed_p = 1;
$new_contents = $_;
}
}
if ($changed_p) {
my $backdir = $options{"backup-dir"};
$backdir = "backup" if !defined ($backdir);
if ($backdir) {
my ($name, $path, $suffix) = fileparse ($file, "");
my $backfulldir = $path . $backdir;
my $backfile = "$backfulldir/$name";
mkdir $backfulldir, 0755 unless -d $backfulldir;
print "modifying $file (original saved in $backfile)\n";
rename $file, $backfile;
}
WriteStringToFile ($file, $new_contents);
}
}
----------------------------------- cut ------------------------------------
In addition to those programs, I needed to fix up a few other
things, particularly relating to the duplicate definitions of
types, now that some types merged with others. Specifically:
1. in lisp.h, removed duplicate declarations of Bytecount. The
changed code should now look like this: (In each code snippet
below, the first and last lines are the same as the original, as
are all lines outside of those lines. That allows you to locate
the section to be replaced, and replace the stuff in that
section, verifying that there isn't anything new added that
would need to be kept.)
--------------------------------- snip -------------------------------------
/* Counts of bytes or chars */
typedef EMACS_INT Bytecount;
typedef EMACS_INT Charcount;
/* Counts of elements */
typedef EMACS_INT Elemcount;
/* Hash codes */
typedef unsigned long Hashcode;
/* ------------------------ dynamic arrays ------------------- */
--------------------------------- snip -------------------------------------
2. in lstream.h, removed duplicate declaration of Bytecount.
Rewrote the comment about this type. The changed code should
now look like this:
--------------------------------- snip -------------------------------------
#endif
/* The have been some arguments over the what the type should be that
specifies a count of bytes in a data block to be written out or read in,
using Lstream_read(), Lstream_write(), and related functions.
Originally it was long, which worked fine; Martin "corrected" these to
size_t and ssize_t on the grounds that this is theoretically cleaner and
is in keeping with the C standards. Unfortunately, this practice is
horribly error-prone due to design flaws in the way that mixed
signed/unsigned arithmetic happens. In fact, by doing this change,
Martin introduced a subtle but fatal error that caused the operation of
sending large mail messages to the SMTP server under Windows to fail.
By putting all values back to be signed, avoiding any signed/unsigned
mixing, the bug immediately went away. The type then in use was
Lstream_Data_Count, so that it be reverted cleanly if a vote came to
that. Now it is Bytecount.
Some earlier comments about why the type must be signed: This MUST BE
SIGNED, since it also is used in functions that return the number of
bytes actually read to or written from in an operation, and these
functions can return -1 to signal error.
Note that the standard Unix read() and write() functions define the
count going in as a size_t, which is UNSIGNED, and the count going
out as an ssize_t, which is SIGNED. This is a horrible design
flaw. Not only is it highly likely to lead to logic errors when a
-1 gets interpreted as a large positive number, but operations are
bound to fail in all sorts of horrible ways when a number in the
upper-half of the size_t range is passed in -- this number is
unrepresentable as an ssize_t, so code that checks to see how many
bytes are actually written (which is mandatory if you are dealing
with certain types of devices) will get completely screwed up.
--ben
*/
typedef enum lstream_buffering
--------------------------------- snip -------------------------------------
3. in dumper.c, there are four places, all inside of switch()
statements, where XD_BYTECOUNT appears twice as a case tag. In
each case, the two case blocks contain identical code, and you
should *REMOVE THE SECOND* and leave the first.
| author | ben |
|---|---|
| date | Thu, 20 Sep 2001 06:31:11 +0000 |
| parents | b39c14581166 |
| children | 943eaba38521 |
line wrap: on
line source
/* Generic GUI code. (menubars, scrollbars, toolbars, dialogs) Copyright (C) 1995 Board of Trustees, University of Illinois. Copyright (C) 1995, 1996 Ben Wing. Copyright (C) 1995 Sun Microsystems, Inc. Copyright (C) 1998 Free Software Foundation, Inc. This file is part of XEmacs. XEmacs is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. XEmacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with XEmacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Synched up with: Not in FSF. */ /* This file not quite Mule-ized yet but will be when merged with my Mule workspace. --ben */ #include <config.h> #include "lisp.h" #include "gui.h" #include "elhash.h" #include "buffer.h" #include "bytecode.h" Lisp_Object Qmenu_no_selection_hook; Lisp_Object Vmenu_no_selection_hook; static Lisp_Object parse_gui_item_tree_list (Lisp_Object list); Lisp_Object find_keyword_in_vector (Lisp_Object vector, Lisp_Object keyword); Lisp_Object Qgui_error; #ifdef HAVE_POPUPS /* count of menus/dboxes currently up */ int popup_up_p; DEFUN ("popup-up-p", Fpopup_up_p, 0, 0, 0, /* Return t if a popup menu or dialog box is up, nil otherwise. See `popup-menu' and `popup-dialog-box'. */ ()) { return popup_up_p ? Qt : Qnil; } #endif /* HAVE_POPUPS */ int separator_string_p (const Intbyte *s) { const Intbyte *p; Intbyte first; if (!s || s[0] == '\0') return 0; first = s[0]; if (first != '-' && first != '=') return 0; for (p = s; *p == first; p++) ; return (*p == '!' || *p == ':' || *p == '\0'); } /* Massage DATA to find the correct function and argument. Used by popup_selection_callback() and the msw code. */ void get_gui_callback (Lisp_Object data, Lisp_Object *fn, Lisp_Object *arg) { if (EQ (data, Qquit)) { *fn = Qeval; *arg = list3 (Qsignal, list2 (Qquote, Qquit), Qnil); Vquit_flag = Qt; } else if (SYMBOLP (data) || (COMPILED_FUNCTIONP (data) && XCOMPILED_FUNCTION (data)->flags.interactivep) || (CONSP (data) && (EQ (XCAR (data), Qlambda)) && !NILP (Fassq (Qinteractive, Fcdr (Fcdr (data)))))) { *fn = Qcall_interactively; *arg = data; } else if (CONSP (data)) { *fn = Qeval; *arg = data; } else { *fn = Qeval; *arg = list3 (Qsignal, list2 (Qquote, Qerror), list2 (Qquote, list2 (build_translated_string ("illegal callback"), data))); } } /* * Add a value VAL associated with keyword KEY into PGUI_ITEM * structure. If KEY is not a keyword, or is an unknown keyword, then * error is signaled. */ int gui_item_add_keyval_pair (Lisp_Object gui_item, Lisp_Object key, Lisp_Object val, Error_Behavior errb) { Lisp_Gui_Item *pgui_item = XGUI_ITEM (gui_item); int retval = 0; if (!KEYWORDP (key)) sferror_2 ("Non-keyword in gui item", key, pgui_item->name); if (EQ (key, Q_descriptor)) { if (!EQ (pgui_item->name, val)) { retval = 1; pgui_item->name = val; } } #define FROB(slot) \ else if (EQ (key, Q_##slot)) \ { \ if (!EQ (pgui_item->slot, val)) \ { \ retval = 1; \ pgui_item->slot = val; \ } \ } FROB (suffix) FROB (active) FROB (included) FROB (config) FROB (filter) FROB (style) FROB (selected) FROB (keys) FROB (callback) FROB (callback_ex) FROB (value) #undef FROB else if (EQ (key, Q_key_sequence)) ; /* ignored for FSF compatibility */ else if (EQ (key, Q_label)) ; /* ignored for 21.0 implement in 21.2 */ else if (EQ (key, Q_accelerator)) { if (!EQ (pgui_item->accelerator, val)) { retval = 1; if (SYMBOLP (val) || CHARP (val)) pgui_item->accelerator = val; else if (ERRB_EQ (errb, ERROR_ME)) invalid_argument ("Bad keyboard accelerator", val); } } else if (ERRB_EQ (errb, ERROR_ME)) invalid_argument_2 ("Unknown keyword in gui item", key, pgui_item->name); return retval; } void gui_item_init (Lisp_Object gui_item) { Lisp_Gui_Item *lp = XGUI_ITEM (gui_item); lp->name = Qnil; lp->callback = Qnil; lp->callback_ex = Qnil; lp->suffix = Qnil; lp->active = Qt; lp->included = Qt; lp->config = Qnil; lp->filter = Qnil; lp->style = Qnil; lp->selected = Qnil; lp->keys = Qnil; lp->accelerator = Qnil; lp->value = Qnil; } Lisp_Object allocate_gui_item (void) { Lisp_Gui_Item *lp = alloc_lcrecord_type (Lisp_Gui_Item, &lrecord_gui_item); Lisp_Object val; zero_lcrecord (lp); XSETGUI_ITEM (val, lp); gui_item_init (val); return val; } /* * ITEM is a lisp vector, describing a menu item or a button. The * function extracts the description of the item into the PGUI_ITEM * structure. */ static Lisp_Object make_gui_item_from_keywords_internal (Lisp_Object item, Error_Behavior errb) { int length, plist_p, start; Lisp_Object *contents; Lisp_Object gui_item = allocate_gui_item (); Lisp_Gui_Item *pgui_item = XGUI_ITEM (gui_item); CHECK_VECTOR (item); length = XVECTOR_LENGTH (item); contents = XVECTOR_DATA (item); if (length < 1) sferror ("GUI item descriptors must be at least 1 elts long", item); /* length 1: [ "name" ] length 2: [ "name" callback ] length 3: [ "name" callback active-p ] or [ "name" keyword value ] length 4: [ "name" callback active-p suffix ] or [ "name" callback keyword value ] length 5+: [ "name" callback [ keyword value ]+ ] or [ "name" [ keyword value ]+ ] */ plist_p = (length > 2 && (KEYWORDP (contents [1]) || KEYWORDP (contents [2]))); pgui_item->name = contents [0]; if (length > 1 && !KEYWORDP (contents [1])) { pgui_item->callback = contents [1]; start = 2; } else start =1; if (!plist_p && length > 2) /* the old way */ { pgui_item->active = contents [2]; if (length == 4) pgui_item->suffix = contents [3]; } else /* the new way */ { int i; if ((length - start) & 1) sferror ( "GUI item descriptor has an odd number of keywords and values", item); for (i = start; i < length;) { Lisp_Object key = contents [i++]; Lisp_Object val = contents [i++]; gui_item_add_keyval_pair (gui_item, key, val, errb); } } return gui_item; } /* This will only work with descriptors in the new format. */ Lisp_Object widget_gui_parse_item_keywords (Lisp_Object item) { int i, length; Lisp_Object *contents; Lisp_Object gui_item = allocate_gui_item (); Lisp_Object desc = find_keyword_in_vector (item, Q_descriptor); CHECK_VECTOR (item); length = XVECTOR_LENGTH (item); contents = XVECTOR_DATA (item); if (!NILP (desc) && !STRINGP (desc) && !VECTORP (desc)) sferror ("Invalid GUI item descriptor", item); if (length & 1) { if (!SYMBOLP (contents [0])) sferror ("Invalid GUI item descriptor", item); contents++; /* Ignore the leading symbol. */ length--; } for (i = 0; i < length;) { Lisp_Object key = contents [i++]; Lisp_Object val = contents [i++]; gui_item_add_keyval_pair (gui_item, key, val, ERROR_ME_NOT); } return gui_item; } /* Update a gui item from a partial descriptor. */ int update_gui_item_keywords (Lisp_Object gui_item, Lisp_Object item) { int i, length, retval = 0; Lisp_Object *contents; CHECK_VECTOR (item); length = XVECTOR_LENGTH (item); contents = XVECTOR_DATA (item); if (length & 1) { if (!SYMBOLP (contents [0])) sferror ("Invalid GUI item descriptor", item); contents++; /* Ignore the leading symbol. */ length--; } for (i = 0; i < length;) { Lisp_Object key = contents [i++]; Lisp_Object val = contents [i++]; if (gui_item_add_keyval_pair (gui_item, key, val, ERROR_ME_NOT)) retval = 1; } return retval; } Lisp_Object gui_parse_item_keywords (Lisp_Object item) { return make_gui_item_from_keywords_internal (item, ERROR_ME); } Lisp_Object gui_parse_item_keywords_no_errors (Lisp_Object item) { return make_gui_item_from_keywords_internal (item, ERROR_ME_NOT); } /* convert a gui item into plist properties */ void gui_add_item_keywords_to_plist (Lisp_Object plist, Lisp_Object gui_item) { Lisp_Gui_Item *pgui_item = XGUI_ITEM (gui_item); if (!NILP (pgui_item->callback)) Fplist_put (plist, Q_callback, pgui_item->callback); if (!NILP (pgui_item->callback_ex)) Fplist_put (plist, Q_callback_ex, pgui_item->callback_ex); if (!NILP (pgui_item->suffix)) Fplist_put (plist, Q_suffix, pgui_item->suffix); if (!NILP (pgui_item->active)) Fplist_put (plist, Q_active, pgui_item->active); if (!NILP (pgui_item->included)) Fplist_put (plist, Q_included, pgui_item->included); if (!NILP (pgui_item->config)) Fplist_put (plist, Q_config, pgui_item->config); if (!NILP (pgui_item->filter)) Fplist_put (plist, Q_filter, pgui_item->filter); if (!NILP (pgui_item->style)) Fplist_put (plist, Q_style, pgui_item->style); if (!NILP (pgui_item->selected)) Fplist_put (plist, Q_selected, pgui_item->selected); if (!NILP (pgui_item->keys)) Fplist_put (plist, Q_keys, pgui_item->keys); if (!NILP (pgui_item->accelerator)) Fplist_put (plist, Q_accelerator, pgui_item->accelerator); if (!NILP (pgui_item->value)) Fplist_put (plist, Q_value, pgui_item->value); } /* * Decide whether a GUI item is active by evaluating its :active form * if any */ int gui_item_active_p (Lisp_Object gui_item) { /* This function can call lisp */ /* Shortcut to avoid evaluating Qt each time */ return (EQ (XGUI_ITEM (gui_item)->active, Qt) || !NILP (Feval (XGUI_ITEM (gui_item)->active))); } /* set menu accelerator key to first underlined character in menu name */ Lisp_Object gui_item_accelerator (Lisp_Object gui_item) { Lisp_Gui_Item *pgui = XGUI_ITEM (gui_item); if (!NILP (pgui->accelerator)) return pgui->accelerator; else return gui_name_accelerator (pgui->name); } Lisp_Object gui_name_accelerator (Lisp_Object nm) { Intbyte *name = XSTRING_DATA (nm); while (*name) { if (*name == '%') { ++name; if (!(*name)) return Qnil; if (*name == '_' && *(name + 1)) { Emchar accelerator = charptr_emchar (name + 1); /* #### bogus current_buffer dependency */ return make_char (DOWNCASE (current_buffer, accelerator)); } } INC_CHARPTR (name); } return make_char (DOWNCASE (current_buffer, charptr_emchar (XSTRING_DATA (nm)))); } /* * Decide whether a GUI item is selected by evaluating its :selected form * if any */ int gui_item_selected_p (Lisp_Object gui_item) { /* This function can call lisp */ /* Shortcut to avoid evaluating Qt each time */ return (EQ (XGUI_ITEM (gui_item)->selected, Qt) || !NILP (Feval (XGUI_ITEM (gui_item)->selected))); } Lisp_Object gui_item_list_find_selected (Lisp_Object gui_item_list) { /* This function can GC. */ Lisp_Object rest; LIST_LOOP (rest, gui_item_list) { if (gui_item_selected_p (XCAR (rest))) return XCAR (rest); } return XCAR (gui_item_list); } /* * Decide whether a GUI item is included by evaluating its :included * form if given, and testing its :config form against supplied CONFLIST * configuration variable */ int gui_item_included_p (Lisp_Object gui_item, Lisp_Object conflist) { /* This function can call lisp */ Lisp_Gui_Item *pgui_item = XGUI_ITEM (gui_item); /* Evaluate :included first. Shortcut to avoid evaluating Qt each time */ if (!EQ (pgui_item->included, Qt) && NILP (Feval (pgui_item->included))) return 0; /* Do :config if conflist is given */ if (!NILP (conflist) && !NILP (pgui_item->config) && NILP (Fmemq (pgui_item->config, conflist))) return 0; return 1; } static DOESNT_RETURN signal_too_long_error (Lisp_Object name) { invalid_argument ("GUI item produces too long displayable string", name); } #ifdef HAVE_WINDOW_SYSTEM /* * Format "left flush" display portion of an item into BUF, guarded by * maximum buffer size BUF_LEN. BUF_LEN does not count for terminating * null character, so actual maximum size of buffer consumed is * BUF_LEN + 1 bytes. If buffer is not big enough, then error is * signaled. * Return value is the offset to the terminating null character into the * buffer. */ Bytecount gui_item_display_flush_left (Lisp_Object gui_item, char *buf, Bytecount buf_len) { /* This function can call lisp */ char *p = buf; Bytecount len; Lisp_Gui_Item *pgui_item = XGUI_ITEM (gui_item); /* Copy item name first */ CHECK_STRING (pgui_item->name); len = XSTRING_LENGTH (pgui_item->name); if (len > buf_len) signal_too_long_error (pgui_item->name); memcpy (p, XSTRING_DATA (pgui_item->name), len); p += len; /* Add space and suffix, if there is a suffix. * If suffix is not string evaluate it */ if (!NILP (pgui_item->suffix)) { Lisp_Object suffix = pgui_item->suffix; /* Shortcut to avoid evaluating suffix each time */ if (!STRINGP (suffix)) { suffix = Feval (suffix); CHECK_STRING (suffix); } len = XSTRING_LENGTH (suffix); if (p + len + 1 > buf + buf_len) signal_too_long_error (pgui_item->name); *(p++) = ' '; memcpy (p, XSTRING_DATA (suffix), len); p += len; } *p = '\0'; return p - buf; } /* * Format "right flush" display portion of an item into BUF, guarded by * maximum buffer size BUF_LEN. BUF_LEN does not count for terminating * null character, so actual maximum size of buffer consumed is * BUF_LEN + 1 bytes. If buffer is not big enough, then error is * signaled. * Return value is the offset to the terminating null character into the * buffer. */ Bytecount gui_item_display_flush_right (Lisp_Object gui_item, char *buf, Bytecount buf_len) { Lisp_Gui_Item *pgui_item = XGUI_ITEM (gui_item); *buf = 0; #ifdef HAVE_MENUBARS /* Have keys? */ if (!menubar_show_keybindings) return 0; #endif /* Try :keys first */ if (!NILP (pgui_item->keys)) { CHECK_STRING (pgui_item->keys); if (XSTRING_LENGTH (pgui_item->keys) + 1 > buf_len) signal_too_long_error (pgui_item->name); memcpy (buf, XSTRING_DATA (pgui_item->keys), XSTRING_LENGTH (pgui_item->keys) + 1); return XSTRING_LENGTH (pgui_item->keys); } /* See if we can derive keys out of callback symbol */ if (SYMBOLP (pgui_item->callback)) { char buf2[1024]; /* #### */ Bytecount len; where_is_to_char (pgui_item->callback, buf2); len = strlen (buf2); if (len > buf_len) signal_too_long_error (pgui_item->name); strcpy (buf, buf2); return len; } /* No keys - no right flush display */ return 0; } #endif /* HAVE_WINDOW_SYSTEM */ static Lisp_Object mark_gui_item (Lisp_Object obj) { Lisp_Gui_Item *p = XGUI_ITEM (obj); mark_object (p->name); mark_object (p->callback); mark_object (p->callback_ex); mark_object (p->config); mark_object (p->suffix); mark_object (p->active); mark_object (p->included); mark_object (p->config); mark_object (p->filter); mark_object (p->style); mark_object (p->selected); mark_object (p->keys); mark_object (p->accelerator); mark_object (p->value); return Qnil; } static Hashcode gui_item_hash (Lisp_Object obj, int depth) { Lisp_Gui_Item *p = XGUI_ITEM (obj); return HASH2 (HASH6 (internal_hash (p->name, depth + 1), internal_hash (p->callback, depth + 1), internal_hash (p->callback_ex, depth + 1), internal_hash (p->suffix, depth + 1), internal_hash (p->active, depth + 1), internal_hash (p->included, depth + 1)), HASH6 (internal_hash (p->config, depth + 1), internal_hash (p->filter, depth + 1), internal_hash (p->style, depth + 1), internal_hash (p->selected, depth + 1), internal_hash (p->keys, depth + 1), internal_hash (p->value, depth + 1))); } int gui_item_id_hash (Lisp_Object hashtable, Lisp_Object gitem, int slot) { int hashid = gui_item_hash (gitem, 0); int id = GUI_ITEM_ID_BITS (hashid, slot); while (!NILP (Fgethash (make_int (id), hashtable, Qnil))) { id = GUI_ITEM_ID_BITS (id + 1, slot); } return id; } int gui_item_equal_sans_selected (Lisp_Object obj1, Lisp_Object obj2, int depth) { Lisp_Gui_Item *p1 = XGUI_ITEM (obj1); Lisp_Gui_Item *p2 = XGUI_ITEM (obj2); if (!(internal_equal (p1->name, p2->name, depth + 1) && internal_equal (p1->callback, p2->callback, depth + 1) && internal_equal (p1->callback_ex, p2->callback_ex, depth + 1) && EQ (p1->suffix, p2->suffix) && EQ (p1->active, p2->active) && EQ (p1->included, p2->included) && EQ (p1->config, p2->config) && EQ (p1->filter, p2->filter) && EQ (p1->style, p2->style) && EQ (p1->accelerator, p2->accelerator) && EQ (p1->keys, p2->keys) && EQ (p1->value, p2->value))) return 0; return 1; } static int gui_item_equal (Lisp_Object obj1, Lisp_Object obj2, int depth) { Lisp_Gui_Item *p1 = XGUI_ITEM (obj1); Lisp_Gui_Item *p2 = XGUI_ITEM (obj2); if (!(gui_item_equal_sans_selected (obj1, obj2, depth) && EQ (p1->selected, p2->selected))) return 0; return 1; } static void print_gui_item (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag) { Lisp_Gui_Item *g = XGUI_ITEM (obj); char buf[20]; if (print_readably) printing_unreadable_object ("#<gui-item 0x%x>", g->header.uid); write_c_string ("#<gui-item ", printcharfun); sprintf (buf, "0x%x>", g->header.uid); write_c_string (buf, printcharfun); } Lisp_Object copy_gui_item (Lisp_Object gui_item) { Lisp_Object ret = allocate_gui_item (); Lisp_Gui_Item *lp, *g = XGUI_ITEM (gui_item); lp = XGUI_ITEM (ret); lp->name = g->name; lp->callback = g->callback; lp->callback_ex = g->callback_ex; lp->suffix = g->suffix; lp->active = g->active; lp->included = g->included; lp->config = g->config; lp->filter = g->filter; lp->style = g->style; lp->selected = g->selected; lp->keys = g->keys; lp->accelerator = g->accelerator; lp->value = g->value; return ret; } Lisp_Object copy_gui_item_tree (Lisp_Object arg) { if (CONSP (arg)) { Lisp_Object rest = arg = Fcopy_sequence (arg); while (CONSP (rest)) { XCAR (rest) = copy_gui_item_tree (XCAR (rest)); rest = XCDR (rest); } return arg; } else if (GUI_ITEMP (arg)) return copy_gui_item (arg); else return arg; } /* parse a glyph descriptor into a tree of gui items. The gui_item slot of an image instance can be a single item or an arbitrarily nested hierarchy of item lists. */ static Lisp_Object parse_gui_item_tree_item (Lisp_Object entry) { Lisp_Object ret = entry; struct gcpro gcpro1; GCPRO1 (ret); if (VECTORP (entry)) { ret = gui_parse_item_keywords_no_errors (entry); } else if (STRINGP (entry)) { CHECK_STRING (entry); } else sferror ("item must be a vector or a string", entry); RETURN_UNGCPRO (ret); } Lisp_Object parse_gui_item_tree_children (Lisp_Object list) { Lisp_Object rest, ret = Qnil, sub = Qnil; struct gcpro gcpro1, gcpro2; GCPRO2 (ret, sub); CHECK_CONS (list); /* recursively add items to the tree view */ LIST_LOOP (rest, list) { if (CONSP (XCAR (rest))) sub = parse_gui_item_tree_list (XCAR (rest)); else sub = parse_gui_item_tree_item (XCAR (rest)); ret = Fcons (sub, ret); } /* make the order the same as the items we have parsed */ RETURN_UNGCPRO (Fnreverse (ret)); } static Lisp_Object parse_gui_item_tree_list (Lisp_Object list) { Lisp_Object ret; struct gcpro gcpro1; CHECK_CONS (list); /* first one can never be a list */ ret = parse_gui_item_tree_item (XCAR (list)); GCPRO1 (ret); ret = Fcons (ret, parse_gui_item_tree_children (XCDR (list))); RETURN_UNGCPRO (ret); } static void finalize_gui_item (void* header, int for_disksave) { } DEFINE_LRECORD_IMPLEMENTATION ("gui-item", gui_item, mark_gui_item, print_gui_item, finalize_gui_item, gui_item_equal, gui_item_hash, 0, Lisp_Gui_Item); DOESNT_RETURN gui_error (const char *reason, Lisp_Object frob) { signal_error (Qgui_error, reason, frob); } DOESNT_RETURN gui_error_2 (const char *reason, Lisp_Object frob0, Lisp_Object frob1) { signal_error_2 (Qgui_error, reason, frob0, frob1); } void syms_of_gui (void) { INIT_LRECORD_IMPLEMENTATION (gui_item); DEFSYMBOL (Qmenu_no_selection_hook); DEFERROR_STANDARD (Qgui_error, Qio_error); #ifdef HAVE_POPUPS DEFSUBR (Fpopup_up_p); #endif } void vars_of_gui (void) { DEFVAR_LISP ("menu-no-selection-hook", &Vmenu_no_selection_hook /* Function or functions to call when a menu or dialog box is dismissed without a selection having been made. */ ); Vmenu_no_selection_hook = Qnil; }