1 ;;; gtk-ffi.el --- Foreign function interface for the GTK object system
3 ;; Copyright (C) 2000 Free Software Foundation
5 ;; Maintainer: William Perry <wmperry@gnu.org>
6 ;; Keywords: extensions, dumped
8 ;; This file is part of XEmacs.
10 ;; XEmacs is free software; you can redistribute it and/or modify it
11 ;; under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; XEmacs is distributed in the hope that it will be useful, but
16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 ;; General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with XEmacs; see the file COPYING. If not, write to the Free
22 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 ;;; Synched up with: Not in FSF
29 ;; This file is dumped with XEmacs.
31 (defvar gtk-type-aliases '((GtkType . guint)
33 (GdkBitmap . GdkWindow)
36 (GdkDrawable . GdkWindow)
37 (GdkBitmap . GdkWindow)
38 (GdkPixmap . GdkWindow))
39 "An assoc list of aliases for commonly used GTK types that are not
40 really part of the object system.")
42 (defvar gtk-ffi-debug nil
43 "If non-nil, all functions defined wiht `gtk-import-function' will be checked
44 for missing marshallers.")
46 (defun gtk-ffi-check-function (func)
47 ;; We don't call gtk-main or gtk-main-quit because it thoroughly
48 ;; hoses us (locks up xemacs handling events, but no lisp).
49 (if (not (memq func '(gtk-main gtk-main-quit)))
54 (wrong-number-of-arguments nil)
56 (if (string= "Could not locate marshaller function" (nth 1 err))
58 (set-buffer (get-buffer-create "needed marshallers"))
59 (display-buffer (current-buffer))
60 (goto-char (point-max))
64 (substring (nth 2 err) (length "emacs_gtk_marshal_")) "_+")))))))))))
66 (defmacro gtk-import-function (retval name &rest args)
68 (setq name (symbol-name name)))
69 (let ((lisp-name (intern (replace-in-string name "_" "-")))
71 (setq retval (or (cdr-safe (assoc retval gtk-type-aliases)) retval)
72 doc-string (concat "The lisp version of " name ".\n"
74 (concat "Prototype: " (prin1-to-string args)))))
76 ;; Drop off any naming of arguments, etc.
77 (if (and args (consp (car args)))
78 (setq args (mapcar 'car args)))
80 ;; Get rid of any type aliases.
81 (setq args (mapcar (lambda (x)
82 (or (cdr-safe (assoc x gtk-type-aliases)) x)) args))
85 (defun ,lisp-name (&rest args)
87 (if (not (get (quote ,lisp-name) 'gtk-ffi nil))
88 (put (quote ,lisp-name) 'gtk-ffi
89 (gtk-import-function-internal (quote ,retval) ,name
91 (gtk-call-function (get (quote ,lisp-name) 'gtk-ffi 'ignore) args))
92 (and gtk-ffi-debug (gtk-ffi-check-function (quote ,lisp-name))))))
94 (defmacro gtk-import-variable (type name)
95 (if (symbolp name) (setq name (symbol-name name)))
96 (let ((lisp-name (intern (replace-in-string name "_" "-")))
98 (setq type (or (cdr-safe (assoc type gtk-type-aliases)) type)
99 doc-string (concat "Retrieve the variable " name " (type: " (symbol-name type) ").\n"))
100 `(defun ,lisp-name ()
102 (gtk-import-variable-internal (quote ,type) ,name))))