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 SXEmacs.
10 ;; SXEmacs is free software: you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation, either version 3 of the License, or
13 ;; (at your option) any later version.
15 ;; SXEmacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with this program. If not, see <http://www.gnu.org/licenses/>.
23 ;;; Synched up with: Not in FSF
27 ;; This file is dumped with SXEmacs.
29 (defvar gtk-type-aliases '((GtkType . guint)
31 (GdkBitmap . GdkWindow)
34 (GdkDrawable . GdkWindow)
35 (GdkBitmap . GdkWindow)
36 (GdkPixmap . GdkWindow))
37 "An assoc list of aliases for commonly used GTK types that are not
38 really part of the object system.")
40 (defvar gtk-ffi-debug nil
41 "If non-nil, all functions defined wiht `gtk-import-function' will be checked
42 for missing marshallers.")
44 (defun gtk-ffi-check-function (func)
45 ;; We don't call gtk-main or gtk-main-quit because it thoroughly
46 ;; hoses us (locks up xemacs handling events, but no lisp).
47 (if (not (memq func '(gtk-main gtk-main-quit)))
52 (wrong-number-of-arguments nil)
54 (if (string= "Could not locate marshaller function" (nth 1 err))
56 (set-buffer (get-buffer-create "needed marshallers"))
57 (display-buffer (current-buffer))
58 (goto-char (point-max))
62 (substring (nth 2 err) (length "emacs_gtk_marshal_")) "_+")))))))))))
64 (defmacro gtk-import-function (retval name &rest args)
66 (setq name (symbol-name name)))
67 (let ((lisp-name (intern (replace-in-string name "_" "-")))
69 (setq retval (or (cdr-safe (assoc retval gtk-type-aliases)) retval)
70 doc-string (concat "The lisp version of " name ".\n"
72 (concat "Prototype: " (prin1-to-string args)))))
74 ;; Drop off any naming of arguments, etc.
75 (if (and args (consp (car args)))
76 (setq args (mapcar 'car args)))
78 ;; Get rid of any type aliases.
79 (setq args (mapcar (lambda (x)
80 (or (cdr-safe (assoc x gtk-type-aliases)) x)) args))
83 (defun ,lisp-name (&rest args)
85 (if (not (get (quote ,lisp-name) 'gtk-ffi nil))
86 (put (quote ,lisp-name) 'gtk-ffi
87 (gtk-import-function-internal (quote ,retval) ,name
89 (gtk-call-function (get (quote ,lisp-name) 'gtk-ffi 'ignore) args))
90 (and gtk-ffi-debug (gtk-ffi-check-function (quote ,lisp-name))))))
92 (defmacro gtk-import-variable (type name)
93 (if (symbolp name) (setq name (symbol-name name)))
94 (let ((lisp-name (intern (replace-in-string name "_" "-")))
96 (setq type (or (cdr-safe (assoc type gtk-type-aliases)) type)
97 doc-string (concat "Retrieve the variable " name " (type: " (symbol-name type) ").\n"))
100 (gtk-import-variable-internal (quote ,type) ,name))))