Added within-main-loop and call-from-main-loop macros; ensured single initialization...

[cl-gtk2.git] / gtk / gtk.misc.lisp

diff --git a/gtk/gtk.misc.lisp b/gtk/gtk.misc.lisp
index 0c8cff1..81dd06d 100644 (file)
--- a/gtk/gtk.misc.lisp
+++ b/gtk/gtk.misc.lisp
@@ -6,4 +6,24 @@
 (defcfun (get-clipboard "gtk_clipboard_get") g-object
   (selection gdk-atom-as-string))
 
-(export 'get-clipboard)
\ No newline at end of file
+(export 'get-clipboard)
+
+(defcallback call-from-main-loop-callback :boolean
+    ((data :pointer))
+  (restart-case
+      (progn (funcall (get-stable-pointer-value data))
+             nil)
+    (return-from-callback () nil)))
+
+(defun call-from-gtk-main-loop (function &key (priority +g-priority-default-idle+))
+  (g-idle-add-full priority
+                   (callback call-from-main-loop-callback)
+                   (allocate-stable-pointer function)
+                   (callback stable-pointer-free-destroy-notify-callback)))
+
+(export 'call-from-gtk-main-loop)
+
+(defmacro within-main-loop (&body body)
+  `(call-from-gtk-main-loop (lambda () ,@body)))
+
+(export 'within-main-loop)
\ No newline at end of file