;;; x-dnd.el --- drag and drop support for X -*- coding: utf-8 -*-
-;; Copyright (C) 2004-2011 Free Software Foundation, Inc.
+;; Copyright (C) 2004-2012 Free Software Foundation, Inc.
;; Author: Jan Djärv <jan.h.d@swipnet.se>
;; Maintainer: FSF
"Return the x/y coordinates to be sent in a XDndStatus message.
Coordinates are required to be absolute.
FRAME is the frame and W is the window where the drop happened.
-If W is a window, return its absolute corrdinates,
+If W is a window, return its absolute coordinates,
otherwise return the frame coordinates."
(let* ((frame-left (frame-parameter frame 'left))
;; If the frame is outside the display, frame-left looks like
(declare-function x-get-selection-internal "xselect.c"
(selection-symbol target-type &optional time-stamp))
+(defun x-dnd-version-from-flags (flags)
+ "Return the version byte from the 32 bit FLAGS in an XDndEnter message"
+ (if (consp flags) ;; Long as cons
+ (ash (car flags) -8)
+ (ash flags -24))) ;; Ordinary number
+
+(defun x-dnd-more-than-3-from-flags (flags)
+ "Return the nmore-than3 bit from the 32 bit FLAGS in an XDndEnter message"
+ (if (consp flags)
+ (logand (cdr flags) 1)
+ (logand flags 1)))
+
(defun x-dnd-handle-xdnd (event frame window message _format data)
"Receive one XDND event (client message) and send the appropriate reply.
EVENT is the client message. FRAME is where the mouse is now.
FORMAT is 32 (not used). MESSAGE is the data part of an XClientMessageEvent."
(cond ((equal "XdndEnter" message)
(let* ((flags (aref data 1))
- (version (and (consp flags) (ash (car flags) -8)))
- (more-than-3 (and (consp flags) (cdr flags)))
+ (version (x-dnd-version-from-flags flags))
+ (more-than-3 (x-dnd-more-than-3-from-flags flags))
(dnd-source (aref data 0)))
+ (message "%s %s" version more-than-3)
(if version ;; If flags is bad, version will be nil.
(x-dnd-save-state
window nil nil