-;;; xt-mouse.el --- Support the mouse when emacs run in an xterm.
+;;; xt-mouse.el --- support the mouse when emacs run in an xterm
-;; Copyright (C) 1994 Free Software Foundation
+;; Copyright (C) 1994, 2000, 2001 Free Software Foundation
;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
;; Keywords: mouse, terminals
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
-;;; Comments:
+;;; Commentary:
;; Enable mouse support when running inside an xterm or Linux console.
;; Clicking on the mode-line does not work, although it should.
-;;; Code:
+;;; Code:
(define-key function-key-map "\e[M" 'xterm-mouse-translate)
(defvar xterm-mouse-last)
(defun xterm-mouse-translate (event)
- ;; Read a click and release event from XTerm.
+ "Read a click and release event from XTerm."
(save-excursion
(save-window-excursion
(deactivate-mark)
(down-where (nth 1 down-data))
(down-binding (key-binding (if (symbolp down-where)
(vector down-where down-command)
- (vector down-command)))))
- (or (and (eq (read-char) ?\e)
- (eq (read-char) ?\[)
- (eq (read-char) ?M))
- (error "Unexpected escape sequence from XTerm"))
- (let* ((click (xterm-mouse-event))
+ (vector down-command))))
+ (is-click (string-match "^mouse" (symbol-name (car down)))))
+
+ (unless is-click
+ (unless (and (eq (read-char) ?\e)
+ (eq (read-char) ?\[)
+ (eq (read-char) ?M))
+ (error "Unexpected escape sequence from XTerm")))
+
+ (let* ((click (if is-click down (xterm-mouse-event)))
(click-command (nth 0 click))
(click-data (nth 1 click))
(click-where (nth 1 click-data)))
;; Generate a drag event.
(if (symbolp down-where)
0
- (list (intern (concat "drag-mouse-" (+ 1 xterm-mouse-last)))
+ (list (intern (format "drag-mouse-%d"
+ (+ 1 xterm-mouse-last)))
down-data click-data))
)))
(if (and (symbolp down-where)
(defvar xterm-mouse-y 0
"Position of last xterm mouse event relative to the frame.")
-(defadvice mouse-position (around xterm-mouse activate)
- "Use last key from xterm-mouse-mode if available."
- (let ((answer ad-do-it))
- (setq ad-return-value
- (if xterm-mouse-mode
- (cons (car answer) (cons xterm-mouse-x xterm-mouse-y))
- answer))))
+;; Indicator for the xterm-mouse mode.
+(defvar xterm-mouse-mode nil)
+
+(defun xterm-mouse-position-function (pos)
+ "Bound to `mouse-position-function' in XTerm mouse mode."
+ (setcdr pos (cons xterm-mouse-x xterm-mouse-y))
+ pos)
(defun xterm-mouse-event ()
- ;; Convert XTerm mouse event to Emacs mouse event.
- (let* ((type (- (read-char) ? ))
- (x (- (read-char) ? 1))
- (y (- (read-char) ? 1))
+ "Convert XTerm mouse event to Emacs mouse event."
+ (let* ((type (- (read-char) #o40))
+ (x (- (read-char) #o40 1))
+ (y (- (read-char) #o40 1))
(point (cons x y))
(window (window-at x y))
- (where (if window
+ (where (if window
(coordinates-in-window-p point window)
'menu-bar))
(pos (if (consp where)
(progn
(select-window window)
(goto-char (window-start window))
- (move-to-window-line (cdr where))
+ (move-to-window-line (-
+ (cdr where)
+ (if (or header-line-format
+ default-header-line-format)
+ 1
+ 0)))
(move-to-column (+ (car where) (current-column)
(if (string-match "\\` \\*Minibuf"
(buffer-name))
(max 0 (1- (window-hscroll)))))
(point))
where))
- (mouse (intern (if (eq type 3)
- (concat "mouse-" (+ 1 xterm-mouse-last))
- (setq xterm-mouse-last type)
- (concat "down-mouse-" (+ 1 type))))))
+ (mouse (intern
+ ;; For buttons > 3, the release-event looks
+ ;; differently (see xc/programs/xterm/button.c,
+ ;; function EditorButton), and there seems to come in
+ ;; a release-event only, no down-event.
+ (cond ((>= type 64)
+ (format "mouse-%d" (- type 60)))
+ ((= type 3)
+ (format "mouse-%d" (+ 1 xterm-mouse-last)))
+ (t
+ (setq xterm-mouse-last type)
+ (format "down-mouse-%d" (+ 1 type)))))))
(setq xterm-mouse-x x
xterm-mouse-y y)
(list mouse
(list window pos point
(/ (nth 2 (current-time)) 1000)))))
-;; Indicator for the xterm-mouse mode.
-(defvar xterm-mouse-mode nil)
-
(or (assq 'xterm-mouse-mode minor-mode-alist)
(setq minor-mode-alist
(cons '(xterm-mouse-mode (" Mouse")) minor-mode-alist)))
(if xterm-mouse-mode
(progn
(turn-off-xterm-mouse-tracking)
- (setq xterm-mouse-mode nil)
+ (setq xterm-mouse-mode nil
+ mouse-position-function nil)
(set-buffer-modified-p (buffer-modified-p))))
;;Turn it on
- (if xterm-mouse-mode
- ()
- (setq xterm-mouse-mode t)
+ (unless (or window-system xterm-mouse-mode)
+ (setq xterm-mouse-mode t
+ mouse-position-function #'xterm-mouse-position-function)
(turn-on-xterm-mouse-tracking)
(set-buffer-modified-p (buffer-modified-p)))))
(defun turn-on-xterm-mouse-tracking ()
- ;; Enable emacs mouse tracking in xterm.
+ "Enable Emacs mouse tracking in xterm."
(if xterm-mouse-mode
(send-string-to-terminal "\e[?1000h")))
(defun turn-off-xterm-mouse-tracking ()
- ;; Disable disable emacs mouse tracking in xterm.
+ "Disable disable Emacs mouse tracking in xterm."
(if xterm-mouse-mode
(send-string-to-terminal "\e[?1000l")))