1 ;;; sup-mouse.el --- supdup mouse support for lisp machines
3 ;; Copyright (C) Free Software Foundation 1985, 1986
5 ;; Author: Wolfgang Rupprecht
7 ;; Created: 21 Nov 1986
10 ;; (from code originally written by John Robinson@bbn for the bitgraph)
12 ;; This file is part of GNU Emacs.
14 ;; GNU Emacs is free software; you can redistribute it and/or modify
15 ;; it under the terms of the GNU General Public License as published by
16 ;; the Free Software Foundation; either version 2, or (at your option)
19 ;; GNU Emacs is distributed in the hope that it will be useful,
20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 ;; GNU General Public License for more details.
24 ;; You should have received a copy of the GNU General Public License
25 ;; along with GNU Emacs; see the file COPYING. If not, write to
26 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
30 ;;; User customization option:
32 (defvar sup-mouse-fast-select-window nil
33 "*Non-nil for mouse hits to select new window, then execute; else just select.")
35 (defconst mouse-left 0)
36 (defconst mouse-center 1)
37 (defconst mouse-right 2)
39 (defconst mouse-2left 4)
40 (defconst mouse-2center 5)
41 (defconst mouse-2right 6)
43 (defconst mouse-3left 8)
44 (defconst mouse-3center 9)
45 (defconst mouse-3right 10)
49 (defun sup-mouse-report ()
50 "This function is called directly by the mouse, it parses and
51 executes the mouse commands.
53 L move point * |---- These apply for mouse click in a window.
55 3L copy word | If sup-mouse-fast-select-window is nil,
56 C move point and yank * | just selects that window.
62 on modeline on \"scroll bar\" in minibuffer
63 L scroll-up line to top execute-extended-command
64 C proportional goto-char line to middle mouse-help
65 R scroll-down line to bottom eval-expression"
69 ;; expect a string of <esc>:<buttons>;<x-pos>;<y-pos>c
70 ((buttons (sup-get-tty-num ?\;))
71 (x (sup-get-tty-num ?\;))
72 (y (sup-get-tty-num ?c))
73 (window (sup-pos-to-window x y))
74 (edges (window-edges window))
75 (old-window (selected-window))
76 (in-minibuf-p (eq y (1- (frame-height))))
77 (same-window-p (and (not in-minibuf-p) (eq window old-window)))
78 (in-modeline-p (eq y (1- (nth 3 edges))))
79 (in-scrollbar-p (>= x (1- (nth 2 edges)))))
80 (setq x (- x (nth 0 edges)))
81 (setq y (- y (nth 1 edges)))
83 ; (error "mouse-hit %d %d %d" buttons x y) ;;;; debug
86 (select-window window)
87 (cond ((= buttons mouse-left)
89 ((= buttons mouse-right)
91 ((= buttons mouse-center)
93 (- (point-max) (point-min)))
96 (what-cursor-position)))
97 (select-window old-window))
99 (select-window window)
101 (cond ((= buttons mouse-left)
103 ((= buttons mouse-right)
104 (+ y (- 2 (window-height))))
105 ((= buttons mouse-center)
106 (/ (+ 2 y y (- (window-height))) 2))
109 (select-window old-window))
111 (cond ((= buttons mouse-left)
112 (sup-move-point-to-x-y x y))
113 ((= buttons mouse-2left)
114 (sup-move-point-to-x-y x y)
116 ((= buttons mouse-3left)
117 (sup-move-point-to-x-y x y)
120 (point) (progn (forward-word 1) (point))))
121 (setq this-command 'yank)
123 ((= buttons mouse-right)
125 (sup-move-point-to-x-y x y)
126 (exchange-point-and-mark))
127 ((= buttons mouse-2right)
129 (sup-move-point-to-x-y x y)
130 (kill-region (mark) (point)))
131 ((= buttons mouse-3right)
133 (sup-move-point-to-x-y x y)
134 (copy-region-as-kill (mark) (point))
135 (setq this-command 'yank))
136 ((= buttons mouse-center)
137 (sup-move-point-to-x-y x y)
138 (setq this-command 'yank)
140 ((= buttons mouse-2center)
145 (cond ((= buttons mouse-right)
146 (call-interactively 'eval-expression))
147 ((= buttons mouse-left)
148 (call-interactively 'execute-extended-command))
149 ((= buttons mouse-center)
150 (describe-function 'sup-mouse-report)); silly self help
152 (t ;in another window
153 (select-window window)
154 (cond ((not sup-mouse-fast-select-window))
155 ((= buttons mouse-left)
156 (sup-move-point-to-x-y x y))
157 ((= buttons mouse-right)
159 (sup-move-point-to-x-y x y)
160 (exchange-point-and-mark))
161 ((= buttons mouse-center)
162 (sup-move-point-to-x-y x y)
163 (setq this-command 'yank)
169 (defun sup-get-tty-num (term-char)
170 "Read from terminal until TERM-CHAR is read, and return intervening number.
171 Upon non-numeric not matching TERM-CHAR signal an error."
175 (while (and (>= char ?0)
177 (setq num (+ (* num 10) (- char ?0)))
178 (setq char (read-char)))
179 (or (eq term-char char)
180 (error "Invalid data format in mouse command"))
183 (defun sup-move-point-to-x-y (x y)
184 "Position cursor in window coordinates.
185 X and Y are 0-based character positions in the window."
186 (move-to-window-line y)
190 (defun sup-pos-to-window (x y)
191 "Find window corresponding to frame coordinates.
192 X and Y are 0-based character positions on the frame."
193 (let ((edges (window-edges))
195 (while (and (not (eq window (selected-window)))
196 (or (< y (nth 1 edges))
199 (>= x (nth 2 edges))))
200 (setq window (next-window window))
201 (setq edges (window-edges window))
203 (or window (selected-window))
207 ;;; sup-mouse.el ends here