lisp/term/sup-mouse.el

   1 ;;; sup-mouse.el --- supdup mouse support for lisp machines
   2
   3 ;; Copyright (C) Free Software Foundation 1985, 1986
   4
   5 ;; Author: Wolfgang Rupprecht
   6 ;; Maintainer: FSF
   7 ;; Created: 21 Nov 1986
   8 ;; Keywords: hardware
   9
  10 ;;     (from code originally written by John Robinson@bbn for the bitgraph)
  11
  12 ;; This file is part of GNU Emacs.
  13
  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)
  17 ;; any later version.
  18
  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.
  23
  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 the
  26 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  27 ;; Boston, MA 02111-1307, USA.
  28
  29 ;;; Commentary:
  30
  31 ;;; Code:
  32
  33 ;;;  User customization option:
  34
  35 (defvar sup-mouse-fast-select-window nil
  36   "*Non-nil for mouse hits to select new window, then execute; else just select.")
  37
  38 (defconst mouse-left 0)
  39 (defconst mouse-center 1)
  40 (defconst mouse-right 2)
  41
  42 (defconst mouse-2left 4)
  43 (defconst mouse-2center 5)
  44 (defconst mouse-2right 6)
  45
  46 (defconst mouse-3left 8)
  47 (defconst mouse-3center 9)
  48 (defconst mouse-3right 10)
  49
  50 ;;;  Defuns:
  51
  52 (defun sup-mouse-report ()
  53   "This function is called directly by the mouse, it parses and
  54 executes the mouse commands.
  55
  56  L move point          *  |---- These apply for mouse click in a window.
  57 2L delete word            |
  58 3L copy word              | If sup-mouse-fast-select-window is nil,
  59  C move point and yank *  | just selects that window.
  60 2C yank pop               |
  61  R set mark            *  |
  62 2R delete region          |
  63 3R copy region            |
  64
  65 on modeline                 on \"scroll bar\"   in minibuffer
  66  L scroll-up                line to top         execute-extended-command
  67  C proportional goto-char   line to middle      mouse-help
  68  R scroll-down              line to bottom      eval-expression"
  69
  70   (interactive)
  71   (let*
  72 ;; expect a string of <esc>:<buttons>;<x-pos>;<y-pos>c
  73       ((buttons (sup-get-tty-num ?\;))
  74        (x (sup-get-tty-num ?\;))
  75        (y (sup-get-tty-num ?c))
  76        (window (sup-pos-to-window x y))
  77        (edges (window-edges window))
  78        (old-window (selected-window))
  79        (in-minibuf-p (eq y (1- (frame-height))))
  80        (same-window-p (and (not in-minibuf-p) (eq window old-window)))
  81        (in-modeline-p (eq y (1- (nth 3 edges))))
  82        (in-scrollbar-p (>= x (1- (nth 2 edges)))))
  83     (setq x (- x (nth 0 edges)))
  84     (setq y (- y (nth 1 edges)))
  85
  86 ;    (error "mouse-hit %d %d %d" buttons x y) ;;;; debug
  87
  88     (cond (in-modeline-p
  89            (select-window window)
  90            (cond ((= buttons mouse-left)
  91                   (scroll-up))
  92                  ((= buttons mouse-right)
  93                   (scroll-down))
  94                  ((= buttons mouse-center)
  95                   (goto-char (/ (* x
  96                                    (- (point-max) (point-min)))
  97                                 (1- (window-width))))
  98                   (beginning-of-line)
  99                   (what-cursor-position)))
 100            (select-window old-window))
 101           (in-scrollbar-p
 102            (select-window window)
 103            (scroll-up
 104             (cond ((= buttons mouse-left)
 105                    y)
 106                   ((= buttons mouse-right)
 107                    (+ y (- 2 (window-height))))
 108                   ((= buttons mouse-center)
 109                    (/ (+ 2 y y (- (window-height))) 2))
 110                   (t
 111                    0)))
 112            (select-window old-window))
 113           (same-window-p
 114            (cond ((= buttons mouse-left)
 115                   (sup-move-point-to-x-y x y))
 116                  ((= buttons mouse-2left)
 117                   (sup-move-point-to-x-y x y)
 118                   (kill-word 1))
 119                  ((= buttons mouse-3left)
 120                   (sup-move-point-to-x-y x y)
 121                   (save-excursion
 122                     (copy-region-as-kill
 123                      (point) (progn (forward-word 1) (point))))
 124                   (setq this-command 'yank)
 125                   )
 126                  ((= buttons mouse-right)
 127                   (push-mark)
 128                   (sup-move-point-to-x-y x y)
 129                   (exchange-point-and-mark))
 130                  ((= buttons mouse-2right)
 131                   (push-mark)
 132                   (sup-move-point-to-x-y x y)
 133                   (kill-region (mark) (point)))
 134                  ((= buttons mouse-3right)
 135                   (push-mark)
 136                   (sup-move-point-to-x-y x y)
 137                   (copy-region-as-kill (mark) (point))
 138                   (setq this-command 'yank))
 139                  ((= buttons mouse-center)
 140                   (sup-move-point-to-x-y x y)
 141                   (setq this-command 'yank)
 142                   (yank))
 143                  ((= buttons mouse-2center)
 144                   (yank-pop 1))
 145                  )
 146            )
 147           (in-minibuf-p
 148            (cond ((= buttons mouse-right)
 149                   (call-interactively 'eval-expression))
 150                  ((= buttons mouse-left)
 151                   (call-interactively 'execute-extended-command))
 152                  ((= buttons mouse-center)
 153                   (describe-function 'sup-mouse-report)); silly self help
 154                  ))
 155           (t                            ;in another window
 156            (select-window window)
 157            (cond ((not sup-mouse-fast-select-window))
 158                  ((= buttons mouse-left)
 159                   (sup-move-point-to-x-y x y))
 160                  ((= buttons mouse-right)
 161                   (push-mark)
 162                   (sup-move-point-to-x-y x y)
 163                   (exchange-point-and-mark))
 164                  ((= buttons mouse-center)
 165                   (sup-move-point-to-x-y x y)
 166                   (setq this-command 'yank)
 167                   (yank))
 168                  ))
 169           )))
 170 \f
 171
 172 (defun sup-get-tty-num (term-char)
 173   "Read from terminal until TERM-CHAR is read, and return intervening number.
 174 Upon non-numeric not matching TERM-CHAR signal an error."
 175   (let
 176       ((num 0)
 177        (char (read-char)))
 178     (while (and (>= char ?0)
 179                 (<= char ?9))
 180       (setq num (+ (* num 10) (- char ?0)))
 181       (setq char (read-char)))
 182     (or (eq term-char char)
 183         (error "Invalid data format in mouse command"))
 184     num))
 185
 186 (defun sup-move-point-to-x-y (x y)
 187   "Position cursor in window coordinates.
 188 X and Y are 0-based character positions in the window."
 189   (move-to-window-line y)
 190   (move-to-column x)
 191   )
 192
 193 (defun sup-pos-to-window (x y)
 194   "Find window corresponding to frame coordinates.
 195 X and Y are 0-based character positions on the frame."
 196   (some-window (lambda (w) (coordinates-in-window-p (cons x y) w))))
 197
 198 ;;; sup-mouse.el ends here