1;;; bg-mouse.el --- GNU Emacs code for BBN Bitgraph mouse 2 3;; Copyright (C) 2001, 2002, 2003, 2004, 2005, 4;; 2006, 2007 Free Software Foundation, Inc. 5 6;; Author: John Robinson <jr@bbn-unix.arpa> 7;; Stephen Gildea <gildea@bbn.com> 8;; Maintainer: FSF 9;; Keywords: hardware 10 11;; This file is part of GNU Emacs. 12 13;; GNU Emacs is free software; you can redistribute it and/or modify 14;; it under the terms of the GNU General Public License as published by 15;; the Free Software Foundation; either version 2, or (at your option) 16;; any later version. 17 18;; GNU Emacs is distributed in the hope that it will be useful, 19;; but WITHOUT ANY WARRANTY; without even the implied warranty of 20;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21;; GNU General Public License for more details. 22 23;; You should have received a copy of the GNU General Public License 24;; along with GNU Emacs; see the file COPYING. If not, write to the 25;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 26;; Boston, MA 02110-1301, USA. 27 28;;; Commentary: 29 30;;; Code: 31 32;;; Original version by John Robinson (jr@bbn-unix.arpa, bbncca!jr), Oct 1985 33;;; Modularized and enhanced by gildea@bbn.com Nov 1987 34;;; Time stamp <89/03/21 14:27:08 gildea> 35 36;;; User customization option: 37 38(defvar bg-mouse-fast-select-window nil 39 "*Non-nil for mouse hits to select new window, then execute; else just select.") 40 41;;; These numbers are summed to make the index into the mouse-map. 42;;; The low three bits correspond to what the mouse actually sends. 43(defconst bg-button-r 1) 44(defconst bg-button-m 2) 45(defconst bg-button-c 2) 46(defconst bg-button-l 4) 47(defconst bg-in-modeline 8) 48(defconst bg-in-scrollbar 16) 49(defconst bg-in-minibuf 24) 50 51;;; semicolon screws up indenting, so use this instead 52(defconst semicolon ?\;) 53 54(defvar bg-mouse-x) 55(defvar bg-mouse-y) 56(defvar bg-cursor-window) 57;; This variable does not exist since 1991, so it's a safe bet 58;; this package is not really used anymore. Still... 59(defvar mouse-map) 60 61;;; Defuns: 62 63(defun bg-mouse-report (prefix-arg) 64 "Read, parse, and execute a BBN BitGraph mouse click. 65 66L-- move point | These apply for mouse click in a window. 67--R set mark | If bg-mouse-fast-select-window is nil, 68L-R kill region | these commands on a nonselected window 69-C- move point and yank | just select that window. 70LC- yank-pop | 71-CR or LCR undo | \"Scroll bar\" is right-hand window column. 72 73on modeline: on \"scroll bar\": in minibuffer: 74L-- scroll-up line to top execute-extended-command 75--R scroll-down line to bottom eval-expression 76-C- proportional goto-char line to middle suspend-emacs 77 78To reinitialize the mouse if the terminal is reset, type ESC : RET" 79 (interactive "P") 80 (bg-get-tty-num semicolon) 81 (let* 82 ((screen-mouse-x (min (1- (frame-width)) ;don't hit column 86! 83 (/ (bg-get-tty-num semicolon) 9))) 84 (screen-mouse-y (- (1- (frame-height)) ;assume default font size. 85 (/ (bg-get-tty-num semicolon) 16))) 86 (bg-mouse-buttons (% (bg-get-tty-num ?c) 8)) 87 (bg-mouse-window (bg-window-from-x-y screen-mouse-x screen-mouse-y)) 88 (bg-cursor-window (selected-window)) 89 (edges (window-edges bg-mouse-window)) 90 (minibuf-p (= screen-mouse-y (1- (frame-height)))) 91 (in-modeline-p (and (not minibuf-p) 92 (= screen-mouse-y (1- (nth 3 edges))))) 93 (in-scrollbar-p (and (not minibuf-p) (not in-modeline-p) 94 (>= screen-mouse-x (1- (nth 2 edges))))) 95 (same-window-p (eq bg-mouse-window bg-cursor-window)) 96 (in-minibuf-p (and minibuf-p 97 (not bg-mouse-window))) ;minibuf must be inactive 98 (bg-mode-bits (+ (if in-minibuf-p bg-in-minibuf 0) 99 (if in-modeline-p bg-in-modeline 0) 100 (if in-scrollbar-p bg-in-scrollbar 0))) 101 (bg-command 102 (lookup-key mouse-map 103 (char-to-string (+ bg-mode-bits bg-mouse-buttons)))) 104 (bg-mouse-x (- screen-mouse-x (nth 0 edges))) 105 (bg-mouse-y (- screen-mouse-y (nth 1 edges)))) 106 (cond ((or in-modeline-p in-scrollbar-p) 107 (select-window bg-mouse-window) 108 (bg-command-execute bg-command) 109 (select-window bg-cursor-window)) 110 ((or same-window-p in-minibuf-p) 111 (bg-command-execute bg-command)) 112 (t ;in another window 113 (select-window bg-mouse-window) 114 (if bg-mouse-fast-select-window 115 (bg-command-execute bg-command))) 116 ))) 117 118 119;;; Library of commands: 120 121(defun bg-set-point () 122 "Move point to location of BitGraph mouse." 123 (interactive) 124 (bg-move-point-to-x-y bg-mouse-x bg-mouse-y) 125 (setq this-command 'next-line) ;make subsequent line moves work 126 (setq temporary-goal-column bg-mouse-x)) 127 128(defun bg-set-mark () 129 "Set mark at location of BitGraph mouse." 130 (interactive) 131 (push-mark) 132 (bg-move-point-to-x-y bg-mouse-x bg-mouse-y) 133 (exchange-point-and-mark)) 134 135(defun bg-yank () 136 "Move point to location of BitGraph mouse and yank." 137 (interactive "*") 138 (bg-move-point-to-x-y bg-mouse-x bg-mouse-y) 139 (setq this-command 'yank) 140 (yank)) 141 142(defun yank-pop-1 () 143 (interactive "*") 144 (yank-pop 1)) 145 146(defun bg-yank-or-pop () 147 "Move point to location of BitGraph mouse and yank. If last command 148was a yank, do a yank-pop." 149 (interactive "*") 150 (if (eq last-command 'yank) 151 (yank-pop 1) 152 (bg-yank))) 153 154;;; In 18.51, Emacs Lisp doesn't provide most-positive-fixnum 155(defconst bg-most-positive-fixnum 8388607) 156 157(defun bg-move-by-percentage () 158 "Go to location in buffer that is the same percentage of the way 159through the buffer as the BitGraph mouse's X position in the window." 160 (interactive) 161 ;; check carefully for overflow in intermediate calculations 162 (goto-char 163 (cond ((zerop bg-mouse-x) 164 0) 165 ((< (buffer-size) (/ bg-most-positive-fixnum bg-mouse-x)) 166 ;; no danger of overflow: compute it exactly 167 (/ (* bg-mouse-x (buffer-size)) 168 (1- (window-width)))) 169 (t 170 ;; overflow possible: approximate 171 (* (/ (buffer-size) (1- (window-width))) 172 bg-mouse-x)))) 173 (beginning-of-line) 174 (what-cursor-position)) 175 176(defun bg-mouse-line-to-top () 177 "Scroll the line pointed to by the BitGraph mouse to the top of the window." 178 (interactive) 179 (scroll-up bg-mouse-y)) 180 181(defun bg-mouse-line-to-center () 182 "Scroll the line pointed to by the BitGraph mouse to the center 183of the window" 184 (interactive) 185 (scroll-up (/ (+ 2 bg-mouse-y bg-mouse-y (- (window-height))) 2))) 186 187(defun bg-mouse-line-to-bottom () 188 "Scroll the line pointed to by the mouse to the bottom of the window." 189 (interactive) 190 (scroll-up (+ bg-mouse-y (- 2 (window-height))))) 191 192(defun bg-kill-region () 193 (interactive "*") 194 (kill-region (region-beginning) (region-end))) 195 196(defun bg-insert-moused-sexp () 197 "Insert a copy of the word (actually sexp) that the mouse is pointing at. 198Sexp is inserted into the buffer at point (where the text cursor is)." 199 (interactive) 200 (let ((moused-text 201 (save-excursion 202 (bg-move-point-to-x-y bg-mouse-x bg-mouse-y) 203 (if (looking-at "\\s)") 204 (forward-char 1) 205 (forward-sexp 1)) 206 (buffer-substring (save-excursion (backward-sexp 1) (point)) 207 (point))))) 208 (select-window bg-cursor-window) 209 (delete-horizontal-space) 210 (cond 211 ((bolp) 212 (indent-according-to-mode)) 213 ;; In Lisp assume double-quote is closing; in Text assume opening. 214 ;; Why? Because it does the right thing most often. 215 ((save-excursion (forward-char -1) 216 (and (not (looking-at "\\s\"")) 217 (looking-at "[`'\"\\]\\|\\s("))) 218 nil) 219 (t 220 (insert " "))) 221 (insert moused-text) 222 (or (eolp) 223 (looking-at "\\s.\\|\\s)") 224 (and (looking-at "'") (looking-at "\\sw")) ;hack for text mode 225 (save-excursion (insert " "))))) 226 227;;; Utility functions: 228 229(defun bg-get-tty-num (term-char) 230 "Read from terminal until TERM-CHAR is read, and return intervening number. 231If non-numeric not matching TERM-CHAR, reprogram the mouse and signal an error." 232 (let 233 ((num 0) 234 (char (- (read-char) 48))) 235 (while (and (>= char 0) 236 (<= char 9)) 237 (setq num (+ (* num 10) char)) 238 (setq char (- (read-char) 48))) 239 (or (eq term-char (+ char 48)) 240 (progn 241 (bg-program-mouse) 242 (error 243 "Invalid data format in bg-mouse command: mouse reinitialized."))) 244 num)) 245 246;;; Note that this fails in the minibuf because move-to-column doesn't 247;;; allow for the width of the prompt. 248(defun bg-move-point-to-x-y (x y) 249 "Position cursor in window coordinates. 250X and Y are 0-based character positions in the window." 251 (move-to-window-line y) 252 ;; if not on a wrapped line, zero-column will be 0 253 (let ((zero-column (current-column)) 254 (scroll-offset (window-hscroll))) 255 ;; scrolling takes up column 0 to display the $ 256 (if (> scroll-offset 0) 257 (setq scroll-offset (1- scroll-offset))) 258 (move-to-column (+ zero-column scroll-offset x)) 259 )) 260 261;;; Returns the window that screen position (x, y) is in or nil if none, 262;;; meaning we are in the echo area with a non-active minibuffer. 263(defun bg-window-from-x-y (x y) 264 "Find window corresponding to screen coordinates. 265X and Y are 0-based character positions on the screen." 266 (get-window-with-predicate (lambda (w) 267 (coordinates-in-window-p (cons x y) w)))) 268 269(defun bg-command-execute (bg-command) 270 (if (commandp bg-command) 271 (command-execute bg-command) 272 (ding))) 273 274(defun bg-program-mouse () 275 (send-string-to-terminal "\e:0;7;;;360;512;9;16;9;16c")) 276 277;;; Note that the doc string for mouse-map (as defined in subr.el) 278;;; says it is for the X-window mouse. This is wrong; that keymap 279;;; should be used for your mouse no matter what terminal you have. 280 281(or (keymapp mouse-map) 282 (setq mouse-map (make-keymap))) 283 284(defun bind-bg-mouse-click (click-code function) 285 "Bind bg-mouse CLICK-CODE to run FUNCTION." 286 (define-key mouse-map (char-to-string click-code) function)) 287 288(bind-bg-mouse-click bg-button-l 'bg-set-point) 289(bind-bg-mouse-click bg-button-m 'bg-yank) 290(bind-bg-mouse-click bg-button-r 'bg-set-mark) 291(bind-bg-mouse-click (+ bg-button-l bg-button-m) 'yank-pop-1) 292(bind-bg-mouse-click (+ bg-button-l bg-button-r) 'bg-kill-region) 293(bind-bg-mouse-click (+ bg-button-m bg-button-r) 'undo) 294(bind-bg-mouse-click (+ bg-button-l bg-button-m bg-button-r) 'undo) 295(bind-bg-mouse-click (+ bg-in-modeline bg-button-l) 'scroll-up) 296(bind-bg-mouse-click (+ bg-in-modeline bg-button-m) 'bg-move-by-percentage) 297(bind-bg-mouse-click (+ bg-in-modeline bg-button-r) 'scroll-down) 298(bind-bg-mouse-click (+ bg-in-scrollbar bg-button-l) 'bg-mouse-line-to-top) 299(bind-bg-mouse-click (+ bg-in-scrollbar bg-button-m) 'bg-mouse-line-to-center) 300(bind-bg-mouse-click (+ bg-in-scrollbar bg-button-r) 'bg-mouse-line-to-bottom) 301(bind-bg-mouse-click (+ bg-in-minibuf bg-button-l) 'execute-extended-command) 302(bind-bg-mouse-click (+ bg-in-minibuf bg-button-m) 'suspend-emacs) 303(bind-bg-mouse-click (+ bg-in-minibuf bg-button-r) 'eval-expression) 304 305(provide 'bg-mouse) 306 307;;; arch-tag: b3d06605-2971-44b1-be2c-e49c24e1a8d3 308;;; bg-mouse.el ends here 309