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+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; ;;
+;; File: sup-mouse.el ;;
+;; Author: Wolfgang Rupprecht ;;
+;; Created: Fri Nov 21 19:22:22 1986 ;;
+;; Contents: supdup mouse support for lisp machines ;;
+;; ;;
+;; (from code originally written by John Robinson@bbn for the bitgraph) ;;
+;; ;;
+;; $Log$ ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+;; GNU Emacs code for lambda/supdup mouse
+;; Copyright (C) Free Software Foundation 1985, 1986
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 1, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING. If not, write to
+;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+;;; User customization option:
+
+(defvar sup-mouse-fast-select-window nil
+ "*Non-nil for mouse hits to select new window, then execute; else just select.")
+
+(defconst mouse-left 0)
+(defconst mouse-center 1)
+(defconst mouse-right 2)
+
+(defconst mouse-2left 4)
+(defconst mouse-2center 5)
+(defconst mouse-2right 6)
+
+(defconst mouse-3left 8)
+(defconst mouse-3center 9)
+(defconst mouse-3right 10)
+
+;;; Defuns:
+
+(defun sup-mouse-report ()
+ "This function is called directly by the mouse, it parses and
+executes the mouse commands.
+
+ L move point * |---- These apply for mouse click in a window.
+2L delete word |
+3L copy word | If sup-mouse-fast-select-window is nil,
+ C move point and yank * | just selects that window.
+2C yank pop |
+ R set mark * |
+2R delete region |
+3R copy region |
+
+on modeline on \"scroll bar\" in minibuffer
+ L scroll-up line to top execute-extended-command
+ C proportional goto-char line to middle mouse-help
+ R scroll-down line to bottom eval-expression"
+
+ (interactive)
+ (let*
+;; expect a string of <esc>:<buttons>;<x-pos>;<y-pos>c
+ ((buttons (sup-get-tty-num ?\;))
+ (x (sup-get-tty-num ?\;))
+ (y (sup-get-tty-num ?c))
+ (window (sup-pos-to-window x y))
+ (edges (window-edges window))
+ (old-window (selected-window))
+ (in-minibuf-p (eq y (1- (screen-height))))
+ (same-window-p (and (not in-minibuf-p) (eq window old-window)))
+ (in-modeline-p (eq y (1- (nth 3 edges))))
+ (in-scrollbar-p (>= x (1- (nth 2 edges)))))
+ (setq x (- x (nth 0 edges)))
+ (setq y (- y (nth 1 edges)))
+
+; (error "mouse-hit %d %d %d" buttons x y) ;;;; debug
+
+ (cond (in-modeline-p
+ (select-window window)
+ (cond ((= buttons mouse-left)
+ (scroll-up))
+ ((= buttons mouse-right)
+ (scroll-down))
+ ((= buttons mouse-center)
+ (goto-char (/ (* x
+ (- (point-max) (point-min)))
+ (1- (window-width))))
+ (beginning-of-line)
+ (what-cursor-position)))
+ (select-window old-window))
+ (in-scrollbar-p
+ (select-window window)
+ (scroll-up
+ (cond ((= buttons mouse-left)
+ y)
+ ((= buttons mouse-right)
+ (+ y (- 2 (window-height))))
+ ((= buttons mouse-center)
+ (/ (+ 2 y y (- (window-height))) 2))
+ (t
+ 0)))
+ (select-window old-window))
+ (same-window-p
+ (cond ((= buttons mouse-left)
+ (sup-move-point-to-x-y x y))
+ ((= buttons mouse-2left)
+ (sup-move-point-to-x-y x y)
+ (kill-word 1))
+ ((= buttons mouse-3left)
+ (sup-move-point-to-x-y x y)
+ (save-excursion
+ (copy-region-as-kill
+ (point) (progn (forward-word 1) (point))))
+ (setq this-command 'yank)
+ )
+ ((= buttons mouse-right)
+ (push-mark)
+ (sup-move-point-to-x-y x y)
+ (exchange-point-and-mark))
+ ((= buttons mouse-2right)
+ (push-mark)
+ (sup-move-point-to-x-y x y)
+ (kill-region (mark) (point)))
+ ((= buttons mouse-3right)
+ (push-mark)
+ (sup-move-point-to-x-y x y)
+ (copy-region-as-kill (mark) (point))
+ (setq this-command 'yank))
+ ((= buttons mouse-center)
+ (sup-move-point-to-x-y x y)
+ (setq this-command 'yank)
+ (yank))
+ ((= buttons mouse-2center)
+ (yank-pop 1))
+ )
+ )
+ (in-minibuf-p
+ (cond ((= buttons mouse-right)
+ (call-interactively 'eval-expression))
+ ((= buttons mouse-left)
+ (call-interactively 'execute-extended-command))
+ ((= buttons mouse-center)
+ (describe-function 'sup-mouse-report)); silly self help
+ ))
+ (t ;in another window
+ (select-window window)
+ (cond ((not sup-mouse-fast-select-window))
+ ((= buttons mouse-left)
+ (sup-move-point-to-x-y x y))
+ ((= buttons mouse-right)
+ (push-mark)
+ (sup-move-point-to-x-y x y)
+ (exchange-point-and-mark))
+ ((= buttons mouse-center)
+ (sup-move-point-to-x-y x y)
+ (setq this-command 'yank)
+ (yank))
+ ))
+ )))
+
+
+(defun sup-get-tty-num (term-char)
+ "Read from terminal until TERM-CHAR is read, and return intervening number.
+Upon non-numeric not matching TERM-CHAR signal an error."
+ (let
+ ((num 0)
+ (char (read-char)))
+ (while (and (>= char ?0)
+ (<= char ?9))
+ (setq num (+ (* num 10) (- char ?0)))
+ (setq char (read-char)))
+ (or (eq term-char char)
+ (error "Invalid data format in mouse command"))
+ num))
+
+(defun sup-move-point-to-x-y (x y)
+ "Position cursor in window coordinates.
+X and Y are 0-based character positions in the window."
+ (move-to-window-line y)
+ (move-to-column x)
+ )
+
+(defun sup-pos-to-window (x y)
+ "Find window corresponding to screen coordinates.
+X and Y are 0-based character positions on the screen."
+ (let ((edges (window-edges))
+ (window nil))
+ (while (and (not (eq window (selected-window)))
+ (or (< y (nth 1 edges))
+ (>= y (nth 3 edges))
+ (< x (nth 0 edges))
+ (>= x (nth 2 edges))))
+ (setq window (next-window window))
+ (setq edges (window-edges window))
+ )
+ (or window (selected-window))
+ )
+ )
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