--- /dev/null
+;;; bg-mouse.el --- GNU Emacs code for BBN Bitgraph mouse.
+
+;; Copyright (C) Free Software Foundation, Inc. Oct 1985.
+
+;; Author: John Robinson <jr@bbn-unix.arpa>
+;; Stephen Gildea <gildea@bbn.com>
+;; Maintainer: FSF
+;; Keywords: hardware
+
+;; 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 2, 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.
+
+;;; Code:
+
+;;; Original version by John Robinson (jr@bbn-unix.arpa, bbncca!jr), Oct 1985
+;;; Modularized and enhanced by gildea@bbn.com Nov 1987
+;;; Time stamp <89/03/21 14:27:08 gildea>
+
+;;; User customization option:
+
+(defvar bg-mouse-fast-select-window nil
+ "*Non-nil for mouse hits to select new window, then execute; else just select.")
+
+;;; These numbers are summed to make the index into the mouse-map.
+;;; The low three bits correspond to what the mouse actually sends.
+(defconst bg-button-r 1)
+(defconst bg-button-m 2)
+(defconst bg-button-c 2)
+(defconst bg-button-l 4)
+(defconst bg-in-modeline 8)
+(defconst bg-in-scrollbar 16)
+(defconst bg-in-minibuf 24)
+
+;;; semicolon screws up indenting, so use this instead
+(defconst semicolon ?\;)
+
+;;; Defuns:
+
+(defun bg-mouse-report (prefix-arg)
+ "Read, parse, and execute a BBN BitGraph mouse click.
+
+L-- move point | These apply for mouse click in a window.
+--R set mark | If bg-mouse-fast-select-window is nil,
+L-R kill region | these commands on a nonselected window
+-C- move point and yank | just select that window.
+LC- yank-pop |
+-CR or LCR undo | \"Scroll bar\" is right-hand window column.
+
+on modeline: on \"scroll bar\": in minibuffer:
+L-- scroll-up line to top execute-extended-command
+--R scroll-down line to bottom eval-expression
+-C- proportional goto-char line to middle suspend-emacs
+
+To reinitialize the mouse if the terminal is reset, type ESC : RET"
+ (interactive "P")
+ (bg-get-tty-num semicolon)
+ (let*
+ ((screen-mouse-x (min (1- (frame-width)) ;don't hit column 86!
+ (/ (bg-get-tty-num semicolon) 9)))
+ (screen-mouse-y (- (1- (frame-height)) ;assume default font size.
+ (/ (bg-get-tty-num semicolon) 16)))
+ (bg-mouse-buttons (% (bg-get-tty-num ?c) 8))
+ (bg-mouse-window (bg-window-from-x-y screen-mouse-x screen-mouse-y))
+ (bg-cursor-window (selected-window))
+ (edges (window-edges bg-mouse-window))
+ (minibuf-p (= screen-mouse-y (1- (screen-height))))
+ (in-modeline-p (and (not minibuf-p)
+ (= screen-mouse-y (1- (nth 3 edges)))))
+ (in-scrollbar-p (and (not minibuf-p) (not in-modeline-p)
+ (>= screen-mouse-x (1- (nth 2 edges)))))
+ (same-window-p (eq bg-mouse-window bg-cursor-window))
+ (in-minibuf-p (and minibuf-p
+ (not bg-mouse-window))) ;minibuf must be inactive
+ (bg-mode-bits (+ (if in-minibuf-p bg-in-minibuf 0)
+ (if in-modeline-p bg-in-modeline 0)
+ (if in-scrollbar-p bg-in-scrollbar 0)))
+ (bg-command
+ (lookup-key mouse-map
+ (char-to-string (+ bg-mode-bits bg-mouse-buttons))))
+ (bg-mouse-x (- screen-mouse-x (nth 0 edges)))
+ (bg-mouse-y (- screen-mouse-y (nth 1 edges))))
+ (cond ((or in-modeline-p in-scrollbar-p)
+ (select-window bg-mouse-window)
+ (bg-command-execute bg-command)
+ (select-window bg-cursor-window))
+ ((or same-window-p in-minibuf-p)
+ (bg-command-execute bg-command))
+ (t ;in another window
+ (select-window bg-mouse-window)
+ (if bg-mouse-fast-select-window
+ (bg-command-execute bg-command)))
+ )))
+
+\f
+;;; Library of commands:
+
+(defun bg-set-point ()
+ "Move point to location of BitGraph mouse."
+ (interactive)
+ (bg-move-point-to-x-y bg-mouse-x bg-mouse-y)
+ (setq this-command 'next-line) ;make subsequent line moves work
+ (setq temporary-goal-column bg-mouse-x))
+
+(defun bg-set-mark ()
+ "Set mark at location of BitGraph mouse."
+ (interactive)
+ (push-mark)
+ (bg-move-point-to-x-y bg-mouse-x bg-mouse-y)
+ (exchange-point-and-mark))
+
+(defun bg-yank ()
+ "Move point to location of BitGraph mouse and yank."
+ (interactive "*")
+ (bg-move-point-to-x-y bg-mouse-x bg-mouse-y)
+ (setq this-command 'yank)
+ (yank))
+
+(defun yank-pop-1 ()
+ (interactive "*")
+ (yank-pop 1))
+
+(defun bg-yank-or-pop ()
+ "Move point to location of BitGraph mouse and yank. If last command
+was a yank, do a yank-pop."
+ (interactive "*")
+ (if (eql last-command 'yank)
+ (yank-pop 1)
+ (bg-yank)))
+
+;;; In 18.51, Emacs Lisp doesn't provide most-positive-fixnum
+(defconst bg-most-positive-fixnum 8388607)
+
+(defun bg-move-by-percentage ()
+ "Go to location in buffer that is the same percentage of the way
+through the buffer as the BitGraph mouse's X position in the window."
+ (interactive)
+ ;; check carefully for overflow in intermediate calculations
+ (goto-char
+ (cond ((zerop bg-mouse-x)
+ 0)
+ ((< (buffer-size) (/ bg-most-positive-fixnum bg-mouse-x))
+ ;; no danger of overflow: compute it exactly
+ (/ (* bg-mouse-x (buffer-size))
+ (1- (window-width))))
+ (t
+ ;; overflow possible: approximate
+ (* (/ (buffer-size) (1- (window-width)))
+ bg-mouse-x))))
+ (beginning-of-line)
+ (what-cursor-position))
+
+(defun bg-mouse-line-to-top ()
+ "Scroll the line pointed to by the BitGraph mouse to the top of the window."
+ (interactive)
+ (scroll-up bg-mouse-y))
+
+(defun bg-mouse-line-to-center ()
+ "Scroll the line pointed to by the BitGraph mouse to the center
+of the window."
+ (interactive)
+ (scroll-up (/ (+ 2 bg-mouse-y bg-mouse-y (- (window-height))) 2)))
+
+(defun bg-mouse-line-to-bottom ()
+ "Scroll the line pointed to by the mouse to the bottom of the window."
+ (interactive)
+ (scroll-up (+ bg-mouse-y (- 2 (window-height)))))
+
+(defun bg-kill-region ()
+ (interactive "*")
+ (kill-region (region-beginning) (region-end)))
+
+(defun bg-insert-moused-sexp ()
+ "Insert a copy of the word (actually sexp) that the mouse is pointing at.
+Sexp is inserted into the buffer at point (where the text cursor is)."
+ (interactive)
+ (let ((moused-text
+ (save-excursion
+ (bg-move-point-to-x-y bg-mouse-x bg-mouse-y)
+ (if (looking-at "\\s)")
+ (forward-char 1)
+ (forward-sexp 1))
+ (buffer-substring (save-excursion (backward-sexp 1) (point))
+ (point)))))
+ (select-window bg-cursor-window)
+ (delete-horizontal-space)
+ (cond
+ ((bolp)
+ (indent-according-to-mode))
+ ;; In Lisp assume double-quote is closing; in Text assume opening.
+ ;; Why? Because it does the right thing most often.
+ ((save-excursion (backward-char 1)
+ (and (not (looking-at "\\s\""))
+ (looking-at "[`'\"\\]\\|\\s(")))
+ nil)
+ (t
+ (insert-string " ")))
+ (insert-string moused-text)
+ (or (eolp)
+ (looking-at "\\s.\\|\\s)")
+ (and (looking-at "'") (looking-at "\\sw")) ;hack for text mode
+ (save-excursion (insert-string " ")))))
+\f
+;;; Utility functions:
+
+(defun bg-get-tty-num (term-char)
+ "Read from terminal until TERM-CHAR is read, and return intervening number.
+If non-numeric not matching TERM-CHAR, reprogram the mouse and signal an error."
+ (let
+ ((num 0)
+ (char (- (read-char) 48)))
+ (while (and (>= char 0)
+ (<= char 9))
+ (setq num (+ (* num 10) char))
+ (setq char (- (read-char) 48)))
+ (or (eq term-char (+ char 48))
+ (progn
+ (bg-program-mouse)
+ (error
+ "Invalid data format in bg-mouse command: mouse reinitialized.")))
+ num))
+
+;;; Note that this fails in the minibuf because move-to-column doesn't
+;;; allow for the width of the prompt.
+(defun bg-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)
+ ;; if not on a wrapped line, zero-column will be 0
+ (let ((zero-column (current-column))
+ (scroll-offset (window-hscroll)))
+ ;; scrolling takes up column 0 to display the $
+ (if (> scroll-offset 0)
+ (setq scroll-offset (1- scroll-offset)))
+ (move-to-column (+ zero-column scroll-offset x))
+ ))
+
+;;; Returns the window that screen position (x, y) is in or nil if none,
+;;; meaning we are in the echo area with a non-active minibuffer.
+;;; If coordinates-in-window-p were not in an X-windows-specific file
+;;; we could use that. In Emacs 19 can even use locate-window-from-coordinates
+(defun bg-window-from-x-y (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)))
+ (cond ((eq window (selected-window))
+ nil) ;we've looped: not found
+ ((not window)
+ (selected-window)) ;just starting: current window
+ (t
+ window))
+ ))
+
+(defun bg-command-execute (bg-command)
+ (if (commandp bg-command)
+ (command-execute bg-command)
+ (ding)))
+
+(defun bg-program-mouse ()
+ (send-string-to-terminal "\e:0;7;;;360;512;9;16;9;16c"))
+
+;;; Note that the doc string for mouse-map (as defined in subr.el)
+;;; says it is for the X-window mouse. This is wrong; that keymap
+;;; should be used for your mouse no matter what terminal you have.
+
+(or (keymapp mouse-map)
+ (setq mouse-map (make-keymap)))
+
+(defun bind-bg-mouse-click (click-code function)
+ "Bind bg-mouse CLICK-CODE to run FUNCTION."
+ (define-key mouse-map (char-to-string click-code) function))
+
+(bind-bg-mouse-click bg-button-l 'bg-set-point)
+(bind-bg-mouse-click bg-button-m 'bg-yank)
+(bind-bg-mouse-click bg-button-r 'bg-set-mark)
+(bind-bg-mouse-click (+ bg-button-l bg-button-m) 'yank-pop-1)
+(bind-bg-mouse-click (+ bg-button-l bg-button-r) 'bg-kill-region)
+(bind-bg-mouse-click (+ bg-button-m bg-button-r) 'undo)
+(bind-bg-mouse-click (+ bg-button-l bg-button-m bg-button-r) 'undo)
+(bind-bg-mouse-click (+ bg-in-modeline bg-button-l) 'scroll-up)
+(bind-bg-mouse-click (+ bg-in-modeline bg-button-m) 'bg-move-by-percentage)
+(bind-bg-mouse-click (+ bg-in-modeline bg-button-r) 'scroll-down)
+(bind-bg-mouse-click (+ bg-in-scrollbar bg-button-l) 'bg-mouse-line-to-top)
+(bind-bg-mouse-click (+ bg-in-scrollbar bg-button-m) 'bg-mouse-line-to-center)
+(bind-bg-mouse-click (+ bg-in-scrollbar bg-button-r) 'bg-mouse-line-to-bottom)
+(bind-bg-mouse-click (+ bg-in-minibuf bg-button-l) 'execute-extended-command)
+(bind-bg-mouse-click (+ bg-in-minibuf bg-button-m) 'suspend-emacs)
+(bind-bg-mouse-click (+ bg-in-minibuf bg-button-r) 'eval-expression)
+
+(provide 'bg-mouse)
+
+;;; bg-mouse.el ends here
projects / chise / xemacs-chise.git- / blobdiff