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Annotation of 43BSD/contrib/emacs/lisp/bg-mouse.el, revision 1.1

1.1     ! root        1: ;; GNU Emacs code for BBN Bitgraph mouse.
        !             2: ;; Copyright (C) Free Software Foundation Oct 1985.
        !             3: 
        !             4: ;; This file is part of GNU Emacs.
        !             5: 
        !             6: ;; GNU Emacs is distributed in the hope that it will be useful,
        !             7: ;; but WITHOUT ANY WARRANTY.  No author or distributor
        !             8: ;; accepts responsibility to anyone for the consequences of using it
        !             9: ;; or for whether it serves any particular purpose or works at all,
        !            10: ;; unless he says so in writing.  Refer to the GNU Emacs General Public
        !            11: ;; License for full details.
        !            12: 
        !            13: ;; Everyone is granted permission to copy, modify and redistribute
        !            14: ;; GNU Emacs, but only under the conditions described in the
        !            15: ;; GNU Emacs General Public License.   A copy of this license is
        !            16: ;; supposed to have been given to you along with GNU Emacs so you
        !            17: ;; can know your rights and responsibilities.  It should be in a
        !            18: ;; file named COPYING.  Among other things, the copyright notice
        !            19: ;; and this notice must be preserved on all copies.
        !            20: 
        !            21: 
        !            22: ;;;  Original version by John Robinson ([email protected], bbncca!jr), Oct 1985
        !            23: 
        !            24: ;;;  User customization option:
        !            25: 
        !            26: (defvar bg-mouse-fast-select-window nil
        !            27:   "*Non-nil for mouse hits to select new window, then execute; else just select.")
        !            28: 
        !            29: ;;;  Defuns:
        !            30: 
        !            31: (defun bg-mouse-report ()
        !            32:   "Read and parse BBN BitGraph mouse report, and do what it asks.
        !            33: 
        !            34: L-- move point          *  |---- These apply for mouse click in a window.
        !            35: --R set mark            *  | If bg-mouse-fast-select-window is nil,
        !            36: L-R kill region            | a starred command on a nonselected window
        !            37: -C- move point and yank *  | just selects that window.
        !            38: LC- yank-pop
        !            39: -CR or LCR undo                   | \"Scroll bar\" is right-hand window column.
        !            40: 
        !            41: on modeline                on \"scroll bar\"   in minibuffer
        !            42: L-- scroll-up              line to top         execute-extended-command
        !            43: --R scroll-down                    line to bottom      eval-expression
        !            44: -C- proportional goto-char  line to middle     suspend-emacs
        !            45: 
        !            46: To reenable the mouse if terminal is reset, type ESC : RET ."
        !            47:   (interactive)
        !            48:   (bg-get-tty-num ?\;)
        !            49:   (let*
        !            50:       ((x (min (1- (screen-width))
        !            51:               (/ (bg-get-tty-num ?\;) 9)))     ; Don't hit column 86!
        !            52:        (y (- (1- (screen-height))
        !            53:             (/ (bg-get-tty-num ?\;) 16)))      ; Assume default font size.
        !            54:        (buttons (% (bg-get-tty-num ?c) 8))
        !            55:        (window (bg-pos-to-window x y))
        !            56:        (edges (window-edges window))
        !            57:        (old-window (selected-window))
        !            58:        (in-minibuf-p (eq y (1- (screen-height))))
        !            59:        (same-window-p (and (not in-minibuf-p) (eq window old-window)))
        !            60:        (in-modeline-p (eq y (1- (nth 3 edges))))
        !            61:        (in-scrollbar-p (>= x (1- (nth 2 edges)))))
        !            62:     (setq x (- x (nth 0 edges)))
        !            63:     (setq y (- y (nth 1 edges)))
        !            64:     (cond (in-modeline-p
        !            65:           (select-window window)
        !            66:           (cond ((= buttons 4)
        !            67:                  (scroll-up))
        !            68:                 ((= buttons 1)
        !            69:                  (scroll-down))
        !            70:                 ((= buttons 2)
        !            71:                  (goto-char (/ (* x
        !            72:                                   (- (point-max) (point-min)))
        !            73:                                (1- (window-width))))
        !            74:                  (beginning-of-line)
        !            75:                  (what-cursor-position)))
        !            76:           (select-window old-window))
        !            77:          (in-scrollbar-p
        !            78:           (select-window window)
        !            79:           (scroll-up
        !            80:            (cond ((= buttons 4)
        !            81:                   y)
        !            82:                 ((= buttons 1)
        !            83:                   (+ y (- 2 (window-height))))
        !            84:                 ((= buttons 2)
        !            85:                   (/ (+ 2 y y (- (window-height))) 2))
        !            86:                 (t
        !            87:                  0)))
        !            88:           (select-window old-window))
        !            89:          (same-window-p
        !            90:           (cond ((= buttons 4)
        !            91:                  (bg-move-point-to-x-y x y))
        !            92:                 ((= buttons 1)
        !            93:                  (push-mark)
        !            94:                  (bg-move-point-to-x-y x y)
        !            95:                  (exchange-point-and-mark))
        !            96:                 ((= buttons 5)
        !            97:                  (kill-region (mark) (point)))
        !            98:                 ((= buttons 2)
        !            99:                  (bg-move-point-to-x-y x y)
        !           100:                  (setq this-command 'yank)
        !           101:                  (yank))
        !           102:                 ((= buttons 6)
        !           103:                  (yank-pop 1))
        !           104:                 ((or (= buttons 3) (= buttons 7))
        !           105:                  (undo))
        !           106:                 )
        !           107:           )
        !           108:          (in-minibuf-p
        !           109:           (cond ((= buttons 1)
        !           110:                  (call-interactively 'eval-expression))
        !           111:                 ((= buttons 4)
        !           112:                  (call-interactively 'execute-extended-command))
        !           113:                 ((= buttons 2)
        !           114:                  (suspend-emacs))
        !           115:                 ))
        !           116:          (t                            ;in another window
        !           117:           (select-window window)
        !           118:           (cond ((not bg-mouse-fast-select-window))
        !           119:                 ((= buttons 4)
        !           120:                  (bg-move-point-to-x-y x y))
        !           121:                 ((= buttons 1)
        !           122:                  (push-mark)
        !           123:                  (bg-move-point-to-x-y x y)
        !           124:                  (exchange-point-and-mark))
        !           125:                 ((= buttons 2)
        !           126:                  (bg-move-point-to-x-y x y)
        !           127:                  (setq this-command 'yank)
        !           128:                  (yank))
        !           129:                 ))
        !           130:          )))
        !           131: 
        !           132: (defun bg-get-tty-num (term-char)
        !           133:   "Read from terminal until TERM-CHAR is read, and return intervening number.
        !           134: Upon non-numeric not matching TERM-CHAR, reprogram the mouse and signal an error."
        !           135:   (let
        !           136:       ((num 0)
        !           137:        (char (- (read-char) 48)))
        !           138:     (while (and (>= char 0)
        !           139:                (<= char 9))
        !           140:       (setq num (+ (* num 10) char))
        !           141:       (setq char (- (read-char) 48)))
        !           142:     (or (eq term-char (+ char 48))
        !           143:        (progn
        !           144:          (bg-program-mouse)
        !           145:          (error "Invalid data format in mouse command")))
        !           146:     num))
        !           147: 
        !           148: (defun bg-move-point-to-x-y (x y)
        !           149:   "Position cursor in window coordinates.
        !           150: X and Y are 0-based character positions in the window."
        !           151:   (move-to-window-line y)
        !           152:   (move-to-column x)
        !           153:   )
        !           154: 
        !           155: (defun bg-pos-to-window (x y)
        !           156:   "Find window corresponding to screen coordinates.
        !           157: X and Y are 0-based character positions on the screen."
        !           158:   (let ((edges (window-edges))
        !           159:        (window nil))
        !           160:     (while (and (not (eq window (selected-window)))
        !           161:                (or (<  y (nth 1 edges))
        !           162:                    (>= y (nth 3 edges))
        !           163:                    (<  x (nth 0 edges))
        !           164:                    (>= x (nth 2 edges))))
        !           165:       (setq window (next-window window))
        !           166:       (setq edges (window-edges window))
        !           167:       )
        !           168:     (or window (selected-window))
        !           169:     )
        !           170:   )
        !           171: 
        !           172: (defun bg-program-mouse ()
        !           173:   (send-string-to-terminal "\e:0;7;;;360;512;9;16;9;16c"))
        !           174: 

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