Carousel/CAROUSEL.cdr/mactosh/unix/uw_term.sha/macmouse.ml

Lisp/Scheme | 1985-11-12 | 8KB | 364 lines

; $Header: /c/cak/lib/mlisp/RCS/macmouse.ml,v 1.5 85/11/05 14:01:44 cak Rel $
;
; Macintosh mouse routines for use with John Bruner's uw program.
;     Chris Kent, Purdue University Fri Oct 25 1985
;     Copyright 1985 by Christopher A. Kent. All rights reserved.
;     Permission to copy is given provided that the copy is not
;     sold and this copyright notice is included.
;
; Provides a scroll bar/thumbing area in the unused scroll bar with the
; following features:
;     click at line 1 does previous page
;    click at line 24 does next page
;     click anywhere else "thumbs" to the relative portion of the buffer.
;     shift-click at line 1 scrolls one line down
;     shift-click at line 24 scrolls one line up
;     shift-click elsewhere moves line to top of window
;     option-shift-click elsewhere moves line to bottom of window
;
; There is also basic positioning and kill-buffer support:
;     click in a buffer moves dot there
;     drag copies the dragged region to the kill buffer (mark is left
;         at the beginning of the region.)
;     shift-drag deletes the dragged region to the kill buffer
;   it is possible to use the scrolling and thumbing area to make the region
;   larger than a single screen; just click, scroll, release. Make sure
;   that the last scroll is just a down event; the up must be in the buffer.
;
;     option-click yanks from the kill buffer, doesn't affect mark.
;     option-shift-click similarly yanks from a named buffer.
;

(declare-global
    #mouse-last-x        ; x of last event
    #mouse-last-y        ; y of last event
    #mouse-last-b        ; buttons at last event
    #mouse-last-dot        ; dot after last event
    #mouse-last-action        ; whether last was scroll (1) or edit (2)
)

(defun
    (move-mac-cursor savest b x y up down lock shift option command saveb
    (setq savest stack-trace-on-error)
    (setq stack-trace-on-error 0)
    ; decode everything
    (setq y (- (get-tty-character) 32))
    (setq x (- (get-tty-character) 32))
    (setq b (- (get-tty-character) 32))
    (setq saveb b)
    (setq command (% b 2))(setq b (/ b 2))    ; command key
    (setq shift (% b 2))(setq b (/ b 2))    ; shift
    (setq lock (% b 2))(setq b (/ b 2))    ; caps-lock
    (setq option (% b 2))(setq b (/ b 2))    ; option
    (setq down (% b 2))(setq b (/ b 2))    ; mouse down
    (setq up (% b 2))

    (if (= x 81)        ; right margin -- move-dot-to-x-y is wrong
        (progn
           (#mouse-scroll-region)
           (setq #mouse-last-action 1))
        (if (error-occurred
            (if (= #mouse-last-action 2)    ; not if just scrolled
            (setq #mouse-last-dot (dot)))
            (move-dot-to-x-y x y)
            (backward-character)(forward-character)
            (#mouse-edit-action)
            (setq #mouse-last-action 2)
        )
        (progn
               (#mouse-scroll-region b x y)
               (setq #mouse-last-action 1))
        ))
    (setq stack-trace-on-error savest)
    (if (= down 1)
        (progn
           (setq #mouse-last-x x)
           (setq #mouse-last-y y)
           (setq #mouse-last-b saveb))
        (progn
           (setq #mouse-last-x 0)
           (setq #mouse-last-y 0)
           (setq #mouse-last-b 0)))
    )

    (#mouse-edit-action        ; marking and editing actions on buttons:
                ;   if no movement, nothing.
                ;   if movement, put  mark at #mouse-last-dot,
                ;      leave dot here,and edit.
                ; editing (on upstrokes):
                ;   unmodified, copy to kill buffer.
                ;   SHIFTed, delete (cut) to kill buffer.
                ;
                ; option-click yanks from kill buffer;
                ; shift-option-click from named buffer.
    (if (= saveb 16)
        (#mouse-d))
    (if (= saveb 17)
        (#mouse-dc))
    (if (= saveb 18)
        (#mouse-ds))
    (if (= saveb 19)
        (#mouse-dsc))
    (if (= saveb 20)
        (#mouse-dl))
    (if (= saveb 21)
        (#mouse-dlc))
    (if (= saveb 22)
        (#mouse-dls))
    (if (= saveb 23)
        (#mouse-dlsc))
    (if (= saveb 24)
        (#mouse-do))
    (if (= saveb 25)
        (#mouse-doc))
    (if (= saveb 26)
        (#mouse-dos))
    (if (= saveb 27)
        (#mouse-dosc))
    (if (= saveb 28)
        (#mouse-dol))
    (if (= saveb 29)
        (#mouse-dolc))
    (if (= saveb 30)
        (#mouse-dols))
    (if (= saveb 31)
        (#mouse-dolsc))
    (if (= saveb 32)
        (#mouse-u))
    (if (= saveb 33)
        (#mouse-uc))
    (if (= saveb 34)
        (#mouse-us))
    (if (= saveb 35)
        (#mouse-usc))
    (if (= saveb 36)
        (#mouse-ul))
    (if (= saveb 37)
        (#mouse-ulc))
    (if (= saveb 38)
        (#mouse-uls))
    (if (= saveb 39)
        (#mouse-ulsc))
    (if (= saveb 40)
        (#mouse-uo))
    (if (= saveb 41)
        (#mouse-uoc))
    (if (= saveb 42)
        (#mouse-uos))
    (if (= saveb 43)
        (#mouse-uosc))
    (if (= saveb 44)
        (#mouse-uol))
    (if (= saveb 45)
        (#mouse-uolc))
    (if (= saveb 46)
        (#mouse-uols))
    (if (= saveb 47)
        (#mouse-uolsc))
    )

    ; individual button bindings

    (#mouse-u            ; up
         (if (! (#mouse-click-p))
        (progn
           (#mouse-set-region)
           (Copy-region-to-kill-buffer)
        ))
    )

    (#mouse-uc            ; up/command
    )

    (#mouse-us            ; up/shift
         (if (! (#mouse-click-p))
        (progn
           (#mouse-set-region)
           (delete-to-killbuffer)
        ))
    )

    (#mouse-usc            ; up/shift/command
    )

    (#mouse-ul            ; up/lock
    )

    (#mouse-ulc            ; up/lock/command
    )

    (#mouse-uls            ; up/lock/shift
    )

    (#mouse-ulsc        ; up/lock/shift/command
    )

    (#mouse-uo            ; up/option
         (if (#mouse-click-p)
        (yank-from-killbuffer)
    )
    )

    (#mouse-uoc            ; up/option/command
    )

    (#mouse-uos            ; up/option/shift
    (if (#mouse-click-p)    ; click
        (yank-buffer (get-tty-buffer "Insert contents of buffer: "))
    )
    )

    (#mouse-uosc        ; up/option/shift
    )

    (#mouse-uol            ; up/option/lock
    )

    (#mouse-uolc        ; up/option/lock
    )

    (#mouse-uols        ; up/option/lock/shift
    )

    (#mouse-uolsc        ; up/option/lock/shift/command
    )

    (#mouse-d            ; down
    )

    (#mouse-dc            ; down/command
    )

    (#mouse-ds            ; down/shift
    )

    (#mouse-dsc            ; down/shift/command
    )

    (#mouse-dl            ; down/lock
    )

    (#mouse-dlc            ; down/lock/command
    )

    (#mouse-dls            ; down/lock/shift
    )

    (#mouse-dlsc        ; down/lock/shift/command
    )

    (#mouse-do            ; down/option
    )

    (#mouse-doc            ; down/option/command
    )

    (#mouse-dos            ; down/option/shift
    )

    (#mouse-dosc        ; down/option/shift
    )

    (#mouse-dol            ; down/option/lock
    )

    (#mouse-dolc        ; down/option/lock
    )

    (#mouse-dols        ; down/option/lock/shift
    )

    (#mouse-dolsc        ; down/option/lock/shift/command
    )

    (#mouse-set-region        ; set the region to be from last dot to dot.
    (set-mark)
    (goto-character #mouse-last-dot)
    (exchange-dot-and-mark)
    )

    (#mouse-click-p clickp
         (if (= (dot) #mouse-last-dot)
        (setq clickp 1)
        (setq clickp 0)
    ))

    (#mouse-scroll-region     ; out of range actions:
                ;    left margin -- hard to generate, ignored
                ;    right margin -- simulate scroll bar
                ;      line 1 -- previous page
                ;      line 24/25 -- next page
                ;      other lines -- thumbing
                ;    top margin -- previous page
                ;    bottom margin -- next page
                ;
                ; if shifted, deal with lines.
                ;    line 1 scrolls one line down
                ;    line 24/25 scrolls one line up
                ;    else line to top;  with option to bottom.
                ;
                ; if up stroke is in same place as down
                ; stroke, don't do anything, so clicks in
                ; the scroll region don't do the action
                ; twice.
    (if (= down 1)
        (if (= shift 1)
        (do-lines)
        (do-pages))
    )
    (if (& (= up 1)
           (| (!= x #mouse-last-x) (!= y #mouse-last-y)))
        (if (= shift 1)
        (do-lines)
        (do-pages)
        )
    )
    (#mouse-set-region)
    )

    (do-pages            ; large motions via pages and thumbing
    (if (| (= y 0) (= y 1) (= y 24) (= y 25))
        (progn
           (if (| (= y 0) (= y 1))
               (previous-page)
               (Next-Page)
           ))
        (if (= x 81)
        (goto-percent (/ (* y 100) 25))
        )
    ))

    (do-lines            ; fine control over lines
    (if (= x 81)
        (if (| (= y 1) (= y 24) (= y 25))
        (if (| (= y 0) (= y 1))
            (scroll-one-line-down)
            (scroll-one-line-up)
        )
        (progn
              (move-dot-to-x-y 1 y)
              (if (= option 0)
              (line-to-top-of-window)
              (line-to-bottom-of-window))
        )
        )
    )
    )

    (line-to-bottom-of-window nlines i
    (line-to-top-of-window)
    (setq i 0)
    (setq nlines (- (window-height) 1))
    (while (< i nlines)
           (scroll-one-line-down)
           (setq i (+ i 1))
    )
    )

    (goto-percent
       (goto-character (/ (* (buffer-size) (arg 1)) 100))
   )
)

(bind-to-key "move-mac-cursor" "\em")