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+;; Cursor definitions for Sun windows
+;; Copyright (C) 1987 Free Software Foundation, Inc.
+
+;; 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.
+
+;;;
+;;; Added some more cursors and moved the hot spots
+;;; Cursor defined by 16 pairs of 16-bit numbers
+;;;
+;;; 9-dec-86 Jeff Peck, Sun Microsystems Inc. <peck@sun.com>
+
+(provide 'sm-cursors)
+
+(defvar sc::cursors nil "List of known cursors")
+
+(defmacro defcursor (name x y string)
+  (if (not (memq name sc::cursors)) 
+      (setq sc::cursors (cons name sc::cursors)))
+  (list 'defconst name (list 'vector x y string)))
+
+;;; push should be defined in common lisp, but if not use this:
+;(defmacro push (v l)
+;  "The ITEM is evaluated and consed onto LIST, a list-valued atom"
+;  (list 'setq l (list 'cons v l)))
+
+;;;
+;;; The standard default cursor
+;;;
+(defcursor sc:right-arrow 15 0
+  (concat '(0 1 0 3 0 7 0 15 0 31 0 63 0 127 0 15
+	      0 27 0 25 0 48 0 48 0 96 0 96 0 192 0 192)))
+
+;;(sc:set-cursor sc:right-arrow)
+
+(defcursor sc:fat-left-arrow 0 8
+  (concat '(1 0 3 0 7 0 15 0 31 0 63 255 127 255 255 255
+	      255 255 127 255 63 255 31 0 15 0 7 0 3 0 1 0)))
+
+(defcursor sc:box 8 8
+  (concat '(15 252 8 4 8 4 8 4 8 4 8 4 8 4 8 4
+	       8 132 8 4 8 4 8 4 8 4 8 4 8 4 15 252)))
+
+(defcursor sc:hourglass 8 8
+  (concat "\177\376\100\002\040\014\032\070"
+	  "\017\360\007\340\003\300\001\200"
+	  "\001\200\002\100\005\040\010\020"
+	  "\021\210\043\304\107\342\177\376"))
+
+(defun sc:set-cursor (icon)
+  "Change the Sun mouse cursor to ICON.
+If ICON is nil, switch to the system default cursor,
+Otherwise, ICON should be a vector or the name of a vector of [x y 32-chars]"
+  (interactive "XIcon Name: ")
+  (if (symbolp icon) (setq icon (symbol-value icon)))
+  (sun-change-cursor-icon icon))
+
+(make-local-variable '*edit-icon*)
+(make-variable-buffer-local 'icon-edit)
+(setq-default icon-edit nil)
+(or (assq 'icon-edit minor-mode-alist)
+    (push '(icon-edit " IconEdit") minor-mode-alist))
+
+(defun sc:edit-cursor (icon)
+  "convert icon to rectangle, edit, and repack"
+  (interactive "XIcon Name: ")
+  (if (not icon) (setq icon (sc::menu-choose-cursor (selected-window) 1 1)))
+  (if (symbolp icon) (setq icon (symbol-value icon)))
+  (if (get-buffer "icon-edit") (kill-buffer "icon-edit"))
+  (switch-to-buffer "icon-edit")
+  (local-set-mouse '(text right) 'sc::menu-function)
+  (local-set-mouse '(text left) '(sc::pic-ins-at-mouse 32))
+  (local-set-mouse '(text middle) '(sc::pic-ins-at-mouse 64))
+  (local-set-mouse '(text left middle) 'sc::hotspot)
+  (sc::display-icon icon)
+  (picture-mode)
+  (setq icon-edit t)	; for mode line display
+)
+
+(defun sc::pic-ins-at-mouse (char)
+  "Picture insert char at mouse location"
+  (mouse-move-point *mouse-window* (min 15 *mouse-x*) (min 15 *mouse-y*))
+  (move-to-column-force (1+ (min 15 (current-column))))
+  (delete-char -1)
+  (insert char)
+  (sc::goto-hotspot))
+    
+(defun sc::menu-function (window x y)
+  (sun-menu-evaluate window (1+ x) y sc::menu))
+
+(defmenu sc::menu
+  ("Cursor Menu")
+  ("Pack & Use" sc::pack-buffer-to-cursor)
+  ("Pack to Icon" sc::pack-buffer-to-icon 
+		  (sc::menu-choose-cursor *menu-window* *menu-x* *menu-y*))
+  ("New Icon" call-interactively 'sc::make-cursor)
+  ("Edit Icon" sc:edit-cursor 
+	       (sc::menu-choose-cursor *menu-window* *menu-x* *menu-y*))
+  ("Set Cursor" sc:set-cursor
+		(sc::menu-choose-cursor *menu-window* *menu-x* *menu-y*)) 
+  ("Reset Cursor" sc:set-cursor nil)
+  ("Help". sc::edit-icon-help-menu)
+  ("Quit" sc::quit-edit)
+  )
+
+(defun sc::quit-edit ()
+  (interactive)
+  (bury-buffer (current-buffer))
+  (switch-to-buffer (other-buffer) 'no-record))
+
+(defun sc::make-cursor (symbol)
+  (interactive "SIcon Name: ")
+  (eval (list 'defcursor symbol 0 0 ""))
+  (sc::pack-buffer-to-icon (symbol-value symbol)))
+
+(defmenu sc::edit-icon-help-menu
+  ("Simple Icon Editor")
+  ("Left     => CLEAR")
+  ("Middle   => SET")
+  ("L & M    => HOTSPOT")
+  ("Right    => MENU"))
+
+(defun sc::edit-icon-help ()
+  (message "Left=> CLEAR  Middle=> SET  Left+Middle=> HOTSPOT  Right=> MENU"))
+
+(defun sc::pack-buffer-to-cursor ()
+    (sc::pack-buffer-to-icon *edit-icon*)
+    (sc:set-cursor *edit-icon*))
+
+(defun sc::menu-choose-cursor (window x y)
+  "Presents a menu of cursor names, and returns one or nil"
+  (let ((curs sc::cursors) 
+	(items))
+    (while curs
+      (push (sc::menu-item-for-cursor (car curs)) items)
+      (setq curs (cdr curs)))
+    (push (list "Choose Cursor") items)
+    (setq menu (menu-create items))
+    (sun-menu-evaluate window x y menu)))
+
+(defun sc::menu-item-for-cursor (cursor)
+  "apply function to selected cursor"
+  (list (symbol-name cursor) 'quote cursor))
+
+(defun sc::hotspot (window x y)
+  (aset *edit-icon* 0 x)
+  (aset *edit-icon* 1 y)
+  (sc::goto-hotspot))
+
+(defun sc::goto-hotspot ()
+  (goto-line (1+ (aref *edit-icon* 1)))
+  (move-to-column (aref *edit-icon* 0)))
+
+(defun sc::display-icon (icon)
+  (setq *edit-icon* (copy-sequence icon))
+  (let ((string (aref *edit-icon* 2))
+	(index 0))
+    (while (< index 32)
+      (let ((char (aref string index))
+	    (bit 128))
+	(while (> bit 0)
+	  (insert (sc::char-at-bit char bit))
+	  (setq bit (lsh bit -1))))
+      (if (eq 1 (% index 2)) (newline))
+      (setq index (1+ index))))
+  (sc::goto-hotspot))
+
+(defun sc::char-at-bit (char bit)
+  (if (> (logand char bit) 0) "@" " "))
+
+(defun sc::pack-buffer-to-icon (icon)
+  "Pack 16 x 16 field into icon string"
+  (goto-char (point-min))
+  (aset icon 0 (aref *edit-icon* 0))
+  (aset icon 1 (aref *edit-icon* 1))
+  (aset icon 2 (mapconcat 'sc::pack-one-line "1234567890123456" ""))
+  (sc::goto-hotspot)
+  )
+  
+(defun sc::pack-one-line (dummy)
+  (let* (char chr1 chr2)
+    (setq char 0 chr1 (mapconcat 'sc::pack-one-char "12345678" "") chr1 char)
+    (setq char 0 chr2 (mapconcat 'sc::pack-one-char "12345678" "") chr2 char)
+    (forward-line 1)
+    (concat (char-to-string chr1) (char-to-string chr2))
+    ))
+
+(defun sc::pack-one-char (dummy)
+  "pack following char into char, unless eolp"
+  (if (or (eolp) (char-equal (following-char) 32))
+      (setq char (lsh char 1)) 
+    (setq char (1+ (lsh char 1))))
+  (if (not (eolp))(forward-char)))
+