/usr/share/common-lisp/source/clx/shape.lisp is in cl-clx-sbcl 0.7.4-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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;;; ---------------------------------------------------------------------------
;;; Title: X11 Shape extension
;;; Created: 1999-05-14 11:31
;;; Author: Gilbert Baumann <unk6@rz.uni-karlsruhe.de>
;;; ---------------------------------------------------------------------------
;;; (c) copyright 1999 by Gilbert Baumann
;;;
;;; Permission is granted to any individual or institution to use,
;;; copy, modify, and distribute this software, provided that this
;;; complete copyright and permission notice is maintained, intact, in
;;; all copies and supporting documentation.
;;;
;;; This program 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.
;;;
;;; Use xc/doc/hardcopy/Xext/shape.PS.gz obtainable from e.g.
;; ftp://ftp.xfree86.org/pub/XFree86/current/untarred/xc/hardcopy/Xext/shape.PS.gz
(in-package :xlib)
(export '(shape-query-version
shape-rectangles
shape-mask
shape-combine
shape-offset
shape-query-extents
shape-select-input
shape-input-selected-p
shape-get-rectangles)
:xlib)
(define-extension "SHAPE"
:events (:shape-notify))
(declare-event :shape-notify
((data (member8 :bounding :clip)) kind) ;shape kind
(card16 sequence)
(window (window event-window)) ;affected window
(int16 x) ;extents
(int16 y)
(card16 width)
(card16 height)
((or null card32) time) ;timestamp
(boolean shaped-p))
(defun encode-shape-kind (kind)
(ecase kind
(:bounding 0)
(:clip 1)))
(defun encode-shape-operation (operation)
(ecase operation
(:set 0)
(:union 1)
(:interset 2)
(:subtract 3)
(:invert 4)))
(defun encode-shape-rectangle-ordering (ordering)
(ecase ordering
((:unsorted :un-sorted nil) 0)
((:y-sorted) 1)
((:yx-sorted) 2)
((:yx-banded) 3)))
(defun shape-query-version (display)
(with-buffer-request-and-reply (display (extension-opcode display "SHAPE")
nil :sizes 16)
((data 0))
(values
(card16-get 8)
(card16-get 10))))
(defun shape-rectangles (window rectangles
&key (kind :bounding)
(x-offset 0)
(y-offset 0)
(operation :set)
(ordering :unsorted))
(let* ((display (xlib:window-display window)))
(with-buffer-request (display (extension-opcode display "SHAPE"))
(data 1)
(card8 (encode-shape-operation operation))
(card8 (encode-shape-kind kind))
(card8 (encode-shape-rectangle-ordering ordering))
(card8 0) ;unused
(window window)
(int16 x-offset)
(int16 y-offset)
((sequence :format int16) rectangles))))
(defun shape-mask (window pixmap
&key (kind :bounding)
(x-offset 0)
(y-offset 0)
(operation :set))
(let* ((display (xlib:window-display window)))
(with-buffer-request (display (extension-opcode display "SHAPE"))
(data 2)
(card8 (encode-shape-operation operation))
(card8 (encode-shape-kind kind))
(card16 0) ;unused
(window window)
(int16 x-offset)
(int16 y-offset)
((or pixmap (member :none)) pixmap))))
(defun shape-combine (window source-window
&key (kind :bounding)
(source-kind :bounding)
(x-offset 0)
(y-offset 0)
(operation :set))
(let* ((display (xlib:window-display window)))
(with-buffer-request (display (extension-opcode display "SHAPE"))
(data 3)
(card8 (encode-shape-operation operation))
(card8 (encode-shape-kind kind))
(card8 (encode-shape-kind source-kind))
(card8 0) ;unused
(window window)
(int16 x-offset)
(int16 y-offset)
(window source-window))))
(defun shape-offset (window &key (kind :bounding) (x-offset 0) (y-offset 0))
(let* ((display (xlib:window-display window)))
(with-buffer-request (display (extension-opcode display "SHAPE"))
(data 4)
(card8 (encode-shape-kind kind))
(card8 0) (card8 0) (card8 0) ;unused
(window window)
(int16 x-offset)
(int16 y-offset))))
(defun shape-query-extents (window)
(let* ((display (xlib:window-display window)))
(with-buffer-request-and-reply (display (extension-opcode display "SHAPE")
nil :sizes (8 16 32))
((data 5)
(window window))
(values
(boolean-get 8) ;bounding shaped
(boolean-get 9) ;clip shaped
(int16-get 12) ;bounding shape extents x
(int16-get 14) ;bounding shape extents y
(card16-get 16) ;bounding shape extents width
(card16-get 18) ;bounding shape extents height
(int16-get 20) ;clip shape extents x
(int16-get 22) ;clip shape extents y
(card16-get 24) ;clip shape extents width
(card16-get 26))))) ;clip shape extents height
(defun shape-select-input (window selected-p)
(let* ((display (window-display window)))
(with-buffer-request (display (extension-opcode display "SHAPE"))
(data 6)
(window window)
(boolean selected-p)) ))
(defun shape-input-selected-p (window)
(let* ((display (window-display window)))
(with-buffer-request-and-reply (display (extension-opcode display "SHAPE")
nil :sizes (8))
((data 7) ;also wrong in documentation
(window window))
(boolean-get 1))))
(defun shape-get-rectangles (window &optional (kind :bounding)
(result-type 'list))
(let* ((display (window-display window)))
(with-buffer-request-and-reply (display (extension-opcode display "SHAPE")
nil :sizes (8 16 32))
((data 8) ;this was wrong in the specification
(window window)
(card8 (ecase kind
(:bounding 0)
(:clip 1))))
(values
(sequence-get :length (print (* 4 (card32-get 8)))
:result-type result-type
:format int16
:index +replysize+)
(ecase (card8-get 1)
(0 :unsorted)
(1 :y-sorted)
(2 :yx-sorted)
(3 :yx-banded) )))))
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