  -*- Mode : LISP ; Syntax : Common - lisp ; Package : XLIB ; Base : 10 ; Lowercase : Yes -*-

;;;
			  TEXAS INSTRUMENTS INCORPORATED
;;;				  P.O. BOX 2909
			        AUSTIN , TEXAS 78769
;;;
  Copyright ( C ) 1987 Texas Instruments Incorporated .
;;;
;;; 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.
;;;
  Texas Instruments Incorporated provides this software " as is " without
;;; express or implied warranty.
;;;
#+cmu
(ext:file-comment
  "$Header: /cvsroot/clocc/clocc/src/gui/clx/requests.lisp,v 1.5 2003/02/28 20:23:13 pvaneynd Exp $")

(in-package :xlib)

(defun create-window (&key
		      window
		      (parent (required-arg parent))
		      (x (required-arg x))
		      (y (required-arg y))
		      (width (required-arg width))
		      (height (required-arg height))
		      (depth 0) (border-width 0)
		      (class :copy) (visual :copy)
		      background border
		      bit-gravity gravity
		      backing-store backing-planes backing-pixel save-under
		      event-mask do-not-propagate-mask override-redirect
		      colormap cursor)
  ;; Display is obtained from parent.  Only non-nil attributes are passed on in
  ;; the request: the function makes no assumptions about what the actual protocol
  ;; defaults are.  Width and height are the inside size, excluding border.
  (declare (type (or null window) window)
	   (type window parent)		; required
	   (type int16 x y) ;required
	   (type card16 width height) ;required
	   (type card16 depth border-width)
	   (type (member :copy :input-output :input-only) class)
	   (type (or (member :copy) visual-info resource-id) visual)
	   (type (or null (member :none :parent-relative) pixel pixmap) background)
	   (type (or null (member :copy) pixel pixmap) border)
	   (type (or null bit-gravity) bit-gravity)
	   (type (or null win-gravity) gravity)
	   (type (or null (member :not-useful :when-mapped :always)) backing-store)
	   (type (or null pixel) backing-planes backing-pixel)
	   (type (or null event-mask) event-mask)
	   (type (or null device-event-mask) do-not-propagate-mask)
	   (type (or null (member :on :off)) save-under override-redirect)
	   (type (or null (member :copy) colormap) colormap)
	   (type (or null (member :none) cursor) cursor))
  (declare (clx-values window))
  (let* ((display (window-display parent))
	 (window (or window (make-window :display display)))
	 (wid (allocate-resource-id display window 'window))
	 back-pixmap back-pixel
	 border-pixmap border-pixel)
    (declare (type display display)
	     (type window window)
	     (type resource-id wid)
	     (type (or null resource-id) back-pixmap border-pixmap)
	     (type (or null pixel) back-pixel border-pixel))
    (setf (window-id window) wid)
    (case background
      ((nil) nil)
      (:none (setq back-pixmap 0))
      (:parent-relative (setq back-pixmap 1))
      (otherwise
       (if (type? background 'pixmap)
	   (setq back-pixmap (pixmap-id background))
	 (if (integerp background)
	     (setq back-pixel background)
	   (x-type-error background
			 '(or null (member :none :parent-relative) integer pixmap))))))
    (case border
      ((nil) nil)
      (:copy (setq border-pixmap 0))
      (otherwise
       (if (type? border 'pixmap)
	   (setq border-pixmap (pixmap-id border))
	 (if (integerp border)
	     (setq border-pixel border)
	   (x-type-error border '(or null (member :copy) integer pixmap))))))
    (when event-mask
      (setq event-mask (encode-event-mask event-mask)))
    (when do-not-propagate-mask
      (setq do-not-propagate-mask (encode-device-event-mask do-not-propagate-mask)))

						;Make the request
    (with-buffer-request (display +x-createwindow+)
      (data depth)
      (resource-id wid)
      (window parent)
      (int16 x y)
      (card16 width height border-width)
      ((member16 :copy :input-output :input-only) class)
      (resource-id (cond ((eq visual :copy)
			  0)
			 ((typep visual 'resource-id)
			  visual)
			 (t
			  (visual-info-id visual))))
      (mask (card32 back-pixmap back-pixel border-pixmap border-pixel)
	    ((member-vector *bit-gravity-vector*) bit-gravity)
	    ((member-vector *win-gravity-vector*) gravity)
	    ((member :not-useful :when-mapped :always) backing-store)
	    (card32  backing-planes backing-pixel)
	    ((member :off :on) override-redirect save-under)
	    (card32 event-mask do-not-propagate-mask)
	    ((or (member :copy) colormap) colormap)
	    ((or (member :none) cursor) cursor)))
    window))

(defun destroy-window (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-destroywindow+)
    (window window)))

(defun destroy-subwindows (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-destroysubwindows+)
    (window window)))

(defun add-to-save-set (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-changesaveset+)
    (data 0)
    (window window)))

(defun remove-from-save-set (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-changesaveset+)
    (data 1)
    (window window)))

(defun reparent-window (window parent x y)
  (declare (type window window parent)
	   (type int16 x y))
  (with-buffer-request ((window-display window) +x-reparentwindow+)
    (window window parent)
    (int16 x y)))

(defun map-window (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-mapwindow+)
    (window window)))

(defun map-subwindows (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-mapsubwindows+)
    (window window)))

(defun unmap-window (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-unmapwindow+)
    (window window)))

(defun unmap-subwindows (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-unmapsubwindows+)
    (window window)))

(defun circulate-window-up (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-circulatewindow+)
    (data 0)
    (window window)))

(defun circulate-window-down (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-circulatewindow+)
    (data 1)
    (window window)))

(defun query-tree (window &key (result-type 'list))
  (declare (type window window)
	   (type t result-type)) ;;type specifier
  (declare (clx-values (clx-sequence window) parent root))
  (let ((display (window-display window)))
    (multiple-value-bind (root parent sequence)
	(with-buffer-request-and-reply (display +x-querytree+ nil :sizes (8 16 32))
	     ((window window))
	  (values
	    (window-get 8)
	    (resource-id-get 12)
	    (sequence-get :length (card16-get 16) :result-type result-type
			  :index +replysize+)))
      ;; Parent is NIL for root window
      (setq parent (and (plusp parent) (lookup-window display parent)))
  Convert ID 's to window 's
	(setf (elt sequence i) (lookup-window display (elt sequence i))))
      (values sequence parent root))))

;; Although atom-ids are not visible in the normal user interface, atom-ids might
;; appear in window properties and other user data, so conversion hooks are needed.

(defun intern-atom (display name)
  (declare (type display display)
	   (type xatom name))
  (declare (clx-values resource-id))
  (let ((name (if (or (null name) (keywordp name))
		  name
		(kintern (string name)))))
    (declare (type symbol name))
    (or (atom-id name display)
	(let ((string (symbol-name name)))
	  (declare (type string string))
	  (multiple-value-bind (id)
	      (with-buffer-request-and-reply (display +x-internatom+ 12 :sizes 32)
		   ((data 0)
		    (card16 (length string))
		    (pad16 nil)
		    (string string))
		(values
		  (resource-id-get 8)))
	    (declare (type resource-id id))
	    (setf (atom-id name display) id)
	    id)))))

(defun find-atom (display name)
  Same as INTERN - ATOM , but with the ONLY - IF - EXISTS flag True
  (declare (type display display)
	   (type xatom name))
  (declare (clx-values (or null resource-id)))
  (let ((name (if (or (null name) (keywordp name))
		  name
		(kintern (string name)))))
    (declare (type symbol name))
    (or (atom-id name display)
	(let ((string (symbol-name name)))
	  (declare (type string string))
	  (multiple-value-bind (id)
	      (with-buffer-request-and-reply (display +x-internatom+ 12 :sizes 32)
		   ((data 1)
		    (card16 (length string))
		    (pad16 nil)
		    (string string))
		(values
		  (or-get 8 null resource-id)))
	    (declare (type (or null resource-id) id))
	    (when id 
	      (setf (atom-id name display) id))
	    id)))))

(defun atom-name (display atom-id)
  (declare (type display display)
	   (type resource-id atom-id))
  (declare (clx-values keyword))
  (if (zerop atom-id)
      nil
  (or (id-atom atom-id display)
      (let ((keyword
	      (kintern
		  (with-buffer-request-and-reply
		       (display +x-getatomname+ nil :sizes (16))
		     ((resource-id atom-id))
		  (values
		    (string-get (card16-get 8) +replysize+))))))
	(declare (type keyword keyword))
	(setf (atom-id keyword display) atom-id)
	  keyword))))

;;; For binary compatibility with older code
(defun lookup-xatom (display atom-id)
  (declare (type display display)
	   (type resource-id atom-id))
  (atom-name display atom-id))

(defun change-property (window property data type format
		       &key (mode :replace) (start 0) end transform)
  ; Start and end affect sub-sequence extracted from data.
  Transform is applied to each extracted element .
  (declare (type window window)
	   (type xatom property type)
	   (type (member 8 16 32) format)
	   (type sequence data)
	   (type (member :replace :prepend :append) mode)
	   (type array-index start)
	   (type (or null array-index) end)
	   (type (or null (function (t) integer)) transform))
  (unless end (setq end (length data)))
  (let* ((display (window-display window))
	 (length (index- end start))
	 (property-id (intern-atom display property))
	 (type-id (intern-atom display type)))
    (declare (type display display)
	     (type array-index length)
	     (type resource-id property-id type-id))
    (with-buffer-request (display +x-changeproperty+)
      ((data (member :replace :prepend :append)) mode)
      (window window)
      (resource-id property-id type-id)
      (card8 format)
      (card32 length)
      (progn
	(ecase format
	  (8  (sequence-put 24 data :format card8
			    :start start :end end :transform transform))
	  (16 (sequence-put 24 data :format card16
			    :start start :end end :transform transform))
	  (32 (sequence-put 24 data :format card32
			    :start start :end end :transform transform)))))))

(defun delete-property (window property)
  (declare (type window window)
	   (type xatom property))
  (let* ((display (window-display window))
	 (property-id (intern-atom display property)))
    (declare (type display display)
	     (type resource-id property-id))
    (with-buffer-request (display +x-deleteproperty+)
      (window window)
      (resource-id property-id))))

(defun get-property (window property
		     &key type (start 0) end delete-p (result-type 'list) transform)
  Transform is applied to each integer retrieved .
  (declare (type window window)
	   (type xatom property)
	   (type (or null xatom) type)
	   (type array-index start)
	   (type (or null array-index) end)
	   (type generalized-boolean delete-p)
	   (type t result-type)			;a sequence type
	   (type (or null (function (integer) t)) transform))
  (declare (clx-values data (or null type) format bytes-after))
  (let* ((display (window-display window))
	 (property-id (intern-atom display property))
	 (type-id (and type (intern-atom display type))))
    (declare (type display display)
	     (type resource-id property-id)
	     (type (or null resource-id) type-id))
    (multiple-value-bind (reply-format reply-type bytes-after data)
	(with-buffer-request-and-reply (display +x-getproperty+ nil :sizes (8 32))
	     (((data boolean) delete-p)
	      (window window)
	      (resource-id property-id)
	      ((or null resource-id) type-id)
	      (card32 start)
	      (card32 (index- (or end 64000) start)))
	  (let ((reply-format (card8-get 1))
		(reply-type (card32-get 8))
		(bytes-after (card32-get 12))
		(nitems (card32-get 16)))
	    (values
	      reply-format
	      reply-type
	      bytes-after
	      (and (plusp nitems)
		   (ecase reply-format
		     (0  nil) ;; (make-sequence result-type 0) ;; Property not found.
		     (8  (sequence-get :result-type result-type :format card8
				       :length nitems :transform transform
				       :index +replysize+))
		     (16 (sequence-get :result-type result-type :format card16
				       :length nitems :transform transform
				       :index +replysize+))
		     (32 (sequence-get :result-type result-type :format card32
				       :length nitems :transform transform
				       :index +replysize+)))))))
      (values data
	      (and (plusp reply-type) (atom-name display reply-type))
	      reply-format
	      bytes-after))))

(defun rotate-properties (window properties &optional (delta 1))
  ;; Positive rotates left, negative rotates right (opposite of actual protocol request).
  (declare (type window window)
	   (type sequence properties) ;; sequence of xatom
	   (type int16 delta))
  (let* ((display (window-display window))
	 (length (length properties))
	 (sequence (make-array length)))
    (declare (type display display)
	     (type array-index length))
    (with-vector (sequence vector)
  Atoms must be interned before the RotateProperties request
  is started to allow InternAtom requests to be made .
      (dotimes (i length)
	(setf (aref sequence i) (intern-atom display (elt properties i))))
      (with-buffer-request (display +x-rotateproperties+)
	(window window)
	(card16 length)
	(int16 (- delta))
	((sequence :end length) sequence))))
  nil)

(defun list-properties (window &key (result-type 'list))
  (declare (type window window)
	   (type t result-type)) ;; a sequence type
  (declare (clx-values (clx-sequence keyword)))
  (let ((display (window-display window)))
    (multiple-value-bind (seq)
	(with-buffer-request-and-reply (display +x-listproperties+ nil :sizes 16)
	     ((window window))
	  (values
	    (sequence-get :result-type result-type :length (card16-get 8)
			  :index +replysize+)))
      ;; lookup the atoms in the sequence
      (if (listp seq)
	  (do ((elt seq (cdr elt)))
	      ((endp elt) seq)
	    (setf (car elt) (atom-name display (car elt))))
	(dotimes (i (length seq) seq)
	  (setf (aref seq i) (atom-name display (aref seq i))))))))

(defun selection-owner (display selection)
  (declare (type display display)
	   (type xatom selection))
  (declare (clx-values (or null window)))
  (let ((selection-id (intern-atom display selection)))
    (declare (type resource-id selection-id))
    (multiple-value-bind (window)
	(with-buffer-request-and-reply (display +x-getselectionowner+ 12 :sizes 32)
	     ((resource-id selection-id))
	  (values
	    (resource-id-or-nil-get 8)))
      (and window (lookup-window display window)))))

(defun set-selection-owner (display selection owner &optional time)
  (declare (type display display)
	   (type xatom selection)
	   (type (or null window) owner)
	   (type timestamp time))
  (let ((selection-id (intern-atom display selection)))
    (declare (type resource-id selection-id))
    (with-buffer-request (display +x-setselectionowner+)
      ((or null window) owner)
      (resource-id selection-id)
      ((or null card32) time))
    owner))

(defsetf selection-owner (display selection &optional time) (owner)
  A bit strange , but retains setf form .
  `(set-selection-owner ,display ,selection ,owner ,time))

(defun convert-selection (selection type requestor &optional property time)
  (declare (type xatom selection type)
	   (type window requestor)
	   (type (or null xatom) property)
	   (type timestamp time))
  (let* ((display (window-display requestor))
	 (selection-id (intern-atom display selection))
	 (type-id (intern-atom display type))
	 (property-id (and property (intern-atom display property))))
    (declare (type display display)
	     (type resource-id selection-id type-id)
	     (type (or null resource-id) property-id))
    (with-buffer-request (display +x-convertselection+)
      (window requestor)
      (resource-id selection-id type-id)
      ((or null resource-id) property-id)
      ((or null card32) time))))

(defun send-event (window event-key event-mask &rest args
		   &key propagate-p display &allow-other-keys)
  ;; Additional arguments depend on event-key, and are as specified further below
  ;; with declare-event, except that both resource-ids and resource objects are
  ;; accepted in the event components.  The display argument is only required if the
  ;; window is :pointer-window or :input-focus.
  (declare (type (or window (member :pointer-window :input-focus)) window)
	   (type event-key event-key)
	   (type (or null event-mask) event-mask)
	   (type generalized-boolean propagate-p)
	   (type (or null display) display)
	   (dynamic-extent args))
  (unless event-mask (setq event-mask 0))
  (unless display (setq display (window-display window)))
  (let ((internal-event-code (get-event-code event-key))
	(external-event-code (get-external-event-code display event-key)))
    (declare (type card8 internal-event-code external-event-code))
    ;; Ensure keyword atom-id's are cached
    (dolist (arg (cdr (assoc event-key '((:property-notify :atom)
					 (:selection-clear :selection)
					 (:selection-request :selection :target :property)
					 (:selection-notify :selection :target :property)
					 (:client-message :type))
			     :test #'eq)))
      (let ((keyword (getf args arg)))
	(intern-atom display keyword)))
    ;; Make the sendevent request
    (with-buffer-request (display +x-sendevent+)
      ((data boolean) propagate-p)
  3 word request + 8 words for event = 11
      ((or (member :pointer-window :input-focus) window) window)
      (card32 (encode-event-mask event-mask))
      (card8 external-event-code)
      (progn
	(apply (svref *event-send-vector* internal-event-code) display args)
	(setf (buffer-boffset display) (index+ buffer-boffset 44))))))

(defun grab-pointer (window event-mask
		     &key owner-p sync-pointer-p sync-keyboard-p confine-to cursor time)
  (declare (type window window)
	   (type pointer-event-mask event-mask)
	   (type generalized-boolean owner-p sync-pointer-p sync-keyboard-p)
	   (type (or null window) confine-to)
	   (type (or null cursor) cursor)
	   (type timestamp time))
  (declare (clx-values grab-status))
  (let ((display (window-display window)))
    (with-buffer-request-and-reply (display +x-grabpointer+ nil :sizes 8)
	 (((data boolean) owner-p)
	  (window window)
	  (card16 (encode-pointer-event-mask event-mask))
	  (boolean (not sync-pointer-p) (not sync-keyboard-p))
	  ((or null window) confine-to)
	  ((or null cursor) cursor)
	  ((or null card32) time))
      (values
	(member8-get 1 :success :already-grabbed :invalid-time :not-viewable :frozen)))))

(defun ungrab-pointer (display &key time)
  (declare (type timestamp time))
  (with-buffer-request (display +x-ungrabpointer+)
    ((or null card32) time)))

(defun grab-button (window button event-mask
		    &key (modifiers :any)
			 owner-p sync-pointer-p sync-keyboard-p confine-to cursor)
  (declare (type window window)
	   (type (or (member :any) card8) button)
	   (type modifier-mask modifiers)
	   (type pointer-event-mask event-mask)
	   (type generalized-boolean owner-p sync-pointer-p sync-keyboard-p)
	   (type (or null window) confine-to)
	   (type (or null cursor) cursor))
  (with-buffer-request ((window-display window) +x-grabbutton+)
    ((data boolean) owner-p)
    (window window)
    (card16 (encode-pointer-event-mask event-mask))
    (boolean (not sync-pointer-p) (not sync-keyboard-p))
    ((or null window) confine-to)
    ((or null cursor) cursor)
    (card8 (if (eq button :any) 0 button))
    (pad8 1)
    (card16 (encode-modifier-mask modifiers))))

(defun ungrab-button (window button &key (modifiers :any))
  (declare (type window window)
	   (type (or (member :any) card8) button)
	   (type modifier-mask modifiers))
  (with-buffer-request ((window-display window) +x-ungrabbutton+)
    (data (if (eq button :any) 0 button))
    (window window)
    (card16 (encode-modifier-mask modifiers))))

(defun change-active-pointer-grab (display event-mask &optional cursor time)
  (declare (type display display)
	   (type pointer-event-mask event-mask)
	   (type (or null cursor) cursor)
	   (type timestamp time))
  (with-buffer-request (display +x-changeactivepointergrab+)
    ((or null cursor) cursor)
    ((or null card32) time)
    (card16 (encode-pointer-event-mask event-mask))))

(defun grab-keyboard (window &key owner-p sync-pointer-p sync-keyboard-p time)
  (declare (type window window)
	   (type generalized-boolean owner-p sync-pointer-p sync-keyboard-p)
	   (type timestamp time))
  (declare (clx-values grab-status))
  (let ((display (window-display window)))
    (with-buffer-request-and-reply (display +x-grabkeyboard+ nil :sizes 8)
	 (((data boolean) owner-p)
	  (window window)
	  ((or null card32) time)
	  (boolean (not sync-pointer-p) (not sync-keyboard-p)))
      (values
	(member8-get 1 :success :already-grabbed :invalid-time :not-viewable :frozen)))))

(defun ungrab-keyboard (display &key time)
  (declare (type display display)
	   (type timestamp time))
  (with-buffer-request (display +x-ungrabkeyboard+)
    ((or null card32) time)))

(defun grab-key (window key &key (modifiers 0) owner-p sync-pointer-p sync-keyboard-p)
  (declare (type window window)
	   (type generalized-boolean owner-p sync-pointer-p sync-keyboard-p)
	   (type (or (member :any) card8) key)
	   (type modifier-mask modifiers))
  (with-buffer-request ((window-display window) +x-grabkey+)
    ((data boolean) owner-p)
    (window window)
    (card16 (encode-modifier-mask modifiers))
    (card8 (if (eq key :any) 0 key))
    (boolean (not sync-pointer-p) (not sync-keyboard-p))))

(defun ungrab-key (window key &key (modifiers 0))
  (declare (type window window)
	   (type (or (member :any) card8) key)
	   (type modifier-mask modifiers))
  (with-buffer-request ((window-display window) +x-ungrabkey+)
    (data (if (eq key :any) 0 key))
    (window window)
    (card16 (encode-modifier-mask modifiers))))

(defun allow-events (display mode &optional time)
  (declare (type display display)
	   (type (member :async-pointer :sync-pointer :replay-pointer
			 :async-keyboard :sync-keyboard :replay-keyboard
			 :async-both :sync-both)
		 mode)
	   (type timestamp time))
  (with-buffer-request (display +x-allowevents+)
    ((data (member :async-pointer :sync-pointer :replay-pointer
		   :async-keyboard :sync-keyboard :replay-keyboard
		   :async-both :sync-both))
     mode)
    ((or null card32) time)))

(defun grab-server (display)
  (declare (type display display))
  (with-buffer-request (display +x-grabserver+)))

(defun ungrab-server (display)
  (with-buffer-request (display +x-ungrabserver+)))

(defmacro with-server-grabbed ((display) &body body)
  ;; The body is not surrounded by a with-display.
  (let ((disp (if (symbolp display) display (gensym))))
    `(let ((,disp ,display))
       (declare (type display ,disp))
       (unwind-protect
	   (progn
	     (grab-server ,disp)
	     ,@body)
	 (ungrab-server ,disp)))))

(defun query-pointer (window)
  (declare (type window window))
  (declare (clx-values x y same-screen-p child mask root-x root-y root))
  (let ((display (window-display window)))
    (with-buffer-request-and-reply (display +x-querypointer+ 26 :sizes (8 16 32))
	 ((window window))
      (values
	(int16-get 20)
	(int16-get 22)
	(boolean-get 1)
	(or-get 12 null window)
	(card16-get 24)
	(int16-get 16)
	(int16-get 18)
	(window-get 8)))))

(defun pointer-position (window)
  (declare (type window window))
  (declare (clx-values x y same-screen-p))
  (let ((display (window-display window)))
    (with-buffer-request-and-reply (display +x-querypointer+ 24 :sizes (8 16))
	 ((window window))
      (values
	(int16-get 20)
	(int16-get 22)
	(boolean-get 1)))))

(defun global-pointer-position (display)
  (declare (type display display))
  (declare (clx-values root-x root-y root))
  (with-buffer-request-and-reply (display +x-querypointer+ 20 :sizes (16 32))
       ((window (screen-root (first (display-roots display)))))
    (values
      (int16-get 16)
      (int16-get 18)
      (window-get 8))))

(defun motion-events (window &key start stop (result-type 'list))
  (declare (type window window)
	   (type timestamp start stop)
	   (type t result-type)) ;; a type specifier
  (declare (clx-values (repeat-seq (integer x) (integer y) (timestamp time))))
  (let ((display (window-display window)))
    (with-buffer-request-and-reply (display +x-getmotionevents+ nil :sizes 32)
	 ((window window)
	  ((or null card32) start stop))
      (values
	(sequence-get :result-type result-type :length (index* (card32-get 8) 3)
		      :index +replysize+)))))

(defun translate-coordinates (src src-x src-y dst)
  ;; Returns NIL when not on the same screen
  (declare (type window src)
	   (type int16 src-x src-y)
	   (type window dst))
  (declare (clx-values dst-x dst-y child))
  (let ((display (window-display src)))
    (with-buffer-request-and-reply (display +x-translatecoords+ 16 :sizes (8 16 32))
	 ((window src dst)
	  (int16 src-x src-y))
      (and (boolean-get 1)
	   (values
	     (int16-get 12)
	     (int16-get 14)
	     (or-get 8 null window))))))

(defun warp-pointer (dst dst-x dst-y)
  (declare (type window dst)
	   (type int16 dst-x dst-y))
  (with-buffer-request ((window-display dst) +x-warppointer+)
    (resource-id 0) ;; None
    (window dst)
    (int16 0 0)
    (card16 0 0)
    (int16 dst-x dst-y)))

(defun warp-pointer-relative (display x-off y-off)
  (declare (type display display)
	   (type int16 x-off y-off))
  (with-buffer-request (display +x-warppointer+)
    (resource-id 0) ;; None
    (resource-id 0) ;; None
    (int16 0 0)
    (card16 0 0)
    (int16 x-off y-off)))

(defun warp-pointer-if-inside (dst dst-x dst-y src src-x src-y
			       &optional src-width src-height)
  Passing in a zero src - width or src - height is a no - op .
  A null src - width or src - height translates into a zero value in the protocol request .
  (declare (type window dst src)
	   (type int16 dst-x dst-y src-x src-y)
	   (type (or null card16) src-width src-height))
  (unless (or (eql src-width 0) (eql src-height 0))
    (with-buffer-request ((window-display dst) +x-warppointer+)
      (window src dst)
      (int16 src-x src-y)
      (card16 (or src-width 0) (or src-height 0))
      (int16 dst-x dst-y))))

(defun warp-pointer-relative-if-inside (x-off y-off src src-x src-y
					&optional src-width src-height)
  Passing in a zero src - width or src - height is a no - op .
  A null src - width or src - height translates into a zero value in the protocol request .
  (declare (type window src)
	   (type int16 x-off y-off src-x src-y)
	   (type (or null card16) src-width src-height))
  (unless (or (eql src-width 0) (eql src-height 0))
    (with-buffer-request ((window-display src) +x-warppointer+)
      (window src)
      (resource-id 0) ;; None
      (int16 src-x src-y)
      (card16 (or src-width 0) (or src-height 0))
      (int16 x-off y-off))))

(defun set-input-focus (display focus revert-to &optional time)
  (declare (type display display)
	   (type (or (member :none :pointer-root) window) focus)
	   (type (member :none :pointer-root :parent) revert-to)
	   (type timestamp time))
  (with-buffer-request (display +x-setinputfocus+)
    ((data (member :none :pointer-root :parent)) revert-to)
    ((or window (member :none :pointer-root)) focus)
    ((or null card32) time)))

(defun input-focus (display)
  (declare (type display display))
  (declare (clx-values focus revert-to))
  (with-buffer-request-and-reply (display +x-getinputfocus+ 16 :sizes (8 32))
       ()
    (values
      (or-get 8 window (member :none :pointer-root))
      (member8-get 1 :none :pointer-root :parent))))

(defun query-keymap (display &optional bit-vector)
  (declare (type display display)
	   (type (or null (bit-vector 256)) bit-vector))
  (declare (clx-values (bit-vector 256)))
  (with-buffer-request-and-reply (display +x-querykeymap+ 40 :sizes 8)
       ()
    (values
      (bit-vector256-get 8 8 bit-vector))))

(defun create-pixmap (&key
		      pixmap
		      (width (required-arg width))
		      (height (required-arg height))
		      (depth (required-arg depth))
		      (drawable (required-arg drawable)))
  (declare (type (or null pixmap) pixmap)
	   (type card8 depth) ;; required
	   (type card16 width height) ;; required
	   (type drawable drawable)) ;; required
  (declare (clx-values pixmap))
  (let* ((display (drawable-display drawable))
	 (pixmap (or pixmap (make-pixmap :display display)))
	 (pid (allocate-resource-id display pixmap 'pixmap)))
    (setf (pixmap-id pixmap) pid)
    (with-buffer-request (display +x-createpixmap+)
      (data depth)
      (resource-id pid)
      (drawable drawable)
      (card16 width height))
    pixmap))

(defun free-pixmap (pixmap)
  (declare (type pixmap pixmap))
  (let ((display (pixmap-display pixmap)))
    (with-buffer-request (display +x-freepixmap+)
      (pixmap pixmap))
    (deallocate-resource-id display (pixmap-id pixmap) 'pixmap)))

(defun clear-area (window &key (x 0) (y 0) width height exposures-p)
  Passing in a zero width or height is a no - op .
  A null width or height translates into a zero value in the protocol request .
  (declare (type window window)
	   (type int16 x y)
	   (type (or null card16) width height)
	   (type generalized-boolean exposures-p))
  (unless (or (eql width 0) (eql height 0))
    (with-buffer-request ((window-display window) +x-cleartobackground+)
      ((data boolean) exposures-p)
      (window window)
      (int16 x y)
      (card16 (or width 0) (or height 0)))))

(defun copy-area (src gcontext src-x src-y width height dst dst-x dst-y)
  (declare (type drawable src dst)
	   (type gcontext gcontext)
	   (type int16 src-x src-y dst-x dst-y)
	   (type card16 width height))
  (with-buffer-request ((drawable-display src) +x-copyarea+ :gc-force gcontext)
    (drawable src dst)
    (gcontext gcontext)
    (int16 src-x src-y dst-x dst-y)
    (card16 width height)))

(defun copy-plane (src gcontext plane src-x src-y width height dst dst-x dst-y)
  (declare (type drawable src dst)
	   (type gcontext gcontext)
	   (type pixel plane)
	   (type int16 src-x src-y dst-x dst-y)
	   (type card16 width height))
  (with-buffer-request ((drawable-display src) +x-copyplane+ :gc-force gcontext)
    (drawable src dst)
    (gcontext gcontext)
    (int16 src-x src-y dst-x dst-y)
    (card16 width height)
    (card32 plane)))

(defun create-colormap (visual-info window &optional alloc-p)
  (declare (type (or visual-info resource-id) visual-info)
	   (type window window)
	   (type generalized-boolean alloc-p))
  (declare (clx-values colormap))
  (let ((display (window-display window)))
    (when (typep visual-info 'resource-id)
      (setf visual-info (visual-info display visual-info)))
    (let* ((colormap (make-colormap :display display :visual-info visual-info))
	   (id (allocate-resource-id display colormap 'colormap)))
      (setf (colormap-id colormap) id)
      (with-buffer-request (display +x-createcolormap+)
	((data boolean) alloc-p)
	(card29 id)
	(window window)
	(card29 (visual-info-id visual-info)))
      colormap)))

(defun free-colormap (colormap)
  (declare (type colormap colormap))
  (let ((display (colormap-display colormap)))
    (with-buffer-request (display +x-freecolormap+)
      (colormap colormap))
    (deallocate-resource-id display (colormap-id colormap) 'colormap)))

(defun copy-colormap-and-free (colormap)
  (declare (type colormap colormap))
  (declare (clx-values colormap))
  (let* ((display (colormap-display colormap))
	 (new-colormap (make-colormap :display display
				      :visual-info (colormap-visual-info colormap)))
	 (id (allocate-resource-id display new-colormap 'colormap)))
    (setf (colormap-id new-colormap) id)
    (with-buffer-request (display +x-copycolormapandfree+)
      (resource-id id)
      (colormap colormap))
    new-colormap))

(defun install-colormap (colormap)
  (declare (type colormap colormap))
  (with-buffer-request ((colormap-display colormap) +x-installcolormap+)
    (colormap colormap)))

(defun uninstall-colormap (colormap)
  (declare (type colormap colormap))
  (with-buffer-request ((colormap-display colormap) +x-uninstallcolormap+)
    (colormap colormap)))

(defun installed-colormaps (window &key (result-type 'list))
  (declare (type window window)
  CL type
  (declare (clx-values (clx-sequence colormap)))
  (let ((display (window-display window)))
    (flet ((get-colormap (id)
	     (lookup-colormap display id)))
      (with-buffer-request-and-reply (display +x-listinstalledcolormaps+ nil :sizes 16)
	   ((window window))
	(values
	  (sequence-get :result-type result-type :length (card16-get 8)
			:transform #'get-colormap :index +replysize+))))))

(defun alloc-color (colormap color)
  (declare (type colormap colormap)
	   (type (or stringable color) color))
  (declare (clx-values pixel screen-color exact-color))
  (let ((display (colormap-display colormap)))
    (etypecase color
      (color
	(with-buffer-request-and-reply (display +x-alloccolor+ 20 :sizes (16 32))
	     ((colormap colormap)
	      (rgb-val (color-red color)
		       (color-green color)
		       (color-blue color))
	      (pad16 nil))
	  (values
	    (card32-get 16)
	    (make-color :red (rgb-val-get 8)
			:green (rgb-val-get 10)
			:blue (rgb-val-get 12))
	    color)))
      (stringable
	(let* ((string (string color))
	       (length (length string)))
	  (with-buffer-request-and-reply (display +x-allocnamedcolor+ 24 :sizes (16 32))
	       ((colormap colormap)
		(card16 length)
		(pad16 nil)
		(string string))
	    (values
	      (card32-get 8)
	      (make-color :red (rgb-val-get 18)
			  :green (rgb-val-get 20)
			  :blue (rgb-val-get 22))
	      (make-color :red (rgb-val-get 12)
			  :green (rgb-val-get 14)
			  :blue (rgb-val-get 16)))))))))

(defun alloc-color-cells (colormap colors &key (planes 0) contiguous-p (result-type 'list))
  (declare (type colormap colormap)
	   (type card16 colors planes)
	   (type generalized-boolean contiguous-p)
  CL type
  (declare (clx-values (clx-sequence pixel) (clx-sequence mask)))
  (let ((display (colormap-display colormap)))
    (with-buffer-request-and-reply (display +x-alloccolorcells+ nil :sizes 16)
	 (((data boolean) contiguous-p)
	  (colormap colormap)
	  (card16 colors planes))
      (let ((pixel-length (card16-get 8))
	    (mask-length (card16-get 10)))
	(values
	  (sequence-get :result-type result-type :length pixel-length :index +replysize+)
	  (sequence-get :result-type result-type :length mask-length
			:index (index+ +replysize+ (index* pixel-length 4))))))))

(defun alloc-color-planes (colormap colors
			   &key (reds 0) (greens 0) (blues 0)
			   contiguous-p (result-type 'list))
  (declare (type colormap colormap)
	   (type card16 colors reds greens blues)
	   (type generalized-boolean contiguous-p)
  CL type
  (declare (clx-values (clx-sequence pixel) red-mask green-mask blue-mask))
  (let ((display (colormap-display colormap)))
    (with-buffer-request-and-reply (display +x-alloccolorplanes+ nil :sizes (16 32))
	 (((data boolean) contiguous-p)
	  (colormap colormap)
	  (card16 colors reds greens blues))
      (let ((red-mask (card32-get 12))
	    (green-mask (card32-get 16))
	    (blue-mask (card32-get 20)))
	(values
	  (sequence-get :result-type result-type :length (card16-get 8) :index +replysize+)
	  red-mask green-mask blue-mask)))))

(defun free-colors (colormap pixels &optional (plane-mask 0))
  (declare (type colormap colormap)
	   (type sequence pixels) ;; Sequence of integers
	   (type pixel plane-mask))
  (with-buffer-request ((colormap-display colormap) +x-freecolors+)
    (colormap colormap)
    (card32 plane-mask)
    (sequence pixels)))

(defun store-color (colormap pixel spec &key (red-p t) (green-p t) (blue-p t))
  (declare (type colormap colormap)
	   (type pixel pixel)
	   (type (or stringable color) spec)
	   (type generalized-boolean red-p green-p blue-p))
  (let ((display (colormap-display colormap))
	(flags 0))
    (declare (type display display)
	     (type card8 flags))
    (when red-p (setq flags 1))
    (when green-p (incf flags 2))
    (when blue-p (incf flags 4))
    (etypecase spec
      (color
	(with-buffer-request (display +x-storecolors+)
	  (colormap colormap)
	  (card32 pixel)
	  (rgb-val (color-red spec)
		   (color-green spec)
		   (color-blue spec))
	  (card8 flags)
	  (pad8 nil)))
      (stringable
	(let* ((string (string spec))
	       (length (length string)))
	  (with-buffer-request (display +x-storenamedcolor+)
	    ((data card8) flags)
	    (colormap colormap)
	    (card32 pixel)
	    (card16 length)
	    (pad16 nil)
	    (string string)))))))

(defun store-colors (colormap specs &key (red-p t) (green-p t) (blue-p t))
  ;; If stringables are specified for colors, it is unspecified whether all
  stringables are first resolved and then a single StoreColors protocol request is
  issued , or whether multiple StoreColors protocol requests are issued .
  (declare (type colormap colormap)
	   (type sequence specs)
	   (type generalized-boolean red-p green-p blue-p))
  (etypecase specs
    (list
      (do ((spec specs (cddr spec)))
	  ((endp spec))
	(store-color colormap (car spec) (cadr spec) :red-p red-p :green-p green-p :blue-p blue-p)))
    (vector
      (do ((i 0 (+ i 2))
	   (len (length specs)))
	  ((>= i len))
	(store-color colormap (aref specs i) (aref specs (1+ i)) :red-p red-p :green-p green-p :blue-p blue-p)))))

(defun query-colors (colormap pixels &key (result-type 'list))
  (declare (type colormap colormap)
	   (type sequence pixels) ;; sequence of integer
	   (type t result-type))   ;; a type specifier
  (declare (clx-values (clx-sequence color)))
  (let ((display (colormap-display colormap)))
    (with-buffer-request-and-reply (display +x-querycolors+ nil :sizes (8 16))
	 ((colormap colormap)
	  (sequence pixels))
      (let ((sequence (make-sequence result-type (card16-get 8))))
	(advance-buffer-offset +replysize+)
	(dotimes (i (length sequence) sequence)
	  (setf (elt sequence i)
		(make-color :red (rgb-val-get 0)
			    :green (rgb-val-get 2)
			    :blue (rgb-val-get 4)))
	  (advance-buffer-offset 8))))))

(defun lookup-color (colormap name)
  (declare (type colormap colormap)
	   (type stringable name))
  (declare (clx-values screen-color true-color))
  (let* ((display (colormap-display colormap))
	 (string (string name))
	 (length (length string)))
    (with-buffer-request-and-reply (display +x-lookupcolor+ 20 :sizes 16)
	 ((colormap colormap)
	  (card16 length)
	  (pad16 nil)
	  (string string))
      (values
	(make-color :red (rgb-val-get 14)
		    :green (rgb-val-get 16)
		    :blue (rgb-val-get 18))
	(make-color :red (rgb-val-get 8)
		    :green (rgb-val-get 10)
		    :blue (rgb-val-get 12))))))

(defun create-cursor (&key
		      (source (required-arg source))
		      mask
		      (x (required-arg x))
		      (y (required-arg y))
		      (foreground (required-arg foreground))
		      (background (required-arg background)))
  (declare (type pixmap source) ;; required
	   (type (or null pixmap) mask)
	   (type card16 x y) ;; required
	   (type (or null color) foreground background)) ;; required
  (declare (clx-values cursor))
  (let* ((display (pixmap-display source))
	 (cursor (make-cursor :display display))
	 (cid (allocate-resource-id display cursor 'cursor)))
    (setf (cursor-id cursor) cid)
    (with-buffer-request (display +x-createcursor+)
      (resource-id cid)
      (pixmap source)
      ((or null pixmap) mask)
      (rgb-val (color-red foreground)
	       (color-green foreground)
	       (color-blue foreground))
      (rgb-val (color-red background)
	       (color-green background)
	       (color-blue background))
      (card16 x y))
    cursor))

(defun create-glyph-cursor (&key
			    (source-font (required-arg source-font))
			    (source-char (required-arg source-char))
			    mask-font
			    mask-char
			    (foreground (required-arg foreground))
			    (background (required-arg background)))
  (declare (type font source-font) ;; Required
	   (type card16 source-char) ;; Required
	   (type (or null font) mask-font)
	   (type (or null card16) mask-char)
	   (type color foreground background)) ;; required
  (declare (clx-values cursor))
  (let* ((display (font-display source-font))
	 (cursor (make-cursor :display display))
	 (cid (allocate-resource-id display cursor 'cursor))
	 (source-font-id (font-id source-font))
	 (mask-font-id (if mask-font (font-id mask-font) 0)))
    (setf (cursor-id cursor) cid)
    (unless mask-char (setq mask-char 0))
    (with-buffer-request (display +x-createglyphcursor+)
      (resource-id cid source-font-id mask-font-id)
      (card16 source-char)
      (card16 mask-char)
      (rgb-val (color-red foreground)
	       (color-green foreground)
	       (color-blue foreground))
      (rgb-val (color-red background)
	       (color-green background)
	       (color-blue background)))
    cursor))

(defun free-cursor (cursor)
  (declare (type cursor cursor))
  (let ((display (cursor-display cursor)))
    (with-buffer-request (display +x-freecursor+)
      (cursor cursor))
    (deallocate-resource-id display (cursor-id cursor) 'cursor)))

(defun recolor-cursor (cursor foreground background)
  (declare (type cursor cursor)
	   (type color foreground background))
  (with-buffer-request ((cursor-display cursor) +x-recolorcursor+)
    (cursor cursor)
    (rgb-val (color-red foreground)
	     (color-green foreground)
	     (color-blue foreground))
    (rgb-val (color-red background)
	     (color-green background)
	     (color-blue background))
    ))

(defun query-best-cursor (width height drawable)
  (declare (type card16 width height)
	   (type (or drawable display) drawable))	
  (declare (clx-values width height))
  ;; Drawable can be a display for compatibility.
  (multiple-value-bind (display drawable)
      (if (type? drawable 'drawable)
	  (values (drawable-display drawable) drawable)
	(values drawable (screen-root (display-default-screen drawable))))
    (with-buffer-request-and-reply (display +x-querybestsize+ 12 :sizes 16)
	 ((data 0)
	  (window drawable)
	  (card16 width height))
      (values
	(card16-get 8)
	(card16-get 10)))))

(defun query-best-tile (width height drawable)
  (declare (type card16 width height)
	   (type drawable drawable))
  (declare (clx-values width height))
  (let ((display (drawable-display drawable)))
    (with-buffer-request-and-reply (display +x-querybestsize+ 12 :sizes 16)
	 ((data 1)
	  (drawable drawable)
	  (card16 width height))
      (values
	(card16-get 8)
	(card16-get 10)))))

(defun query-best-stipple (width height drawable)
  (declare (type card16 width height)
	   (type drawable drawable))
  (declare (clx-values width height))
  (let ((display (drawable-display drawable)))
    (with-buffer-request-and-reply (display +x-querybestsize+ 12 :sizes 16)
	 ((data 2)
	  (drawable drawable)
	  (card16 width height))
      (values
	(card16-get 8)
	(card16-get 10)))))

(defun query-extension (display name)
  (declare (type display display)
	   (type stringable name))
  (declare (clx-values major-opcode first-event first-error))
  (let ((string (string name)))
    (with-buffer-request-and-reply (display +x-queryextension+ 12 :sizes 8)
	 ((card16 (length string))
	  (pad16 nil)
	  (string string))
      (and (boolean-get 8)    ;; If present
	   (values
	     (card8-get 9)
	     (card8-get 10)
	     (card8-get 11))))))

(defun list-extensions (display &key (result-type 'list))
  (declare (type display display)
  CL type
  (declare (clx-values (clx-sequence string)))
  (with-buffer-request-and-reply (display +x-listextensions+ size :sizes 8)
       ()
    (values
      (read-sequence-string
	buffer-bbuf (index- size +replysize+) (card8-get 1) result-type +replysize+))))

(defun change-keyboard-control (display &key key-click-percent
				bell-percent bell-pitch bell-duration
				led led-mode key auto-repeat-mode)
  (declare (type display display)
	   (type (or null (member :default) int16) key-click-percent
						   bell-percent bell-pitch bell-duration)
	   (type (or null card8) led key)
	   (type (or null (member :on :off)) led-mode)
	   (type (or null (member :on :off :default)) auto-repeat-mode))
  (when (eq key-click-percent :default) (setq key-click-percent -1))
  (when (eq bell-percent :default) (setq bell-percent -1))
  (when (eq bell-pitch :default) (setq bell-pitch -1))
  (when (eq bell-duration :default) (setq bell-duration -1))
  (with-buffer-request (display +x-changekeyboardcontrol+ :sizes (32))
    (mask
      (integer key-click-percent bell-percent bell-pitch bell-duration)
      (card32 led)
      ((member :off :on) led-mode)
      (card32 key)
      ((member :off :on :default) auto-repeat-mode))))

(defun keyboard-control (display)
  (declare (type display display))
  (declare (clx-values key-click-percent bell-percent bell-pitch bell-duration
		  led-mask global-auto-repeat auto-repeats))
  (with-buffer-request-and-reply (display +x-getkeyboardcontrol+ 32 :sizes (8 16 32))
       ()
    (values
      (card8-get 12)
      (card8-get 13)
      (card16-get 14)
      (card16-get 16)
      (card32-get 8)
      (member8-get 1 :off :on)
      (bit-vector256-get 32))))

;;  The base volume should
;; be considered to be the "desired" volume in the normal case; that is, a
  typical application should call XBell with 0 as the percent .   Rather
;; than using a simple sum, the percent argument is instead used as the
;; percentage of the remaining range to alter the base volume by.  That is,
;; the actual volume is:
;;	 if percent>=0:    base - [(base * percent) / 100] + percent
	  if percent<0 :      base + [ ( base * percent ) / 100 ]

(defun bell (display &optional (percent-from-normal 0))
  ;; It is assumed that an eventual audio extension to X will provide more complete control.
  (declare (type display display)
	   (type int8 percent-from-normal))
  (with-buffer-request (display +x-bell+)
    (data (int8->card8 percent-from-normal))))

(defun pointer-mapping (display &key (result-type 'list))
  (declare (type display display)
  CL type
  (declare (clx-values sequence)) ;; Sequence of card
  (with-buffer-request-and-reply (display +x-getpointermapping+ nil :sizes 8)
       ()
    (values
      (sequence-get :length (card8-get 1) :result-type result-type :format card8
		    :index +replysize+))))

(defun set-pointer-mapping (display map)
  ;; Can signal device-busy.
  (declare (type display display)
	   (type sequence map)) ;; Sequence of card8
  (when (with-buffer-request-and-reply (display +x-setpointermapping+ 2 :sizes 8)
	     ((data (length map))
	      ((sequence :format card8) map))
	  (values
	    (boolean-get 1)))
    (x-error 'device-busy :display display))
  map)

(defsetf pointer-mapping set-pointer-mapping)

(defun change-pointer-control (display &key acceleration threshold)
  ;; Acceleration is rationalized if necessary.
  (declare (type display display)
	   (type (or null (member :default) number) acceleration)
	   (type (or null (member :default) integer) threshold))
  (flet ((rationalize16 (number)
  Rationalize NUMBER into the ratio of two signed 16 bit numbers
	   (declare (type number number))
	   (declare (clx-values numerator denominator))
	   (do* ((rational (rationalize number))
		 (numerator (numerator rational) (ash numerator -1))
		 (denominator (denominator rational) (ash denominator -1)))
		((or (= numerator 1)
		     (and (< (abs numerator) #x8000)
			  (< denominator #x8000)))
		 (values
		   numerator (min denominator #x7fff))))))
    (declare (inline rationalize16))
    (let ((acceleration-p 1)
	  (threshold-p 1)
	  (numerator 0)
	  (denominator 1))
      (declare (type card8 acceleration-p threshold-p)
	       (type int16 numerator denominator))
      (cond ((eq acceleration :default) (setq numerator -1))
	    (acceleration (multiple-value-setq (numerator denominator)
			    (rationalize16 acceleration)))
	    (t (setq acceleration-p 0)))
      (cond ((eq threshold :default) (setq threshold -1))
	    ((null threshold) (setq threshold -1
				    threshold-p 0)))
      (with-buffer-request (display +x-changepointercontrol+)
	(int16 numerator denominator threshold)
	(card8 acceleration-p threshold-p)))))

(defun pointer-control (display)
  (declare (type display display))
  (declare (clx-values acceleration threshold))
  (with-buffer-request-and-reply (display +x-getpointercontrol+ 16 :sizes 16)
       ()
    (values
      (/ (card16-get 8) (card16-get 10))	; Should we float this?
      (card16-get 12))))

(defun set-screen-saver (display timeout interval blanking exposures)
  Timeout and interval are in seconds , will be rounded to minutes .
  (declare (type display display)
	   (type (or (member :default) int16) timeout interval)
	   (type (member :on :off :default :yes :no) blanking exposures))
  (case blanking (:yes (setq blanking :on)) (:no (setq blanking :off)))
  (case exposures (:yes (setq exposures :on)) (:no (setq exposures :off)))
  (when (eq timeout :default) (setq timeout -1))
  (when (eq interval :default) (setq interval -1))
  (with-buffer-request (display +x-setscreensaver+)
    (int16 timeout interval)
    ((member8 :on :off :default) blanking exposures)))

(defun screen-saver (display)
  Returns timeout and interval in seconds .
  (declare (type display display))
  (declare (clx-values timeout interval blanking exposures))
  (with-buffer-request-and-reply (display +x-getscreensaver+ 14 :sizes (8 16))
       ()
    (values
      (card16-get 8)
      (card16-get 10)
      (member8-get 12 :on :off :default)
      (member8-get 13 :on :off :default))))

(defun activate-screen-saver (display)
  (declare (type display display))
  (with-buffer-request (display +x-forcescreensaver+)
    (data 1)))

(defun reset-screen-saver (display)
  (declare (type display display))
  (with-buffer-request (display +x-forcescreensaver+)
    (data 0)))

(defun add-access-host (display host &optional (family :internet))
  ;; A string must be acceptable as a host, but otherwise the possible types for
  ;; host are not constrained, and will likely be very system dependent.
  ;; This implementation uses a list whose car is the family keyword
  ;; (:internet :DECnet :Chaos) and cdr is a list of network address bytes.
  (declare (type display display)
	   (type (or stringable list) host)
	   (type (or null (member :internet :decnet :chaos) card8) family))
  (change-access-host display host family nil))

(defun remove-access-host (display host &optional (family :internet))
  ;; A string must be acceptable as a host, but otherwise the possible types for
  ;; host are not constrained, and will likely be very system dependent.
  ;; This implementation uses a list whose car is the family keyword
  ;; (:internet :DECnet :Chaos) and cdr is a list of network address bytes.
  (declare (type display display)
	   (type (or stringable list) host)
	   (type (or null (member :internet :decnet :chaos) card8) family))
  (change-access-host display host family t))

(defun change-access-host (display host family remove-p)
  (declare (type display display)
	   (type (or stringable list) host)
	   (type (or null (member :internet :decnet :chaos) card8) family))
  (unless (consp host)
    (setq host (host-address host family)))
  (let ((family (car host))
	(address (cdr host)))
    (with-buffer-request (display +x-changehosts+)
      ((data boolean) remove-p)
      (card8 (encode-type (or null (member :internet :decnet :chaos) card32) family))
      (card16 (length address))
      ((sequence :format card8) address))))

(defun access-hosts (display &optional (result-type 'list))
  ;; The type of host objects returned is not constrained, except that the hosts must
  ;; be acceptable to add-access-host and remove-access-host.
  ;; This implementation uses a list whose car is the family keyword
  ;; (:internet :DECnet :Chaos) and cdr is a list of network address bytes.
  (declare (type display display)
  CL type
  (declare (clx-values (clx-sequence host) enabled-p))
  (with-buffer-request-and-reply (display +x-listhosts+ nil :sizes (8 16))
       ()
    (let* ((enabled-p (boolean-get 1))
	   (nhosts (card16-get 8))
	   (sequence (make-sequence result-type nhosts)))
      (advance-buffer-offset +replysize+)
      (dotimes (i nhosts)
	(let ((family (card8-get 0))
	      (len (card16-get 2)))
	  (setf (elt sequence i)
		(cons (if (< family 3)
			  (svref '#(:internet :decnet :chaos) family)
			family)
		      (sequence-get :length len :format card8 :result-type 'list
				    :index (+ buffer-boffset 4))))
	  (advance-buffer-offset (+ 4 (* 4 (ceiling len 4))))))
      (values
	sequence
	enabled-p))))

(defun access-control (display)
  (declare (type display display))
  (declare (clx-values generalized-boolean)) ;; True when access-control is ENABLED
  (with-buffer-request-and-reply (display +x-listhosts+ 2 :sizes 8)
       ()
    (boolean-get 1)))
  
(defun set-access-control (display enabled-p)
  (declare (type display display)
	   (type generalized-boolean enabled-p))
  (with-buffer-request (display +x-changeaccesscontrol+)
    ((data boolean) enabled-p))
  enabled-p)

(defsetf access-control set-access-control)

(defun close-down-mode (display)
  ;; setf'able
  ;; Cached locally in display object.
  (declare (type display display))
  (declare (clx-values (member :destroy :retain-permanent :retain-temporary nil)))
  (display-close-down-mode display))

(defun set-close-down-mode (display mode)
  ;; Cached locally in display object.
  (declare (type display display)
	   (type (member :destroy :retain-permanent :retain-temporary) mode))
  (setf (display-close-down-mode display) mode)
  (with-buffer-request (display +x-changeclosedownmode+ :sizes (32))
    ((data (member :destroy :retain-permanent :retain-temporary)) mode))
  mode)

(defsetf close-down-mode set-close-down-mode)

(defun kill-client (display resource-id)
  (declare (type display display)
	   (type resource-id resource-id))
  (with-buffer-request (display +x-killclient+)
    (resource-id resource-id)))

(defun kill-temporary-clients (display)
  (declare (type display display))
  (with-buffer-request (display +x-killclient+)
    (resource-id 0)))

(defun no-operation (display)
  (declare (type display display))
  (with-buffer-request (display +x-nooperation+)))

 Syntax : Common - lisp ; Package : XLIB ; Base : 10 ; Lowercase : Yes -*-

				  P.O. BOX 2909


 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.

 express or implied warranty.

 Display is obtained from parent.  Only non-nil attributes are passed on in
 the request: the function makes no assumptions about what the actual protocol
 defaults are.  Width and height are the inside size, excluding border.
 required
required
required
Make the request
type specifier
 Parent is NIL for root window
 Although atom-ids are not visible in the normal user interface, atom-ids might
 appear in window properties and other user data, so conversion hooks are needed.
 For binary compatibility with older code
 Start and end affect sub-sequence extracted from data.
a sequence type
 (make-sequence result-type 0) ;; Property not found.
 Positive rotates left, negative rotates right (opposite of actual protocol request).
 sequence of xatom
 a sequence type
 lookup the atoms in the sequence
 Additional arguments depend on event-key, and are as specified further below
 with declare-event, except that both resource-ids and resource objects are
 accepted in the event components.  The display argument is only required if the
 window is :pointer-window or :input-focus.
 Ensure keyword atom-id's are cached
 Make the sendevent request
 The body is not surrounded by a with-display.
 a type specifier
 Returns NIL when not on the same screen
 None
 None
 None
 None
 required
 required
 required
 Sequence of integers
 If stringables are specified for colors, it is unspecified whether all
 sequence of integer
 a type specifier
 required
 required
 required
 Required
 Required
 required
 Drawable can be a display for compatibility.
 If present
  The base volume should
 be considered to be the "desired" volume in the normal case; that is, a
 than using a simple sum, the percent argument is instead used as the
 percentage of the remaining range to alter the base volume by.  That is,
 the actual volume is:
	 if percent>=0:    base - [(base * percent) / 100] + percent
 It is assumed that an eventual audio extension to X will provide more complete control.
 Sequence of card
 Can signal device-busy.
 Sequence of card8
 Acceleration is rationalized if necessary.
 Should we float this?
 A string must be acceptable as a host, but otherwise the possible types for
 host are not constrained, and will likely be very system dependent.
 This implementation uses a list whose car is the family keyword
 (:internet :DECnet :Chaos) and cdr is a list of network address bytes.
 A string must be acceptable as a host, but otherwise the possible types for
 host are not constrained, and will likely be very system dependent.
 This implementation uses a list whose car is the family keyword
 (:internet :DECnet :Chaos) and cdr is a list of network address bytes.
 The type of host objects returned is not constrained, except that the hosts must
 be acceptable to add-access-host and remove-access-host.
 This implementation uses a list whose car is the family keyword
 (:internet :DECnet :Chaos) and cdr is a list of network address bytes.
 True when access-control is ENABLED
 setf'able
 Cached locally in display object.
 Cached locally in display object.

			  TEXAS INSTRUMENTS INCORPORATED
			        AUSTIN , TEXAS 78769
  Copyright ( C ) 1987 Texas Instruments Incorporated .
  Texas Instruments Incorporated provides this software " as is " without
#+cmu
(ext:file-comment
  "$Header: /cvsroot/clocc/clocc/src/gui/clx/requests.lisp,v 1.5 2003/02/28 20:23:13 pvaneynd Exp $")

(in-package :xlib)

(defun create-window (&key
		      window
		      (parent (required-arg parent))
		      (x (required-arg x))
		      (y (required-arg y))
		      (width (required-arg width))
		      (height (required-arg height))
		      (depth 0) (border-width 0)
		      (class :copy) (visual :copy)
		      background border
		      bit-gravity gravity
		      backing-store backing-planes backing-pixel save-under
		      event-mask do-not-propagate-mask override-redirect
		      colormap cursor)
  (declare (type (or null window) window)
	   (type card16 depth border-width)
	   (type (member :copy :input-output :input-only) class)
	   (type (or (member :copy) visual-info resource-id) visual)
	   (type (or null (member :none :parent-relative) pixel pixmap) background)
	   (type (or null (member :copy) pixel pixmap) border)
	   (type (or null bit-gravity) bit-gravity)
	   (type (or null win-gravity) gravity)
	   (type (or null (member :not-useful :when-mapped :always)) backing-store)
	   (type (or null pixel) backing-planes backing-pixel)
	   (type (or null event-mask) event-mask)
	   (type (or null device-event-mask) do-not-propagate-mask)
	   (type (or null (member :on :off)) save-under override-redirect)
	   (type (or null (member :copy) colormap) colormap)
	   (type (or null (member :none) cursor) cursor))
  (declare (clx-values window))
  (let* ((display (window-display parent))
	 (window (or window (make-window :display display)))
	 (wid (allocate-resource-id display window 'window))
	 back-pixmap back-pixel
	 border-pixmap border-pixel)
    (declare (type display display)
	     (type window window)
	     (type resource-id wid)
	     (type (or null resource-id) back-pixmap border-pixmap)
	     (type (or null pixel) back-pixel border-pixel))
    (setf (window-id window) wid)
    (case background
      ((nil) nil)
      (:none (setq back-pixmap 0))
      (:parent-relative (setq back-pixmap 1))
      (otherwise
       (if (type? background 'pixmap)
	   (setq back-pixmap (pixmap-id background))
	 (if (integerp background)
	     (setq back-pixel background)
	   (x-type-error background
			 '(or null (member :none :parent-relative) integer pixmap))))))
    (case border
      ((nil) nil)
      (:copy (setq border-pixmap 0))
      (otherwise
       (if (type? border 'pixmap)
	   (setq border-pixmap (pixmap-id border))
	 (if (integerp border)
	     (setq border-pixel border)
	   (x-type-error border '(or null (member :copy) integer pixmap))))))
    (when event-mask
      (setq event-mask (encode-event-mask event-mask)))
    (when do-not-propagate-mask
      (setq do-not-propagate-mask (encode-device-event-mask do-not-propagate-mask)))

    (with-buffer-request (display +x-createwindow+)
      (data depth)
      (resource-id wid)
      (window parent)
      (int16 x y)
      (card16 width height border-width)
      ((member16 :copy :input-output :input-only) class)
      (resource-id (cond ((eq visual :copy)
			  0)
			 ((typep visual 'resource-id)
			  visual)
			 (t
			  (visual-info-id visual))))
      (mask (card32 back-pixmap back-pixel border-pixmap border-pixel)
	    ((member-vector *bit-gravity-vector*) bit-gravity)
	    ((member-vector *win-gravity-vector*) gravity)
	    ((member :not-useful :when-mapped :always) backing-store)
	    (card32  backing-planes backing-pixel)
	    ((member :off :on) override-redirect save-under)
	    (card32 event-mask do-not-propagate-mask)
	    ((or (member :copy) colormap) colormap)
	    ((or (member :none) cursor) cursor)))
    window))

(defun destroy-window (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-destroywindow+)
    (window window)))

(defun destroy-subwindows (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-destroysubwindows+)
    (window window)))

(defun add-to-save-set (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-changesaveset+)
    (data 0)
    (window window)))

(defun remove-from-save-set (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-changesaveset+)
    (data 1)
    (window window)))

(defun reparent-window (window parent x y)
  (declare (type window window parent)
	   (type int16 x y))
  (with-buffer-request ((window-display window) +x-reparentwindow+)
    (window window parent)
    (int16 x y)))

(defun map-window (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-mapwindow+)
    (window window)))

(defun map-subwindows (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-mapsubwindows+)
    (window window)))

(defun unmap-window (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-unmapwindow+)
    (window window)))

(defun unmap-subwindows (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-unmapsubwindows+)
    (window window)))

(defun circulate-window-up (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-circulatewindow+)
    (data 0)
    (window window)))

(defun circulate-window-down (window)
  (declare (type window window))
  (with-buffer-request ((window-display window) +x-circulatewindow+)
    (data 1)
    (window window)))

(defun query-tree (window &key (result-type 'list))
  (declare (type window window)
  (declare (clx-values (clx-sequence window) parent root))
  (let ((display (window-display window)))
    (multiple-value-bind (root parent sequence)
	(with-buffer-request-and-reply (display +x-querytree+ nil :sizes (8 16 32))
	     ((window window))
	  (values
	    (window-get 8)
	    (resource-id-get 12)
	    (sequence-get :length (card16-get 16) :result-type result-type
			  :index +replysize+)))
      (setq parent (and (plusp parent) (lookup-window display parent)))
  Convert ID 's to window 's
	(setf (elt sequence i) (lookup-window display (elt sequence i))))
      (values sequence parent root))))


(defun intern-atom (display name)
  (declare (type display display)
	   (type xatom name))
  (declare (clx-values resource-id))
  (let ((name (if (or (null name) (keywordp name))
		  name
		(kintern (string name)))))
    (declare (type symbol name))
    (or (atom-id name display)
	(let ((string (symbol-name name)))
	  (declare (type string string))
	  (multiple-value-bind (id)
	      (with-buffer-request-and-reply (display +x-internatom+ 12 :sizes 32)
		   ((data 0)
		    (card16 (length string))
		    (pad16 nil)
		    (string string))
		(values
		  (resource-id-get 8)))
	    (declare (type resource-id id))
	    (setf (atom-id name display) id)
	    id)))))

(defun find-atom (display name)
  Same as INTERN - ATOM , but with the ONLY - IF - EXISTS flag True
  (declare (type display display)
	   (type xatom name))
  (declare (clx-values (or null resource-id)))
  (let ((name (if (or (null name) (keywordp name))
		  name
		(kintern (string name)))))
    (declare (type symbol name))
    (or (atom-id name display)
	(let ((string (symbol-name name)))
	  (declare (type string string))
	  (multiple-value-bind (id)
	      (with-buffer-request-and-reply (display +x-internatom+ 12 :sizes 32)
		   ((data 1)
		    (card16 (length string))
		    (pad16 nil)
		    (string string))
		(values
		  (or-get 8 null resource-id)))
	    (declare (type (or null resource-id) id))
	    (when id 
	      (setf (atom-id name display) id))
	    id)))))

(defun atom-name (display atom-id)
  (declare (type display display)
	   (type resource-id atom-id))
  (declare (clx-values keyword))
  (if (zerop atom-id)
      nil
  (or (id-atom atom-id display)
      (let ((keyword
	      (kintern
		  (with-buffer-request-and-reply
		       (display +x-getatomname+ nil :sizes (16))
		     ((resource-id atom-id))
		  (values
		    (string-get (card16-get 8) +replysize+))))))
	(declare (type keyword keyword))
	(setf (atom-id keyword display) atom-id)
	  keyword))))

(defun lookup-xatom (display atom-id)
  (declare (type display display)
	   (type resource-id atom-id))
  (atom-name display atom-id))

(defun change-property (window property data type format
		       &key (mode :replace) (start 0) end transform)
  Transform is applied to each extracted element .
  (declare (type window window)
	   (type xatom property type)
	   (type (member 8 16 32) format)
	   (type sequence data)
	   (type (member :replace :prepend :append) mode)
	   (type array-index start)
	   (type (or null array-index) end)
	   (type (or null (function (t) integer)) transform))
  (unless end (setq end (length data)))
  (let* ((display (window-display window))
	 (length (index- end start))
	 (property-id (intern-atom display property))
	 (type-id (intern-atom display type)))
    (declare (type display display)
	     (type array-index length)
	     (type resource-id property-id type-id))
    (with-buffer-request (display +x-changeproperty+)
      ((data (member :replace :prepend :append)) mode)
      (window window)
      (resource-id property-id type-id)
      (card8 format)
      (card32 length)
      (progn
	(ecase format
	  (8  (sequence-put 24 data :format card8
			    :start start :end end :transform transform))
	  (16 (sequence-put 24 data :format card16
			    :start start :end end :transform transform))
	  (32 (sequence-put 24 data :format card32
			    :start start :end end :transform transform)))))))

(defun delete-property (window property)
  (declare (type window window)
	   (type xatom property))
  (let* ((display (window-display window))
	 (property-id (intern-atom display property)))
    (declare (type display display)
	     (type resource-id property-id))
    (with-buffer-request (display +x-deleteproperty+)
      (window window)
      (resource-id property-id))))

(defun get-property (window property
		     &key type (start 0) end delete-p (result-type 'list) transform)
  Transform is applied to each integer retrieved .
  (declare (type window window)
	   (type xatom property)
	   (type (or null xatom) type)
	   (type array-index start)
	   (type (or null array-index) end)
	   (type generalized-boolean delete-p)
	   (type (or null (function (integer) t)) transform))
  (declare (clx-values data (or null type) format bytes-after))
  (let* ((display (window-display window))
	 (property-id (intern-atom display property))
	 (type-id (and type (intern-atom display type))))
    (declare (type display display)
	     (type resource-id property-id)
	     (type (or null resource-id) type-id))
    (multiple-value-bind (reply-format reply-type bytes-after data)
	(with-buffer-request-and-reply (display +x-getproperty+ nil :sizes (8 32))
	     (((data boolean) delete-p)
	      (window window)
	      (resource-id property-id)
	      ((or null resource-id) type-id)
	      (card32 start)
	      (card32 (index- (or end 64000) start)))
	  (let ((reply-format (card8-get 1))
		(reply-type (card32-get 8))
		(bytes-after (card32-get 12))
		(nitems (card32-get 16)))
	    (values
	      reply-format
	      reply-type
	      bytes-after
	      (and (plusp nitems)
		   (ecase reply-format
		     (8  (sequence-get :result-type result-type :format card8
				       :length nitems :transform transform
				       :index +replysize+))
		     (16 (sequence-get :result-type result-type :format card16
				       :length nitems :transform transform
				       :index +replysize+))
		     (32 (sequence-get :result-type result-type :format card32
				       :length nitems :transform transform
				       :index +replysize+)))))))
      (values data
	      (and (plusp reply-type) (atom-name display reply-type))
	      reply-format
	      bytes-after))))

(defun rotate-properties (window properties &optional (delta 1))
  (declare (type window window)
	   (type int16 delta))
  (let* ((display (window-display window))
	 (length (length properties))
	 (sequence (make-array length)))
    (declare (type display display)
	     (type array-index length))
    (with-vector (sequence vector)
  Atoms must be interned before the RotateProperties request
  is started to allow InternAtom requests to be made .
      (dotimes (i length)
	(setf (aref sequence i) (intern-atom display (elt properties i))))
      (with-buffer-request (display +x-rotateproperties+)
	(window window)
	(card16 length)
	(int16 (- delta))
	((sequence :end length) sequence))))
  nil)

(defun list-properties (window &key (result-type 'list))
  (declare (type window window)
  (declare (clx-values (clx-sequence keyword)))
  (let ((display (window-display window)))
    (multiple-value-bind (seq)
	(with-buffer-request-and-reply (display +x-listproperties+ nil :sizes 16)
	     ((window window))
	  (values
	    (sequence-get :result-type result-type :length (card16-get 8)
			  :index +replysize+)))
      (if (listp seq)
	  (do ((elt seq (cdr elt)))
	      ((endp elt) seq)
	    (setf (car elt) (atom-name display (car elt))))
	(dotimes (i (length seq) seq)
	  (setf (aref seq i) (atom-name display (aref seq i))))))))

(defun selection-owner (display selection)
  (declare (type display display)
	   (type xatom selection))
  (declare (clx-values (or null window)))
  (let ((selection-id (intern-atom display selection)))
    (declare (type resource-id selection-id))
    (multiple-value-bind (window)
	(with-buffer-request-and-reply (display +x-getselectionowner+ 12 :sizes 32)
	     ((resource-id selection-id))
	  (values
	    (resource-id-or-nil-get 8)))
      (and window (lookup-window display window)))))

(defun set-selection-owner (display selection owner &optional time)
  (declare (type display display)
	   (type xatom selection)
	   (type (or null window) owner)
	   (type timestamp time))
  (let ((selection-id (intern-atom display selection)))
    (declare (type resource-id selection-id))
    (with-buffer-request (display +x-setselectionowner+)
      ((or null window) owner)
      (resource-id selection-id)
      ((or null card32) time))
    owner))

(defsetf selection-owner (display selection &optional time) (owner)
  A bit strange , but retains setf form .
  `(set-selection-owner ,display ,selection ,owner ,time))

(defun convert-selection (selection type requestor &optional property time)
  (declare (type xatom selection type)
	   (type window requestor)
	   (type (or null xatom) property)
	   (type timestamp time))
  (let* ((display (window-display requestor))
	 (selection-id (intern-atom display selection))
	 (type-id (intern-atom display type))
	 (property-id (and property (intern-atom display property))))
    (declare (type display display)
	     (type resource-id selection-id type-id)
	     (type (or null resource-id) property-id))
    (with-buffer-request (display +x-convertselection+)
      (window requestor)
      (resource-id selection-id type-id)
      ((or null resource-id) property-id)
      ((or null card32) time))))

(defun send-event (window event-key event-mask &rest args
		   &key propagate-p display &allow-other-keys)
  (declare (type (or window (member :pointer-window :input-focus)) window)
	   (type event-key event-key)
	   (type (or null event-mask) event-mask)
	   (type generalized-boolean propagate-p)
	   (type (or null display) display)
	   (dynamic-extent args))
  (unless event-mask (setq event-mask 0))
  (unless display (setq display (window-display window)))
  (let ((internal-event-code (get-event-code event-key))
	(external-event-code (get-external-event-code display event-key)))
    (declare (type card8 internal-event-code external-event-code))
    (dolist (arg (cdr (assoc event-key '((:property-notify :atom)
					 (:selection-clear :selection)
					 (:selection-request :selection :target :property)
					 (:selection-notify :selection :target :property)
					 (:client-message :type))
			     :test #'eq)))
      (let ((keyword (getf args arg)))
	(intern-atom display keyword)))
    (with-buffer-request (display +x-sendevent+)
      ((data boolean) propagate-p)
  3 word request + 8 words for event = 11
      ((or (member :pointer-window :input-focus) window) window)
      (card32 (encode-event-mask event-mask))
      (card8 external-event-code)
      (progn
	(apply (svref *event-send-vector* internal-event-code) display args)
	(setf (buffer-boffset display) (index+ buffer-boffset 44))))))

(defun grab-pointer (window event-mask
		     &key owner-p sync-pointer-p sync-keyboard-p confine-to cursor time)
  (declare (type window window)
	   (type pointer-event-mask event-mask)
	   (type generalized-boolean owner-p sync-pointer-p sync-keyboard-p)
	   (type (or null window) confine-to)
	   (type (or null cursor) cursor)
	   (type timestamp time))
  (declare (clx-values grab-status))
  (let ((display (window-display window)))
    (with-buffer-request-and-reply (display +x-grabpointer+ nil :sizes 8)
	 (((data boolean) owner-p)
	  (window window)
	  (card16 (encode-pointer-event-mask event-mask))
	  (boolean (not sync-pointer-p) (not sync-keyboard-p))
	  ((or null window) confine-to)
	  ((or null cursor) cursor)
	  ((or null card32) time))
      (values
	(member8-get 1 :success :already-grabbed :invalid-time :not-viewable :frozen)))))

(defun ungrab-pointer (display &key time)
  (declare (type timestamp time))
  (with-buffer-request (display +x-ungrabpointer+)
    ((or null card32) time)))

(defun grab-button (window button event-mask
		    &key (modifiers :any)
			 owner-p sync-pointer-p sync-keyboard-p confine-to cursor)
  (declare (type window window)
	   (type (or (member :any) card8) button)
	   (type modifier-mask modifiers)
	   (type pointer-event-mask event-mask)
	   (type generalized-boolean owner-p sync-pointer-p sync-keyboard-p)
	   (type (or null window) confine-to)
	   (type (or null cursor) cursor))
  (with-buffer-request ((window-display window) +x-grabbutton+)
    ((data boolean) owner-p)
    (window window)
    (card16 (encode-pointer-event-mask event-mask))
    (boolean (not sync-pointer-p) (not sync-keyboard-p))
    ((or null window) confine-to)
    ((or null cursor) cursor)
    (card8 (if (eq button :any) 0 button))
    (pad8 1)
    (card16 (encode-modifier-mask modifiers))))

(defun ungrab-button (window button &key (modifiers :any))
  (declare (type window window)
	   (type (or (member :any) card8) button)
	   (type modifier-mask modifiers))
  (with-buffer-request ((window-display window) +x-ungrabbutton+)
    (data (if (eq button :any) 0 button))
    (window window)
    (card16 (encode-modifier-mask modifiers))))

(defun change-active-pointer-grab (display event-mask &optional cursor time)
  (declare (type display display)
	   (type pointer-event-mask event-mask)
	   (type (or null cursor) cursor)
	   (type timestamp time))
  (with-buffer-request (display +x-changeactivepointergrab+)
    ((or null cursor) cursor)
    ((or null card32) time)
    (card16 (encode-pointer-event-mask event-mask))))

(defun grab-keyboard (window &key owner-p sync-pointer-p sync-keyboard-p time)
  (declare (type window window)
	   (type generalized-boolean owner-p sync-pointer-p sync-keyboard-p)
	   (type timestamp time))
  (declare (clx-values grab-status))
  (let ((display (window-display window)))
    (with-buffer-request-and-reply (display +x-grabkeyboard+ nil :sizes 8)
	 (((data boolean) owner-p)
	  (window window)
	  ((or null card32) time)
	  (boolean (not sync-pointer-p) (not sync-keyboard-p)))
      (values
	(member8-get 1 :success :already-grabbed :invalid-time :not-viewable :frozen)))))

(defun ungrab-keyboard (display &key time)
  (declare (type display display)
	   (type timestamp time))
  (with-buffer-request (display +x-ungrabkeyboard+)
    ((or null card32) time)))

(defun grab-key (window key &key (modifiers 0) owner-p sync-pointer-p sync-keyboard-p)
  (declare (type window window)
	   (type generalized-boolean owner-p sync-pointer-p sync-keyboard-p)
	   (type (or (member :any) card8) key)
	   (type modifier-mask modifiers))
  (with-buffer-request ((window-display window) +x-grabkey+)
    ((data boolean) owner-p)
    (window window)
    (card16 (encode-modifier-mask modifiers))
    (card8 (if (eq key :any) 0 key))
    (boolean (not sync-pointer-p) (not sync-keyboard-p))))

(defun ungrab-key (window key &key (modifiers 0))
  (declare (type window window)
	   (type (or (member :any) card8) key)
	   (type modifier-mask modifiers))
  (with-buffer-request ((window-display window) +x-ungrabkey+)
    (data (if (eq key :any) 0 key))
    (window window)
    (card16 (encode-modifier-mask modifiers))))

(defun allow-events (display mode &optional time)
  (declare (type display display)
	   (type (member :async-pointer :sync-pointer :replay-pointer
			 :async-keyboard :sync-keyboard :replay-keyboard
			 :async-both :sync-both)
		 mode)
	   (type timestamp time))
  (with-buffer-request (display +x-allowevents+)
    ((data (member :async-pointer :sync-pointer :replay-pointer
		   :async-keyboard :sync-keyboard :replay-keyboard
		   :async-both :sync-both))
     mode)
    ((or null card32) time)))

(defun grab-server (display)
  (declare (type display display))
  (with-buffer-request (display +x-grabserver+)))

(defun ungrab-server (display)
  (with-buffer-request (display +x-ungrabserver+)))

(defmacro with-server-grabbed ((display) &body body)
  (let ((disp (if (symbolp display) display (gensym))))
    `(let ((,disp ,display))
       (declare (type display ,disp))
       (unwind-protect
	   (progn
	     (grab-server ,disp)
	     ,@body)
	 (ungrab-server ,disp)))))

(defun query-pointer (window)
  (declare (type window window))
  (declare (clx-values x y same-screen-p child mask root-x root-y root))
  (let ((display (window-display window)))
    (with-buffer-request-and-reply (display +x-querypointer+ 26 :sizes (8 16 32))
	 ((window window))
      (values
	(int16-get 20)
	(int16-get 22)
	(boolean-get 1)
	(or-get 12 null window)
	(card16-get 24)
	(int16-get 16)
	(int16-get 18)
	(window-get 8)))))

(defun pointer-position (window)
  (declare (type window window))
  (declare (clx-values x y same-screen-p))
  (let ((display (window-display window)))
    (with-buffer-request-and-reply (display +x-querypointer+ 24 :sizes (8 16))
	 ((window window))
      (values
	(int16-get 20)
	(int16-get 22)
	(boolean-get 1)))))

(defun global-pointer-position (display)
  (declare (type display display))
  (declare (clx-values root-x root-y root))
  (with-buffer-request-and-reply (display +x-querypointer+ 20 :sizes (16 32))
       ((window (screen-root (first (display-roots display)))))
    (values
      (int16-get 16)
      (int16-get 18)
      (window-get 8))))

(defun motion-events (window &key start stop (result-type 'list))
  (declare (type window window)
	   (type timestamp start stop)
  (declare (clx-values (repeat-seq (integer x) (integer y) (timestamp time))))
  (let ((display (window-display window)))
    (with-buffer-request-and-reply (display +x-getmotionevents+ nil :sizes 32)
	 ((window window)
	  ((or null card32) start stop))
      (values
	(sequence-get :result-type result-type :length (index* (card32-get 8) 3)
		      :index +replysize+)))))

(defun translate-coordinates (src src-x src-y dst)
  (declare (type window src)
	   (type int16 src-x src-y)
	   (type window dst))
  (declare (clx-values dst-x dst-y child))
  (let ((display (window-display src)))
    (with-buffer-request-and-reply (display +x-translatecoords+ 16 :sizes (8 16 32))
	 ((window src dst)
	  (int16 src-x src-y))
      (and (boolean-get 1)
	   (values
	     (int16-get 12)
	     (int16-get 14)
	     (or-get 8 null window))))))

(defun warp-pointer (dst dst-x dst-y)
  (declare (type window dst)
	   (type int16 dst-x dst-y))
  (with-buffer-request ((window-display dst) +x-warppointer+)
    (window dst)
    (int16 0 0)
    (card16 0 0)
    (int16 dst-x dst-y)))

(defun warp-pointer-relative (display x-off y-off)
  (declare (type display display)
	   (type int16 x-off y-off))
  (with-buffer-request (display +x-warppointer+)
    (int16 0 0)
    (card16 0 0)
    (int16 x-off y-off)))

(defun warp-pointer-if-inside (dst dst-x dst-y src src-x src-y
			       &optional src-width src-height)
  Passing in a zero src - width or src - height is a no - op .
  A null src - width or src - height translates into a zero value in the protocol request .
  (declare (type window dst src)
	   (type int16 dst-x dst-y src-x src-y)
	   (type (or null card16) src-width src-height))
  (unless (or (eql src-width 0) (eql src-height 0))
    (with-buffer-request ((window-display dst) +x-warppointer+)
      (window src dst)
      (int16 src-x src-y)
      (card16 (or src-width 0) (or src-height 0))
      (int16 dst-x dst-y))))

(defun warp-pointer-relative-if-inside (x-off y-off src src-x src-y
					&optional src-width src-height)
  Passing in a zero src - width or src - height is a no - op .
  A null src - width or src - height translates into a zero value in the protocol request .
  (declare (type window src)
	   (type int16 x-off y-off src-x src-y)
	   (type (or null card16) src-width src-height))
  (unless (or (eql src-width 0) (eql src-height 0))
    (with-buffer-request ((window-display src) +x-warppointer+)
      (window src)
      (int16 src-x src-y)
      (card16 (or src-width 0) (or src-height 0))
      (int16 x-off y-off))))

(defun set-input-focus (display focus revert-to &optional time)
  (declare (type display display)
	   (type (or (member :none :pointer-root) window) focus)
	   (type (member :none :pointer-root :parent) revert-to)
	   (type timestamp time))
  (with-buffer-request (display +x-setinputfocus+)
    ((data (member :none :pointer-root :parent)) revert-to)
    ((or window (member :none :pointer-root)) focus)
    ((or null card32) time)))

(defun input-focus (display)
  (declare (type display display))
  (declare (clx-values focus revert-to))
  (with-buffer-request-and-reply (display +x-getinputfocus+ 16 :sizes (8 32))
       ()
    (values
      (or-get 8 window (member :none :pointer-root))
      (member8-get 1 :none :pointer-root :parent))))

(defun query-keymap (display &optional bit-vector)
  (declare (type display display)
	   (type (or null (bit-vector 256)) bit-vector))
  (declare (clx-values (bit-vector 256)))
  (with-buffer-request-and-reply (display +x-querykeymap+ 40 :sizes 8)
       ()
    (values
      (bit-vector256-get 8 8 bit-vector))))

(defun create-pixmap (&key
		      pixmap
		      (width (required-arg width))
		      (height (required-arg height))
		      (depth (required-arg depth))
		      (drawable (required-arg drawable)))
  (declare (type (or null pixmap) pixmap)
  (declare (clx-values pixmap))
  (let* ((display (drawable-display drawable))
	 (pixmap (or pixmap (make-pixmap :display display)))
	 (pid (allocate-resource-id display pixmap 'pixmap)))
    (setf (pixmap-id pixmap) pid)
    (with-buffer-request (display +x-createpixmap+)
      (data depth)
      (resource-id pid)
      (drawable drawable)
      (card16 width height))
    pixmap))

(defun free-pixmap (pixmap)
  (declare (type pixmap pixmap))
  (let ((display (pixmap-display pixmap)))
    (with-buffer-request (display +x-freepixmap+)
      (pixmap pixmap))
    (deallocate-resource-id display (pixmap-id pixmap) 'pixmap)))

(defun clear-area (window &key (x 0) (y 0) width height exposures-p)
  Passing in a zero width or height is a no - op .
  A null width or height translates into a zero value in the protocol request .
  (declare (type window window)
	   (type int16 x y)
	   (type (or null card16) width height)
	   (type generalized-boolean exposures-p))
  (unless (or (eql width 0) (eql height 0))
    (with-buffer-request ((window-display window) +x-cleartobackground+)
      ((data boolean) exposures-p)
      (window window)
      (int16 x y)
      (card16 (or width 0) (or height 0)))))

(defun copy-area (src gcontext src-x src-y width height dst dst-x dst-y)
  (declare (type drawable src dst)
	   (type gcontext gcontext)
	   (type int16 src-x src-y dst-x dst-y)
	   (type card16 width height))
  (with-buffer-request ((drawable-display src) +x-copyarea+ :gc-force gcontext)
    (drawable src dst)
    (gcontext gcontext)
    (int16 src-x src-y dst-x dst-y)
    (card16 width height)))

(defun copy-plane (src gcontext plane src-x src-y width height dst dst-x dst-y)
  (declare (type drawable src dst)
	   (type gcontext gcontext)
	   (type pixel plane)
	   (type int16 src-x src-y dst-x dst-y)
	   (type card16 width height))
  (with-buffer-request ((drawable-display src) +x-copyplane+ :gc-force gcontext)
    (drawable src dst)
    (gcontext gcontext)
    (int16 src-x src-y dst-x dst-y)
    (card16 width height)
    (card32 plane)))

(defun create-colormap (visual-info window &optional alloc-p)
  (declare (type (or visual-info resource-id) visual-info)
	   (type window window)
	   (type generalized-boolean alloc-p))
  (declare (clx-values colormap))
  (let ((display (window-display window)))
    (when (typep visual-info 'resource-id)
      (setf visual-info (visual-info display visual-info)))
    (let* ((colormap (make-colormap :display display :visual-info visual-info))
	   (id (allocate-resource-id display colormap 'colormap)))
      (setf (colormap-id colormap) id)
      (with-buffer-request (display +x-createcolormap+)
	((data boolean) alloc-p)
	(card29 id)
	(window window)
	(card29 (visual-info-id visual-info)))
      colormap)))

(defun free-colormap (colormap)
  (declare (type colormap colormap))
  (let ((display (colormap-display colormap)))
    (with-buffer-request (display +x-freecolormap+)
      (colormap colormap))
    (deallocate-resource-id display (colormap-id colormap) 'colormap)))

(defun copy-colormap-and-free (colormap)
  (declare (type colormap colormap))
  (declare (clx-values colormap))
  (let* ((display (colormap-display colormap))
	 (new-colormap (make-colormap :display display
				      :visual-info (colormap-visual-info colormap)))
	 (id (allocate-resource-id display new-colormap 'colormap)))
    (setf (colormap-id new-colormap) id)
    (with-buffer-request (display +x-copycolormapandfree+)
      (resource-id id)
      (colormap colormap))
    new-colormap))

(defun install-colormap (colormap)
  (declare (type colormap colormap))
  (with-buffer-request ((colormap-display colormap) +x-installcolormap+)
    (colormap colormap)))

(defun uninstall-colormap (colormap)
  (declare (type colormap colormap))
  (with-buffer-request ((colormap-display colormap) +x-uninstallcolormap+)
    (colormap colormap)))

(defun installed-colormaps (window &key (result-type 'list))
  (declare (type window window)
  CL type
  (declare (clx-values (clx-sequence colormap)))
  (let ((display (window-display window)))
    (flet ((get-colormap (id)
	     (lookup-colormap display id)))
      (with-buffer-request-and-reply (display +x-listinstalledcolormaps+ nil :sizes 16)
	   ((window window))
	(values
	  (sequence-get :result-type result-type :length (card16-get 8)
			:transform #'get-colormap :index +replysize+))))))

(defun alloc-color (colormap color)
  (declare (type colormap colormap)
	   (type (or stringable color) color))
  (declare (clx-values pixel screen-color exact-color))
  (let ((display (colormap-display colormap)))
    (etypecase color
      (color
	(with-buffer-request-and-reply (display +x-alloccolor+ 20 :sizes (16 32))
	     ((colormap colormap)
	      (rgb-val (color-red color)
		       (color-green color)
		       (color-blue color))
	      (pad16 nil))
	  (values
	    (card32-get 16)
	    (make-color :red (rgb-val-get 8)
			:green (rgb-val-get 10)
			:blue (rgb-val-get 12))
	    color)))
      (stringable
	(let* ((string (string color))
	       (length (length string)))
	  (with-buffer-request-and-reply (display +x-allocnamedcolor+ 24 :sizes (16 32))
	       ((colormap colormap)
		(card16 length)
		(pad16 nil)
		(string string))
	    (values
	      (card32-get 8)
	      (make-color :red (rgb-val-get 18)
			  :green (rgb-val-get 20)
			  :blue (rgb-val-get 22))
	      (make-color :red (rgb-val-get 12)
			  :green (rgb-val-get 14)
			  :blue (rgb-val-get 16)))))))))

(defun alloc-color-cells (colormap colors &key (planes 0) contiguous-p (result-type 'list))
  (declare (type colormap colormap)
	   (type card16 colors planes)
	   (type generalized-boolean contiguous-p)
  CL type
  (declare (clx-values (clx-sequence pixel) (clx-sequence mask)))
  (let ((display (colormap-display colormap)))
    (with-buffer-request-and-reply (display +x-alloccolorcells+ nil :sizes 16)
	 (((data boolean) contiguous-p)
	  (colormap colormap)
	  (card16 colors planes))
      (let ((pixel-length (card16-get 8))
	    (mask-length (card16-get 10)))
	(values
	  (sequence-get :result-type result-type :length pixel-length :index +replysize+)
	  (sequence-get :result-type result-type :length mask-length
			:index (index+ +replysize+ (index* pixel-length 4))))))))

(defun alloc-color-planes (colormap colors
			   &key (reds 0) (greens 0) (blues 0)
			   contiguous-p (result-type 'list))
  (declare (type colormap colormap)
	   (type card16 colors reds greens blues)
	   (type generalized-boolean contiguous-p)
  CL type
  (declare (clx-values (clx-sequence pixel) red-mask green-mask blue-mask))
  (let ((display (colormap-display colormap)))
    (with-buffer-request-and-reply (display +x-alloccolorplanes+ nil :sizes (16 32))
	 (((data boolean) contiguous-p)
	  (colormap colormap)
	  (card16 colors reds greens blues))
      (let ((red-mask (card32-get 12))
	    (green-mask (card32-get 16))
	    (blue-mask (card32-get 20)))
	(values
	  (sequence-get :result-type result-type :length (card16-get 8) :index +replysize+)
	  red-mask green-mask blue-mask)))))

(defun free-colors (colormap pixels &optional (plane-mask 0))
  (declare (type colormap colormap)
	   (type pixel plane-mask))
  (with-buffer-request ((colormap-display colormap) +x-freecolors+)
    (colormap colormap)
    (card32 plane-mask)
    (sequence pixels)))

(defun store-color (colormap pixel spec &key (red-p t) (green-p t) (blue-p t))
  (declare (type colormap colormap)
	   (type pixel pixel)
	   (type (or stringable color) spec)
	   (type generalized-boolean red-p green-p blue-p))
  (let ((display (colormap-display colormap))
	(flags 0))
    (declare (type display display)
	     (type card8 flags))
    (when red-p (setq flags 1))
    (when green-p (incf flags 2))
    (when blue-p (incf flags 4))
    (etypecase spec
      (color
	(with-buffer-request (display +x-storecolors+)
	  (colormap colormap)
	  (card32 pixel)
	  (rgb-val (color-red spec)
		   (color-green spec)
		   (color-blue spec))
	  (card8 flags)
	  (pad8 nil)))
      (stringable
	(let* ((string (string spec))
	       (length (length string)))
	  (with-buffer-request (display +x-storenamedcolor+)
	    ((data card8) flags)
	    (colormap colormap)
	    (card32 pixel)
	    (card16 length)
	    (pad16 nil)
	    (string string)))))))

(defun store-colors (colormap specs &key (red-p t) (green-p t) (blue-p t))
  stringables are first resolved and then a single StoreColors protocol request is
  issued , or whether multiple StoreColors protocol requests are issued .
  (declare (type colormap colormap)
	   (type sequence specs)
	   (type generalized-boolean red-p green-p blue-p))
  (etypecase specs
    (list
      (do ((spec specs (cddr spec)))
	  ((endp spec))
	(store-color colormap (car spec) (cadr spec) :red-p red-p :green-p green-p :blue-p blue-p)))
    (vector
      (do ((i 0 (+ i 2))
	   (len (length specs)))
	  ((>= i len))
	(store-color colormap (aref specs i) (aref specs (1+ i)) :red-p red-p :green-p green-p :blue-p blue-p)))))

(defun query-colors (colormap pixels &key (result-type 'list))
  (declare (type colormap colormap)
  (declare (clx-values (clx-sequence color)))
  (let ((display (colormap-display colormap)))
    (with-buffer-request-and-reply (display +x-querycolors+ nil :sizes (8 16))
	 ((colormap colormap)
	  (sequence pixels))
      (let ((sequence (make-sequence result-type (card16-get 8))))
	(advance-buffer-offset +replysize+)
	(dotimes (i (length sequence) sequence)
	  (setf (elt sequence i)
		(make-color :red (rgb-val-get 0)
			    :green (rgb-val-get 2)
			    :blue (rgb-val-get 4)))
	  (advance-buffer-offset 8))))))

(defun lookup-color (colormap name)
  (declare (type colormap colormap)
	   (type stringable name))
  (declare (clx-values screen-color true-color))
  (let* ((display (colormap-display colormap))
	 (string (string name))
	 (length (length string)))
    (with-buffer-request-and-reply (display +x-lookupcolor+ 20 :sizes 16)
	 ((colormap colormap)
	  (card16 length)
	  (pad16 nil)
	  (string string))
      (values
	(make-color :red (rgb-val-get 14)
		    :green (rgb-val-get 16)
		    :blue (rgb-val-get 18))
	(make-color :red (rgb-val-get 8)
		    :green (rgb-val-get 10)
		    :blue (rgb-val-get 12))))))

(defun create-cursor (&key
		      (source (required-arg source))
		      mask
		      (x (required-arg x))
		      (y (required-arg y))
		      (foreground (required-arg foreground))
		      (background (required-arg background)))
	   (type (or null pixmap) mask)
  (declare (clx-values cursor))
  (let* ((display (pixmap-display source))
	 (cursor (make-cursor :display display))
	 (cid (allocate-resource-id display cursor 'cursor)))
    (setf (cursor-id cursor) cid)
    (with-buffer-request (display +x-createcursor+)
      (resource-id cid)
      (pixmap source)
      ((or null pixmap) mask)
      (rgb-val (color-red foreground)
	       (color-green foreground)
	       (color-blue foreground))
      (rgb-val (color-red background)
	       (color-green background)
	       (color-blue background))
      (card16 x y))
    cursor))

(defun create-glyph-cursor (&key
			    (source-font (required-arg source-font))
			    (source-char (required-arg source-char))
			    mask-font
			    mask-char
			    (foreground (required-arg foreground))
			    (background (required-arg background)))
	   (type (or null font) mask-font)
	   (type (or null card16) mask-char)
  (declare (clx-values cursor))
  (let* ((display (font-display source-font))
	 (cursor (make-cursor :display display))
	 (cid (allocate-resource-id display cursor 'cursor))
	 (source-font-id (font-id source-font))
	 (mask-font-id (if mask-font (font-id mask-font) 0)))
    (setf (cursor-id cursor) cid)
    (unless mask-char (setq mask-char 0))
    (with-buffer-request (display +x-createglyphcursor+)
      (resource-id cid source-font-id mask-font-id)
      (card16 source-char)
      (card16 mask-char)
      (rgb-val (color-red foreground)
	       (color-green foreground)
	       (color-blue foreground))
      (rgb-val (color-red background)
	       (color-green background)
	       (color-blue background)))
    cursor))

(defun free-cursor (cursor)
  (declare (type cursor cursor))
  (let ((display (cursor-display cursor)))
    (with-buffer-request (display +x-freecursor+)
      (cursor cursor))
    (deallocate-resource-id display (cursor-id cursor) 'cursor)))

(defun recolor-cursor (cursor foreground background)
  (declare (type cursor cursor)
	   (type color foreground background))
  (with-buffer-request ((cursor-display cursor) +x-recolorcursor+)
    (cursor cursor)
    (rgb-val (color-red foreground)
	     (color-green foreground)
	     (color-blue foreground))
    (rgb-val (color-red background)
	     (color-green background)
	     (color-blue background))
    ))

(defun query-best-cursor (width height drawable)
  (declare (type card16 width height)
	   (type (or drawable display) drawable))	
  (declare (clx-values width height))
  (multiple-value-bind (display drawable)
      (if (type? drawable 'drawable)
	  (values (drawable-display drawable) drawable)
	(values drawable (screen-root (display-default-screen drawable))))
    (with-buffer-request-and-reply (display +x-querybestsize+ 12 :sizes 16)
	 ((data 0)
	  (window drawable)
	  (card16 width height))
      (values
	(card16-get 8)
	(card16-get 10)))))

(defun query-best-tile (width height drawable)
  (declare (type card16 width height)
	   (type drawable drawable))
  (declare (clx-values width height))
  (let ((display (drawable-display drawable)))
    (with-buffer-request-and-reply (display +x-querybestsize+ 12 :sizes 16)
	 ((data 1)
	  (drawable drawable)
	  (card16 width height))
      (values
	(card16-get 8)
	(card16-get 10)))))

(defun query-best-stipple (width height drawable)
  (declare (type card16 width height)
	   (type drawable drawable))
  (declare (clx-values width height))
  (let ((display (drawable-display drawable)))
    (with-buffer-request-and-reply (display +x-querybestsize+ 12 :sizes 16)
	 ((data 2)
	  (drawable drawable)
	  (card16 width height))
      (values
	(card16-get 8)
	(card16-get 10)))))

(defun query-extension (display name)
  (declare (type display display)
	   (type stringable name))
  (declare (clx-values major-opcode first-event first-error))
  (let ((string (string name)))
    (with-buffer-request-and-reply (display +x-queryextension+ 12 :sizes 8)
	 ((card16 (length string))
	  (pad16 nil)
	  (string string))
	   (values
	     (card8-get 9)
	     (card8-get 10)
	     (card8-get 11))))))

(defun list-extensions (display &key (result-type 'list))
  (declare (type display display)
  CL type
  (declare (clx-values (clx-sequence string)))
  (with-buffer-request-and-reply (display +x-listextensions+ size :sizes 8)
       ()
    (values
      (read-sequence-string
	buffer-bbuf (index- size +replysize+) (card8-get 1) result-type +replysize+))))

(defun change-keyboard-control (display &key key-click-percent
				bell-percent bell-pitch bell-duration
				led led-mode key auto-repeat-mode)
  (declare (type display display)
	   (type (or null (member :default) int16) key-click-percent
						   bell-percent bell-pitch bell-duration)
	   (type (or null card8) led key)
	   (type (or null (member :on :off)) led-mode)
	   (type (or null (member :on :off :default)) auto-repeat-mode))
  (when (eq key-click-percent :default) (setq key-click-percent -1))
  (when (eq bell-percent :default) (setq bell-percent -1))
  (when (eq bell-pitch :default) (setq bell-pitch -1))
  (when (eq bell-duration :default) (setq bell-duration -1))
  (with-buffer-request (display +x-changekeyboardcontrol+ :sizes (32))
    (mask
      (integer key-click-percent bell-percent bell-pitch bell-duration)
      (card32 led)
      ((member :off :on) led-mode)
      (card32 key)
      ((member :off :on :default) auto-repeat-mode))))

(defun keyboard-control (display)
  (declare (type display display))
  (declare (clx-values key-click-percent bell-percent bell-pitch bell-duration
		  led-mask global-auto-repeat auto-repeats))
  (with-buffer-request-and-reply (display +x-getkeyboardcontrol+ 32 :sizes (8 16 32))
       ()
    (values
      (card8-get 12)
      (card8-get 13)
      (card16-get 14)
      (card16-get 16)
      (card32-get 8)
      (member8-get 1 :off :on)
      (bit-vector256-get 32))))

  typical application should call XBell with 0 as the percent .   Rather
	  if percent<0 :      base + [ ( base * percent ) / 100 ]

(defun bell (display &optional (percent-from-normal 0))
  (declare (type display display)
	   (type int8 percent-from-normal))
  (with-buffer-request (display +x-bell+)
    (data (int8->card8 percent-from-normal))))

(defun pointer-mapping (display &key (result-type 'list))
  (declare (type display display)
  CL type
  (with-buffer-request-and-reply (display +x-getpointermapping+ nil :sizes 8)
       ()
    (values
      (sequence-get :length (card8-get 1) :result-type result-type :format card8
		    :index +replysize+))))

(defun set-pointer-mapping (display map)
  (declare (type display display)
  (when (with-buffer-request-and-reply (display +x-setpointermapping+ 2 :sizes 8)
	     ((data (length map))
	      ((sequence :format card8) map))
	  (values
	    (boolean-get 1)))
    (x-error 'device-busy :display display))
  map)

(defsetf pointer-mapping set-pointer-mapping)

(defun change-pointer-control (display &key acceleration threshold)
  (declare (type display display)
	   (type (or null (member :default) number) acceleration)
	   (type (or null (member :default) integer) threshold))
  (flet ((rationalize16 (number)
  Rationalize NUMBER into the ratio of two signed 16 bit numbers
	   (declare (type number number))
	   (declare (clx-values numerator denominator))
	   (do* ((rational (rationalize number))
		 (numerator (numerator rational) (ash numerator -1))
		 (denominator (denominator rational) (ash denominator -1)))
		((or (= numerator 1)
		     (and (< (abs numerator) #x8000)
			  (< denominator #x8000)))
		 (values
		   numerator (min denominator #x7fff))))))
    (declare (inline rationalize16))
    (let ((acceleration-p 1)
	  (threshold-p 1)
	  (numerator 0)
	  (denominator 1))
      (declare (type card8 acceleration-p threshold-p)
	       (type int16 numerator denominator))
      (cond ((eq acceleration :default) (setq numerator -1))
	    (acceleration (multiple-value-setq (numerator denominator)
			    (rationalize16 acceleration)))
	    (t (setq acceleration-p 0)))
      (cond ((eq threshold :default) (setq threshold -1))
	    ((null threshold) (setq threshold -1
				    threshold-p 0)))
      (with-buffer-request (display +x-changepointercontrol+)
	(int16 numerator denominator threshold)
	(card8 acceleration-p threshold-p)))))

(defun pointer-control (display)
  (declare (type display display))
  (declare (clx-values acceleration threshold))
  (with-buffer-request-and-reply (display +x-getpointercontrol+ 16 :sizes 16)
       ()
    (values
      (card16-get 12))))

(defun set-screen-saver (display timeout interval blanking exposures)
  Timeout and interval are in seconds , will be rounded to minutes .
  (declare (type display display)
	   (type (or (member :default) int16) timeout interval)
	   (type (member :on :off :default :yes :no) blanking exposures))
  (case blanking (:yes (setq blanking :on)) (:no (setq blanking :off)))
  (case exposures (:yes (setq exposures :on)) (:no (setq exposures :off)))
  (when (eq timeout :default) (setq timeout -1))
  (when (eq interval :default) (setq interval -1))
  (with-buffer-request (display +x-setscreensaver+)
    (int16 timeout interval)
    ((member8 :on :off :default) blanking exposures)))

(defun screen-saver (display)
  Returns timeout and interval in seconds .
  (declare (type display display))
  (declare (clx-values timeout interval blanking exposures))
  (with-buffer-request-and-reply (display +x-getscreensaver+ 14 :sizes (8 16))
       ()
    (values
      (card16-get 8)
      (card16-get 10)
      (member8-get 12 :on :off :default)
      (member8-get 13 :on :off :default))))

(defun activate-screen-saver (display)
  (declare (type display display))
  (with-buffer-request (display +x-forcescreensaver+)
    (data 1)))

(defun reset-screen-saver (display)
  (declare (type display display))
  (with-buffer-request (display +x-forcescreensaver+)
    (data 0)))

(defun add-access-host (display host &optional (family :internet))
  (declare (type display display)
	   (type (or stringable list) host)
	   (type (or null (member :internet :decnet :chaos) card8) family))
  (change-access-host display host family nil))

(defun remove-access-host (display host &optional (family :internet))
  (declare (type display display)
	   (type (or stringable list) host)
	   (type (or null (member :internet :decnet :chaos) card8) family))
  (change-access-host display host family t))

(defun change-access-host (display host family remove-p)
  (declare (type display display)
	   (type (or stringable list) host)
	   (type (or null (member :internet :decnet :chaos) card8) family))
  (unless (consp host)
    (setq host (host-address host family)))
  (let ((family (car host))
	(address (cdr host)))
    (with-buffer-request (display +x-changehosts+)
      ((data boolean) remove-p)
      (card8 (encode-type (or null (member :internet :decnet :chaos) card32) family))
      (card16 (length address))
      ((sequence :format card8) address))))

(defun access-hosts (display &optional (result-type 'list))
  (declare (type display display)
  CL type
  (declare (clx-values (clx-sequence host) enabled-p))
  (with-buffer-request-and-reply (display +x-listhosts+ nil :sizes (8 16))
       ()
    (let* ((enabled-p (boolean-get 1))
	   (nhosts (card16-get 8))
	   (sequence (make-sequence result-type nhosts)))
      (advance-buffer-offset +replysize+)
      (dotimes (i nhosts)
	(let ((family (card8-get 0))
	      (len (card16-get 2)))
	  (setf (elt sequence i)
		(cons (if (< family 3)
			  (svref '#(:internet :decnet :chaos) family)
			family)
		      (sequence-get :length len :format card8 :result-type 'list
				    :index (+ buffer-boffset 4))))
	  (advance-buffer-offset (+ 4 (* 4 (ceiling len 4))))))
      (values
	sequence
	enabled-p))))

(defun access-control (display)
  (declare (type display display))
  (with-buffer-request-and-reply (display +x-listhosts+ 2 :sizes 8)
       ()
    (boolean-get 1)))
  
(defun set-access-control (display enabled-p)
  (declare (type display display)
	   (type generalized-boolean enabled-p))
  (with-buffer-request (display +x-changeaccesscontrol+)
    ((data boolean) enabled-p))
  enabled-p)

(defsetf access-control set-access-control)

(defun close-down-mode (display)
  (declare (type display display))
  (declare (clx-values (member :destroy :retain-permanent :retain-temporary nil)))
  (display-close-down-mode display))

(defun set-close-down-mode (display mode)
  (declare (type display display)
	   (type (member :destroy :retain-permanent :retain-temporary) mode))
  (setf (display-close-down-mode display) mode)
  (with-buffer-request (display +x-changeclosedownmode+ :sizes (32))
    ((data (member :destroy :retain-permanent :retain-temporary)) mode))
  mode)

(defsetf close-down-mode set-close-down-mode)

(defun kill-client (display resource-id)
  (declare (type display display)
	   (type resource-id resource-id))
  (with-buffer-request (display +x-killclient+)
    (resource-id resource-id)))

(defun kill-temporary-clients (display)
  (declare (type display display))
  (with-buffer-request (display +x-killclient+)
    (resource-id 0)))

(defun no-operation (display)
  (declare (type display display))
  (with-buffer-request (display +x-nooperation+)))
