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display.l
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1988-09-12
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;;; -*- Mode: LISP; Syntax: Common-lisp; Package: XLIB; Base: 10; Lowercase: Yes -*-
;;; This file contains definitions for the DISPLAY object for Common-Lisp X windows version 11
;;;
;;; 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.
;;;
(in-package 'xlib :use '(lisp))
(export '(
with-display
with-event-queue
open-display
display-force-output
close-display
display-protocol-version
display-vendor
display-roots
display-motion-buffer-size
display-max-request-length
display-error-handler
display-after-function
display-invoke-after-function
display-finish-output))
;;
;; Resource id management
;;
(defun initialize-resource-allocator (display)
;; Find the resource-id-byte (appropriate for LDB & DPB) from the resource-id-mask
(let ((id-mask (display-resource-id-mask display)))
(unless (zerop id-mask) ;; zero mask is an error
(do ((first 0 (index1+ first))
(mask id-mask (the mask32 (ash mask -1))))
((oddp mask)
(setf (display-resource-id-byte display)
(byte (integer-length mask) first)))
(declare (type array-index first)
(type mask32 mask))))))
(defun resourcealloc (display)
;; Allocate a resource-id for in DISPLAY
(declare (type display display))
(declare-values resource-id)
(dpb (incf (display-resource-id-count display))
(display-resource-id-byte display)
(display-resource-id-base display)))
(defmacro allocate-resource-id (display object type)
;; Allocate a resource-id for OBJECT in DISPLAY
(declare (type display display)
(type t object))
(declare-values resource-id)
(if (member (eval type) *clx-cached-types*)
`(let ((id (funcall (display-xid ,display) ,display)))
(save-id ,display id ,object)
id)
`(funcall (display-xid ,display) ,display)))
(defmacro deallocate-resource-id (display id type)
;; Deallocate a resource-id for OBJECT in DISPLAY
(when (member (eval type) *clx-cached-types*)
`(deallocate-resource-id-internal ,display ,id)))
(defun deallocate-resource-id-internal (display id)
(remhash id (display-resource-id-map display)))
(defun lookup-resource-id (display id)
;; Find the object associated with resource ID
(gethash id (display-resource-id-map display)))
(defun save-id (display id object)
;; Register a resource-id from another display.
(declare (type display display)
(type integer id)
(type t object))
(declare-values object)
(setf (gethash id (display-resource-id-map display)) object))
(defun make-xatom (&key display id)
(atom-name-internal display id))
;; Define functions to find the CLX data types given a display and resource-id
;; If the data type is being cached, look there first.
(eval-when (eval compile) ;; I'd rather use macrolet, but Symbolics doesn't like it...
(defmacro generate-lookup-functions (useless-name &body types)
`(within-definition (,useless-name generate-lookup-functions)
,@(mapcar
#'(lambda (type)
`(defun ,(xintern 'lookup- type)
(display id)
(declare (type display display)
(type resource-id id))
(declare-values ,type)
,(if (member type *clx-cached-types*)
`(let ((,type (lookup-resource-id display id)))
(cond ((null ,type) ;; Not found, create and save it.
(setq ,type (,(xintern 'make- type)
:display display :id id))
(save-id display id ,type))
;; Found. Check the type
,(cond ((null *type-check?*)
`(t ,type))
((member type '(window pixmap))
`((type? ,type 'drawable) ,type))
(t `((type? ,type ',type) ,type)))
,@(when *type-check?*
`((t (x-error 'lookup-error
:id id
:display display
:type ',type
:object ,type))))))
;; Not being cached. Create a new one each time.
`(,(xintern 'make- type)
:display display :id id))))
types)))
) ;; End eval-when
(generate-lookup-functions ignore
drawable
window
pixmap
gcontext
cursor
colormap
font
xatom)
(defun atom-id (atom display)
;; Return the ID for an atom in DISPLAY
(declare (type xatom atom)
(type display display))
(declare-values (or null resource-id))
(gethash (if (keywordp atom)
atom
(kintern atom))
(display-atom-cache display)))
(defun set-atom-id (atom display id)
;; Set the ID for an atom in DISPLAY
(declare (type xatom atom)
(type display display)
(type resource-id id))
(declare-values resource-id)
(setf (gethash (if (keywordp atom)
atom
(kintern atom))
(display-atom-cache display))
id))
(defsetf atom-id set-atom-id)
(defun initialize-predefined-atoms (display)
(do ((i 1 (1+ i))
(end (length *predefined-atoms*))
(save-p (member 'xatom *clx-cached-types*)))
((>= i end))
(set-atom-id (aref *predefined-atoms* i) display i)
(when save-p
(save-id display i (aref *predefined-atoms* i)))))
;;
;; Display functions
;;
(defmacro with-display ((display) &body body)
;; This macro is for use in a multi-process environment. It provides exclusive
;; access to the local display object for multiple request generation. It need not
;; provide immediate exclusive access for replies; that is, if another process is
;; waiting for a reply (while not in a with-display), then synchronization need not
;; (but can) occur immediately. Except where noted, all routines effectively
;; contain an implicit with-display where needed, so that correct synchronization
;; is always provided at the interface level on a per-call basis. Nested uses of
;; this macro will work correctly. This macro does not prevent concurrent event
;; processing; see with-event-queue.
`(with-buffer (,display) ,@body))
(defmacro with-event-queue ((display) &body body)
; exclusive access to event queue
(declare (special *within-with-event-queue*))
(if (and (boundp '*within-with-event-queue*) *within-with-event-queue*)
`(progn ,display ,@body) ;; Speedup hack for lexically nested with-event-queue's
`(compiler-let ((*within-with-event-queue* t))
(holding-lock ((display-event-lock ,display) "Event-Lock") ,@body))))
(defmacro with-event-queue-internal ((display) &body body)
; exclusive access to the internal event queues
`(holding-lock ((display-event-queue-lock ,display) "Event-Queue-Lock") ,@body))
(defmacro with-input-lock ((display) &body body)
; exclusive access to the input buffer
`(holding-lock ((display-input-lock ,display) "Input-Lock") ,@body))
(defun open-display (host &rest options &key (display 0) protocol
authorization-name authorization-data &allow-other-keys)
;; Implementation specific routine to setup the buffer for a specific host and display.
;; This must interface with the local network facilities, and will probably do special
;; things to circumvent the nework when displaying on the local host.
;;
;; A string must be acceptable as a host, but otherwise the possible types
;; for host and protocol are not constrained, and will likely be very
;; system dependent. The default protocol is system specific. Authorization,
;; if any, is assumed to come from the environment somehow.
(declare (type integer display))
(declare-values display)
;; PROTOCOL is the network protocol (something like :TCP :DNA or :CHAOS). See OPEN-X-STREAM.
(let* ((stream (open-x-stream host display protocol))
(disp (apply #'make-buffer
#x1000 #x1000 'make-display-internal
:host host
:display display
:output-stream stream
:input-stream stream
#-ti :allow-other-keys #-ti t ; Explorer 4.1 is broken
options))
(ok-p nil))
(unwind-protect
(progn
(display-connect disp :authorization-name authorization-name :authorization-data authorization-data)
(initialize-resource-allocator disp)
(initialize-predefined-atoms disp)
(initialize-extensions disp)
(setq ok-p t))
(unless ok-p (close-display disp))) ;; Ensure network connection gets closed on connect problems
disp))
(defun display-force-output (display)
; Output is normally buffered, this forces any buffered output to the server.
(declare (type display display))
(with-display (display)
(buffer-force-output display)))
(defun close-display (display)
;; Close the host connection in DISPLAY
(declare (type display display))
(close-buffer display))
(defun display-connect (display &key authorization-name authorization-data)
(unless authorization-name (setq authorization-name ""))
(unless authorization-data (setq authorization-data ""))
(writing-buffer-send (display :sizes (8 16))
(card8-put 0
#+clx-little-endian
#x6c ;; Ascii lowercase l - Least Significant byte first
#-clx-little-endian
#x42 ;; Ascii uppercase B - Most Significant Byte First
)
(card16-put 2 *protocol-major-version*)
(card16-put 4 *protocol-minor-version*)
(card16-put 6 (length authorization-name))
(card16-put 8 (length authorization-data))
(write-sequence-char display 12 authorization-name)
(write-sequence-char display
(lround (+ 12 (length authorization-name))) authorization-data))
(buffer-force-output display)
(reading-buffer-reply (display :sizes (8 16 32))
(buffer-input display buffer-bbuf 0 8)
(let ((success (boolean-get 0))
(reason-length (card8-get 1))
(major-version (card16-get 2))
(minor-version (card16-get 4))
(total-length (card16-get 6))
vendor-length
num-roots
num-formats)
(declare (ignore total-length))
(unless success
(x-error 'connection-failure
:major-version major-version
:minor-version minor-version
:host (display-host display)
:display (display-display display)
:reason (string-get reason-length)))
(buffer-input display buffer-bbuf 0 32)
(setf (display-protocol-major-version display) major-version)
(setf (display-protocol-minor-version display) minor-version)
(setf (display-release-number display) (card32-get 0))
(setf (display-resource-id-base display) (card32-get 4))
(setf (display-resource-id-mask display) (card32-get 8))
(setf (display-motion-buffer-size display) (card32-get 12))
(setq vendor-length (card16-get 16))
(setf (display-max-request-length display) (card16-get 18))
(setq num-roots (card8-get 20))
(setq num-formats (card8-get 21))
;; Get the image-info
(setf (display-image-lsb-first-p display) (zerop (card8-get 22)))
(let ((format (display-bitmap-format display)))
(declare (type bitmap-format format))
(setf (bitmap-format-lsb-first-p format) (zerop (card8-get 23)))
(setf (bitmap-format-unit format) (card8-get 24))
(setf (bitmap-format-pad format) (card8-get 25)))
(setf (display-min-keycode display) (card8-get 26))
(setf (display-max-keycode display) (card8-get 27))
;; 4 bytes unused
;; Get the vendor string
(setf (display-vendor-name display) (string-get vendor-length))
;; Initialize the pixmap formats
(dotimes (i num-formats) ;; loop gathering pixmap formats
(buffer-input display buffer-bbuf 0 8)
(push (make-pixmap-format :depth (card8-get 0)
:bits-per-pixel (card8-get 1)
:scanline-pad (card8-get 2))
; 5 unused bytes
(display-pixmap-formats display)))
(setf (display-pixmap-formats display) (nreverse (display-pixmap-formats display)))
;; Initialize the screens
(dotimes (i num-roots)
(buffer-input display buffer-bbuf 0 40)
(let* ((root (make-window :id (card32-get 0) :display display))
(screen
(make-screen
:root root
:default-colormap (make-colormap :id (card32-get 4) :display display)
:white-pixel (card32-get 8)
:black-pixel (card32-get 12)
:event-mask-at-open (card32-get 16)
:width (card16-get 20)
:height (card16-get 22)
:width-in-millimeters (card16-get 24)
:height-in-millimeters (card16-get 26)
:min-installed-maps (card16-get 28)
:max-installed-maps (card16-get 30)
:root-visual (card32-get 32)
:backing-stores (member8-get 36 :never :when-mapped :always)
:save-unders-p (boolean-get 37)
:root-depth (card8-get 38)))
(num-depths (card8-get 39))
(depths nil))
;; Save root window for event reporting
(save-id display (window-id root) root)
;; Create the depth AList for a screen, (depth . visual-infos)
(dotimes (j num-depths)
(buffer-input display buffer-bbuf 0 8)
(let ((depth (card8-get 0))
(num-visuals (card16-get 2))
(visuals nil)) ;; 4 bytes unused
(dotimes (k num-visuals)
(buffer-input display buffer-bbuf 0 24)
(push (make-visual-info
:id (card32-get 0)
:class (member8-get 4 :static-gray :gray-scale :static-color
:pseudo-color :true-color :direct-color)
:bits-per-rgb (card8-get 5)
:colormap-entries (card16-get 6)
:red-mask (card32-get 8)
:green-mask (card32-get 12)
:blue-mask (card32-get 16))
;; 4 bytes unused
visuals))
(push (cons depth (nreverse visuals)) depths)))
(setf (screen-depths screen) (nreverse depths))
(push screen (display-roots display))))
(setf (display-roots display) (nreverse (display-roots display)))
(setf (display-default-screen display) (first (display-roots display)))))
display)
(defun display-protocol-version (display)
(declare (type display display))
(declare-values major minor)
(values (display-protocol-major-version display)
(display-protocol-minor-version display)))
(defun display-vendor (display)
(declare (type display display))
(declare-values name release)
(values (display-vendor-name display)
(display-release-number display)))
#+comment ;; defined by the DISPLAY defstruct
(defsetf display-error-handler (display) (handler)
;; All errors (synchronous and asynchronous) are processed by calling an error
;; handler in the display. If handler is a sequence it is expected to contain
;; handler functions specific to each error; the error code is used to index the
;; sequence, fetching the appropriate handler. Any results returned by the handler
;; are ignored; it is assumed the handler either takes care of the error
;; completely, or else signals. For all core errors, the keyword/value argument
;; pairs are:
;; :display display
;; :error-key error-key
;; :major integer
;; :minor integer
;; :sequence integer
;; :current-sequence integer
;; For :colormap, :cursor, :drawable, :font, :gcontext, :id-choice, :pixmap, and
;; :window errors another pair is:
;; :resource-id integer
;; For :atom errors, another pair is:
;; :atom-id integer
;; For :value errors, another pair is:
;; :value integer
)
;; setf'able
;; If defined, called after every protocol request is generated, even those inside
;; explicit with-display's, but never called from inside the after-function itself.
;; The function is called inside the effective with-display for the associated
;; request. Default value is nil. Can be set, for example, to
;; #'display-force-output or #'display-finish-output.
(defun display-invoke-after-function (display)
; Called after every protocal request is generated
(declare (type display display)
(special *inside-display-after-function*))
(when (and (display-after-function display)
(not (and (boundp '*inside-display-after-function*)
*inside-display-after-function*)))
(let ((*inside-display-after-function* t)) ;; Ensure no recursive calls
(declare (special *inside-display-after-function*))
(funcall (display-after-function display) display))))
(defun display-finish-output (display)
; Forces output, then causes a round-trip to ensure that all possible
; errors and events have been received.
(declare (type display display))
(with-display (display)
(with-buffer-request (display *x-getinputfocus* :no-after))
(wait-for-reply display 16)))
(defparameter
*request-names*
'#("error" "CreateWindow" "ChangeWindowAttributes" "GetWindowAttributes"
"DestroyWindow" "DestroySubwindows" "ChangeSaveSet" "ReparentWindow"
"MapWindow" "MapSubwindows" "UnmapWindow" "UnmapSubwindows"
"ConfigureWindow" "CirculateWindow" "GetGeometry" "QueryTree"
"InternAtom" "GetAtomName" "ChangeProperty" "DeleteProperty"
"GetProperty" "ListProperties" "SetSelectionOwner" "GetSelectionOwner"
"ConvertSelection" "SendEvent" "GrabPointer" "UngrabPointer"
"GrabButton" "UngrabButton" "ChangeActivePointerGrab" "GrabKeyboard"
"UngrabKeyboard" "GrabKey" "UngrabKey" "AllowEvents"
"GrabServer" "UngrabServer" "QueryPointer" "GetMotionEvents"
"TranslateCoords" "WarpPointer" "SetInputFocus" "GetInputFocus"
"QueryKeymap" "OpenFont" "CloseFont" "QueryFont"
"QueryTextExtents" "ListFonts" "ListFontsWithInfo" "SetFontPath"
"GetFontPath" "CreatePixmap" "FreePixmap" "CreateGC"
"ChangeGC" "CopyGC" "SetDashes" "SetClipRectangles"
"FreeGC" "ClearToBackground" "CopyArea" "CopyPlane"
"PolyPoint" "PolyLine" "PolySegment" "PolyRectangle"
"PolyArc" "FillPoly" "PolyFillRectangle" "PolyFillArc"
"PutImage" "GetImage" "PolyText8" "PolyText16"
"ImageText8" "ImageText16" "CreateColormap" "FreeColormap"
"CopyColormapAndFree" "InstallColormap" "UninstallColormap" "ListInstalledColormaps"
"AllocColor" "AllocNamedColor" "AllocColorCells" "AllocColorPlanes"
"FreeColors" "StoreColors" "StoreNamedColor" "QueryColors"
"LookupColor" "CreateCursor" "CreateGlyphCursor" "FreeCursor"
"RecolorCursor" "QueryBestSize" "QueryExtension" "ListExtensions"
"SetKeyboardMapping" "GetKeyboardMapping" "ChangeKeyboardControl" "GetKeyboardControl"
"Bell" "ChangePointerControl" "GetPointerControl" "SetScreenSaver"
"GetScreenSaver" "ChangeHosts" "ListHosts" "ChangeAccessControl"
"ChangeCloseDownMode" "KillClient" "RotateProperties" "ForceScreenSaver"
"SetPointerMapping" "GetPointerMapping" "SetModifierMapping" "GetModifierMapping"))