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shells.lisp
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shells.lisp
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;;; -*- Mode:Lisp; Package:CLUEI; Base:10; Lowercase:T; Syntax:Common-Lisp -*-
;;; Texas Instruments Incorporated
;;; P.O. BOX 149149
;;; Austin, Texas 78714-9149
;;;
;;; Copyright (C)1989,1990 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 :cluei)
;;; Shell
(defcontact shell (composite)
((state :type (member :withdrawn :iconic :mapped)
:reader contact-state) ; setf defined below
(owner :type composite
:reader shell-owner))
(:resources
(state :type (member :withdrawn :iconic :mapped)
:initform (shell-default-state)))
(:documentation
"Base class for all shell contacts."))
(defmethod initialize-instance :around ((shell shell) &rest initargs)
(declare (ignore initargs))
;; Must bind new shell in order to evaluate initform for state slot.
(let ((*new-shell* shell))
(declare (special *new-shell*))
(call-next-method)))
(defmethod initialize-instance :after ((shell shell) &rest initargs)
(declare (ignore initargs))
(with-slots (background owner) shell
;; Use initial background, if not :parent-relative.
;; Else look for background inherited from owner.
(setf background
(do*
((shell shell ancestor)
(ancestor owner (if (typep ancestor 'shell)
(shell-owner ancestor)
(contact-parent ancestor)))
bg)
((not (and ancestor (eq (setf bg (contact-background shell))
:parent-relative)))
bg)))))
;;; Override Shell
(defcontact override-shell (shell)
()
(:resources
(override-redirect :initform :on))
(:documentation
"Base class for shells which override the window manager."))
(defmethod (setf contact-state) :around (new-state (shell override-shell))
;; :iconic is equivalent to :withdrawn for override-shell
(call-next-method
(if (eq :iconic new-state) :withdrawn new-state)
shell))
;;; Batching window manager property changes
(defmacro wm-properties-changed (shell &optional default)
"Return list of changed window manager properties for the SHELL."
`(getf (xlib:window-plist ,shell) 'wm-properties-changed ,default))
(defmacro wm-changing-properties-p (shell)
"Return true if currently batching changes to window manager properties of the SHELL."
`(not (eq :undefined (wm-properties-changed ,shell :undefined))))
(defsetf wm-changing-properties-p (shell) (value)
"Turn off/on batching of changes to window manager properties of the SHELL."
`(if ,value
(setf (wm-properties-changed ,shell) nil)
(remf (xlib:window-plist ,shell) 'wm-properties-changed)))
(defmacro with-wm-properties ((shell) &body body)
"Batch all changes to window manager properties of the SHELL into one request
after the BODY."
`(progn
(setf (wm-changing-properties-p ,shell) t)
,@body
(when (wm-properties-changed ,shell)
(apply #'wm-batch-change-properties ,shell (wm-properties-changed ,shell)))
(setf (wm-changing-properties-p ,shell) nil)))
(defmacro define-wm-batch-change-properties ()
"Generate WM-BATCH-CHANGE-PROPERTIES function definition."
`(defun wm-batch-change-properties (shell &rest properties)
"Change the properties which control window manager interaction."
,@(let (code)
(dolist (p
'(
;; class, transient-for properties not included because
;; they should only be changed during initialization
client-machine
colormap-windows
command
hints
icon-name
name
normal-hints
protocols
)
code)
(let ((accessor (intern (format nil "WM-CHANGE-~a" (symbol-name p)) 'cluei)))
(push
`(when (member ',p properties :test #'eq)
(,accessor shell))
code))))))
(define-wm-batch-change-properties)
;;; Window Manager Shell
(defcontact wm-shell (shell)
((hints :type (or null wm-hints)
:initform nil
:initarg :wm-hints
:accessor shell-hints)
(normal-hints :type (or null wm-size-hints)
:initform nil
:initarg :wm-normal-hints
:accessor shell-normal-hints)
(protocols-used :type (or null list)
:initform nil
:initarg :wm-protocols-used
:accessor wm-protocols-used)
(title :type (or null string)
:initform nil
:initarg :wm-title
:accessor wm-title)
(reparented-p :type boolean
:initform nil))
(:resources
(event-mask :initform (xlib:make-event-mask :structure-notify))
(wm-base-height :type (or null xlib:card16))
(wm-base-width :type (or null xlib:card16))
(wm-delta-height :type (or null xlib:card16))
(wm-delta-width :type (or null xlib:card16))
(wm-gravity :type (or null (member :north-west :north :north-east
:west :center :east
:south-west :south :south-east)))
(wm-initial-state :type (or null (member :normal :iconic)))
(wm-max-aspect :type (or null number))
(wm-max-height :type (or null xlib:card16))
(wm-max-width :type (or null xlib:card16))
(wm-min-aspect :type (or null number))
(wm-min-height :type (or null xlib:card16))
(wm-min-width :type (or null xlib:card16))
wm-title
(wm-user-specified-position-p :type boolean)
(wm-user-specified-size-p :type boolean))
(:documentation
"Base class for shells which interact with the window manager."))
;;; wm_protocols accessors
(defmethod wm-change-protocols ((shell wm-shell))
"send a request to change the wm_protocols property for the shell."
(when (realized-p shell)
(with-slots (protocols-used) shell
(let ((display (contact-display shell)))
;; crock! work around bug in clx r4.2 --- make sure all intern-atom's occur
;; outside other request functions.
(intern-atom display :wm_protocols)
(if protocols-used
(change-property
shell :wm_protocols
(mapcar #'(lambda (atom) (intern-atom display atom)) protocols-used)
:atom
32)
(delete-property shell :wm_protocols))))))
(defmethod (setf wm-protocols-used) :after (new-protocols (shell wm-shell))
(declare (ignore new-protocols))
(if (wm-changing-properties-p shell)
(pushnew 'protocols (wm-properties-changed shell))
(wm-change-protocols shell)))
;;;----------------------------------------------------------------------------+
;;; |
;;; wm_name accessors |
;;; |
;;;----------------------------------------------------------------------------+
(defmethod wm-change-name ((shell wm-shell))
"send a request to change the wm_name property for the shell."
(when (realized-p shell)
(with-slots (title name) shell
(setf (wm-name shell) (or title name)))))
(defmethod (setf wm-title) :after (new-title (shell wm-shell))
(declare (ignore new-title))
(if (wm-changing-properties-p shell)
(pushnew 'name (wm-properties-changed shell))
(wm-change-name shell)))
;;;----------------------------------------------------------------------------+
;;; |
;;; wm_class accessors |
;;; |
;;;----------------------------------------------------------------------------+
;; this should only be called during initialization
(defmethod wm-change-class ((shell wm-shell))
"send a request to change the wm_class property for the shell."
(when (realized-p shell)
(let ((d (contact-display shell)))
(set-wm-class shell
(display-name d)
(display-class d)))))
;;;----------------------------------------------------------------------------+
;;; |
;;; wm_normal_hints accessors |
;;; |
;;;----------------------------------------------------------------------------+
(defmethod (setf shell-normal-hints) :after (new-normal-hints (shell wm-shell))
(declare (ignore new-normal-hints))
(wm-change-normal-hints shell))
(defmethod wm-change-normal-hints ((shell wm-shell))
"send a request to change the wm_normal_hints property for the shell."
(when (realized-p shell)
(with-slots (normal-hints) shell
(if normal-hints
(setf (wm-normal-hints shell) normal-hints)
(delete-property shell :wm_normal_hints)))))
(defun wm-update-normal-hints (shell)
"record an update to the wm_normal_hints property for the shell."
(if (wm-changing-properties-p shell)
(pushnew 'normal-hints (wm-properties-changed shell))
(wm-change-normal-hints shell)))
(defmethod wm-user-specified-size-p ((shell wm-shell))
(with-slots (normal-hints) shell
(when normal-hints
(wm-size-hints-user-specified-size-p normal-hints))))
(defmethod (setf wm-user-specified-size-p) (value (shell wm-shell))
(with-slots (normal-hints) shell
(unless normal-hints
(setf normal-hints (make-wm-size-hints)))
(setf (wm-size-hints-user-specified-size-p normal-hints) value))
(wm-update-normal-hints shell)
value)
(defmethod wm-user-specified-position-p ((shell wm-shell))
(with-slots (normal-hints) shell
(when normal-hints
(wm-size-hints-user-specified-position-p normal-hints))))
(defmethod (setf wm-user-specified-position-p) (value (shell wm-shell))
(with-slots (normal-hints) shell
(unless normal-hints
(setf normal-hints (make-wm-size-hints)))
(setf (wm-size-hints-user-specified-position-p normal-hints) value))
(wm-update-normal-hints shell)
value)
(defmethod wm-min-width ((shell wm-shell))
(with-slots (normal-hints) shell
(when normal-hints
(wm-size-hints-min-width normal-hints))))
(defmethod (setf wm-min-width) (value (shell wm-shell))
(with-slots (normal-hints) shell
(unless normal-hints
(setf normal-hints (make-wm-size-hints)))
(setf (wm-size-hints-min-width normal-hints) value))
(wm-update-normal-hints shell)
value)
(defmethod wm-min-height ((shell wm-shell))
(with-slots (normal-hints) shell
(when normal-hints
(wm-size-hints-min-height normal-hints))))
(defmethod (setf wm-min-height) (value (shell wm-shell))
(with-slots (normal-hints) shell
(unless normal-hints
(setf normal-hints (make-wm-size-hints)))
(setf (wm-size-hints-min-height normal-hints) value))
(wm-update-normal-hints shell)
value)
(defmethod wm-min-aspect ((shell wm-shell))
(with-slots (normal-hints) shell
(when normal-hints
(wm-size-hints-min-aspect normal-hints))))
(defmethod (setf wm-min-aspect) (value (shell wm-shell))
(with-slots (normal-hints) shell
(unless normal-hints
(setf normal-hints (make-wm-size-hints)))
(setf (wm-size-hints-min-aspect normal-hints) value))
(wm-update-normal-hints shell)
value)
(defmethod wm-max-width ((shell wm-shell))
(with-slots (normal-hints) shell
(when normal-hints
(wm-size-hints-max-width normal-hints))))
(defmethod (setf wm-max-width) (value (shell wm-shell))
(with-slots (normal-hints) shell
(unless normal-hints
(setf normal-hints (make-wm-size-hints)))
(setf (wm-size-hints-max-width normal-hints) value))
(wm-update-normal-hints shell)
value)
(defmethod wm-max-height ((shell wm-shell))
(with-slots (normal-hints) shell
(when normal-hints
(wm-size-hints-max-height normal-hints))))
(defmethod (setf wm-max-height) (value (shell wm-shell))
(with-slots (normal-hints) shell
(unless normal-hints
(setf normal-hints (make-wm-size-hints)))
(setf (wm-size-hints-max-height normal-hints) value))
(wm-update-normal-hints shell)
value)
(defmethod wm-max-aspect ((shell wm-shell))
(with-slots (normal-hints) shell
(when normal-hints
(wm-size-hints-max-aspect normal-hints))))
(defmethod (setf wm-max-aspect) (value (shell wm-shell))
(with-slots (normal-hints) shell
(unless normal-hints
(setf normal-hints (make-wm-size-hints)))
(setf (wm-size-hints-max-aspect normal-hints) value))
(wm-update-normal-hints shell)
value)
(defmethod wm-gravity ((shell wm-shell))
(with-slots (normal-hints) shell
(when normal-hints
(wm-size-hints-win-gravity normal-hints))))
(defmethod (setf wm-gravity) (value (shell wm-shell))
(with-slots (normal-hints) shell
(unless normal-hints
(setf normal-hints (make-wm-size-hints)))
(setf (wm-size-hints-win-gravity normal-hints) value))
(wm-update-normal-hints shell)
value)
(defmethod wm-delta-width ((shell wm-shell))
(with-slots (normal-hints) shell
(when normal-hints
(wm-size-hints-width-inc normal-hints))))
(defmethod (setf wm-delta-width) (value (shell wm-shell))
(with-slots (normal-hints) shell
(unless normal-hints
(setf normal-hints (make-wm-size-hints)))
(setf (wm-size-hints-width-inc normal-hints) value))
(wm-update-normal-hints shell)
value)
(defmethod wm-delta-height ((shell wm-shell))
(with-slots (normal-hints) shell
(when normal-hints
(wm-size-hints-height-inc normal-hints))))
(defmethod (setf wm-delta-height) (value (shell wm-shell))
(with-slots (normal-hints) shell
(unless normal-hints
(setf normal-hints (make-wm-size-hints)))
(setf (wm-size-hints-height-inc normal-hints) value))
(wm-update-normal-hints shell)
value)
(defmethod wm-base-width ((shell wm-shell))
(with-slots (normal-hints) shell
(when normal-hints
(wm-size-hints-base-width normal-hints))))
(defmethod (setf wm-base-width) (value (shell wm-shell))
(with-slots (normal-hints) shell
(unless normal-hints
(setf normal-hints (make-wm-size-hints)))
(setf (wm-size-hints-base-width normal-hints) value))
(wm-update-normal-hints shell)
value)
(defmethod wm-base-height ((shell wm-shell))
(with-slots (normal-hints) shell
(when normal-hints
(wm-size-hints-base-height normal-hints))))
(defmethod (setf wm-base-height) (value (shell wm-shell))
(with-slots (normal-hints) shell
(unless normal-hints
(setf normal-hints (make-wm-size-hints)))
(setf (wm-size-hints-base-height normal-hints) value))
(wm-update-normal-hints shell)
value)
;;;----------------------------------------------------------------------------+
;;; |
;;; wm_hints accessors for wm-shell |
;;; |
;;;----------------------------------------------------------------------------+
(defmethod (setf shell-hints) :after (new-hints (shell wm-shell))
(declare (ignore new-hints))
(wm-change-hints shell))
(defmethod wm-change-hints ((shell wm-shell))
"send a request to change the wm_hints property for the shell."
(when (realized-p shell)
(with-slots (hints) shell
(if hints
(setf (wm-hints shell) hints)
(delete-property shell :wm_hints)))))
(defun wm-update-hints (shell)
"record an update to the wm_hints property for the shell."
(if (wm-changing-properties-p shell)
(pushnew 'hints (wm-properties-changed shell))
(wm-change-hints shell)))
(defmethod wm-group ((shell wm-shell))
(with-slots (hints) shell
(let ((id (when hints (wm-hints-window-group hints))))
(when id
(xlib::lookup-window (contact-display shell) id)))))
(defmethod (setf wm-group) (value (shell wm-shell))
(with-slots (hints) shell
(unless hints
(setf hints (make-wm-hints)))
(setf (wm-hints-window-group hints) (xlib:window-id value)))
(wm-update-hints shell)
value)
(defmethod wm-keyboard-input ((shell wm-shell))
(with-slots (hints) shell
(when hints
(wm-hints-input hints))))
(defmethod (setf wm-keyboard-input) (value (shell wm-shell))
(with-slots (hints) shell
(unless hints
(setf hints (make-wm-hints)))
(setf (wm-hints-input hints) value))
(wm-update-hints shell)
value)
(defmethod wm-initial-state ((shell wm-shell))
(with-slots (hints) shell
(when hints
(wm-hints-initial-state hints))))
(defmethod (setf wm-initial-state) (value (shell wm-shell))
(with-slots (hints) shell
(unless hints
(setf hints (make-wm-hints)))
(setf (wm-hints-initial-state hints) value))
(wm-update-hints shell)
value)
;;;----------------------------------------------------------------------------+
;;; |
;;; initialization |
;;; |
;;;----------------------------------------------------------------------------+
(defmethod initialize-instance :after ((shell wm-shell) &key
wm-base-height wm-base-width wm-delta-height wm-delta-width
wm-initial-state wm-gravity
wm-max-aspect wm-max-height wm-max-width
wm-min-aspect wm-min-height wm-min-width
wm-user-specified-position-p wm-user-specified-size-p
wm-group wm-keyboard-input
&allow-other-keys)
;; initialize hints from initargs
(when wm-base-height (setf (wm-base-height shell) wm-base-height))
(when wm-base-width (setf (wm-base-width shell) wm-base-width))
(when wm-delta-height (setf (wm-delta-height shell) wm-delta-height))
(when wm-delta-width (setf (wm-delta-width shell) wm-delta-width))
(when wm-initial-state (setf (wm-initial-state shell) wm-initial-state))
(when wm-gravity (setf (wm-gravity shell) wm-gravity))
(when wm-max-aspect (setf (wm-max-aspect shell) wm-max-aspect))
(when wm-max-height (setf (wm-max-height shell) wm-max-height))
(when wm-max-width (setf (wm-max-width shell) wm-max-width))
(when wm-min-aspect (setf (wm-min-aspect shell) wm-min-aspect))
(when wm-min-height (setf (wm-min-height shell) wm-min-height))
(when wm-min-width (setf (wm-min-width shell) wm-min-width))
(when wm-user-specified-position-p (setf (wm-user-specified-position-p shell) wm-user-specified-position-p))
(when wm-user-specified-size-p (setf (wm-user-specified-size-p shell) wm-user-specified-size-p))
(when wm-group (setf (wm-group shell) wm-group))
(when wm-keyboard-input (setf (wm-keyboard-input shell) wm-keyboard-input)))
(defmethod realize :after ((shell wm-shell))
;; set initial property values
(wm-change-class shell)
(wm-change-hints shell)
(wm-change-name shell)
(wm-change-normal-hints shell)
(wm-change-protocols shell))
;;; window manager shell: state management
(defmethod (setf contact-state) (new-state (shell wm-shell))
(check-type new-state (member :withdrawn :iconic :mapped))
(with-slots (parent xlib:display state) shell
(unless (eq state new-state)
(let ((old-state state))
(setf state new-state)
(if
(realized-p shell)
;; change state now -- but don't send side-effect requests if inside
;; without-requests wrapper (i.e. eq *contact-notified*) ---
;; that is, if responding to notification of state change from window mgr.
(when
;; was a (un)map request actually sent?
(case new-state
(:mapped (shell-mapped shell)
(unless (eq *contact-notified* shell)
(map-window shell)
t)) ; request sent
(:iconic (if (eq old-state :withdrawn)
(unless (eq *contact-notified* shell)
(unless (eq :iconic (wm-initial-state shell))
(setf (wm-initial-state shell) :iconic))
(map-window shell)
nil) ; no :map-notify coming, so don't wait!
(progn
(unless (eq *contact-notified* shell)
(send-event parent
:client-message
(xlib:make-event-mask :substructure-redirect :substructure-notify)
:window shell
:type :wm_change_state
:format 32
:data '(3) ; crock: this should be an xlib defconstant
))
(shell-unmapped shell)
t))) ; request sent
(:withdrawn (prog1
(unless (eq *contact-notified* shell)
(unmap-window shell)
(send-event parent
:unmap-notify
(xlib:make-event-mask :substructure-redirect :substructure-notify)
:event-window parent
:window shell
:configure-p nil)
t) ; request sent
(shell-unmapped shell))))
;; wait until resulting :(un)map-notify event has been received.
(let ((*ignore-map-notify* t))
(declare (special *ignore-map-notify*))
(with-event-mode (shell '(:map-notify (throw-action :map-notify))
'(:unmap-notify (throw-action :map-notify)))
(catch :map-notify
;; don't update-state to avoid infinite recursion during realization.
(loop (process-next-event xlib:display nil nil))))))
;; not realized, let update-state do the work
(setf (display-update-flag xlib:display) t)))))
new-state)
;;; Window Manager Shell: event handling
(defmethod handle-event :before ((shell wm-shell) (event event))
(with-slots (key parent) event
(case key
(:reparent-notify
(setf (slot-value shell 'reparented-p)
(not (eq parent (contact-parent shell)))))
(:configure-notify
;; update geometry slots to reflect change made interactively by user.
(with-slots (x y width height border-width send-event-p) event
(without-requests shell ; no configure request side-effect
;; use move/resize protocol so that any auxiliary methods will fire.
(resize shell width height border-width)
;; ensure shell coordinates are w.r.t root.
(let ((new-x x) (new-y y))
(when (and (not send-event-p) (slot-value shell 'reparented-p))
(multiple-value-setq (new-x new-y)
(xlib:translate-coordinates shell (- border-width) (- border-width) (contact-root shell))))
(move shell new-x new-y)))))
((:map-notify :unmap-notify)
;; ignore if in response to (setf contact-state)
(unless (boundp '*ignore-map-notify*)
;; update state to reflect change made interactively by user.
(without-requests shell
(setf (contact-state shell) (if (eq key :map-notify) :mapped :iconic))))))))
;;; :client-message translations
(defstruct (wm-message (:type (vector int32)))
"common data fields of all :client-message events from a window/session mgr."
protocol
timestamp)
(defun wm-message-protocol-atom (wm-message)
(atom-name *event-display* (wm-message-protocol wm-message)))
(defevent wm-shell (:wm_take_focus) wm-take-focus)
(defevent wm-shell :focus-in wm-take-focus)
(defmethod wm-take-focus ((shell wm-shell))
(with-event (kind key)
(when (or (not (eq key :focus-in)) (member kind '(:ancestor :nonlinear)))
(with-slots (children) shell
(when children
(wm-take-focus (first children)))))))
(defmethod wm-take-focus ((composite composite))
(with-slots (contact-display children) composite
(when (viewable-p composite)
(or
;; set focus to composite itself?
(when (accept-focus-p composite)
(set-input-focus display composite :parent)
composite)
;; set focus to one of children?
(move-focus composite :set)
(move-focus composite :next)
;; search for descendant to take focus.
(dolist (child children)
(let ((focus (wm-take-focus child)))
(when focus (return focus))))))))
(defmethod wm-take-focus ((contact contact))
(with-slots (contact-display) contact
(when (accept-focus-p contact)
(set-input-focus display contact :parent)
contact)))
;;; transient shells
(defcontact transient-shell (wm-shell)
()
(:documentation
"base class for shells which are never iconified."))
(defmethod realize :after ((shell transient-shell))
;; send a request to change the transient-for property for the shell.
(let ((transient-for (contact-root-shell shell)))
(if (eq transient-for shell)
(warn "can't define transient-for for root shell ~a." shell)
(setf (transient-for shell) transient-for))))
(defun contact-root-shell (contact)
(do ((rso (contact-top-level contact) (contact-top-level (shell-owner rso))))
((eq (shell-owner rso) (contact-root rso)) rso)))
;;; top-level shells
(defcontact top-level-shell (wm-shell)
((colormap-owners :type list
:initform nil
:accessor wm-colormap-owners)
(icon-title :type (or null string)
:initform nil
:initarg :wm-icon-title
:accessor wm-icon-title))
(:resources
(wm-icon :type (or null drawable))
(wm-icon-mask :type (or null pixmap))
wm-icon-title
(wm-icon-x :type (or null xlib:int16))
(wm-icon-y :type (or null xlib:int16)))
(:documentation
"Base class for normal top-level shells."))
;;; wm_colormap_windows accessors
(defmethod (setf wm-colormap-owners) :after (new-colormap-owners (shell top-level-shell))
(declare (ignore new-colormap-owners))
(if (wm-changing-properties-p shell)
(pushnew 'colormap-windows (wm-properties-changed shell))
(wm-change-colormap-windows shell)))
(defmethod wm-change-colormap-windows ((shell top-level-shell))
"send a request to change the colormap-windows property for the shell."
(when (realized-p shell)
(with-slots (colormap-owners) shell
(if colormap-owners
(change-property shell :wm_colormap_windows
colormap-owners
:window
32
:transform #'xlib:window-id)
(delete-property shell :wm_colormap_windows)))))
;;; wm_icon_name accessors
(defmethod (setf wm-icon-title) :after (new-icon-title (shell top-level-shell))
(declare (ignore new-icon-title))
(if (wm-changing-properties-p shell)
(pushnew 'icon-name (wm-properties-changed shell))
(wm-change-icon-name shell)))
(defmethod wm-change-icon-name ((shell top-level-shell))
"send a request to change the wm_icon_name property for the shell."
(when (realized-p shell)
(with-slots (icon-title) shell
(if icon-title
(setf (wm-icon-name shell) icon-title)
(delete-property shell :wm_icon_name)))))
;;; wm_hints accessors for top-level-shell
(defmethod wm-icon ((shell top-level-shell))
(with-slots (hints) shell
(when hints
(or (wm-hints-icon-pixmap hints)
(wm-hints-icon-window hints)))))
(defmethod (setf wm-icon) ((value xlib:pixmap) (shell top-level-shell))
(with-slots (hints) shell
(unless hints
(setf hints (make-wm-hints)))
(setf (wm-hints-icon-pixmap hints) value
(wm-hints-icon-window hints) nil))
(wm-update-hints shell)
value)
(defmethod (setf wm-icon) ((value xlib:window) (shell top-level-shell))
(with-slots (hints) shell
(unless hints
(setf hints (make-wm-hints)))
(setf (wm-hints-icon-window hints) value
(wm-hints-icon-pixmap hints) nil))
(wm-update-hints shell)
value)
(defmethod wm-icon-mask ((shell top-level-shell))
(with-slots (hints) shell
(when hints
(wm-hints-icon-mask hints))))
(defmethod (setf wm-icon-mask) (value (shell top-level-shell))
(with-slots (hints) shell
(unless hints
(setf hints (make-wm-hints)))
(setf (wm-hints-icon-mask hints) value))
(wm-update-hints shell)
value)
(defmethod wm-icon-x ((shell top-level-shell))
(with-slots (hints) shell
(when hints
(wm-hints-icon-x hints))))
(defmethod (setf wm-icon-x) (value (shell top-level-shell))
(with-slots (hints) shell
(unless hints
(setf hints (make-wm-hints)))
(setf (wm-hints-icon-x hints) value))
(wm-update-hints shell)
value)
(defmethod wm-icon-y ((shell top-level-shell))
(with-slots (hints) shell
(when hints
(wm-hints-icon-y hints))))
(defmethod (setf wm-icon-y) (value (shell top-level-shell))
(with-slots (hints) shell
(unless hints
(setf hints (make-wm-hints)))
(setf (wm-hints-icon-y hints) value))
(wm-update-hints shell)
value)
(defmethod initialize-instance :after ((shell top-level-shell) &key
wm-icon wm-icon-mask wm-icon-x wm-icon-y
&allow-other-keys)
;; initialize hints from initargs
(when wm-icon (setf (wm-icon shell) wm-icon))
(when wm-icon-mask (setf (wm-icon-mask shell) wm-icon-mask))
(when wm-icon-x (setf (wm-icon-x shell) wm-icon-x))
(when wm-icon-y (setf (wm-icon-y shell) wm-icon-y)))
(defmethod realize :after ((shell top-level-shell))
;; set initial property values
(wm-change-colormap-windows shell)
(wm-change-icon-name shell))
;;; top-level session shells
(defcontact top-level-session (top-level-shell)
((client-host :type (or null string)
:initform nil
:initarg :sm-client-host
:accessor sm-client-host)
(command :type (or null string)
:initform nil
:initarg :sm-command
:accessor sm-command))
(:resources
sm-command)
(:documentation
"base class for top-level shells that communicate with a session manager."))
(defmethod initialize-instance :after ((shell top-level-session) &rest initargs)
(declare (ignore initargs))
;; define default client host.
(with-slots (client-host) shell
(unless client-host
(setf client-host
(string-capitalize (host-namestring (user-homedir-pathname)))))))
(defmethod realize :after ((shell top-level-session))
;; set initial property values
(wm-change-client-machine shell)
(wm-change-command shell))
;;; wm_client_machine accessors
(defmethod (setf sm-client-host) :after (new-client-host (shell top-level-session))
(declare (ignore new-client-host))
(if (wm-changing-properties-p shell)
(pushnew 'client-machine (wm-properties-changed shell))
(wm-change-client-machine shell)))
(defmethod wm-change-client-machine ((shell top-level-session))
"send a request to change the wm_client_machine property for the shell."
(when (realized-p shell)
(with-slots (client-host) shell
(if client-host
(setf (wm-client-machine shell) client-host)
(delete-property shell :wm_client_machine)))))
;;; wm_command accessors
(defmethod (setf sm-command) :after (new-command (shell top-level-session))
(declare (ignore new-command))
(if (wm-changing-properties-p shell)
(pushnew 'command (wm-properties-changed shell))
(wm-change-command shell)))
(defmethod wm-change-command ((shell top-level-session))
"send a request to change the wm_command property for the shell."
(when (realized-p shell)
(with-slots (command) shell
(if command
(setf (wm-command shell) command)
(delete-property shell :wm_command)))))
;;; shell: state management
(defun shell-default-state ()
;; bound to shell by initialize-instance :around
(declare (special *new-shell*))
;; warning: we assume this function is called during (initialize-instance :after (basic-contact)).
;; therefore, the parent slot still contains the owner and has not yet been reset to the root!
;; is this a root shell?
(if (eq (contact-root *new-shell*) (contact-parent *new-shell*))
;; yes...
:mapped
;; no...
:withdrawn))
(defmethod initial-state-transition ((shell shell))
"return the old-state/new-state for the initial (setf contact-state) after contact
is realized. return nil if (setf contact-state) need not be called, i.e. no
initial state transition is necessary."
(with-slots (state) shell
(unless (eq :withdrawn state)
(values :withdrawn state))))
(defmethod shell-mapped ((shell shell))
(apply-callback shell :map))
(defmethod shell-unmapped ((shell shell))
(apply-callback shell :unmap))
(defmethod shell-mapped :before ((shell shell))
;; place up front when mapped, since the window manager cannot
;; intervene to inform stacking priority.
(setf (window-priority shell) :above))
(defmethod (setf contact-state) (new-state (shell shell))
(check-type new-state (member :withdrawn :mapped))
(with-slots (parent xlib:display state) shell
(unless (eq state new-state)
(setf state new-state)
(if
(realized-p shell)
(case new-state
(:mapped (shell-mapped shell)
(map-window shell))
(:withdrawn (unmap-window shell)
(shell-unmapped shell)))
;; not realized, let update-state do the work
(setf (display-update-flag xlib:display) t))))
new-state)
;;; shell: geometry management
(defmethod add-to-parent ((self shell))
(with-slots (parent owner) self
(let ((root (contact-root self)))
;; initialize shell owner
(setf owner parent)
(with-slots (shells) owner
;; add to owner's shells list unless...
(unless (or
;; ... owner is root (not necessary in this case because
;; root cannot be destroyed, so its shells list is never cleaned up)...
(eq owner root)
;; ... shell already belongs to list (an error we just ignore)
(member self shells :test #'eq))
(setf shells (nconc shells (cons self nil)))))
;; a shell is always a child of its root
(setf parent root)
(add-child root self))))
(defmethod contact-resource-parent ((shell shell))
(slot-value shell 'owner))
(defmethod add-child :before ((shell shell) child &key)
(with-slots (children) shell
(when children
(error "~s already has child ~s; cannot add child ~s."
shell
(first children)
child))))
(defmethod manage-geometry ((parent shell) (child contact) x y width height border-width &key)
(let* ((child-bw (or border-width (contact-border-width child)))
(required-pos (- child-bw)))
(with-slots ((parent-width width) (parent-height height)) parent
(multiple-value-bind (size-approved-p approved-width approved-height)
(if (and (realized-p parent)
(or (setf width (unless (eq width (contact-width child)) width))
(setf height (unless (eq height (contact-height child)) height))))
;; request corresponding change in top-level shell size
;; since shell is top-level, changed size is effected immediately
(values
(change-geometry parent :width width :height height)
parent-width
parent-height)
;; unrealized shell approves and adopts change immediately
(values
t
(setf parent-width (or width (contact-width child)))
(setf parent-height (or height (contact-height child)))))
;; shell child always positioned so that its borders are invisible.
(values
(and size-approved-p
(or (null x) (= x required-pos))
(or (null y) (= y required-pos)))
required-pos
required-pos
approved-width
approved-height
child-bw)))))
(defmethod manage-priority ((parent shell) child priority sibling &key)
(declare (ignore child priority sibling))
;; never approved since shell has only one child
nil)
(defmethod change-layout ((shell shell) &optional newly-managed)
(declare (ignore newly-managed))