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Revision 1.21 - (show annotations)
Mon Feb 11 21:46:36 2002 UTC (12 years, 2 months ago) by gilbert
Branch: MAIN
Changes since 1.20: +64 -29 lines
BASIC-PORT class
    Now features an event-process slot as well as a lock.

Basically all methods, which specialized on PORT, now specialize on
BASIC-PORT.

DESTROY-PORT :before ((port basic-port))
    New method, kills the event process.

WITH-PORT-LOCKED, INVOKE-WITH-PORT-LOCKED
    New macro.
1 ;;; -*- Mode: Lisp; Package: CLIM-INTERNALS -*-
2
3 ;;; (c) copyright 1998,1999,2000,2001 by Michael McDonald (mikemac@mikemac.com)
4 ;;; (c) copyright 2000 by
5 ;;; Iban Hatchondo (hatchond@emi.u-bordeaux.fr)
6 ;;; Julien Boninfante (boninfan@emi.u-bordeaux.fr)
7 ;;; Robert Strandh (strandh@labri.u-bordeaux.fr)
8
9 ;;; This library is free software; you can redistribute it and/or
10 ;;; modify it under the terms of the GNU Library General Public
11 ;;; License as published by the Free Software Foundation; either
12 ;;; version 2 of the License, or (at your option) any later version.
13 ;;;
14 ;;; This library is distributed in the hope that it will be useful,
15 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 ;;; Library General Public License for more details.
18 ;;;
19 ;;; You should have received a copy of the GNU Library General Public
20 ;;; License along with this library; if not, write to the
21 ;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;;; Boston, MA 02111-1307 USA.
23
24 (in-package :CLIM-INTERNALS)
25
26 (eval-when (:compile-toplevel :load-toplevel :execute)
27 (defun parse-display-variable (s)
28 "Given a string in standard X11 display format host-name:display-number:screen-number,
29 returns a list in CLIM X11 format (:x11 :host host-name :display-id display-number
30 :screen-id screen-number)."
31 (let* ((colon (position #\: s))
32 (dot (position #\. s :start colon))
33 (host-name (subseq s 0 colon))
34 (display-number (parse-integer s :start (1+ colon) :end dot))
35 (screen-number (if dot (parse-integer s :start (1+ dot)) 0)))
36 (list :x11 :host host-name :display-id display-number :screen-id screen-number)))
37
38 (defun get-environment-variable (string)
39 #+excl (sys:getenv string)
40 #+cmu (cdr (assoc string ext:*environment-list* :test #'string=))
41 #+clisp (sys::getenv (string string))
42 #+sbcl (sb-ext::posix-getenv string)
43 #-(or excl cmu clisp sbcl) (error "GET-ENVIRONMENT-VARIABLE not implemented")))
44
45 (defvar *default-server-path*
46 #+unix (parse-display-variable (get-environment-variable "DISPLAY")))
47
48 (defvar *all-ports* nil)
49
50 (defclass port ()
51 ()
52 (:documentation
53 "The protocol class that corresponds to a port."))
54
55 (defclass basic-port (port)
56 ((server-path :initform nil
57 :initarg :server-path
58 :reader port-server-path)
59 (properties :initform nil
60 :initarg :properties)
61 (grafts :initform nil
62 :accessor port-grafts)
63 (frame-managers :initform nil
64 :reader frame-managers)
65 (sheet->mirror :initform (make-hash-table :test #'eq))
66 (mirror->sheet :initform (make-hash-table :test #'eq))
67 (pixmap->mirror :initform (make-hash-table :test #'eq))
68 (mirror->pixmap :initform (make-hash-table :test #'eq))
69 (keyboard-input-focus :initform nil
70 :initarg :keyboard-input-focus
71 :accessor port-keyboard-input-focus)
72 (event-process
73 :initform nil
74 :initarg :event-process
75 :accessor port-event-process
76 :documentation "In a multiprocessing environment, the particular process
77 reponsible for calling PROCESS-NEXT-EVENT in a loop.")
78
79 (lock
80 :initform (make-recursive-lock "port lock")
81 :accessor port-lock) ))
82
83 (defun find-port (&key (server-path *default-server-path*))
84 (loop for port in *all-ports*
85 if (equal server-path (port-server-path port))
86 do (return port)
87 finally (let ((port-type (get (first server-path) :port-type))
88 port)
89 (if (null port-type)
90 (error "Don't know how to make a port of type ~S" server-path))
91 (setq port (funcall 'make-instance port-type :server-path server-path))
92 (push port *all-ports*)
93 (return port))))
94
95 (defmethod initialize-instance :after ((port basic-port) &rest args)
96 (declare (ignorable args))
97 )
98
99 (defmethod destroy-port :before ((port basic-port))
100 (when *multiprocessing-p*
101 (destroy-process (port-event-process port))
102 (setf (port-event-process port) nil)))
103
104 (defmethod port-lookup-mirror ((port basic-port) (sheet mirrored-sheet-mixin))
105 (gethash sheet (slot-value port 'sheet->mirror)))
106
107 (defmethod port-lookup-sheet ((port basic-port) mirror)
108 (gethash mirror (slot-value port 'mirror->sheet)))
109
110 (defmethod port-register-mirror ((port basic-port) (sheet mirrored-sheet-mixin) mirror)
111 (setf (gethash sheet (slot-value port 'sheet->mirror)) mirror)
112 (setf (gethash mirror (slot-value port 'mirror->sheet)) sheet)
113 nil)
114
115 (defmethod port-unregister-mirror ((port basic-port) (sheet mirrored-sheet-mixin) mirror)
116 (remhash sheet (slot-value port 'sheet->mirror))
117 (remhash mirror (slot-value port 'mirror->sheet))
118 nil)
119
120 (defmethod realize-mirror ((port basic-port) (sheet mirrored-sheet-mixin))
121 (error "Don't know how to realize the mirror of a generic mirrored-sheet"))
122
123 (defmethod destroy-mirror ((port basic-port) (sheet mirrored-sheet-mixin))
124 (error "Don't know how to destroy the mirror of a generic mirrored-sheet"))
125
126 (defmethod mirror-transformation ((port basic-port) mirror)
127 (declare (ignore mirror))
128 (error "MIRROR-TRANSFORMATION is not implemented for generic ports"))
129
130 (defmethod port-properties ((port basic-port) indicator)
131 (with-slots (properties) port
132 (getf properties indicator)))
133
134 (defmethod (setf port-properties) (value (port basic-port) indicator)
135 (with-slots (properties) port
136 (setf (getf properties indicator) value)))
137
138 (defmethod get-next-event ((port basic-port) &key wait-function timeout)
139 (declare (ignore wait-function timeout))
140 (error "Calling GET-NEXT-EVENT on a PORT protocol class"))
141
142 (defmethod process-next-event ((port basic-port) &key wait-function timeout)
143 (let ((event (get-next-event port :wait-function wait-function :timeout timeout)))
144 (cond
145 ((null event) nil)
146 ((eq event :timeout) (values nil :timeout))
147 (t
148 (distribute-event port event)
149 t))))
150
151 (defmethod distribute-event ((port basic-port) event)
152 (cond
153 ((typep event 'keyboard-event)
154 (dispatch-event (or (port-keyboard-input-focus port)
155 (event-sheet event)) event))
156 ((typep event 'window-event)
157 ; (dispatch-event (window-event-mirrored-sheet event) event))
158 (dispatch-event (event-sheet event) event))
159 ((typep event 'pointer-event)
160 (dispatch-event (event-sheet event) event))
161 ((typep event 'timer-event)
162 (error "Where do we send timer-events?"))
163 (t
164 (error "Unknown event ~S received in DISTRIBUTE-EVENT" event))))
165
166 (defmacro with-port-locked ((port) &body body)
167 (let ((fn (gensym "CONT.")))
168 `(labels ((,fn ()
169 ,@body))
170 (declare (dynamic-extent #',fn))
171 `(invoke-with-port-locked ,port #',fn))))
172
173 (defmethod invoke-with-port-locked ((port basic-port) continuation)
174 (with-recursive-lock-held ((port-lock port))
175 (funcall continuation)))
176
177 (defun map-over-ports (function)
178 (mapc function *all-ports*))
179
180 (defmethod restart-port ((port basic-port))
181 (reset-watcher port :restart)
182 nil)
183
184 (defmethod destroy-port ((port basic-port))
185 (reset-watcher port :destroy)
186 (setf *all-ports* (remove port *all-ports*)))
187
188 (defmethod add-watcher ((port basic-port) watcher)
189 (declare (ignore watcher))
190 nil)
191
192 (defmethod delete-watcher ((port basic-port) watcher)
193 (declare (ignore watcher))
194 nil)
195
196 (defmethod reset-watcher ((port basic-port) how)
197 (declare (ignore how))
198 nil)
199
200 (defmethod make-graft ((port basic-port) &key (orientation :default) (units :device))
201 (let ((graft (make-instance 'graft
202 :port port :mirror nil
203 :orientation orientation :units units)))
204 (push graft (port-grafts port))
205 graft))
206
207 #||
208 (defmethod make-medium ((port basic-port) sheet)
209 (make-instance 'basic-medium :port port :graft (graft sheet) :sheet sheet))
210 ||#
211
212 ;;; Pixmap
213
214 (defmethod port-lookup-mirror ((port basic-port) (pixmap pixmap))
215 (gethash pixmap (slot-value port 'pixmap->mirror)))
216
217 (defmethod port-lookup-pixmap ((port basic-port) mirror)
218 (gethash mirror (slot-value port 'mirror->pixmap)))
219
220 (defmethod port-register-mirror ((port basic-port) (pixmap pixmap) mirror)
221 (setf (gethash pixmap (slot-value port 'pixmap->mirror)) mirror)
222 (setf (gethash mirror (slot-value port 'mirror->pixmap)) pixmap)
223 nil)
224
225 (defmethod port-unregister-mirror ((port basic-port) (pixmap pixmap) mirror)
226 (remhash pixmap (slot-value port 'pixmap->mirror))
227 (remhash mirror (slot-value port 'mirror->pixmap))
228 nil)
229
230 (defmethod realize-mirror ((port basic-port) (pixmap mirrored-pixmap))
231 (declare (ignorable port pixmap))
232 (error "Don't know how to realize the mirror on a generic port"))
233
234 (defmethod destroy-mirror ((port basic-port) (pixmap mirrored-pixmap))
235 (declare (ignorable port pixmap))
236 (error "Don't know how to destroy the mirror on a generic port"))
237
238 (defmethod port-allocate-pixmap ((port basic-port) sheet width height)
239 (declare (ignore sheet width height))
240 (error "ALLOCATE-PIXMAP is not implemented for generic PORTs"))
241
242 (defmethod port-deallocate-pixmap ((port basic-port) pixmap)
243 (declare (ignore pixmap))
244 (error "DEALLOCATE-PIXMAP is not implemented for generic PORTs"))

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