src/clfswm.lisp

   1 ;;; --------------------------------------------------------------------------
   2 ;;; CLFSWM - FullScreen Window Manager
   3 ;;;
   4 ;;; --------------------------------------------------------------------------
   5 ;;; Documentation: Main functions
   6 ;;; --------------------------------------------------------------------------
   7 ;;;
   8 ;;; (C) 2012 Philippe Brochard <pbrochard@common-lisp.net>
   9 ;;;
  10 ;;; This program is free software; you can redistribute it and/or modify
  11 ;;; it under the terms of the GNU General Public License as published by
  12 ;;; the Free Software Foundation; either version 3 of the License, or
  13 ;;; (at your option) any later version.
  14 ;;;
  15 ;;; This program is distributed in the hope that it will be useful,
  16 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;;; GNU General Public License for more details.
  19 ;;;
  20 ;;; You should have received a copy of the GNU General Public License
  21 ;;; along with this program; if not, write to the Free Software
  22 ;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23 ;;;
  24 ;;; --------------------------------------------------------------------------
  25
  26 (in-package :clfswm)
  27
  28
  29 (define-handler main-mode :key-press (code state)
  30   (funcall-key-from-code *main-keys* code state))
  31
  32 (define-handler main-mode :button-press (code state window root-x root-y)
  33   (unless (funcall-button-from-code *main-mouse* code state window root-x root-y *fun-press*)
  34     (replay-button-event)))
  35
  36 (define-handler main-mode :button-release (code state window root-x root-y)
  37   (unless (funcall-button-from-code *main-mouse* code state window root-x root-y *fun-release*)
  38     (replay-button-event)))
  39
  40 (define-handler main-mode :motion-notify (window root-x root-y)
  41   (unless (compress-motion-notify)
  42     (funcall-button-from-code *main-mouse* 'motion
  43                               (modifiers->state *default-modifiers*)
  44                               window root-x root-y *fun-press*)))
  45
  46
  47 (define-handler main-mode :configure-request (stack-mode window x y width height border-width value-mask)
  48   (let ((change nil))
  49     (labels ((has-x (mask) (= 1 (logand mask 1)))
  50              (has-y (mask) (= 2 (logand mask 2)))
  51              (has-w (mask) (= 4 (logand mask 4)))
  52              (has-h (mask) (= 8 (logand mask 8)))
  53              (has-bw (mask) (= 16 (logand mask 16)))
  54              (has-stackmode (mask) (= 64 (logand mask 64)))
  55              (adjust-from-request ()
  56                (when (has-x value-mask) (setf (x-drawable-x window) x
  57                                               change :moved))
  58                (when (has-y value-mask) (setf (x-drawable-y window) y
  59                                               change :moved))
  60                (when (has-h value-mask) (setf (x-drawable-height window) height
  61                                               change :resized))
  62                (when (has-w value-mask) (setf (x-drawable-width window) width
  63                                               change :resized))))
  64       (when window
  65         (xlib:with-state (window)
  66           (let ((current-root (find-current-root)))
  67             (if (find-child window current-root)
  68                 (let ((parent (find-parent-frame window current-root)))
  69                   (if (and parent (managed-window-p window parent))
  70                       (setf change (adapt-child-to-parent window parent))
  71                       (adjust-from-request)))
  72                 (adjust-from-request)))
  73           (when (has-bw value-mask)
  74             (setf (x-drawable-border-width window) border-width
  75                   change :resized))
  76           (when (has-stackmode value-mask)
  77             (case stack-mode
  78               (:above
  79                (when (or (child-equal-p window (current-child))
  80                          (is-in-current-child-p window))
  81                  (setf change (or change :moved))
  82                  (focus-window window)
  83                  (focus-all-children window (find-parent-frame window (find-current-root)))
  84                  (show-all-children))))))
  85         (unless (eq change :resized)
  86           ;; To be ICCCM compliant, send a fake configuration notify event only when
  87           ;; the window has moved and not when it has been resized or the border width has changed.
  88           (send-configuration-notify window (x-drawable-x window) (x-drawable-y window)
  89                                      (x-drawable-width window) (x-drawable-height window)
  90                                      (x-drawable-border-width window)))))))
  91
  92
  93 (define-handler main-mode :map-request (window send-event-p)
  94   (unless send-event-p
  95     (unless (find-child window *root-frame*)
  96       (unhide-window window)
  97       (process-new-window window)
  98       (map-window window)
  99       (multiple-value-bind (never-managed raise)
 100           (never-managed-window-p window)
 101         (unless (and never-managed raise)
 102           (show-all-children))))))
 103
 104
 105
 106 (define-handler main-mode :unmap-notify (send-event-p event-window window)
 107   (unless (and (not send-event-p)
 108                (not (xlib:window-equal window event-window)))
 109     (when (find-child window *root-frame*)
 110       (setf (window-state window) +withdrawn-state+)
 111       (remove-child-in-all-frames window)
 112       (show-all-children))))
 113
 114
 115 (define-handler main-mode :destroy-notify (send-event-p event-window window)
 116   (unless (or send-event-p
 117               (xlib:window-equal window event-window))
 118     (when (find-child window *root-frame*)
 119       (delete-child-in-all-frames window)
 120       (xlib:destroy-window window)
 121       (show-all-children))))
 122
 123
 124 (define-handler main-mode :enter-notify  (window root-x root-y)
 125   (unless (and (> root-x (- (xlib:screen-width *screen*) 3))
 126                (> root-y (- (xlib:screen-height *screen*) 3)))
 127     (manage-focus  window root-x root-y)))
 128
 129
 130 (define-handler main-mode :exposure (window)
 131   (awhen (find-frame-window window)
 132     (display-frame-info it)))
 133
 134
 135 (define-handler main-mode :configure-notify (window)
 136   (when (child-equal-p window *root*)
 137     (unless (eql (place-frames-from-xinerama-infos) :update)
 138       (finish-configuring-root))
 139     (show-all-children)
 140     (call-hook *root-size-change-hook*)))
 141
 142
 143 (defun error-handler (display error-key &rest key-vals &key asynchronous &allow-other-keys)
 144   "Handle X errors"
 145   (cond
 146     ;; ignore asynchronous window errors
 147     ((and asynchronous
 148           (find error-key '(xlib:window-error xlib:drawable-error xlib:match-error)))
 149      #+:xlib-debug (format t "~&Ignoring XLib asynchronous error: ~s~%" error-key))
 150     ((eq error-key 'xlib:access-error)
 151      (write-line "~&Another window manager is running.")
 152      (throw 'exit-clfswm nil))
 153     ;; all other asynchronous errors are printed.
 154     (asynchronous
 155      #+:xlib-debug (format t "~&Caught Asynchronous X Error: ~s ~s" error-key key-vals))
 156     ;;((find error-key '(xlib:window-error xlib:drawable-error xlib:match-error))
 157     ;; (format t "~&Ignoring Xlib error: ~S ~S~%" error-key key-vals))
 158     (t
 159      (apply 'error error-key :display display :error-key error-key key-vals))))
 160
 161
 162 (defun main-loop ()
 163   (loop
 164      (with-xlib-protect (:main-loop nil)
 165        (call-hook *loop-hook*)
 166        (process-timers)
 167        (when (xlib:event-listen *display* *loop-timeout*)
 168          (xlib:process-event *display* :handler #'handle-event))
 169        (xlib:display-finish-output *display*)
 170        (setf *x-error-count* 0))))
 171
 172
 173
 174
 175 (defun open-display (display-str protocol)
 176   (multiple-value-bind (host display-num) (parse-display-string display-str)
 177     (setf *display* (xlib:open-display host :display display-num :protocol protocol)
 178           (xlib:display-error-handler *display*) 'error-handler
 179           (getenv "DISPLAY") display-str)))
 180
 181
 182
 183 (defun default-init-hook ()
 184   (place-frames-from-xinerama-infos)
 185   (finish-configuring-root))
 186
 187
 188 (defun init-display ()
 189   (reset-root-list)
 190   (reset-last-head-size)
 191   (reset-bind-or-jump-slots)
 192   (reset-open-menu)
 193   (fill-handle-event-fun-symbols)
 194   (assoc-keyword-handle-event 'main-mode)
 195   (setf *screen* (first (xlib:display-roots *display*))
 196         *root* (xlib:screen-root *screen*)
 197         *no-focus-window* (xlib:create-window :parent *root* :x 0 :y 0 :width 1 :height 1)
 198         *default-font* (xlib:open-font *display* *default-font-string*)
 199         *pixmap-buffer* (xlib:create-pixmap :width (xlib:screen-width *screen*)
 200                                             :height (xlib:screen-height *screen*)
 201                                             :depth (xlib:screen-root-depth *screen*)
 202                                             :drawable *root*)
 203         *in-second-mode* nil
 204         *x-error-count* 0)
 205   (store-root-background)
 206   (init-modifier-list)
 207   (xgrab-init-pointer)
 208   (xgrab-init-keyboard)
 209   (init-last-child)
 210   (call-hook *binding-hook*)
 211   (clear-timers)
 212   (map-window *no-focus-window*)
 213   (dbg *display*)
 214   (setf (xlib:window-event-mask *root*) (xlib:make-event-mask :substructure-redirect
 215                                                               :substructure-notify
 216                                                               :structure-notify
 217                                                               :property-change
 218                                                               ;;:resize-redirect
 219                                                               :exposure
 220                                                               :button-press
 221                                                               :button-release
 222                                                               :pointer-motion))
 223   (xlib:display-finish-output *display*)
 224   ;;(intern-atoms *display*)
 225   (netwm-set-properties)
 226   (xlib:display-force-output *display*)
 227   (setf *child-selection* nil)
 228   (setf *root-frame* (create-frame :name "Root" :number 0)
 229         (current-child) *root-frame*)
 230   (call-hook *init-hook*)
 231   (process-existing-windows *screen*)
 232   (show-all-children)
 233   (grab-main-keys)
 234   (xlib:display-finish-output *display*)
 235   (optimize-event-hook))
 236
 237
 238
 239
 240 (defun read-conf-file ()
 241   (let* ((conf (conf-file-name)))
 242     (if conf
 243         (handler-case (load conf)
 244           (error (c)
 245             (format t "~2%*** Error loading configuration file: ~A ***~&~A~%" conf c)
 246             (values nil (format nil "~s" c) conf))
 247           (:no-error (&rest args)
 248             (declare (ignore args))
 249             (values t nil conf)))
 250         (values t nil nil))))
 251
 252
 253
 254
 255
 256
 257 (defun exit-clfswm ()
 258   "Exit clfswm"
 259   (throw 'exit-clfswm nil))
 260
 261 (defun reset-clfswm ()
 262   "Reset clfswm"
 263   (throw 'exit-main-loop nil))
 264
 265
 266
 267
 268 (defun main-unprotected (&key (display (or (getenv "DISPLAY") ":0")) protocol
 269                          (read-conf-file-p t) (alternate-conf nil)
 270                          error-msg)
 271   (conf-file-name alternate-conf)
 272   (when read-conf-file-p
 273     (read-conf-file))
 274   (create-configuration-menu :clear t)
 275   (call-hook *main-entrance-hook*)
 276   (handler-case
 277       (open-display display protocol)
 278     (xlib:access-error (c)
 279       (format t "~&~A~&Maybe another window manager is running. [1]~%" c)
 280       (force-output)
 281       (exit-clfswm)))
 282   (handler-case
 283       (init-display)
 284     (xlib:access-error (c)
 285       (ungrab-main-keys)
 286       (xlib:destroy-window *no-focus-window*)
 287       (xlib:close-display *display*)
 288       (format t "~&~A~&Maybe another window manager is running. [2]~%" c)
 289       (force-output)
 290       (exit-clfswm)))
 291   (when error-msg
 292     (info-mode error-msg))
 293   (catch 'exit-main-loop
 294       (unwind-protect
 295            (main-loop)
 296         (progn
 297           (ungrab-main-keys)
 298           (xlib:destroy-window *no-focus-window*)
 299           (xlib:free-pixmap *pixmap-buffer*)
 300           (destroy-all-frames-window)
 301           (call-hook *close-hook*)
 302           (clear-event-hooks)
 303           (xlib:close-display *display*)
 304           #+:event-debug
 305           (format t "~2&Unhandled events: ~A~%" *unhandled-events*)))))
 306
 307
 308
 309 (defun main (&key (display (or (getenv "DISPLAY") ":0")) protocol
 310              (read-conf-file-p t)
 311              (alternate-conf nil))
 312   (let (error-msg)
 313     (catch 'exit-clfswm
 314       (loop
 315          (handler-case
 316              (if *other-window-manager*
 317                  (run-other-window-manager)
 318                  (main-unprotected :display display :protocol protocol
 319                                    :read-conf-file-p read-conf-file-p
 320                                    :alternate-conf alternate-conf
 321                                    :error-msg error-msg))
 322            (error (c)
 323              (let ((msg (format nil "CLFSWM Error: ~A." c)))
 324                (format t "~&~A~%Reinitializing...~%" msg)
 325                (setf error-msg (list (list msg *info-color-title*)
 326                                      "Reinitializing...")))))))))
 327
 328
 329