property.c

   1 /*
   2  * property.c - property handlers
   3  *
   4  * Copyright © 2008-2009 Julien Danjou <julien@danjou.info>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22 #include <xcb/xcb_atom.h>
  23
  24 #include "screen.h"
  25 #include "property.h"
  26 #include "objects/client.h"
  27 #include "ewmh.h"
  28 #include "objects/drawin.h"
  29 #include "xwindow.h"
  30 #include "luaa.h"
  31 #include "common/atoms.h"
  32 #include "common/xutil.h"
  33
  34 #define HANDLE_TEXT_PROPERTY(funcname, atom, setfunc) \
  35     xcb_get_property_cookie_t \
  36     property_get_##funcname(client_t *c) \
  37     { \
  38         return xcb_get_property(globalconf.connection, \
  39                                 false, \
  40                                 c->window, \
  41                                 atom, \
  42                                 XCB_GET_PROPERTY_TYPE_ANY, \
  43                                 0, \
  44                                 UINT_MAX); \
  45     } \
  46     void \
  47     property_update_##funcname(client_t *c, xcb_get_property_cookie_t cookie) \
  48     { \
  49         xcb_get_property_reply_t * reply = \
  50                     xcb_get_property_reply(globalconf.connection, cookie, NULL); \
  51         luaA_object_push(globalconf.L, c); \
  52         setfunc(globalconf.L, -1, xutil_get_text_property_from_reply(reply)); \
  53         lua_pop(globalconf.L, 1); \
  54         p_delete(&reply); \
  55     } \
  56     static int \
  57     property_handle_##funcname(uint8_t state, \
  58                                xcb_window_t window) \
  59     { \
  60         client_t *c = client_getbywin(window); \
  61         if(c) \
  62             property_update_##funcname(c, property_get_##funcname(c));\
  63         return 0; \
  64     }
  65
  66
  67 HANDLE_TEXT_PROPERTY(wm_name, XCB_ATOM_WM_NAME, client_set_alt_name)
  68 HANDLE_TEXT_PROPERTY(net_wm_name, _NET_WM_NAME, client_set_name)
  69 HANDLE_TEXT_PROPERTY(wm_icon_name, XCB_ATOM_WM_ICON_NAME, client_set_alt_icon_name)
  70 HANDLE_TEXT_PROPERTY(net_wm_icon_name, _NET_WM_ICON_NAME, client_set_icon_name)
  71 HANDLE_TEXT_PROPERTY(wm_client_machine, XCB_ATOM_WM_CLIENT_MACHINE, client_set_machine)
  72 HANDLE_TEXT_PROPERTY(wm_window_role, WM_WINDOW_ROLE, client_set_role)
  73
  74 #undef HANDLE_TEXT_PROPERTY
  75
  76 #define HANDLE_PROPERTY(name) \
  77     static int \
  78     property_handle_##name(uint8_t state, \
  79                            xcb_window_t window) \
  80     { \
  81         client_t *c = client_getbywin(window); \
  82         if(c) \
  83             property_update_##name(c, property_get_##name(c));\
  84         return 0; \
  85     }
  86
  87 HANDLE_PROPERTY(wm_protocols)
  88 HANDLE_PROPERTY(wm_transient_for)
  89 HANDLE_PROPERTY(wm_client_leader)
  90 HANDLE_PROPERTY(wm_normal_hints)
  91 HANDLE_PROPERTY(wm_hints)
  92 HANDLE_PROPERTY(wm_class)
  93 HANDLE_PROPERTY(net_wm_icon)
  94 HANDLE_PROPERTY(net_wm_pid)
  95
  96 #undef HANDLE_PROPERTY
  97
  98 xcb_get_property_cookie_t
  99 property_get_wm_transient_for(client_t *c)
 100 {
 101     return xcb_icccm_get_wm_transient_for_unchecked(globalconf.connection, c->window);
 102 }
 103
 104 void
 105 property_update_wm_transient_for(client_t *c, xcb_get_property_cookie_t cookie)
 106 {
 107     xcb_window_t trans;
 108
 109     if(!xcb_icccm_get_wm_transient_for_reply(globalconf.connection,
 110                                              cookie,
 111                                              &trans, NULL))
 112             return;
 113
 114     luaA_object_push(globalconf.L, c);
 115     client_set_type(globalconf.L, -1, WINDOW_TYPE_DIALOG);
 116     client_set_above(globalconf.L, -1, false);
 117     client_set_transient_for(globalconf.L, -1, client_getbywin(trans));
 118     lua_pop(globalconf.L, 1);
 119 }
 120
 121 xcb_get_property_cookie_t
 122 property_get_wm_client_leader(client_t *c)
 123 {
 124     return xcb_get_property_unchecked(globalconf.connection, false, c->window,
 125                                       WM_CLIENT_LEADER, XCB_ATOM_WINDOW, 1, 32);
 126 }
 127
 128 /** Update leader hint of a client.
 129  * \param c The client.
 130  * \param cookie Cookie returned by property_get_wm_client_leader.
 131  */
 132 void
 133 property_update_wm_client_leader(client_t *c, xcb_get_property_cookie_t cookie)
 134 {
 135     xcb_get_property_reply_t *reply;
 136     void *data;
 137
 138     reply = xcb_get_property_reply(globalconf.connection, cookie, NULL);
 139
 140     if(reply && reply->value_len && (data = xcb_get_property_value(reply)))
 141         c->leader_window = *(xcb_window_t *) data;
 142
 143     p_delete(&reply);
 144 }
 145
 146 xcb_get_property_cookie_t
 147 property_get_wm_normal_hints(client_t *c)
 148 {
 149     return xcb_icccm_get_wm_normal_hints_unchecked(globalconf.connection, c->window);
 150 }
 151
 152 /** Update the size hints of a client.
 153  * \param c The client.
 154  * \param cookie Cookie returned by property_get_wm_normal_hints.
 155  */
 156 void
 157 property_update_wm_normal_hints(client_t *c, xcb_get_property_cookie_t cookie)
 158 {
 159     xcb_icccm_get_wm_normal_hints_reply(globalconf.connection,
 160                                         cookie,
 161                                         &c->size_hints, NULL);
 162 }
 163
 164 xcb_get_property_cookie_t
 165 property_get_wm_hints(client_t *c)
 166 {
 167     return xcb_icccm_get_wm_hints_unchecked(globalconf.connection, c->window);
 168 }
 169
 170 /** Update the WM hints of a client.
 171  * \param c The client.
 172  * \param cookie Cookie returned by property_get_wm_hints.
 173  */
 174 void
 175 property_update_wm_hints(client_t *c, xcb_get_property_cookie_t cookie)
 176 {
 177     xcb_icccm_wm_hints_t wmh;
 178
 179     if(!xcb_icccm_get_wm_hints_reply(globalconf.connection,
 180                                      cookie,
 181                                      &wmh, NULL))
 182         return;
 183
 184     luaA_object_push(globalconf.L, c);
 185     client_set_urgent(globalconf.L, -1, xcb_icccm_wm_hints_get_urgency(&wmh));
 186
 187     if(wmh.flags & XCB_ICCCM_WM_HINT_INPUT)
 188         c->nofocus = !wmh.input;
 189
 190     if(wmh.flags & XCB_ICCCM_WM_HINT_WINDOW_GROUP)
 191         client_set_group_window(globalconf.L, -1, wmh.window_group);
 192
 193     lua_pop(globalconf.L, 1);
 194 }
 195
 196 xcb_get_property_cookie_t
 197 property_get_wm_class(client_t *c)
 198 {
 199     return xcb_icccm_get_wm_class_unchecked(globalconf.connection, c->window);
 200 }
 201
 202 /** Update WM_CLASS of a client.
 203  * \param c The client.
 204  * \param cookie Cookie returned by property_get_wm_class.
 205  */
 206 void
 207 property_update_wm_class(client_t *c, xcb_get_property_cookie_t cookie)
 208 {
 209     xcb_icccm_get_wm_class_reply_t hint;
 210
 211     if(!xcb_icccm_get_wm_class_reply(globalconf.connection,
 212                                      cookie,
 213                                      &hint, NULL))
 214         return;
 215
 216     luaA_object_push(globalconf.L, c);
 217     client_set_class_instance(globalconf.L, -1, hint.class_name, hint.instance_name);
 218     lua_pop(globalconf.L, 1);
 219
 220     xcb_icccm_get_wm_class_reply_wipe(&hint);
 221 }
 222
 223 static int
 224 property_handle_net_wm_strut_partial(uint8_t state,
 225                                      xcb_window_t window)
 226 {
 227     client_t *c = client_getbywin(window);
 228
 229     if(c)
 230         ewmh_process_client_strut(c);
 231
 232     return 0;
 233 }
 234
 235 xcb_get_property_cookie_t
 236 property_get_net_wm_icon(client_t *c)
 237 {
 238     return ewmh_window_icon_get_unchecked(c->window);
 239 }
 240
 241 void
 242 property_update_net_wm_icon(client_t *c, xcb_get_property_cookie_t cookie)
 243 {
 244     cairo_surface_t *surface = ewmh_window_icon_get_reply(cookie);
 245
 246     if(!surface)
 247         return;
 248
 249     client_set_icon(c, surface);
 250     cairo_surface_destroy(surface);
 251 }
 252
 253 xcb_get_property_cookie_t
 254 property_get_net_wm_pid(client_t *c)
 255 {
 256     return xcb_get_property_unchecked(globalconf.connection, false, c->window, _NET_WM_PID, XCB_ATOM_CARDINAL, 0L, 1L);
 257 }
 258
 259 void
 260 property_update_net_wm_pid(client_t *c, xcb_get_property_cookie_t cookie)
 261 {
 262     xcb_get_property_reply_t *reply;
 263
 264     reply = xcb_get_property_reply(globalconf.connection, cookie, NULL);
 265
 266     if(reply && reply->value_len)
 267     {
 268         uint32_t *rdata = xcb_get_property_value(reply);
 269         if(rdata)
 270         {
 271             luaA_object_push(globalconf.L, c);
 272             client_set_pid(globalconf.L, -1, *rdata);
 273             lua_pop(globalconf.L, 1);
 274         }
 275     }
 276
 277     p_delete(&reply);
 278 }
 279
 280 xcb_get_property_cookie_t
 281 property_get_wm_protocols(client_t *c)
 282 {
 283     return xcb_icccm_get_wm_protocols_unchecked(globalconf.connection,
 284                                                 c->window, WM_PROTOCOLS);
 285 }
 286
 287 /** Update the list of supported protocols for a client.
 288  * \param c The client.
 289  * \param cookie Cookie from property_get_wm_protocols.
 290  */
 291 void
 292 property_update_wm_protocols(client_t *c, xcb_get_property_cookie_t cookie)
 293 {
 294     xcb_icccm_get_wm_protocols_reply_t protocols;
 295
 296     /* If this fails for any reason, we still got the old value */
 297     if(!xcb_icccm_get_wm_protocols_reply(globalconf.connection,
 298                                          cookie,
 299                                          &protocols, NULL))
 300         return;
 301
 302     xcb_icccm_get_wm_protocols_reply_wipe(&c->protocols);
 303     memcpy(&c->protocols, &protocols, sizeof(protocols));
 304 }
 305
 306 /** The property notify event handler.
 307  * \param state currently unused
 308  * \param window The window to obtain update the property with.
 309  * \param name The protocol atom, currently unused.
 310  * \param reply (Optional) An existing reply.
 311  */
 312 static int
 313 property_handle_xembed_info(uint8_t state,
 314                             xcb_window_t window)
 315 {
 316     xembed_window_t *emwin = xembed_getbywin(&globalconf.embedded, window);
 317
 318     if(emwin)
 319     {
 320         xcb_get_property_cookie_t cookie =
 321             xcb_get_property(globalconf.connection, 0, window, _XEMBED_INFO,
 322                              XCB_GET_PROPERTY_TYPE_ANY, 0, 3);
 323         xcb_get_property_reply_t *propr =
 324             xcb_get_property_reply(globalconf.connection, cookie, 0);
 325         xembed_property_update(globalconf.connection, emwin, propr);
 326         p_delete(&propr);
 327     }
 328
 329     return 0;
 330 }
 331
 332 static int
 333 property_handle_net_wm_opacity(uint8_t state,
 334                                xcb_window_t window)
 335 {
 336     drawin_t *drawin = drawin_getbywin(window);
 337
 338     if(drawin)
 339     {
 340         luaA_object_push(globalconf.L, drawin);
 341         window_set_opacity(globalconf.L, -1, xwindow_get_opacity(drawin->window));
 342         lua_pop(globalconf.L, -1);
 343     }
 344     else
 345     {
 346         client_t *c = client_getbywin(window);
 347         if(c)
 348         {
 349             luaA_object_push(globalconf.L, c);
 350             window_set_opacity(globalconf.L, -1, xwindow_get_opacity(c->window));
 351             lua_pop(globalconf.L, 1);
 352         }
 353     }
 354
 355     return 0;
 356 }
 357
 358 static int
 359 property_handle_xrootpmap_id(uint8_t state,
 360                              xcb_window_t window)
 361 {
 362     signal_object_emit(globalconf.L, &global_signals, "wallpaper_changed", 0);
 363     return 0;
 364 }
 365
 366
 367 /** The property notify event handler.
 368  * \param data Unused data.
 369  * \param connection The connection to the X server.
 370  * \param ev The event.
 371  * \return Status code, 0 if everything's fine.
 372  */
 373 void
 374 property_handle_propertynotify(xcb_property_notify_event_t *ev)
 375 {
 376     int (*handler)(uint8_t state,
 377                    xcb_window_t window) = NULL;
 378
 379     globalconf.timestamp = ev->time;
 380
 381     /* Find the correct event handler */
 382 #define HANDLE(atom_, cb) \
 383     if (ev->atom == atom_) \
 384     { \
 385         handler = cb; \
 386     } else
 387 #define END return
 388
 389     /* Xembed stuff */
 390     HANDLE(_XEMBED_INFO, property_handle_xembed_info)
 391
 392     /* ICCCM stuff */
 393     HANDLE(XCB_ATOM_WM_TRANSIENT_FOR, property_handle_wm_transient_for)
 394     HANDLE(WM_CLIENT_LEADER, property_handle_wm_client_leader)
 395     HANDLE(XCB_ATOM_WM_NORMAL_HINTS, property_handle_wm_normal_hints)
 396     HANDLE(XCB_ATOM_WM_HINTS, property_handle_wm_hints)
 397     HANDLE(XCB_ATOM_WM_NAME, property_handle_wm_name)
 398     HANDLE(XCB_ATOM_WM_ICON_NAME, property_handle_wm_icon_name)
 399     HANDLE(XCB_ATOM_WM_CLASS, property_handle_wm_class)
 400     HANDLE(WM_PROTOCOLS, property_handle_wm_protocols)
 401     HANDLE(XCB_ATOM_WM_CLIENT_MACHINE, property_handle_wm_client_machine)
 402     HANDLE(WM_WINDOW_ROLE, property_handle_wm_window_role)
 403
 404     /* EWMH stuff */
 405     HANDLE(_NET_WM_NAME, property_handle_net_wm_name)
 406     HANDLE(_NET_WM_ICON_NAME, property_handle_net_wm_icon_name)
 407     HANDLE(_NET_WM_STRUT_PARTIAL, property_handle_net_wm_strut_partial)
 408     HANDLE(_NET_WM_ICON, property_handle_net_wm_icon)
 409     HANDLE(_NET_WM_PID, property_handle_net_wm_pid)
 410     HANDLE(_NET_WM_WINDOW_OPACITY, property_handle_net_wm_opacity)
 411
 412     /* background change */
 413     HANDLE(_XROOTPMAP_ID, property_handle_xrootpmap_id)
 414
 415     /* If nothing was found, return */
 416     END;
 417
 418 #undef HANDLE
 419 #undef END
 420
 421     (*handler)(ev->state, ev->window);
 422 }
 423
 424 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80