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 "client.h"
  27 #include "ewmh.h"
  28 #include "wibox.h"
  29 #include "window.h"
  30 #include "luaa.h"
  31 #include "common/atoms.h"
  32 #include "common/xutil.h"
  33
  34
  35 #define HANDLE_TEXT_PROPERTY(funcname, atom, setfunc) \
  36     void \
  37     property_update_##funcname(client_t *c, xcb_get_property_reply_t *reply) \
  38     { \
  39         bool no_reply = !reply; \
  40         if(no_reply) \
  41             reply = xcb_get_property_reply(globalconf.connection, \
  42                                            xcb_get_any_property(globalconf.connection, \
  43                                                                 false, \
  44                                                                 c->window, \
  45                                                                 atom, \
  46                                                                 UINT_MAX), NULL); \
  47         luaA_object_push(globalconf.L, c); \
  48         setfunc(globalconf.L, -1, xutil_get_text_property_from_reply(reply)); \
  49         lua_pop(globalconf.L, 1); \
  50         if(no_reply) \
  51             p_delete(&reply); \
  52     } \
  53     static int \
  54     property_handle_##funcname(void *data, \
  55                                xcb_connection_t *connection, \
  56                                uint8_t state, \
  57                                xcb_window_t window, \
  58                                xcb_atom_t name, \
  59                                xcb_get_property_reply_t *reply) \
  60     { \
  61         client_t *c = client_getbywin(window); \
  62         if(c) \
  63             property_update_##funcname(c, reply); \
  64         return 0; \
  65     }
  66
  67
  68 HANDLE_TEXT_PROPERTY(wm_name, WM_NAME, client_set_alt_name)
  69 HANDLE_TEXT_PROPERTY(net_wm_name, _NET_WM_NAME, client_set_name)
  70 HANDLE_TEXT_PROPERTY(wm_icon_name, WM_ICON_NAME, client_set_alt_icon_name)
  71 HANDLE_TEXT_PROPERTY(net_wm_icon_name, _NET_WM_ICON_NAME, client_set_icon_name)
  72 HANDLE_TEXT_PROPERTY(wm_client_machine, WM_CLIENT_MACHINE, client_set_machine)
  73 HANDLE_TEXT_PROPERTY(wm_window_role, WM_WINDOW_ROLE, client_set_role)
  74
  75 #undef HANDLE_TEXT_PROPERTY
  76
  77 #define HANDLE_PROPERTY(name) \
  78     static int \
  79     property_handle_##name(void *data, \
  80                            xcb_connection_t *connection, \
  81                            uint8_t state, \
  82                            xcb_window_t window, \
  83                            xcb_atom_t name, \
  84                            xcb_get_property_reply_t *reply) \
  85     { \
  86         client_t *c = client_getbywin(window); \
  87         if(c) \
  88             property_update_##name(c, reply); \
  89         return 0; \
  90     }
  91
  92 HANDLE_PROPERTY(wm_protocols)
  93 HANDLE_PROPERTY(wm_transient_for)
  94 HANDLE_PROPERTY(wm_client_leader)
  95 HANDLE_PROPERTY(wm_normal_hints)
  96 HANDLE_PROPERTY(wm_hints)
  97 HANDLE_PROPERTY(wm_class)
  98 HANDLE_PROPERTY(net_wm_icon)
  99 HANDLE_PROPERTY(net_wm_pid)
 100
 101 #undef HANDLE_PROPERTY
 102
 103 void
 104 property_update_wm_transient_for(client_t *c, xcb_get_property_reply_t *reply)
 105 {
 106     xcb_window_t trans;
 107
 108     if(reply)
 109     {
 110         if(!xcb_get_wm_transient_for_from_reply(&trans, reply))
 111             return;
 112     }
 113     else
 114     {
 115         if(!xcb_get_wm_transient_for_reply(globalconf.connection,
 116                                             xcb_get_wm_transient_for_unchecked(globalconf.connection,
 117                                                                                c->window),
 118                                             &trans, NULL))
 119             return;
 120     }
 121
 122     luaA_object_push(globalconf.L, c);
 123     client_set_type(globalconf.L, -1, WINDOW_TYPE_DIALOG);
 124     client_set_above(globalconf.L, -1, false);
 125     client_set_transient_for(globalconf.L, -1, client_getbywin(trans));
 126     lua_pop(globalconf.L, 1);
 127 }
 128
 129 /** Update leader hint of a client.
 130  * \param c The client.
 131  * \param reply (Optional) An existing reply.
 132  */
 133 void
 134 property_update_wm_client_leader(client_t *c, xcb_get_property_reply_t *reply)
 135 {
 136     xcb_get_property_cookie_t client_leader_q;
 137     void *data;
 138     bool no_reply = !reply;
 139
 140     if(no_reply)
 141     {
 142         client_leader_q = xcb_get_property_unchecked(globalconf.connection, false, c->window,
 143                                                      WM_CLIENT_LEADER, WINDOW, 0, 32);
 144
 145         reply = xcb_get_property_reply(globalconf.connection, client_leader_q, NULL);
 146     }
 147
 148     if(reply && reply->value_len && (data = xcb_get_property_value(reply)))
 149         c->leader_window = *(xcb_window_t *) data;
 150
 151     /* Only free when we created a reply ourselves. */
 152     if(no_reply)
 153         p_delete(&reply);
 154 }
 155
 156 /** Update the size hints of a client.
 157  * \param c The client.
 158  * \param reply (Optional) An existing reply.
 159  */
 160 void
 161 property_update_wm_normal_hints(client_t *c, xcb_get_property_reply_t *reply)
 162 {
 163     if(reply)
 164     {
 165         if(!xcb_get_wm_size_hints_from_reply(&c->size_hints, reply))
 166             return;
 167     }
 168     else
 169     {
 170         if(!xcb_get_wm_normal_hints_reply(globalconf.connection,
 171                                           xcb_get_wm_normal_hints_unchecked(globalconf.connection,
 172                                                                             c->window),
 173                                           &c->size_hints, NULL))
 174             return;
 175     }
 176 }
 177
 178 /** Update the WM hints of a client.
 179  * \param c The client.
 180  * \param reply (Optional) An existing reply.
 181  */
 182 void
 183 property_update_wm_hints(client_t *c, xcb_get_property_reply_t *reply)
 184 {
 185     xcb_wm_hints_t wmh;
 186
 187     if(reply)
 188     {
 189         if(!xcb_get_wm_hints_from_reply(&wmh, reply))
 190             return;
 191     }
 192     else
 193     {
 194         if(!xcb_get_wm_hints_reply(globalconf.connection,
 195                                   xcb_get_wm_hints_unchecked(globalconf.connection, c->window),
 196                                   &wmh, NULL))
 197             return;
 198     }
 199
 200     luaA_object_push(globalconf.L, c);
 201     client_set_urgent(globalconf.L, -1, xcb_wm_hints_get_urgency(&wmh));
 202     if(wmh.flags & XCB_WM_HINT_STATE &&
 203        wmh.initial_state == XCB_WM_STATE_WITHDRAWN)
 204         client_set_border_width(globalconf.L, -1, 0);
 205
 206     if(wmh.flags & XCB_WM_HINT_INPUT)
 207         c->nofocus = !wmh.input;
 208
 209     if(wmh.flags & XCB_WM_HINT_WINDOW_GROUP)
 210         client_set_group_window(globalconf.L, -1, wmh.window_group);
 211 }
 212
 213 /** Update WM_CLASS of a client.
 214  * \param c The client.
 215  * \param reply The reply to get property request, or NULL if none.
 216  */
 217 void
 218 property_update_wm_class(client_t *c, xcb_get_property_reply_t *reply)
 219 {
 220     xcb_get_wm_class_reply_t hint;
 221
 222     if(reply)
 223     {
 224         if(!xcb_get_wm_class_from_reply(&hint, reply))
 225             return;
 226     }
 227     else
 228     {
 229         if(!xcb_get_wm_class_reply(globalconf.connection,
 230                                    xcb_get_wm_class_unchecked(globalconf.connection, c->window),
 231                                    &hint, NULL))
 232             return;
 233     }
 234
 235     luaA_object_push(globalconf.L, c);
 236     client_set_class_instance(globalconf.L, -1, hint.class_name, hint.instance_name);
 237     lua_pop(globalconf.L, 1);
 238
 239     /* only delete reply if we get it ourselves */
 240     if(!reply)
 241         xcb_get_wm_class_reply_wipe(&hint);
 242 }
 243
 244 static int
 245 property_handle_net_wm_strut_partial(void *data,
 246                                      xcb_connection_t *connection,
 247                                      uint8_t state,
 248                                      xcb_window_t window,
 249                                      xcb_atom_t name,
 250                                      xcb_get_property_reply_t *reply)
 251 {
 252     client_t *c = client_getbywin(window);
 253
 254     if(c)
 255         ewmh_process_client_strut(c, reply);
 256
 257     return 0;
 258 }
 259
 260 void
 261 property_update_net_wm_icon(client_t *c,
 262                             xcb_get_property_reply_t *reply)
 263 {
 264     luaA_object_push(globalconf.L, c);
 265
 266     if(reply)
 267     {
 268         if(ewmh_window_icon_from_reply(reply))
 269             client_set_icon(globalconf.L, -2, -1);
 270     }
 271     else if(ewmh_window_icon_get_reply(ewmh_window_icon_get_unchecked(c->window)))
 272         client_set_icon(globalconf.L, -2, -1);
 273
 274     /* remove client */
 275     lua_pop(globalconf.L, 1);
 276 }
 277
 278 void
 279 property_update_net_wm_pid(client_t *c,
 280                            xcb_get_property_reply_t *reply)
 281 {
 282     bool no_reply = !reply;
 283
 284     if(no_reply)
 285     {
 286         xcb_get_property_cookie_t prop_c =
 287             xcb_get_property_unchecked(globalconf.connection, false, c->window, _NET_WM_PID, CARDINAL, 0L, 1L);
 288         reply = xcb_get_property_reply(globalconf.connection, prop_c, NULL);
 289     }
 290
 291     if(reply && reply->value_len)
 292     {
 293         uint32_t *rdata = xcb_get_property_value(reply);
 294         if(rdata)
 295         {
 296             luaA_object_push(globalconf.L, c);
 297             client_set_pid(globalconf.L, -1, *rdata);
 298             lua_pop(globalconf.L, 1);
 299         }
 300     }
 301
 302     if(no_reply)
 303         p_delete(&reply);
 304 }
 305
 306 /** Update the list of supported protocols for a client.
 307  * \param c The client.
 308  * \param reply The xcb property reply.
 309  */
 310 void
 311 property_update_wm_protocols(client_t *c, xcb_get_property_reply_t *reply)
 312 {
 313     xcb_get_wm_protocols_reply_t protocols;
 314
 315     if(reply)
 316     {
 317         if(!xcb_get_wm_protocols_from_reply(reply, &protocols))
 318             return;
 319     }
 320     else
 321     {
 322         /* If this fails for any reason, we still got the old value */
 323         if(!xcb_get_wm_protocols_reply(globalconf.connection,
 324                                       xcb_get_wm_protocols_unchecked(globalconf.connection,
 325                                                                      c->window, WM_PROTOCOLS),
 326                                       &protocols, NULL))
 327             return;
 328     }
 329
 330     xcb_get_wm_protocols_reply_wipe(&c->protocols);
 331     memcpy(&c->protocols, &protocols, sizeof(protocols));
 332 }
 333
 334 /** The property notify event handler.
 335  * \param data currently unused.
 336  * \param connection The connection to the X server.
 337  * \param state currently unused
 338  * \param window The window to obtain update the property with.
 339  * \param name The protocol atom, currently unused.
 340  * \param reply (Optional) An existing reply.
 341  */
 342 static int
 343 property_handle_xembed_info(void *data __attribute__ ((unused)),
 344                             xcb_connection_t *connection,
 345                             uint8_t state,
 346                             xcb_window_t window,
 347                             xcb_atom_t name,
 348                             xcb_get_property_reply_t *reply)
 349 {
 350     xembed_window_t *emwin = xembed_getbywin(&globalconf.embedded, window);
 351
 352     if(emwin)
 353         xembed_property_update(connection, emwin, reply);
 354
 355     return 0;
 356 }
 357
 358 static int
 359 property_handle_xrootpmap_id(void *data __attribute__ ((unused)),
 360                              xcb_connection_t *connection,
 361                              uint8_t state,
 362                              xcb_window_t window,
 363                              xcb_atom_t name,
 364                              xcb_get_property_reply_t *reply)
 365 {
 366     if(globalconf.xinerama_is_active)
 367         foreach(w, globalconf.wiboxes)
 368             (*w)->need_update = true;
 369     else
 370     {
 371         int screen = xutil_root2screen(connection, window);
 372         foreach(w, globalconf.wiboxes)
 373             if(screen == screen_array_indexof(&globalconf.screens, (*w)->screen))
 374                (*w)->need_update = true;
 375     }
 376
 377     return 0;
 378 }
 379
 380 static int
 381 property_handle_net_wm_opacity(void *data __attribute__ ((unused)),
 382                                xcb_connection_t *connection,
 383                                uint8_t state,
 384                                xcb_window_t window,
 385                                xcb_atom_t name,
 386                                xcb_get_property_reply_t *reply)
 387 {
 388     wibox_t *wibox = wibox_getbywin(window);
 389
 390     if(wibox)
 391     {
 392         luaA_object_push(globalconf.L, wibox);
 393         wibox_set_opacity(globalconf.L, -1, window_opacity_get_from_reply(reply));
 394         lua_pop(globalconf.L, -1);
 395     }
 396     else
 397     {
 398         client_t *c = client_getbywin(window);
 399         if(c)
 400         {
 401             luaA_object_push(globalconf.L, c);
 402             client_set_opacity(globalconf.L, -1, window_opacity_get_from_reply(reply));
 403             lua_pop(globalconf.L, 1);
 404         }
 405     }
 406
 407     return 0;
 408 }
 409
 410 void a_xcb_set_property_handlers(void)
 411 {
 412     /* init */
 413     xcb_property_handlers_init(&globalconf.prophs, &globalconf.evenths);
 414
 415     /* Xembed stuff */
 416     xcb_property_set_handler(&globalconf.prophs, _XEMBED_INFO, UINT_MAX,
 417                              property_handle_xembed_info, NULL);
 418
 419     /* ICCCM stuff */
 420     xcb_property_set_handler(&globalconf.prophs, WM_TRANSIENT_FOR, UINT_MAX,
 421                              property_handle_wm_transient_for, NULL);
 422     xcb_property_set_handler(&globalconf.prophs, WM_CLIENT_LEADER, UINT_MAX,
 423                              property_handle_wm_client_leader, NULL);
 424     xcb_property_set_handler(&globalconf.prophs, WM_NORMAL_HINTS, UINT_MAX,
 425                              property_handle_wm_normal_hints, NULL);
 426     xcb_property_set_handler(&globalconf.prophs, WM_HINTS, UINT_MAX,
 427                              property_handle_wm_hints, NULL);
 428     xcb_property_set_handler(&globalconf.prophs, WM_NAME, UINT_MAX,
 429                              property_handle_wm_name, NULL);
 430     xcb_property_set_handler(&globalconf.prophs, WM_ICON_NAME, UINT_MAX,
 431                              property_handle_wm_icon_name, NULL);
 432     xcb_property_set_handler(&globalconf.prophs, WM_CLASS, UINT_MAX,
 433                              property_handle_wm_class, NULL);
 434     xcb_property_set_handler(&globalconf.prophs, WM_PROTOCOLS, UINT_MAX,
 435                              property_handle_wm_protocols, NULL);
 436     xcb_property_set_handler(&globalconf.prophs, WM_CLIENT_MACHINE, UINT_MAX,
 437                              property_handle_wm_client_machine, NULL);
 438     xcb_property_set_handler(&globalconf.prophs, WM_WINDOW_ROLE, UINT_MAX,
 439                              property_handle_wm_window_role, NULL);
 440
 441     /* EWMH stuff */
 442     xcb_property_set_handler(&globalconf.prophs, _NET_WM_NAME, UINT_MAX,
 443                              property_handle_net_wm_name, NULL);
 444     xcb_property_set_handler(&globalconf.prophs, _NET_WM_ICON_NAME, UINT_MAX,
 445                              property_handle_net_wm_icon_name, NULL);
 446     xcb_property_set_handler(&globalconf.prophs, _NET_WM_STRUT_PARTIAL, UINT_MAX,
 447                              property_handle_net_wm_strut_partial, NULL);
 448     xcb_property_set_handler(&globalconf.prophs, _NET_WM_ICON, UINT_MAX,
 449                              property_handle_net_wm_icon, NULL);
 450     xcb_property_set_handler(&globalconf.prophs, _NET_WM_PID, UINT_MAX,
 451                              property_handle_net_wm_pid, NULL);
 452     xcb_property_set_handler(&globalconf.prophs, _NET_WM_WINDOW_OPACITY, 1,
 453                              property_handle_net_wm_opacity, NULL);
 454
 455     /* background change */
 456     xcb_property_set_handler(&globalconf.prophs, _XROOTPMAP_ID, 1,
 457                              property_handle_xrootpmap_id, NULL);
 458 }
 459
 460 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80