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