event.c

   1 /*
   2  * event.c - event handlers
   3  *
   4  * Copyright © 2007-2008 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.h>
  23 #include <xcb/randr.h>
  24 #include <xcb/xcb_atom.h>
  25 #include <xcb/xcb_icccm.h>
  26 #include <xcb/xcb_event.h>
  27
  28 #include "awesome.h"
  29 #include "event.h"
  30 #include "tag.h"
  31 #include "window.h"
  32 #include "ewmh.h"
  33 #include "client.h"
  34 #include "widget.h"
  35 #include "titlebar.h"
  36 #include "keybinding.h"
  37 #include "keygrabber.h"
  38 #include "luaa.h"
  39 #include "systray.h"
  40 #include "screen.h"
  41 #include "layouts/floating.h"
  42 #include "common/atoms.h"
  43
  44 extern awesome_t globalconf;
  45
  46 /** Handle mouse button events.
  47  * \param c The client on which the event happened or NULL.
  48  * \param type Event type, press or release.
  49  * \param button Button number.
  50  * \param state Modkeys state.
  51  * \param buttons Buttons array to check for.
  52  */
  53 static void
  54 event_handle_mouse_button(client_t *c,
  55                           uint8_t type,
  56                           xcb_button_t button,
  57                           uint16_t state,
  58                           button_array_t *buttons)
  59 {
  60     for(int i = 0; i < buttons->len; i++)
  61         if(button == buttons->tab[i]->button
  62            && XUTIL_MASK_CLEAN(state) == buttons->tab[i]->mod)
  63         {
  64             if(c)
  65             {
  66                 luaA_client_userdata_new(globalconf.L, c);
  67                 luaA_dofunction(globalconf.L,
  68                                 type == XCB_BUTTON_PRESS ?
  69                                 buttons->tab[i]->press : buttons->tab[i]->release,
  70                                 1, 0);
  71             }
  72             else
  73                 luaA_dofunction(globalconf.L,
  74                                 type == XCB_BUTTON_PRESS ?
  75                                 buttons->tab[i]->press : buttons->tab[i]->release,
  76                                 0, 0);
  77         }
  78 }
  79
  80 /** Get a widget node from a wibox by coords.
  81  * \param Container position.
  82  * \param widgets The widget list.
  83  * \param width The container width.
  84  * \param height The container height.
  85  * \param x X coordinate of the widget.
  86  * \param y Y coordinate of the widget.
  87  * \return A widget node.
  88  */
  89 static widget_node_t *
  90 widget_getbycoords(position_t position, widget_node_array_t *widgets, int width, int height, int16_t *x, int16_t *y)
  91 {
  92     int tmp;
  93
  94     /* Need to transform coordinates like it was top/bottom */
  95     switch(position)
  96     {
  97       case Right:
  98         tmp = *y;
  99         *y = width - *x;
 100         *x = tmp;
 101         break;
 102       case Left:
 103         tmp = *y;
 104         *y = *x;
 105         *x = height - tmp;
 106         break;
 107       default:
 108         break;
 109     }
 110
 111     for(int i = 0; i < widgets->len; i++)
 112     {
 113         widget_node_t *w = &widgets->tab[i];
 114         if(w->widget->isvisible &&
 115            *x >= w->geometry.x && *x < w->geometry.x + w->geometry.width
 116            && *y >= w->geometry.y && *y < w->geometry.y + w->geometry.height)
 117             return w;
 118     }
 119
 120     return NULL;
 121 }
 122
 123 /** The button press event handler.
 124  * \param data The type of mouse event.
 125  * \param connection The connection to the X server.
 126  * \param ev The event.
 127  */
 128 static int
 129 event_handle_button(void *data, xcb_connection_t *connection, xcb_button_press_event_t *ev)
 130 {
 131     int screen;
 132     const int nb_screen = xcb_setup_roots_length(xcb_get_setup(connection));
 133     client_t *c;
 134     widget_node_t *w;
 135     wibox_t *wibox;
 136
 137     /* ev->state is
 138      * button status (8 bits) + modifiers status (8 bits)
 139      * we don't care for button status that we get, especially on release, so
 140      * drop them */
 141     ev->state &= 0x00ff;
 142
 143     if((wibox = wibox_getbywin(ev->event))
 144        || (wibox = wibox_getbywin(ev->child)))
 145     {
 146         /* If the wibox is child, then x,y are
 147          * relative to root window */
 148         if(wibox->sw.window == ev->child)
 149         {
 150             ev->event_x -= wibox->sw.geometry.x;
 151             ev->event_y -= wibox->sw.geometry.y;
 152         }
 153         if((w = widget_getbycoords(wibox->position, &wibox->widgets,
 154                                    wibox->sw.geometry.width,
 155                                    wibox->sw.geometry.height,
 156                                    &ev->event_x, &ev->event_y)))
 157             w->widget->button(w, ev, wibox->screen, wibox);
 158         /* return even if no widget match */
 159         return 0;
 160     }
 161
 162     if((c = client_getbywin(ev->event)))
 163     {
 164         event_handle_mouse_button(c, ev->response_type, ev->detail, ev->state, &c->buttons);
 165         xcb_allow_events(globalconf.connection,
 166                          XCB_ALLOW_REPLAY_POINTER,
 167                          XCB_CURRENT_TIME);
 168     }
 169     else
 170         for(screen = 0; screen < nb_screen; screen++)
 171             if(xutil_screen_get(connection, screen)->root == ev->event)
 172             {
 173                 event_handle_mouse_button(NULL, ev->response_type, ev->detail, ev->state, &globalconf.buttons);
 174                 return 0;
 175             }
 176
 177     return 0;
 178 }
 179
 180 /** The configure event handler.
 181  * \param data currently unused.
 182  * \param connection The connection to the X server.
 183  * \param ev The event.
 184  */
 185 static int
 186 event_handle_configurerequest(void *data __attribute__ ((unused)),
 187                               xcb_connection_t *connection, xcb_configure_request_event_t *ev)
 188 {
 189     client_t *c;
 190     area_t geometry;
 191
 192     if((c = client_getbywin(ev->window)))
 193     {
 194         geometry = c->geometry;
 195
 196         if(ev->value_mask & XCB_CONFIG_WINDOW_X)
 197             geometry.x = ev->x;
 198         if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
 199             geometry.y = ev->y;
 200         if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
 201             geometry.width = ev->width;
 202         if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
 203             geometry.height = ev->height;
 204
 205         if(geometry.x != c->geometry.x || geometry.y != c->geometry.y
 206            || geometry.width != c->geometry.width || geometry.height != c->geometry.height)
 207         {
 208             if(client_isfloating(c) || layout_get_current(c->screen) == layout_floating)
 209             {
 210                 client_resize(c, geometry, false);
 211                 if(client_hasstrut(c))
 212                     /* All the wiboxes (may) need to be repositioned */
 213                     for(int screen = 0; screen < globalconf.nscreen; screen++)
 214                         for(int i = 0; i < globalconf.screens[screen].wiboxes.len; i++)
 215                         {
 216                             wibox_t *s = globalconf.screens[screen].wiboxes.tab[i];
 217                             wibox_position_update(s);
 218                         }
 219             }
 220             else
 221             {
 222                 client_need_arrange(c);
 223                 /* If we do not resize the client, at least tell it that it
 224                  * has its new configuration. That fixes at least
 225                  * gnome-terminal */
 226                 window_configure(c->win, c->geometry, c->border);
 227             }
 228         }
 229         else
 230             window_configure(c->win, geometry, c->border);
 231     }
 232     else
 233     {
 234         uint16_t config_win_mask = 0;
 235         uint32_t config_win_vals[7];
 236         unsigned short i = 0;
 237
 238         if(ev->value_mask & XCB_CONFIG_WINDOW_X)
 239         {
 240             config_win_mask |= XCB_CONFIG_WINDOW_X;
 241             config_win_vals[i++] = ev->x;
 242         }
 243         if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
 244         {
 245             config_win_mask |= XCB_CONFIG_WINDOW_Y;
 246             config_win_vals[i++] = ev->y;
 247         }
 248         if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
 249         {
 250             config_win_mask |= XCB_CONFIG_WINDOW_WIDTH;
 251             config_win_vals[i++] = ev->width;
 252         }
 253         if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
 254         {
 255             config_win_mask |= XCB_CONFIG_WINDOW_HEIGHT;
 256             config_win_vals[i++] = ev->height;
 257         }
 258         if(ev->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH)
 259         {
 260             config_win_mask |= XCB_CONFIG_WINDOW_BORDER_WIDTH;
 261             config_win_vals[i++] = ev->border_width;
 262         }
 263         if(ev->value_mask & XCB_CONFIG_WINDOW_SIBLING)
 264         {
 265             config_win_mask |= XCB_CONFIG_WINDOW_SIBLING;
 266             config_win_vals[i++] = ev->sibling;
 267         }
 268         if(ev->value_mask & XCB_CONFIG_WINDOW_STACK_MODE)
 269         {
 270             config_win_mask |= XCB_CONFIG_WINDOW_STACK_MODE;
 271             config_win_vals[i++] = ev->stack_mode;
 272         }
 273
 274         xcb_configure_window(connection, ev->window, config_win_mask, config_win_vals);
 275     }
 276
 277     return 0;
 278 }
 279
 280 /** The configure notify event handler.
 281  * \param data currently unused.
 282  * \param connection The connection to the X server.
 283  * \param ev The event.
 284  */
 285 static int
 286 event_handle_configurenotify(void *data __attribute__ ((unused)),
 287                              xcb_connection_t *connection, xcb_configure_notify_event_t *ev)
 288 {
 289     int screen_nbr;
 290     const xcb_screen_t *screen;
 291
 292     for(screen_nbr = 0; screen_nbr < xcb_setup_roots_length(xcb_get_setup (connection)); screen_nbr++)
 293         if((screen = xutil_screen_get(connection, screen_nbr)) != NULL
 294            && ev->window == screen->root
 295            && (ev->width != screen->width_in_pixels
 296                || ev->height != screen->height_in_pixels))
 297             /* it's not that we panic, but restart */
 298             awesome_restart();
 299
 300     return 0;
 301 }
 302
 303 /** The destroy notify event handler.
 304  * \param data currently unused.
 305  * \param connection The connection to the X server.
 306  * \param ev The event.
 307  */
 308 static int
 309 event_handle_destroynotify(void *data __attribute__ ((unused)),
 310                            xcb_connection_t *connection __attribute__ ((unused)),
 311                            xcb_destroy_notify_event_t *ev)
 312 {
 313     client_t *c;
 314     xembed_window_t *emwin;
 315     int i;
 316
 317     if((c = client_getbywin(ev->window)))
 318         client_unmanage(c);
 319     else if((emwin = xembed_getbywin(globalconf.embedded, ev->event)))
 320     {
 321         xembed_window_list_detach(&globalconf.embedded, emwin);
 322         for(i = 0; i < globalconf.nscreen; i++)
 323             widget_invalidate_cache(i, WIDGET_CACHE_EMBEDDED);
 324     }
 325
 326     return 0;
 327 }
 328
 329 /** Handle a motion notify over widgets.
 330  * \param object The object.
 331  * \param mouse_over The pointer to the registered mouse over widget.
 332  * \param w The new widget the mouse is over.
 333  */
 334 static void
 335 event_handle_widget_motionnotify(void *object,
 336                                  widget_t **mouse_over,
 337                                  widget_node_t *w)
 338 {
 339     if(w->widget != *mouse_over)
 340     {
 341         if(*mouse_over)
 342         {
 343             /* call mouse leave function on old widget */
 344             luaA_wibox_userdata_new(globalconf.L, object);
 345             luaA_dofunction(globalconf.L, (*mouse_over)->mouse_leave, 1, 0);
 346         }
 347         if(w)
 348         {
 349             /* call mouse enter function on new widget and register it */
 350             *mouse_over = w->widget;
 351             luaA_wibox_userdata_new(globalconf.L, object);
 352             luaA_dofunction(globalconf.L, w->widget->mouse_enter, 1, 0);
 353         }
 354     }
 355 }
 356
 357 /** The motion notify event handler.
 358  * \param data currently unused.
 359  * \param connection The connection to the X server.
 360  * \param ev The event.
 361  */
 362 static int
 363 event_handle_motionnotify(void *data __attribute__ ((unused)),
 364                           xcb_connection_t *connection,
 365                           xcb_motion_notify_event_t *ev)
 366 {
 367     wibox_t *wibox = wibox_getbywin(ev->event);
 368     widget_node_t *w;
 369
 370     if(wibox
 371        && (w = widget_getbycoords(wibox->position, &wibox->widgets,
 372                                   wibox->sw.geometry.width,
 373                                   wibox->sw.geometry.height,
 374                                   &ev->event_x, &ev->event_y)))
 375     {
 376         globalconf.pointer_x = ev->root_x;
 377         globalconf.pointer_y = ev->root_y;
 378         event_handle_widget_motionnotify(wibox, &wibox->mouse_over, w);
 379     }
 380
 381     return 0;
 382 }
 383
 384 /** The leave notify event handler.
 385  * \param data currently unused.
 386  * \param connection The connection to the X server.
 387  * \param ev The event.
 388  */
 389 static int
 390 event_handle_leavenotify(void *data __attribute__ ((unused)),
 391                          xcb_connection_t *connection,
 392                          xcb_leave_notify_event_t *ev)
 393 {
 394     wibox_t *wibox = wibox_getbywin(ev->event);
 395
 396     if(wibox && wibox->mouse_over)
 397     {
 398         /* call mouse leave function on widget the mouse was over */
 399         luaA_wibox_userdata_new(globalconf.L, wibox);
 400         luaA_dofunction(globalconf.L, wibox->mouse_over->mouse_leave, 1, 0);
 401         wibox->mouse_over = NULL;
 402     }
 403
 404     return 0;
 405 }
 406
 407 /** The enter notify event handler.
 408  * \param data currently unused.
 409  * \param connection The connection to the X server.
 410  * \param ev The event.
 411  */
 412 static int
 413 event_handle_enternotify(void *data __attribute__ ((unused)),
 414                          xcb_connection_t *connection,
 415                          xcb_enter_notify_event_t *ev)
 416 {
 417     client_t *c;
 418     xembed_window_t *emwin;
 419     wibox_t *wibox;
 420     widget_node_t *w;
 421
 422     if(ev->mode != XCB_NOTIFY_MODE_NORMAL
 423        || (ev->root_x == globalconf.pointer_x
 424            && ev->root_y == globalconf.pointer_y))
 425         return 0;
 426
 427
 428     if((wibox = wibox_getbywin(ev->event))
 429        && (w = widget_getbycoords(wibox->position, &wibox->widgets,
 430                                   wibox->sw.geometry.width,
 431                                   wibox->sw.geometry.height,
 432                                   &ev->event_x, &ev->event_y)))
 433     {
 434         globalconf.pointer_x = ev->root_x;
 435         globalconf.pointer_y = ev->root_y;
 436         event_handle_widget_motionnotify(wibox, &wibox->mouse_over, w);
 437     }
 438     else if((c = client_getbytitlebarwin(ev->event))
 439        || (c = client_getbywin(ev->event)))
 440     {
 441         window_buttons_grab(c->win, ev->root, &c->buttons);
 442         /* The idea behind saving pointer_x and pointer_y is Bob Marley powered.
 443          * this will allow us top drop some EnterNotify events and thus not giving
 444          * focus to windows appering under the cursor without a cursor move */
 445         globalconf.pointer_x = ev->root_x;
 446         globalconf.pointer_y = ev->root_y;
 447
 448         luaA_client_userdata_new(globalconf.L, c);
 449         luaA_dofunction(globalconf.L, globalconf.hooks.mouse_enter, 1, 0);
 450     }
 451     else if((emwin = xembed_getbywin(globalconf.embedded, ev->event)))
 452         xcb_ungrab_button(globalconf.connection, XCB_BUTTON_INDEX_ANY,
 453                           xutil_screen_get(connection, emwin->phys_screen)->root,
 454                           XCB_BUTTON_MASK_ANY);
 455     else if(ev->event == ev->root)
 456         window_root_buttons_grab(ev->root);
 457
 458     return 0;
 459 }
 460
 461 /** The expose event handler.
 462  * \param data currently unused.
 463  * \param connection The connection to the X server.
 464  * \param ev The event.
 465  */
 466 static int
 467 event_handle_expose(void *data __attribute__ ((unused)),
 468                     xcb_connection_t *connection __attribute__ ((unused)),
 469                     xcb_expose_event_t *ev)
 470 {
 471     wibox_t *wibox = wibox_getbywin(ev->window);
 472
 473     if(wibox)
 474         simplewindow_refresh_pixmap_partial(&wibox->sw,
 475                                             ev->x, ev->y,
 476                                             ev->width, ev->height);
 477
 478     return 0;
 479 }
 480
 481 /** The key press event handler.
 482  * \param data currently unused.
 483  * \param connection The connection to the X server.
 484  * \param ev The event.
 485  */
 486 static int
 487 event_handle_keypress(void *data __attribute__ ((unused)),
 488                       xcb_connection_t *connection __attribute__ ((unused)),
 489                       xcb_key_press_event_t *ev)
 490 {
 491     if(globalconf.keygrabber != LUA_REFNIL)
 492     {
 493         lua_rawgeti(globalconf.L, LUA_REGISTRYINDEX, globalconf.keygrabber);
 494         if(keygrabber_handlekpress(globalconf.L, ev))
 495         {
 496             if(lua_pcall(globalconf.L, 2, 1, 0))
 497             {
 498                 warn("error running function: %s", lua_tostring(globalconf.L, -1));
 499                 keygrabber_ungrab();
 500             }
 501             else if(!lua_isboolean(globalconf.L, -1) || !lua_toboolean(globalconf.L, -1))
 502                 keygrabber_ungrab();
 503         }
 504         lua_pop(globalconf.L, 1);  /* pop returned value or function if not called */
 505     }
 506     else
 507     {
 508         keybinding_t *k = keybinding_find(ev);
 509         if (k && k->fct != LUA_REFNIL)
 510             luaA_dofunction(globalconf.L, k->fct, 0, 0);
 511     }
 512
 513     return 0;
 514 }
 515
 516 /** The map request event handler.
 517  * \param data currently unused.
 518  * \param connection The connection to the X server.
 519  * \param ev The event.
 520  */
 521 static int
 522 event_handle_maprequest(void *data __attribute__ ((unused)),
 523                         xcb_connection_t *connection, xcb_map_request_event_t *ev)
 524 {
 525     int phys_screen, screen = 0, ret = 0;
 526     client_t *c;
 527     xcb_get_window_attributes_cookie_t wa_c;
 528     xcb_get_window_attributes_reply_t *wa_r;
 529     xcb_query_pointer_cookie_t qp_c = { 0 };
 530     xcb_query_pointer_reply_t *qp_r = NULL;
 531     xcb_get_geometry_cookie_t geom_c;
 532     xcb_get_geometry_reply_t *geom_r;
 533
 534     wa_c = xcb_get_window_attributes_unchecked(connection, ev->window);
 535
 536     if(!(wa_r = xcb_get_window_attributes_reply(connection, wa_c, NULL)))
 537         return -1;
 538
 539     if(wa_r->override_redirect)
 540         goto bailout;
 541
 542     if(xembed_getbywin(globalconf.embedded, ev->window))
 543     {
 544         xcb_map_window(connection, ev->window);
 545         xembed_window_activate(connection, ev->window);
 546     }
 547     else if((c = client_getbywin(ev->window)))
 548     {
 549         /* Check that it may be visible, but not asked to be hidden */
 550         if(client_maybevisible(c, c->screen) && !c->ishidden)
 551         {
 552             client_setminimized(c, false);
 553             /* it will be raised, so just update ourself */
 554             client_raise(c);
 555         }
 556     }
 557     else
 558     {
 559         geom_c = xcb_get_geometry_unchecked(connection, ev->window);
 560
 561         if(globalconf.xinerama_is_active)
 562             qp_c = xcb_query_pointer_unchecked(connection,
 563                                                xutil_screen_get(globalconf.connection,
 564                                                                 globalconf.default_screen)->root);
 565
 566         if(!(geom_r = xcb_get_geometry_reply(connection, geom_c, NULL)))
 567         {
 568             if(globalconf.xinerama_is_active)
 569                 qp_r = xcb_query_pointer_reply(connection, qp_c, NULL);
 570             ret = -1;
 571             goto bailout;
 572         }
 573
 574
 575         phys_screen = xutil_root2screen(connection, geom_r->root);
 576
 577         if(globalconf.xinerama_is_active
 578            && (qp_r = xcb_query_pointer_reply(connection, qp_c, NULL)))
 579             screen = screen_getbycoord(screen, qp_r->root_x, qp_r->root_y);
 580         else
 581             screen = phys_screen;
 582
 583         client_manage(ev->window, geom_r, phys_screen, screen);
 584         p_delete(&geom_r);
 585     }
 586
 587 bailout:
 588     p_delete(&qp_r);
 589     p_delete(&wa_r);
 590     return ret;
 591 }
 592
 593 /** The unmap notify event handler.
 594  * \param data currently unused.
 595  * \param connection The connection to the X server.
 596  * \param ev The event.
 597  */
 598 static int
 599 event_handle_unmapnotify(void *data __attribute__ ((unused)),
 600                          xcb_connection_t *connection, xcb_unmap_notify_event_t *ev)
 601 {
 602     client_t *c;
 603     xembed_window_t *em;
 604     int i;
 605
 606     if((c = client_getbywin(ev->window)))
 607     {
 608         if(ev->event == xutil_screen_get(connection, c->phys_screen)->root
 609            && XCB_EVENT_SENT(ev)
 610            && window_state_get_reply(window_state_get_unchecked(c->win)) == XCB_WM_STATE_NORMAL)
 611             client_unmanage(c);
 612     }
 613     else if((em = xembed_getbywin(globalconf.embedded, ev->window)))
 614     {
 615         xembed_window_list_detach(&globalconf.embedded, em);
 616         for(i = 0; i < globalconf.nscreen; i++)
 617             widget_invalidate_cache(i, WIDGET_CACHE_EMBEDDED);
 618     }
 619
 620     return 0;
 621 }
 622
 623 /** The randr screen change notify event handler.
 624  * \param data currently unused.
 625  * \param connection The connection to the X server.
 626  * \param ev The event.
 627  */
 628 static int
 629 event_handle_randr_screen_change_notify(void *data __attribute__ ((unused)),
 630                                         xcb_connection_t *connection __attribute__ ((unused)),
 631                                         xcb_randr_screen_change_notify_event_t *ev)
 632 {
 633     if(!globalconf.have_randr)
 634         return -1;
 635
 636     /* Code  of  XRRUpdateConfiguration Xlib  function  ported to  XCB
 637      * (only the code relevant  to RRScreenChangeNotify) as the latter
 638      * doesn't provide this kind of function */
 639     if(ev->rotation & (XCB_RANDR_ROTATION_ROTATE_90 | XCB_RANDR_ROTATION_ROTATE_270))
 640         xcb_randr_set_screen_size(connection, ev->root, ev->height, ev->width,
 641                                   ev->mheight, ev->mwidth);
 642     else
 643         xcb_randr_set_screen_size(connection, ev->root, ev->width, ev->height,
 644                                   ev->mwidth, ev->mheight);
 645
 646     /* XRRUpdateConfiguration also executes the following instruction
 647      * but it's not useful because SubpixelOrder is not used at all at
 648      * the moment
 649      *
 650      * XRenderSetSubpixelOrder(dpy, snum, scevent->subpixel_order);
 651      */
 652
 653     awesome_restart();
 654
 655     return 0;
 656 }
 657
 658 /** The client message event handler.
 659  * \param data currently unused.
 660  * \param connection The connection to the X server.
 661  * \param ev The event.
 662  */
 663 static int
 664 event_handle_clientmessage(void *data __attribute__ ((unused)),
 665                            xcb_connection_t *connection,
 666                            xcb_client_message_event_t *ev)
 667 {
 668     client_t *c;
 669
 670     if(ev->type == WM_CHANGE_STATE)
 671     {
 672         if((c = client_getbywin(ev->window))
 673            && ev->format == 32
 674            && ev->data.data32[0] == XCB_WM_STATE_ICONIC)
 675             client_setminimized(c, true);
 676     }
 677     else if(ev->type == _XEMBED)
 678         return xembed_process_client_message(ev);
 679     else if(ev->type == _NET_SYSTEM_TRAY_OPCODE)
 680         return systray_process_client_message(ev);
 681     return ewmh_process_client_message(ev);
 682 }
 683
 684 /** The keymap change notify event handler.
 685  * \param data Unused data.
 686  * \param connection The connection to the X server.
 687  * \param ev The event.
 688  * \return Status code, 0 if everything's fine.
 689  */
 690 static int
 691 event_handle_mappingnotify(void *data,
 692                            xcb_connection_t *connection,
 693                            xcb_mapping_notify_event_t *ev)
 694 {
 695     xcb_get_modifier_mapping_cookie_t xmapping_cookie;
 696
 697     if(ev->request == XCB_MAPPING_MODIFIER
 698        || ev->request == XCB_MAPPING_KEYBOARD)
 699     {
 700         int nscreen = xcb_setup_roots_length(xcb_get_setup(connection));
 701         int phys_screen = 0;
 702
 703         /* Send the request to get the NumLock, ShiftLock and CapsLock masks */
 704         xmapping_cookie = xcb_get_modifier_mapping_unchecked(globalconf.connection);
 705
 706         /* Free and then allocate the key symbols */
 707         xcb_key_symbols_free(globalconf.keysyms);
 708         globalconf.keysyms = xcb_key_symbols_alloc(globalconf.connection);
 709
 710         /* Process the reply of previously sent mapping request */
 711         xutil_lock_mask_get(globalconf.connection, xmapping_cookie,
 712                             globalconf.keysyms, &globalconf.numlockmask,
 713                             &globalconf.shiftlockmask, &globalconf.capslockmask);
 714
 715         do
 716         {
 717             xcb_screen_t *s = xutil_screen_get(globalconf.connection, phys_screen);
 718             /* yes XCB_BUTTON_MASK_ANY is also for grab_key even if it's look
 719              * weird */
 720             xcb_ungrab_key(connection, XCB_GRAB_ANY, s->root, XCB_BUTTON_MASK_ANY);
 721             phys_screen++;
 722         } while(phys_screen < nscreen);
 723
 724         /* regrab everything */
 725         keybinding_array_t *arr = &globalconf.keys.by_sym;
 726         for(int i = 0; i < arr->len; i++)
 727             window_root_grabkey(arr->tab[i]);
 728
 729         arr = &globalconf.keys.by_code;
 730         for(int i = 0; i < arr->len; i++)
 731             window_root_grabkey(arr->tab[i]);
 732     }
 733
 734     return 0;
 735 }
 736
 737 static int
 738 event_handle_reparentnotify(void *data,
 739                            xcb_connection_t *connection,
 740                            xcb_reparent_notify_event_t *ev)
 741 {
 742     client_t *c;
 743
 744     if((c = client_getbywin(ev->window)))
 745         client_unmanage(c);
 746
 747     return 0;
 748 }
 749
 750 void a_xcb_set_event_handlers(void)
 751 {
 752     const xcb_query_extension_reply_t *randr_query;
 753
 754     xcb_event_set_button_press_handler(&globalconf.evenths, event_handle_button, NULL);
 755     xcb_event_set_button_release_handler(&globalconf.evenths, event_handle_button, NULL);
 756     xcb_event_set_configure_request_handler(&globalconf.evenths, event_handle_configurerequest, NULL);
 757     xcb_event_set_configure_notify_handler(&globalconf.evenths, event_handle_configurenotify, NULL);
 758     xcb_event_set_destroy_notify_handler(&globalconf.evenths, event_handle_destroynotify, NULL);
 759     xcb_event_set_enter_notify_handler(&globalconf.evenths, event_handle_enternotify, NULL);
 760     xcb_event_set_leave_notify_handler(&globalconf.evenths, event_handle_leavenotify, NULL);
 761     xcb_event_set_motion_notify_handler(&globalconf.evenths, event_handle_motionnotify, NULL);
 762     xcb_event_set_expose_handler(&globalconf.evenths, event_handle_expose, NULL);
 763     xcb_event_set_key_press_handler(&globalconf.evenths, event_handle_keypress, NULL);
 764     xcb_event_set_map_request_handler(&globalconf.evenths, event_handle_maprequest, NULL);
 765     xcb_event_set_unmap_notify_handler(&globalconf.evenths, event_handle_unmapnotify, NULL);
 766     xcb_event_set_client_message_handler(&globalconf.evenths, event_handle_clientmessage, NULL);
 767     xcb_event_set_mapping_notify_handler(&globalconf.evenths, event_handle_mappingnotify, NULL);
 768     xcb_event_set_reparent_notify_handler(&globalconf.evenths, event_handle_reparentnotify, NULL);
 769
 770     /* check for randr extension */
 771     randr_query = xcb_get_extension_data(globalconf.connection, &xcb_randr_id);
 772     if((globalconf.have_randr = randr_query->present))
 773         xcb_event_set_handler(&globalconf.evenths,
 774                               randr_query->first_event + XCB_RANDR_SCREEN_CHANGE_NOTIFY,
 775                               (xcb_generic_event_handler_t) event_handle_randr_screen_change_notify,
 776                               NULL);
 777
 778 }
 779
 780 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80