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 "key.h"
  37 #include "keygrabber.h"
  38 #include "mousegrabber.h"
  39 #include "luaa.h"
  40 #include "systray.h"
  41 #include "screen.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             switch(type)
  64             {
  65               case XCB_BUTTON_PRESS:
  66                 if(buttons->tab[i]->press != LUA_REFNIL)
  67                 {
  68                     if(c)
  69                     {
  70                         luaA_client_userdata_new(globalconf.L, c);
  71                         luaA_dofunction(globalconf.L, buttons->tab[i]->press, 1, 0);
  72                     }
  73                     else
  74                         luaA_dofunction(globalconf.L, buttons->tab[i]->press, 0, 0);
  75                 }
  76                 break;
  77               case XCB_BUTTON_RELEASE:
  78                 if(buttons->tab[i]->release != LUA_REFNIL)
  79                 {
  80                     if(c)
  81                     {
  82                         luaA_client_userdata_new(globalconf.L, c);
  83                         luaA_dofunction(globalconf.L, buttons->tab[i]->release, 1, 0);
  84                     }
  85                     else
  86                         luaA_dofunction(globalconf.L, buttons->tab[i]->release, 0, 0);
  87                 }
  88                 break;
  89             }
  90 }
  91
  92 /** Handle an event with mouse grabber if needed
  93  * \param x The x coordinate.
  94  * \param y The y coordinate.
  95  * \param mask The mask buttons.
  96  */
  97 static void
  98 event_handle_mousegrabber(int x, int y, uint16_t mask)
  99 {
 100     if(globalconf.mousegrabber != LUA_REFNIL)
 101     {
 102         lua_rawgeti(globalconf.L, LUA_REGISTRYINDEX, globalconf.mousegrabber);
 103         mousegrabber_handleevent(globalconf.L, x, y, mask);
 104         if(lua_pcall(globalconf.L, 1, 1, 0))
 105         {
 106             warn("error running function: %s", lua_tostring(globalconf.L, -1));
 107             luaA_mousegrabber_stop(globalconf.L);
 108         }
 109         else if(!lua_isboolean(globalconf.L, -1) || !lua_toboolean(globalconf.L, -1))
 110             luaA_mousegrabber_stop(globalconf.L);
 111         lua_pop(globalconf.L, 1);  /* pop returned value */
 112     }
 113 }
 114
 115 /** The button press event handler.
 116  * \param data The type of mouse event.
 117  * \param connection The connection to the X server.
 118  * \param ev The event.
 119  */
 120 static int
 121 event_handle_button(void *data, xcb_connection_t *connection, xcb_button_press_event_t *ev)
 122 {
 123     int screen;
 124     const int nb_screen = xcb_setup_roots_length(xcb_get_setup(connection));
 125     client_t *c;
 126     widget_t *w;
 127     wibox_t *wibox;
 128
 129     /* ev->state is
 130      * button status (8 bits) + modifiers status (8 bits)
 131      * we don't care for button status that we get, especially on release, so
 132      * drop them */
 133     ev->state &= 0x00ff;
 134
 135     event_handle_mousegrabber(ev->root_x, ev->root_y, ev->state);
 136
 137     if((wibox = wibox_getbywin(ev->event))
 138        || (wibox = wibox_getbywin(ev->child)))
 139     {
 140         /* If the wibox is child, then x,y are
 141          * relative to root window */
 142         if(wibox->sw.window == ev->child)
 143         {
 144             ev->event_x -= wibox->sw.geometry.x;
 145             ev->event_y -= wibox->sw.geometry.y;
 146         }
 147
 148         /* check if we match a binding on the wibox */
 149         button_array_t *b = &wibox->buttons;
 150
 151         for(int i = 0; i < b->len; i++)
 152             if(ev->detail == b->tab[i]->button
 153                && XUTIL_MASK_CLEAN(ev->state) == b->tab[i]->mod)
 154                 switch(ev->response_type)
 155                 {
 156                   case XCB_BUTTON_PRESS:
 157                     if(b->tab[i]->press != LUA_REFNIL)
 158                     {
 159                         luaA_wibox_userdata_new(globalconf.L, wibox);
 160                         luaA_dofunction(globalconf.L, b->tab[i]->press, 1, 0);
 161                     }
 162                     break;
 163                   case XCB_BUTTON_RELEASE:
 164                     if(b->tab[i]->release != LUA_REFNIL)
 165                     {
 166                         luaA_wibox_userdata_new(globalconf.L, wibox);
 167                         luaA_dofunction(globalconf.L, b->tab[i]->release, 1, 0);
 168                     }
 169                     break;
 170                 }
 171
 172         /* then try to match a widget binding */
 173         if((w = widget_getbycoords(wibox->position, &wibox->widgets,
 174                                    wibox->sw.geometry.width,
 175                                    wibox->sw.geometry.height,
 176                                    &ev->event_x, &ev->event_y)))
 177         {
 178             b = &w->buttons;
 179
 180             for(int i = 0; i < b->len; i++)
 181                 if(ev->detail == b->tab[i]->button
 182                    && XUTIL_MASK_CLEAN(ev->state) == b->tab[i]->mod)
 183                     switch(ev->response_type)
 184                     {
 185                       case XCB_BUTTON_PRESS:
 186                         if(b->tab[i]->press != LUA_REFNIL)
 187                         {
 188                             luaA_wibox_userdata_new(globalconf.L, wibox);
 189                             luaA_dofunction(globalconf.L, b->tab[i]->press, 1, 0);
 190                         }
 191                         break;
 192                       case XCB_BUTTON_RELEASE:
 193                         if(b->tab[i]->release != LUA_REFNIL)
 194                         {
 195                             luaA_wibox_userdata_new(globalconf.L, wibox);
 196                             luaA_dofunction(globalconf.L, b->tab[i]->release, 1, 0);
 197                         }
 198                         break;
 199                     }
 200         }
 201         /* return even if no widget match */
 202         return 0;
 203     }
 204
 205     if((c = client_getbywin(ev->event)))
 206     {
 207         event_handle_mouse_button(c, ev->response_type, ev->detail, ev->state, &c->buttons);
 208         xcb_allow_events(globalconf.connection,
 209                          XCB_ALLOW_REPLAY_POINTER,
 210                          XCB_CURRENT_TIME);
 211     }
 212     else
 213         for(screen = 0; screen < nb_screen; screen++)
 214             if(xutil_screen_get(connection, screen)->root == ev->event)
 215             {
 216                 event_handle_mouse_button(NULL, ev->response_type, ev->detail, ev->state, &globalconf.buttons);
 217                 return 0;
 218             }
 219
 220     return 0;
 221 }
 222
 223 /** The configure event handler.
 224  * \param data currently unused.
 225  * \param connection The connection to the X server.
 226  * \param ev The event.
 227  */
 228 static int
 229 event_handle_configurerequest(void *data __attribute__ ((unused)),
 230                               xcb_connection_t *connection, xcb_configure_request_event_t *ev)
 231 {
 232     client_t *c;
 233     area_t geometry;
 234
 235     if((c = client_getbywin(ev->window)))
 236     {
 237         geometry = c->geometry;
 238
 239         if(ev->value_mask & XCB_CONFIG_WINDOW_X)
 240             geometry.x = ev->x;
 241         if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
 242             geometry.y = ev->y;
 243         if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
 244             geometry.width = ev->width;
 245         if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
 246             geometry.height = ev->height;
 247
 248         if(geometry.x != c->geometry.x || geometry.y != c->geometry.y
 249            || geometry.width != c->geometry.width || geometry.height != c->geometry.height)
 250         {
 251             client_resize(c, geometry, false);
 252             /* All the wiboxes (may) need to be repositioned. */
 253             if(client_hasstrut(c))
 254                 wibox_update_positions();
 255             client_need_arrange(c);
 256         }
 257         else
 258             window_configure(c->win, geometry, c->border);
 259     }
 260     else
 261     {
 262         uint16_t config_win_mask = 0;
 263         uint32_t config_win_vals[7];
 264         unsigned short i = 0;
 265
 266         if(ev->value_mask & XCB_CONFIG_WINDOW_X)
 267         {
 268             config_win_mask |= XCB_CONFIG_WINDOW_X;
 269             config_win_vals[i++] = ev->x;
 270         }
 271         if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
 272         {
 273             config_win_mask |= XCB_CONFIG_WINDOW_Y;
 274             config_win_vals[i++] = ev->y;
 275         }
 276         if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
 277         {
 278             config_win_mask |= XCB_CONFIG_WINDOW_WIDTH;
 279             config_win_vals[i++] = ev->width;
 280         }
 281         if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
 282         {
 283             config_win_mask |= XCB_CONFIG_WINDOW_HEIGHT;
 284             config_win_vals[i++] = ev->height;
 285         }
 286         if(ev->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH)
 287         {
 288             config_win_mask |= XCB_CONFIG_WINDOW_BORDER_WIDTH;
 289             config_win_vals[i++] = ev->border_width;
 290         }
 291         if(ev->value_mask & XCB_CONFIG_WINDOW_SIBLING)
 292         {
 293             config_win_mask |= XCB_CONFIG_WINDOW_SIBLING;
 294             config_win_vals[i++] = ev->sibling;
 295         }
 296         if(ev->value_mask & XCB_CONFIG_WINDOW_STACK_MODE)
 297         {
 298             config_win_mask |= XCB_CONFIG_WINDOW_STACK_MODE;
 299             config_win_vals[i++] = ev->stack_mode;
 300         }
 301
 302         xcb_configure_window(connection, ev->window, config_win_mask, config_win_vals);
 303     }
 304
 305     return 0;
 306 }
 307
 308 /** The configure notify event handler.
 309  * \param data currently unused.
 310  * \param connection The connection to the X server.
 311  * \param ev The event.
 312  */
 313 static int
 314 event_handle_configurenotify(void *data __attribute__ ((unused)),
 315                              xcb_connection_t *connection, xcb_configure_notify_event_t *ev)
 316 {
 317     int screen_nbr;
 318     const xcb_screen_t *screen;
 319
 320     for(screen_nbr = 0; screen_nbr < xcb_setup_roots_length(xcb_get_setup (connection)); screen_nbr++)
 321         if((screen = xutil_screen_get(connection, screen_nbr)) != NULL
 322            && ev->window == screen->root
 323            && (ev->width != screen->width_in_pixels
 324                || ev->height != screen->height_in_pixels))
 325             /* it's not that we panic, but restart */
 326             awesome_restart();
 327
 328     return 0;
 329 }
 330
 331 /** The destroy notify event handler.
 332  * \param data currently unused.
 333  * \param connection The connection to the X server.
 334  * \param ev The event.
 335  */
 336 static int
 337 event_handle_destroynotify(void *data __attribute__ ((unused)),
 338                            xcb_connection_t *connection __attribute__ ((unused)),
 339                            xcb_destroy_notify_event_t *ev)
 340 {
 341     client_t *c;
 342
 343     if((c = client_getbywin(ev->window)))
 344         client_unmanage(c);
 345     else
 346         for(int i = 0; i < globalconf.embedded.len; i++)
 347             if(globalconf.embedded.tab[i].win == ev->window)
 348             {
 349                 xembed_window_array_take(&globalconf.embedded, i);
 350                 for(int j = 0; j < globalconf.nscreen; j++)
 351                     widget_invalidate_bytype(j, widget_systray);
 352             }
 353
 354     return 0;
 355 }
 356
 357 /** Handle a motion notify over widgets.
 358  * \param object The object.
 359  * \param mouse_over The pointer to the registered mouse over widget.
 360  * \param widget The new widget the mouse is over.
 361  */
 362 static void
 363 event_handle_widget_motionnotify(void *object,
 364                                  widget_t **mouse_over,
 365                                  widget_t *widget)
 366 {
 367     if(widget != *mouse_over)
 368     {
 369         if(*mouse_over)
 370         {
 371             if((*mouse_over)->mouse_leave != LUA_REFNIL)
 372             {
 373                 /* call mouse leave function on old widget */
 374                 luaA_wibox_userdata_new(globalconf.L, object);
 375                 luaA_dofunction(globalconf.L, (*mouse_over)->mouse_leave, 1, 0);
 376             }
 377         }
 378         if(widget)
 379         {
 380             /* call mouse enter function on new widget and register it */
 381             *mouse_over = widget;
 382             if(widget->mouse_enter != LUA_REFNIL)
 383             {
 384                 luaA_wibox_userdata_new(globalconf.L, object);
 385                 luaA_dofunction(globalconf.L, widget->mouse_enter, 1, 0);
 386             }
 387         }
 388     }
 389 }
 390
 391 /** The motion notify event handler.
 392  * \param data currently unused.
 393  * \param connection The connection to the X server.
 394  * \param ev The event.
 395  */
 396 static int
 397 event_handle_motionnotify(void *data __attribute__ ((unused)),
 398                           xcb_connection_t *connection,
 399                           xcb_motion_notify_event_t *ev)
 400 {
 401     wibox_t *wibox = wibox_getbywin(ev->event);
 402     widget_t *w;
 403
 404     event_handle_mousegrabber(ev->root_x, ev->root_y, ev->state);
 405
 406     if(wibox
 407        && (w = widget_getbycoords(wibox->position, &wibox->widgets,
 408                                   wibox->sw.geometry.width,
 409                                   wibox->sw.geometry.height,
 410                                   &ev->event_x, &ev->event_y)))
 411     {
 412         globalconf.pointer_x = ev->root_x;
 413         globalconf.pointer_y = ev->root_y;
 414         event_handle_widget_motionnotify(wibox, &wibox->mouse_over, w);
 415     }
 416
 417     return 0;
 418 }
 419
 420 /** The leave notify event handler.
 421  * \param data currently unused.
 422  * \param connection The connection to the X server.
 423  * \param ev The event.
 424  */
 425 static int
 426 event_handle_leavenotify(void *data __attribute__ ((unused)),
 427                          xcb_connection_t *connection,
 428                          xcb_leave_notify_event_t *ev)
 429 {
 430     wibox_t *wibox;
 431     client_t *c = client_getbywin(ev->event);
 432
 433     if(c)
 434     {
 435         if(globalconf.hooks.mouse_leave != LUA_REFNIL)
 436         {
 437             luaA_client_userdata_new(globalconf.L, c);
 438             luaA_dofunction(globalconf.L, globalconf.hooks.mouse_leave, 1, 0);
 439         }
 440     }
 441     else if((wibox = wibox_getbywin(ev->event)))
 442     {
 443         if(wibox->mouse_over)
 444         {
 445             if(wibox->mouse_over->mouse_leave != LUA_REFNIL)
 446             {
 447                 /* call mouse leave function on widget the mouse was over */
 448                 luaA_wibox_userdata_new(globalconf.L, wibox);
 449                 luaA_dofunction(globalconf.L, wibox->mouse_over->mouse_leave, 1, 0);
 450             }
 451             wibox->mouse_over = NULL;
 452         }
 453     }
 454
 455     return 0;
 456 }
 457
 458 /** The enter notify event handler.
 459  * \param data currently unused.
 460  * \param connection The connection to the X server.
 461  * \param ev The event.
 462  */
 463 static int
 464 event_handle_enternotify(void *data __attribute__ ((unused)),
 465                          xcb_connection_t *connection,
 466                          xcb_enter_notify_event_t *ev)
 467 {
 468     client_t *c;
 469     xembed_window_t *emwin;
 470     wibox_t *wibox;
 471     widget_t *w;
 472
 473     if(ev->mode != XCB_NOTIFY_MODE_NORMAL
 474        || (ev->root_x == globalconf.pointer_x
 475            && ev->root_y == globalconf.pointer_y))
 476         return 0;
 477
 478
 479     if((wibox = wibox_getbywin(ev->event))
 480        && (w = widget_getbycoords(wibox->position, &wibox->widgets,
 481                                   wibox->sw.geometry.width,
 482                                   wibox->sw.geometry.height,
 483                                   &ev->event_x, &ev->event_y)))
 484     {
 485         globalconf.pointer_x = ev->root_x;
 486         globalconf.pointer_y = ev->root_y;
 487         event_handle_widget_motionnotify(wibox, &wibox->mouse_over, w);
 488     }
 489     else if((c = client_getbytitlebarwin(ev->event))
 490        || (c = client_getbywin(ev->event)))
 491     {
 492         window_buttons_grab(c->win, ev->root, &c->buttons);
 493         /* The idea behind saving pointer_x and pointer_y is Bob Marley powered.
 494          * this will allow us top drop some EnterNotify events and thus not giving
 495          * focus to windows appering under the cursor without a cursor move */
 496         globalconf.pointer_x = ev->root_x;
 497         globalconf.pointer_y = ev->root_y;
 498
 499         if(globalconf.hooks.mouse_enter != LUA_REFNIL)
 500         {
 501             luaA_client_userdata_new(globalconf.L, c);
 502             luaA_dofunction(globalconf.L, globalconf.hooks.mouse_enter, 1, 0);
 503         }
 504     }
 505     else if((emwin = xembed_getbywin(&globalconf.embedded, ev->event)))
 506         xcb_ungrab_button(globalconf.connection, XCB_BUTTON_INDEX_ANY,
 507                           xutil_screen_get(connection, emwin->phys_screen)->root,
 508                           XCB_BUTTON_MASK_ANY);
 509     else if(ev->event == ev->root)
 510         window_root_buttons_grab(ev->root);
 511
 512     return 0;
 513 }
 514
 515 /** The expose event handler.
 516  * \param data currently unused.
 517  * \param connection The connection to the X server.
 518  * \param ev The event.
 519  */
 520 static int
 521 event_handle_expose(void *data __attribute__ ((unused)),
 522                     xcb_connection_t *connection __attribute__ ((unused)),
 523                     xcb_expose_event_t *ev)
 524 {
 525     wibox_t *wibox = wibox_getbywin(ev->window);
 526
 527     if(wibox)
 528         simplewindow_refresh_pixmap_partial(&wibox->sw,
 529                                             ev->x, ev->y,
 530                                             ev->width, ev->height);
 531
 532     return 0;
 533 }
 534
 535 /** The key press event handler.
 536  * \param data currently unused.
 537  * \param connection The connection to the X server.
 538  * \param ev The event.
 539  */
 540 static int
 541 event_handle_key(void *data __attribute__ ((unused)),
 542                  xcb_connection_t *connection __attribute__ ((unused)),
 543                  xcb_key_press_event_t *ev)
 544 {
 545     if(globalconf.keygrabber != LUA_REFNIL)
 546     {
 547         lua_rawgeti(globalconf.L, LUA_REGISTRYINDEX, globalconf.keygrabber);
 548         if(keygrabber_handlekpress(globalconf.L, ev))
 549         {
 550             if(lua_pcall(globalconf.L, 3, 1, 0))
 551             {
 552                 warn("error running function: %s", lua_tostring(globalconf.L, -1));
 553                 luaA_keygrabber_stop(globalconf.L);
 554             }
 555             else if(!lua_isboolean(globalconf.L, -1) || !lua_toboolean(globalconf.L, -1))
 556                 luaA_keygrabber_stop(globalconf.L);
 557         }
 558         lua_pop(globalconf.L, 1);  /* pop returned value or function if not called */
 559     }
 560     else
 561     {
 562         keyb_t *k = key_find(ev);
 563
 564         if(k)
 565             switch(ev->response_type)
 566             {
 567               case XCB_KEY_PRESS:
 568                 if(k->press != LUA_REFNIL)
 569                     luaA_dofunction(globalconf.L, k->press, 0, 0);
 570                 break;
 571               case XCB_KEY_RELEASE:
 572                 if(k->release != LUA_REFNIL)
 573                     luaA_dofunction(globalconf.L, k->release, 0, 0);
 574                 break;
 575             }
 576     }
 577
 578     return 0;
 579 }
 580
 581 /** The map request event handler.
 582  * \param data currently unused.
 583  * \param connection The connection to the X server.
 584  * \param ev The event.
 585  */
 586 static int
 587 event_handle_maprequest(void *data __attribute__ ((unused)),
 588                         xcb_connection_t *connection, xcb_map_request_event_t *ev)
 589 {
 590     int phys_screen, screen = 0, ret = 0;
 591     client_t *c;
 592     xcb_get_window_attributes_cookie_t wa_c;
 593     xcb_get_window_attributes_reply_t *wa_r;
 594     xcb_query_pointer_cookie_t qp_c = { 0 };
 595     xcb_query_pointer_reply_t *qp_r = NULL;
 596     xcb_get_geometry_cookie_t geom_c;
 597     xcb_get_geometry_reply_t *geom_r;
 598
 599     wa_c = xcb_get_window_attributes_unchecked(connection, ev->window);
 600
 601     if(!(wa_r = xcb_get_window_attributes_reply(connection, wa_c, NULL)))
 602         return -1;
 603
 604     if(wa_r->override_redirect)
 605         goto bailout;
 606
 607     if(xembed_getbywin(&globalconf.embedded, ev->window))
 608     {
 609         xcb_map_window(connection, ev->window);
 610         xembed_window_activate(connection, ev->window);
 611     }
 612     else if((c = client_getbywin(ev->window)))
 613     {
 614         /* Check that it may be visible, but not asked to be hidden */
 615         if(client_maybevisible(c, c->screen) && !c->ishidden)
 616         {
 617             client_setminimized(c, false);
 618             /* it will be raised, so just update ourself */
 619             client_raise(c);
 620         }
 621     }
 622     else
 623     {
 624         geom_c = xcb_get_geometry_unchecked(connection, ev->window);
 625
 626         if(globalconf.xinerama_is_active)
 627             qp_c = xcb_query_pointer_unchecked(connection,
 628                                                xutil_screen_get(globalconf.connection,
 629                                                                 globalconf.default_screen)->root);
 630
 631         if(!(geom_r = xcb_get_geometry_reply(connection, geom_c, NULL)))
 632         {
 633             if(globalconf.xinerama_is_active)
 634                 qp_r = xcb_query_pointer_reply(connection, qp_c, NULL);
 635             ret = -1;
 636             goto bailout;
 637         }
 638
 639
 640         phys_screen = xutil_root2screen(connection, geom_r->root);
 641
 642         if(globalconf.xinerama_is_active
 643            && (qp_r = xcb_query_pointer_reply(connection, qp_c, NULL)))
 644             screen = screen_getbycoord(screen, qp_r->root_x, qp_r->root_y);
 645         else
 646             screen = phys_screen;
 647
 648         client_manage(ev->window, geom_r, phys_screen, screen);
 649         p_delete(&geom_r);
 650     }
 651
 652 bailout:
 653     p_delete(&qp_r);
 654     p_delete(&wa_r);
 655     return ret;
 656 }
 657
 658 /** The unmap notify 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_unmapnotify(void *data __attribute__ ((unused)),
 665                          xcb_connection_t *connection, xcb_unmap_notify_event_t *ev)
 666 {
 667     client_t *c;
 668
 669     if((c = client_getbywin(ev->window)))
 670     {
 671         if(ev->event == xutil_screen_get(connection, c->phys_screen)->root
 672            && XCB_EVENT_SENT(ev)
 673            && window_state_get_reply(window_state_get_unchecked(c->win)) == XCB_WM_STATE_NORMAL)
 674             client_unmanage(c);
 675     }
 676     else
 677         for(int i = 0; i < globalconf.embedded.len; i++)
 678             if(globalconf.embedded.tab[i].win == ev->window)
 679             {
 680                 xembed_window_array_take(&globalconf.embedded, i);
 681                 for(int j = 0; j < globalconf.nscreen; j++)
 682                     widget_invalidate_bytype(j, widget_systray);
 683             }
 684
 685     return 0;
 686 }
 687
 688 /** The randr screen change notify event handler.
 689  * \param data currently unused.
 690  * \param connection The connection to the X server.
 691  * \param ev The event.
 692  */
 693 static int
 694 event_handle_randr_screen_change_notify(void *data __attribute__ ((unused)),
 695                                         xcb_connection_t *connection __attribute__ ((unused)),
 696                                         xcb_randr_screen_change_notify_event_t *ev)
 697 {
 698     if(!globalconf.have_randr)
 699         return -1;
 700
 701     /* Code  of  XRRUpdateConfiguration Xlib  function  ported to  XCB
 702      * (only the code relevant  to RRScreenChangeNotify) as the latter
 703      * doesn't provide this kind of function */
 704     if(ev->rotation & (XCB_RANDR_ROTATION_ROTATE_90 | XCB_RANDR_ROTATION_ROTATE_270))
 705         xcb_randr_set_screen_size(connection, ev->root, ev->height, ev->width,
 706                                   ev->mheight, ev->mwidth);
 707     else
 708         xcb_randr_set_screen_size(connection, ev->root, ev->width, ev->height,
 709                                   ev->mwidth, ev->mheight);
 710
 711     /* XRRUpdateConfiguration also executes the following instruction
 712      * but it's not useful because SubpixelOrder is not used at all at
 713      * the moment
 714      *
 715      * XRenderSetSubpixelOrder(dpy, snum, scevent->subpixel_order);
 716      */
 717
 718     awesome_restart();
 719
 720     return 0;
 721 }
 722
 723 /** The client message event handler.
 724  * \param data currently unused.
 725  * \param connection The connection to the X server.
 726  * \param ev The event.
 727  */
 728 static int
 729 event_handle_clientmessage(void *data __attribute__ ((unused)),
 730                            xcb_connection_t *connection,
 731                            xcb_client_message_event_t *ev)
 732 {
 733     client_t *c;
 734
 735     if(ev->type == WM_CHANGE_STATE)
 736     {
 737         if((c = client_getbywin(ev->window))
 738            && ev->format == 32
 739            && ev->data.data32[0] == XCB_WM_STATE_ICONIC)
 740             client_setminimized(c, true);
 741     }
 742     else if(ev->type == _XEMBED)
 743         return xembed_process_client_message(ev);
 744     else if(ev->type == _NET_SYSTEM_TRAY_OPCODE)
 745         return systray_process_client_message(ev);
 746     return ewmh_process_client_message(ev);
 747 }
 748
 749 /** The keymap change notify event handler.
 750  * \param data Unused data.
 751  * \param connection The connection to the X server.
 752  * \param ev The event.
 753  * \return Status code, 0 if everything's fine.
 754  */
 755 static int
 756 event_handle_mappingnotify(void *data,
 757                            xcb_connection_t *connection,
 758                            xcb_mapping_notify_event_t *ev)
 759 {
 760     xcb_get_modifier_mapping_cookie_t xmapping_cookie;
 761
 762     if(ev->request == XCB_MAPPING_MODIFIER
 763        || ev->request == XCB_MAPPING_KEYBOARD)
 764     {
 765         int nscreen = xcb_setup_roots_length(xcb_get_setup(connection));
 766         int phys_screen = 0;
 767
 768         /* Send the request to get the NumLock, ShiftLock and CapsLock masks */
 769         xmapping_cookie = xcb_get_modifier_mapping_unchecked(globalconf.connection);
 770
 771         /* Free and then allocate the key symbols */
 772         xcb_key_symbols_free(globalconf.keysyms);
 773         globalconf.keysyms = xcb_key_symbols_alloc(globalconf.connection);
 774
 775         /* Process the reply of previously sent mapping request */
 776         xutil_lock_mask_get(globalconf.connection, xmapping_cookie,
 777                             globalconf.keysyms, &globalconf.numlockmask,
 778                             &globalconf.shiftlockmask, &globalconf.capslockmask);
 779
 780         do
 781         {
 782             xcb_screen_t *s = xutil_screen_get(globalconf.connection, phys_screen);
 783             /* yes XCB_BUTTON_MASK_ANY is also for grab_key even if it's look
 784              * weird */
 785             xcb_ungrab_key(connection, XCB_GRAB_ANY, s->root, XCB_BUTTON_MASK_ANY);
 786             phys_screen++;
 787         } while(phys_screen < nscreen);
 788
 789         /* regrab everything */
 790         key_array_t *arr = &globalconf.keys.by_sym;
 791         for(int i = 0; i < arr->len; i++)
 792             window_root_grabkey(arr->tab[i]);
 793
 794         arr = &globalconf.keys.by_code;
 795         for(int i = 0; i < arr->len; i++)
 796             window_root_grabkey(arr->tab[i]);
 797     }
 798
 799     return 0;
 800 }
 801
 802 static int
 803 event_handle_reparentnotify(void *data,
 804                            xcb_connection_t *connection,
 805                            xcb_reparent_notify_event_t *ev)
 806 {
 807     client_t *c;
 808
 809     if((c = client_getbywin(ev->window)))
 810         client_unmanage(c);
 811
 812     return 0;
 813 }
 814
 815 void a_xcb_set_event_handlers(void)
 816 {
 817     const xcb_query_extension_reply_t *randr_query;
 818
 819     xcb_event_set_button_press_handler(&globalconf.evenths, event_handle_button, NULL);
 820     xcb_event_set_button_release_handler(&globalconf.evenths, event_handle_button, NULL);
 821     xcb_event_set_configure_request_handler(&globalconf.evenths, event_handle_configurerequest, NULL);
 822     xcb_event_set_configure_notify_handler(&globalconf.evenths, event_handle_configurenotify, NULL);
 823     xcb_event_set_destroy_notify_handler(&globalconf.evenths, event_handle_destroynotify, NULL);
 824     xcb_event_set_enter_notify_handler(&globalconf.evenths, event_handle_enternotify, NULL);
 825     xcb_event_set_leave_notify_handler(&globalconf.evenths, event_handle_leavenotify, NULL);
 826     xcb_event_set_motion_notify_handler(&globalconf.evenths, event_handle_motionnotify, NULL);
 827     xcb_event_set_expose_handler(&globalconf.evenths, event_handle_expose, NULL);
 828     xcb_event_set_key_press_handler(&globalconf.evenths, event_handle_key, NULL);
 829     xcb_event_set_key_release_handler(&globalconf.evenths, event_handle_key, NULL);
 830     xcb_event_set_map_request_handler(&globalconf.evenths, event_handle_maprequest, NULL);
 831     xcb_event_set_unmap_notify_handler(&globalconf.evenths, event_handle_unmapnotify, NULL);
 832     xcb_event_set_client_message_handler(&globalconf.evenths, event_handle_clientmessage, NULL);
 833     xcb_event_set_mapping_notify_handler(&globalconf.evenths, event_handle_mappingnotify, NULL);
 834     xcb_event_set_reparent_notify_handler(&globalconf.evenths, event_handle_reparentnotify, NULL);
 835
 836     /* check for randr extension */
 837     randr_query = xcb_get_extension_data(globalconf.connection, &xcb_randr_id);
 838     if((globalconf.have_randr = randr_query->present))
 839         xcb_event_set_handler(&globalconf.evenths,
 840                               randr_query->first_event + XCB_RANDR_SCREEN_CHANGE_NOTIFY,
 841                               (xcb_generic_event_handler_t) event_handle_randr_screen_change_notify,
 842                               NULL);
 843
 844 }
 845
 846 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80