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             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 /** Get a widget node from a wibox by coords.
  93  * \param Container position.
  94  * \param widgets The widget list.
  95  * \param width The container width.
  96  * \param height The container height.
  97  * \param x X coordinate of the widget.
  98  * \param y Y coordinate of the widget.
  99  * \return A widget.
 100  */
 101 static widget_t *
 102 widget_getbycoords(position_t position, widget_node_array_t *widgets,
 103                    int width, int height, int16_t *x, int16_t *y)
 104 {
 105     int tmp;
 106
 107     /* Need to transform coordinates like it was top/bottom */
 108     switch(position)
 109     {
 110       case Right:
 111         tmp = *y;
 112         *y = width - *x;
 113         *x = tmp;
 114         break;
 115       case Left:
 116         tmp = *y;
 117         *y = *x;
 118         *x = height - tmp;
 119         break;
 120       default:
 121         break;
 122     }
 123
 124     for(int i = 0; i < widgets->len; i++)
 125     {
 126         widget_node_t *w = &widgets->tab[i];
 127         if(w->widget->isvisible &&
 128            *x >= w->geometry.x && *x < w->geometry.x + w->geometry.width
 129            && *y >= w->geometry.y && *y < w->geometry.y + w->geometry.height)
 130             return w->widget;
 131     }
 132
 133     return NULL;
 134 }
 135
 136 /** The button press event handler.
 137  * \param data The type of mouse event.
 138  * \param connection The connection to the X server.
 139  * \param ev The event.
 140  */
 141 static int
 142 event_handle_button(void *data, xcb_connection_t *connection, xcb_button_press_event_t *ev)
 143 {
 144     int screen;
 145     const int nb_screen = xcb_setup_roots_length(xcb_get_setup(connection));
 146     client_t *c;
 147     widget_t *w;
 148     wibox_t *wibox;
 149
 150     /* ev->state is
 151      * button status (8 bits) + modifiers status (8 bits)
 152      * we don't care for button status that we get, especially on release, so
 153      * drop them */
 154     ev->state &= 0x00ff;
 155
 156     if((wibox = wibox_getbywin(ev->event))
 157        || (wibox = wibox_getbywin(ev->child)))
 158     {
 159         /* If the wibox is child, then x,y are
 160          * relative to root window */
 161         if(wibox->sw.window == ev->child)
 162         {
 163             ev->event_x -= wibox->sw.geometry.x;
 164             ev->event_y -= wibox->sw.geometry.y;
 165         }
 166         if((w = widget_getbycoords(wibox->position, &wibox->widgets,
 167                                    wibox->sw.geometry.width,
 168                                    wibox->sw.geometry.height,
 169                                    &ev->event_x, &ev->event_y)))
 170         {
 171             button_array_t *b = &w->buttons;
 172
 173             for(int i = 0; i < b->len; i++)
 174                 if(ev->detail == b->tab[i]->button
 175                    && XUTIL_MASK_CLEAN(ev->state) == b->tab[i]->mod)
 176                     switch(ev->response_type)
 177                     {
 178                       case XCB_BUTTON_PRESS:
 179                         if(b->tab[i]->press != LUA_REFNIL)
 180                         {
 181                             luaA_wibox_userdata_new(globalconf.L, wibox);
 182                             luaA_dofunction(globalconf.L, b->tab[i]->press, 1, 0);
 183                         }
 184                         break;
 185                       case XCB_BUTTON_RELEASE:
 186                         if(b->tab[i]->release != LUA_REFNIL)
 187                         {
 188                             luaA_wibox_userdata_new(globalconf.L, wibox);
 189                             luaA_dofunction(globalconf.L, b->tab[i]->release, 1, 0);
 190                         }
 191                         break;
 192                     }
 193         }
 194         /* return even if no widget match */
 195         return 0;
 196     }
 197
 198     if((c = client_getbywin(ev->event)))
 199     {
 200         event_handle_mouse_button(c, ev->response_type, ev->detail, ev->state, &c->buttons);
 201         xcb_allow_events(globalconf.connection,
 202                          XCB_ALLOW_REPLAY_POINTER,
 203                          XCB_CURRENT_TIME);
 204     }
 205     else
 206         for(screen = 0; screen < nb_screen; screen++)
 207             if(xutil_screen_get(connection, screen)->root == ev->event)
 208             {
 209                 event_handle_mouse_button(NULL, ev->response_type, ev->detail, ev->state, &globalconf.buttons);
 210                 return 0;
 211             }
 212
 213     return 0;
 214 }
 215
 216 /** The configure event handler.
 217  * \param data currently unused.
 218  * \param connection The connection to the X server.
 219  * \param ev The event.
 220  */
 221 static int
 222 event_handle_configurerequest(void *data __attribute__ ((unused)),
 223                               xcb_connection_t *connection, xcb_configure_request_event_t *ev)
 224 {
 225     client_t *c;
 226     area_t geometry;
 227
 228     if((c = client_getbywin(ev->window)))
 229     {
 230         geometry = c->geometry;
 231
 232         if(ev->value_mask & XCB_CONFIG_WINDOW_X)
 233             geometry.x = ev->x;
 234         if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
 235             geometry.y = ev->y;
 236         if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
 237             geometry.width = ev->width;
 238         if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
 239             geometry.height = ev->height;
 240
 241         if(geometry.x != c->geometry.x || geometry.y != c->geometry.y
 242            || geometry.width != c->geometry.width || geometry.height != c->geometry.height)
 243         {
 244             if(client_isfloating(c) || layout_get_current(c->screen) == layout_floating)
 245             {
 246                 client_resize(c, geometry, false);
 247                 if(client_hasstrut(c))
 248                     /* All the wiboxes (may) need to be repositioned */
 249                     for(int screen = 0; screen < globalconf.nscreen; screen++)
 250                         for(int i = 0; i < globalconf.screens[screen].wiboxes.len; i++)
 251                         {
 252                             wibox_t *s = globalconf.screens[screen].wiboxes.tab[i];
 253                             wibox_position_update(s);
 254                         }
 255             }
 256             else
 257             {
 258                 client_need_arrange(c);
 259                 /* If we do not resize the client, at least tell it that it
 260                  * has its new configuration. That fixes at least
 261                  * gnome-terminal */
 262                 window_configure(c->win, c->geometry, c->border);
 263             }
 264         }
 265         else
 266             window_configure(c->win, geometry, c->border);
 267     }
 268     else
 269     {
 270         uint16_t config_win_mask = 0;
 271         uint32_t config_win_vals[7];
 272         unsigned short i = 0;
 273
 274         if(ev->value_mask & XCB_CONFIG_WINDOW_X)
 275         {
 276             config_win_mask |= XCB_CONFIG_WINDOW_X;
 277             config_win_vals[i++] = ev->x;
 278         }
 279         if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
 280         {
 281             config_win_mask |= XCB_CONFIG_WINDOW_Y;
 282             config_win_vals[i++] = ev->y;
 283         }
 284         if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
 285         {
 286             config_win_mask |= XCB_CONFIG_WINDOW_WIDTH;
 287             config_win_vals[i++] = ev->width;
 288         }
 289         if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
 290         {
 291             config_win_mask |= XCB_CONFIG_WINDOW_HEIGHT;
 292             config_win_vals[i++] = ev->height;
 293         }
 294         if(ev->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH)
 295         {
 296             config_win_mask |= XCB_CONFIG_WINDOW_BORDER_WIDTH;
 297             config_win_vals[i++] = ev->border_width;
 298         }
 299         if(ev->value_mask & XCB_CONFIG_WINDOW_SIBLING)
 300         {
 301             config_win_mask |= XCB_CONFIG_WINDOW_SIBLING;
 302             config_win_vals[i++] = ev->sibling;
 303         }
 304         if(ev->value_mask & XCB_CONFIG_WINDOW_STACK_MODE)
 305         {
 306             config_win_mask |= XCB_CONFIG_WINDOW_STACK_MODE;
 307             config_win_vals[i++] = ev->stack_mode;
 308         }
 309
 310         xcb_configure_window(connection, ev->window, config_win_mask, config_win_vals);
 311     }
 312
 313     return 0;
 314 }
 315
 316 /** The configure notify event handler.
 317  * \param data currently unused.
 318  * \param connection The connection to the X server.
 319  * \param ev The event.
 320  */
 321 static int
 322 event_handle_configurenotify(void *data __attribute__ ((unused)),
 323                              xcb_connection_t *connection, xcb_configure_notify_event_t *ev)
 324 {
 325     int screen_nbr;
 326     const xcb_screen_t *screen;
 327
 328     for(screen_nbr = 0; screen_nbr < xcb_setup_roots_length(xcb_get_setup (connection)); screen_nbr++)
 329         if((screen = xutil_screen_get(connection, screen_nbr)) != NULL
 330            && ev->window == screen->root
 331            && (ev->width != screen->width_in_pixels
 332                || ev->height != screen->height_in_pixels))
 333             /* it's not that we panic, but restart */
 334             awesome_restart();
 335
 336     return 0;
 337 }
 338
 339 /** The destroy notify event handler.
 340  * \param data currently unused.
 341  * \param connection The connection to the X server.
 342  * \param ev The event.
 343  */
 344 static int
 345 event_handle_destroynotify(void *data __attribute__ ((unused)),
 346                            xcb_connection_t *connection __attribute__ ((unused)),
 347                            xcb_destroy_notify_event_t *ev)
 348 {
 349     client_t *c;
 350     xembed_window_t *emwin;
 351
 352     if((c = client_getbywin(ev->window)))
 353         client_unmanage(c);
 354     else if((emwin = xembed_getbywin(globalconf.embedded, ev->event)))
 355     {
 356         xembed_window_list_detach(&globalconf.embedded, emwin);
 357         for(int i = 0; i < globalconf.nscreen; i++)
 358             widget_invalidate_bytype(i, widget_systray);
 359     }
 360
 361     return 0;
 362 }
 363
 364 /** Handle a motion notify over widgets.
 365  * \param object The object.
 366  * \param mouse_over The pointer to the registered mouse over widget.
 367  * \param widget The new widget the mouse is over.
 368  */
 369 static void
 370 event_handle_widget_motionnotify(void *object,
 371                                  widget_t **mouse_over,
 372                                  widget_t *widget)
 373 {
 374     if(widget != *mouse_over)
 375     {
 376         if(*mouse_over)
 377         {
 378             if((*mouse_over)->mouse_leave != LUA_REFNIL)
 379             {
 380                 /* call mouse leave function on old widget */
 381                 luaA_wibox_userdata_new(globalconf.L, object);
 382                 luaA_dofunction(globalconf.L, (*mouse_over)->mouse_leave, 1, 0);
 383             }
 384         }
 385         if(widget)
 386         {
 387             /* call mouse enter function on new widget and register it */
 388             *mouse_over = widget;
 389             if(widget->mouse_enter != LUA_REFNIL)
 390             {
 391                 luaA_wibox_userdata_new(globalconf.L, object);
 392                 luaA_dofunction(globalconf.L, widget->mouse_enter, 1, 0);
 393             }
 394         }
 395     }
 396 }
 397
 398 /** The motion notify event handler.
 399  * \param data currently unused.
 400  * \param connection The connection to the X server.
 401  * \param ev The event.
 402  */
 403 static int
 404 event_handle_motionnotify(void *data __attribute__ ((unused)),
 405                           xcb_connection_t *connection,
 406                           xcb_motion_notify_event_t *ev)
 407 {
 408     wibox_t *wibox = wibox_getbywin(ev->event);
 409     widget_t *w;
 410
 411     if(wibox
 412        && (w = widget_getbycoords(wibox->position, &wibox->widgets,
 413                                   wibox->sw.geometry.width,
 414                                   wibox->sw.geometry.height,
 415                                   &ev->event_x, &ev->event_y)))
 416     {
 417         globalconf.pointer_x = ev->root_x;
 418         globalconf.pointer_y = ev->root_y;
 419         event_handle_widget_motionnotify(wibox, &wibox->mouse_over, w);
 420     }
 421
 422     return 0;
 423 }
 424
 425 /** The leave notify event handler.
 426  * \param data currently unused.
 427  * \param connection The connection to the X server.
 428  * \param ev The event.
 429  */
 430 static int
 431 event_handle_leavenotify(void *data __attribute__ ((unused)),
 432                          xcb_connection_t *connection,
 433                          xcb_leave_notify_event_t *ev)
 434 {
 435     wibox_t *wibox = wibox_getbywin(ev->event);
 436
 437     if(wibox && wibox->mouse_over)
 438     {
 439         if(wibox->mouse_over->mouse_leave != LUA_REFNIL)
 440         {
 441             /* call mouse leave function on widget the mouse was over */
 442             luaA_wibox_userdata_new(globalconf.L, wibox);
 443             luaA_dofunction(globalconf.L, wibox->mouse_over->mouse_leave, 1, 0);
 444         }
 445         wibox->mouse_over = NULL;
 446     }
 447
 448     return 0;
 449 }
 450
 451 /** The enter notify event handler.
 452  * \param data currently unused.
 453  * \param connection The connection to the X server.
 454  * \param ev The event.
 455  */
 456 static int
 457 event_handle_enternotify(void *data __attribute__ ((unused)),
 458                          xcb_connection_t *connection,
 459                          xcb_enter_notify_event_t *ev)
 460 {
 461     client_t *c;
 462     xembed_window_t *emwin;
 463     wibox_t *wibox;
 464     widget_t *w;
 465
 466     if(ev->mode != XCB_NOTIFY_MODE_NORMAL
 467        || (ev->root_x == globalconf.pointer_x
 468            && ev->root_y == globalconf.pointer_y))
 469         return 0;
 470
 471
 472     if((wibox = wibox_getbywin(ev->event))
 473        && (w = widget_getbycoords(wibox->position, &wibox->widgets,
 474                                   wibox->sw.geometry.width,
 475                                   wibox->sw.geometry.height,
 476                                   &ev->event_x, &ev->event_y)))
 477     {
 478         globalconf.pointer_x = ev->root_x;
 479         globalconf.pointer_y = ev->root_y;
 480         event_handle_widget_motionnotify(wibox, &wibox->mouse_over, w);
 481     }
 482     else if((c = client_getbytitlebarwin(ev->event))
 483        || (c = client_getbywin(ev->event)))
 484     {
 485         window_buttons_grab(c->win, ev->root, &c->buttons);
 486         /* The idea behind saving pointer_x and pointer_y is Bob Marley powered.
 487          * this will allow us top drop some EnterNotify events and thus not giving
 488          * focus to windows appering under the cursor without a cursor move */
 489         globalconf.pointer_x = ev->root_x;
 490         globalconf.pointer_y = ev->root_y;
 491
 492         if(globalconf.hooks.mouse_enter != LUA_REFNIL)
 493         {
 494             luaA_client_userdata_new(globalconf.L, c);
 495             luaA_dofunction(globalconf.L, globalconf.hooks.mouse_enter, 1, 0);
 496         }
 497     }
 498     else if((emwin = xembed_getbywin(globalconf.embedded, ev->event)))
 499         xcb_ungrab_button(globalconf.connection, XCB_BUTTON_INDEX_ANY,
 500                           xutil_screen_get(connection, emwin->phys_screen)->root,
 501                           XCB_BUTTON_MASK_ANY);
 502     else if(ev->event == ev->root)
 503         window_root_buttons_grab(ev->root);
 504
 505     return 0;
 506 }
 507
 508 /** The expose event handler.
 509  * \param data currently unused.
 510  * \param connection The connection to the X server.
 511  * \param ev The event.
 512  */
 513 static int
 514 event_handle_expose(void *data __attribute__ ((unused)),
 515                     xcb_connection_t *connection __attribute__ ((unused)),
 516                     xcb_expose_event_t *ev)
 517 {
 518     wibox_t *wibox = wibox_getbywin(ev->window);
 519
 520     if(wibox)
 521         simplewindow_refresh_pixmap_partial(&wibox->sw,
 522                                             ev->x, ev->y,
 523                                             ev->width, ev->height);
 524
 525     return 0;
 526 }
 527
 528 /** The key press event handler.
 529  * \param data currently unused.
 530  * \param connection The connection to the X server.
 531  * \param ev The event.
 532  */
 533 static int
 534 event_handle_keypress(void *data __attribute__ ((unused)),
 535                       xcb_connection_t *connection __attribute__ ((unused)),
 536                       xcb_key_press_event_t *ev)
 537 {
 538     if(globalconf.keygrabber != LUA_REFNIL)
 539     {
 540         lua_rawgeti(globalconf.L, LUA_REGISTRYINDEX, globalconf.keygrabber);
 541         if(keygrabber_handlekpress(globalconf.L, ev))
 542         {
 543             if(lua_pcall(globalconf.L, 2, 1, 0))
 544             {
 545                 warn("error running function: %s", lua_tostring(globalconf.L, -1));
 546                 luaA_keygrabber_stop(globalconf.L);
 547             }
 548             else if(!lua_isboolean(globalconf.L, -1) || !lua_toboolean(globalconf.L, -1))
 549                 luaA_keygrabber_stop(globalconf.L);
 550         }
 551         lua_pop(globalconf.L, 1);  /* pop returned value or function if not called */
 552     }
 553     else
 554     {
 555         keybinding_t *k = keybinding_find(ev);
 556         if (k && k->fct != LUA_REFNIL)
 557             luaA_dofunction(globalconf.L, k->fct, 0, 0);
 558     }
 559
 560     return 0;
 561 }
 562
 563 /** The map request event handler.
 564  * \param data currently unused.
 565  * \param connection The connection to the X server.
 566  * \param ev The event.
 567  */
 568 static int
 569 event_handle_maprequest(void *data __attribute__ ((unused)),
 570                         xcb_connection_t *connection, xcb_map_request_event_t *ev)
 571 {
 572     int phys_screen, screen = 0, ret = 0;
 573     client_t *c;
 574     xcb_get_window_attributes_cookie_t wa_c;
 575     xcb_get_window_attributes_reply_t *wa_r;
 576     xcb_query_pointer_cookie_t qp_c = { 0 };
 577     xcb_query_pointer_reply_t *qp_r = NULL;
 578     xcb_get_geometry_cookie_t geom_c;
 579     xcb_get_geometry_reply_t *geom_r;
 580
 581     wa_c = xcb_get_window_attributes_unchecked(connection, ev->window);
 582
 583     if(!(wa_r = xcb_get_window_attributes_reply(connection, wa_c, NULL)))
 584         return -1;
 585
 586     if(wa_r->override_redirect)
 587         goto bailout;
 588
 589     if(xembed_getbywin(globalconf.embedded, ev->window))
 590     {
 591         xcb_map_window(connection, ev->window);
 592         xembed_window_activate(connection, ev->window);
 593     }
 594     else if((c = client_getbywin(ev->window)))
 595     {
 596         /* Check that it may be visible, but not asked to be hidden */
 597         if(client_maybevisible(c, c->screen) && !c->ishidden)
 598         {
 599             client_setminimized(c, false);
 600             /* it will be raised, so just update ourself */
 601             client_raise(c);
 602         }
 603     }
 604     else
 605     {
 606         geom_c = xcb_get_geometry_unchecked(connection, ev->window);
 607
 608         if(globalconf.xinerama_is_active)
 609             qp_c = xcb_query_pointer_unchecked(connection,
 610                                                xutil_screen_get(globalconf.connection,
 611                                                                 globalconf.default_screen)->root);
 612
 613         if(!(geom_r = xcb_get_geometry_reply(connection, geom_c, NULL)))
 614         {
 615             if(globalconf.xinerama_is_active)
 616                 qp_r = xcb_query_pointer_reply(connection, qp_c, NULL);
 617             ret = -1;
 618             goto bailout;
 619         }
 620
 621
 622         phys_screen = xutil_root2screen(connection, geom_r->root);
 623
 624         if(globalconf.xinerama_is_active
 625            && (qp_r = xcb_query_pointer_reply(connection, qp_c, NULL)))
 626             screen = screen_getbycoord(screen, qp_r->root_x, qp_r->root_y);
 627         else
 628             screen = phys_screen;
 629
 630         client_manage(ev->window, geom_r, phys_screen, screen);
 631         p_delete(&geom_r);
 632     }
 633
 634 bailout:
 635     p_delete(&qp_r);
 636     p_delete(&wa_r);
 637     return ret;
 638 }
 639
 640 /** The unmap notify event handler.
 641  * \param data currently unused.
 642  * \param connection The connection to the X server.
 643  * \param ev The event.
 644  */
 645 static int
 646 event_handle_unmapnotify(void *data __attribute__ ((unused)),
 647                          xcb_connection_t *connection, xcb_unmap_notify_event_t *ev)
 648 {
 649     client_t *c;
 650     xembed_window_t *em;
 651
 652     if((c = client_getbywin(ev->window)))
 653     {
 654         if(ev->event == xutil_screen_get(connection, c->phys_screen)->root
 655            && XCB_EVENT_SENT(ev)
 656            && window_state_get_reply(window_state_get_unchecked(c->win)) == XCB_WM_STATE_NORMAL)
 657             client_unmanage(c);
 658     }
 659     else if((em = xembed_getbywin(globalconf.embedded, ev->window)))
 660     {
 661         xembed_window_list_detach(&globalconf.embedded, em);
 662         for(int i = 0; i < globalconf.nscreen; i++)
 663             widget_invalidate_bytype(i, widget_systray);
 664     }
 665
 666     return 0;
 667 }
 668
 669 /** The randr screen change notify event handler.
 670  * \param data currently unused.
 671  * \param connection The connection to the X server.
 672  * \param ev The event.
 673  */
 674 static int
 675 event_handle_randr_screen_change_notify(void *data __attribute__ ((unused)),
 676                                         xcb_connection_t *connection __attribute__ ((unused)),
 677                                         xcb_randr_screen_change_notify_event_t *ev)
 678 {
 679     if(!globalconf.have_randr)
 680         return -1;
 681
 682     /* Code  of  XRRUpdateConfiguration Xlib  function  ported to  XCB
 683      * (only the code relevant  to RRScreenChangeNotify) as the latter
 684      * doesn't provide this kind of function */
 685     if(ev->rotation & (XCB_RANDR_ROTATION_ROTATE_90 | XCB_RANDR_ROTATION_ROTATE_270))
 686         xcb_randr_set_screen_size(connection, ev->root, ev->height, ev->width,
 687                                   ev->mheight, ev->mwidth);
 688     else
 689         xcb_randr_set_screen_size(connection, ev->root, ev->width, ev->height,
 690                                   ev->mwidth, ev->mheight);
 691
 692     /* XRRUpdateConfiguration also executes the following instruction
 693      * but it's not useful because SubpixelOrder is not used at all at
 694      * the moment
 695      *
 696      * XRenderSetSubpixelOrder(dpy, snum, scevent->subpixel_order);
 697      */
 698
 699     awesome_restart();
 700
 701     return 0;
 702 }
 703
 704 /** The client message event handler.
 705  * \param data currently unused.
 706  * \param connection The connection to the X server.
 707  * \param ev The event.
 708  */
 709 static int
 710 event_handle_clientmessage(void *data __attribute__ ((unused)),
 711                            xcb_connection_t *connection,
 712                            xcb_client_message_event_t *ev)
 713 {
 714     client_t *c;
 715
 716     if(ev->type == WM_CHANGE_STATE)
 717     {
 718         if((c = client_getbywin(ev->window))
 719            && ev->format == 32
 720            && ev->data.data32[0] == XCB_WM_STATE_ICONIC)
 721             client_setminimized(c, true);
 722     }
 723     else if(ev->type == _XEMBED)
 724         return xembed_process_client_message(ev);
 725     else if(ev->type == _NET_SYSTEM_TRAY_OPCODE)
 726         return systray_process_client_message(ev);
 727     return ewmh_process_client_message(ev);
 728 }
 729
 730 /** The keymap change notify event handler.
 731  * \param data Unused data.
 732  * \param connection The connection to the X server.
 733  * \param ev The event.
 734  * \return Status code, 0 if everything's fine.
 735  */
 736 static int
 737 event_handle_mappingnotify(void *data,
 738                            xcb_connection_t *connection,
 739                            xcb_mapping_notify_event_t *ev)
 740 {
 741     xcb_get_modifier_mapping_cookie_t xmapping_cookie;
 742
 743     if(ev->request == XCB_MAPPING_MODIFIER
 744        || ev->request == XCB_MAPPING_KEYBOARD)
 745     {
 746         int nscreen = xcb_setup_roots_length(xcb_get_setup(connection));
 747         int phys_screen = 0;
 748
 749         /* Send the request to get the NumLock, ShiftLock and CapsLock masks */
 750         xmapping_cookie = xcb_get_modifier_mapping_unchecked(globalconf.connection);
 751
 752         /* Free and then allocate the key symbols */
 753         xcb_key_symbols_free(globalconf.keysyms);
 754         globalconf.keysyms = xcb_key_symbols_alloc(globalconf.connection);
 755
 756         /* Process the reply of previously sent mapping request */
 757         xutil_lock_mask_get(globalconf.connection, xmapping_cookie,
 758                             globalconf.keysyms, &globalconf.numlockmask,
 759                             &globalconf.shiftlockmask, &globalconf.capslockmask);
 760
 761         do
 762         {
 763             xcb_screen_t *s = xutil_screen_get(globalconf.connection, phys_screen);
 764             /* yes XCB_BUTTON_MASK_ANY is also for grab_key even if it's look
 765              * weird */
 766             xcb_ungrab_key(connection, XCB_GRAB_ANY, s->root, XCB_BUTTON_MASK_ANY);
 767             phys_screen++;
 768         } while(phys_screen < nscreen);
 769
 770         /* regrab everything */
 771         keybinding_array_t *arr = &globalconf.keys.by_sym;
 772         for(int i = 0; i < arr->len; i++)
 773             window_root_grabkey(arr->tab[i]);
 774
 775         arr = &globalconf.keys.by_code;
 776         for(int i = 0; i < arr->len; i++)
 777             window_root_grabkey(arr->tab[i]);
 778     }
 779
 780     return 0;
 781 }
 782
 783 static int
 784 event_handle_reparentnotify(void *data,
 785                            xcb_connection_t *connection,
 786                            xcb_reparent_notify_event_t *ev)
 787 {
 788     client_t *c;
 789
 790     if((c = client_getbywin(ev->window)))
 791         client_unmanage(c);
 792
 793     return 0;
 794 }
 795
 796 void a_xcb_set_event_handlers(void)
 797 {
 798     const xcb_query_extension_reply_t *randr_query;
 799
 800     xcb_event_set_button_press_handler(&globalconf.evenths, event_handle_button, NULL);
 801     xcb_event_set_button_release_handler(&globalconf.evenths, event_handle_button, NULL);
 802     xcb_event_set_configure_request_handler(&globalconf.evenths, event_handle_configurerequest, NULL);
 803     xcb_event_set_configure_notify_handler(&globalconf.evenths, event_handle_configurenotify, NULL);
 804     xcb_event_set_destroy_notify_handler(&globalconf.evenths, event_handle_destroynotify, NULL);
 805     xcb_event_set_enter_notify_handler(&globalconf.evenths, event_handle_enternotify, NULL);
 806     xcb_event_set_leave_notify_handler(&globalconf.evenths, event_handle_leavenotify, NULL);
 807     xcb_event_set_motion_notify_handler(&globalconf.evenths, event_handle_motionnotify, NULL);
 808     xcb_event_set_expose_handler(&globalconf.evenths, event_handle_expose, NULL);
 809     xcb_event_set_key_press_handler(&globalconf.evenths, event_handle_keypress, NULL);
 810     xcb_event_set_map_request_handler(&globalconf.evenths, event_handle_maprequest, NULL);
 811     xcb_event_set_unmap_notify_handler(&globalconf.evenths, event_handle_unmapnotify, NULL);
 812     xcb_event_set_client_message_handler(&globalconf.evenths, event_handle_clientmessage, NULL);
 813     xcb_event_set_mapping_notify_handler(&globalconf.evenths, event_handle_mappingnotify, NULL);
 814     xcb_event_set_reparent_notify_handler(&globalconf.evenths, event_handle_reparentnotify, NULL);
 815
 816     /* check for randr extension */
 817     randr_query = xcb_get_extension_data(globalconf.connection, &xcb_randr_id);
 818     if((globalconf.have_randr = randr_query->present))
 819         xcb_event_set_handler(&globalconf.evenths,
 820                               randr_query->first_event + XCB_RANDR_SCREEN_CHANGE_NOTIFY,
 821                               (xcb_generic_event_handler_t) event_handle_randr_screen_change_notify,
 822                               NULL);
 823
 824 }
 825
 826 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80