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 "property.h"
  31 #include "objects/tag.h"
  32 #include "objects/drawin.h"
  33 #include "xwindow.h"
  34 #include "ewmh.h"
  35 #include "objects/client.h"
  36 #include "keyresolv.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 #include "common/xutil.h"
  44
  45 #define DO_EVENT_HOOK_CALLBACK(type, xcbtype, xcbeventprefix, arraytype, match) \
  46     static void \
  47     event_##xcbtype##_callback(xcb_##xcbtype##_press_event_t *ev, \
  48                                arraytype *arr, \
  49                                int oud, \
  50                                int nargs, \
  51                                void *data) \
  52     { \
  53         int abs_oud = oud < 0 ? ((lua_gettop(globalconf.L) + 1) + oud) : oud; \
  54         int item_matching = 0; \
  55         foreach(item, *arr) \
  56             if(match(ev, *item, data)) \
  57             { \
  58                 if(oud) \
  59                     luaA_object_push_item(globalconf.L, abs_oud, *item); \
  60                 else \
  61                     luaA_object_push(globalconf.L, *item); \
  62                 item_matching++; \
  63             } \
  64         for(; item_matching > 0; item_matching--) \
  65         { \
  66             switch(ev->response_type) \
  67             { \
  68               case xcbeventprefix##_PRESS: \
  69                 for(int i = 0; i < nargs; i++) \
  70                     lua_pushvalue(globalconf.L, - nargs - item_matching); \
  71                 luaA_object_emit_signal(globalconf.L, - nargs - 1, "press", nargs); \
  72                 break; \
  73               case xcbeventprefix##_RELEASE: \
  74                 for(int i = 0; i < nargs; i++) \
  75                     lua_pushvalue(globalconf.L, - nargs - item_matching); \
  76                 luaA_object_emit_signal(globalconf.L, - nargs - 1, "release", nargs); \
  77                 break; \
  78             } \
  79             lua_pop(globalconf.L, 1); \
  80         } \
  81         lua_pop(globalconf.L, nargs); \
  82     }
  83
  84 static bool
  85 event_key_match(xcb_key_press_event_t *ev, keyb_t *k, void *data)
  86 {
  87     assert(data);
  88     xcb_keysym_t keysym = *(xcb_keysym_t *) data;
  89     return (((k->keycode && ev->detail == k->keycode)
  90              || (k->keysym && keysym == k->keysym))
  91             && (k->modifiers == XCB_BUTTON_MASK_ANY || k->modifiers == ev->state));
  92 }
  93
  94 static bool
  95 event_button_match(xcb_button_press_event_t *ev, button_t *b, void *data)
  96 {
  97     return ((!b->button || ev->detail == b->button)
  98             && (b->modifiers == XCB_BUTTON_MASK_ANY || b->modifiers == ev->state));
  99 }
 100
 101 DO_EVENT_HOOK_CALLBACK(button_t, button, XCB_BUTTON, button_array_t, event_button_match)
 102 DO_EVENT_HOOK_CALLBACK(keyb_t, key, XCB_KEY, key_array_t, event_key_match)
 103
 104 /** Handle an event with mouse grabber if needed
 105  * \param x The x coordinate.
 106  * \param y The y coordinate.
 107  * \param mask The mask buttons.
 108  * \return True if the event was handled.
 109  */
 110 static bool
 111 event_handle_mousegrabber(int x, int y, uint16_t mask)
 112 {
 113     if(globalconf.mousegrabber != LUA_REFNIL)
 114     {
 115         lua_rawgeti(globalconf.L, LUA_REGISTRYINDEX, globalconf.mousegrabber);
 116         mousegrabber_handleevent(globalconf.L, x, y, mask);
 117         if(lua_pcall(globalconf.L, 1, 1, 0))
 118         {
 119             warn("error running function: %s", lua_tostring(globalconf.L, -1));
 120             luaA_mousegrabber_stop(globalconf.L);
 121         }
 122         else if(!lua_isboolean(globalconf.L, -1) || !lua_toboolean(globalconf.L, -1))
 123             luaA_mousegrabber_stop(globalconf.L);
 124         lua_pop(globalconf.L, 1);  /* pop returned value */
 125         return true;
 126     }
 127     return false;
 128 }
 129
 130 /** Emit a button signal.
 131  * The top of the lua stack has to be the object on which to emit the event.
 132  * \param ev The event to handle.
 133  */
 134 static void
 135 event_emit_button(xcb_button_press_event_t *ev)
 136 {
 137     const char *name;
 138     switch(XCB_EVENT_RESPONSE_TYPE(ev))
 139     {
 140     case XCB_BUTTON_PRESS:
 141         name = "button::press";
 142         break;
 143     case XCB_BUTTON_RELEASE:
 144         name = "button::release";
 145         break;
 146     default:
 147         fatal("Invalid event type");
 148     }
 149
 150     /* Push the event's info */
 151     lua_pushnumber(globalconf.L, ev->event_x);
 152     lua_pushnumber(globalconf.L, ev->event_y);
 153     lua_pushnumber(globalconf.L, ev->detail);
 154     luaA_pushmodifiers(globalconf.L, ev->state);
 155     /* And emit the signal */
 156     luaA_object_emit_signal(globalconf.L, -5, name, 4);
 157 }
 158
 159 /** The button press event handler.
 160  * \param ev The event.
 161  */
 162 static void
 163 event_handle_button(xcb_button_press_event_t *ev)
 164 {
 165     client_t *c;
 166     drawin_t *drawin;
 167
 168     globalconf.timestamp = ev->time;
 169
 170     if(event_handle_mousegrabber(ev->root_x, ev->root_y, 1 << (ev->detail - 1 + 8)))
 171         return;
 172
 173     /* ev->state is
 174      * button status (8 bits) + modifiers status (8 bits)
 175      * we don't care for button status that we get, especially on release, so
 176      * drop them */
 177     ev->state &= 0x00ff;
 178
 179     if((drawin = drawin_getbywin(ev->event))
 180        || (drawin = drawin_getbywin(ev->child)))
 181     {
 182         /* If the drawin is child, then x,y are
 183          * relative to root window */
 184         if(drawin->window == ev->child)
 185         {
 186             ev->event_x -= drawin->geometry.x + drawin->border_width;
 187             ev->event_y -= drawin->geometry.y + drawin->border_width;
 188         }
 189
 190         /* Push the drawable */
 191         luaA_object_push(globalconf.L, drawin);
 192         luaA_object_push_item(globalconf.L, -1, drawin->drawable);
 193         /* and handle the button raw button event */
 194         event_emit_button(ev);
 195         lua_pop(globalconf.L, 1);
 196         /* check if any button object matches */
 197         event_button_callback(ev, &drawin->buttons, -1, 1, NULL);
 198     }
 199     else if((c = client_getbyframewin(ev->event)))
 200     {
 201         luaA_object_push(globalconf.L, c);
 202         /* And handle the button raw button event */
 203         event_emit_button(ev);
 204         /* then check if a titlebar was "hit" */
 205         int x = ev->event_x, y = ev->event_y;
 206         drawable_t *d = client_get_drawable_offset(c, &x, &y);
 207         if (d)
 208         {
 209             /* Copy the event so that we can fake x/y */
 210             xcb_button_press_event_t event = *ev;
 211             event.event_x = x;
 212             event.event_y = y;
 213             luaA_object_push_item(globalconf.L, -1, d);
 214             event_emit_button(&event);
 215             lua_pop(globalconf.L, 1);
 216         }
 217         /* then check if any button objects match */
 218         event_button_callback(ev, &c->buttons, -1, 1, NULL);
 219         xcb_allow_events(globalconf.connection,
 220                          XCB_ALLOW_REPLAY_POINTER,
 221                          XCB_CURRENT_TIME);
 222     }
 223     else if(ev->child == XCB_NONE)
 224         if(globalconf.screen->root == ev->event)
 225         {
 226             event_button_callback(ev, &globalconf.buttons, 0, 0, NULL);
 227             return;
 228         }
 229 }
 230
 231 static void
 232 event_handle_configurerequest_configure_window(xcb_configure_request_event_t *ev)
 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(globalconf.connection, ev->window, config_win_mask, config_win_vals);
 275 }
 276
 277 /** The configure event handler.
 278  * \param ev The event.
 279  */
 280 static void
 281 event_handle_configurerequest(xcb_configure_request_event_t *ev)
 282 {
 283     client_t *c;
 284
 285     if((c = client_getbywin(ev->window)))
 286     {
 287         area_t geometry = c->geometry;
 288         int16_t diff_w = 0, diff_h = 0, diff_border = 0;
 289
 290         if(ev->value_mask & XCB_CONFIG_WINDOW_X)
 291             geometry.x = ev->x;
 292         if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
 293             geometry.y = ev->y;
 294         if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
 295         {
 296             uint16_t old_w = geometry.width;
 297             geometry.width = ev->width;
 298             /* The ConfigureRequest specifies the size of the client window, we want the frame */
 299             geometry.width += c->titlebar[CLIENT_TITLEBAR_LEFT].size;
 300             geometry.width += c->titlebar[CLIENT_TITLEBAR_RIGHT].size;
 301             diff_w = geometry.width - old_w;
 302         }
 303         if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
 304         {
 305             uint16_t old_h = geometry.height;
 306             geometry.height = ev->height;
 307             /* The ConfigureRequest specifies the size of the client window, we want the frame */
 308             geometry.height += c->titlebar[CLIENT_TITLEBAR_TOP].size;
 309             geometry.height += c->titlebar[CLIENT_TITLEBAR_BOTTOM].size;
 310             diff_h = geometry.height - old_h;
 311         }
 312         if(ev->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH)
 313         {
 314             diff_border = ev->border_width - c->border_width;
 315             diff_h += diff_border;
 316             diff_w += diff_border;
 317
 318             luaA_object_push(globalconf.L, c);
 319             window_set_border_width(globalconf.L, -1, ev->border_width);
 320             lua_pop(globalconf.L, 1);
 321         }
 322
 323         /* If the client resizes without moving itself, apply window gravity */
 324         if(c->size_hints.flags & XCB_ICCCM_SIZE_HINT_P_WIN_GRAVITY)
 325         {
 326             int16_t diff_x = 0, diff_y = 0;
 327             xwindow_translate_for_gravity(c->size_hints.win_gravity, diff_border, diff_border, diff_w, diff_h, &diff_x, &diff_y);
 328             if(!(ev->value_mask & XCB_CONFIG_WINDOW_X))
 329                 geometry.x += diff_x;
 330             if(!(ev->value_mask & XCB_CONFIG_WINDOW_Y))
 331                 geometry.y += diff_y;
 332         }
 333
 334         if(!client_resize(c, geometry, false))
 335             /* ICCCM 4.1.5 / 4.2.3, if nothing was changed, send an event saying so */
 336             client_send_configure(c);
 337     }
 338     else
 339         event_handle_configurerequest_configure_window(ev);
 340 }
 341
 342 /** The configure notify event handler.
 343  * \param ev The event.
 344  */
 345 static void
 346 event_handle_configurenotify(xcb_configure_notify_event_t *ev)
 347 {
 348     const xcb_screen_t *screen = globalconf.screen;
 349
 350     if(ev->window == screen->root
 351        && (ev->width != screen->width_in_pixels
 352            || ev->height != screen->height_in_pixels))
 353         /* it's not that we panic, but restart */
 354         awesome_restart();
 355 }
 356
 357 /** The destroy notify event handler.
 358  * \param ev The event.
 359  */
 360 static void
 361 event_handle_destroynotify(xcb_destroy_notify_event_t *ev)
 362 {
 363     client_t *c;
 364
 365     if((c = client_getbywin(ev->window)))
 366         client_unmanage(c, false);
 367     else
 368         for(int i = 0; i < globalconf.embedded.len; i++)
 369             if(globalconf.embedded.tab[i].win == ev->window)
 370             {
 371                 xembed_window_array_take(&globalconf.embedded, i);
 372                 luaA_systray_invalidate();
 373             }
 374 }
 375
 376 /** The motion notify event handler.
 377  * \param ev The event.
 378  */
 379 static void
 380 event_handle_motionnotify(xcb_motion_notify_event_t *ev)
 381 {
 382     drawin_t *w;
 383     client_t *c;
 384
 385     globalconf.timestamp = ev->time;
 386
 387     if(event_handle_mousegrabber(ev->root_x, ev->root_y, ev->state))
 388         return;
 389
 390     if((c = client_getbyframewin(ev->event)))
 391     {
 392         luaA_object_push(globalconf.L, c);
 393         lua_pushnumber(globalconf.L, ev->event_x);
 394         lua_pushnumber(globalconf.L, ev->event_y);
 395         luaA_object_emit_signal(globalconf.L, -3, "mouse::move", 2);
 396
 397         /* now check if a titlebar was "hit" */
 398         int x = ev->event_x, y = ev->event_y;
 399         drawable_t *d = client_get_drawable_offset(c, &x, &y);
 400         if (d)
 401         {
 402             luaA_object_push_item(globalconf.L, -1, d);
 403             lua_pushnumber(globalconf.L, x);
 404             lua_pushnumber(globalconf.L, y);
 405             luaA_object_emit_signal(globalconf.L, -3, "mouse::move", 2);
 406             lua_pop(globalconf.L, 1);
 407         }
 408         lua_pop(globalconf.L, 1);
 409     }
 410
 411     if((w = drawin_getbywin(ev->event)))
 412     {
 413         luaA_object_push(globalconf.L, w);
 414         luaA_object_push_item(globalconf.L, -1, w->drawable);
 415         lua_pushnumber(globalconf.L, ev->event_x);
 416         lua_pushnumber(globalconf.L, ev->event_y);
 417         luaA_object_emit_signal(globalconf.L, -3, "mouse::move", 2);
 418         lua_pop(globalconf.L, 2);
 419     }
 420 }
 421
 422 /** The leave notify event handler.
 423  * \param ev The event.
 424  */
 425 static void
 426 event_handle_leavenotify(xcb_leave_notify_event_t *ev)
 427 {
 428     drawin_t *drawin;
 429     client_t *c;
 430
 431     globalconf.timestamp = ev->time;
 432
 433     if(ev->mode != XCB_NOTIFY_MODE_NORMAL)
 434         return;
 435
 436     if((c = client_getbyframewin(ev->event)))
 437     {
 438         luaA_object_push(globalconf.L, c);
 439         luaA_object_emit_signal(globalconf.L, -1, "mouse::leave", 0);
 440         drawable_t *d = client_get_drawable(c, ev->event_x, ev->event_y);
 441         if (d)
 442         {
 443             luaA_object_push_item(globalconf.L, -1, d);
 444             luaA_object_emit_signal(globalconf.L, -1, "mouse::leave", 0);
 445             lua_pop(globalconf.L, 1);
 446         }
 447         lua_pop(globalconf.L, 1);
 448     }
 449
 450     if((drawin = drawin_getbywin(ev->event)))
 451     {
 452         luaA_object_push(globalconf.L, drawin);
 453         luaA_object_push_item(globalconf.L, -1, drawin->drawable);
 454         luaA_object_emit_signal(globalconf.L, -1, "mouse::leave", 0);
 455         lua_pop(globalconf.L, 2);
 456     }
 457 }
 458
 459 /** The enter notify event handler.
 460  * \param ev The event.
 461  */
 462 static void
 463 event_handle_enternotify(xcb_enter_notify_event_t *ev)
 464 {
 465     client_t *c;
 466     drawin_t *drawin;
 467
 468     globalconf.timestamp = ev->time;
 469
 470     if(ev->mode != XCB_NOTIFY_MODE_NORMAL)
 471         return;
 472
 473     if((drawin = drawin_getbywin(ev->event)))
 474     {
 475         luaA_object_push(globalconf.L, drawin);
 476         luaA_object_push_item(globalconf.L, -1, drawin->drawable);
 477         luaA_object_emit_signal(globalconf.L, -1, "mouse::enter", 0);
 478         lua_pop(globalconf.L, 2);
 479     }
 480
 481     if((c = client_getbyframewin(ev->event)))
 482     {
 483         luaA_object_push(globalconf.L, c);
 484         luaA_object_emit_signal(globalconf.L, -1, "mouse::enter", 0);
 485         drawable_t *d = client_get_drawable(c, ev->event_x, ev->event_y);
 486         if (d)
 487         {
 488             luaA_object_push_item(globalconf.L, -1, d);
 489             luaA_object_emit_signal(globalconf.L, -1, "mouse::enter", 0);
 490             lua_pop(globalconf.L, 1);
 491         }
 492         lua_pop(globalconf.L, 1);
 493     }
 494 }
 495
 496 /** The focus in event handler.
 497  * \param ev The event.
 498  */
 499 static void
 500 event_handle_focusin(xcb_focus_in_event_t *ev)
 501 {
 502     if (ev->mode == XCB_NOTIFY_MODE_GRAB
 503             || ev->mode == XCB_NOTIFY_MODE_UNGRAB)
 504         /* Ignore focus changes due to keyboard grabs */
 505         return;
 506
 507     /* Events that we are interested in: */
 508     switch(ev->detail)
 509     {
 510         /* These are events that jump between root windows.
 511          */
 512         case XCB_NOTIFY_DETAIL_ANCESTOR:
 513         case XCB_NOTIFY_DETAIL_INFERIOR:
 514
 515         /* These are events that jump between clients.
 516          * Virtual events ensure we always get an event on our top-level window.
 517          */
 518         case XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL:
 519         case XCB_NOTIFY_DETAIL_NONLINEAR:
 520           {
 521             client_t *c;
 522
 523             if((c = client_getbywin(ev->event))) {
 524                 /* If there is still a pending focus change, do it now. */
 525                 client_focus_refresh();
 526                 client_focus_update(c);
 527             }
 528           }
 529         /* all other events are ignored */
 530         default:
 531             break;
 532     }
 533 }
 534
 535 /** The expose event handler.
 536  * \param ev The event.
 537  */
 538 static void
 539 event_handle_expose(xcb_expose_event_t *ev)
 540 {
 541     drawin_t *drawin;
 542     client_t *client;
 543
 544     if((drawin = drawin_getbywin(ev->window)))
 545         drawin_refresh_pixmap_partial(drawin,
 546                                       ev->x, ev->y,
 547                                       ev->width, ev->height);
 548     if ((client = client_getbyframewin(ev->window)))
 549         client_refresh(client);
 550 }
 551
 552 /** The key press event handler.
 553  * \param ev The event.
 554  */
 555 static void
 556 event_handle_key(xcb_key_press_event_t *ev)
 557 {
 558     globalconf.timestamp = ev->time;
 559
 560     if(globalconf.keygrabber != LUA_REFNIL)
 561     {
 562         lua_rawgeti(globalconf.L, LUA_REGISTRYINDEX, globalconf.keygrabber);
 563         if(keygrabber_handlekpress(globalconf.L, ev))
 564         {
 565             if(lua_pcall(globalconf.L, 3, 1, 0))
 566             {
 567                 warn("error running function: %s", lua_tostring(globalconf.L, -1));
 568                 luaA_keygrabber_stop(globalconf.L);
 569             }
 570         }
 571         lua_pop(globalconf.L, 1);  /* pop returned value or function if not called */
 572     }
 573     else
 574     {
 575         /* get keysym ignoring all modifiers */
 576         xcb_keysym_t keysym = keyresolv_get_keysym(ev->detail, 0);
 577         client_t *c;
 578         if((c = client_getbyframewin(ev->event)))
 579         {
 580             luaA_object_push(globalconf.L, c);
 581             event_key_callback(ev, &c->keys, -1, 1, &keysym);
 582         }
 583         else
 584             event_key_callback(ev, &globalconf.keys, 0, 0, &keysym);
 585     }
 586 }
 587
 588 /** The map request event handler.
 589  * \param ev The event.
 590  */
 591 static void
 592 event_handle_maprequest(xcb_map_request_event_t *ev)
 593 {
 594     client_t *c;
 595     xcb_get_window_attributes_cookie_t wa_c;
 596     xcb_get_window_attributes_reply_t *wa_r;
 597     xcb_get_geometry_cookie_t geom_c;
 598     xcb_get_geometry_reply_t *geom_r;
 599
 600     wa_c = xcb_get_window_attributes_unchecked(globalconf.connection, ev->window);
 601
 602     if(!(wa_r = xcb_get_window_attributes_reply(globalconf.connection, wa_c, NULL)))
 603         return;
 604
 605     if(wa_r->override_redirect)
 606         goto bailout;
 607
 608     if(xembed_getbywin(&globalconf.embedded, ev->window))
 609     {
 610         xcb_map_window(globalconf.connection, ev->window);
 611         xembed_window_activate(globalconf.connection, ev->window);
 612     }
 613     else if((c = client_getbywin(ev->window)))
 614     {
 615         /* Check that it may be visible, but not asked to be hidden */
 616         if(client_maybevisible(c) && !c->hidden)
 617         {
 618             luaA_object_push(globalconf.L, c);
 619             client_set_minimized(globalconf.L, -1, false);
 620             lua_pop(globalconf.L, 1);
 621             /* it will be raised, so just update ourself */
 622             client_raise(c);
 623         }
 624     }
 625     else
 626     {
 627         geom_c = xcb_get_geometry_unchecked(globalconf.connection, ev->window);
 628
 629         if(!(geom_r = xcb_get_geometry_reply(globalconf.connection, geom_c, NULL)))
 630         {
 631             goto bailout;
 632         }
 633
 634         client_manage(ev->window, geom_r, false);
 635
 636         p_delete(&geom_r);
 637     }
 638
 639 bailout:
 640     p_delete(&wa_r);
 641 }
 642
 643 /** The unmap notify event handler.
 644  * \param ev The event.
 645  */
 646 static void
 647 event_handle_unmapnotify(xcb_unmap_notify_event_t *ev)
 648 {
 649     client_t *c;
 650
 651     if((c = client_getbywin(ev->window)))
 652         client_unmanage(c, true);
 653     else
 654         for(int i = 0; i < globalconf.embedded.len; i++)
 655             if(globalconf.embedded.tab[i].win == ev->window)
 656             {
 657                 xembed_window_array_take(&globalconf.embedded, i);
 658                 xcb_change_save_set(globalconf.connection, XCB_SET_MODE_DELETE, ev->window);
 659                 luaA_systray_invalidate();
 660             }
 661 }
 662
 663 /** The randr screen change notify event handler.
 664  * \param ev The event.
 665  */
 666 static void
 667 event_handle_randr_screen_change_notify(xcb_randr_screen_change_notify_event_t *ev)
 668 {
 669     /* Code  of  XRRUpdateConfiguration Xlib  function  ported to  XCB
 670      * (only the code relevant  to RRScreenChangeNotify) as the latter
 671      * doesn't provide this kind of function */
 672     if(ev->rotation & (XCB_RANDR_ROTATION_ROTATE_90 | XCB_RANDR_ROTATION_ROTATE_270))
 673         xcb_randr_set_screen_size(globalconf.connection, ev->root, ev->height, ev->width,
 674                                   ev->mheight, ev->mwidth);
 675     else
 676         xcb_randr_set_screen_size(globalconf.connection, ev->root, ev->width, ev->height,
 677                                   ev->mwidth, ev->mheight);
 678
 679     /* XRRUpdateConfiguration also executes the following instruction
 680      * but it's not useful because SubpixelOrder is not used at all at
 681      * the moment
 682      *
 683      * XRenderSetSubpixelOrder(dpy, snum, scevent->subpixel_order);
 684      */
 685
 686     awesome_restart();
 687 }
 688
 689 /** The client message event handler.
 690  * \param ev The event.
 691  */
 692 static void
 693 event_handle_clientmessage(xcb_client_message_event_t *ev)
 694 {
 695     /* check for startup notification messages */
 696     if(sn_xcb_display_process_event(globalconf.sndisplay, (xcb_generic_event_t *) ev))
 697         return;
 698
 699     if(ev->type == WM_CHANGE_STATE)
 700     {
 701         client_t *c;
 702         if((c = client_getbywin(ev->window))
 703            && ev->format == 32
 704            && ev->data.data32[0] == XCB_ICCCM_WM_STATE_ICONIC)
 705         {
 706             luaA_object_push(globalconf.L, c);
 707             client_set_minimized(globalconf.L, -1, true);
 708             lua_pop(globalconf.L, 1);
 709         }
 710     }
 711     else if(ev->type == _XEMBED)
 712         xembed_process_client_message(ev);
 713     else if(ev->type == _NET_SYSTEM_TRAY_OPCODE)
 714         systray_process_client_message(ev);
 715     else
 716         ewmh_process_client_message(ev);
 717 }
 718
 719 /** The keymap change notify event handler.
 720  * \param ev The event.
 721  */
 722 static void
 723 event_handle_mappingnotify(xcb_mapping_notify_event_t *ev)
 724 {
 725     if(ev->request == XCB_MAPPING_MODIFIER
 726        || ev->request == XCB_MAPPING_KEYBOARD)
 727     {
 728         xcb_get_modifier_mapping_cookie_t xmapping_cookie =
 729             xcb_get_modifier_mapping_unchecked(globalconf.connection);
 730
 731         /* Free and then allocate the key symbols */
 732         xcb_key_symbols_free(globalconf.keysyms);
 733         globalconf.keysyms = xcb_key_symbols_alloc(globalconf.connection);
 734
 735         xutil_lock_mask_get(globalconf.connection, xmapping_cookie,
 736                             globalconf.keysyms, &globalconf.numlockmask,
 737                             &globalconf.shiftlockmask, &globalconf.capslockmask,
 738                             &globalconf.modeswitchmask);
 739
 740         /* regrab everything */
 741         xcb_screen_t *s = globalconf.screen;
 742         /* yes XCB_BUTTON_MASK_ANY is also for grab_key even if it's look weird */
 743         xcb_ungrab_key(globalconf.connection, XCB_GRAB_ANY, s->root, XCB_BUTTON_MASK_ANY);
 744         xwindow_grabkeys(s->root, &globalconf.keys);
 745
 746         foreach(_c, globalconf.clients)
 747         {
 748             client_t *c = *_c;
 749             xcb_ungrab_key(globalconf.connection, XCB_GRAB_ANY, c->frame_window, XCB_BUTTON_MASK_ANY);
 750             xwindow_grabkeys(c->frame_window, &c->keys);
 751         }
 752     }
 753 }
 754
 755 static void
 756 event_handle_reparentnotify(xcb_reparent_notify_event_t *ev)
 757 {
 758     client_t *c;
 759
 760     if((c = client_getbywin(ev->window)) && c->frame_window != ev->parent)
 761     {
 762         /* Ignore reparents to the root window, they *might* be caused by
 763          * ourselves if a client quickly unmaps and maps itself again. */
 764         if (ev->parent != globalconf.screen->root)
 765             client_unmanage(c, true);
 766     }
 767 }
 768
 769 /** \brief awesome xerror function.
 770  * There's no way to check accesses to destroyed windows, thus those cases are
 771  * ignored (especially on UnmapNotify's).
 772  * \param e The error event.
 773  */
 774 static void
 775 xerror(xcb_generic_error_t *e)
 776 {
 777     /* ignore this */
 778     if(e->error_code == XCB_WINDOW
 779        || (e->error_code == XCB_MATCH
 780            && e->major_code == XCB_SET_INPUT_FOCUS)
 781        || (e->error_code == XCB_VALUE
 782            && e->major_code == XCB_KILL_CLIENT)
 783        || (e->error_code == XCB_MATCH
 784            && e->major_code == XCB_CONFIGURE_WINDOW))
 785         return;
 786
 787     warn("X error: request=%s (major %d, minor %d), error=%s (%d)",
 788          xcb_event_get_request_label(e->major_code),
 789          e->major_code, e->minor_code,
 790          xcb_event_get_error_label(e->error_code),
 791          e->error_code);
 792
 793     return;
 794 }
 795
 796 void event_handle(xcb_generic_event_t *event)
 797 {
 798     uint8_t response_type = XCB_EVENT_RESPONSE_TYPE(event);
 799
 800     if(response_type == 0)
 801     {
 802         /* This is an error, not a event */
 803         xerror((xcb_generic_error_t *) event);
 804         return;
 805     }
 806
 807     switch(response_type)
 808     {
 809 #define EVENT(type, callback) case type: callback((void *) event); return
 810         EVENT(XCB_BUTTON_PRESS, event_handle_button);
 811         EVENT(XCB_BUTTON_RELEASE, event_handle_button);
 812         EVENT(XCB_CONFIGURE_REQUEST, event_handle_configurerequest);
 813         EVENT(XCB_CONFIGURE_NOTIFY, event_handle_configurenotify);
 814         EVENT(XCB_DESTROY_NOTIFY, event_handle_destroynotify);
 815         EVENT(XCB_ENTER_NOTIFY, event_handle_enternotify);
 816         EVENT(XCB_CLIENT_MESSAGE, event_handle_clientmessage);
 817         EVENT(XCB_EXPOSE, event_handle_expose);
 818         EVENT(XCB_FOCUS_IN, event_handle_focusin);
 819         EVENT(XCB_KEY_PRESS, event_handle_key);
 820         EVENT(XCB_KEY_RELEASE, event_handle_key);
 821         EVENT(XCB_LEAVE_NOTIFY, event_handle_leavenotify);
 822         EVENT(XCB_MAPPING_NOTIFY, event_handle_mappingnotify);
 823         EVENT(XCB_MAP_REQUEST, event_handle_maprequest);
 824         EVENT(XCB_MOTION_NOTIFY, event_handle_motionnotify);
 825         EVENT(XCB_PROPERTY_NOTIFY, property_handle_propertynotify);
 826         EVENT(XCB_REPARENT_NOTIFY, event_handle_reparentnotify);
 827         EVENT(XCB_UNMAP_NOTIFY, event_handle_unmapnotify);
 828 #undef EVENT
 829     }
 830
 831     static uint8_t randr_screen_change_notify = 0;
 832
 833     if(randr_screen_change_notify == 0)
 834     {
 835         /* check for randr extension */
 836         const xcb_query_extension_reply_t *randr_query;
 837         randr_query = xcb_get_extension_data(globalconf.connection, &xcb_randr_id);
 838         if(randr_query->present)
 839             randr_screen_change_notify = randr_query->first_event + XCB_RANDR_SCREEN_CHANGE_NOTIFY;
 840     }
 841
 842     if (response_type == randr_screen_change_notify)
 843         event_handle_randr_screen_change_notify((void *) event);
 844 }
 845
 846 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80