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 "event.h"
  23 #include "awesome.h"
  24 #include "property.h"
  25 #include "objects/tag.h"
  26 #include "objects/drawin.h"
  27 #include "xwindow.h"
  28 #include "ewmh.h"
  29 #include "objects/client.h"
  30 #include "keyresolv.h"
  31 #include "keygrabber.h"
  32 #include "mousegrabber.h"
  33 #include "luaa.h"
  34 #include "systray.h"
  35 #include "objects/screen.h"
  36 #include "common/atoms.h"
  37 #include "common/xutil.h"
  38
  39 #include <xcb/xcb.h>
  40 #include <xcb/randr.h>
  41 #include <xcb/shape.h>
  42 #include <xcb/xcb_atom.h>
  43 #include <xcb/xcb_icccm.h>
  44 #include <xcb/xcb_event.h>
  45
  46 #define DO_EVENT_HOOK_CALLBACK(type, xcbtype, xcbeventprefix, arraytype, match) \
  47     static void \
  48     event_##xcbtype##_callback(xcb_##xcbtype##_press_event_t *ev, \
  49                                arraytype *arr, \
  50                                int oud, \
  51                                int nargs, \
  52                                void *data) \
  53     { \
  54         int abs_oud = oud < 0 ? ((lua_gettop(globalconf.L) + 1) + oud) : oud; \
  55         int item_matching = 0; \
  56         foreach(item, *arr) \
  57             if(match(ev, *item, data)) \
  58             { \
  59                 if(oud) \
  60                     luaA_object_push_item(globalconf.L, abs_oud, *item); \
  61                 else \
  62                     luaA_object_push(globalconf.L, *item); \
  63                 item_matching++; \
  64             } \
  65         for(; item_matching > 0; item_matching--) \
  66         { \
  67             switch(ev->response_type) \
  68             { \
  69               case xcbeventprefix##_PRESS: \
  70                 for(int i = 0; i < nargs; i++) \
  71                     lua_pushvalue(globalconf.L, - nargs - item_matching); \
  72                 luaA_object_emit_signal(globalconf.L, - nargs - 1, "press", nargs); \
  73                 break; \
  74               case xcbeventprefix##_RELEASE: \
  75                 for(int i = 0; i < nargs; i++) \
  76                     lua_pushvalue(globalconf.L, - nargs - item_matching); \
  77                 luaA_object_emit_signal(globalconf.L, - nargs - 1, "release", nargs); \
  78                 break; \
  79             } \
  80             lua_pop(globalconf.L, 1); \
  81         } \
  82         lua_pop(globalconf.L, nargs); \
  83     }
  84
  85 static bool
  86 event_key_match(xcb_key_press_event_t *ev, keyb_t *k, void *data)
  87 {
  88     assert(data);
  89     xcb_keysym_t keysym = *(xcb_keysym_t *) data;
  90     return (((k->keycode && ev->detail == k->keycode)
  91              || (k->keysym && keysym == k->keysym))
  92             && (k->modifiers == XCB_BUTTON_MASK_ANY || k->modifiers == ev->state));
  93 }
  94
  95 static bool
  96 event_button_match(xcb_button_press_event_t *ev, button_t *b, void *data)
  97 {
  98     return ((!b->button || ev->detail == b->button)
  99             && (b->modifiers == XCB_BUTTON_MASK_ANY || b->modifiers == ev->state));
 100 }
 101
 102 DO_EVENT_HOOK_CALLBACK(button_t, button, XCB_BUTTON, button_array_t, event_button_match)
 103 DO_EVENT_HOOK_CALLBACK(keyb_t, key, XCB_KEY, key_array_t, event_key_match)
 104
 105 /** Handle an event with mouse grabber if needed
 106  * \param x The x coordinate.
 107  * \param y The y coordinate.
 108  * \param mask The mask buttons.
 109  * \return True if the event was handled.
 110  */
 111 static bool
 112 event_handle_mousegrabber(int x, int y, uint16_t mask)
 113 {
 114     if(globalconf.mousegrabber != LUA_REFNIL)
 115     {
 116         lua_rawgeti(globalconf.L, LUA_REGISTRYINDEX, globalconf.mousegrabber);
 117         mousegrabber_handleevent(globalconf.L, x, y, mask);
 118         if(lua_pcall(globalconf.L, 1, 1, 0))
 119         {
 120             warn("error running function: %s", lua_tostring(globalconf.L, -1));
 121             luaA_mousegrabber_stop(globalconf.L);
 122         }
 123         else if(!lua_isboolean(globalconf.L, -1) || !lua_toboolean(globalconf.L, -1))
 124             luaA_mousegrabber_stop(globalconf.L);
 125         lua_pop(globalconf.L, 1);  /* pop returned value */
 126         return true;
 127     }
 128     return false;
 129 }
 130
 131 /** Emit a button signal.
 132  * The top of the lua stack has to be the object on which to emit the event.
 133  * \param ev The event to handle.
 134  */
 135 static void
 136 event_emit_button(xcb_button_press_event_t *ev)
 137 {
 138     const char *name;
 139     switch(XCB_EVENT_RESPONSE_TYPE(ev))
 140     {
 141     case XCB_BUTTON_PRESS:
 142         name = "button::press";
 143         break;
 144     case XCB_BUTTON_RELEASE:
 145         name = "button::release";
 146         break;
 147     default:
 148         fatal("Invalid event type");
 149     }
 150
 151     /* Push the event's info */
 152     lua_pushnumber(globalconf.L, ev->event_x);
 153     lua_pushnumber(globalconf.L, ev->event_y);
 154     lua_pushnumber(globalconf.L, ev->detail);
 155     luaA_pushmodifiers(globalconf.L, ev->state);
 156     /* And emit the signal */
 157     luaA_object_emit_signal(globalconf.L, -5, name, 4);
 158 }
 159
 160 /** The button press event handler.
 161  * \param ev The event.
 162  */
 163 static void
 164 event_handle_button(xcb_button_press_event_t *ev)
 165 {
 166     client_t *c;
 167     drawin_t *drawin;
 168
 169     globalconf.timestamp = ev->time;
 170
 171     if(event_handle_mousegrabber(ev->root_x, ev->root_y, 1 << (ev->detail - 1 + 8)))
 172         return;
 173
 174     /* ev->state is
 175      * button status (8 bits) + modifiers status (8 bits)
 176      * we don't care for button status that we get, especially on release, so
 177      * drop them */
 178     ev->state &= 0x00ff;
 179
 180     if((drawin = drawin_getbywin(ev->event))
 181        || (drawin = drawin_getbywin(ev->child)))
 182     {
 183         /* If the drawin is child, then x,y are
 184          * relative to root window */
 185         if(drawin->window == ev->child)
 186         {
 187             ev->event_x -= drawin->geometry.x + drawin->border_width;
 188             ev->event_y -= drawin->geometry.y + drawin->border_width;
 189         }
 190
 191         /* Push the drawable */
 192         luaA_object_push(globalconf.L, drawin);
 193         luaA_object_push_item(globalconf.L, -1, drawin->drawable);
 194         /* and handle the button raw button event */
 195         event_emit_button(ev);
 196         lua_pop(globalconf.L, 1);
 197         /* check if any button object matches */
 198         event_button_callback(ev, &drawin->buttons, -1, 1, NULL);
 199     }
 200     else if((c = client_getbyframewin(ev->event)))
 201     {
 202         luaA_object_push(globalconf.L, c);
 203         /* And handle the button raw button event */
 204         event_emit_button(ev);
 205         /* then check if a titlebar was "hit" */
 206         int x = ev->event_x, y = ev->event_y;
 207         drawable_t *d = client_get_drawable_offset(c, &x, &y);
 208         if (d)
 209         {
 210             /* Copy the event so that we can fake x/y */
 211             xcb_button_press_event_t event = *ev;
 212             event.event_x = x;
 213             event.event_y = y;
 214             luaA_object_push_item(globalconf.L, -1, d);
 215             event_emit_button(&event);
 216             lua_pop(globalconf.L, 1);
 217         }
 218         /* then check if any button objects match */
 219         event_button_callback(ev, &c->buttons, -1, 1, NULL);
 220         xcb_allow_events(globalconf.connection,
 221                          XCB_ALLOW_REPLAY_POINTER,
 222                          XCB_CURRENT_TIME);
 223     }
 224     else if(ev->child == XCB_NONE)
 225         if(globalconf.screen->root == ev->event)
 226         {
 227             event_button_callback(ev, &globalconf.buttons, 0, 0, NULL);
 228             return;
 229         }
 230 }
 231
 232 static void
 233 event_handle_configurerequest_configure_window(xcb_configure_request_event_t *ev)
 234 {
 235     uint16_t config_win_mask = 0;
 236     uint32_t config_win_vals[7];
 237     unsigned short i = 0;
 238
 239     if(ev->value_mask & XCB_CONFIG_WINDOW_X)
 240     {
 241         config_win_mask |= XCB_CONFIG_WINDOW_X;
 242         config_win_vals[i++] = ev->x;
 243     }
 244     if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
 245     {
 246         config_win_mask |= XCB_CONFIG_WINDOW_Y;
 247         config_win_vals[i++] = ev->y;
 248     }
 249     if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
 250     {
 251         config_win_mask |= XCB_CONFIG_WINDOW_WIDTH;
 252         config_win_vals[i++] = ev->width;
 253     }
 254     if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
 255     {
 256         config_win_mask |= XCB_CONFIG_WINDOW_HEIGHT;
 257         config_win_vals[i++] = ev->height;
 258     }
 259     if(ev->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH)
 260     {
 261         config_win_mask |= XCB_CONFIG_WINDOW_BORDER_WIDTH;
 262         config_win_vals[i++] = ev->border_width;
 263     }
 264     if(ev->value_mask & XCB_CONFIG_WINDOW_SIBLING)
 265     {
 266         config_win_mask |= XCB_CONFIG_WINDOW_SIBLING;
 267         config_win_vals[i++] = ev->sibling;
 268     }
 269     if(ev->value_mask & XCB_CONFIG_WINDOW_STACK_MODE)
 270     {
 271         config_win_mask |= XCB_CONFIG_WINDOW_STACK_MODE;
 272         config_win_vals[i++] = ev->stack_mode;
 273     }
 274
 275     xcb_configure_window(globalconf.connection, ev->window, config_win_mask, config_win_vals);
 276 }
 277
 278 /** The configure event handler.
 279  * \param ev The event.
 280  */
 281 static void
 282 event_handle_configurerequest(xcb_configure_request_event_t *ev)
 283 {
 284     client_t *c;
 285
 286     if((c = client_getbywin(ev->window)))
 287     {
 288         area_t geometry = c->geometry;
 289         int16_t diff_w = 0, diff_h = 0, diff_border = 0;
 290
 291         if(ev->value_mask & XCB_CONFIG_WINDOW_X)
 292             geometry.x = ev->x;
 293         if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
 294             geometry.y = ev->y;
 295         if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
 296         {
 297             uint16_t old_w = geometry.width;
 298             geometry.width = ev->width;
 299             /* The ConfigureRequest specifies the size of the client window, we want the frame */
 300             geometry.width += c->titlebar[CLIENT_TITLEBAR_LEFT].size;
 301             geometry.width += c->titlebar[CLIENT_TITLEBAR_RIGHT].size;
 302             diff_w = geometry.width - old_w;
 303         }
 304         if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
 305         {
 306             uint16_t old_h = geometry.height;
 307             geometry.height = ev->height;
 308             /* The ConfigureRequest specifies the size of the client window, we want the frame */
 309             geometry.height += c->titlebar[CLIENT_TITLEBAR_TOP].size;
 310             geometry.height += c->titlebar[CLIENT_TITLEBAR_BOTTOM].size;
 311             diff_h = geometry.height - old_h;
 312         }
 313         if(ev->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH)
 314         {
 315             diff_border = ev->border_width - c->border_width;
 316             diff_h += diff_border;
 317             diff_w += diff_border;
 318
 319             luaA_object_push(globalconf.L, c);
 320             window_set_border_width(globalconf.L, -1, ev->border_width);
 321             lua_pop(globalconf.L, 1);
 322         }
 323
 324         /* If the client resizes without moving itself, apply window gravity */
 325         if(c->size_hints.flags & XCB_ICCCM_SIZE_HINT_P_WIN_GRAVITY)
 326         {
 327             int16_t diff_x = 0, diff_y = 0;
 328             xwindow_translate_for_gravity(c->size_hints.win_gravity, diff_border, diff_border, diff_w, diff_h, &diff_x, &diff_y);
 329             if(!(ev->value_mask & XCB_CONFIG_WINDOW_X))
 330                 geometry.x += diff_x;
 331             if(!(ev->value_mask & XCB_CONFIG_WINDOW_Y))
 332                 geometry.y += diff_y;
 333         }
 334
 335         if(!client_resize(c, geometry, false))
 336             /* ICCCM 4.1.5 / 4.2.3, if nothing was changed, send an event saying so */
 337             client_send_configure(c);
 338     }
 339     else
 340         event_handle_configurerequest_configure_window(ev);
 341 }
 342
 343 /** The configure notify event handler.
 344  * \param ev The event.
 345  */
 346 static void
 347 event_handle_configurenotify(xcb_configure_notify_event_t *ev)
 348 {
 349     const xcb_screen_t *screen = globalconf.screen;
 350
 351     if(ev->window == screen->root
 352        && (ev->width != screen->width_in_pixels
 353            || ev->height != screen->height_in_pixels))
 354         /* it's not that we panic, but restart */
 355         awesome_restart();
 356 }
 357
 358 /** The destroy notify event handler.
 359  * \param ev The event.
 360  */
 361 static void
 362 event_handle_destroynotify(xcb_destroy_notify_event_t *ev)
 363 {
 364     client_t *c;
 365
 366     if((c = client_getbywin(ev->window)))
 367         client_unmanage(c, false);
 368     else
 369         for(int i = 0; i < globalconf.embedded.len; i++)
 370             if(globalconf.embedded.tab[i].win == ev->window)
 371             {
 372                 xembed_window_array_take(&globalconf.embedded, i);
 373                 luaA_systray_invalidate();
 374             }
 375 }
 376
 377 /** The motion notify event handler.
 378  * \param ev The event.
 379  */
 380 static void
 381 event_handle_motionnotify(xcb_motion_notify_event_t *ev)
 382 {
 383     drawin_t *w;
 384     client_t *c;
 385
 386     globalconf.timestamp = ev->time;
 387
 388     if(event_handle_mousegrabber(ev->root_x, ev->root_y, ev->state))
 389         return;
 390
 391     if((c = client_getbyframewin(ev->event)))
 392     {
 393         luaA_object_push(globalconf.L, c);
 394         lua_pushnumber(globalconf.L, ev->event_x);
 395         lua_pushnumber(globalconf.L, ev->event_y);
 396         luaA_object_emit_signal(globalconf.L, -3, "mouse::move", 2);
 397
 398         /* now check if a titlebar was "hit" */
 399         int x = ev->event_x, y = ev->event_y;
 400         drawable_t *d = client_get_drawable_offset(c, &x, &y);
 401         if (d)
 402         {
 403             luaA_object_push_item(globalconf.L, -1, d);
 404             lua_pushnumber(globalconf.L, x);
 405             lua_pushnumber(globalconf.L, y);
 406             luaA_object_emit_signal(globalconf.L, -3, "mouse::move", 2);
 407             lua_pop(globalconf.L, 1);
 408         }
 409         lua_pop(globalconf.L, 1);
 410     }
 411
 412     if((w = drawin_getbywin(ev->event)))
 413     {
 414         luaA_object_push(globalconf.L, w);
 415         luaA_object_push_item(globalconf.L, -1, w->drawable);
 416         lua_pushnumber(globalconf.L, ev->event_x);
 417         lua_pushnumber(globalconf.L, ev->event_y);
 418         luaA_object_emit_signal(globalconf.L, -3, "mouse::move", 2);
 419         lua_pop(globalconf.L, 2);
 420     }
 421 }
 422
 423 /** The leave notify event handler.
 424  * \param ev The event.
 425  */
 426 static void
 427 event_handle_leavenotify(xcb_leave_notify_event_t *ev)
 428 {
 429     drawin_t *drawin;
 430     client_t *c;
 431
 432     globalconf.timestamp = ev->time;
 433
 434     if(ev->mode != XCB_NOTIFY_MODE_NORMAL)
 435         return;
 436
 437     if((c = client_getbyframewin(ev->event)))
 438     {
 439         luaA_object_push(globalconf.L, c);
 440         luaA_object_emit_signal(globalconf.L, -1, "mouse::leave", 0);
 441         drawable_t *d = client_get_drawable(c, ev->event_x, ev->event_y);
 442         if (d)
 443         {
 444             luaA_object_push_item(globalconf.L, -1, d);
 445             luaA_object_emit_signal(globalconf.L, -1, "mouse::leave", 0);
 446             lua_pop(globalconf.L, 1);
 447         }
 448         lua_pop(globalconf.L, 1);
 449     }
 450
 451     if((drawin = drawin_getbywin(ev->event)))
 452     {
 453         luaA_object_push(globalconf.L, drawin);
 454         luaA_object_push_item(globalconf.L, -1, drawin->drawable);
 455         luaA_object_emit_signal(globalconf.L, -1, "mouse::leave", 0);
 456         lua_pop(globalconf.L, 2);
 457     }
 458 }
 459
 460 /** The enter notify event handler.
 461  * \param ev The event.
 462  */
 463 static void
 464 event_handle_enternotify(xcb_enter_notify_event_t *ev)
 465 {
 466     client_t *c;
 467     drawin_t *drawin;
 468
 469     globalconf.timestamp = ev->time;
 470
 471     if(ev->mode != XCB_NOTIFY_MODE_NORMAL)
 472         return;
 473
 474     if((drawin = drawin_getbywin(ev->event)))
 475     {
 476         luaA_object_push(globalconf.L, drawin);
 477         luaA_object_push_item(globalconf.L, -1, drawin->drawable);
 478         luaA_object_emit_signal(globalconf.L, -1, "mouse::enter", 0);
 479         lua_pop(globalconf.L, 2);
 480     }
 481
 482     if((c = client_getbyframewin(ev->event)))
 483     {
 484         luaA_object_push(globalconf.L, c);
 485         luaA_object_emit_signal(globalconf.L, -1, "mouse::enter", 0);
 486         drawable_t *d = client_get_drawable(c, ev->event_x, ev->event_y);
 487         if (d)
 488         {
 489             luaA_object_push_item(globalconf.L, -1, d);
 490             luaA_object_emit_signal(globalconf.L, -1, "mouse::enter", 0);
 491             lua_pop(globalconf.L, 1);
 492         }
 493         lua_pop(globalconf.L, 1);
 494     }
 495 }
 496
 497 /** The focus in event handler.
 498  * \param ev The event.
 499  */
 500 static void
 501 event_handle_focusin(xcb_focus_in_event_t *ev)
 502 {
 503     if (ev->mode == XCB_NOTIFY_MODE_GRAB
 504             || ev->mode == XCB_NOTIFY_MODE_UNGRAB)
 505         /* Ignore focus changes due to keyboard grabs */
 506         return;
 507
 508     /* Events that we are interested in: */
 509     switch(ev->detail)
 510     {
 511         /* These are events that jump between root windows.
 512          */
 513         case XCB_NOTIFY_DETAIL_ANCESTOR:
 514         case XCB_NOTIFY_DETAIL_INFERIOR:
 515
 516         /* These are events that jump between clients.
 517          * Virtual events ensure we always get an event on our top-level window.
 518          */
 519         case XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL:
 520         case XCB_NOTIFY_DETAIL_NONLINEAR:
 521           {
 522             client_t *c;
 523
 524             if((c = client_getbywin(ev->event))) {
 525                 /* If there is still a pending focus change, do it now. */
 526                 client_focus_refresh();
 527                 client_focus_update(c);
 528             }
 529           }
 530         /* all other events are ignored */
 531         default:
 532             break;
 533     }
 534 }
 535
 536 /** The expose event handler.
 537  * \param ev The event.
 538  */
 539 static void
 540 event_handle_expose(xcb_expose_event_t *ev)
 541 {
 542     drawin_t *drawin;
 543     client_t *client;
 544
 545     if((drawin = drawin_getbywin(ev->window)))
 546         drawin_refresh_pixmap_partial(drawin,
 547                                       ev->x, ev->y,
 548                                       ev->width, ev->height);
 549     if ((client = client_getbyframewin(ev->window)))
 550         client_refresh_partial(client, ev->x, ev->y, ev->width, ev->height);
 551 }
 552
 553 /** The key press event handler.
 554  * \param ev The event.
 555  */
 556 static void
 557 event_handle_key(xcb_key_press_event_t *ev)
 558 {
 559     globalconf.timestamp = ev->time;
 560
 561     if(globalconf.keygrabber != LUA_REFNIL)
 562     {
 563         lua_rawgeti(globalconf.L, LUA_REGISTRYINDEX, globalconf.keygrabber);
 564         if(keygrabber_handlekpress(globalconf.L, ev))
 565         {
 566             if(lua_pcall(globalconf.L, 3, 1, 0))
 567             {
 568                 warn("error running function: %s", lua_tostring(globalconf.L, -1));
 569                 luaA_keygrabber_stop(globalconf.L);
 570             }
 571         }
 572         lua_pop(globalconf.L, 1);  /* pop returned value or function if not called */
 573     }
 574     else
 575     {
 576         /* get keysym ignoring all modifiers */
 577         xcb_keysym_t keysym = keyresolv_get_keysym(ev->detail, 0);
 578         client_t *c;
 579         if((c = client_getbyframewin(ev->event)))
 580         {
 581             luaA_object_push(globalconf.L, c);
 582             event_key_callback(ev, &c->keys, -1, 1, &keysym);
 583         }
 584         else
 585             event_key_callback(ev, &globalconf.keys, 0, 0, &keysym);
 586     }
 587 }
 588
 589 /** The map request event handler.
 590  * \param ev The event.
 591  */
 592 static void
 593 event_handle_maprequest(xcb_map_request_event_t *ev)
 594 {
 595     client_t *c;
 596     xcb_get_window_attributes_cookie_t wa_c;
 597     xcb_get_window_attributes_reply_t *wa_r;
 598     xcb_get_geometry_cookie_t geom_c;
 599     xcb_get_geometry_reply_t *geom_r;
 600
 601     wa_c = xcb_get_window_attributes_unchecked(globalconf.connection, ev->window);
 602
 603     if(!(wa_r = xcb_get_window_attributes_reply(globalconf.connection, wa_c, NULL)))
 604         return;
 605
 606     if(wa_r->override_redirect)
 607         goto bailout;
 608
 609     if(xembed_getbywin(&globalconf.embedded, ev->window))
 610     {
 611         xcb_map_window(globalconf.connection, ev->window);
 612         xembed_window_activate(globalconf.connection, ev->window);
 613     }
 614     else if((c = client_getbywin(ev->window)))
 615     {
 616         /* Check that it may be visible, but not asked to be hidden */
 617         if(client_maybevisible(c) && !c->hidden)
 618         {
 619             luaA_object_push(globalconf.L, c);
 620             client_set_minimized(globalconf.L, -1, false);
 621             lua_pop(globalconf.L, 1);
 622             /* it will be raised, so just update ourself */
 623             client_raise(c);
 624         }
 625     }
 626     else
 627     {
 628         geom_c = xcb_get_geometry_unchecked(globalconf.connection, ev->window);
 629
 630         if(!(geom_r = xcb_get_geometry_reply(globalconf.connection, geom_c, NULL)))
 631         {
 632             goto bailout;
 633         }
 634
 635         client_manage(ev->window, geom_r, wa_r);
 636
 637         p_delete(&geom_r);
 638     }
 639
 640 bailout:
 641     p_delete(&wa_r);
 642 }
 643
 644 /** The unmap notify event handler.
 645  * \param ev The event.
 646  */
 647 static void
 648 event_handle_unmapnotify(xcb_unmap_notify_event_t *ev)
 649 {
 650     client_t *c;
 651
 652     if((c = client_getbywin(ev->window)))
 653         client_unmanage(c, true);
 654     else
 655         for(int i = 0; i < globalconf.embedded.len; i++)
 656             if(globalconf.embedded.tab[i].win == ev->window)
 657             {
 658                 xembed_window_array_take(&globalconf.embedded, i);
 659                 xcb_change_save_set(globalconf.connection, XCB_SET_MODE_DELETE, ev->window);
 660                 luaA_systray_invalidate();
 661             }
 662 }
 663
 664 /** The randr screen change notify event handler.
 665  * \param ev The event.
 666  */
 667 static void
 668 event_handle_randr_screen_change_notify(xcb_randr_screen_change_notify_event_t *ev)
 669 {
 670     /* Code  of  XRRUpdateConfiguration Xlib  function  ported to  XCB
 671      * (only the code relevant  to RRScreenChangeNotify) as the latter
 672      * doesn't provide this kind of function */
 673     if(ev->rotation & (XCB_RANDR_ROTATION_ROTATE_90 | XCB_RANDR_ROTATION_ROTATE_270))
 674         xcb_randr_set_screen_size(globalconf.connection, ev->root, ev->height, ev->width,
 675                                   ev->mheight, ev->mwidth);
 676     else
 677         xcb_randr_set_screen_size(globalconf.connection, ev->root, ev->width, ev->height,
 678                                   ev->mwidth, ev->mheight);
 679
 680     /* XRRUpdateConfiguration also executes the following instruction
 681      * but it's not useful because SubpixelOrder is not used at all at
 682      * the moment
 683      *
 684      * XRenderSetSubpixelOrder(dpy, snum, scevent->subpixel_order);
 685      */
 686
 687     awesome_restart();
 688 }
 689
 690 /** The shape notify event handler.
 691  * \param ev The event.
 692  */
 693 static void
 694 event_handle_shape_notify(xcb_shape_notify_event_t *ev)
 695 {
 696     client_t *c = client_getbywin(ev->affected_window);
 697     if (c)
 698     {
 699         luaA_object_push(globalconf.L, c);
 700         if (ev->shape_kind == XCB_SHAPE_SK_BOUNDING)
 701             luaA_object_emit_signal(globalconf.L, -1, "property::shape_client_bounding", 0);
 702         if (ev->shape_kind == XCB_SHAPE_SK_CLIP)
 703             luaA_object_emit_signal(globalconf.L, -1, "property::shape_client_clip", 0);
 704         lua_pop(globalconf.L, 1);
 705     }
 706 }
 707
 708 /** The client message event handler.
 709  * \param ev The event.
 710  */
 711 static void
 712 event_handle_clientmessage(xcb_client_message_event_t *ev)
 713 {
 714     /* check for startup notification messages */
 715     if(sn_xcb_display_process_event(globalconf.sndisplay, (xcb_generic_event_t *) ev))
 716         return;
 717
 718     if(ev->type == WM_CHANGE_STATE)
 719     {
 720         client_t *c;
 721         if((c = client_getbywin(ev->window))
 722            && ev->format == 32
 723            && ev->data.data32[0] == XCB_ICCCM_WM_STATE_ICONIC)
 724         {
 725             luaA_object_push(globalconf.L, c);
 726             client_set_minimized(globalconf.L, -1, true);
 727             lua_pop(globalconf.L, 1);
 728         }
 729     }
 730     else if(ev->type == _XEMBED)
 731         xembed_process_client_message(ev);
 732     else if(ev->type == _NET_SYSTEM_TRAY_OPCODE)
 733         systray_process_client_message(ev);
 734     else
 735         ewmh_process_client_message(ev);
 736 }
 737
 738 /** The keymap change notify event handler.
 739  * \param ev The event.
 740  */
 741 static void
 742 event_handle_mappingnotify(xcb_mapping_notify_event_t *ev)
 743 {
 744     if(ev->request == XCB_MAPPING_MODIFIER
 745        || ev->request == XCB_MAPPING_KEYBOARD)
 746     {
 747         xcb_get_modifier_mapping_cookie_t xmapping_cookie =
 748             xcb_get_modifier_mapping_unchecked(globalconf.connection);
 749
 750         /* Free and then allocate the key symbols */
 751         xcb_key_symbols_free(globalconf.keysyms);
 752         globalconf.keysyms = xcb_key_symbols_alloc(globalconf.connection);
 753
 754         xutil_lock_mask_get(globalconf.connection, xmapping_cookie,
 755                             globalconf.keysyms, &globalconf.numlockmask,
 756                             &globalconf.shiftlockmask, &globalconf.capslockmask,
 757                             &globalconf.modeswitchmask);
 758
 759         /* regrab everything */
 760         xcb_screen_t *s = globalconf.screen;
 761         /* yes XCB_BUTTON_MASK_ANY is also for grab_key even if it's look weird */
 762         xcb_ungrab_key(globalconf.connection, XCB_GRAB_ANY, s->root, XCB_BUTTON_MASK_ANY);
 763         xwindow_grabkeys(s->root, &globalconf.keys);
 764
 765         foreach(_c, globalconf.clients)
 766         {
 767             client_t *c = *_c;
 768             xcb_ungrab_key(globalconf.connection, XCB_GRAB_ANY, c->frame_window, XCB_BUTTON_MASK_ANY);
 769             xwindow_grabkeys(c->frame_window, &c->keys);
 770         }
 771     }
 772 }
 773
 774 static void
 775 event_handle_reparentnotify(xcb_reparent_notify_event_t *ev)
 776 {
 777     client_t *c;
 778
 779     if((c = client_getbywin(ev->window)) && c->frame_window != ev->parent)
 780     {
 781         /* Ignore reparents to the root window, they *might* be caused by
 782          * ourselves if a client quickly unmaps and maps itself again. */
 783         if (ev->parent != globalconf.screen->root)
 784             client_unmanage(c, true);
 785     }
 786 }
 787
 788 /** \brief awesome xerror function.
 789  * There's no way to check accesses to destroyed windows, thus those cases are
 790  * ignored (especially on UnmapNotify's).
 791  * \param e The error event.
 792  */
 793 static void
 794 xerror(xcb_generic_error_t *e)
 795 {
 796     /* ignore this */
 797     if(e->error_code == XCB_WINDOW
 798        || (e->error_code == XCB_MATCH
 799            && e->major_code == XCB_SET_INPUT_FOCUS)
 800        || (e->error_code == XCB_VALUE
 801            && e->major_code == XCB_KILL_CLIENT)
 802        || (e->error_code == XCB_MATCH
 803            && e->major_code == XCB_CONFIGURE_WINDOW))
 804         return;
 805
 806     warn("X error: request=%s (major %d, minor %d), error=%s (%d)",
 807          xcb_event_get_request_label(e->major_code),
 808          e->major_code, e->minor_code,
 809          xcb_event_get_error_label(e->error_code),
 810          e->error_code);
 811
 812     return;
 813 }
 814
 815 void event_handle(xcb_generic_event_t *event)
 816 {
 817     uint8_t response_type = XCB_EVENT_RESPONSE_TYPE(event);
 818
 819     if(response_type == 0)
 820     {
 821         /* This is an error, not a event */
 822         xerror((xcb_generic_error_t *) event);
 823         return;
 824     }
 825
 826     switch(response_type)
 827     {
 828 #define EVENT(type, callback) case type: callback((void *) event); return
 829         EVENT(XCB_BUTTON_PRESS, event_handle_button);
 830         EVENT(XCB_BUTTON_RELEASE, event_handle_button);
 831         EVENT(XCB_CONFIGURE_REQUEST, event_handle_configurerequest);
 832         EVENT(XCB_CONFIGURE_NOTIFY, event_handle_configurenotify);
 833         EVENT(XCB_DESTROY_NOTIFY, event_handle_destroynotify);
 834         EVENT(XCB_ENTER_NOTIFY, event_handle_enternotify);
 835         EVENT(XCB_CLIENT_MESSAGE, event_handle_clientmessage);
 836         EVENT(XCB_EXPOSE, event_handle_expose);
 837         EVENT(XCB_FOCUS_IN, event_handle_focusin);
 838         EVENT(XCB_KEY_PRESS, event_handle_key);
 839         EVENT(XCB_KEY_RELEASE, event_handle_key);
 840         EVENT(XCB_LEAVE_NOTIFY, event_handle_leavenotify);
 841         EVENT(XCB_MAPPING_NOTIFY, event_handle_mappingnotify);
 842         EVENT(XCB_MAP_REQUEST, event_handle_maprequest);
 843         EVENT(XCB_MOTION_NOTIFY, event_handle_motionnotify);
 844         EVENT(XCB_PROPERTY_NOTIFY, property_handle_propertynotify);
 845         EVENT(XCB_REPARENT_NOTIFY, event_handle_reparentnotify);
 846         EVENT(XCB_UNMAP_NOTIFY, event_handle_unmapnotify);
 847 #undef EVENT
 848     }
 849
 850     static uint8_t randr_screen_change_notify = 0;
 851     static uint8_t shape_notify = 0;
 852
 853     if(randr_screen_change_notify == 0)
 854     {
 855         /* check for randr extension */
 856         const xcb_query_extension_reply_t *randr_query;
 857         randr_query = xcb_get_extension_data(globalconf.connection, &xcb_randr_id);
 858         if(randr_query->present)
 859             randr_screen_change_notify = randr_query->first_event + XCB_RANDR_SCREEN_CHANGE_NOTIFY;
 860     }
 861     if(shape_notify == 0)
 862     {
 863         /* check for shape extension */
 864         const xcb_query_extension_reply_t *shape_query;
 865         shape_query = xcb_get_extension_data(globalconf.connection, &xcb_shape_id);
 866         if(shape_query->present)
 867             shape_notify = shape_query->first_event + XCB_SHAPE_NOTIFY;
 868     }
 869
 870     if (response_type == randr_screen_change_notify)
 871         event_handle_randr_screen_change_notify((void *) event);
 872     if (response_type == shape_notify)
 873         event_handle_shape_notify((void *) event);
 874 }
 875
 876 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80