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 "property.h"
  33 #include "ewmh.h"
  34 #include "client.h"
  35 #include "widget.h"
  36 #include "titlebar.h"
  37 #include "key.h"
  38 #include "keygrabber.h"
  39 #include "mousegrabber.h"
  40 #include "luaa.h"
  41 #include "systray.h"
  42 #include "screen.h"
  43 #include "common/atoms.h"
  44 #include "common/xutil.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 /** The button press event handler.
 132  * \param ev The event.
 133  */
 134 static void
 135 event_handle_button(xcb_button_press_event_t *ev)
 136 {
 137     int screen;
 138     const int nb_screen = xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
 139     client_t *c;
 140     wibox_t *wibox;
 141
 142     globalconf.timestamp = ev->time;
 143
 144     if(event_handle_mousegrabber(ev->root_x, ev->root_y, 1 << (ev->detail - 1 + 8)))
 145         return;
 146
 147     /* ev->state is
 148      * button status (8 bits) + modifiers status (8 bits)
 149      * we don't care for button status that we get, especially on release, so
 150      * drop them */
 151     ev->state &= 0x00ff;
 152
 153     if((wibox = wibox_getbywin(ev->event))
 154        || (wibox = wibox_getbywin(ev->child)))
 155     {
 156         /* If the wibox is child, then x,y are
 157          * relative to root window */
 158         if(wibox->window == ev->child)
 159         {
 160             ev->event_x -= wibox->geometry.x;
 161             ev->event_y -= wibox->geometry.y;
 162         }
 163
 164         /* Push the wibox */
 165         luaA_object_push(globalconf.L, wibox);
 166         /* Duplicate the wibox */
 167         lua_pushvalue(globalconf.L, -1);
 168         /* Handle the button event on it */
 169         event_button_callback(ev, &wibox->buttons, -1, 1, NULL);
 170
 171         /* then try to match a widget binding */
 172         widget_t *w = widget_getbycoords(wibox->orientation, &wibox->widgets,
 173                                          wibox->geometry.width,
 174                                          wibox->geometry.height,
 175                                          &ev->event_x, &ev->event_y);
 176         if(w)
 177         {
 178             /* Push widget (the wibox is already on stack) */
 179             luaA_object_push_item(globalconf.L, -1, w);
 180             /* Move widget before wibox */
 181             lua_insert(globalconf.L, -2);
 182             event_button_callback(ev, &w->buttons, -2, 2, NULL);
 183         }
 184         else
 185             /* Remove the wibox, we did not use it */
 186             lua_pop(globalconf.L, 1);
 187
 188     }
 189     else if((c = client_getbywin(ev->event)))
 190     {
 191         luaA_object_push(globalconf.L, c);
 192         event_button_callback(ev, &c->buttons, -1, 1, NULL);
 193         xcb_allow_events(globalconf.connection,
 194                          XCB_ALLOW_REPLAY_POINTER,
 195                          XCB_CURRENT_TIME);
 196     }
 197     else if(ev->child == XCB_NONE)
 198         for(screen = 0; screen < nb_screen; screen++)
 199             if(xutil_screen_get(globalconf.connection, screen)->root == ev->event)
 200             {
 201                 event_button_callback(ev, &globalconf.buttons, 0, 0, NULL);
 202                 return;
 203             }
 204 }
 205
 206 static void
 207 event_handle_configurerequest_configure_window(xcb_configure_request_event_t *ev)
 208 {
 209     uint16_t config_win_mask = 0;
 210     uint32_t config_win_vals[7];
 211     unsigned short i = 0;
 212
 213     if(ev->value_mask & XCB_CONFIG_WINDOW_X)
 214     {
 215         config_win_mask |= XCB_CONFIG_WINDOW_X;
 216         config_win_vals[i++] = ev->x;
 217     }
 218     if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
 219     {
 220         config_win_mask |= XCB_CONFIG_WINDOW_Y;
 221         config_win_vals[i++] = ev->y;
 222     }
 223     if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
 224     {
 225         config_win_mask |= XCB_CONFIG_WINDOW_WIDTH;
 226         config_win_vals[i++] = ev->width;
 227     }
 228     if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
 229     {
 230         config_win_mask |= XCB_CONFIG_WINDOW_HEIGHT;
 231         config_win_vals[i++] = ev->height;
 232     }
 233     if(ev->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH)
 234     {
 235         config_win_mask |= XCB_CONFIG_WINDOW_BORDER_WIDTH;
 236         config_win_vals[i++] = ev->border_width;
 237     }
 238     if(ev->value_mask & XCB_CONFIG_WINDOW_SIBLING)
 239     {
 240         config_win_mask |= XCB_CONFIG_WINDOW_SIBLING;
 241         config_win_vals[i++] = ev->sibling;
 242     }
 243     if(ev->value_mask & XCB_CONFIG_WINDOW_STACK_MODE)
 244     {
 245         config_win_mask |= XCB_CONFIG_WINDOW_STACK_MODE;
 246         config_win_vals[i++] = ev->stack_mode;
 247     }
 248
 249     xcb_configure_window(globalconf.connection, ev->window, config_win_mask, config_win_vals);
 250 }
 251
 252 /** The configure event handler.
 253  * \param ev The event.
 254  */
 255 static void
 256 event_handle_configurerequest(xcb_configure_request_event_t *ev)
 257 {
 258     client_t *c;
 259     area_t geometry;
 260
 261     if((c = client_getbywin(ev->window)))
 262     {
 263         geometry = titlebar_geometry_remove(c->titlebar, c->border_width, c->geometry);
 264
 265         if(ev->value_mask & XCB_CONFIG_WINDOW_X)
 266             geometry.x = ev->x;
 267         if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
 268             geometry.y = ev->y;
 269         if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
 270             geometry.width = ev->width;
 271         if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
 272             geometry.height = ev->height;
 273
 274         if(ev->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH)
 275         {
 276             luaA_object_push(globalconf.L, c);
 277             client_set_border_width(globalconf.L, -1, ev->border_width);
 278             lua_pop(globalconf.L, 1);
 279         }
 280
 281         /* Clients are not allowed to directly mess with stacking parameters. */
 282         ev->value_mask &= ~(XCB_CONFIG_WINDOW_SIBLING |
 283                                             XCB_CONFIG_WINDOW_STACK_MODE);
 284
 285         /** Configure request are sent with size relative to real (internal)
 286          * window size, i.e. without titlebars and borders. */
 287         geometry = titlebar_geometry_add(c->titlebar, c->border_width, geometry);
 288
 289         if(!client_resize(c, geometry, false))
 290         {
 291             /* Resize wasn't officially needed, but we don't want to break expectations. */
 292             geometry = titlebar_geometry_remove(c->titlebar, c->border_width, c->geometry);
 293             window_configure(c->window, geometry, c->border_width);
 294         }
 295     }
 296     else
 297         event_handle_configurerequest_configure_window(ev);
 298 }
 299
 300 /** The configure notify event handler.
 301  * \param ev The event.
 302  */
 303 static void
 304 event_handle_configurenotify(xcb_configure_notify_event_t *ev)
 305 {
 306     int screen_nbr;
 307     const xcb_screen_t *screen;
 308
 309     for(screen_nbr = 0; screen_nbr < xcb_setup_roots_length(xcb_get_setup(globalconf.connection)); screen_nbr++)
 310         if((screen = xutil_screen_get(globalconf.connection, screen_nbr)) != NULL
 311            && ev->window == screen->root
 312            && (ev->width != screen->width_in_pixels
 313                || ev->height != screen->height_in_pixels))
 314             /* it's not that we panic, but restart */
 315             awesome_restart();
 316 }
 317
 318 /** The destroy notify event handler.
 319  * \param ev The event.
 320  */
 321 static void
 322 event_handle_destroynotify(xcb_destroy_notify_event_t *ev)
 323 {
 324     client_t *c;
 325
 326     if((c = client_getbywin(ev->window)))
 327         client_unmanage(c);
 328     else
 329         for(int i = 0; i < globalconf.embedded.len; i++)
 330             if(globalconf.embedded.tab[i].win == ev->window)
 331             {
 332                 xembed_window_array_take(&globalconf.embedded, i);
 333                 widget_invalidate_bytype(widget_systray);
 334             }
 335 }
 336
 337 /** Handle a motion notify over widgets.
 338  * \param wibox The wibox.
 339  * \param mouse_over The pointer to the registered mouse over widget.
 340  * \param widget The new widget the mouse is over.
 341  */
 342 static void
 343 event_handle_widget_motionnotify(wibox_t *wibox,
 344                                  widget_t *widget)
 345 {
 346     if(widget != wibox->mouse_over)
 347     {
 348         if(wibox->mouse_over)
 349         {
 350             /* Emit mouse leave signal on old widget:
 351              * - Push wibox.*/
 352             luaA_object_push(globalconf.L, wibox);
 353             /* - Push the widget the mouse was on */
 354             luaA_object_push_item(globalconf.L, -1, wibox->mouse_over);
 355             /* - Invert wibox/widget */
 356             lua_insert(globalconf.L, -2);
 357             /* - Emit the signal mouse::leave with the wibox as argument */
 358             luaA_object_emit_signal(globalconf.L, -2, "mouse::leave", 1);
 359             /* - Remove the widget */
 360             lua_pop(globalconf.L, 1);
 361
 362             /* Re-push wibox */
 363             luaA_object_push(globalconf.L, wibox);
 364             luaA_object_unref_item(globalconf.L, -1, wibox->mouse_over);
 365             /* Remove the wibox */
 366             lua_pop(globalconf.L, 1);
 367         }
 368         if(widget)
 369         {
 370             /* Get a ref on this widget so that it can't be unref'd from
 371              * underneath us (-> invalid pointer dereference):
 372              * - Push the wibox */
 373             luaA_object_push(globalconf.L, wibox);
 374             /* - Push the widget */
 375             luaA_object_push_item(globalconf.L, -1, widget);
 376             /* - Reference the widget into the wibox */
 377             luaA_object_ref_item(globalconf.L, -2, -1);
 378
 379             /* Emit mouse::enter signal on new widget:
 380              * - Push the widget */
 381             luaA_object_push_item(globalconf.L, -1, widget);
 382             /* - Move the widget before the wibox we pushed just above */
 383             lua_insert(globalconf.L, -2);
 384             /* - Emit the signal with the wibox as argument */
 385
 386             luaA_object_emit_signal(globalconf.L, -2, "mouse::enter", 1);
 387             /* - Remove the widget from the stack */
 388             lua_pop(globalconf.L, 1);
 389         }
 390
 391         /* Store that this widget was the one with the mouse over */
 392         wibox->mouse_over = widget;
 393
 394     }
 395 }
 396
 397 /** The motion notify event handler.
 398  * \param ev The event.
 399  */
 400 static void
 401 event_handle_motionnotify(xcb_motion_notify_event_t *ev)
 402 {
 403     wibox_t *wibox;
 404
 405     globalconf.timestamp = ev->time;
 406
 407     if(event_handle_mousegrabber(ev->root_x, ev->root_y, ev->state))
 408         return;
 409
 410     if((wibox = wibox_getbywin(ev->event)))
 411     {
 412         widget_t *w = widget_getbycoords(wibox->orientation, &wibox->widgets,
 413                                          wibox->geometry.width,
 414                                          wibox->geometry.height,
 415                                          &ev->event_x, &ev->event_y);
 416
 417         event_handle_widget_motionnotify(wibox, w);
 418     }
 419 }
 420
 421 /** The leave notify event handler.
 422  * \param ev The event.
 423  */
 424 static void
 425 event_handle_leavenotify(xcb_leave_notify_event_t *ev)
 426 {
 427     wibox_t *wibox;
 428     client_t *c;
 429
 430     globalconf.timestamp = ev->time;
 431
 432     if(ev->mode != XCB_NOTIFY_MODE_NORMAL)
 433         return;
 434
 435     if((c = client_getbytitlebarwin(ev->event)) || (c = client_getbywin(ev->event)))
 436     {
 437         if(globalconf.hooks.mouse_leave != LUA_REFNIL)
 438         {
 439             luaA_object_push(globalconf.L, c);
 440             luaA_dofunction_from_registry(globalconf.L, globalconf.hooks.mouse_leave, 1, 0);
 441         }
 442         luaA_object_push(globalconf.L, c);
 443         luaA_object_emit_signal(globalconf.L, -1, "mouse::leave", 0);
 444         lua_pop(globalconf.L, 1);
 445     }
 446
 447     if((wibox = wibox_getbywin(ev->event)))
 448     {
 449         if(wibox->mouse_over)
 450         {
 451             /* Push the wibox */
 452             luaA_object_push(globalconf.L, wibox);
 453             /* Push the widget the mouse is over in this wibox */
 454             luaA_object_push_item(globalconf.L, -1, wibox->mouse_over);
 455             /* Move the widget before the wibox */
 456             lua_insert(globalconf.L, -2);
 457             /* Emit mouse::leave signal on widget the mouse was over with
 458              * its wibox as argument */
 459             luaA_object_emit_signal(globalconf.L, -2, "mouse::leave", 1);
 460             /* Remove the widget from the stack */
 461             lua_pop(globalconf.L, 1);
 462             wibox_clear_mouse_over(wibox);
 463         }
 464
 465         luaA_object_push(globalconf.L, wibox);
 466         luaA_object_emit_signal(globalconf.L, -1, "mouse::leave", 0);
 467         lua_pop(globalconf.L, 1);
 468     }
 469 }
 470
 471 /** The enter notify event handler.
 472  * \param ev The event.
 473  */
 474 static void
 475 event_handle_enternotify(xcb_enter_notify_event_t *ev)
 476 {
 477     client_t *c;
 478     wibox_t *wibox;
 479
 480     globalconf.timestamp = ev->time;
 481
 482     if(ev->mode != XCB_NOTIFY_MODE_NORMAL)
 483         return;
 484
 485     if((wibox = wibox_getbywin(ev->event)))
 486     {
 487         widget_t *w = widget_getbycoords(wibox->orientation, &wibox->widgets,
 488                                          wibox->geometry.width,
 489                                          wibox->geometry.height,
 490                                          &ev->event_x, &ev->event_y);
 491
 492         event_handle_widget_motionnotify(wibox, w);
 493
 494         luaA_object_push(globalconf.L, wibox);
 495         luaA_object_emit_signal(globalconf.L, -1, "mouse::enter", 0);
 496         lua_pop(globalconf.L, 1);
 497     }
 498
 499     if((c = client_getbytitlebarwin(ev->event))
 500        || (c = client_getbywin(ev->event)))
 501     {
 502         if(globalconf.hooks.mouse_enter != LUA_REFNIL)
 503         {
 504             luaA_object_push(globalconf.L, c);
 505             luaA_dofunction_from_registry(globalconf.L, globalconf.hooks.mouse_enter, 1, 0);
 506         }
 507         luaA_object_push(globalconf.L, c);
 508         luaA_object_emit_signal(globalconf.L, -1, "mouse::enter", 0);
 509         lua_pop(globalconf.L, 1);
 510     }
 511 }
 512
 513 /** The focus in event handler.
 514  * \param ev The event.
 515  */
 516 static void
 517 event_handle_focusin(xcb_focus_in_event_t *ev)
 518 {
 519     client_t *c;
 520
 521     /* Events that we are interested in: */
 522     switch(ev->detail)
 523     {
 524         /* These are events that jump between root windows.
 525          */
 526         case XCB_NOTIFY_DETAIL_ANCESTOR:
 527         case XCB_NOTIFY_DETAIL_INFERIOR:
 528
 529         /* These are events that jump between clients.
 530          * Virtual events ensure we always get an event on our top-level window.
 531          */
 532         case XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL:
 533         case XCB_NOTIFY_DETAIL_NONLINEAR:
 534             if((c = client_getbytitlebarwin(ev->event))
 535                || (c = client_getbywin(ev->event)))
 536                 client_focus_update(c);
 537         /* all other events are ignored */
 538         default:
 539             break;
 540     }
 541 }
 542
 543 /** The expose event handler.
 544  * \param ev The event.
 545  */
 546 static void
 547 event_handle_expose(xcb_expose_event_t *ev)
 548 {
 549     wibox_t *wibox;
 550
 551     /* If the wibox got need_update set, skip this because it will be repainted
 552      * soon anyway. Without this we could be painting garbage to the screen!
 553      */
 554     if((wibox = wibox_getbywin(ev->window)) && !wibox->need_update)
 555         wibox_refresh_pixmap_partial(wibox,
 556                                      ev->x, ev->y,
 557                                      ev->width, ev->height);
 558 }
 559
 560 /** The key press event handler.
 561  * \param ev The event.
 562  */
 563 static void
 564 event_handle_key(xcb_key_press_event_t *ev)
 565 {
 566     globalconf.timestamp = ev->time;
 567
 568     if(globalconf.keygrabber != LUA_REFNIL)
 569     {
 570         lua_rawgeti(globalconf.L, LUA_REGISTRYINDEX, globalconf.keygrabber);
 571         if(keygrabber_handlekpress(globalconf.L, ev))
 572         {
 573             if(lua_pcall(globalconf.L, 3, 1, 0))
 574             {
 575                 warn("error running function: %s", lua_tostring(globalconf.L, -1));
 576                 luaA_keygrabber_stop(globalconf.L);
 577             }
 578             else if(!lua_isboolean(globalconf.L, -1) || !lua_toboolean(globalconf.L, -1))
 579                 luaA_keygrabber_stop(globalconf.L);
 580         }
 581         lua_pop(globalconf.L, 1);  /* pop returned value or function if not called */
 582     }
 583     else
 584     {
 585         /* get keysym ignoring all modifiers */
 586         xcb_keysym_t keysym = key_getkeysym(ev->detail, 0);
 587         client_t *c;
 588         if((c = client_getbywin(ev->event)))
 589         {
 590             luaA_object_push(globalconf.L, c);
 591             event_key_callback(ev, &c->keys, -1, 1, &keysym);
 592         }
 593         else
 594             event_key_callback(ev, &globalconf.keys, 0, 0, &keysym);
 595     }
 596 }
 597
 598 /** The map request event handler.
 599  * \param ev The event.
 600  */
 601 static void
 602 event_handle_maprequest(xcb_map_request_event_t *ev)
 603 {
 604     int phys_screen;
 605     client_t *c;
 606     xcb_get_window_attributes_cookie_t wa_c;
 607     xcb_get_window_attributes_reply_t *wa_r;
 608     xcb_get_geometry_cookie_t geom_c;
 609     xcb_get_geometry_reply_t *geom_r;
 610
 611     wa_c = xcb_get_window_attributes_unchecked(globalconf.connection, ev->window);
 612
 613     if(!(wa_r = xcb_get_window_attributes_reply(globalconf.connection, wa_c, NULL)))
 614         return;
 615
 616     if(wa_r->override_redirect)
 617         goto bailout;
 618
 619     if(xembed_getbywin(&globalconf.embedded, ev->window))
 620     {
 621         xcb_map_window(globalconf.connection, ev->window);
 622         xembed_window_activate(globalconf.connection, ev->window);
 623     }
 624     else if((c = client_getbywin(ev->window)))
 625     {
 626         /* Check that it may be visible, but not asked to be hidden */
 627         if(client_maybevisible(c, c->screen) && !c->hidden)
 628         {
 629             luaA_object_push(globalconf.L, c);
 630             client_set_minimized(globalconf.L, -1, false);
 631             lua_pop(globalconf.L, 1);
 632             /* it will be raised, so just update ourself */
 633             client_raise(c);
 634         }
 635     }
 636     else
 637     {
 638         geom_c = xcb_get_geometry_unchecked(globalconf.connection, ev->window);
 639
 640         if(!(geom_r = xcb_get_geometry_reply(globalconf.connection, geom_c, NULL)))
 641         {
 642             goto bailout;
 643         }
 644
 645         phys_screen = xutil_root2screen(globalconf.connection, geom_r->root);
 646
 647         client_manage(ev->window, geom_r, phys_screen, false);
 648
 649         p_delete(&geom_r);
 650     }
 651
 652 bailout:
 653     p_delete(&wa_r);
 654 }
 655
 656 /** The unmap notify event handler.
 657  * \param ev The event.
 658  */
 659 static void
 660 event_handle_unmapnotify(xcb_unmap_notify_event_t *ev)
 661 {
 662     client_t *c;
 663
 664     if((c = client_getbywin(ev->window)))
 665     {
 666         if(ev->event == xutil_screen_get(globalconf.connection, c->phys_screen)->root
 667            && XCB_EVENT_SENT(ev))
 668         {
 669             client_unmanage(c);
 670             xcb_unmap_window(globalconf.connection, ev->window);
 671         }
 672     }
 673     else
 674         for(int i = 0; i < globalconf.embedded.len; i++)
 675             if(globalconf.embedded.tab[i].win == ev->window)
 676             {
 677                 xembed_window_array_take(&globalconf.embedded, i);
 678                 widget_invalidate_bytype(widget_systray);
 679                 xcb_change_save_set(globalconf.connection, XCB_SET_MODE_DELETE, ev->window);
 680             }
 681 }
 682
 683 /** The randr screen change notify event handler.
 684  * \param ev The event.
 685  */
 686 static void
 687 event_handle_randr_screen_change_notify(xcb_randr_screen_change_notify_event_t *ev)
 688 {
 689     /* Code  of  XRRUpdateConfiguration Xlib  function  ported to  XCB
 690      * (only the code relevant  to RRScreenChangeNotify) as the latter
 691      * doesn't provide this kind of function */
 692     if(ev->rotation & (XCB_RANDR_ROTATION_ROTATE_90 | XCB_RANDR_ROTATION_ROTATE_270))
 693         xcb_randr_set_screen_size(globalconf.connection, ev->root, ev->height, ev->width,
 694                                   ev->mheight, ev->mwidth);
 695     else
 696         xcb_randr_set_screen_size(globalconf.connection, ev->root, ev->width, ev->height,
 697                                   ev->mwidth, ev->mheight);
 698
 699     /* XRRUpdateConfiguration also executes the following instruction
 700      * but it's not useful because SubpixelOrder is not used at all at
 701      * the moment
 702      *
 703      * XRenderSetSubpixelOrder(dpy, snum, scevent->subpixel_order);
 704      */
 705
 706     awesome_restart();
 707 }
 708
 709 /** The client message event handler.
 710  * \param ev The event.
 711  */
 712 static void
 713 event_handle_clientmessage(xcb_client_message_event_t *ev)
 714 {
 715     /* check for startup notification messages */
 716     if(sn_xcb_display_process_event(globalconf.sndisplay, (xcb_generic_event_t *) ev))
 717         return;
 718
 719     if(ev->type == WM_CHANGE_STATE)
 720     {
 721         client_t *c;
 722         if((c = client_getbywin(ev->window))
 723            && ev->format == 32
 724            && ev->data.data32[0] == XCB_WM_STATE_ICONIC)
 725         {
 726             luaA_object_push(globalconf.L, c);
 727             client_set_minimized(globalconf.L, -1, true);
 728             lua_pop(globalconf.L, 1);
 729         }
 730     }
 731     else if(ev->type == _XEMBED)
 732         xembed_process_client_message(ev);
 733     else if(ev->type == _NET_SYSTEM_TRAY_OPCODE)
 734         systray_process_client_message(ev);
 735     else
 736         ewmh_process_client_message(ev);
 737 }
 738
 739 /** The keymap change notify event handler.
 740  * \param ev The event.
 741  */
 742 static void
 743 event_handle_mappingnotify(xcb_mapping_notify_event_t *ev)
 744 {
 745     if(ev->request == XCB_MAPPING_MODIFIER
 746        || ev->request == XCB_MAPPING_KEYBOARD)
 747     {
 748         xcb_get_modifier_mapping_cookie_t xmapping_cookie =
 749             xcb_get_modifier_mapping_unchecked(globalconf.connection);
 750
 751         /* Free and then allocate the key symbols */
 752         xcb_key_symbols_free(globalconf.keysyms);
 753         globalconf.keysyms = xcb_key_symbols_alloc(globalconf.connection);
 754
 755         xutil_lock_mask_get(globalconf.connection, xmapping_cookie,
 756                             globalconf.keysyms, &globalconf.numlockmask,
 757                             &globalconf.shiftlockmask, &globalconf.capslockmask,
 758                             &globalconf.modeswitchmask);
 759
 760         int nscreen = xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
 761
 762         /* regrab everything */
 763         for(int phys_screen = 0; phys_screen < nscreen; phys_screen++)
 764         {
 765             xcb_screen_t *s = xutil_screen_get(globalconf.connection, phys_screen);
 766             /* yes XCB_BUTTON_MASK_ANY is also for grab_key even if it's look weird */
 767             xcb_ungrab_key(globalconf.connection, XCB_GRAB_ANY, s->root, XCB_BUTTON_MASK_ANY);
 768             window_grabkeys(s->root, &globalconf.keys);
 769         }
 770
 771         foreach(_c, globalconf.clients)
 772         {
 773             client_t *c = *_c;
 774             xcb_ungrab_key(globalconf.connection, XCB_GRAB_ANY, c->window, XCB_BUTTON_MASK_ANY);
 775             window_grabkeys(c->window, &c->keys);
 776         }
 777     }
 778 }
 779
 780 static void
 781 event_handle_reparentnotify(xcb_reparent_notify_event_t *ev)
 782 {
 783     client_t *c;
 784
 785     if((c = client_getbywin(ev->window)))
 786         client_unmanage(c);
 787 }
 788
 789 /** \brief awesome xerror function.
 790  * There's no way to check accesses to destroyed windows, thus those cases are
 791  * ignored (especially on UnmapNotify's).
 792  * \param e The error event.
 793  */
 794 static void
 795 xerror(xcb_generic_error_t *e)
 796 {
 797     /* ignore this */
 798     if(e->error_code == XCB_EVENT_ERROR_BAD_WINDOW
 799        || (e->error_code == XCB_EVENT_ERROR_BAD_MATCH
 800            && e->major_code == XCB_SET_INPUT_FOCUS)
 801        || (e->error_code == XCB_EVENT_ERROR_BAD_VALUE
 802            && e->major_code == XCB_KILL_CLIENT)
 803        || (e->major_code == XCB_CONFIGURE_WINDOW
 804            && e->error_code == XCB_EVENT_ERROR_BAD_MATCH))
 805         return;
 806
 807     warn("X error: request=%s, error=%s",
 808          xcb_event_get_request_label(e->major_code),
 809          xcb_event_get_error_label(e->error_code));
 810
 811     return;
 812 }
 813
 814 void event_handle(xcb_generic_event_t *event)
 815 {
 816     uint8_t response_type = XCB_EVENT_RESPONSE_TYPE(event);
 817
 818     if(response_type == 0)
 819     {
 820         /* This is an error, not a event */
 821         xerror((xcb_generic_error_t *) event);
 822         return;
 823     }
 824
 825     switch(response_type)
 826     {
 827 #define EVENT(type, callback) case type: callback((void *) event); return
 828         EVENT(XCB_BUTTON_PRESS, event_handle_button);
 829         EVENT(XCB_BUTTON_RELEASE, event_handle_button);
 830         EVENT(XCB_CONFIGURE_REQUEST, event_handle_configurerequest);
 831         EVENT(XCB_CONFIGURE_NOTIFY, event_handle_configurenotify);
 832         EVENT(XCB_DESTROY_NOTIFY, event_handle_destroynotify);
 833         EVENT(XCB_ENTER_NOTIFY, event_handle_enternotify);
 834         EVENT(XCB_CLIENT_MESSAGE, event_handle_clientmessage);
 835         EVENT(XCB_EXPOSE, event_handle_expose);
 836         EVENT(XCB_FOCUS_IN, event_handle_focusin);
 837         EVENT(XCB_KEY_PRESS, event_handle_key);
 838         EVENT(XCB_KEY_RELEASE, event_handle_key);
 839         EVENT(XCB_LEAVE_NOTIFY, event_handle_leavenotify);
 840         EVENT(XCB_MAPPING_NOTIFY, event_handle_mappingnotify);
 841         EVENT(XCB_MAP_REQUEST, event_handle_maprequest);
 842         EVENT(XCB_MOTION_NOTIFY, event_handle_motionnotify);
 843         EVENT(XCB_PROPERTY_NOTIFY, property_handle_propertynotify);
 844         EVENT(XCB_REPARENT_NOTIFY, event_handle_reparentnotify);
 845         EVENT(XCB_UNMAP_NOTIFY, event_handle_unmapnotify);
 846 #undef EVENT
 847     }
 848
 849     static uint8_t randr_screen_change_notify = 0;
 850
 851     if(randr_screen_change_notify == 0)
 852     {
 853         /* check for randr extension */
 854         const xcb_query_extension_reply_t *randr_query;
 855         randr_query = xcb_get_extension_data(globalconf.connection, &xcb_randr_id);
 856         if(randr_query->present)
 857             randr_screen_change_notify = randr_query->first_event + XCB_RANDR_SCREEN_CHANGE_NOTIFY;
 858     }
 859
 860     if (response_type == randr_screen_change_notify)
 861         event_handle_randr_screen_change_notify((void *) event);
 862 }
 863
 864 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80