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_keysyms.h>
  23 #include <xcb/xcb_atom.h>
  24 #include <xcb/xcb_aux.h>
  25
  26 #include "screen.h"
  27 #include "event.h"
  28 #include "tag.h"
  29 #include "statusbar.h"
  30 #include "window.h"
  31 #include "mouse.h"
  32 #include "ewmh.h"
  33 #include "client.h"
  34 #include "widget.h"
  35 #include "titlebar.h"
  36 #include "keygrabber.h"
  37 #include "lua.h"
  38 #include "systray.h"
  39 #include "layouts/floating.h"
  40 #include "common/xscreen.h"
  41 #include "common/xutil.h"
  42
  43 extern awesome_t globalconf;
  44
  45 /** Handle mouse button press.
  46  * \param c The client on which the event happened or NULL.
  47  * \param button Button number
  48  * \param state Modkeys state
  49  * \param buttons Buttons list to check for
  50  */
  51 static void
  52 event_handle_mouse_button_press(client_t *c,
  53                                 unsigned int button,
  54                                 unsigned int state,
  55                                 button_t *buttons)
  56 {
  57     button_t *b;
  58
  59     for(b = buttons; b; b = b->next)
  60         if(button == b->button && CLEANMASK(state) == b->mod && b->fct)
  61         {
  62             if(c)
  63             {
  64                 luaA_client_userdata_new(globalconf.L, c);
  65                 luaA_dofunction(globalconf.L, b->fct, 1);
  66             }
  67             else
  68                 luaA_dofunction(globalconf.L, b->fct, 0);
  69         }
  70 }
  71
  72 /** The button press event handler.
  73  * \param data currently unused.
  74  * \param connection The connection to the X server.
  75  * \param ev The event.
  76  */
  77 int
  78 event_handle_buttonpress(void *data __attribute__ ((unused)),
  79                          xcb_connection_t *connection, xcb_button_press_event_t *ev)
  80 {
  81     int screen, tmp;
  82     const int nb_screen = xcb_setup_roots_length(xcb_get_setup(connection));
  83     client_t *c;
  84     widget_node_t *w;
  85     statusbar_t *statusbar;
  86
  87     for(screen = 0; screen < globalconf.screens_info->nscreen; screen++)
  88         for(statusbar = globalconf.screens[screen].statusbar; statusbar; statusbar = statusbar->next)
  89             if(statusbar->sw
  90                && (statusbar->sw->window == ev->event || statusbar->sw->window == ev->child))
  91             {
  92                 /* If the statusbar is child, then x,y are
  93                  * relative to root window */
  94                 if(statusbar->sw->window == ev->child)
  95                 {
  96                     ev->event_x -= statusbar->sw->geometry.x;
  97                     ev->event_y -= statusbar->sw->geometry.y;
  98                 }
  99                 /* Need to transform coordinates like it was
 100                  * top/bottom */
 101                 switch(statusbar->position)
 102                 {
 103                   case Right:
 104                     tmp = ev->event_y;
 105                     ev->event_y = statusbar->height - ev->event_x;
 106                     ev->event_x = tmp;
 107                     break;
 108                   case Left:
 109                     tmp = ev->event_y;
 110                     ev->event_y = ev->event_x;
 111                     ev->event_x = statusbar->width - tmp;
 112                     break;
 113                   default:
 114                     break;
 115                 }
 116                 for(w = statusbar->widgets; w; w = w->next)
 117                     if(ev->event_x >= w->area.x && ev->event_x < w->area.x + w->area.width
 118                        && ev->event_y >= w->area.y && ev->event_y < w->area.y + w->area.height)
 119                     {
 120                         w->widget->button_press(w, ev, statusbar->screen,
 121                                                 statusbar, AWESOME_TYPE_STATUSBAR);
 122                         return 0;
 123                     }
 124                 /* return if no widget match */
 125                 return 0;
 126             }
 127
 128     if((c = client_getbytitlebarwin(ev->event)))
 129     {
 130         /* Need to transform coordinates like it was
 131          * top/bottom */
 132         switch(c->titlebar->position)
 133         {
 134           case Right:
 135             tmp = ev->event_y;
 136             ev->event_y = c->titlebar->height - ev->event_x;
 137             ev->event_x = tmp;
 138             break;
 139           case Left:
 140             tmp = ev->event_y;
 141             ev->event_y = ev->event_x;
 142             ev->event_x = c->titlebar->width - tmp;
 143             break;
 144           default:
 145             break;
 146         }
 147         for(w = c->titlebar->widgets; w; w = w->next)
 148             if(ev->event_x >= w->area.x && ev->event_x < w->area.x + w->area.width
 149                && ev->event_y >= w->area.y && ev->event_y < w->area.y + w->area.height)
 150             {
 151                 w->widget->button_press(w, ev, c->screen,
 152                                         c->titlebar, AWESOME_TYPE_TITLEBAR);
 153                 return 0;
 154             }
 155         /* return if no widget match */
 156         return 0;
 157     }
 158
 159     if((c = client_getbywin(ev->event)))
 160     {
 161         event_handle_mouse_button_press(c, ev->detail, ev->state, c->buttons);
 162         xcb_allow_events(globalconf.connection, XCB_ALLOW_REPLAY_POINTER, XCB_CURRENT_TIME);
 163     }
 164     else
 165         for(screen = 0; screen < nb_screen; screen++)
 166             if(xutil_screen_get(connection, screen)->root == ev->event)
 167             {
 168                 event_handle_mouse_button_press(NULL, ev->detail, ev->state,
 169                                                 globalconf.buttons.root);
 170                 return 0;
 171             }
 172
 173     return 0;
 174 }
 175
 176 /** The configure event handler.
 177  * \param data currently unused.
 178  * \param connection The connection to the X server.
 179  * \param ev The event.
 180  */
 181 int
 182 event_handle_configurerequest(void *data __attribute__ ((unused)),
 183                               xcb_connection_t *connection, xcb_configure_request_event_t *ev)
 184 {
 185     client_t *c;
 186     area_t geometry;
 187
 188     if((c = client_getbywin(ev->window)))
 189     {
 190         geometry = c->geometry;
 191
 192         if(ev->value_mask & XCB_CONFIG_WINDOW_X)
 193             geometry.x = ev->x;
 194         if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
 195             geometry.y = ev->y;
 196         if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
 197             geometry.width = ev->width;
 198         if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
 199             geometry.height = ev->height;
 200
 201         if(geometry.x != c->geometry.x || geometry.y != c->geometry.y
 202            || geometry.width != c->geometry.width || geometry.height != c->geometry.height)
 203         {
 204             if(c->isfloating || layout_get_current(c->screen) == layout_floating)
 205                 client_resize(c, geometry, false);
 206             else
 207             {
 208                 globalconf.screens[c->screen].need_arrange = true;
 209                 /* If we do not resize the client, at least tell it that it
 210                  * has its new configuration. That fixes at least
 211                  * gnome-terminal */
 212                 window_configure(c->win, c->geometry, c->border);
 213             }
 214         }
 215         else
 216         {
 217             titlebar_update_geometry_floating(c);
 218             window_configure(c->win, geometry, c->border);
 219         }
 220     }
 221     else
 222     {
 223         uint16_t config_win_mask = 0;
 224         uint32_t config_win_vals[7];
 225         unsigned short i = 0;
 226
 227         if(ev->value_mask & XCB_CONFIG_WINDOW_X)
 228         {
 229             config_win_mask |= XCB_CONFIG_WINDOW_X;
 230             config_win_vals[i++] = ev->x;
 231         }
 232         if(ev->value_mask & XCB_CONFIG_WINDOW_Y)
 233         {
 234             config_win_mask |= XCB_CONFIG_WINDOW_Y;
 235             config_win_vals[i++] = ev->y;
 236         }
 237         if(ev->value_mask & XCB_CONFIG_WINDOW_WIDTH)
 238         {
 239             config_win_mask |= XCB_CONFIG_WINDOW_WIDTH;
 240             config_win_vals[i++] = ev->width;
 241         }
 242         if(ev->value_mask & XCB_CONFIG_WINDOW_HEIGHT)
 243         {
 244             config_win_mask |= XCB_CONFIG_WINDOW_HEIGHT;
 245             config_win_vals[i++] = ev->height;
 246         }
 247         if(ev->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH)
 248         {
 249             config_win_mask |= XCB_CONFIG_WINDOW_BORDER_WIDTH;
 250             config_win_vals[i++] = ev->border_width;
 251         }
 252         if(ev->value_mask & XCB_CONFIG_WINDOW_SIBLING)
 253         {
 254             config_win_mask |= XCB_CONFIG_WINDOW_SIBLING;
 255             config_win_vals[i++] = ev->sibling;
 256         }
 257         if(ev->value_mask & XCB_CONFIG_WINDOW_STACK_MODE)
 258         {
 259             config_win_mask |= XCB_CONFIG_WINDOW_STACK_MODE;
 260             config_win_vals[i++] = ev->stack_mode;
 261         }
 262
 263         xcb_configure_window(connection, ev->window, config_win_mask, config_win_vals);
 264     }
 265
 266     return 0;
 267 }
 268
 269 /** The configure notify event handler.
 270  * \param data currently unused.
 271  * \param connection The connection to the X server.
 272  * \param ev The event.
 273  */
 274 int
 275 event_handle_configurenotify(void *data __attribute__ ((unused)),
 276                              xcb_connection_t *connection, xcb_configure_notify_event_t *ev)
 277 {
 278     int screen_nbr;
 279     const xcb_screen_t *screen;
 280
 281     for(screen_nbr = 0; screen_nbr < xcb_setup_roots_length(xcb_get_setup (connection)); screen_nbr++)
 282         if((screen = xutil_screen_get(connection, screen_nbr)) != NULL
 283            && ev->window == screen->root
 284            && (ev->width != screen->width_in_pixels
 285                || ev->height != screen->height_in_pixels))
 286             /* it's not that we panic, but restart */
 287             a_exec(globalconf.argv);
 288
 289     return 0;
 290 }
 291
 292 /** The destroy notify event handler.
 293  * \param data currently unused.
 294  * \param connection The connection to the X server.
 295  * \param ev The event.
 296  */
 297 int
 298 event_handle_destroynotify(void *data __attribute__ ((unused)),
 299                            xcb_connection_t *connection __attribute__ ((unused)),
 300                            xcb_destroy_notify_event_t *ev)
 301 {
 302     client_t *c;
 303
 304     if((c = client_getbywin(ev->window)))
 305         client_unmanage(c);
 306
 307     return 0;
 308 }
 309
 310 /** The enter notify event handler.
 311  * \param data currently unused.
 312  * \param connection The connection to the X server.
 313  * \param ev The event.
 314  */
 315 int
 316 event_handle_enternotify(void *data __attribute__ ((unused)),
 317                          xcb_connection_t *connection,
 318                          xcb_enter_notify_event_t *ev)
 319 {
 320     client_t *c;
 321     xembed_window_t *emwin;
 322
 323     if(ev->mode != XCB_NOTIFY_MODE_NORMAL
 324        || (ev->root_x == globalconf.pointer_x
 325            && ev->root_y == globalconf.pointer_y))
 326         return 0;
 327
 328     if((c = client_getbytitlebarwin(ev->event))
 329        || (c = client_getbywin(ev->event)))
 330     {
 331         window_grabbuttons(c->win, c->phys_screen, c->buttons);
 332         /* The idea behind saving pointer_x and pointer_y is Bob Marley powered.
 333          * this will allow us top drop some EnterNotify events and thus not giving
 334          * focus to windows appering under the cursor without a cursor move */
 335         globalconf.pointer_x = ev->root_x;
 336         globalconf.pointer_y = ev->root_y;
 337
 338         luaA_client_userdata_new(globalconf.L, c);
 339         luaA_dofunction(globalconf.L, globalconf.hooks.mouseover, 1);
 340     }
 341     else if((emwin = xembed_getbywin(globalconf.embedded, ev->event)))
 342         xcb_ungrab_button(globalconf.connection, XCB_BUTTON_INDEX_ANY,
 343                           xutil_screen_get(connection, emwin->phys_screen)->root,
 344                           ANY_MODIFIER);
 345     else
 346         window_root_grabbuttons(ev->root);
 347
 348     return 0;
 349 }
 350
 351 /** The expose event handler.
 352  * \param data currently unused.
 353  * \param connection The connection to the X server.
 354  * \param ev The event.
 355  */
 356 int
 357 event_handle_expose(void *data __attribute__ ((unused)),
 358                     xcb_connection_t *connection __attribute__ ((unused)),
 359                     xcb_expose_event_t *ev)
 360 {
 361     int screen;
 362     statusbar_t *statusbar;
 363     client_t *c;
 364
 365     if(!ev->count)
 366     {
 367         for(screen = 0; screen < globalconf.screens_info->nscreen; screen++)
 368             for(statusbar = globalconf.screens[screen].statusbar; statusbar; statusbar = statusbar->next)
 369                 if(statusbar->sw
 370                    && statusbar->sw->window == ev->window)
 371                 {
 372                     simplewindow_refresh_pixmap(statusbar->sw);
 373                     return 0;
 374                 }
 375
 376         if((c = client_getbytitlebarwin(ev->window)))
 377            simplewindow_refresh_pixmap(c->titlebar->sw);
 378     }
 379
 380     return 0;
 381 }
 382
 383 /** The key press event handler.
 384  * \param data currently unused.
 385  * \param connection The connection to the X server.
 386  * \param ev The event.
 387  */
 388 int
 389 event_handle_keypress(void *data __attribute__ ((unused)),
 390                       xcb_connection_t *connection __attribute__ ((unused)),
 391                       xcb_key_press_event_t *ev)
 392 {
 393     xcb_keysym_t keysym;
 394     keybinding_t *k;
 395
 396     if(globalconf.keygrabber != LUA_REFNIL)
 397     {
 398         lua_rawgeti(globalconf.L, LUA_REGISTRYINDEX, globalconf.keygrabber);
 399         if(keygrabber_handlekpress(globalconf.L, ev))
 400         {
 401             if(lua_pcall(globalconf.L, 2, 1, 0))
 402             {
 403                 warn("error running function: %s", lua_tostring(globalconf.L, -1));
 404                 keygrabber_ungrab();
 405             }
 406             else if(!lua_isboolean(globalconf.L, -1) || !lua_toboolean(globalconf.L, -1))
 407                 keygrabber_ungrab();
 408         }
 409         lua_pop(globalconf.L, 1);  /* pop returned value or function if not called */
 410     }
 411     else
 412     {
 413         keysym = xcb_key_symbols_get_keysym(globalconf.keysyms, ev->detail, 0);
 414
 415         for(k = globalconf.keys; k; k = k->next)
 416             if(((k->keycode && ev->detail == k->keycode) || (k->keysym && keysym == k->keysym))
 417                && k->fct && CLEANMASK(k->mod) == CLEANMASK(ev->state))
 418                 luaA_dofunction(globalconf.L, k->fct, 0);
 419     }
 420
 421     return 0;
 422 }
 423
 424 /** The map request event handler.
 425  * \param data currently unused.
 426  * \param connection The connection to the X server.
 427  * \param ev The event.
 428  */
 429 int
 430 event_handle_maprequest(void *data __attribute__ ((unused)),
 431                         xcb_connection_t *connection, xcb_map_request_event_t *ev)
 432 {
 433     int screen_nbr = 0;
 434     client_t *c;
 435     xcb_get_window_attributes_cookie_t wa_c;
 436     xcb_get_window_attributes_reply_t *wa_r;
 437     xcb_query_pointer_cookie_t qp_c = { 0 };
 438     xcb_query_pointer_reply_t *qp_r = NULL;
 439     xcb_get_geometry_cookie_t geom_c;
 440     xcb_get_geometry_reply_t *geom_r;
 441     xcb_screen_iterator_t iter;
 442
 443     wa_c = xcb_get_window_attributes_unchecked(connection, ev->window);
 444
 445     if(!(wa_r = xcb_get_window_attributes_reply(connection, wa_c, NULL)))
 446         return -1;
 447
 448     if(wa_r->override_redirect)
 449         goto bailout;
 450
 451     if(xembed_getbywin(globalconf.embedded, ev->window))
 452     {
 453         xcb_map_window(connection, ev->window);
 454         xembed_window_activate(connection, ev->window);
 455     }
 456     else if(!(c = client_getbywin(ev->window)))
 457     {
 458         geom_c = xcb_get_geometry_unchecked(connection, ev->window);
 459
 460         if(globalconf.screens_info->xinerama_is_active)
 461             qp_c = xcb_query_pointer_unchecked(connection, xutil_screen_get(globalconf.connection,
 462                                                                             screen_nbr)->root);
 463
 464         if(!(geom_r = xcb_get_geometry_reply(connection, geom_c, NULL)))
 465         {
 466             if(globalconf.screens_info->xinerama_is_active)
 467             {
 468                 qp_r = xcb_query_pointer_reply(connection, qp_c, NULL);
 469                 p_delete(&qp_r);
 470             }
 471             return -1;
 472         }
 473
 474         if(globalconf.screens_info->xinerama_is_active
 475            && (qp_r = xcb_query_pointer_reply(connection, qp_c, NULL)))
 476         {
 477             screen_nbr = screen_get_bycoord(globalconf.screens_info, screen_nbr,
 478                                             qp_r->root_x, qp_r->root_y);
 479             p_delete(&qp_r);
 480         }
 481         else
 482             for(iter = xcb_setup_roots_iterator(xcb_get_setup(connection)), screen_nbr = 0;
 483                 iter.rem && iter.data->root != geom_r->root; xcb_screen_next (&iter), ++screen_nbr);
 484
 485         client_manage(ev->window, geom_r, screen_nbr);
 486         p_delete(&geom_r);
 487     }
 488
 489 bailout:
 490     p_delete(&wa_r);
 491     return 0;
 492 }
 493
 494 /** The property notify event handler.
 495  * \param data currently unused.
 496  * \param connection The connection to the X server.
 497  * \param ev The event.
 498  */
 499 int
 500 event_handle_propertynotify(void *data __attribute__ ((unused)),
 501                             xcb_connection_t *connection, xcb_property_notify_event_t *ev)
 502 {
 503     client_t *c;
 504     xcb_window_t trans;
 505     xembed_window_t *emwin;
 506
 507     if(ev->state == XCB_PROPERTY_DELETE)
 508         return 0; /* ignore */
 509     if((emwin = xembed_getbywin(globalconf.embedded, ev->window)))
 510         xembed_property_update(connection, emwin);
 511     else if((c = client_getbywin(ev->window)))
 512     {
 513         if(ev->atom == WM_TRANSIENT_FOR)
 514         {
 515             xutil_get_transient_for_hint(connection, c->win, &trans);
 516             if(!c->isfloating
 517                && (c->isfloating = (client_getbywin(trans) != NULL)))
 518                 globalconf.screens[c->screen].need_arrange = true;
 519         }
 520         else if (ev->atom == WM_NORMAL_HINTS)
 521             client_updatesizehints(c);
 522         else if (ev->atom == WM_HINTS)
 523             client_updatewmhints(c);
 524
 525         if(ev->atom == WM_NAME
 526            || ev->atom == xutil_intern_atom_reply(globalconf.connection, &globalconf.atoms,
 527                                                   xutil_intern_atom(globalconf.connection,
 528                                                                     &globalconf.atoms,
 529                                                                     "_NET_WM_NAME")))
 530             client_updatetitle(c);
 531     }
 532
 533     return 0;
 534 }
 535
 536 /** The unmap notify event handler.
 537  * \param data currently unused.
 538  * \param connection The connection to the X server.
 539  * \param ev The event.
 540  */
 541 int
 542 event_handle_unmapnotify(void *data __attribute__ ((unused)),
 543                          xcb_connection_t *connection, xcb_unmap_notify_event_t *ev)
 544 {
 545     client_t *c;
 546     xembed_window_t *em;
 547     int i;
 548
 549     /* event->send_event (Xlib)  is quivalent to  (ev->response_type &
 550      * 0x80)  in XCB  because the  SendEvent bit  is available  in the
 551      * response_type field */
 552     bool send_event = ((ev->response_type & 0x80) >> 7);
 553
 554     if((c = client_getbywin(ev->window))
 555        && ev->event == xutil_screen_get(connection, c->phys_screen)->root
 556        && send_event && window_getstate(c->win) == XCB_WM_NORMAL_STATE)
 557         client_unmanage(c);
 558
 559     /** \todo invalidate for all screen might be too much */
 560     if((em = xembed_getbywin(globalconf.embedded, ev->window)))
 561     {
 562         xembed_window_list_detach(&globalconf.embedded, em);
 563         for(i = 0; i < globalconf.screens_info->nscreen; i++)
 564             widget_invalidate_cache(i, WIDGET_CACHE_EMBEDDED);
 565     }
 566
 567     return 0;
 568 }
 569
 570 /** The randr screen change notify event handler.
 571  * \param data currently unused.
 572  * \param connection The connection to the X server.
 573  * \param ev The event.
 574  */
 575 int
 576 event_handle_randr_screen_change_notify(void *data __attribute__ ((unused)),
 577                                         xcb_connection_t *connection __attribute__ ((unused)),
 578                                         xcb_randr_screen_change_notify_event_t *ev)
 579 {
 580     if(!globalconf.have_randr)
 581         return -1;
 582
 583     /* Code  of  XRRUpdateConfiguration Xlib  function  ported to  XCB
 584      * (only the code relevant  to RRScreenChangeNotify) as the latter
 585      * doesn't provide this kind of function */
 586     if(ev->rotation & (XCB_RANDR_ROTATION_ROTATE_90 | XCB_RANDR_ROTATION_ROTATE_270))
 587         xcb_randr_set_screen_size(connection, ev->root, ev->height, ev->width,
 588                                   ev->mheight, ev->mwidth);
 589     else
 590         xcb_randr_set_screen_size(connection, ev->root, ev->width, ev->height,
 591                                   ev->mwidth, ev->mheight);
 592
 593     /* XRRUpdateConfiguration also executes the following instruction
 594      * but it's not useful because SubpixelOrder is not used at all at
 595      * the moment
 596      *
 597      * XRenderSetSubpixelOrder(dpy, snum, scevent->subpixel_order);
 598      */
 599
 600     a_exec(globalconf.argv);
 601     return 0;
 602 }
 603
 604 /** The client message event handler.
 605  * \param data currently unused.
 606  * \param connection The connection to the X server.
 607  * \param ev The event.
 608  */
 609 int
 610 event_handle_clientmessage(void *data __attribute__ ((unused)),
 611                            xcb_connection_t *connection,
 612                            xcb_client_message_event_t *ev)
 613 {
 614     xutil_intern_atom_request_t atom_xem_q, atom_systray_q;
 615     xcb_atom_t atom_xem, atom_systray;
 616
 617     atom_xem_q = xutil_intern_atom(connection, &globalconf.atoms, "_XEMBED");
 618     atom_systray_q = xutil_intern_atom(connection, &globalconf.atoms, "_NET_SYSTEM_TRAY_OPCODE");
 619
 620     atom_xem = xutil_intern_atom_reply(globalconf.connection, &globalconf.atoms, atom_xem_q);
 621     atom_systray = xutil_intern_atom_reply(globalconf.connection, &globalconf.atoms, atom_systray_q);
 622
 623     if(ev->type == atom_xem)
 624         return xembed_process_client_message(ev);
 625     else if(ev->type == atom_systray)
 626         return systray_process_client_message(ev);
 627     return ewmh_process_client_message(ev);
 628 }
 629
 630 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80