src/events.c

   1 /* Copyright (c) 2012, Bastien Dejean
   2  * All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are met:
   6  *
   7  * 1. Redistributions of source code must retain the above copyright notice, this
   8  *    list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright notice,
  10  *    this list of conditions and the following disclaimer in the documentation
  11  *    and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  16  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  17  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  20  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  22  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  */
  24
  25 #include <stdbool.h>
  26 #include "bspwm.h"
  27 #include "ewmh.h"
  28 #include "monitor.h"
  29 #include "query.h"
  30 #include "settings.h"
  31 #include "subscribe.h"
  32 #include "tree.h"
  33 #include "window.h"
  34 #include "pointer.h"
  35 #include "events.h"
  36
  37 void handle_event(xcb_generic_event_t *evt)
  38 {
  39         uint8_t resp_type = XCB_EVENT_RESPONSE_TYPE(evt);
  40         switch (resp_type) {
  41                 case XCB_MAP_REQUEST:
  42                         map_request(evt);
  43                         break;
  44                 case XCB_DESTROY_NOTIFY:
  45                         destroy_notify(evt);
  46                         break;
  47                 case XCB_UNMAP_NOTIFY:
  48                         unmap_notify(evt);
  49                         break;
  50                 case XCB_CLIENT_MESSAGE:
  51                         client_message(evt);
  52                         break;
  53                 case XCB_CONFIGURE_REQUEST:
  54                         configure_request(evt);
  55                         break;
  56                 case XCB_CONFIGURE_NOTIFY:
  57                         configure_notify(evt);
  58                         break;
  59                 case XCB_PROPERTY_NOTIFY:
  60                         property_notify(evt);
  61                         break;
  62                 case XCB_ENTER_NOTIFY:
  63                         enter_notify(evt);
  64                         break;
  65                 case XCB_MOTION_NOTIFY:
  66                         motion_notify(evt);
  67                         break;
  68                 case XCB_BUTTON_PRESS:
  69                         button_press(evt);
  70                         break;
  71                 case XCB_FOCUS_IN:
  72                         focus_in(evt);
  73                         break;
  74                 case 0:
  75                         process_error(evt);
  76                         break;
  77                 default:
  78                         if (randr && resp_type == randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY) {
  79                                 update_monitors();
  80                         }
  81                         break;
  82         }
  83 }
  84
  85 void map_request(xcb_generic_event_t *evt)
  86 {
  87         xcb_map_request_event_t *e = (xcb_map_request_event_t *) evt;
  88
  89         schedule_window(e->window);
  90 }
  91
  92 void configure_request(xcb_generic_event_t *evt)
  93 {
  94         xcb_configure_request_event_t *e = (xcb_configure_request_event_t *) evt;
  95
  96         coordinates_t loc;
  97         bool is_managed = locate_window(e->window, &loc);
  98         client_t *c = (is_managed ? loc.node->client : NULL);
  99         uint16_t width, height;
 100
 101         if (!is_managed) {
 102                 uint16_t mask = 0;
 103                 uint32_t values[7];
 104                 unsigned short i = 0;
 105
 106                 if (e->value_mask & XCB_CONFIG_WINDOW_X) {
 107                         mask |= XCB_CONFIG_WINDOW_X;
 108                         values[i++] = e->x;
 109                 }
 110
 111                 if (e->value_mask & XCB_CONFIG_WINDOW_Y) {
 112                         mask |= XCB_CONFIG_WINDOW_Y;
 113                         values[i++] = e->y;
 114                 }
 115
 116                 if (e->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
 117                         mask |= XCB_CONFIG_WINDOW_WIDTH;
 118                         values[i++] = e->width;
 119                 }
 120
 121                 if (e->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
 122                         mask |= XCB_CONFIG_WINDOW_HEIGHT;
 123                         values[i++] = e->height;
 124                 }
 125
 126                 if (e->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH) {
 127                         mask |= XCB_CONFIG_WINDOW_BORDER_WIDTH;
 128                         values[i++] = e->border_width;
 129                 }
 130
 131                 if (e->value_mask & XCB_CONFIG_WINDOW_SIBLING) {
 132                         mask |= XCB_CONFIG_WINDOW_SIBLING;
 133                         values[i++] = e->sibling;
 134                 }
 135
 136                 if (e->value_mask & XCB_CONFIG_WINDOW_STACK_MODE) {
 137                         mask |= XCB_CONFIG_WINDOW_STACK_MODE;
 138                         values[i++] = e->stack_mode;
 139                 }
 140
 141                 xcb_configure_window(dpy, e->window, mask, values);
 142
 143         } else if (IS_FLOATING(c)) {
 144                 width = c->floating_rectangle.width;
 145                 height = c->floating_rectangle.height;
 146
 147                 if (e->value_mask & XCB_CONFIG_WINDOW_X) {
 148                         c->floating_rectangle.x = e->x;
 149                 }
 150
 151                 if (e->value_mask & XCB_CONFIG_WINDOW_Y) {
 152                         c->floating_rectangle.y = e->y;
 153                 }
 154
 155                 if (e->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
 156                         width = e->width;
 157                 }
 158
 159                 if (e->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
 160                         height = e->height;
 161                 }
 162
 163                 apply_size_hints(c, &width, &height);
 164                 c->floating_rectangle.width = width;
 165                 c->floating_rectangle.height = height;
 166                 xcb_rectangle_t r = c->floating_rectangle;
 167
 168                 window_move_resize(e->window, r.x, r.y, r.width, r.height);
 169
 170                 put_status(SBSC_MASK_NODE_GEOMETRY, "node_geometry 0x%08X 0x%08X 0x%08X %ux%u+%i+%i\n", loc.monitor->id, loc.desktop->id, e->window, r.width, r.height, r.x, r.y);
 171
 172                 monitor_t *m = monitor_from_client(c);
 173                 if (m != loc.monitor) {
 174                         transfer_node(loc.monitor, loc.desktop, loc.node, m, m->desk, m->desk->focus);
 175                 }
 176         } else {
 177                 if (c->state == STATE_PSEUDO_TILED) {
 178                         width = c->floating_rectangle.width;
 179                         height = c->floating_rectangle.height;
 180                         if (e->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
 181                                 width = e->width;
 182                         }
 183                         if (e->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
 184                                 height = e->height;
 185                         }
 186                         apply_size_hints(c, &width, &height);
 187                         if (width != c->floating_rectangle.width || height != c->floating_rectangle.height) {
 188                                 c->floating_rectangle.width = width;
 189                                 c->floating_rectangle.height = height;
 190                                 arrange(loc.monitor, loc.desktop);
 191                         }
 192                 }
 193
 194
 195                 xcb_configure_notify_event_t evt;
 196                 unsigned int bw = c->border_width;
 197
 198                 xcb_rectangle_t r = IS_FULLSCREEN(c) ? loc.monitor->rectangle : c->tiled_rectangle;
 199
 200                 evt.response_type = XCB_CONFIGURE_NOTIFY;
 201                 evt.event = e->window;
 202                 evt.window = e->window;
 203                 evt.above_sibling = XCB_NONE;
 204                 evt.x = r.x;
 205                 evt.y = r.y;
 206                 evt.width = r.width;
 207                 evt.height = r.height;
 208                 evt.border_width = bw;
 209                 evt.override_redirect = false;
 210
 211                 xcb_send_event(dpy, false, e->window, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (const char *) &evt);
 212         }
 213 }
 214
 215 void configure_notify(xcb_generic_event_t *evt)
 216 {
 217         xcb_configure_notify_event_t *e = (xcb_configure_notify_event_t *) evt;
 218
 219         if (e->window == root) {
 220                 screen_width = e->width;
 221                 screen_height = e->height;
 222         }
 223 }
 224
 225 void destroy_notify(xcb_generic_event_t *evt)
 226 {
 227         xcb_destroy_notify_event_t *e = (xcb_destroy_notify_event_t *) evt;
 228
 229         unmanage_window(e->window);
 230 }
 231
 232 void unmap_notify(xcb_generic_event_t *evt)
 233 {
 234         xcb_unmap_notify_event_t *e = (xcb_unmap_notify_event_t *) evt;
 235
 236         if (e->window == motion_recorder.id) {
 237                 /* Unmapping the motion recorder in `query_pointer` will produce
 238                  * unwanted enter notify events. We can filter those events because
 239                  * their sequence number is the same as the sequence number of the
 240                  * related unmap notify event. This is a technique used by i3-wm to
 241                  * filter enter notify events. */
 242                 motion_recorder.sequence = e->sequence;
 243         }
 244
 245         unmanage_window(e->window);
 246 }
 247
 248 void property_notify(xcb_generic_event_t *evt)
 249 {
 250         xcb_property_notify_event_t *e = (xcb_property_notify_event_t *) evt;
 251
 252         if (e->atom == ewmh->_NET_WM_STRUT_PARTIAL && ewmh_handle_struts(e->window)) {
 253                 for (monitor_t *m = mon_head; m != NULL; m = m->next) {
 254                         for (desktop_t *d = m->desk_head; d != NULL; d = d->next) {
 255                                 arrange(m, d);
 256                         }
 257                 }
 258         }
 259
 260         if (e->atom != XCB_ATOM_WM_HINTS && e->atom != XCB_ATOM_WM_NORMAL_HINTS) {
 261                 return;
 262         }
 263
 264         coordinates_t loc;
 265         if (!locate_window(e->window, &loc)) {
 266                         return;
 267         }
 268
 269         if (e->atom == XCB_ATOM_WM_HINTS) {
 270                 xcb_icccm_wm_hints_t hints;
 271                 if (xcb_icccm_get_wm_hints_reply(dpy, xcb_icccm_get_wm_hints(dpy, e->window), &hints, NULL) == 1 &&
 272                     (hints.flags & XCB_ICCCM_WM_HINT_X_URGENCY))
 273                         set_urgent(loc.monitor, loc.desktop, loc.node, xcb_icccm_wm_hints_get_urgency(&hints));
 274         } else if (e->atom == XCB_ATOM_WM_NORMAL_HINTS) {
 275                 client_t *c = loc.node->client;
 276                 if (xcb_icccm_get_wm_normal_hints_reply(dpy, xcb_icccm_get_wm_normal_hints(dpy, e->window), &c->size_hints, NULL) == 1) {
 277                         arrange(loc.monitor, loc.desktop);
 278                 }
 279         }
 280 }
 281
 282 void client_message(xcb_generic_event_t *evt)
 283 {
 284         xcb_client_message_event_t *e = (xcb_client_message_event_t *) evt;
 285
 286         if (e->type == ewmh->_NET_CURRENT_DESKTOP) {
 287                 coordinates_t loc;
 288                 if (ewmh_locate_desktop(e->data.data32[0], &loc)) {
 289                         focus_node(loc.monitor, loc.desktop, loc.desktop->focus);
 290                 }
 291                 return;
 292         }
 293
 294         coordinates_t loc;
 295         if (!locate_window(e->window, &loc)) {
 296                 return;
 297         }
 298
 299         if (e->type == ewmh->_NET_WM_STATE) {
 300                 handle_state(loc.monitor, loc.desktop, loc.node, e->data.data32[1], e->data.data32[0]);
 301                 handle_state(loc.monitor, loc.desktop, loc.node, e->data.data32[2], e->data.data32[0]);
 302         } else if (e->type == ewmh->_NET_ACTIVE_WINDOW) {
 303                 if ((ignore_ewmh_focus && e->data.data32[0] == XCB_EWMH_CLIENT_SOURCE_TYPE_NORMAL) ||
 304                     loc.node == mon->desk->focus) {
 305                         return;
 306                 }
 307                 focus_node(loc.monitor, loc.desktop, loc.node);
 308         } else if (e->type == ewmh->_NET_WM_DESKTOP) {
 309                 coordinates_t dloc;
 310                 if (ewmh_locate_desktop(e->data.data32[0], &dloc)) {
 311                         transfer_node(loc.monitor, loc.desktop, loc.node, dloc.monitor, dloc.desktop, dloc.desktop->focus);
 312                 }
 313         } else if (e->type == ewmh->_NET_CLOSE_WINDOW) {
 314                 close_node(loc.node);
 315         }
 316 }
 317
 318 void focus_in(xcb_generic_event_t *evt)
 319 {
 320         xcb_focus_in_event_t *e = (xcb_focus_in_event_t *) evt;
 321
 322         if (e->mode == XCB_NOTIFY_MODE_GRAB || e->mode == XCB_NOTIFY_MODE_UNGRAB
 323             || e->detail == XCB_NOTIFY_DETAIL_POINTER || e->detail == XCB_NOTIFY_DETAIL_POINTER_ROOT
 324             || e->detail == XCB_NOTIFY_DETAIL_NONE) {
 325                 return;
 326         }
 327
 328         if (mon->desk->focus != NULL && e->event == mon->desk->focus->id) {
 329                 return;
 330         }
 331
 332         coordinates_t loc;
 333         if (locate_window(e->event, &loc)) {
 334                 // prevent input focus stealing
 335                 update_input_focus();
 336         }
 337 }
 338
 339 void button_press(xcb_generic_event_t *evt)
 340 {
 341         xcb_button_press_event_t *e = (xcb_button_press_event_t *) evt;
 342         bool replay = false;
 343         uint8_t buttons[] = {XCB_BUTTON_INDEX_1, XCB_BUTTON_INDEX_2, XCB_BUTTON_INDEX_3};
 344         for (unsigned int i = 0; i < LENGTH(buttons); i++) {
 345                 if (e->detail != buttons[i]) {
 346                         continue;
 347                 }
 348                 if (click_to_focus && cleaned_mask(e->state) == XCB_NONE) {
 349                         bool pff = pointer_follows_focus;
 350                         bool pfm = pointer_follows_monitor;
 351                         pointer_follows_focus = false;
 352                         pointer_follows_monitor = false;
 353                         replay = !grab_pointer(ACTION_FOCUS) || !swallow_first_click;
 354                         pointer_follows_focus = pff;
 355                         pointer_follows_monitor = pfm;
 356                 } else {
 357                         grab_pointer(pointer_actions[i]);
 358                 }
 359         }
 360         xcb_allow_events(dpy, replay ? XCB_ALLOW_REPLAY_POINTER : XCB_ALLOW_SYNC_POINTER, e->time);
 361         xcb_flush(dpy);
 362 }
 363
 364 void enter_notify(xcb_generic_event_t *evt)
 365 {
 366         xcb_enter_notify_event_t *e = (xcb_enter_notify_event_t *) evt;
 367         xcb_window_t win = e->event;
 368
 369         if (e->mode != XCB_NOTIFY_MODE_NORMAL || e->detail == XCB_NOTIFY_DETAIL_INFERIOR) {
 370                 return;
 371         }
 372
 373         /* Ignore the enter notify events that we generated by unmapping the motion
 374          * recorder window in `query_pointer`. */
 375         if (motion_recorder.enabled && motion_recorder.sequence == e->sequence) {
 376                 return;
 377         }
 378
 379         if (win == mon->root || (mon->desk->focus != NULL &&
 380                                  (win == mon->desk->focus->id ||
 381                                   (mon->desk->focus->presel != NULL &&
 382                                    win == mon->desk->focus->presel->feedback)))) {
 383                 return;
 384         }
 385
 386         update_motion_recorder();
 387 }
 388
 389 void motion_notify(xcb_generic_event_t *evt)
 390 {
 391         xcb_motion_notify_event_t *e = (xcb_motion_notify_event_t *) evt;
 392
 393         static uint16_t last_motion_x = 0, last_motion_y = 0;
 394         static xcb_timestamp_t last_motion_time = 0;
 395
 396         int64_t dtime = e->time - last_motion_time;
 397
 398         /* Ignore unintentional pointer motions. */
 399         if (dtime > 1000) {
 400                 last_motion_time = e->time;
 401                 last_motion_x = e->event_x;
 402                 last_motion_y = e->event_y;
 403                 return;
 404         }
 405         int mdist = abs(e->event_x - last_motion_x) + abs(e->event_y - last_motion_y);
 406         if (mdist < 10) {
 407                 return;
 408         }
 409
 410         disable_motion_recorder();
 411
 412         xcb_window_t win = XCB_NONE;
 413         query_pointer(&win, NULL);
 414         coordinates_t loc;
 415         bool pff = pointer_follows_focus;
 416         bool pfm = pointer_follows_monitor;
 417         pointer_follows_focus = false;
 418         pointer_follows_monitor = false;
 419         auto_raise = false;
 420
 421         if (locate_window(win, &loc)) {
 422                 if (loc.monitor->desk == loc.desktop && loc.node != mon->desk->focus) {
 423                         focus_node(loc.monitor, loc.desktop, loc.node);
 424                 }
 425         } else {
 426                 xcb_point_t pt = {e->root_x, e->root_y};
 427                 monitor_t *m = monitor_from_point(pt);
 428                 if (m != NULL && m != mon) {
 429                         focus_node(m, m->desk, m->desk->focus);
 430                 }
 431         }
 432
 433         pointer_follows_focus = pff;
 434         pointer_follows_monitor = pfm;
 435         auto_raise = true;
 436 }
 437
 438 void handle_state(monitor_t *m, desktop_t *d, node_t *n, xcb_atom_t state, unsigned int action)
 439 {
 440         if (state == ewmh->_NET_WM_STATE_FULLSCREEN) {
 441                 if (action == XCB_EWMH_WM_STATE_ADD) {
 442                         set_state(m, d, n, STATE_FULLSCREEN);
 443                 } else if (action == XCB_EWMH_WM_STATE_REMOVE) {
 444                         if (n->client->state == STATE_FULLSCREEN) {
 445                                 set_state(m, d, n, n->client->last_state);
 446                         }
 447                 } else if (action == XCB_EWMH_WM_STATE_TOGGLE) {
 448                         set_state(m, d, n, IS_FULLSCREEN(n->client) ? n->client->last_state : STATE_FULLSCREEN);
 449                 }
 450                 arrange(m, d);
 451         } else if (state == ewmh->_NET_WM_STATE_BELOW) {
 452                 if (action == XCB_EWMH_WM_STATE_ADD) {
 453                         set_layer(m, d, n, LAYER_BELOW);
 454                 } else if (action == XCB_EWMH_WM_STATE_REMOVE) {
 455                         if (n->client->layer == LAYER_BELOW) {
 456                                 set_layer(m, d, n, n->client->last_layer);
 457                         }
 458                 } else if (action == XCB_EWMH_WM_STATE_TOGGLE) {
 459                         set_layer(m, d, n, n->client->layer == LAYER_BELOW ? n->client->last_layer : LAYER_BELOW);
 460                 }
 461         } else if (state == ewmh->_NET_WM_STATE_ABOVE) {
 462                 if (action == XCB_EWMH_WM_STATE_ADD) {
 463                         set_layer(m, d, n, LAYER_ABOVE);
 464                 } else if (action == XCB_EWMH_WM_STATE_REMOVE) {
 465                         if (n->client->layer == LAYER_ABOVE) {
 466                                 set_layer(m, d, n, n->client->last_layer);
 467                         }
 468                 } else if (action == XCB_EWMH_WM_STATE_TOGGLE) {
 469                         set_layer(m, d, n, n->client->layer == LAYER_ABOVE ? n->client->last_layer : LAYER_ABOVE);
 470                 }
 471         } else if (state == ewmh->_NET_WM_STATE_HIDDEN) {
 472                 if (action == XCB_EWMH_WM_STATE_ADD) {
 473                         set_hidden(m, d, n, true);
 474                 } else if (action == XCB_EWMH_WM_STATE_REMOVE) {
 475                         set_hidden(m, d, n, false);
 476                 } else if (action == XCB_EWMH_WM_STATE_TOGGLE) {
 477                         set_hidden(m, d, n, !n->hidden);
 478                 }
 479         } else if (state == ewmh->_NET_WM_STATE_STICKY) {
 480                 if (action == XCB_EWMH_WM_STATE_ADD) {
 481                         set_sticky(m, d, n, true);
 482                 } else if (action == XCB_EWMH_WM_STATE_REMOVE) {
 483                         set_sticky(m, d, n, false);
 484                 } else if (action == XCB_EWMH_WM_STATE_TOGGLE) {
 485                         set_sticky(m, d, n, !n->sticky);
 486                 }
 487         } else if (state == ewmh->_NET_WM_STATE_DEMANDS_ATTENTION) {
 488                 if (action == XCB_EWMH_WM_STATE_ADD) {
 489                         set_urgent(m, d, n, true);
 490                 } else if (action == XCB_EWMH_WM_STATE_REMOVE) {
 491                         set_urgent(m, d, n, false);
 492                 } else if (action == XCB_EWMH_WM_STATE_TOGGLE) {
 493                         set_urgent(m, d, n, !n->client->urgent);
 494                 }
 495 #define HANDLE_WM_STATE(s)  \
 496         } else if (state == ewmh->_NET_WM_STATE_##s) { \
 497                 if (action == XCB_EWMH_WM_STATE_ADD) { \
 498                         n->client->wm_flags |= WM_FLAG_##s; \
 499                 } else if (action == XCB_EWMH_WM_STATE_REMOVE) { \
 500                         n->client->wm_flags &= ~WM_FLAG_##s; \
 501                 } else if (action == XCB_EWMH_WM_STATE_TOGGLE) { \
 502                         n->client->wm_flags ^= WM_FLAG_##s; \
 503                 } \
 504                 ewmh_wm_state_update(n);
 505         HANDLE_WM_STATE(MODAL)
 506         HANDLE_WM_STATE(MAXIMIZED_VERT)
 507         HANDLE_WM_STATE(MAXIMIZED_HORZ)
 508         HANDLE_WM_STATE(SHADED)
 509         HANDLE_WM_STATE(SKIP_TASKBAR)
 510         HANDLE_WM_STATE(SKIP_PAGER)
 511         }
 512 #undef HANDLE_WM_STATE
 513 }
 514
 515 void process_error(xcb_generic_event_t *evt)
 516 {
 517         xcb_request_error_t *e = (xcb_request_error_t *) evt;
 518         warn("Failed request: %s, %s: 0x%08X.\n", xcb_event_get_request_label(e->major_opcode), xcb_event_get_error_label(e->error_code), e->bad_value);
 519 }