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 <stdlib.h>
  26 #include <stdbool.h>
  27 #include "bspwm.h"
  28 #include "ewmh.h"
  29 #include "monitor.h"
  30 #include "query.h"
  31 #include "settings.h"
  32 #include "subscribe.h"
  33 #include "tree.h"
  34 #include "window.h"
  35 #include "pointer.h"
  36 #include "events.h"
  37
  38 void handle_event(xcb_generic_event_t *evt)
  39 {
  40         uint8_t resp_type = XCB_EVENT_RESPONSE_TYPE(evt);
  41         switch (resp_type) {
  42                 case XCB_MAP_REQUEST:
  43                         map_request(evt);
  44                         break;
  45                 case XCB_DESTROY_NOTIFY:
  46                         destroy_notify(evt);
  47                         break;
  48                 case XCB_UNMAP_NOTIFY:
  49                         unmap_notify(evt);
  50                         break;
  51                 case XCB_CLIENT_MESSAGE:
  52                         client_message(evt);
  53                         break;
  54                 case XCB_CONFIGURE_REQUEST:
  55                         configure_request(evt);
  56                         break;
  57                 case XCB_PROPERTY_NOTIFY:
  58                         property_notify(evt);
  59                         break;
  60                 case XCB_ENTER_NOTIFY:
  61                         enter_notify(evt);
  62                         break;
  63                 case XCB_BUTTON_PRESS:
  64                         button_press(evt);
  65                         break;
  66                 case XCB_MOTION_NOTIFY:
  67                         motion_notify(evt);
  68                         break;
  69                 case XCB_FOCUS_IN:
  70                         focus_in(evt);
  71                         break;
  72                 case 0:
  73                         process_error(evt);
  74                         break;
  75                 default:
  76                         if (randr && resp_type == randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY) {
  77                                 update_monitors();
  78                         }
  79                         break;
  80         }
  81 }
  82
  83 void map_request(xcb_generic_event_t *evt)
  84 {
  85         xcb_map_request_event_t *e = (xcb_map_request_event_t *) evt;
  86
  87         schedule_window(e->window);
  88 }
  89
  90 void configure_request(xcb_generic_event_t *evt)
  91 {
  92         xcb_configure_request_event_t *e = (xcb_configure_request_event_t *) evt;
  93
  94         coordinates_t loc;
  95         bool is_managed = locate_window(e->window, &loc);
  96         client_t *c = (is_managed ? loc.node->client : NULL);
  97         uint16_t width, height;
  98
  99         if (!is_managed) {
 100                 uint16_t mask = 0;
 101                 uint32_t values[7];
 102                 unsigned short i = 0;
 103
 104                 if (e->value_mask & XCB_CONFIG_WINDOW_X) {
 105                         mask |= XCB_CONFIG_WINDOW_X;
 106                         values[i++] = e->x;
 107                 }
 108
 109                 if (e->value_mask & XCB_CONFIG_WINDOW_Y) {
 110                         mask |= XCB_CONFIG_WINDOW_Y;
 111                         values[i++] = e->y;
 112                 }
 113
 114                 if (e->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
 115                         mask |= XCB_CONFIG_WINDOW_WIDTH;
 116                         values[i++] = e->width;
 117                 }
 118
 119                 if (e->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
 120                         mask |= XCB_CONFIG_WINDOW_HEIGHT;
 121                         values[i++] = e->height;
 122                 }
 123
 124                 if (e->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH) {
 125                         mask |= XCB_CONFIG_WINDOW_BORDER_WIDTH;
 126                         values[i++] = e->border_width;
 127                 }
 128
 129                 if (e->value_mask & XCB_CONFIG_WINDOW_SIBLING) {
 130                         mask |= XCB_CONFIG_WINDOW_SIBLING;
 131                         values[i++] = e->sibling;
 132                 }
 133
 134                 if (e->value_mask & XCB_CONFIG_WINDOW_STACK_MODE) {
 135                         mask |= XCB_CONFIG_WINDOW_STACK_MODE;
 136                         values[i++] = e->stack_mode;
 137                 }
 138
 139                 xcb_configure_window(dpy, e->window, mask, values);
 140
 141         } else if (IS_FLOATING(c)) {
 142                 width = c->floating_rectangle.width;
 143                 height = c->floating_rectangle.height;
 144
 145                 if (e->value_mask & XCB_CONFIG_WINDOW_X) {
 146                         c->floating_rectangle.x = e->x;
 147                 }
 148
 149                 if (e->value_mask & XCB_CONFIG_WINDOW_Y) {
 150                         c->floating_rectangle.y = e->y;
 151                 }
 152
 153                 if (e->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
 154                         width = e->width;
 155                 }
 156
 157                 if (e->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
 158                         height = e->height;
 159                 }
 160
 161                 apply_size_hints(c, &width, &height);
 162                 c->floating_rectangle.width = width;
 163                 c->floating_rectangle.height = height;
 164                 xcb_rectangle_t r = c->floating_rectangle;
 165
 166                 window_move_resize(e->window, r.x, r.y, r.width, r.height);
 167
 168                 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);
 169
 170                 monitor_t *m = monitor_from_client(c);
 171                 if (m != loc.monitor) {
 172                         transfer_node(loc.monitor, loc.desktop, loc.node, m, m->desk, m->desk->focus);
 173                 }
 174         } else {
 175                 if (c->state == STATE_PSEUDO_TILED) {
 176                         width = c->floating_rectangle.width;
 177                         height = c->floating_rectangle.height;
 178                         if (e->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
 179                                 width = e->width;
 180                         }
 181                         if (e->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
 182                                 height = e->height;
 183                         }
 184                         apply_size_hints(c, &width, &height);
 185                         if (width != c->floating_rectangle.width || height != c->floating_rectangle.height) {
 186                                 c->floating_rectangle.width = width;
 187                                 c->floating_rectangle.height = height;
 188                                 arrange(loc.monitor, loc.desktop);
 189                         }
 190                 }
 191
 192
 193                 xcb_configure_notify_event_t evt;
 194                 unsigned int bw = c->border_width;
 195
 196                 xcb_rectangle_t r = IS_FULLSCREEN(c) ? loc.monitor->rectangle : c->tiled_rectangle;
 197
 198                 evt.response_type = XCB_CONFIGURE_NOTIFY;
 199                 evt.event = e->window;
 200                 evt.window = e->window;
 201                 evt.above_sibling = XCB_NONE;
 202                 evt.x = r.x;
 203                 evt.y = r.y;
 204                 evt.width = r.width;
 205                 evt.height = r.height;
 206                 evt.border_width = bw;
 207                 evt.override_redirect = false;
 208
 209                 xcb_send_event(dpy, false, e->window, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (const char *) &evt);
 210         }
 211 }
 212
 213 void destroy_notify(xcb_generic_event_t *evt)
 214 {
 215         xcb_destroy_notify_event_t *e = (xcb_destroy_notify_event_t *) evt;
 216
 217         unmanage_window(e->window);
 218 }
 219
 220 void unmap_notify(xcb_generic_event_t *evt)
 221 {
 222         xcb_unmap_notify_event_t *e = (xcb_unmap_notify_event_t *) evt;
 223
 224         unmanage_window(e->window);
 225 }
 226
 227 void property_notify(xcb_generic_event_t *evt)
 228 {
 229         xcb_property_notify_event_t *e = (xcb_property_notify_event_t *) evt;
 230
 231         if (e->atom != XCB_ATOM_WM_HINTS && e->atom != XCB_ATOM_WM_NORMAL_HINTS) {
 232                 return;
 233         }
 234
 235         coordinates_t loc;
 236         if (!locate_window(e->window, &loc)) {
 237                         return;
 238         }
 239
 240         if (e->atom == XCB_ATOM_WM_HINTS) {
 241                 xcb_icccm_wm_hints_t hints;
 242                 if (xcb_icccm_get_wm_hints_reply(dpy, xcb_icccm_get_wm_hints(dpy, e->window), &hints, NULL) == 1 &&
 243                     (hints.flags & XCB_ICCCM_WM_HINT_X_URGENCY))
 244                         set_urgent(loc.monitor, loc.desktop, loc.node, xcb_icccm_wm_hints_get_urgency(&hints));
 245         } else if (e->atom == XCB_ATOM_WM_NORMAL_HINTS) {
 246                 client_t *c = loc.node->client;
 247                 if (xcb_icccm_get_wm_normal_hints_reply(dpy, xcb_icccm_get_wm_normal_hints(dpy, e->window), &c->size_hints, NULL) == 1) {
 248                         arrange(loc.monitor, loc.desktop);
 249                 }
 250         }
 251 }
 252
 253 void client_message(xcb_generic_event_t *evt)
 254 {
 255         xcb_client_message_event_t *e = (xcb_client_message_event_t *) evt;
 256
 257         if (e->type == ewmh->_NET_CURRENT_DESKTOP) {
 258                 coordinates_t loc;
 259                 if (ewmh_locate_desktop(e->data.data32[0], &loc)) {
 260                         focus_node(loc.monitor, loc.desktop, loc.desktop->focus);
 261                 }
 262                 return;
 263         }
 264
 265         coordinates_t loc;
 266         if (!locate_window(e->window, &loc)) {
 267                 return;
 268         }
 269
 270         if (e->type == ewmh->_NET_WM_STATE) {
 271                 handle_state(loc.monitor, loc.desktop, loc.node, e->data.data32[1], e->data.data32[0]);
 272                 handle_state(loc.monitor, loc.desktop, loc.node, e->data.data32[2], e->data.data32[0]);
 273         } else if (e->type == ewmh->_NET_ACTIVE_WINDOW) {
 274                 if ((ignore_ewmh_focus && e->data.data32[0] == XCB_EWMH_CLIENT_SOURCE_TYPE_NORMAL) ||
 275                     loc.node == mon->desk->focus) {
 276                         return;
 277                 }
 278                 focus_node(loc.monitor, loc.desktop, loc.node);
 279         } else if (e->type == ewmh->_NET_WM_DESKTOP) {
 280                 coordinates_t dloc;
 281                 if (ewmh_locate_desktop(e->data.data32[0], &dloc)) {
 282                         transfer_node(loc.monitor, loc.desktop, loc.node, dloc.monitor, dloc.desktop, dloc.desktop->focus);
 283                 }
 284         } else if (e->type == ewmh->_NET_CLOSE_WINDOW) {
 285                 close_node(loc.node);
 286         }
 287 }
 288
 289 void focus_in(xcb_generic_event_t *evt)
 290 {
 291         xcb_focus_in_event_t *e = (xcb_focus_in_event_t *) evt;
 292
 293         if (e->mode == XCB_NOTIFY_MODE_GRAB || e->mode == XCB_NOTIFY_MODE_UNGRAB
 294             || e->detail == XCB_NOTIFY_DETAIL_POINTER || e->detail == XCB_NOTIFY_DETAIL_POINTER_ROOT
 295             || e->detail == XCB_NOTIFY_DETAIL_NONE) {
 296                 return;
 297         }
 298
 299         if (mon->desk->focus != NULL && e->event == mon->desk->focus->id) {
 300                 return;
 301         }
 302
 303         coordinates_t loc;
 304         if (locate_window(e->event, &loc)) {
 305                 // prevent input focus stealing
 306                 update_input_focus();
 307         }
 308 }
 309
 310 void button_press(xcb_generic_event_t *evt)
 311 {
 312     xcb_button_press_event_t *e = (xcb_button_press_event_t *) evt;
 313     switch (e->detail) {
 314                 case XCB_BUTTON_INDEX_1:
 315                         if (click_to_focus && cleaned_mask(e->state) == XCB_NONE) {
 316                                 xcb_allow_events(dpy, XCB_ALLOW_REPLAY_POINTER, e->time);
 317                                 xcb_flush(dpy);
 318                                 grab_pointer(ACTION_FOCUS);
 319                         } else {
 320                                 grab_pointer(ACTION_MOVE);
 321                         }
 322                         break;
 323                 case XCB_BUTTON_INDEX_2:
 324                         grab_pointer(ACTION_RESIZE_SIDE);
 325                         break;
 326                 case XCB_BUTTON_INDEX_3:
 327                         grab_pointer(ACTION_RESIZE_CORNER);
 328                         break;
 329         }
 330 }
 331
 332 void enter_notify(xcb_generic_event_t *evt)
 333 {
 334         xcb_enter_notify_event_t *e = (xcb_enter_notify_event_t *) evt;
 335         xcb_window_t win = e->event;
 336
 337         if (e->mode != XCB_NOTIFY_MODE_NORMAL ||
 338             (mon->desk->focus != NULL &&
 339              mon->desk->focus->id == win)) {
 340                 return;
 341         }
 342
 343         xcb_get_window_attributes_reply_t *wa = xcb_get_window_attributes_reply(dpy, xcb_get_window_attributes(dpy, motion_recorder), NULL);
 344
 345         if (wa == NULL) {
 346                 return;
 347         }
 348
 349         if (wa->map_state == XCB_MAP_STATE_UNMAPPED) {
 350                 enable_motion_recorder();
 351         } else {
 352                 disable_motion_recorder();
 353         }
 354 }
 355
 356 void motion_notify(xcb_generic_event_t *evt)
 357 {
 358         xcb_motion_notify_event_t *e = (xcb_motion_notify_event_t *) evt;
 359
 360         static uint16_t last_motion_x = 0, last_motion_y = 0;
 361         static xcb_timestamp_t last_motion_time = 0;
 362
 363         int64_t dtime = e->time - last_motion_time;
 364
 365         if (dtime > 1000) {
 366                 last_motion_time = e->time;
 367                 last_motion_x = e->event_x;
 368                 last_motion_y = e->event_y;
 369                 return;
 370         }
 371
 372         int mdist = abs(e->event_x - last_motion_x) + abs(e->event_y - last_motion_y);
 373         if (mdist < 10) {
 374                 return;
 375         }
 376
 377         xcb_window_t win = XCB_NONE;
 378         xcb_point_t pt = {e->root_x, e->root_y};
 379         query_pointer(&win, NULL);
 380
 381         bool pfm_backup = pointer_follows_monitor;
 382         bool pff_backup = pointer_follows_focus;
 383         auto_raise = false;
 384         pointer_follows_monitor = false;
 385         pointer_follows_focus = false;
 386         coordinates_t loc;
 387         if (locate_window(win, &loc)) {
 388                 if (loc.node != mon->desk->focus) {
 389                         focus_node(loc.monitor, loc.desktop, loc.node);
 390                 }
 391         } else {
 392                 monitor_t *m = monitor_from_point(pt);
 393                 if (m != NULL && m != mon) {
 394                         focus_node(m, m->desk, m->desk->focus);
 395                 }
 396         }
 397         pointer_follows_monitor = pfm_backup;
 398         pointer_follows_focus = pff_backup;
 399         auto_raise = true;
 400
 401         disable_motion_recorder();
 402 }
 403
 404 void handle_state(monitor_t *m, desktop_t *d, node_t *n, xcb_atom_t state, unsigned int action)
 405 {
 406         if (state == ewmh->_NET_WM_STATE_FULLSCREEN) {
 407                 if (action == XCB_EWMH_WM_STATE_ADD) {
 408                         set_state(m, d, n, STATE_FULLSCREEN);
 409                 } else if (action == XCB_EWMH_WM_STATE_REMOVE) {
 410                         if (n->client->state == STATE_FULLSCREEN) {
 411                                 set_state(m, d, n, n->client->last_state);
 412                         }
 413                 } else if (action == XCB_EWMH_WM_STATE_TOGGLE) {
 414                         set_state(m, d, n, IS_FULLSCREEN(n->client) ? n->client->last_state : STATE_FULLSCREEN);
 415                 }
 416                 arrange(m, d);
 417         } else if (state == ewmh->_NET_WM_STATE_BELOW) {
 418                 if (action == XCB_EWMH_WM_STATE_ADD) {
 419                         set_layer(m, d, n, LAYER_BELOW);
 420                 } else if (action == XCB_EWMH_WM_STATE_REMOVE) {
 421                         if (n->client->layer == LAYER_BELOW) {
 422                                 set_layer(m, d, n, n->client->last_layer);
 423                         }
 424                 } else if (action == XCB_EWMH_WM_STATE_TOGGLE) {
 425                         set_layer(m, d, n, n->client->layer == LAYER_BELOW ? n->client->last_layer : LAYER_BELOW);
 426                 }
 427         } else if (state == ewmh->_NET_WM_STATE_ABOVE) {
 428                 if (action == XCB_EWMH_WM_STATE_ADD) {
 429                         set_layer(m, d, n, LAYER_ABOVE);
 430                 } else if (action == XCB_EWMH_WM_STATE_REMOVE) {
 431                         if (n->client->layer == LAYER_ABOVE) {
 432                                 set_layer(m, d, n, n->client->last_layer);
 433                         }
 434                 } else if (action == XCB_EWMH_WM_STATE_TOGGLE) {
 435                         set_layer(m, d, n, n->client->layer == LAYER_ABOVE ? n->client->last_layer : LAYER_ABOVE);
 436                 }
 437         } else if (state == ewmh->_NET_WM_STATE_STICKY) {
 438                 if (action == XCB_EWMH_WM_STATE_ADD) {
 439                         set_sticky(m, d, n, true);
 440                 } else if (action == XCB_EWMH_WM_STATE_REMOVE) {
 441                         set_sticky(m, d, n, false);
 442                 } else if (action == XCB_EWMH_WM_STATE_TOGGLE) {
 443                         set_sticky(m, d, n, !n->sticky);
 444                 }
 445         } else if (state == ewmh->_NET_WM_STATE_DEMANDS_ATTENTION) {
 446                 if (action == XCB_EWMH_WM_STATE_ADD) {
 447                         set_urgent(m, d, n, true);
 448                 } else if (action == XCB_EWMH_WM_STATE_REMOVE) {
 449                         set_urgent(m, d, n, false);
 450                 } else if (action == XCB_EWMH_WM_STATE_TOGGLE) {
 451                         set_urgent(m, d, n, !n->client->urgent);
 452                 }
 453 #define HANDLE_WM_STATE(s)  \
 454         } else if (state == ewmh->_NET_WM_STATE_##s) { \
 455                 if (action == XCB_EWMH_WM_STATE_ADD) { \
 456                         n->client->wm_flags |= WM_FLAG_##s; \
 457                 } else if (action == XCB_EWMH_WM_STATE_REMOVE) { \
 458                         n->client->wm_flags &= ~WM_FLAG_##s; \
 459                 } else if (action == XCB_EWMH_WM_STATE_TOGGLE) { \
 460                         n->client->wm_flags ^= WM_FLAG_##s; \
 461                 } \
 462                 ewmh_wm_state_update(n);
 463         HANDLE_WM_STATE(MODAL)
 464         HANDLE_WM_STATE(MAXIMIZED_VERT)
 465         HANDLE_WM_STATE(MAXIMIZED_HORZ)
 466         HANDLE_WM_STATE(SHADED)
 467         HANDLE_WM_STATE(SKIP_TASKBAR)
 468         HANDLE_WM_STATE(SKIP_PAGER)
 469         HANDLE_WM_STATE(HIDDEN)
 470         }
 471 #undef HANDLE_WM_STATE
 472 }
 473
 474 void process_error(xcb_generic_event_t *evt)
 475 {
 476         xcb_request_error_t *e = (xcb_request_error_t *) evt;
 477         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);
 478 }