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