window.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <stdarg.h>
   4 #include <string.h>
   5 #include <xcb/xcb.h>
   6 #include <xcb/xcb_event.h>
   7 #include <xcb/xcb_icccm.h>
   8 #include "types.h"
   9 #include "tree.h"
  10 #include "bspwm.h"
  11 #include "settings.h"
  12 #include "ewmh.h"
  13 #include "rules.h"
  14 #include "window.h"
  15
  16 void center(xcb_rectangle_t a, xcb_rectangle_t *b)
  17 {
  18     if (b->width < a.width)
  19         b->x = a.x + (a.width - b->width) / 2;
  20     if (b->height < a.height)
  21         b->y = a.y + (a.height - b->height) / 2;
  22 }
  23
  24 bool contains(xcb_rectangle_t a, xcb_rectangle_t b)
  25 {
  26     return (a.x <= b.x && (a.x + a.width) >= (b.x + b.width)
  27             && a.y <= b.y && (a.y + a.height) >= (b.y + b.height));
  28 }
  29
  30 bool might_cover(desktop_t *d, node_t *n)
  31 {
  32     for (node_t *f = first_extrema(d->root); f != NULL; f = next_leaf(f, d->root))
  33         if (f != n && is_floating(f->client) && contains(n->client->floating_rectangle, f->client->floating_rectangle))
  34             return true;
  35     return false;
  36 }
  37
  38 bool locate_window(xcb_window_t win, window_location_t *loc)
  39 {
  40     for (monitor_t *m = mon_head; m != NULL; m = m->next)
  41         for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
  42             for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n, d->root))
  43                 if (n->client->window == win) {
  44                     loc->monitor = m;
  45                     loc->desktop = d;
  46                     loc->node = n;
  47                     return true;
  48                 }
  49     return false;
  50 }
  51
  52 bool locate_desktop(char *name, desktop_location_t *loc)
  53 {
  54     for (monitor_t *m = mon_head; m != NULL; m = m->next)
  55         for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
  56             if (strcmp(d->name, name) == 0) {
  57                 loc->monitor = m;
  58                 loc->desktop = d;
  59                 return true;
  60             }
  61     return false;
  62 }
  63
  64 bool is_inside(monitor_t *m, xcb_point_t pt)
  65 {
  66     xcb_rectangle_t r = m->rectangle;
  67     return (r.x <= pt.x && pt.x < (r.x + r.width)
  68             && r.y <= pt.y && pt.y < (r.y + r.height));
  69 }
  70
  71 void get_side_handle(client_t *c, direction_t dir, xcb_point_t *pt)
  72 {
  73     xcb_rectangle_t rect = (is_tiled(c) ? c->tiled_rectangle : c->floating_rectangle);
  74     switch (dir) {
  75         case DIR_RIGHT:
  76             pt->x = rect.x + rect.width;
  77             pt->y = rect.y + (rect.height / 2);
  78             break;
  79         case DIR_DOWN:
  80             pt->x = rect.x + (rect.width / 2);
  81             pt->y = rect.y + rect.height;
  82             break;
  83         case DIR_LEFT:
  84             pt->x = rect.x;
  85             pt->y = rect.y + (rect.height / 2);
  86             break;
  87         case DIR_UP:
  88             pt->x = rect.x + (rect.width / 2);
  89             pt->y = rect.y;
  90             break;
  91     }
  92 }
  93
  94 monitor_t *monitor_from_point(xcb_point_t pt)
  95 {
  96     for (monitor_t *m = mon_head; m != NULL; m = m->next)
  97         if (is_inside(m, pt))
  98             return m;
  99     return NULL;
 100 }
 101
 102 monitor_t *underlying_monitor(client_t *c)
 103 {
 104     xcb_point_t pt = (xcb_point_t) {c->floating_rectangle.x, c->floating_rectangle.y};
 105     return monitor_from_point(pt);
 106 }
 107
 108 void manage_window(monitor_t *m, desktop_t *d, xcb_window_t win)
 109 {
 110     window_location_t loc;
 111     xcb_get_window_attributes_reply_t *wa = xcb_get_window_attributes_reply(dpy, xcb_get_window_attributes(dpy, win), NULL);
 112     uint8_t override_redirect = 0;
 113
 114     if (wa != NULL) {
 115         override_redirect = wa->override_redirect;
 116         free(wa);
 117     }
 118
 119     if (override_redirect || locate_window(win, &loc))
 120         return;
 121
 122     bool floating = false, follow = false, transient = false, fullscreen = false, takes_focus = true, manage = true;
 123
 124     handle_rules(win, &m, &d, &floating, &follow, &transient, &fullscreen, &takes_focus, &manage);
 125
 126     if (!manage) {
 127         disable_shadow(win);
 128         window_show(win);
 129         return;
 130     }
 131
 132     client_t *c = make_client(win);
 133     update_floating_rectangle(c);
 134
 135     xcb_icccm_get_wm_class_reply_t reply;
 136     if (xcb_icccm_get_wm_class_reply(dpy, xcb_icccm_get_wm_class(dpy, win), &reply, NULL) == 1) {
 137         strncpy(c->class_name, reply.class_name, sizeof(c->class_name));
 138         xcb_icccm_get_wm_class_reply_wipe(&reply);
 139     }
 140
 141     if (c->transient)
 142         floating = true;
 143
 144     node_t *birth = make_node();
 145     birth->client = c;
 146
 147     insert_node(m, d, birth);
 148
 149     disable_shadow(c->window);
 150
 151     if (floating)
 152         toggle_floating(birth);
 153
 154     if (d->focus != NULL && d->focus->client->fullscreen)
 155         toggle_fullscreen(m, d->focus->client);
 156
 157     if (fullscreen)
 158         toggle_fullscreen(m, birth->client);
 159
 160     if (is_tiled(c))
 161         window_lower(c->window);
 162
 163     c->transient = transient;
 164
 165     bool give_focus = takes_focus && (d == mon->desk || follow);
 166
 167     if (give_focus)
 168         focus_node(m, d, birth);
 169
 170     xcb_rectangle_t *frect = &birth->client->floating_rectangle;
 171     if (frect->x == 0 && frect->y == 0)
 172         center(m->rectangle, frect);
 173
 174     fit_monitor(m, birth->client);
 175
 176     arrange(m, d);
 177
 178     if (d == m->desk && visible)
 179         window_show(c->window);
 180
 181     /* the same function is already called in `focus_node` but has no effects on unmapped windows */
 182     if (give_focus)
 183         xcb_set_input_focus(dpy, XCB_INPUT_FOCUS_POINTER_ROOT, win, XCB_CURRENT_TIME);
 184
 185     uint32_t values[] = {(focus_follows_pointer ? CLIENT_EVENT_MASK_FFP : CLIENT_EVENT_MASK)};
 186     xcb_change_window_attributes(dpy, c->window, XCB_CW_EVENT_MASK, values);
 187
 188     num_clients++;
 189     ewmh_set_wm_desktop(birth, d);
 190     ewmh_update_client_list();
 191 }
 192
 193 void adopt_orphans(void)
 194 {
 195     xcb_query_tree_reply_t *qtr = xcb_query_tree_reply(dpy, xcb_query_tree(dpy, root), NULL);
 196     if (qtr == NULL)
 197         return;
 198     int len = xcb_query_tree_children_length(qtr);
 199     xcb_window_t *wins = xcb_query_tree_children(qtr);
 200     for (int i = 0; i < len; i++) {
 201         uint32_t idx;
 202         xcb_window_t win = wins[i];
 203         window_hide(win);
 204         if (xcb_ewmh_get_wm_desktop_reply(ewmh, xcb_ewmh_get_wm_desktop(ewmh, win), &idx, NULL) == 1) {
 205             desktop_location_t loc;
 206             if (ewmh_locate_desktop(idx, &loc))
 207                 manage_window(loc.monitor, loc.desktop, win);
 208             else
 209                 manage_window(mon, mon->desk, win);
 210         }
 211     }
 212     free(qtr);
 213 }
 214
 215 void window_draw_border(node_t *n, bool focused_window, bool focused_monitor)
 216 {
 217     if (n == NULL || border_width < 1 || n->client->border_width < 1)
 218         return;
 219
 220     xcb_window_t win = n->client->window;
 221     uint32_t border_color_pxl = get_border_color(n->client, focused_window, focused_monitor);
 222
 223     if (split_mode == MODE_AUTOMATIC || !focused_monitor || !focused_window) {
 224         xcb_change_window_attributes(dpy, win, XCB_CW_BORDER_PIXEL, &border_color_pxl);
 225     } else {
 226         xcb_rectangle_t actual_rectangle = (is_tiled(n->client) ? n->client->tiled_rectangle : n->client->floating_rectangle);
 227
 228         uint16_t width = actual_rectangle.width;
 229         uint16_t height = actual_rectangle.height;
 230
 231         uint16_t full_width = width + 2 * border_width;
 232         uint16_t full_height = height + 2 * border_width;
 233
 234         xcb_rectangle_t border_rectangles[] =
 235         {
 236             { width, 0, 2 * border_width, height + 2 * border_width },
 237             { 0, height, width + 2 * border_width, 2 * border_width }
 238         };
 239
 240         xcb_rectangle_t *presel_rectangles;
 241
 242         uint8_t win_depth = root_depth;
 243         xcb_get_geometry_reply_t *geo = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, win), NULL);
 244         if (geo != NULL)
 245             win_depth = geo->depth;
 246         free(geo);
 247
 248         xcb_pixmap_t pix = xcb_generate_id(dpy);
 249         xcb_create_pixmap(dpy, win_depth, pix, win, full_width, full_height);
 250
 251         xcb_gcontext_t gc = xcb_generate_id(dpy);
 252         xcb_create_gc(dpy, gc, pix, 0, NULL);
 253
 254         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &border_color_pxl);
 255         xcb_poly_fill_rectangle(dpy, pix, gc, LENGTH(border_rectangles), border_rectangles);
 256
 257         uint16_t fence = (int16_t) (n->split_ratio * ((split_dir == DIR_UP || split_dir == DIR_DOWN) ? height : width));
 258         presel_rectangles = malloc(2 * sizeof(xcb_rectangle_t));
 259         switch (split_dir) {
 260             case DIR_UP:
 261                 presel_rectangles[0] = (xcb_rectangle_t) {width, 0, 2 * border_width, fence};
 262                 presel_rectangles[1] = (xcb_rectangle_t) {0, height + border_width, full_width, border_width};
 263                 break;
 264             case DIR_DOWN:
 265                 presel_rectangles[0] = (xcb_rectangle_t) {width, fence + 1, 2 * border_width, height + border_width - (fence + 1)};
 266                 presel_rectangles[1] = (xcb_rectangle_t) {0, height, full_width, border_width};
 267                 break;
 268             case DIR_LEFT:
 269                 presel_rectangles[0] = (xcb_rectangle_t) {0, height, fence, 2 * border_width};
 270                 presel_rectangles[1] = (xcb_rectangle_t) {width + border_width, 0, border_width, full_height};
 271                 break;
 272             case DIR_RIGHT:
 273                 presel_rectangles[0] = (xcb_rectangle_t) {fence + 1, height, width + border_width - (fence + 1), 2 * border_width};
 274                 presel_rectangles[1] = (xcb_rectangle_t) {width, 0, border_width, full_height};
 275                 break;
 276         }
 277
 278         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &presel_border_color_pxl);
 279         xcb_poly_fill_rectangle(dpy, pix, gc, 2, presel_rectangles);
 280         xcb_change_window_attributes(dpy, win, XCB_CW_BORDER_PIXMAP, &pix);
 281         free(presel_rectangles);
 282         xcb_free_gc(dpy, gc);
 283         xcb_free_pixmap(dpy, pix);
 284     }
 285 }
 286
 287 void window_close(node_t *n)
 288 {
 289     if (n == NULL || n->client->locked)
 290         return;
 291
 292     PRINTF("close window %X\n", n->client->window);
 293
 294     xcb_atom_t WM_DELETE_WINDOW;
 295     xcb_window_t win = n->client->window;
 296     xcb_client_message_event_t e;
 297
 298     xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(dpy, xcb_intern_atom(dpy, 0, strlen("WM_DELETE_WINDOW"), "WM_DELETE_WINDOW"), NULL);
 299     if (reply) {
 300         WM_DELETE_WINDOW = reply->atom;
 301         free(reply);
 302     } else {
 303         warn("close_window %X: could not acquire WM_DELETE_WINDOW atom\n", win);
 304         return;
 305     }
 306
 307     e.response_type = XCB_CLIENT_MESSAGE;
 308     e.window = win;
 309     e.format = 32;
 310     e.sequence = 0;
 311     e.type = ewmh->WM_PROTOCOLS;
 312     e.data.data32[0] = WM_DELETE_WINDOW;
 313     e.data.data32[1] = XCB_CURRENT_TIME;
 314
 315     xcb_send_event(dpy, false, win, XCB_EVENT_MASK_NO_EVENT, (char *) &e);
 316 }
 317
 318 void window_kill(desktop_t *d, node_t *n)
 319 {
 320     if (n == NULL)
 321         return;
 322
 323     PRINTF("kill window %X\n", n->client->window);
 324
 325     xcb_kill_client(dpy, n->client->window);
 326     remove_node(d, n);
 327 }
 328
 329 void toggle_fullscreen(monitor_t *m, client_t *c)
 330 {
 331     PRINTF("toggle fullscreen %X\n", c->window);
 332
 333     if (c->fullscreen) {
 334         c->fullscreen = false;
 335         xcb_atom_t values[] = {XCB_NONE};
 336         xcb_ewmh_set_wm_state(ewmh, c->window, LENGTH(values), values);
 337         if (is_tiled(c))
 338             window_lower(c->window);
 339     } else {
 340         c->fullscreen = true;
 341         xcb_atom_t values[] = {ewmh->_NET_WM_STATE_FULLSCREEN};
 342         xcb_ewmh_set_wm_state(ewmh, c->window, LENGTH(values), values);
 343         window_raise(c->window);
 344         window_border_width(c->window, 0);
 345         xcb_rectangle_t r = m->rectangle;
 346         window_move_resize(c->window, r.x, r.y, r.width, r.height);
 347     }
 348     update_current();
 349 }
 350
 351 void toggle_floating(node_t *n)
 352 {
 353     if (n == NULL || n->client->transient || n->client->fullscreen)
 354         return;
 355
 356     PRINTF("toggle floating %X\n", n->client->window);
 357
 358     client_t *c = n->client;
 359     c->floating = !c->floating;
 360     n->vacant = !n->vacant;
 361     update_vacant_state(n->parent);
 362     if (c->floating) {
 363         window_raise(c->window);
 364         enable_shadow(c->window);
 365         unrotate_brother(n);
 366     } else {
 367         window_lower(c->window);
 368         disable_shadow(c->window);
 369         rotate_brother(n);
 370     }
 371     update_current();
 372 }
 373
 374 void toggle_locked(client_t *c)
 375 {
 376     PRINTF("toggle locked %X\n", c->window);
 377
 378     c->locked = !c->locked;
 379 }
 380
 381 void set_urgency(monitor_t *m, desktop_t *d, node_t *n, bool value)
 382 {
 383     if (value && mon->desk->focus == n)
 384         return;
 385     n->client->urgent = value;
 386     put_status();
 387     if (m->desk == d)
 388         arrange(m, d);
 389 }
 390
 391 void set_shadow(xcb_window_t win, uint32_t value)
 392 {
 393     if (!apply_shadow_property)
 394         return;
 395     xcb_change_property(dpy, XCB_PROP_MODE_REPLACE, win, compton_shadow, XCB_ATOM_CARDINAL, 32, 1, &value);
 396 }
 397
 398 void enable_shadow(xcb_window_t win)
 399 {
 400     set_shadow(win, 1);
 401 }
 402
 403 void disable_shadow(xcb_window_t win)
 404 {
 405     set_shadow(win, 0);
 406 }
 407
 408 void list_windows(char *rsp)
 409 {
 410     char line[MAXLEN];
 411
 412     for (monitor_t *m = mon_head; m != NULL; m = m->next)
 413         for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
 414             for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n, d->root)) {
 415                 snprintf(line, sizeof(line), "0x%X\n", n->client->window);
 416                 strncat(rsp, line, REMLEN(rsp));
 417             }
 418 }
 419
 420 uint32_t get_border_color(client_t *c, bool focused_window, bool focused_monitor)
 421 {
 422     if (c == NULL)
 423         return 0;
 424
 425     if (focused_monitor && focused_window) {
 426         if (c->locked)
 427             return focused_locked_border_color_pxl;
 428         else
 429             return focused_border_color_pxl;
 430     } else if (focused_window) {
 431         if (c->urgent)
 432             return urgent_border_color_pxl;
 433         else if (c->locked)
 434             return active_locked_border_color_pxl;
 435         else
 436             return active_border_color_pxl;
 437     } else {
 438         if (c->urgent)
 439             return urgent_border_color_pxl;
 440         else if (c->locked)
 441             return normal_locked_border_color_pxl;
 442         else
 443             return normal_border_color_pxl;
 444     }
 445 }
 446
 447 void update_floating_rectangle(client_t *c)
 448 {
 449     xcb_get_geometry_reply_t *geo = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, c->window), NULL);
 450
 451     if (geo != NULL)
 452         c->floating_rectangle = (xcb_rectangle_t) {geo->x, geo->y, geo->width, geo->height};
 453     else
 454         c->floating_rectangle = (xcb_rectangle_t) {0, 0, 32, 24};
 455
 456     free(geo);
 457 }
 458
 459
 460 void query_pointer(xcb_window_t *win, xcb_point_t *pt)
 461 {
 462     window_lower(motion_recorder);
 463     xcb_query_pointer_reply_t *qpr = xcb_query_pointer_reply(dpy, xcb_query_pointer(dpy, root), NULL);
 464     if (qpr != NULL) {
 465         if (win != NULL)
 466             *win = qpr->child;
 467         if (pt != NULL)
 468             *pt = (xcb_point_t) {qpr->root_x, qpr->root_y};
 469         free(qpr);
 470     }
 471     window_raise(motion_recorder);
 472 }
 473
 474 void window_focus(xcb_window_t win)
 475 {
 476     window_location_t loc;
 477     if (locate_window(win, &loc)) {
 478         if (loc.node == mon->desk->focus)
 479             return;
 480         focus_node(loc.monitor, loc.desktop, loc.node);
 481     }
 482 }
 483
 484 void window_border_width(xcb_window_t win, uint32_t bw)
 485 {
 486     uint32_t values[] = {bw};
 487     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_BORDER_WIDTH, values);
 488 }
 489
 490 void window_move(xcb_window_t win, int16_t x, int16_t y)
 491 {
 492     uint32_t values[] = {x, y};
 493     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y, values);
 494 }
 495
 496 void window_move_resize(xcb_window_t win, int16_t x, int16_t y, uint16_t w, uint16_t h)
 497 {
 498     uint32_t values[] = {x, y, w, h};
 499     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y_WIDTH_HEIGHT, values);
 500 }
 501
 502 void window_raise(xcb_window_t win)
 503 {
 504     uint32_t values[] = {XCB_STACK_MODE_ABOVE};
 505     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
 506 }
 507
 508 void stack_tiled(desktop_t *d)
 509 {
 510     for (node_list_t *a = d->history->head; a != NULL; a = a->next)
 511         if (a->latest && is_tiled(a->node->client))
 512             window_lower(a->node->client->window);
 513 }
 514
 515 void window_lower(xcb_window_t win)
 516 {
 517     uint32_t values[] = {XCB_STACK_MODE_BELOW};
 518     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
 519 }
 520
 521 void window_set_visibility(xcb_window_t win, bool visible)
 522 {
 523     uint32_t values_off[] = {ROOT_EVENT_MASK & ~XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY};
 524     uint32_t values_on[] = {ROOT_EVENT_MASK};
 525     xcb_change_window_attributes(dpy, root, XCB_CW_EVENT_MASK, values_off);
 526     if (visible)
 527         xcb_map_window(dpy, win);
 528     else
 529         xcb_unmap_window(dpy, win);
 530     xcb_change_window_attributes(dpy, root, XCB_CW_EVENT_MASK, values_on);
 531 }
 532
 533 void window_hide(xcb_window_t win)
 534 {
 535     window_set_visibility(win, false);
 536 }
 537
 538 void window_show(xcb_window_t win)
 539 {
 540     window_set_visibility(win, true);
 541 }
 542
 543 void toggle_visibility(void)
 544 {
 545     if (visible)
 546         clear_input_focus();
 547     visible = !visible;
 548     for (monitor_t *m = mon_head; m != NULL; m = m->next)
 549         for (node_t *n = first_extrema(m->desk->root); n != NULL; n = next_leaf(n, m->desk->root))
 550             window_set_visibility(n->client->window, visible);
 551     if (visible)
 552         update_current();
 553 }
 554
 555 void enable_motion_recorder(void)
 556 {
 557     window_raise(motion_recorder);
 558     window_show(motion_recorder);
 559 }
 560
 561 void disable_motion_recorder(void)
 562 {
 563     window_hide(motion_recorder);
 564 }
 565
 566 void clear_input_focus(void)
 567 {
 568     xcb_set_input_focus(dpy, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
 569 }