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