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         xcb_pixmap_t pix = xcb_generate_id(dpy);
 225         xcb_create_pixmap(dpy, root_depth, pix, win, full_width, full_height);
 226
 227         xcb_gcontext_t gc = xcb_generate_id(dpy);
 228         xcb_create_gc(dpy, gc, pix, 0, NULL);
 229
 230         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &border_color_pxl);
 231         xcb_poly_fill_rectangle(dpy, pix, gc, LENGTH(border_rectangles), border_rectangles);
 232
 233         uint16_t fence = (int16_t) (n->split_ratio * ((split_dir == DIR_UP || split_dir == DIR_DOWN) ? height : width));
 234         presel_rectangles = malloc(2 * sizeof(xcb_rectangle_t));
 235         switch (split_dir) {
 236             case DIR_UP:
 237                 presel_rectangles[0] = (xcb_rectangle_t) {width, 0, 2 * border_width, fence};
 238                 presel_rectangles[1] = (xcb_rectangle_t) {0, height + border_width, full_width, border_width};
 239                 break;
 240             case DIR_DOWN:
 241                 presel_rectangles[0] = (xcb_rectangle_t) {width, fence + 1, 2 * border_width, height + border_width - (fence + 1)};
 242                 presel_rectangles[1] = (xcb_rectangle_t) {0, height, full_width, border_width};
 243                 break;
 244             case DIR_LEFT:
 245                 presel_rectangles[0] = (xcb_rectangle_t) {0, height, fence, 2 * border_width};
 246                 presel_rectangles[1] = (xcb_rectangle_t) {width + border_width, 0, border_width, full_height};
 247                 break;
 248             case DIR_RIGHT:
 249                 presel_rectangles[0] = (xcb_rectangle_t) {fence + 1, height, width + border_width - (fence + 1), 2 * border_width};
 250                 presel_rectangles[1] = (xcb_rectangle_t) {width, 0, border_width, full_height};
 251                 break;
 252         }
 253
 254         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &presel_border_color_pxl);
 255         xcb_poly_fill_rectangle(dpy, pix, gc, 2, presel_rectangles);
 256         xcb_change_window_attributes(dpy, win, XCB_CW_BORDER_PIXMAP, &pix);
 257         free(presel_rectangles);
 258         xcb_free_gc(dpy, gc);
 259         xcb_free_pixmap(dpy, pix);
 260     }
 261 }
 262
 263 void window_close(node_t *n)
 264 {
 265     if (n == NULL || n->client->locked)
 266         return;
 267
 268     PRINTF("close window %X\n", n->client->window);
 269
 270     xcb_atom_t WM_DELETE_WINDOW;
 271     xcb_window_t win = n->client->window;
 272     xcb_client_message_event_t e;
 273
 274     xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(dpy, xcb_intern_atom(dpy, 0, strlen("WM_DELETE_WINDOW"), "WM_DELETE_WINDOW"), NULL);
 275     if (reply) {
 276         WM_DELETE_WINDOW = reply->atom;
 277         free(reply);
 278     } else {
 279         warn("close_window %X: could not acquire WM_DELETE_WINDOW atom\n", win);
 280         return;
 281     }
 282
 283     e.response_type = XCB_CLIENT_MESSAGE;
 284     e.window = win;
 285     e.format = 32;
 286     e.sequence = 0;
 287     e.type = ewmh->WM_PROTOCOLS;
 288     e.data.data32[0] = WM_DELETE_WINDOW;
 289     e.data.data32[1] = XCB_CURRENT_TIME;
 290
 291     xcb_send_event(dpy, false, win, XCB_EVENT_MASK_NO_EVENT, (char *) &e);
 292 }
 293
 294 void window_kill(desktop_t *d, node_t *n)
 295 {
 296     if (n == NULL)
 297         return;
 298
 299     PRINTF("kill window %X\n", n->client->window);
 300
 301     xcb_kill_client(dpy, n->client->window);
 302     remove_node(d, n);
 303 }
 304
 305 void toggle_fullscreen(monitor_t *m, client_t *c)
 306 {
 307     PRINTF("toggle fullscreen %X\n", c->window);
 308
 309     if (c->fullscreen) {
 310         c->fullscreen = false;
 311         xcb_atom_t values[] = {XCB_NONE};
 312         xcb_ewmh_set_wm_state(ewmh, c->window, LENGTH(values), values);
 313         if (is_tiled(c))
 314             window_lower(c->window);
 315     } else {
 316         c->fullscreen = true;
 317         xcb_atom_t values[] = {ewmh->_NET_WM_STATE_FULLSCREEN};
 318         xcb_ewmh_set_wm_state(ewmh, c->window, LENGTH(values), values);
 319         window_raise(c->window);
 320         window_border_width(c->window, 0);
 321         xcb_rectangle_t r = m->rectangle;
 322         window_move_resize(c->window, r.x, r.y, r.width, r.height);
 323     }
 324     update_current();
 325 }
 326
 327 void toggle_floating(node_t *n)
 328 {
 329     if (n == NULL || n->client->transient || n->client->fullscreen)
 330         return;
 331
 332     PRINTF("toggle floating %X\n", n->client->window);
 333
 334     client_t *c = n->client;
 335     c->floating = !c->floating;
 336     n->vacant = !n->vacant;
 337     update_vacant_state(n->parent);
 338     if (c->floating)
 339         window_raise(c->window);
 340     else if (is_tiled(c))
 341         window_lower(c->window);
 342     if (c->floating)
 343         enable_shadow(c->window);
 344     else
 345         disable_shadow(c->window);
 346     update_current();
 347 }
 348
 349 void toggle_locked(client_t *c)
 350 {
 351     PRINTF("toggle locked %X\n", c->window);
 352
 353     c->locked = !c->locked;
 354 }
 355
 356 void set_shadow(xcb_window_t win, uint32_t value)
 357 {
 358     if (!apply_shadow_property)
 359         return;
 360     xcb_change_property(dpy, XCB_PROP_MODE_REPLACE, win, compton_shadow, XCB_ATOM_CARDINAL, 32, sizeof(value), &value);
 361 }
 362
 363 void enable_shadow(xcb_window_t win)
 364 {
 365     set_shadow(win, 1);
 366 }
 367
 368 void disable_shadow(xcb_window_t win)
 369 {
 370     set_shadow(win, 0);
 371 }
 372
 373 void list_windows(char *rsp)
 374 {
 375     char line[MAXLEN];
 376
 377     for (monitor_t *m = mon_head; m != NULL; m = m->next)
 378         for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
 379             for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n)) {
 380                 snprintf(line, sizeof(line), "0x%X\n", n->client->window);
 381                 strncat(rsp, line, REMLEN(rsp));
 382             }
 383 }
 384
 385 uint32_t get_border_color(client_t *c, bool focused_window, bool focused_monitor)
 386 {
 387     if (c == NULL)
 388         return 0;
 389
 390     if (focused_monitor && focused_window) {
 391         if (c->locked)
 392             return focused_locked_border_color_pxl;
 393         else
 394             return focused_border_color_pxl;
 395     } else if (focused_window) {
 396         if (c->urgent)
 397             return urgent_border_color_pxl;
 398         else if (c->locked)
 399             return active_locked_border_color_pxl;
 400         else
 401             return active_border_color_pxl;
 402     } else {
 403         if (c->urgent)
 404             return urgent_border_color_pxl;
 405         else if (c->locked)
 406             return normal_locked_border_color_pxl;
 407         else
 408             return normal_border_color_pxl;
 409     }
 410 }
 411
 412 void update_floating_rectangle(client_t *c)
 413 {
 414     xcb_get_geometry_reply_t *geom = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, c->window), NULL);
 415
 416     if (geom) {
 417         c->floating_rectangle = (xcb_rectangle_t) {geom->x, geom->y, geom->width, geom->height};
 418         free(geom);
 419     } else {
 420         c->floating_rectangle = (xcb_rectangle_t) {0, 0, 32, 24};
 421     }
 422 }
 423
 424
 425 void query_pointer(xcb_window_t *win, xcb_point_t *pt)
 426 {
 427     window_lower(motion_recorder);
 428     xcb_query_pointer_reply_t *qpr = xcb_query_pointer_reply(dpy, xcb_query_pointer(dpy, root), NULL);
 429     if (qpr != NULL) {
 430         if (win != NULL)
 431             *win = qpr->child;
 432         if (pt != NULL)
 433             *pt = (xcb_point_t) {qpr->root_x, qpr->root_y};
 434         free(qpr);
 435     }
 436     window_raise(motion_recorder);
 437 }
 438
 439 void window_focus(xcb_window_t win)
 440 {
 441     window_location_t loc;
 442     if (locate_window(win, &loc)) {
 443         if (loc.node == mon->desk->focus)
 444             return;
 445         select_monitor(loc.monitor);
 446         select_desktop(loc.desktop);
 447         focus_node(loc.monitor, loc.desktop, loc.node, true);
 448     }
 449 }
 450
 451 void window_border_width(xcb_window_t win, uint32_t bw)
 452 {
 453     uint32_t values[] = {bw};
 454     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_BORDER_WIDTH, values);
 455 }
 456
 457 void window_move(xcb_window_t win, int16_t x, int16_t y)
 458 {
 459     uint32_t values[] = {x, y};
 460     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y, values);
 461 }
 462
 463 void window_move_resize(xcb_window_t win, int16_t x, int16_t y, uint16_t w, uint16_t h)
 464 {
 465     uint32_t values[] = {x, y, w, h};
 466     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y_WIDTH_HEIGHT, values);
 467 }
 468
 469 void window_raise(xcb_window_t win)
 470 {
 471     uint32_t values[] = {XCB_STACK_MODE_ABOVE};
 472     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
 473 }
 474
 475 void window_pseudo_raise(desktop_t *d, xcb_window_t win)
 476 {
 477     for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n))
 478         if (is_tiled(n->client) && n->client->window != win)
 479             window_lower(n->client->window);
 480 }
 481
 482 void window_lower(xcb_window_t win)
 483 {
 484     uint32_t values[] = {XCB_STACK_MODE_BELOW};
 485     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
 486 }
 487
 488 void window_set_visibility(xcb_window_t win, bool visible) {
 489     uint32_t values_off[] = {ROOT_EVENT_MASK & ~XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY};
 490     uint32_t values_on[] = {ROOT_EVENT_MASK};
 491     xcb_change_window_attributes(dpy, root, XCB_CW_EVENT_MASK, values_off);
 492     if (visible)
 493         xcb_map_window(dpy, win);
 494     else
 495         xcb_unmap_window(dpy, win);
 496     xcb_change_window_attributes(dpy, root, XCB_CW_EVENT_MASK, values_on);
 497 }
 498
 499 void window_hide(xcb_window_t win)
 500 {
 501     window_set_visibility(win, false);
 502 }
 503
 504 void window_show(xcb_window_t win)
 505 {
 506     window_set_visibility(win, true);
 507 }
 508
 509 void toggle_visibility(void)
 510 {
 511     if (visible)
 512         clear_input_focus();
 513     visible = !visible;
 514     for (monitor_t *m = mon_head; m != NULL; m = m->next)
 515         for (node_t *n = first_extrema(m->desk->root); n != NULL; n = next_leaf(n))
 516             window_set_visibility(n->client->window, visible);
 517     if (visible)
 518         update_current();
 519 }
 520
 521 void enable_motion_recorder(void)
 522 {
 523     window_raise(motion_recorder);
 524     window_show(motion_recorder);
 525 }
 526
 527 void disable_motion_recorder(void)
 528 {
 529     window_hide(motion_recorder);
 530 }
 531
 532 void clear_input_focus(void)
 533 {
 534     xcb_set_input_focus(dpy, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
 535 }