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