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)
 190         return;
 191
 192     if (border_width < 1 || n->client->border_width < 1)
 193         return;
 194
 195     xcb_window_t win = n->client->window;
 196
 197     xcb_rectangle_t actual_rectangle = (is_tiled(n->client) ? n->client->tiled_rectangle : n->client->floating_rectangle);
 198
 199     uint16_t width = actual_rectangle.width;
 200     uint16_t height = actual_rectangle.height;
 201
 202     uint16_t full_width = width + 2 * border_width;
 203     uint16_t full_height = height + 2 * border_width;
 204
 205     xcb_rectangle_t inner_rectangles[] =
 206     {
 207         { width, 0, 2 * border_width, height + 2 * border_width },
 208         { 0, height, width + 2 * border_width, 2 * border_width }
 209     };
 210
 211     xcb_rectangle_t main_rectangles[] =
 212     {
 213         { width + inner_border_width, 0, 2 * (main_border_width + outer_border_width), height + 2 * border_width },
 214         { 0, height + inner_border_width, width + 2 * border_width, 2 * (main_border_width + outer_border_width) }
 215     };
 216
 217     xcb_rectangle_t outer_rectangles[] =
 218     {
 219         { width + inner_border_width + main_border_width, 0, 2 * outer_border_width, height + 2 * border_width },
 220         { 0, height + inner_border_width + main_border_width, width + 2 * border_width, 2 * outer_border_width }
 221     };
 222
 223     xcb_rectangle_t *presel_rectangles;
 224
 225     xcb_pixmap_t pix = xcb_generate_id(dpy);
 226     xcb_create_pixmap(dpy, root_depth, pix, win, full_width, full_height);
 227
 228     xcb_gcontext_t gc = xcb_generate_id(dpy);
 229     xcb_create_gc(dpy, gc, pix, 0, NULL);
 230
 231     uint32_t main_border_color_pxl = get_main_border_color(n->client, focused_window, focused_monitor);
 232
 233     /* inner border */
 234     if (inner_border_width > 0) {
 235         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &inner_border_color_pxl);
 236         xcb_poly_fill_rectangle(dpy, pix, gc, LENGTH(inner_rectangles), inner_rectangles);
 237     }
 238
 239     /* main border */
 240     if (main_border_width > 0) {
 241         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &main_border_color_pxl);
 242         xcb_poly_fill_rectangle(dpy, pix, gc, LENGTH(main_rectangles), main_rectangles);
 243     }
 244
 245     /* outer border */
 246     if (outer_border_width > 0) {
 247         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &outer_border_color_pxl);
 248         xcb_poly_fill_rectangle(dpy, pix, gc, LENGTH(outer_rectangles), outer_rectangles);
 249     }
 250
 251     if (split_mode == MODE_MANUAL && focused_monitor && focused_window) {
 252         uint16_t fence = (int16_t) (n->split_ratio * ((split_dir == DIR_UP || split_dir == DIR_DOWN) ? height : width));
 253         presel_rectangles = malloc(2 * sizeof(xcb_rectangle_t));
 254         switch (split_dir) {
 255             case DIR_UP:
 256                 presel_rectangles[0] = (xcb_rectangle_t) {width, 0, 2 * border_width, fence};
 257                 presel_rectangles[1] = (xcb_rectangle_t) {0, height + border_width, full_width, border_width};
 258                 break;
 259             case DIR_DOWN:
 260                 presel_rectangles[0] = (xcb_rectangle_t) {width, fence + 1, 2 * border_width, height + border_width - (fence + 1)};
 261                 presel_rectangles[1] = (xcb_rectangle_t) {0, height, full_width, border_width};
 262                 break;
 263             case DIR_LEFT:
 264                 presel_rectangles[0] = (xcb_rectangle_t) {0, height, fence, 2 * border_width};
 265                 presel_rectangles[1] = (xcb_rectangle_t) {width + border_width, 0, border_width, full_height};
 266                 break;
 267             case DIR_RIGHT:
 268                 presel_rectangles[0] = (xcb_rectangle_t) {fence + 1, height, width + border_width - (fence + 1), 2 * border_width};
 269                 presel_rectangles[1] = (xcb_rectangle_t) {width, 0, border_width, full_height};
 270                 break;
 271         }
 272         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &presel_border_color_pxl);
 273         xcb_poly_fill_rectangle(dpy, pix, gc, 2, presel_rectangles);
 274         free(presel_rectangles);
 275     }
 276
 277     /* apply border pixmap */
 278     xcb_change_window_attributes(dpy, win, XCB_CW_BORDER_PIXMAP, &pix);
 279
 280     xcb_free_gc(dpy, gc);
 281     xcb_free_pixmap(dpy, pix);
 282 }
 283
 284 void window_close(node_t *n)
 285 {
 286     if (n == NULL || n->client->locked)
 287         return;
 288
 289     PRINTF("close window %X\n", n->client->window);
 290
 291     xcb_atom_t WM_DELETE_WINDOW;
 292     xcb_window_t win = n->client->window;
 293     xcb_client_message_event_t e;
 294
 295     xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(dpy, xcb_intern_atom(dpy, 0, strlen("WM_DELETE_WINDOW"), "WM_DELETE_WINDOW"), NULL);
 296     if (reply) {
 297         WM_DELETE_WINDOW = reply->atom;
 298         free(reply);
 299     } else {
 300         warn("close_window %X: could not acquire WM_DELETE_WINDOW atom\n", win);
 301         return;
 302     }
 303
 304     e.response_type = XCB_CLIENT_MESSAGE;
 305     e.window = win;
 306     e.format = 32;
 307     e.sequence = 0;
 308     e.type = ewmh->WM_PROTOCOLS;
 309     e.data.data32[0] = WM_DELETE_WINDOW;
 310     e.data.data32[1] = XCB_CURRENT_TIME;
 311
 312     xcb_send_event(dpy, false, win, XCB_EVENT_MASK_NO_EVENT, (char *) &e);
 313 }
 314
 315 void window_kill(desktop_t *d, node_t *n)
 316 {
 317     if (n == NULL)
 318         return;
 319
 320     PRINTF("kill window %X\n", n->client->window);
 321
 322     xcb_kill_client(dpy, n->client->window);
 323     remove_node(d, n);
 324 }
 325
 326 void toggle_fullscreen(monitor_t *m, client_t *c)
 327 {
 328     PRINTF("toggle fullscreen %X\n", c->window);
 329
 330     if (c->fullscreen) {
 331         c->fullscreen = false;
 332         xcb_atom_t values[] = {XCB_NONE};
 333         xcb_ewmh_set_wm_state(ewmh, c->window, LENGTH(values), values);
 334         if (is_tiled(c))
 335             window_lower(c->window);
 336     } else {
 337         c->fullscreen = true;
 338         xcb_atom_t values[] = {ewmh->_NET_WM_STATE_FULLSCREEN};
 339         xcb_ewmh_set_wm_state(ewmh, c->window, LENGTH(values), values);
 340         window_raise(c->window);
 341         window_border_width(c->window, 0);
 342         xcb_rectangle_t r = m->rectangle;
 343         window_move_resize(c->window, r.x, r.y, r.width, r.height);
 344     }
 345     update_current();
 346 }
 347
 348 void toggle_floating(node_t *n)
 349 {
 350     if (n == NULL || n->client->transient)
 351         return;
 352
 353     PRINTF("toggle floating %X\n", n->client->window);
 354
 355     client_t *c = n->client;
 356     c->floating = !c->floating;
 357     n->vacant = !n->vacant;
 358     update_vacant_state(n->parent);
 359     if (c->floating)
 360         window_raise(c->window);
 361     else if (is_tiled(c))
 362         window_lower(c->window);
 363     if (c->floating)
 364         enable_shadow(c->window);
 365     else
 366         disable_shadow(c->window);
 367     update_current();
 368 }
 369
 370 void toggle_locked(client_t *c)
 371 {
 372     PRINTF("toggle locked %X\n", c->window);
 373
 374     c->locked = !c->locked;
 375 }
 376
 377 void set_shadow(xcb_window_t win, uint32_t value)
 378 {
 379     xcb_change_property(dpy, XCB_PROP_MODE_REPLACE, win, compton_shadow, XCB_ATOM_CARDINAL, 32, sizeof(value), &value);
 380 }
 381
 382 void enable_shadow(xcb_window_t win)
 383 {
 384     set_shadow(win, 1);
 385 }
 386
 387 void disable_shadow(xcb_window_t win)
 388 {
 389     set_shadow(win, 0);
 390 }
 391
 392 void list_windows(char *rsp)
 393 {
 394     char line[MAXLEN];
 395
 396     for (monitor_t *m = mon_head; m != NULL; m = m->next)
 397         for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
 398             for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n)) {
 399                 snprintf(line, sizeof(line), "0x%X\n", n->client->window);
 400                 strncat(rsp, line, REMLEN(rsp));
 401             }
 402 }
 403
 404 uint32_t get_main_border_color(client_t *c, bool focused_window, bool focused_monitor)
 405 {
 406     if (c == NULL)
 407         return 0;
 408
 409     if (focused_monitor && focused_window) {
 410         if (c->locked)
 411             return focused_locked_border_color_pxl;
 412         else
 413             return focused_border_color_pxl;
 414     } else if (focused_window) {
 415         if (c->urgent)
 416             return urgent_border_color_pxl;
 417         else if (c->locked)
 418             return active_locked_border_color_pxl;
 419         else
 420             return active_border_color_pxl;
 421     } else {
 422         if (c->urgent)
 423             return urgent_border_color_pxl;
 424         else if (c->locked)
 425             return normal_locked_border_color_pxl;
 426         else
 427             return normal_border_color_pxl;
 428     }
 429 }
 430
 431 void update_floating_rectangle(client_t *c)
 432 {
 433     xcb_get_geometry_reply_t *geom = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, c->window), NULL);
 434
 435     if (geom) {
 436         c->floating_rectangle = (xcb_rectangle_t) {geom->x, geom->y, geom->width, geom->height};
 437         free(geom);
 438     } else {
 439         c->floating_rectangle = (xcb_rectangle_t) {0, 0, 32, 24};
 440     }
 441 }
 442
 443
 444 void save_pointer_position(xcb_point_t *pos)
 445 {
 446     xcb_query_pointer_reply_t *qpr = xcb_query_pointer_reply(dpy, xcb_query_pointer(dpy, root), NULL);
 447     if (qpr != NULL) {
 448         *pos = (xcb_point_t) {qpr->root_x, qpr->root_y};
 449         free(qpr);
 450     }
 451 }
 452
 453 void window_focus(xcb_window_t win)
 454 {
 455     window_location_t loc;
 456     if (locate_window(win, &loc)) {
 457         if (loc.node == mon->desk->focus)
 458             return;
 459         select_monitor(loc.monitor);
 460         select_desktop(loc.desktop);
 461         focus_node(loc.monitor, loc.desktop, loc.node, true);
 462     }
 463 }
 464
 465 void window_border_width(xcb_window_t win, uint32_t bw)
 466 {
 467     uint32_t values[] = {bw};
 468     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_BORDER_WIDTH, values);
 469 }
 470
 471 void window_move(xcb_window_t win, int16_t x, int16_t y)
 472 {
 473     uint32_t values[] = {x, y};
 474     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y, values);
 475 }
 476
 477 void window_move_resize(xcb_window_t win, int16_t x, int16_t y, uint16_t w, uint16_t h)
 478 {
 479     uint32_t values[] = {x, y, w, h};
 480     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y_WIDTH_HEIGHT, values);
 481 }
 482
 483 void window_raise(xcb_window_t win)
 484 {
 485     uint32_t values[] = {XCB_STACK_MODE_ABOVE};
 486     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
 487 }
 488
 489 void window_pseudo_raise(desktop_t *d, xcb_window_t win)
 490 {
 491     for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n))
 492         if (is_tiled(n->client) && n->client->window != win)
 493             window_lower(n->client->window);
 494 }
 495
 496 void window_lower(xcb_window_t win)
 497 {
 498     uint32_t values[] = {XCB_STACK_MODE_BELOW};
 499     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
 500 }
 501
 502 void window_set_visibility(xcb_window_t win, bool visible) {
 503     uint32_t values_off[] = {ROOT_EVENT_MASK & ~XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY};
 504     uint32_t values_on[] = {ROOT_EVENT_MASK};
 505     xcb_change_window_attributes(dpy, root, XCB_CW_EVENT_MASK, values_off);
 506     if (visible)
 507         xcb_map_window(dpy, win);
 508     else
 509         xcb_unmap_window(dpy, win);
 510     xcb_change_window_attributes(dpy, root, XCB_CW_EVENT_MASK, values_on);
 511 }
 512
 513 void window_hide(xcb_window_t win)
 514 {
 515     window_set_visibility(win, false);
 516 }
 517
 518 void window_show(xcb_window_t win)
 519 {
 520     window_set_visibility(win, true);
 521 }
 522
 523 void toggle_visibility(void)
 524 {
 525     visible = !visible;
 526     for (monitor_t *m = mon_head; m != NULL; m = m->next)
 527         for (node_t *n = first_extrema(m->desk->root); n != NULL; n = next_leaf(n))
 528             window_set_visibility(n->client->window, visible);
 529     if (visible)
 530         update_current();
 531 }