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, transient = false, fullscreen = false, takes_focus = true, manage = true;
 100
 101     handle_rules(win, &m, &d, &floating, &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     num_clients++;
 166     ewmh_set_wm_desktop(birth, d);
 167     ewmh_update_client_list();
 168 }
 169
 170 void adopt_orphans(void)
 171 {
 172     xcb_query_tree_reply_t *qtr = xcb_query_tree_reply(dpy, xcb_query_tree(dpy, root), NULL);
 173     if (qtr == NULL)
 174         return;
 175     int len = xcb_query_tree_children_length(qtr);
 176     xcb_window_t *wins = xcb_query_tree_children(qtr);
 177     for (int i = 0; i < len; i++) {
 178         uint32_t idx;
 179         xcb_window_t win = wins[i];
 180         window_hide(win);
 181         if (xcb_ewmh_get_wm_desktop_reply(ewmh, xcb_ewmh_get_wm_desktop(ewmh, win), &idx, NULL) == 1) {
 182             desktop_location_t loc;
 183             if (ewmh_locate_desktop(idx, &loc))
 184                 manage_window(loc.monitor, loc.desktop, win);
 185             else
 186                 manage_window(mon, mon->desk, win);
 187         }
 188     }
 189     free(qtr);
 190 }
 191
 192 void window_draw_border(node_t *n, bool focused_window, bool focused_monitor)
 193 {
 194     if (n == NULL || border_width < 1 || n->client->border_width < 1)
 195         return;
 196
 197     xcb_window_t win = n->client->window;
 198     uint32_t border_color_pxl = get_border_color(n->client, focused_window, focused_monitor);
 199
 200     if (split_mode == MODE_AUTOMATIC || !focused_monitor || !focused_window) {
 201         xcb_change_window_attributes(dpy, win, XCB_CW_BORDER_PIXEL, &border_color_pxl);
 202     } else {
 203         xcb_rectangle_t actual_rectangle = (is_tiled(n->client) ? n->client->tiled_rectangle : n->client->floating_rectangle);
 204
 205         uint16_t width = actual_rectangle.width;
 206         uint16_t height = actual_rectangle.height;
 207
 208         uint16_t full_width = width + 2 * border_width;
 209         uint16_t full_height = height + 2 * border_width;
 210
 211         xcb_rectangle_t border_rectangles[] =
 212         {
 213             { width, 0, 2 * border_width, height + 2 * border_width },
 214             { 0, height, width + 2 * border_width, 2 * border_width }
 215         };
 216
 217         xcb_rectangle_t *presel_rectangles;
 218
 219         xcb_pixmap_t pix = xcb_generate_id(dpy);
 220         xcb_create_pixmap(dpy, root_depth, pix, win, full_width, full_height);
 221
 222         xcb_gcontext_t gc = xcb_generate_id(dpy);
 223         xcb_create_gc(dpy, gc, pix, 0, NULL);
 224
 225         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &border_color_pxl);
 226         xcb_poly_fill_rectangle(dpy, pix, gc, LENGTH(border_rectangles), border_rectangles);
 227
 228         uint16_t fence = (int16_t) (n->split_ratio * ((split_dir == DIR_UP || split_dir == DIR_DOWN) ? height : width));
 229         presel_rectangles = malloc(2 * sizeof(xcb_rectangle_t));
 230         switch (split_dir) {
 231             case DIR_UP:
 232                 presel_rectangles[0] = (xcb_rectangle_t) {width, 0, 2 * border_width, fence};
 233                 presel_rectangles[1] = (xcb_rectangle_t) {0, height + border_width, full_width, border_width};
 234                 break;
 235             case DIR_DOWN:
 236                 presel_rectangles[0] = (xcb_rectangle_t) {width, fence + 1, 2 * border_width, height + border_width - (fence + 1)};
 237                 presel_rectangles[1] = (xcb_rectangle_t) {0, height, full_width, border_width};
 238                 break;
 239             case DIR_LEFT:
 240                 presel_rectangles[0] = (xcb_rectangle_t) {0, height, fence, 2 * border_width};
 241                 presel_rectangles[1] = (xcb_rectangle_t) {width + border_width, 0, border_width, full_height};
 242                 break;
 243             case DIR_RIGHT:
 244                 presel_rectangles[0] = (xcb_rectangle_t) {fence + 1, height, width + border_width - (fence + 1), 2 * border_width};
 245                 presel_rectangles[1] = (xcb_rectangle_t) {width, 0, border_width, full_height};
 246                 break;
 247         }
 248
 249         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &presel_border_color_pxl);
 250         xcb_poly_fill_rectangle(dpy, pix, gc, 2, presel_rectangles);
 251         xcb_change_window_attributes(dpy, win, XCB_CW_BORDER_PIXMAP, &pix);
 252         free(presel_rectangles);
 253         xcb_free_gc(dpy, gc);
 254         xcb_free_pixmap(dpy, pix);
 255     }
 256 }
 257
 258 void window_close(node_t *n)
 259 {
 260     if (n == NULL || n->client->locked)
 261         return;
 262
 263     PRINTF("close window %X\n", n->client->window);
 264
 265     xcb_atom_t WM_DELETE_WINDOW;
 266     xcb_window_t win = n->client->window;
 267     xcb_client_message_event_t e;
 268
 269     xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(dpy, xcb_intern_atom(dpy, 0, strlen("WM_DELETE_WINDOW"), "WM_DELETE_WINDOW"), NULL);
 270     if (reply) {
 271         WM_DELETE_WINDOW = reply->atom;
 272         free(reply);
 273     } else {
 274         warn("close_window %X: could not acquire WM_DELETE_WINDOW atom\n", win);
 275         return;
 276     }
 277
 278     e.response_type = XCB_CLIENT_MESSAGE;
 279     e.window = win;
 280     e.format = 32;
 281     e.sequence = 0;
 282     e.type = ewmh->WM_PROTOCOLS;
 283     e.data.data32[0] = WM_DELETE_WINDOW;
 284     e.data.data32[1] = XCB_CURRENT_TIME;
 285
 286     xcb_send_event(dpy, false, win, XCB_EVENT_MASK_NO_EVENT, (char *) &e);
 287 }
 288
 289 void window_kill(desktop_t *d, node_t *n)
 290 {
 291     if (n == NULL)
 292         return;
 293
 294     PRINTF("kill window %X\n", n->client->window);
 295
 296     xcb_kill_client(dpy, n->client->window);
 297     remove_node(d, n);
 298 }
 299
 300 void toggle_fullscreen(monitor_t *m, client_t *c)
 301 {
 302     PRINTF("toggle fullscreen %X\n", c->window);
 303
 304     if (c->fullscreen) {
 305         c->fullscreen = false;
 306         xcb_atom_t values[] = {XCB_NONE};
 307         xcb_ewmh_set_wm_state(ewmh, c->window, LENGTH(values), values);
 308         if (is_tiled(c))
 309             window_lower(c->window);
 310     } else {
 311         c->fullscreen = true;
 312         xcb_atom_t values[] = {ewmh->_NET_WM_STATE_FULLSCREEN};
 313         xcb_ewmh_set_wm_state(ewmh, c->window, LENGTH(values), values);
 314         window_raise(c->window);
 315         window_border_width(c->window, 0);
 316         xcb_rectangle_t r = m->rectangle;
 317         window_move_resize(c->window, r.x, r.y, r.width, r.height);
 318     }
 319     update_current();
 320 }
 321
 322 void toggle_floating(node_t *n)
 323 {
 324     if (n == NULL || n->client->transient || n->client->fullscreen)
 325         return;
 326
 327     PRINTF("toggle floating %X\n", n->client->window);
 328
 329     client_t *c = n->client;
 330     c->floating = !c->floating;
 331     n->vacant = !n->vacant;
 332     update_vacant_state(n->parent);
 333     if (c->floating)
 334         window_raise(c->window);
 335     else if (is_tiled(c))
 336         window_lower(c->window);
 337     if (c->floating)
 338         enable_shadow(c->window);
 339     else
 340         disable_shadow(c->window);
 341     update_current();
 342 }
 343
 344 void toggle_locked(client_t *c)
 345 {
 346     PRINTF("toggle locked %X\n", c->window);
 347
 348     c->locked = !c->locked;
 349 }
 350
 351 void set_shadow(xcb_window_t win, uint32_t value)
 352 {
 353     if (!apply_shadow_property)
 354         return;
 355     xcb_change_property(dpy, XCB_PROP_MODE_REPLACE, win, compton_shadow, XCB_ATOM_CARDINAL, 32, sizeof(value), &value);
 356 }
 357
 358 void enable_shadow(xcb_window_t win)
 359 {
 360     set_shadow(win, 1);
 361 }
 362
 363 void disable_shadow(xcb_window_t win)
 364 {
 365     set_shadow(win, 0);
 366 }
 367
 368 void list_windows(char *rsp)
 369 {
 370     char line[MAXLEN];
 371
 372     for (monitor_t *m = mon_head; m != NULL; m = m->next)
 373         for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
 374             for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n)) {
 375                 snprintf(line, sizeof(line), "0x%X\n", n->client->window);
 376                 strncat(rsp, line, REMLEN(rsp));
 377             }
 378 }
 379
 380 uint32_t get_border_color(client_t *c, bool focused_window, bool focused_monitor)
 381 {
 382     if (c == NULL)
 383         return 0;
 384
 385     if (focused_monitor && focused_window) {
 386         if (c->locked)
 387             return focused_locked_border_color_pxl;
 388         else
 389             return focused_border_color_pxl;
 390     } else if (focused_window) {
 391         if (c->urgent)
 392             return urgent_border_color_pxl;
 393         else if (c->locked)
 394             return active_locked_border_color_pxl;
 395         else
 396             return active_border_color_pxl;
 397     } else {
 398         if (c->urgent)
 399             return urgent_border_color_pxl;
 400         else if (c->locked)
 401             return normal_locked_border_color_pxl;
 402         else
 403             return normal_border_color_pxl;
 404     }
 405 }
 406
 407 void update_floating_rectangle(client_t *c)
 408 {
 409     xcb_get_geometry_reply_t *geom = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, c->window), NULL);
 410
 411     if (geom) {
 412         c->floating_rectangle = (xcb_rectangle_t) {geom->x, geom->y, geom->width, geom->height};
 413         free(geom);
 414     } else {
 415         c->floating_rectangle = (xcb_rectangle_t) {0, 0, 32, 24};
 416     }
 417 }
 418
 419
 420 void query_pointer(xcb_window_t *win, xcb_point_t *pt)
 421 {
 422     window_lower(motion_recorder);
 423     xcb_query_pointer_reply_t *qpr = xcb_query_pointer_reply(dpy, xcb_query_pointer(dpy, root), NULL);
 424     if (qpr != NULL) {
 425         if (win != NULL)
 426             *win = qpr->child;
 427         if (pt != NULL)
 428             *pt = (xcb_point_t) {qpr->root_x, qpr->root_y};
 429         free(qpr);
 430     }
 431     window_raise(motion_recorder);
 432 }
 433
 434 void window_focus(xcb_window_t win)
 435 {
 436     window_location_t loc;
 437     if (locate_window(win, &loc)) {
 438         if (loc.node == mon->desk->focus)
 439             return;
 440         select_monitor(loc.monitor);
 441         select_desktop(loc.desktop);
 442         focus_node(loc.monitor, loc.desktop, loc.node, true);
 443     }
 444 }
 445
 446 void window_border_width(xcb_window_t win, uint32_t bw)
 447 {
 448     uint32_t values[] = {bw};
 449     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_BORDER_WIDTH, values);
 450 }
 451
 452 void window_move(xcb_window_t win, int16_t x, int16_t y)
 453 {
 454     uint32_t values[] = {x, y};
 455     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y, values);
 456 }
 457
 458 void window_move_resize(xcb_window_t win, int16_t x, int16_t y, uint16_t w, uint16_t h)
 459 {
 460     uint32_t values[] = {x, y, w, h};
 461     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y_WIDTH_HEIGHT, values);
 462 }
 463
 464 void window_raise(xcb_window_t win)
 465 {
 466     uint32_t values[] = {XCB_STACK_MODE_ABOVE};
 467     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
 468 }
 469
 470 void window_pseudo_raise(desktop_t *d, xcb_window_t win)
 471 {
 472     for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n))
 473         if (is_tiled(n->client) && n->client->window != win)
 474             window_lower(n->client->window);
 475 }
 476
 477 void window_lower(xcb_window_t win)
 478 {
 479     uint32_t values[] = {XCB_STACK_MODE_BELOW};
 480     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
 481 }
 482
 483 void window_set_visibility(xcb_window_t win, bool visible) {
 484     uint32_t values_off[] = {ROOT_EVENT_MASK & ~XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY};
 485     uint32_t values_on[] = {ROOT_EVENT_MASK};
 486     xcb_change_window_attributes(dpy, root, XCB_CW_EVENT_MASK, values_off);
 487     if (visible)
 488         xcb_map_window(dpy, win);
 489     else
 490         xcb_unmap_window(dpy, win);
 491     xcb_change_window_attributes(dpy, root, XCB_CW_EVENT_MASK, values_on);
 492 }
 493
 494 void window_hide(xcb_window_t win)
 495 {
 496     window_set_visibility(win, false);
 497 }
 498
 499 void window_show(xcb_window_t win)
 500 {
 501     window_set_visibility(win, true);
 502 }
 503
 504 void toggle_visibility(void)
 505 {
 506     visible = !visible;
 507     for (monitor_t *m = mon_head; m != NULL; m = m->next)
 508         for (node_t *n = first_extrema(m->desk->root); n != NULL; n = next_leaf(n))
 509             window_set_visibility(n->client->window, visible);
 510     if (visible)
 511         update_current();
 512 }
 513
 514 void enable_motion_recorder(void)
 515 {
 516     window_raise(motion_recorder);
 517     window_show(motion_recorder);
 518 }
 519
 520 void disable_motion_recorder(void)
 521 {
 522     window_hide(motion_recorder);
 523 }