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 bool locate_window(xcb_window_t win, window_location_t *loc)
  17 {
  18     for (monitor_t *m = mon_head; m != NULL; m = m->next)
  19         for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
  20             for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n))
  21                 if (n->client->window == win) {
  22                     loc->monitor = m;
  23                     loc->desktop = d;
  24                     loc->node = n;
  25                     return true;
  26                 }
  27     return false;
  28 }
  29
  30 bool locate_desktop(char *name, desktop_location_t *loc)
  31 {
  32     for (monitor_t *m = mon_head; m != NULL; m = m->next)
  33         for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
  34             if (strcmp(d->name, name) == 0) {
  35                 loc->monitor = m;
  36                 loc->desktop = d;
  37                 return true;
  38             }
  39     return false;
  40 }
  41
  42 bool is_inside(monitor_t *m, xcb_point_t p)
  43 {
  44     xcb_rectangle_t r = m->rectangle;
  45     return (r.x <= p.x && p.x < (r.x + r.width)
  46             && r.y <= p.y && p.y < (r.y + r.height));
  47 }
  48
  49 monitor_t *underlying_monitor(client_t *c)
  50 {
  51     xcb_point_t p = (xcb_point_t) {c->floating_rectangle.x, c->floating_rectangle.y};
  52     for (monitor_t *m = mon_head; m != NULL; m = m->next)
  53         if (is_inside(m, p))
  54             return m;
  55     return NULL;
  56 }
  57
  58 void manage_window(monitor_t *m, desktop_t *d, xcb_window_t win)
  59 {
  60     window_location_t loc;
  61     xcb_get_window_attributes_reply_t *wa = xcb_get_window_attributes_reply(dpy, xcb_get_window_attributes(dpy, win), NULL);
  62     uint8_t override_redirect = 0;
  63
  64     if (wa != NULL) {
  65         override_redirect = wa->override_redirect;
  66         free(wa);
  67     }
  68
  69     if (override_redirect || locate_window(win, &loc))
  70         return;
  71
  72     bool floating = false, transient = false, fullscreen = false, takes_focus = true, manage = true;
  73
  74     handle_rules(win, &floating, &transient, &fullscreen, &takes_focus, &manage);
  75
  76     if (!manage) {
  77         window_show(win);
  78         return;
  79     }
  80
  81     client_t *c = make_client(win);
  82     update_floating_rectangle(c);
  83
  84     xcb_icccm_get_wm_class_reply_t reply;
  85     if (xcb_icccm_get_wm_class_reply(dpy, xcb_icccm_get_wm_class(dpy, win), &reply, NULL) == 1) {
  86         strncpy(c->class_name, reply.class_name, sizeof(c->class_name));
  87         xcb_icccm_get_wm_class_reply_wipe(&reply);
  88     }
  89
  90     if (c->transient)
  91         floating = true;
  92
  93     node_t *birth = make_node();
  94     birth->client = c;
  95
  96     if (floating)
  97         split_mode = MODE_MANUAL;
  98
  99     insert_node(m, d, birth);
 100
 101     if (floating)
 102         toggle_floating(birth);
 103
 104     if (d->focus != NULL && d->focus->client->fullscreen)
 105         toggle_fullscreen(m, d->focus->client);
 106
 107     if (fullscreen)
 108         toggle_fullscreen(m, birth->client);
 109
 110     if (is_tiled(c))
 111         window_lower(c->window);
 112
 113     c->transient = transient;
 114
 115     if (takes_focus)
 116         focus_node(m, d, birth, false);
 117
 118     fit_monitor(m, birth->client);
 119     arrange(m, d);
 120     if (d == m->desk)
 121         window_show(c->window);
 122
 123     if (takes_focus)
 124         xcb_set_input_focus(dpy, XCB_INPUT_FOCUS_POINTER_ROOT, win, XCB_CURRENT_TIME);
 125
 126     uint32_t values[] = {CLIENT_EVENT_MASK};
 127     xcb_change_window_attributes(dpy, c->window, XCB_CW_EVENT_MASK, values);
 128
 129     num_clients++;
 130     ewmh_set_wm_desktop(birth, d);
 131     ewmh_update_client_list();
 132 }
 133
 134 void adopt_orphans(void)
 135 {
 136     xcb_query_tree_reply_t *qtr = xcb_query_tree_reply(dpy, xcb_query_tree(dpy, screen->root), NULL);
 137     if (qtr == NULL)
 138         return;
 139     int len = xcb_query_tree_children_length(qtr);
 140     xcb_window_t *wins = xcb_query_tree_children(qtr);
 141     for (int i = 0; i < len; i++) {
 142         uint32_t idx;
 143         xcb_window_t win = wins[i];
 144         if (xcb_ewmh_get_wm_desktop_reply(ewmh, xcb_ewmh_get_wm_desktop(ewmh, win), &idx, NULL) == 1) {
 145             desktop_location_t loc;
 146             if (ewmh_locate_desktop(idx, &loc))
 147                 manage_window(loc.monitor, loc.desktop, win);
 148             else
 149                 manage_window(mon, mon->desk, win);
 150         }
 151     }
 152     free(qtr);
 153 }
 154
 155 void window_draw_border(node_t *n, bool focused_window, bool focused_monitor)
 156 {
 157     if (n == NULL)
 158         return;
 159
 160     if (border_width < 1 || n->client->border_width < 1)
 161         return;
 162
 163     xcb_window_t win = n->client->window;
 164
 165     xcb_rectangle_t actual_rectangle = (is_tiled(n->client) ? n->client->tiled_rectangle : n->client->floating_rectangle);
 166
 167     uint16_t width = actual_rectangle.width;
 168     uint16_t height = actual_rectangle.height;
 169
 170     uint16_t full_width = width + 2 * border_width;
 171     uint16_t full_height = height + 2 * border_width;
 172
 173     xcb_rectangle_t inner_rectangles[] =
 174     {
 175         { width, 0, 2 * border_width, height + 2 * border_width },
 176         { 0, height, width + 2 * border_width, 2 * border_width }
 177     };
 178
 179     xcb_rectangle_t main_rectangles[] =
 180     {
 181         { width + inner_border_width, 0, 2 * (main_border_width + outer_border_width), height + 2 * border_width },
 182         { 0, height + inner_border_width, width + 2 * border_width, 2 * (main_border_width + outer_border_width) }
 183     };
 184
 185     xcb_rectangle_t outer_rectangles[] =
 186     {
 187         { width + inner_border_width + main_border_width, 0, 2 * outer_border_width, height + 2 * border_width },
 188         { 0, height + inner_border_width + main_border_width, width + 2 * border_width, 2 * outer_border_width }
 189     };
 190
 191     xcb_rectangle_t *presel_rectangles;
 192
 193     xcb_pixmap_t pix = xcb_generate_id(dpy);
 194     xcb_create_pixmap(dpy, root_depth, pix, win, full_width, full_height);
 195
 196     xcb_gcontext_t gc = xcb_generate_id(dpy);
 197     xcb_create_gc(dpy, gc, pix, 0, NULL);
 198
 199     uint32_t main_border_color_pxl = get_main_border_color(n->client, focused_window, focused_monitor);
 200
 201     /* inner border */
 202     if (inner_border_width > 0) {
 203         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &inner_border_color_pxl);
 204         xcb_poly_fill_rectangle(dpy, pix, gc, LENGTH(inner_rectangles), inner_rectangles);
 205     }
 206
 207     /* main border */
 208     if (main_border_width > 0) {
 209         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &main_border_color_pxl);
 210         xcb_poly_fill_rectangle(dpy, pix, gc, LENGTH(main_rectangles), main_rectangles);
 211     }
 212
 213     /* outer border */
 214     if (outer_border_width > 0) {
 215         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &outer_border_color_pxl);
 216         xcb_poly_fill_rectangle(dpy, pix, gc, LENGTH(outer_rectangles), outer_rectangles);
 217     }
 218
 219     if (split_mode == MODE_MANUAL && focused_monitor && focused_window) {
 220         uint16_t fence = (int16_t) (n->split_ratio * ((split_dir == DIR_UP || split_dir == DIR_DOWN) ? height : width));
 221         presel_rectangles = malloc(2 * sizeof(xcb_rectangle_t));
 222         switch (split_dir) {
 223             case DIR_UP:
 224                 presel_rectangles[0] = (xcb_rectangle_t) {width, 0, 2 * border_width, fence};
 225                 presel_rectangles[1] = (xcb_rectangle_t) {0, height + border_width, full_width, border_width};
 226                 break;
 227             case DIR_DOWN:
 228                 presel_rectangles[0] = (xcb_rectangle_t) {width, fence + 1, 2 * border_width, height + border_width - (fence + 1)};
 229                 presel_rectangles[1] = (xcb_rectangle_t) {0, height, full_width, border_width};
 230                 break;
 231             case DIR_LEFT:
 232                 presel_rectangles[0] = (xcb_rectangle_t) {0, height, fence, 2 * border_width};
 233                 presel_rectangles[1] = (xcb_rectangle_t) {width + border_width, 0, border_width, full_height};
 234                 break;
 235             case DIR_RIGHT:
 236                 presel_rectangles[0] = (xcb_rectangle_t) {fence + 1, height, width + border_width - (fence + 1), 2 * border_width};
 237                 presel_rectangles[1] = (xcb_rectangle_t) {width, 0, border_width, full_height};
 238                 break;
 239         }
 240         xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &presel_border_color_pxl);
 241         xcb_poly_fill_rectangle(dpy, pix, gc, 2, presel_rectangles);
 242         free(presel_rectangles);
 243     }
 244
 245     /* apply border pixmap */
 246     xcb_change_window_attributes(dpy, win, XCB_CW_BORDER_PIXMAP, &pix);
 247
 248     xcb_free_gc(dpy, gc);
 249     xcb_free_pixmap(dpy, pix);
 250 }
 251
 252 void window_close(node_t *n)
 253 {
 254     if (n == NULL || n->client->locked)
 255         return;
 256
 257     PRINTF("close window %X\n", n->client->window);
 258
 259     xcb_atom_t WM_DELETE_WINDOW;
 260     xcb_window_t win = n->client->window;
 261     xcb_client_message_event_t e;
 262
 263     xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(dpy, xcb_intern_atom(dpy, 0, strlen("WM_DELETE_WINDOW"), "WM_DELETE_WINDOW"), NULL);
 264     if (reply) {
 265         WM_DELETE_WINDOW = reply->atom;
 266         free(reply);
 267     } else {
 268         warn("close_window %X: could not acquire WM_DELETE_WINDOW atom\n", win);
 269         return;
 270     }
 271
 272     e.response_type = XCB_CLIENT_MESSAGE;
 273     e.window = win;
 274     e.format = 32;
 275     e.sequence = 0;
 276     e.type = ewmh->WM_PROTOCOLS;
 277     e.data.data32[0] = WM_DELETE_WINDOW;
 278     e.data.data32[1] = XCB_CURRENT_TIME;
 279
 280     xcb_send_event(dpy, false, win, XCB_EVENT_MASK_NO_EVENT, (char *) &e);
 281 }
 282
 283 void window_kill(desktop_t *d, node_t *n)
 284 {
 285     if (n == NULL)
 286         return;
 287
 288     PRINTF("kill window %X\n", n->client->window);
 289
 290     xcb_kill_client(dpy, n->client->window);
 291     remove_node(d, n);
 292 }
 293
 294 void toggle_fullscreen(monitor_t *m, client_t *c)
 295 {
 296     PRINTF("toggle fullscreen %X\n", c->window);
 297
 298     if (c->fullscreen) {
 299         c->fullscreen = false;
 300         xcb_atom_t values[] = {XCB_NONE};
 301         xcb_ewmh_set_wm_state(ewmh, c->window, LENGTH(values), values);
 302         if (is_tiled(c))
 303             window_lower(c->window);
 304     } else {
 305         c->fullscreen = true;
 306         xcb_atom_t values[] = {ewmh->_NET_WM_STATE_FULLSCREEN};
 307         xcb_ewmh_set_wm_state(ewmh, c->window, LENGTH(values), values);
 308         window_raise(c->window);
 309         window_border_width(c->window, 0);
 310         xcb_rectangle_t r = m->rectangle;
 311         window_move_resize(c->window, r.x, r.y, r.width, r.height);
 312     }
 313     update_current();
 314 }
 315
 316 void toggle_floating(node_t *n)
 317 {
 318     if (n == NULL || n->client->transient)
 319         return;
 320
 321     PRINTF("toggle floating %X\n", n->client->window);
 322
 323     client_t *c = n->client;
 324     c->floating = !c->floating;
 325     n->vacant = !n->vacant;
 326     update_vacant_state(n->parent);
 327     if (c->floating)
 328         window_raise(c->window);
 329     else if (is_tiled(c))
 330         window_lower(c->window);
 331     update_current();
 332 }
 333
 334 void toggle_locked(client_t *c)
 335 {
 336     PRINTF("toggle locked %X\n", c->window);
 337
 338     c->locked = !c->locked;
 339 }
 340
 341 void list_windows(char *rsp)
 342 {
 343     char line[MAXLEN];
 344
 345     for (monitor_t *m = mon_head; m != NULL; m = m->next)
 346         for (desktop_t *d = m->desk_head; d != NULL; d = d->next)
 347             for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n)) {
 348                 snprintf(line, sizeof(line), "0x%X\n", n->client->window);
 349                 strncat(rsp, line, REMLEN(rsp));
 350             }
 351 }
 352
 353 uint32_t get_main_border_color(client_t *c, bool focused_window, bool focused_monitor)
 354 {
 355     if (c == NULL)
 356         return 0;
 357
 358     if (focused_monitor && focused_window) {
 359         if (c->locked)
 360             return focused_locked_border_color_pxl;
 361         else
 362             return focused_border_color_pxl;
 363     } else if (focused_window) {
 364         if (c->locked)
 365             return active_locked_border_color_pxl;
 366         else
 367             return active_border_color_pxl;
 368     } else {
 369         if (c->urgent)
 370             return urgent_border_color_pxl;
 371         else if (c->locked)
 372             return normal_locked_border_color_pxl;
 373         else
 374             return normal_border_color_pxl;
 375     }
 376 }
 377
 378 void update_floating_rectangle(client_t *c)
 379 {
 380     xcb_get_geometry_reply_t *geom = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, c->window), NULL);
 381
 382     if (geom) {
 383         c->floating_rectangle = (xcb_rectangle_t) {geom->x, geom->y, geom->width, geom->height};
 384         free(geom);
 385     } else {
 386         c->floating_rectangle = (xcb_rectangle_t) {0, 0, 32, 24};
 387     }
 388 }
 389
 390 void window_border_width(xcb_window_t win, uint32_t bw)
 391 {
 392     uint32_t values[] = {bw};
 393     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_BORDER_WIDTH, values);
 394 }
 395
 396 void window_move(xcb_window_t win, int16_t x, int16_t y)
 397 {
 398     uint32_t values[] = {x, y};
 399     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y, values);
 400 }
 401
 402 void window_move_resize(xcb_window_t win, int16_t x, int16_t y, uint16_t w, uint16_t h)
 403 {
 404     uint32_t values[] = {x, y, w, h};
 405     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y_WIDTH_HEIGHT, values);
 406 }
 407
 408 void window_raise(xcb_window_t win)
 409 {
 410     uint32_t values[] = {XCB_STACK_MODE_ABOVE};
 411     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
 412 }
 413
 414 void window_pseudo_raise(desktop_t *d, xcb_window_t win)
 415 {
 416     for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n))
 417         if (is_tiled(n->client) && n->client->window != win)
 418             window_lower(n->client->window);
 419 }
 420
 421 void window_lower(xcb_window_t win)
 422 {
 423     uint32_t values[] = {XCB_STACK_MODE_BELOW};
 424     xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
 425 }
 426
 427 void window_set_visibility(xcb_window_t win, bool visible) {
 428     uint32_t values_off[] = {ROOT_EVENT_MASK & ~XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY};
 429     uint32_t values_on[] = {ROOT_EVENT_MASK};
 430     xcb_change_window_attributes(dpy, screen->root, XCB_CW_EVENT_MASK, values_off);
 431     if (visible)
 432         xcb_map_window(dpy, win);
 433     else
 434         xcb_unmap_window(dpy, win);
 435     xcb_change_window_attributes(dpy, screen->root, XCB_CW_EVENT_MASK, values_on);
 436 }
 437
 438 void window_hide(xcb_window_t win)
 439 {
 440     window_set_visibility(win, false);
 441 }
 442
 443 void window_show(xcb_window_t win)
 444 {
 445     window_set_visibility(win, true);
 446 }