Pileus Git - wmpus/blob - sys-xcb.c

   1 /*
   2  * Copyright (c) 2015 Andy Spencer <andy753421@gmail.com>
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  */
  15
  16 #define _GNU_SOURCE
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <search.h>
  20 #include <string.h>
  21
  22 #include <xcb/xcb.h>
  23 #include <xcb/xcb_event.h>
  24 #include <xcb/xcb_keysyms.h>
  25 #include <xcb/xcb_icccm.h>
  26 #include <xcb/xcb_ewmh.h>
  27 #include <xcb/xinerama.h>
  28
  29 #include "util.h"
  30 #include "conf.h"
  31 #include "types.h"
  32 #include "sys.h"
  33 #include "wm.h"
  34
  35 /* Configuration */
  36 static int border     = 2;
  37 static int stack      = 25;
  38 static int no_capture = 0;
  39
  40 /* Internal structures */
  41 typedef struct {
  42         int left;
  43         int right;
  44         int top;
  45         int bottom;
  46 } strut_t;
  47
  48 struct win_sys {
  49         xcb_window_t     xcb;    // xcb window id
  50         xcb_event_mask_t events; // currently watch events
  51         strut_t          strut;  // toolbar struts
  52         int managed;             // window is managed by wm
  53 };
  54
  55 typedef enum {
  56         CLR_FOCUS,
  57         CLR_UNFOCUS,
  58         CLR_URGENT,
  59         NCOLORS
  60 } color_t;
  61
  62 /* Global data */
  63 static xcb_connection_t      *conn;
  64 static xcb_ewmh_connection_t  ewmh;
  65 static xcb_key_symbols_t     *keysyms;
  66 static xcb_colormap_t         colormap;
  67 static xcb_window_t           root;
  68 static xcb_event_mask_t       events;
  69 static list_t                *screens;
  70 static void                  *cache;
  71 static xcb_pixmap_t           colors[NCOLORS];
  72 static unsigned int           grabbed;
  73 static xcb_atom_t             wm_protos;
  74 static xcb_atom_t             wm_delete;
  75
  76 /************************
  77  * Conversion functions *
  78  ************************/
  79
  80 /* State names */
  81 static char *state_map[] = {
  82         [ST_HIDE ] "hide ",
  83         [ST_SHOW ] "show ",
  84         [ST_FULL ] "full ",
  85         [ST_MAX  ] "max  ",
  86         [ST_SHADE] "shade",
  87         [ST_ICON ] "icon ",
  88         [ST_CLOSE] "close",
  89 };
  90
  91 /* Key presses */
  92 static struct {
  93         event_t      ev;
  94         xcb_keysym_t sym;
  95 } keysym_map[] = {
  96         { EV_LEFT,     0xFF51 },
  97         { EV_RIGHT,    0xFF53 },
  98         { EV_UP,       0xFF52 },
  99         { EV_DOWN,     0xFF54 },
 100         { EV_HOME,     0xFF50 },
 101         { EV_END,      0xFF57 },
 102         { EV_PAGEUP,   0xFF55 },
 103         { EV_PAGEDOWN, 0xFF56 },
 104         { EV_F1,       0xFFBE },
 105         { EV_F2,       0xFFBF },
 106         { EV_F3,       0xFFC0 },
 107         { EV_F4,       0xFFC1 },
 108         { EV_F5,       0xFFC2 },
 109         { EV_F6,       0xFFC3 },
 110         { EV_F7,       0xFFC4 },
 111         { EV_F8,       0xFFC5 },
 112         { EV_F9,       0xFFC6 },
 113         { EV_F10,      0xFFC7 },
 114         { EV_F11,      0xFFC8 },
 115         { EV_F12,      0xFFC9 },
 116 };
 117
 118 /************************
 119  * Conversion functions *
 120  ************************/
 121
 122 static xcb_keycode_t *event_to_keycodes(event_t ev)
 123 {
 124         xcb_keycode_t *codes = NULL;
 125
 126         /* Get keysym */
 127         xcb_keysym_t keysym = map_get(keysym_map, ev, ev, sym, ev);
 128
 129         /* Get keycodes */
 130         if (!(codes = xcb_key_symbols_get_keycode(keysyms, keysym)))
 131                 warn("no keycode found for %d->%d", ev, keysym);
 132
 133         return codes;
 134 }
 135
 136 static event_t keycode_to_event(xcb_keycode_t code)
 137 {
 138         /* Get keysym */
 139         xcb_keysym_t keysym = xcb_key_symbols_get_keysym(keysyms, code, 0);
 140
 141         /* Get event */
 142         return map_get(keysym_map, sym,keysym, ev,keysym);
 143 }
 144
 145 /* Button presses */
 146 static event_t button_to_event(xcb_button_t btn)
 147 {
 148         return EV_MOUSE0 + btn;
 149 }
 150
 151 static xcb_button_t event_to_button(event_t ev)
 152 {
 153         return ev - EV_MOUSE0;
 154 }
 155
 156 /* Modifier masks */
 157 static xcb_mod_mask_t mod_to_mask(mod_t mod)
 158 {
 159         xcb_mod_mask_t mask = 0;
 160         if (mod.alt)   mask |= XCB_MOD_MASK_1;
 161         if (mod.ctrl)  mask |= XCB_MOD_MASK_CONTROL;
 162         if (mod.shift) mask |= XCB_MOD_MASK_SHIFT;
 163         if (mod.win)   mask |= XCB_MOD_MASK_4;
 164         return mask;
 165 }
 166
 167 static mod_t mask_to_mod(xcb_mod_mask_t mask, int up)
 168 {
 169         mod_t mod = { .up = up };
 170         if (mask & XCB_MOD_MASK_1)       mod.alt   = 1;
 171         if (mask & XCB_MOD_MASK_CONTROL) mod.ctrl  = 1;
 172         if (mask & XCB_MOD_MASK_SHIFT)   mod.shift = 1;
 173         if (mask & XCB_MOD_MASK_4)       mod.win   = 1;
 174         return mod;
 175 }
 176
 177 /* Mouse pointers */
 178 static ptr_t list_to_ptr(int16_t *list)
 179 {
 180         ptr_t ptr = {};
 181         if (list) {
 182                 ptr.rx = list[0]; // root_x
 183                 ptr.ry = list[1]; // root_y
 184                 ptr.x  = list[2]; // event_x
 185                 ptr.y  = list[3]; // event_y
 186         }
 187         return ptr;
 188 }
 189
 190 /********************
 191  * Window functions *
 192  ********************/
 193
 194 static int win_cmp(const void *_a, const void *_b)
 195 {
 196         const win_t *a = _a;
 197         const win_t *b = _b;
 198         if (a->sys->xcb < b->sys->xcb) return -1;
 199         if (a->sys->xcb > b->sys->xcb) return  1;
 200         return 0;
 201 }
 202
 203 static win_t *win_get(xcb_window_t xcb)
 204 {
 205         win_sys_t sys = { .xcb =  xcb };
 206         win_t     key = { .sys = &sys };
 207
 208         win_t   **win = tfind(&key, &cache, win_cmp);
 209
 210         if (!win) {
 211                 warn("no window for %u", xcb);
 212                 return NULL;
 213         }
 214
 215         return *win;
 216 }
 217
 218 /****************
 219  * XCB Wrappers *
 220  ****************/
 221
 222 static int do_query_tree(xcb_window_t win, xcb_window_t **kids)
 223 {
 224         xcb_query_tree_cookie_t cookie =
 225                 xcb_query_tree(conn, win);
 226         if (!cookie.sequence)
 227                 return warn("do_query_tree: %d - bad cookie", win);
 228
 229         xcb_query_tree_reply_t *reply =
 230                 xcb_query_tree_reply(conn, cookie, NULL);
 231         if (!reply)
 232                 return warn("do_query_tree: %d - no reply", win);
 233
 234         int nkids = xcb_query_tree_children_length(reply);
 235         *kids = xcb_query_tree_children(reply);
 236         printf("do_query_tree: %d - n=%d\n", win, nkids);
 237         return nkids;
 238 }
 239
 240 static int do_get_geometry(xcb_window_t win,
 241                 int *x, int *y, int *w, int *h)
 242 {
 243         xcb_get_geometry_cookie_t cookie =
 244                 xcb_get_geometry(conn, win);
 245         if (!cookie.sequence)
 246                 return warn("do_get_geometry: %d - bad cookie", win);
 247
 248         xcb_get_geometry_reply_t *reply =
 249                 xcb_get_geometry_reply(conn, cookie, NULL);
 250         if (!reply)
 251                 return warn("do_get_geometry: %d - no reply", win);
 252
 253         printf("do_get_geometry: %d - %dx%d @ %d,%d\n",
 254                         win, reply->width, reply->height, reply->x, reply->y);
 255         *x = reply->x;
 256         *y = reply->y;
 257         *w = reply->width;
 258         *h = reply->height;
 259         return 1;
 260 }
 261
 262 static int do_get_window_attributes(xcb_window_t win,
 263                 int *override, int *mapped)
 264 {
 265         xcb_get_window_attributes_cookie_t cookie =
 266                 xcb_get_window_attributes(conn, win);
 267         if (!cookie.sequence)
 268                 return warn("do_get_window_attributes: %d - bad cookie", win);
 269
 270         xcb_get_window_attributes_reply_t *reply =
 271                 xcb_get_window_attributes_reply(conn, cookie, NULL);
 272         if (!reply)
 273                 return warn("do_get_window_attributes: %d - no reply ", win);
 274
 275         printf("do_get_window_attributes: %d - %d\n",
 276                         win, reply->override_redirect);
 277         *override = reply->override_redirect;
 278         *mapped   = reply->map_state != XCB_MAP_STATE_UNMAPPED;
 279         return 1;
 280 }
 281
 282 static int do_xinerama_check(void)
 283 {
 284         const xcb_query_extension_reply_t *data =
 285                 xcb_get_extension_data(conn, &xcb_xinerama_id);
 286         if (!data || !data->present)
 287                 return warn("do_xinerama_check: no ext");
 288
 289         xcb_xinerama_is_active_cookie_t cookie =
 290                 xcb_xinerama_is_active(conn);
 291         if (!cookie.sequence)
 292                 return warn("do_xinerama_check: no cookie");
 293
 294         xcb_xinerama_is_active_reply_t *reply =
 295                 xcb_xinerama_is_active_reply(conn, cookie, NULL);
 296         if (!reply)
 297                 warn("do_xinerama_check: no reply");
 298
 299         printf("do_xinerama_check: %d\n", reply->state);
 300         return reply && reply->state;
 301 }
 302
 303 static int do_query_screens(xcb_xinerama_screen_info_t **info)
 304 {
 305         xcb_xinerama_query_screens_cookie_t cookie =
 306                 xcb_xinerama_query_screens(conn);
 307         if (!cookie.sequence)
 308                 return warn("do_query_screens: bad cookie");
 309
 310         xcb_xinerama_query_screens_reply_t *reply =
 311                 xcb_xinerama_query_screens_reply(conn, cookie, NULL);
 312         if (!reply)
 313                 return warn("do_query_screens: no reply");
 314
 315         int ninfo = xcb_xinerama_query_screens_screen_info_length(reply);
 316         *info = xcb_xinerama_query_screens_screen_info(reply);
 317         printf("do_query_screens: %d screens\n", ninfo);
 318         return ninfo;
 319 }
 320
 321 static int do_get_input_focus(void)
 322 {
 323         xcb_get_input_focus_cookie_t cookie =
 324                 xcb_get_input_focus(conn);
 325         if (!cookie.sequence)
 326                 return warn("do_get_input_focus: bad cookie");
 327
 328         xcb_get_input_focus_reply_t *reply =
 329                 xcb_get_input_focus_reply(conn, cookie, NULL);
 330         if (!reply)
 331                 return warn("do_get_input_focus: no reply");
 332
 333         return reply->focus;
 334 }
 335
 336 static xcb_atom_t do_intern_atom(const char *name)
 337 {
 338         xcb_intern_atom_cookie_t cookie =
 339                 xcb_intern_atom(conn, 0, strlen(name), name);
 340         if (!cookie.sequence)
 341                 return warn("do_intern_atom: bad cookie");
 342
 343         xcb_intern_atom_reply_t *reply =
 344                 xcb_intern_atom_reply(conn, cookie, NULL);
 345         if (!reply)
 346                 return warn("do_intern_atom: no reply");
 347
 348         return reply->atom;
 349 }
 350
 351 static int do_ewmh_init_atoms(void)
 352 {
 353         xcb_intern_atom_cookie_t *cookies =
 354                 xcb_ewmh_init_atoms(conn, &ewmh);
 355         if (!cookies)
 356                 return warn("do_ewmh_init_atoms: no cookies");
 357
 358         int status =
 359                 xcb_ewmh_init_atoms_replies(&ewmh, cookies, NULL);
 360         if (!status)
 361                 return warn("do_ewmh_init_atoms: no status");
 362         return status;
 363 }
 364
 365 static int do_get_strut(xcb_window_t win, strut_t *strut)
 366 {
 367         xcb_get_property_cookie_t cookie =
 368                 xcb_ewmh_get_wm_strut(&ewmh, win);
 369         if (!cookie.sequence)
 370                 return warn("do_get_strut: bad cookie");
 371
 372         xcb_ewmh_get_extents_reply_t ext = {};
 373         int status =
 374                 xcb_ewmh_get_wm_strut_reply(&ewmh, cookie, &ext, NULL);
 375         if (!status)
 376                 return warn("do_get_strut: no status");
 377
 378         strut->left   = ext.left;
 379         strut->right  = ext.right;
 380         strut->top    = ext.top;
 381         strut->bottom = ext.bottom;
 382
 383         return ext.left || ext.right || ext.top || ext.bottom;
 384 }
 385
 386 static xcb_pixmap_t do_alloc_color(uint32_t rgb)
 387 {
 388         uint16_t r = (rgb & 0xFF0000) >> 8;
 389         uint16_t g = (rgb & 0x00FF00);
 390         uint16_t b = (rgb & 0x0000FF) << 8;
 391         xcb_alloc_color_cookie_t cookie =
 392                 xcb_alloc_color(conn, colormap, r, g, b);
 393         if (!cookie.sequence)
 394                 return warn("do_alloc_color: bad cookie");
 395
 396         xcb_alloc_color_reply_t *reply =
 397                 xcb_alloc_color_reply(conn, cookie, NULL);
 398         if (!reply)
 399                 return warn("do_alloc_color: no reply");
 400
 401         printf("do_alloc_color: %06x -> %06x\n", rgb, reply->pixel);
 402         return reply->pixel;
 403 }
 404
 405 static void do_grab_pointer(xcb_event_mask_t mask)
 406 {
 407         if (!grabbed)
 408                 xcb_grab_pointer(conn, 0, root, mask,
 409                                 XCB_GRAB_MODE_ASYNC,
 410                                 XCB_GRAB_MODE_ASYNC,
 411                                 0, 0, XCB_CURRENT_TIME);
 412         grabbed++;
 413 }
 414
 415 static void do_ungrab_pointer(void)
 416 {
 417         grabbed--;
 418         if (!grabbed)
 419                 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
 420 }
 421
 422 static void do_configure_window(xcb_window_t win,
 423                 int x, int y, int w, int h,
 424                 int b, int s, int r)
 425 {
 426         int table[][2] = {
 427                 { x, XCB_CONFIG_WINDOW_X            },
 428                 { y, XCB_CONFIG_WINDOW_Y            },
 429                 { w, XCB_CONFIG_WINDOW_WIDTH        },
 430                 { h, XCB_CONFIG_WINDOW_HEIGHT       },
 431                 { b, XCB_CONFIG_WINDOW_BORDER_WIDTH },
 432                 { s, XCB_CONFIG_WINDOW_SIBLING      },
 433                 { r, XCB_CONFIG_WINDOW_STACK_MODE   },
 434         };
 435
 436         uint16_t mask    = 0;
 437         uint32_t list[7] = {};
 438         for (int i = 0; i < 7; i++) {
 439                 if (table[i][0] >= 0) {
 440                         list[i] = table[i][0];
 441                         mask   |= table[i][1];
 442                 }
 443         }
 444
 445         xcb_configure_window(conn, win, mask, list);
 446 }
 447
 448 static int do_client_message(xcb_window_t win, xcb_atom_t atom)
 449 {
 450         /* Get protocols */
 451         xcb_get_property_cookie_t cookie =
 452                 xcb_icccm_get_wm_protocols(conn, win, wm_protos);
 453         if (!cookie.sequence)
 454                 return warn("do_client_message: %d - bad cookie", win);
 455
 456         xcb_icccm_get_wm_protocols_reply_t protos = {};
 457         if (!xcb_icccm_get_wm_protocols_reply(conn, cookie, &protos, NULL))
 458                 return warn("do_client_message: %d - no reply", win);
 459
 460         /* Search for the atom */
 461         int found = 0;
 462         for (int i = 0; i < protos.atoms_len; i++)
 463                 if (protos.atoms[i] == atom)
 464                         found = 1;
 465         if (!found)
 466                 return warn("do_client_message: %d - no atom", win);
 467
 468         /* Send the message */
 469         xcb_client_message_event_t msg = {
 470                 .response_type  = XCB_CLIENT_MESSAGE,
 471                 .format         = 32,
 472                 .window         = win,
 473                 .type           = wm_protos,
 474                 .data.data32[0] = atom,
 475                 .data.data32[1] = XCB_CURRENT_TIME,
 476         };
 477         xcb_send_event(conn, 0, win, XCB_EVENT_MASK_NO_EVENT,
 478                         (const char *)&msg);
 479         return 1;
 480 }
 481
 482 /**************************
 483  * Window Manager Helpers *
 484  **************************/
 485
 486 /* Send event info */
 487 static int send_event(event_t ev, xcb_window_t ewin)
 488 {
 489         win_t *win = win_get(ewin);
 490         do_grab_pointer(0);
 491         int status = wm_handle_event(win, ev, MOD(), PTR());
 492         do_ungrab_pointer();
 493         return status;
 494 }
 495
 496 /* Send event info */
 497 static int send_event_info(event_t ev, xcb_mod_mask_t mask, int up, int16_t *pos,
 498                 xcb_window_t rwin, xcb_window_t ewin, xcb_window_t cwin)
 499 {
 500         xcb_window_t xcb = ewin == rwin ? cwin : ewin;
 501         win_t *win = win_get(xcb);
 502         mod_t  mod = mask_to_mod(mask, up);
 503         ptr_t  ptr = list_to_ptr(pos);
 504         do_grab_pointer(0);
 505         int status = wm_handle_event(win, ev, mod, ptr);
 506         do_ungrab_pointer();
 507         return status;
 508 }
 509
 510 /* Send pointer motion info */
 511 static int send_pointer(int16_t *pos,
 512                 xcb_window_t rwin, xcb_window_t ewin, xcb_window_t cwin)
 513 {
 514         xcb_window_t xcb = ewin == rwin ? cwin : ewin;
 515         win_t *win = win_get(xcb);
 516         ptr_t  ptr = list_to_ptr(pos);
 517         do_grab_pointer(0);
 518         int status = wm_handle_ptr(win, ptr);
 519         do_ungrab_pointer();
 520         return status;
 521 }
 522
 523 /* Send window state info */
 524 static void send_manage(win_t *win, int managed)
 525 {
 526         if (win->sys->managed == managed)
 527                 return;
 528         if (managed)
 529                 wm_insert(win);
 530         else
 531                 wm_remove(win);
 532         win->sys->managed = managed;
 533 }
 534
 535 /* Send window state info */
 536 static void send_state(win_t *win, state_t next)
 537 {
 538         if (!win->sys->managed)
 539                 return;
 540         if (win->state == next)
 541                 return;
 542         state_t prev = win->state;
 543         win->state = next;
 544         wm_handle_state(win, prev, next);
 545 }
 546
 547 /**********************
 548  * X11 Event Handlers *
 549  **********************/
 550
 551 /* Specific events */
 552 static void on_key_event(xcb_key_press_event_t *event, int up)
 553 {
 554         printf("on_key_event:         xcb=%-8u\n", event->event);
 555         xcb_window_t focus = do_get_input_focus();
 556         event_t ev = keycode_to_event(event->detail);
 557         send_event_info(ev, event->state, up, &event->root_x,
 558                 event->root, focus, event->child);
 559 }
 560
 561 static void on_button_event(xcb_button_press_event_t *event, int up)
 562 {
 563         printf("on_button_event:      xcb=%-8u\n", event->event);
 564         event_t ev = button_to_event(event->detail);
 565         if (!send_event_info(ev, event->state, up, &event->root_x,
 566                                 event->root, event->event, event->child))
 567                 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
 568         else if (!up)
 569                 do_grab_pointer(XCB_EVENT_MASK_POINTER_MOTION |
 570                                 XCB_EVENT_MASK_BUTTON_RELEASE);
 571         else
 572                 do_ungrab_pointer();
 573
 574 }
 575
 576 static void on_motion_notify(xcb_motion_notify_event_t *event)
 577 {
 578         printf("on_motion_notify:     xcb=%-8u - %d,%d / %d.%d\n", event->event,
 579                         event->event_x, event->event_y,
 580                         event->root_x,  event->root_y);
 581         send_pointer(&event->root_x, event->root, event->event, event->child);
 582 }
 583
 584 static void on_enter_notify(xcb_enter_notify_event_t *event)
 585 {
 586         if (event->mode != XCB_NOTIFY_MODE_NORMAL)
 587                 return;
 588         printf("on_enter_notify:      xcb=%-8u\n", event->event);
 589         send_event_info(EV_ENTER, event->state, 0, &event->root_x,
 590                 event->root, event->event, event->child);
 591 }
 592
 593 static void on_leave_notify(xcb_leave_notify_event_t *event)
 594 {
 595         if (event->mode != XCB_NOTIFY_MODE_NORMAL)
 596                 return;
 597         printf("on_leave_notify:      xcb=%-8u\n", event->event);
 598         send_event_info(EV_LEAVE, event->state, 0, &event->root_x,
 599                 event->root, event->event, event->child);
 600 }
 601
 602 static void on_focus_in(xcb_focus_in_event_t *event)
 603 {
 604         if (event->mode != XCB_NOTIFY_MODE_NORMAL &&
 605             event->mode != XCB_NOTIFY_MODE_WHILE_GRABBED)
 606                 return;
 607         printf("on_focus_in:          xcb=%-8u mode=%d\n", event->event, event->mode);
 608         xcb_change_window_attributes(conn, event->event,
 609                         XCB_CW_BORDER_PIXEL, &colors[CLR_FOCUS]);
 610         if (event->mode == XCB_NOTIFY_MODE_NORMAL)
 611                 send_event(EV_FOCUS, event->event);
 612 }
 613
 614 static void on_focus_out(xcb_focus_out_event_t *event)
 615 {
 616         if (event->mode != XCB_NOTIFY_MODE_NORMAL &&
 617             event->mode != XCB_NOTIFY_MODE_WHILE_GRABBED)
 618                 return;
 619         printf("on_focus_out:         xcb=%-8u mode=%d\n", event->event, event->mode);
 620         xcb_change_window_attributes(conn, event->event,
 621                         XCB_CW_BORDER_PIXEL, &colors[CLR_UNFOCUS]);
 622         if (event->mode == XCB_NOTIFY_MODE_NORMAL)
 623                 send_event(EV_UNFOCUS, event->event);
 624 }
 625
 626 static void on_create_notify(xcb_create_notify_event_t *event)
 627 {
 628         win_t     *win = new0(win_t);
 629         win_sys_t *sys = new0(win_sys_t);
 630
 631         printf("on_create_notify:     xcb=%-8u -> win=%p\n",
 632                         event->window, win);
 633
 634         win->x        = event->x;
 635         win->y        = event->y;
 636         win->w        = event->width;
 637         win->h        = event->height;
 638         win->sys      = sys;
 639
 640         sys->xcb      = event->window;
 641
 642         if (!event->override_redirect)
 643                 send_manage(win, 1);
 644
 645         tsearch(win, &cache, win_cmp);
 646 }
 647
 648 static void on_destroy_notify(xcb_destroy_notify_event_t *event)
 649 {
 650         win_t *win = win_get(event->window);
 651         printf("on_destroy_notify:    xcb=%-8u -> win=%p\n",
 652                         event->window, win);
 653         if (!win) return;
 654
 655         send_manage(win, 0);
 656
 657         tdelete(win, &cache, win_cmp);
 658
 659         free(win->sys);
 660         free(win);
 661 }
 662
 663 static void on_unmap_notify(xcb_unmap_notify_event_t *event)
 664 {
 665         win_t *win = win_get(event->window);
 666         printf("on_unmap_notify:      xcb=%-8u -> win=%p\n",
 667                         event->window, win);
 668         if (!win) return;
 669
 670         send_state(win, ST_HIDE);
 671 }
 672
 673 static void on_map_notify(xcb_map_notify_event_t *event)
 674 {
 675         win_t *win = win_get(event->window);
 676         printf("on_map_notify:        xcb=%-8u -> win=%p\n",
 677                         event->window, win);
 678         if (!win) return;
 679
 680         send_state(win, ST_SHOW);
 681 }
 682
 683 static void on_map_request(xcb_map_request_event_t *event)
 684 {
 685         win_t *win = win_get(event->window);
 686         printf("on_map_request:       xcb=%-8u -> win=%p\n",
 687                         event->window, win);
 688         if (!win) return;
 689
 690         if (do_get_strut(win->sys->xcb, &win->sys->strut))
 691                 printf("Map: Got a strut!\n");
 692         else
 693                 printf("Map: No struts here!\n");
 694
 695         send_state(win, ST_SHOW);
 696         xcb_map_window(conn, win->sys->xcb);
 697         sys_move(win, win->x, win->y, win->w, win->h);
 698 }
 699
 700 static void on_configure_request(xcb_configure_request_event_t *event)
 701 {
 702         win_t *win = win_get(event->window);
 703         printf("on_configure_request: xcb=%-8u -> win=%p -- %dx%d @ %d,%d\n",
 704                         event->window, win,
 705                         event->width, event->height,
 706                         event->x, event->y);
 707         if (!win) return;
 708
 709         win->x = event->x;
 710         win->y = event->y;
 711         win->w = event->width;
 712         win->h = event->height;
 713
 714         xcb_configure_notify_event_t resp = {
 715                 .response_type = XCB_CONFIGURE_NOTIFY,
 716                 .event         = win->sys->xcb,
 717                 .window        = win->sys->xcb,
 718                 .x             = win->x,
 719                 .y             = win->y,
 720                 .width         = win->w,
 721                 .height        = win->h,
 722                 .border_width  = border,
 723         };
 724
 725         xcb_send_event(conn, 0, win->sys->xcb,
 726                         XCB_EVENT_MASK_STRUCTURE_NOTIFY,
 727                         (const char *)&resp);
 728 }
 729
 730 /* Generic Event */
 731 static void on_event(xcb_generic_event_t *event)
 732 {
 733         int type = XCB_EVENT_RESPONSE_TYPE(event);
 734
 735         switch (type) {
 736                 /* Input handling */
 737                 case XCB_KEY_PRESS:
 738                         on_key_event((xcb_key_press_event_t *)event, 0);
 739                         break;
 740                 case XCB_KEY_RELEASE:
 741                         on_key_event((xcb_key_release_event_t *)event, 1);
 742                         break;
 743                 case XCB_BUTTON_PRESS:
 744                         on_button_event((xcb_button_press_event_t *)event, 0);
 745                         break;
 746                 case XCB_BUTTON_RELEASE:
 747                         on_button_event((xcb_button_release_event_t *)event, 1);
 748                         break;
 749                 case XCB_MOTION_NOTIFY:
 750                         on_motion_notify((xcb_motion_notify_event_t *)event);
 751                         break;
 752                 case XCB_ENTER_NOTIFY:
 753                         on_enter_notify((xcb_enter_notify_event_t *)event);
 754                         break;
 755                 case XCB_LEAVE_NOTIFY:
 756                         on_leave_notify((xcb_leave_notify_event_t *)event);
 757                         break;
 758                 case XCB_FOCUS_IN:
 759                         on_focus_in((xcb_focus_in_event_t *)event);
 760                         break;
 761                 case XCB_FOCUS_OUT:
 762                         on_focus_out((xcb_focus_out_event_t *)event);
 763                         break;
 764
 765                 /* Window management */
 766                 case XCB_CREATE_NOTIFY:
 767                         on_create_notify((xcb_create_notify_event_t *)event);
 768                         break;
 769                 case XCB_DESTROY_NOTIFY:
 770                         on_destroy_notify((xcb_destroy_notify_event_t *)event);
 771                         break;
 772                 case XCB_UNMAP_NOTIFY:
 773                         on_unmap_notify((xcb_unmap_notify_event_t *)event);
 774                         break;
 775                 case XCB_MAP_NOTIFY:
 776                         on_map_notify((xcb_map_notify_event_t *)event);
 777                         break;
 778                 case XCB_MAP_REQUEST:
 779                         on_map_request((xcb_map_request_event_t *)event);
 780                         break;
 781                 case XCB_CONFIGURE_REQUEST:
 782                         on_configure_request((xcb_configure_request_event_t *)event);
 783                         break;
 784
 785                 /* Unknown events */
 786                 default:
 787                         printf("on_event: %d:%02X -> %s\n",
 788                                 XCB_EVENT_SENT(event) != 0,
 789                                 XCB_EVENT_RESPONSE_TYPE(event),
 790                                 xcb_event_get_label(type) ?: "unknown_event");
 791                         break;
 792         }
 793 }
 794
 795 /********************
 796  * System functions *
 797  ********************/
 798
 799 void sys_move(win_t *win, int x, int y, int w, int h)
 800 {
 801         printf("sys_move:  %p - %dx%d @ %d,%d\n",
 802                         win, w, h, x, y);
 803
 804         int b = 2*border;
 805
 806         win->x = x;
 807         win->y = y;
 808         win->w = MAX(w,1+b);
 809         win->h = MAX(h,1+b);
 810         w      = MAX(w-b,1);
 811         h      = MAX(h-b,1);
 812
 813         do_configure_window(win->sys->xcb, x, y, w, h, -1, -1, -1);
 814 }
 815
 816 void sys_raise(win_t *win)
 817 {
 818         printf("sys_raise: %p\n", win);
 819
 820         uint16_t mask = XCB_CONFIG_WINDOW_STACK_MODE;
 821         uint32_t list = XCB_STACK_MODE_ABOVE;
 822
 823         xcb_configure_window(conn, win->sys->xcb, mask, &list);
 824 }
 825
 826 void sys_focus(win_t *win)
 827 {
 828         printf("sys_focus: %p\n", win);
 829         xcb_window_t xcb = win ? win->sys->xcb : root;
 830
 831         xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT,
 832                         xcb, XCB_CURRENT_TIME);
 833 }
 834
 835 void sys_show(win_t *win, state_t state)
 836 {
 837         printf("sys_show:  %p - %s -> %s\n", win,
 838                         state_map[win->state], state_map[state]);
 839         xcb_window_t xcb = win ? win->sys->xcb : root;
 840
 841         /* Find screen */
 842         win_t *screen = NULL;
 843         if (state == ST_FULL || state == ST_MAX) {
 844                 for (list_t *cur = screens; cur; cur = cur->next) {
 845                         screen = cur->data;
 846                         if (win->x >= screen->x && win->x <= screen->x+screen->w &&
 847                             win->y >= screen->y && win->y <= screen->y+screen->h)
 848                                 break;
 849                 }
 850         }
 851
 852         /* Change window state */
 853         switch (state) {
 854                 case ST_HIDE:
 855                         xcb_unmap_window(conn, xcb);
 856                         break;
 857
 858                 case ST_SHOW:
 859                         xcb_map_window(conn, xcb);
 860                         do_configure_window(xcb, win->x, win->y,
 861                                         MAX(win->w - 2*border, 1),
 862                                         MAX(win->h - 2*border, 1),
 863                                         border, -1, -1);
 864                         break;
 865
 866                 case ST_FULL:
 867                         xcb_map_window(conn, xcb);
 868                         do_configure_window(xcb, screen->x, screen->y, screen->w, screen->h,
 869                                         0, -1, XCB_STACK_MODE_ABOVE);
 870                         xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, xcb);
 871                         break;
 872
 873                 case ST_MAX:
 874                         xcb_map_window(conn, xcb);
 875                         do_configure_window(xcb, screen->x, screen->y,
 876                                         MAX(screen->w - 2*border, 1),
 877                                         MAX(screen->h - 2*border, 1),
 878                                         border, -1, XCB_STACK_MODE_ABOVE);
 879                         break;
 880
 881                 case ST_SHADE:
 882                         xcb_map_window(conn, xcb);
 883                         do_configure_window(xcb, -1, -1, -1, stack,
 884                                         border, -1, -1);
 885                         break;
 886
 887                 case ST_ICON:
 888                         xcb_map_window(conn, xcb);
 889                         do_configure_window(xcb, -1, -1, 100, 100,
 890                                         border, -1, -1);
 891                         break;
 892
 893                 case ST_CLOSE:
 894                         if (!do_client_message(xcb, wm_delete))
 895                                 xcb_kill_client(conn, xcb);
 896                         break;
 897         }
 898
 899         /* Update state */
 900         win->state = state;
 901 }
 902
 903 void sys_watch(win_t *win, event_t ev, mod_t mod)
 904 {
 905         printf("sys_watch: %p - 0x%X,0x%X\n", win, ev, mod2int(mod));
 906         xcb_window_t      xcb  = win ? win->sys->xcb     : root;
 907         xcb_event_mask_t *mask = win ? &win->sys->events : &events;
 908         xcb_mod_mask_t    mods = 0;
 909         xcb_button_t      btn  = 0;
 910         xcb_keycode_t    *code = 0;
 911
 912         switch (ev) {
 913                 case EV_ENTER:
 914                         *mask |= XCB_EVENT_MASK_ENTER_WINDOW;
 915                         xcb_change_window_attributes(conn, xcb, XCB_CW_EVENT_MASK, mask);
 916                         break;
 917
 918                 case EV_LEAVE:
 919                         *mask |= XCB_EVENT_MASK_LEAVE_WINDOW;
 920                         xcb_change_window_attributes(conn, xcb, XCB_CW_EVENT_MASK, mask);
 921                         break;
 922
 923                 case EV_FOCUS:
 924                 case EV_UNFOCUS:
 925                         *mask |= XCB_EVENT_MASK_FOCUS_CHANGE;
 926                         xcb_change_window_attributes(conn, xcb, XCB_CW_EVENT_MASK, mask);
 927                         break;
 928
 929                 case EV_MOUSE0...EV_MOUSE7:
 930                         btn    = event_to_button(ev);
 931                         mods   = mod_to_mask(mod);
 932                         *mask |= mod.up ? XCB_EVENT_MASK_BUTTON_RELEASE
 933                                         : XCB_EVENT_MASK_BUTTON_PRESS;
 934                         xcb_grab_button(conn, 0, xcb, *mask,
 935                                         XCB_GRAB_MODE_ASYNC,
 936                                         XCB_GRAB_MODE_ASYNC,
 937                                         0, 0, btn, mods);
 938                         break;
 939
 940                 default:
 941                         code = event_to_keycodes(ev);
 942                         mods = mod_to_mask(mod);
 943                         for (int i = 0; code && code[i] != XCB_NO_SYMBOL; i++)
 944                                 xcb_grab_key(conn, 1, xcb, mods, code[i],
 945                                                 XCB_GRAB_MODE_ASYNC,
 946                                                 XCB_GRAB_MODE_ASYNC);
 947
 948                         break;
 949         }
 950 }
 951
 952 void sys_unwatch(win_t *win, event_t ev, mod_t mod)
 953 {
 954         printf("sys_unwatch: %p - 0x%X,0x%X\n", win, ev, mod2int(mod));
 955 }
 956
 957 list_t *sys_info(void)
 958 {
 959         printf("sys_info\n");
 960
 961         if (screens == NULL && do_xinerama_check()) {
 962                 /* Add Xinerama screens */
 963                 xcb_xinerama_screen_info_t *info = NULL;
 964                 int ninfo = do_query_screens(&info);
 965                 for (int i = 0; i < ninfo; i++) {
 966                         win_t *screen = new0(win_t);
 967
 968                         screen->x = info[i].x_org;
 969                         screen->y = info[i].y_org;
 970                         screen->w = info[i].width;
 971                         screen->h = info[i].height;
 972
 973                         screens = list_insert(NULL, screen);
 974
 975                         printf("sys_info: xinerama screen - %dx%d @ %d,%d\n",
 976                                         screen->w, screen->h,
 977                                         screen->x, screen->y);
 978                 }
 979         }
 980
 981         if (screens == NULL) {
 982                 /* No xinerama support */
 983                 const xcb_setup_t *setup = xcb_get_setup(conn);
 984                 xcb_screen_t      *geom  = xcb_setup_roots_iterator(setup).data;
 985
 986                 win_t *screen = new0(win_t);
 987
 988                 screen->w = geom->width_in_pixels;
 989                 screen->h = geom->height_in_pixels;
 990
 991                 screens = list_insert(NULL, screen);
 992
 993                 printf("sys_info: root screen - %dx%d\n",
 994                                 screen->w, screen->h);
 995         }
 996
 997         return screens;
 998 }
 999
1000 void sys_init(void)
1001 {
1002         printf("sys_init\n");
1003
1004         /* Load configuration */
1005         stack      = conf_get_int("main.stack",      stack);
1006         border     = conf_get_int("main.border",     border);
1007         no_capture = conf_get_int("main.no-capture", no_capture);
1008
1009         /* Connect to display */
1010         if (!(conn = xcb_connect(NULL, NULL)))
1011                 error("xcb connect failed");
1012         if (xcb_connection_has_error(conn))
1013                 error("xcb connection has errors");
1014
1015         /* Get root window */
1016         const xcb_setup_t     *setup = xcb_get_setup(conn);
1017         xcb_screen_iterator_t  iter  = xcb_setup_roots_iterator(setup);
1018         root     = iter.data->root;
1019         colormap = iter.data->default_colormap;
1020
1021         /* Setup X Atoms */
1022         wm_protos = do_intern_atom("WM_PROTOCOLS");
1023         wm_delete = do_intern_atom("WM_DELETE_WINDOW");
1024         if (!wm_protos || !wm_delete)
1025                 error("unable to setup atoms");
1026
1027         /* Setup EWMH connection */
1028         if (!do_ewmh_init_atoms())
1029                 error("ewmh setup failed");
1030
1031         /* Setup for for ST_CLOSE */
1032         xcb_set_close_down_mode(conn, XCB_CLOSE_DOWN_DESTROY_ALL);
1033
1034         /* Allocate key symbols */
1035         if (!(keysyms = xcb_key_symbols_alloc(conn)))
1036                 error("cannot allocate key symbols");
1037
1038         /* Read color information */
1039         colors[CLR_FOCUS]   = do_alloc_color(0xFF6060);
1040         colors[CLR_UNFOCUS] = do_alloc_color(0xD8D8FF);
1041         colors[CLR_URGENT]  = do_alloc_color(0xFF0000);
1042
1043         /* Request substructure redirect */
1044         xcb_void_cookie_t cookie;
1045         xcb_generic_error_t *err;
1046         events = XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT |
1047                  XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY;
1048         cookie = xcb_change_window_attributes_checked(conn, root,
1049                         XCB_CW_EVENT_MASK, &events);
1050         if ((err = xcb_request_check(conn, cookie)))
1051                 error("another window manager is already running");
1052 }
1053
1054 void sys_run(void)
1055 {
1056         printf("sys_run\n");
1057
1058         /* Add each initial window */
1059         if (!no_capture) {
1060                 xcb_window_t *kids = NULL;
1061                 int nkids = do_query_tree(root, &kids);
1062                 for(int i = 0; i < nkids; i++) {
1063                         int override=0, mapped=0;
1064                         win_t *win = new0(win_t);
1065                         win->sys = new0(win_sys_t);
1066                         win->sys->xcb = kids[i];
1067                         tsearch(win, &cache, win_cmp);
1068                         do_get_geometry(kids[i], &win->x, &win->y, &win->w, &win->h);
1069                         do_get_window_attributes(kids[i], &override, &mapped);
1070                         if (!override)
1071                                 send_manage(win, 1);
1072                         if (mapped)
1073                                 send_state(win, ST_SHOW);
1074                 }
1075                 xcb_flush(conn);
1076         }
1077
1078         /* Main loop */
1079         while (1)
1080         {
1081                 int status;
1082                 xcb_generic_event_t *event;
1083                 if (!(event = xcb_wait_for_event(conn)))
1084                         break;
1085                 on_event(event);
1086                 free(event);
1087                 if (!(status = xcb_flush(conn)))
1088                         break;
1089         }
1090 }
1091
1092 void sys_exit(void)
1093 {
1094         printf("sys_exit\n");
1095         if (conn)
1096                 xcb_disconnect(conn);
1097         conn = NULL;
1098 }
1099
1100 void sys_free(void)
1101 {
1102         printf("sys_free\n");
1103         if (conn)
1104                 xcb_disconnect(conn);
1105         conn = NULL;
1106 }