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 /* Global data */
  56 static xcb_connection_t      *conn;
  57 static xcb_ewmh_connection_t  ewmh;
  58 static xcb_key_symbols_t     *keysyms;
  59 static xcb_colormap_t         colormap;
  60 static xcb_window_t           root;
  61 static xcb_event_mask_t       events;
  62 static list_t                *screens;
  63 static list_t                *struts;
  64 static void                  *cache;
  65 static unsigned int           grabbed;
  66 static int                    running;
  67 static xcb_window_t           control;
  68
  69 static xcb_pixmap_t           clr_focus;
  70 static xcb_pixmap_t           clr_unfocus;
  71 static xcb_pixmap_t           clr_urgent;
  72
  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 static win_t *win_new(xcb_window_t xcb)
 219 {
 220         win_t *win = new0(win_t);
 221         win->sys = new0(win_sys_t);
 222         win->sys->xcb = xcb;
 223
 224         win_t **old = tfind(win, &cache, win_cmp);
 225         if (old) {
 226                 warn("duplicate window for %u\n", xcb);
 227                 free(win->sys);
 228                 free(win);
 229                 return *old;
 230         }
 231
 232         tsearch(win, &cache, win_cmp);
 233         printf("win_new: xcb=%-8u -> win=%p\n",
 234                         win->sys->xcb, win);
 235         return win;
 236 }
 237
 238 static void win_free(win_t *win)
 239 {
 240         printf("win_free: xcb=%-8u -> win=%p\n",
 241                         win->sys->xcb, win);
 242         free(win->sys);
 243         free(win);
 244 }
 245
 246 static void win_add_strut(win_t *win)
 247 {
 248         win->type = TYPE_TOOLBAR;
 249         for (list_t *cur = screens; cur; cur = cur->next) {
 250                 win_t   *screen = cur->data;
 251                 strut_t *strut  = &win->sys->strut;
 252                 screen->x += strut->left;
 253                 screen->y += strut->top;
 254                 screen->w -= strut->left + strut->right;
 255                 screen->h -= strut->top  + strut->bottom;
 256         }
 257         struts = list_insert(struts, win);
 258
 259 }
 260
 261 static void win_del_strut(win_t *win)
 262 {
 263         list_t *link = list_find(struts, win);
 264         if (!link)
 265                 return;
 266         for (list_t *cur = screens; cur; cur = cur->next) {
 267                 win_t   *screen = cur->data;
 268                 strut_t *strut  = &win->sys->strut;
 269                 screen->x -= strut->left;
 270                 screen->y -= strut->top;
 271                 screen->w += strut->left + strut->right;
 272                 screen->h += strut->top  + strut->bottom;
 273         }
 274         struts = list_remove(struts, link, 0);
 275 }
 276
 277 /****************
 278  * XCB Wrappers *
 279  ****************/
 280
 281 static void *do_query_tree(xcb_window_t xcb, xcb_window_t **kids, int *nkids)
 282 {
 283         xcb_query_tree_cookie_t cookie =
 284                 xcb_query_tree(conn, xcb);
 285         if (!cookie.sequence)
 286                 return warn("do_query_tree: %d - bad cookie", xcb), NULL;
 287
 288         xcb_query_tree_reply_t *reply =
 289                 xcb_query_tree_reply(conn, cookie, NULL);
 290         if (!reply)
 291                 return warn("do_query_tree: %d - no reply", xcb), NULL;
 292
 293         *nkids = xcb_query_tree_children_length(reply);
 294         *kids  = xcb_query_tree_children(reply);
 295         printf("do_query_tree: %d - n=%d\n", xcb, *nkids);
 296         return reply;
 297 }
 298
 299 static int do_get_geometry(xcb_window_t xcb,
 300                 int *x, int *y, int *w, int *h)
 301 {
 302         xcb_get_geometry_cookie_t cookie =
 303                 xcb_get_geometry(conn, xcb);
 304         if (!cookie.sequence)
 305                 return warn("do_get_geometry: %d - bad cookie", xcb);
 306
 307         xcb_get_geometry_reply_t *reply =
 308                 xcb_get_geometry_reply(conn, cookie, NULL);
 309         if (!reply)
 310                 return warn("do_get_geometry: %d - no reply", xcb);
 311
 312         printf("do_get_geometry: %d - %dx%d @ %d,%d\n",
 313                         xcb, reply->width, reply->height, reply->x, reply->y);
 314         *x = reply->x;
 315         *y = reply->y;
 316         *w = reply->width;
 317         *h = reply->height;
 318         free(reply);
 319         return 1;
 320 }
 321
 322 static int do_get_window_attributes(xcb_window_t xcb,
 323                 int *override, int *mapped)
 324 {
 325         xcb_get_window_attributes_cookie_t cookie =
 326                 xcb_get_window_attributes(conn, xcb);
 327         if (!cookie.sequence)
 328                 return warn("do_get_window_attributes: %d - bad cookie", xcb);
 329
 330         xcb_get_window_attributes_reply_t *reply =
 331                 xcb_get_window_attributes_reply(conn, cookie, NULL);
 332         if (!reply)
 333                 return warn("do_get_window_attributes: %d - no reply ", xcb);
 334
 335         printf("do_get_window_attributes: %d - %d\n",
 336                         xcb, reply->override_redirect);
 337         *override = reply->override_redirect;
 338         *mapped   = reply->map_state != XCB_MAP_STATE_UNMAPPED;
 339         free(reply);
 340         return 1;
 341 }
 342
 343 static int do_xinerama_check(void)
 344 {
 345         const xcb_query_extension_reply_t *data =
 346                 xcb_get_extension_data(conn, &xcb_xinerama_id);
 347         if (!data || !data->present)
 348                 return warn("do_xinerama_check: no ext");
 349
 350         xcb_xinerama_is_active_cookie_t cookie =
 351                 xcb_xinerama_is_active(conn);
 352         if (!cookie.sequence)
 353                 return warn("do_xinerama_check: no cookie");
 354
 355         xcb_xinerama_is_active_reply_t *reply =
 356                 xcb_xinerama_is_active_reply(conn, cookie, NULL);
 357         if (!reply)
 358                 return warn("do_xinerama_check: no reply");
 359
 360         printf("do_xinerama_check: %d\n", reply->state);
 361         int state = reply->state;
 362         free(reply);
 363         return state;
 364 }
 365
 366 static void *do_query_screens(xcb_xinerama_screen_info_t **info, int *ninfo)
 367 {
 368         xcb_xinerama_query_screens_cookie_t cookie =
 369                 xcb_xinerama_query_screens(conn);
 370         if (!cookie.sequence)
 371                 return warn("do_query_screens: bad cookie"), NULL;
 372
 373         xcb_xinerama_query_screens_reply_t *reply =
 374                 xcb_xinerama_query_screens_reply(conn, cookie, NULL);
 375         if (!reply)
 376                 return warn("do_query_screens: no reply"), NULL;
 377
 378         *ninfo = xcb_xinerama_query_screens_screen_info_length(reply);
 379         *info  = xcb_xinerama_query_screens_screen_info(reply);
 380         printf("do_query_screens: %d screens\n", *ninfo);
 381         return reply;
 382 }
 383
 384 static int do_get_input_focus(void)
 385 {
 386         xcb_get_input_focus_cookie_t cookie =
 387                 xcb_get_input_focus(conn);
 388         if (!cookie.sequence)
 389                 return warn("do_get_input_focus: bad cookie");
 390
 391         xcb_get_input_focus_reply_t *reply =
 392                 xcb_get_input_focus_reply(conn, cookie, NULL);
 393         if (!reply)
 394                 return warn("do_get_input_focus: no reply");
 395
 396         int focus = reply->focus;
 397         free(reply);
 398         return focus;
 399 }
 400
 401 static xcb_atom_t do_intern_atom(const char *name)
 402 {
 403         xcb_intern_atom_cookie_t cookie =
 404                 xcb_intern_atom(conn, 0, strlen(name), name);
 405         if (!cookie.sequence)
 406                 return warn("do_intern_atom: bad cookie");
 407
 408         xcb_intern_atom_reply_t *reply =
 409                 xcb_intern_atom_reply(conn, cookie, NULL);
 410         if (!reply)
 411                 return warn("do_intern_atom: no reply");
 412
 413         xcb_atom_t atom = reply->atom;
 414         free(reply);
 415         return atom;
 416 }
 417
 418 static int do_ewmh_init_atoms(void)
 419 {
 420         xcb_intern_atom_cookie_t *cookies =
 421                 xcb_ewmh_init_atoms(conn, &ewmh);
 422         if (!cookies)
 423                 return warn("do_ewmh_init_atoms: no cookies");
 424
 425         int status =
 426                 xcb_ewmh_init_atoms_replies(&ewmh, cookies, NULL);
 427         if (!status)
 428                 return warn("do_ewmh_init_atoms: no status");
 429         return status;
 430 }
 431
 432 static int do_get_strut(xcb_window_t xcb, strut_t *strut)
 433 {
 434         xcb_get_property_cookie_t cookie =
 435                 xcb_ewmh_get_wm_strut(&ewmh, xcb);
 436         if (!cookie.sequence)
 437                 return warn("do_get_strut: bad cookie");
 438
 439         xcb_ewmh_get_extents_reply_t ext = {};
 440         int status =
 441                 xcb_ewmh_get_wm_strut_reply(&ewmh, cookie, &ext, NULL);
 442         if (!status)
 443                 return warn("do_get_strut: no status");
 444
 445         strut->left   = ext.left;
 446         strut->right  = ext.right;
 447         strut->top    = ext.top;
 448         strut->bottom = ext.bottom;
 449
 450         return ext.left || ext.right || ext.top || ext.bottom;
 451 }
 452
 453 static xcb_pixmap_t do_alloc_color(uint32_t rgb)
 454 {
 455         uint16_t r = (rgb & 0xFF0000) >> 8;
 456         uint16_t g = (rgb & 0x00FF00);
 457         uint16_t b = (rgb & 0x0000FF) << 8;
 458         xcb_alloc_color_cookie_t cookie =
 459                 xcb_alloc_color(conn, colormap, r, g, b);
 460         if (!cookie.sequence)
 461                 return warn("do_alloc_color: bad cookie");
 462
 463         xcb_alloc_color_reply_t *reply =
 464                 xcb_alloc_color_reply(conn, cookie, NULL);
 465         if (!reply)
 466                 return warn("do_alloc_color: no reply");
 467
 468         printf("do_alloc_color: %06x -> %06x\n", rgb, reply->pixel);
 469         xcb_pixmap_t pixel = reply->pixel;
 470         free(reply);
 471         return pixel;
 472 }
 473
 474 static void do_grab_pointer(xcb_event_mask_t mask)
 475 {
 476         if (!grabbed)
 477                 xcb_grab_pointer(conn, 0, root, mask,
 478                                 XCB_GRAB_MODE_ASYNC,
 479                                 XCB_GRAB_MODE_ASYNC,
 480                                 0, 0, XCB_CURRENT_TIME);
 481         grabbed++;
 482 }
 483
 484 static void do_ungrab_pointer(void)
 485 {
 486         grabbed--;
 487         if (!grabbed)
 488                 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
 489 }
 490
 491 static void do_configure_window(xcb_window_t xcb,
 492                 int x, int y, int w, int h,
 493                 int b, int s, int r)
 494 {
 495         int table[][2] = {
 496                 { x, XCB_CONFIG_WINDOW_X            },
 497                 { y, XCB_CONFIG_WINDOW_Y            },
 498                 { w, XCB_CONFIG_WINDOW_WIDTH        },
 499                 { h, XCB_CONFIG_WINDOW_HEIGHT       },
 500                 { b, XCB_CONFIG_WINDOW_BORDER_WIDTH },
 501                 { s, XCB_CONFIG_WINDOW_SIBLING      },
 502                 { r, XCB_CONFIG_WINDOW_STACK_MODE   },
 503         };
 504
 505         uint16_t mask    = 0;
 506         uint32_t list[7] = {};
 507         for (int i = 0; i < 7; i++) {
 508                 if (table[i][0] >= 0) {
 509                         list[i] = table[i][0];
 510                         mask   |= table[i][1];
 511                 }
 512         }
 513
 514         xcb_configure_window(conn, xcb, mask, list);
 515 }
 516
 517 static int do_client_message(xcb_window_t xcb, xcb_atom_t atom)
 518 {
 519         /* Get protocols */
 520         xcb_get_property_cookie_t cookie =
 521                 xcb_icccm_get_wm_protocols(conn, xcb, wm_protos);
 522         if (!cookie.sequence)
 523                 return warn("do_client_message: %d - bad cookie", xcb);
 524
 525         xcb_icccm_get_wm_protocols_reply_t protos = {};
 526         if (!xcb_icccm_get_wm_protocols_reply(conn, cookie, &protos, NULL))
 527                 return warn("do_client_message: %d - no reply", xcb);
 528
 529         /* Search for the atom */
 530         int found = 0;
 531         for (int i = 0; i < protos.atoms_len; i++)
 532                 if (protos.atoms[i] == atom)
 533                         found = 1;
 534         xcb_icccm_get_wm_protocols_reply_wipe(&protos);
 535         if (!found)
 536                 return warn("do_client_message: %d - no atom", xcb);
 537
 538         /* Send the message */
 539         xcb_client_message_event_t msg = {
 540                 .response_type  = XCB_CLIENT_MESSAGE,
 541                 .format         = 32,
 542                 .window         = xcb,
 543                 .type           = wm_protos,
 544                 .data.data32[0] = atom,
 545                 .data.data32[1] = XCB_CURRENT_TIME,
 546         };
 547         xcb_send_event(conn, 0, xcb, XCB_EVENT_MASK_NO_EVENT,
 548                         (const char *)&msg);
 549         return 1;
 550 }
 551
 552 /**************************
 553  * Window Manager Helpers *
 554  **************************/
 555
 556 /* Send event info */
 557 static int send_event(event_t ev, xcb_window_t ewin)
 558 {
 559         win_t *win = win_get(ewin);
 560         do_grab_pointer(0);
 561         int status = wm_handle_event(win, ev, MOD(), PTR());
 562         do_ungrab_pointer();
 563         return status;
 564 }
 565
 566 /* Send event info */
 567 static int send_event_info(event_t ev, xcb_mod_mask_t mask, int up, int16_t *pos,
 568                 xcb_window_t rwin, xcb_window_t ewin, xcb_window_t cwin)
 569 {
 570         xcb_window_t xcb = ewin == rwin ? cwin : ewin;
 571         win_t *win = win_get(xcb);
 572         mod_t  mod = mask_to_mod(mask, up);
 573         ptr_t  ptr = list_to_ptr(pos);
 574         do_grab_pointer(0);
 575         int status = wm_handle_event(win, ev, mod, ptr);
 576         do_ungrab_pointer();
 577         return status;
 578 }
 579
 580 /* Send pointer motion info */
 581 static int send_pointer(int16_t *pos,
 582                 xcb_window_t rwin, xcb_window_t ewin, xcb_window_t cwin)
 583 {
 584         xcb_window_t xcb = ewin == rwin ? cwin : ewin;
 585         win_t *win = win_get(xcb);
 586         ptr_t  ptr = list_to_ptr(pos);
 587         do_grab_pointer(0);
 588         int status = wm_handle_ptr(win, ptr);
 589         do_ungrab_pointer();
 590         return status;
 591 }
 592
 593 /* Send window state info */
 594 static void send_manage(win_t *win, int managed)
 595 {
 596         if (win->sys->managed == managed)
 597                 return;
 598         if (managed)
 599                 wm_insert(win);
 600         else
 601                 wm_remove(win);
 602         win->sys->managed = managed;
 603 }
 604
 605 /* Send window state info */
 606 static void send_state(win_t *win, state_t next)
 607 {
 608         if (!win->sys->managed)
 609                 return;
 610         if (win->state == next)
 611                 return;
 612         state_t prev = win->state;
 613         win->state = next;
 614         wm_handle_state(win, prev, next);
 615 }
 616
 617 /**********************
 618  * X11 Event Handlers *
 619  **********************/
 620
 621 /* Specific events */
 622 static void on_key_event(xcb_key_press_event_t *event, int up)
 623 {
 624         printf("on_key_event:         xcb=%-8u\n", event->event);
 625         xcb_window_t focus = do_get_input_focus();
 626         event_t ev = keycode_to_event(event->detail);
 627         send_event_info(ev, event->state, up, &event->root_x,
 628                 event->root, focus, event->child);
 629 }
 630
 631 static void on_button_event(xcb_button_press_event_t *event, int up)
 632 {
 633         printf("on_button_event:      xcb=%-8u\n", event->event);
 634         event_t ev = button_to_event(event->detail);
 635         if (!send_event_info(ev, event->state, up, &event->root_x,
 636                                 event->root, event->event, event->child))
 637                 xcb_allow_events(conn, XCB_ALLOW_REPLAY_POINTER, event->time);
 638         else if (!up)
 639                 do_grab_pointer(XCB_EVENT_MASK_POINTER_MOTION |
 640                                 XCB_EVENT_MASK_BUTTON_RELEASE);
 641         else
 642                 do_ungrab_pointer();
 643
 644 }
 645
 646 static void on_motion_notify(xcb_motion_notify_event_t *event)
 647 {
 648         printf("on_motion_notify:     xcb=%-8u - %d,%d / %d.%d\n", event->event,
 649                         event->event_x, event->event_y,
 650                         event->root_x,  event->root_y);
 651         send_pointer(&event->root_x, event->root, event->event, event->child);
 652 }
 653
 654 static void on_enter_notify(xcb_enter_notify_event_t *event)
 655 {
 656         if (event->mode != XCB_NOTIFY_MODE_NORMAL)
 657                 return;
 658         printf("on_enter_notify:      xcb=%-8u\n", event->event);
 659         send_event_info(EV_ENTER, event->state, 0, &event->root_x,
 660                 event->root, event->event, event->child);
 661 }
 662
 663 static void on_leave_notify(xcb_leave_notify_event_t *event)
 664 {
 665         if (event->mode != XCB_NOTIFY_MODE_NORMAL)
 666                 return;
 667         printf("on_leave_notify:      xcb=%-8u\n", event->event);
 668         send_event_info(EV_LEAVE, event->state, 0, &event->root_x,
 669                 event->root, event->event, event->child);
 670 }
 671
 672 static void on_focus_in(xcb_focus_in_event_t *event)
 673 {
 674         if (event->mode != XCB_NOTIFY_MODE_NORMAL &&
 675             event->mode != XCB_NOTIFY_MODE_WHILE_GRABBED)
 676                 return;
 677         printf("on_focus_in:          xcb=%-8u mode=%d\n", event->event, event->mode);
 678         xcb_change_window_attributes(conn, event->event,
 679                         XCB_CW_BORDER_PIXEL, &clr_focus);
 680         if (event->mode == XCB_NOTIFY_MODE_NORMAL)
 681                 send_event(EV_FOCUS, event->event);
 682 }
 683
 684 static void on_focus_out(xcb_focus_out_event_t *event)
 685 {
 686         if (event->mode != XCB_NOTIFY_MODE_NORMAL &&
 687             event->mode != XCB_NOTIFY_MODE_WHILE_GRABBED)
 688                 return;
 689         printf("on_focus_out:         xcb=%-8u mode=%d\n", event->event, event->mode);
 690         xcb_change_window_attributes(conn, event->event,
 691                         XCB_CW_BORDER_PIXEL, &clr_unfocus);
 692         if (event->mode == XCB_NOTIFY_MODE_NORMAL)
 693                 send_event(EV_UNFOCUS, event->event);
 694 }
 695
 696 static void on_create_notify(xcb_create_notify_event_t *event)
 697 {
 698         printf("on_create_notify:     xcb=%-8u\n", event->window);
 699
 700         win_t *win = win_new(event->window);
 701
 702         win->x = event->x;
 703         win->y = event->y;
 704         win->w = event->width;
 705         win->h = event->height;
 706
 707         if (!event->override_redirect)
 708                 send_manage(win, 1);
 709 }
 710
 711 static void on_destroy_notify(xcb_destroy_notify_event_t *event)
 712 {
 713         win_t *win = win_get(event->window);
 714         printf("on_destroy_notify:    xcb=%-8u -> win=%p\n",
 715                         event->window, win);
 716         if (!win) return;
 717
 718         send_manage(win, 0);
 719         tdelete(win, &cache, win_cmp);
 720         win_free(win);
 721 }
 722
 723 static void on_unmap_notify(xcb_unmap_notify_event_t *event)
 724 {
 725         win_t *win = win_get(event->window);
 726         printf("on_unmap_notify:      xcb=%-8u -> win=%p\n",
 727                         event->window, win);
 728         if (!win) return;
 729
 730         win_del_strut(win);
 731         send_state(win, ST_HIDE);
 732 }
 733
 734 static void on_map_notify(xcb_map_notify_event_t *event)
 735 {
 736         win_t *win = win_get(event->window);
 737         printf("on_map_notify:        xcb=%-8u -> win=%p\n",
 738                         event->window, win);
 739         if (!win) return;
 740
 741         send_state(win, ST_SHOW);
 742 }
 743
 744 static void on_map_request(xcb_map_request_event_t *event)
 745 {
 746         win_t *win = win_get(event->window);
 747         printf("on_map_request:       xcb=%-8u -> win=%p\n",
 748                         event->window, win);
 749         if (!win) return;
 750
 751         if (do_get_strut(win->sys->xcb, &win->sys->strut))
 752                 win_add_strut(win);
 753         send_state(win, ST_SHOW);
 754         xcb_map_window(conn, win->sys->xcb);
 755         sys_move(win, win->x, win->y, win->w, win->h);
 756 }
 757
 758 static void on_configure_request(xcb_configure_request_event_t *event)
 759 {
 760         win_t *win = win_get(event->window);
 761         printf("on_configure_request: xcb=%-8u -> win=%p -- %dx%d @ %d,%d\n",
 762                         event->window, win,
 763                         event->width, event->height,
 764                         event->x, event->y);
 765         if (!win) return;
 766
 767         if (!win->sys->managed) {
 768                 win->x = event->x;
 769                 win->y = event->y;
 770                 win->w = event->width;
 771                 win->h = event->height;
 772         }
 773
 774         xcb_configure_notify_event_t resp = {
 775                 .response_type = XCB_CONFIGURE_NOTIFY,
 776                 .event         = win->sys->xcb,
 777                 .window        = win->sys->xcb,
 778                 .x             = win->x,
 779                 .y             = win->y,
 780                 .width         = win->w,
 781                 .height        = win->h,
 782                 .border_width  = border,
 783         };
 784
 785         xcb_send_event(conn, 0, win->sys->xcb,
 786                         XCB_EVENT_MASK_STRUCTURE_NOTIFY,
 787                         (const char *)&resp);
 788 }
 789
 790 static void on_client_message(xcb_client_message_event_t *event)
 791 {
 792         printf("on_client_message: xcb=%-8u\n", event->window);
 793         if (event->window         == control   &&
 794             event->type           == wm_protos &&
 795             event->data.data32[0] == wm_delete)
 796                 running = 0;
 797 }
 798
 799 /* Generic Event */
 800 static void on_event(xcb_generic_event_t *event)
 801 {
 802         int type = XCB_EVENT_RESPONSE_TYPE(event);
 803
 804         switch (type) {
 805                 /* Input handling */
 806                 case XCB_KEY_PRESS:
 807                         on_key_event((xcb_key_press_event_t *)event, 0);
 808                         break;
 809                 case XCB_KEY_RELEASE:
 810                         on_key_event((xcb_key_release_event_t *)event, 1);
 811                         break;
 812                 case XCB_BUTTON_PRESS:
 813                         on_button_event((xcb_button_press_event_t *)event, 0);
 814                         break;
 815                 case XCB_BUTTON_RELEASE:
 816                         on_button_event((xcb_button_release_event_t *)event, 1);
 817                         break;
 818                 case XCB_MOTION_NOTIFY:
 819                         on_motion_notify((xcb_motion_notify_event_t *)event);
 820                         break;
 821                 case XCB_ENTER_NOTIFY:
 822                         on_enter_notify((xcb_enter_notify_event_t *)event);
 823                         break;
 824                 case XCB_LEAVE_NOTIFY:
 825                         on_leave_notify((xcb_leave_notify_event_t *)event);
 826                         break;
 827                 case XCB_FOCUS_IN:
 828                         on_focus_in((xcb_focus_in_event_t *)event);
 829                         break;
 830                 case XCB_FOCUS_OUT:
 831                         on_focus_out((xcb_focus_out_event_t *)event);
 832                         break;
 833
 834                 /* Window management */
 835                 case XCB_CREATE_NOTIFY:
 836                         on_create_notify((xcb_create_notify_event_t *)event);
 837                         break;
 838                 case XCB_DESTROY_NOTIFY:
 839                         on_destroy_notify((xcb_destroy_notify_event_t *)event);
 840                         break;
 841                 case XCB_UNMAP_NOTIFY:
 842                         on_unmap_notify((xcb_unmap_notify_event_t *)event);
 843                         break;
 844                 case XCB_MAP_NOTIFY:
 845                         on_map_notify((xcb_map_notify_event_t *)event);
 846                         break;
 847                 case XCB_MAP_REQUEST:
 848                         on_map_request((xcb_map_request_event_t *)event);
 849                         break;
 850                 case XCB_CONFIGURE_REQUEST:
 851                         on_configure_request((xcb_configure_request_event_t *)event);
 852                         break;
 853                 case XCB_CLIENT_MESSAGE:
 854                         on_client_message((xcb_client_message_event_t *)event);
 855                         break;
 856
 857                 /* Unknown events */
 858                 default:
 859                         printf("on_event: %d:%02X -> %s\n",
 860                                 XCB_EVENT_SENT(event) != 0,
 861                                 XCB_EVENT_RESPONSE_TYPE(event),
 862                                 xcb_event_get_label(type) ?: "unknown_event");
 863                         break;
 864         }
 865 }
 866
 867 /********************
 868  * System functions *
 869  ********************/
 870
 871 void sys_move(win_t *win, int x, int y, int w, int h)
 872 {
 873         printf("sys_move:  %p - %dx%d @ %d,%d\n",
 874                         win, w, h, x, y);
 875
 876         int b = 2*border;
 877
 878         win->x = x;
 879         win->y = y;
 880         win->w = MAX(w,1+b);
 881         win->h = MAX(h,1+b);
 882         w      = MAX(w-b,1);
 883         h      = MAX(h-b,1);
 884
 885         do_configure_window(win->sys->xcb, x, y, w, h, -1, -1, -1);
 886 }
 887
 888 void sys_raise(win_t *win)
 889 {
 890         printf("sys_raise: %p\n", win);
 891
 892         uint16_t mask = XCB_CONFIG_WINDOW_STACK_MODE;
 893         uint32_t list = XCB_STACK_MODE_ABOVE;
 894
 895         xcb_configure_window(conn, win->sys->xcb, mask, &list);
 896 }
 897
 898 void sys_focus(win_t *win)
 899 {
 900         printf("sys_focus: %p\n", win);
 901         xcb_window_t xcb = win ? win->sys->xcb : root;
 902
 903         xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT,
 904                         xcb, XCB_CURRENT_TIME);
 905 }
 906
 907 void sys_show(win_t *win, state_t state)
 908 {
 909         printf("sys_show:  %p - %s -> %s\n", win,
 910                         state_map[win->state], state_map[state]);
 911         xcb_window_t xcb = win ? win->sys->xcb : root;
 912
 913         /* Find screen */
 914         win_t *screen = NULL;
 915         if (state == ST_FULL || state == ST_MAX) {
 916                 for (list_t *cur = screens; cur; cur = cur->next) {
 917                         screen = cur->data;
 918                         if (win->x >= screen->x && win->x <= screen->x+screen->w &&
 919                             win->y >= screen->y && win->y <= screen->y+screen->h)
 920                                 break;
 921                 }
 922         }
 923
 924         /* Change window state */
 925         switch (state) {
 926                 case ST_HIDE:
 927                         xcb_unmap_window(conn, xcb);
 928                         break;
 929
 930                 case ST_SHOW:
 931                         xcb_map_window(conn, xcb);
 932                         do_configure_window(xcb, win->x, win->y,
 933                                         MAX(win->w - 2*border, 1),
 934                                         MAX(win->h - 2*border, 1),
 935                                         border, -1, -1);
 936                         break;
 937
 938                 case ST_FULL:
 939                         xcb_map_window(conn, xcb);
 940                         do_configure_window(xcb, screen->x, screen->y, screen->w, screen->h,
 941                                         0, -1, XCB_STACK_MODE_ABOVE);
 942                         xcb_circulate_window(conn, XCB_CIRCULATE_RAISE_LOWEST, xcb);
 943                         break;
 944
 945                 case ST_MAX:
 946                         xcb_map_window(conn, xcb);
 947                         do_configure_window(xcb, screen->x, screen->y,
 948                                         MAX(screen->w - 2*border, 1),
 949                                         MAX(screen->h - 2*border, 1),
 950                                         border, -1, XCB_STACK_MODE_ABOVE);
 951                         break;
 952
 953                 case ST_SHADE:
 954                         xcb_map_window(conn, xcb);
 955                         do_configure_window(xcb, -1, -1, -1, stack,
 956                                         border, -1, -1);
 957                         break;
 958
 959                 case ST_ICON:
 960                         xcb_map_window(conn, xcb);
 961                         do_configure_window(xcb, -1, -1, 100, 100,
 962                                         border, -1, -1);
 963                         break;
 964
 965                 case ST_CLOSE:
 966                         if (!do_client_message(xcb, wm_delete))
 967                                 xcb_kill_client(conn, xcb);
 968                         break;
 969         }
 970
 971         /* Update state */
 972         win->state = state;
 973 }
 974
 975 void sys_watch(win_t *win, event_t ev, mod_t mod)
 976 {
 977         printf("sys_watch: %p - 0x%X,0x%X\n", win, ev, mod2int(mod));
 978         xcb_window_t      xcb  = win ? win->sys->xcb     : root;
 979         xcb_event_mask_t *mask = win ? &win->sys->events : &events;
 980         xcb_mod_mask_t    mods = 0;
 981         xcb_button_t      btn  = 0;
 982         xcb_keycode_t    *code = 0;
 983
 984         switch (ev) {
 985                 case EV_ENTER:
 986                         *mask |= XCB_EVENT_MASK_ENTER_WINDOW;
 987                         xcb_change_window_attributes(conn, xcb, XCB_CW_EVENT_MASK, mask);
 988                         break;
 989
 990                 case EV_LEAVE:
 991                         *mask |= XCB_EVENT_MASK_LEAVE_WINDOW;
 992                         xcb_change_window_attributes(conn, xcb, XCB_CW_EVENT_MASK, mask);
 993                         break;
 994
 995                 case EV_FOCUS:
 996                 case EV_UNFOCUS:
 997                         *mask |= XCB_EVENT_MASK_FOCUS_CHANGE;
 998                         xcb_change_window_attributes(conn, xcb, XCB_CW_EVENT_MASK, mask);
 999                         break;
1000
1001                 case EV_MOUSE0...EV_MOUSE7:
1002                         btn    = event_to_button(ev);
1003                         mods   = mod_to_mask(mod);
1004                         *mask |= mod.up ? XCB_EVENT_MASK_BUTTON_RELEASE
1005                                         : XCB_EVENT_MASK_BUTTON_PRESS;
1006                         xcb_grab_button(conn, 0, xcb, *mask,
1007                                         XCB_GRAB_MODE_ASYNC,
1008                                         XCB_GRAB_MODE_ASYNC,
1009                                         0, 0, btn, mods);
1010                         break;
1011
1012                 default:
1013                         code = event_to_keycodes(ev);
1014                         mods = mod_to_mask(mod);
1015                         for (int i = 0; code && code[i] != XCB_NO_SYMBOL; i++)
1016                                 xcb_grab_key(conn, 1, xcb, mods, code[i],
1017                                                 XCB_GRAB_MODE_ASYNC,
1018                                                 XCB_GRAB_MODE_ASYNC);
1019                         free(code);
1020                         break;
1021         }
1022 }
1023
1024 void sys_unwatch(win_t *win, event_t ev, mod_t mod)
1025 {
1026         printf("sys_unwatch: %p - 0x%X,0x%X\n", win, ev, mod2int(mod));
1027 }
1028
1029 list_t *sys_info(void)
1030 {
1031         printf("sys_info\n");
1032
1033         if (screens == NULL && do_xinerama_check()) {
1034                 /* Add Xinerama screens */
1035                 int ninfo = 0;
1036                 xcb_xinerama_screen_info_t *info = NULL;
1037                 void *reply = do_query_screens(&info, &ninfo);
1038                 for (int i = 0; i < ninfo; i++) {
1039                         win_t *screen = new0(win_t);
1040
1041                         screen->x = info[i].x_org;
1042                         screen->y = info[i].y_org;
1043                         screen->w = info[i].width;
1044                         screen->h = info[i].height;
1045
1046                         screens = list_insert(NULL, screen);
1047
1048                         printf("sys_info: xinerama screen - %dx%d @ %d,%d\n",
1049                                         screen->w, screen->h,
1050                                         screen->x, screen->y);
1051                 }
1052                 free(reply);
1053         }
1054
1055         if (screens == NULL) {
1056                 /* No xinerama support */
1057                 const xcb_setup_t *setup = xcb_get_setup(conn);
1058                 xcb_screen_t      *geom  = xcb_setup_roots_iterator(setup).data;
1059
1060                 win_t *screen = new0(win_t);
1061
1062                 screen->w = geom->width_in_pixels;
1063                 screen->h = geom->height_in_pixels;
1064
1065                 screens = list_insert(NULL, screen);
1066
1067                 printf("sys_info: root screen - %dx%d\n",
1068                                 screen->w, screen->h);
1069         }
1070
1071         return screens;
1072 }
1073
1074 void sys_init(void)
1075 {
1076         printf("sys_init\n");
1077
1078         xcb_void_cookie_t cookie;
1079         xcb_generic_error_t *err;
1080
1081         /* Load configuration */
1082         stack      = conf_get_int("main.stack",      stack);
1083         border     = conf_get_int("main.border",     border);
1084         no_capture = conf_get_int("main.no-capture", no_capture);
1085
1086         /* Connect to display */
1087         if (!(conn = xcb_connect(NULL, NULL)))
1088                 error("xcb connect failed");
1089         if (xcb_connection_has_error(conn))
1090                 error("xcb connection has errors");
1091
1092         /* Get root window */
1093         const xcb_setup_t     *setup = xcb_get_setup(conn);
1094         xcb_screen_iterator_t  iter  = xcb_setup_roots_iterator(setup);
1095         root     = iter.data->root;
1096         colormap = iter.data->default_colormap;
1097
1098         /* Request substructure redirect */
1099         events = XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT |
1100                  XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY;
1101         cookie = xcb_change_window_attributes_checked(conn, root,
1102                         XCB_CW_EVENT_MASK, &events);
1103         if ((err = xcb_request_check(conn, cookie)))
1104                 error("another window manager is already running");
1105
1106         /* Setup X Atoms */
1107         wm_protos = do_intern_atom("WM_PROTOCOLS");
1108         wm_delete = do_intern_atom("WM_DELETE_WINDOW");
1109         if (!wm_protos || !wm_delete)
1110                 error("unable to setup atoms");
1111
1112         /* Setup EWMH connection */
1113         if (!do_ewmh_init_atoms())
1114                 error("ewmh setup failed");
1115
1116         /* Set EWMH wm window */
1117         uint32_t override = 1;
1118         control = xcb_generate_id(conn);
1119         printf("control window: %d\n", control);
1120         cookie  = xcb_create_window_checked(conn, 0, control, root,
1121                         0, 0, 1, 1, 0, 0, 0,
1122                         XCB_CW_OVERRIDE_REDIRECT, &override);
1123         if ((err = xcb_request_check(conn, cookie)))
1124                 error("can't create control window");
1125         cookie = xcb_ewmh_set_wm_name_checked(&ewmh, control, 5, "wmpus");
1126         if ((err = xcb_request_check(conn, cookie)))
1127                 error("can't set wm name");
1128         cookie = xcb_ewmh_set_supporting_wm_check_checked(&ewmh, root, control);
1129         if ((err = xcb_request_check(conn, cookie)))
1130                 error("can't set control window");
1131
1132         /* Setup for for ST_CLOSE */
1133         xcb_set_close_down_mode(conn, XCB_CLOSE_DOWN_DESTROY_ALL);
1134
1135         /* Allocate key symbols */
1136         if (!(keysyms = xcb_key_symbols_alloc(conn)))
1137                 error("cannot allocate key symbols");
1138
1139         /* Read color information */
1140         clr_focus   = do_alloc_color(0xFF6060);
1141         clr_unfocus = do_alloc_color(0xD8D8FF);
1142         clr_urgent  = do_alloc_color(0xFF0000);
1143 }
1144
1145 void sys_run(void)
1146 {
1147         printf("sys_run\n");
1148
1149         /* Add each initial window */
1150         if (!no_capture) {
1151                 int nkids = 0;
1152                 xcb_window_t *kids = NULL;
1153                 void *reply = do_query_tree(root, &kids, &nkids);
1154                 for(int i = 0; i < nkids; i++) {
1155                         int override=0, mapped=0;
1156                         if (kids[i] == control)
1157                                 continue;
1158                         win_t *win = win_new(kids[i]);
1159                         if (do_get_strut(win->sys->xcb, &win->sys->strut))
1160                                 win_add_strut(win);
1161                         do_get_geometry(kids[i], &win->x, &win->y, &win->w, &win->h);
1162                         do_get_window_attributes(kids[i], &override, &mapped);
1163                         printf("  found %-8u %dx%d @ %d,%d --%s%s\n", kids[i],
1164                                         win->w, win->h, win->x, win->y,
1165                                         override ? " override" : "",
1166                                         mapped   ? " mapped"   : "");
1167                         if (!override)
1168                                 send_manage(win, 1);
1169                         if (mapped)
1170                                 send_state(win, ST_SHOW);
1171                 }
1172                 free(reply);
1173                 xcb_flush(conn);
1174         }
1175
1176         /* Main loop */
1177         running = 1;
1178         while (running)
1179         {
1180                 int status;
1181                 xcb_generic_event_t *event;
1182                 if (!(event = xcb_wait_for_event(conn)))
1183                         break;
1184                 on_event(event);
1185                 free(event);
1186                 if (!(status = xcb_flush(conn)))
1187                         break;
1188         }
1189 }
1190
1191 void sys_exit(void)
1192 {
1193         printf("sys_exit\n");
1194
1195         xcb_client_message_event_t msg = {
1196                 .response_type  = XCB_CLIENT_MESSAGE,
1197                 .format         = 32,
1198                 .window         = control,
1199                 .type           = wm_protos,
1200                 .data.data32[0] = wm_delete,
1201                 .data.data32[1] = XCB_CURRENT_TIME,
1202         };
1203         xcb_send_event(conn, 0, control, XCB_EVENT_MASK_NO_EVENT,
1204                         (const char *)&msg);
1205         xcb_flush(conn);
1206 }
1207
1208 void sys_free(void)
1209 {
1210         printf("sys_free\n");
1211
1212         xcb_void_cookie_t cookie;
1213         xcb_generic_error_t *err;
1214
1215         /* unregister wm */
1216         cookie = xcb_delete_property_checked(conn, root,
1217                         ewmh._NET_SUPPORTING_WM_CHECK);
1218         if ((err = xcb_request_check(conn, cookie)))
1219                 warn("can't remove control window");
1220
1221         cookie = xcb_destroy_window_checked(conn, control);
1222         if ((err = xcb_request_check(conn, cookie)))
1223                 warn("can't destroy control window");
1224
1225         /* close connection */
1226         xcb_ewmh_connection_wipe(&ewmh);
1227         xcb_key_symbols_free(keysyms);
1228         xcb_disconnect(conn);
1229
1230         /* free local data */
1231         while (screens)
1232                 screens = list_remove(screens, screens, 1);
1233         tdestroy(cache, (void(*)(void*))win_free);
1234 }