Pileus Git - wmpus/blob - sys-x11.c

   1 /*
   2  * Copyright (c) 2011-2012, 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
  21 #include <X11/Xlib.h>
  22 #include <X11/Xproto.h>
  23 #include <X11/Xatom.h>
  24 #include <X11/keysym.h>
  25 #include <X11/extensions/Xinerama.h>
  26
  27 #include "util.h"
  28 #include "conf.h"
  29 #include "sys.h"
  30 #include "wm.h"
  31
  32 /* Configuration */
  33 static int border     = 2;
  34 static int no_capture = 0;
  35
  36 /* Internal structures */
  37 struct win_sys {
  38         Window   xid;
  39         Display *dpy;
  40         struct {
  41                 int left, right, top, bottom;
  42         } strut;
  43 };
  44
  45 typedef struct {
  46         event_t ev;
  47         int     sym;
  48 } event_map_t;
  49
  50 typedef enum {
  51         WM_PROTO, WM_FOCUS, WM_DELETE,
  52         NET_STATE, NET_FULL, NET_STRUT,
  53         NATOMS
  54 } atom_t;
  55
  56 typedef enum {
  57         CLR_FOCUS, CLR_UNFOCUS, CLR_URGENT, NCOLORS
  58 } color_t;
  59
  60 /* Global data */
  61 static int   running;
  62 static void *cache;
  63 static Atom atoms[NATOMS];
  64 static int (*xerrorxlib)(Display *, XErrorEvent *);
  65 static unsigned long colors[NCOLORS];
  66 static list_t *screens;
  67 static list_t *struts;
  68
  69 /* Conversion functions */
  70 static event_map_t ev2sym[] = {
  71         {EV_LEFT    , XK_Left },
  72         {EV_RIGHT   , XK_Right},
  73         {EV_UP      , XK_Up   },
  74         {EV_DOWN    , XK_Down },
  75         {EV_HOME    , XK_Home },
  76         {EV_END     , XK_End  },
  77         {EV_PAGEUP  , XK_Prior},
  78         {EV_PAGEDOWN, XK_Next },
  79         {EV_F1      , XK_F1   },
  80         {EV_F2      , XK_F2   },
  81         {EV_F3      , XK_F3   },
  82         {EV_F4      , XK_F4   },
  83         {EV_F5      , XK_F5   },
  84         {EV_F6      , XK_F6   },
  85         {EV_F7      , XK_F7   },
  86         {EV_F8      , XK_F8   },
  87         {EV_F9      , XK_F9   },
  88         {EV_F10     , XK_F10  },
  89         {EV_F11     , XK_F11  },
  90         {EV_F12     , XK_F12  },
  91 };
  92
  93 /* - Modifiers */
  94 static mod_t x2mod(unsigned int state, int up)
  95 {
  96         return (mod_t){
  97                .alt   = !!(state & Mod1Mask   ),
  98                .ctrl  = !!(state & ControlMask),
  99                .shift = !!(state & ShiftMask  ),
 100                .win   = !!(state & Mod4Mask   ),
 101                .up    = up,
 102         };
 103 }
 104
 105 static unsigned int mod2x(mod_t mod)
 106 {
 107         return (mod.alt   ? Mod1Mask    : 0)
 108              | (mod.ctrl  ? ControlMask : 0)
 109              | (mod.shift ? ShiftMask   : 0)
 110              | (mod.win   ? Mod4Mask    : 0);
 111 }
 112
 113 /* - Keycodes */
 114 static event_t xk2ev(KeySym sym)
 115 {
 116         event_map_t *em = map_getr(ev2sym,sym);
 117         return em ? em->ev : sym;
 118 }
 119
 120 static KeySym ev2xk(event_t ev)
 121 {
 122         event_map_t *em = map_get(ev2sym,ev);
 123         return em ? em->sym : ev;
 124 }
 125
 126 static event_t xb2ev(int btn)
 127 {
 128         return btn + EV_MOUSE0;
 129 }
 130
 131 static int ev2xb(event_t ev)
 132 {
 133         return ev - EV_MOUSE0;
 134 }
 135
 136 /* - Pointers */
 137 static ptr_t x2ptr(XEvent *xe)
 138 {
 139         XKeyEvent *xke = &xe->xkey;
 140         return (ptr_t){xke->x, xke->y, xke->x_root, xke->y_root};
 141 }
 142
 143 static Window getfocus(win_t *root, XEvent *xe)
 144 {
 145         int revert;
 146         Window focus = PointerRoot;
 147         if (xe->type == KeyPress || xe->type == KeyRelease)
 148                 XGetInputFocus(root->sys->dpy, &focus, &revert);
 149         if (focus == PointerRoot)
 150                 focus = xe->xkey.subwindow;
 151         if (focus == None)
 152                 focus = xe->xkey.window;
 153         return focus;
 154 }
 155
 156 /* Strut functions
 157  *   Struts are spaces at the edges of the screen that are used by
 158  *   toolbars and statusbars such as dzen. */
 159 static int strut_copy(win_t *to, win_t *from, int scale)
 160 {
 161         int left   = from->sys->strut.left;
 162         int right  = from->sys->strut.right;
 163         int top    = from->sys->strut.top;
 164         int bottom = from->sys->strut.bottom;
 165         if (left == 0 && right == 0 && top == 0 && bottom == 0)
 166                 return 0;
 167         to->x += scale*(left      );
 168         to->y += scale*(top       );
 169         to->w -= scale*(left+right);
 170         to->h -= scale*(top+bottom);
 171         to->sys->strut.left   += scale*left;
 172         to->sys->strut.right  += scale*right;
 173         to->sys->strut.top    += scale*top;
 174         to->sys->strut.bottom += scale*bottom;
 175         return 1;
 176 }
 177
 178 static int strut_add(win_t *root, win_t *win)
 179 {
 180         /* Get X11 strut data */
 181         Atom ret_type;
 182         int ret_size;
 183         unsigned long ret_items, bytes_left;
 184         unsigned char *xdata;
 185         int status = XGetWindowProperty(win->sys->dpy, win->sys->xid,
 186                         atoms[NET_STRUT], 0L, 4L, False, XA_CARDINAL,
 187                         &ret_type, &ret_size, &ret_items, &bytes_left, &xdata);
 188         if (status != Success || ret_size != 32 || ret_items != 4)
 189                 return 0;
 190
 191         win->sys->strut.left   = ((int*)xdata)[0];
 192         win->sys->strut.right  = ((int*)xdata)[1];
 193         win->sys->strut.top    = ((int*)xdata)[2];
 194         win->sys->strut.bottom = ((int*)xdata)[3];
 195         struts = list_insert(struts, win);
 196         for (list_t *cur = screens; cur; cur = cur->next)
 197                 strut_copy(cur->data, win, 1);
 198         return strut_copy(root, win, 1);
 199 }
 200
 201 static int strut_del(win_t *root, win_t *win)
 202 {
 203         list_t *lwin = list_find(struts, win);
 204         if (lwin)
 205                 struts = list_remove(struts, lwin, 0);
 206         for (list_t *cur = screens; cur; cur = cur->next)
 207                 strut_copy(cur->data, win, -1);
 208         return strut_copy(root, win, -1);
 209 }
 210
 211 /* Window functions */
 212 static win_t *win_new(Display *dpy, Window xid)
 213 {
 214         XWindowAttributes attr;
 215         if (XGetWindowAttributes(dpy, xid, &attr))
 216                 if (attr.override_redirect)
 217                         return NULL;
 218         win_t *win    = new0(win_t);
 219         win->x        = attr.x;
 220         win->y        = attr.y;
 221         win->w        = attr.width;
 222         win->h        = attr.height;
 223         win->sys      = new0(win_sys_t);
 224         win->sys->dpy = dpy;
 225         win->sys->xid = xid;
 226         printf("win_new: %p = %p, %d (%d,%d %dx%d)\n",
 227                         win, dpy, (int)xid,
 228                         win->x, win->y, win->w, win->h);
 229         return win;
 230 }
 231
 232 static int win_cmp(const void *_a, const void *_b)
 233 {
 234         const win_t *a = _a, *b = _b;
 235         if (a->sys->dpy < b->sys->dpy) return -1;
 236         if (a->sys->dpy > b->sys->dpy) return  1;
 237         if (a->sys->xid < b->sys->xid) return -1;
 238         if (a->sys->xid > b->sys->xid) return  1;
 239         return 0;
 240 }
 241
 242 static win_t *win_find(Display *dpy, Window xid, int create)
 243 {
 244         if (!dpy || !xid)
 245                 return NULL;
 246         //printf("win_find: %p, %d\n", dpy, (int)xid);
 247         win_sys_t sys = {.dpy=dpy, .xid=xid};
 248         win_t     tmp = {.sys=&sys};
 249         win_t **old = NULL, *new = NULL;
 250         if ((old = tfind(&tmp, &cache, win_cmp)))
 251                 return *old;
 252         if (create && (new = win_new(dpy,xid)))
 253                 tsearch(new, &cache, win_cmp);
 254         return new;
 255 }
 256
 257 static void win_free(win_t *win)
 258 {
 259         free(win->sys);
 260         free(win);
 261 }
 262
 263 static void win_remove(win_t *win)
 264 {
 265         tdelete(win, &cache, win_cmp);
 266         win_free(win);
 267 }
 268
 269 static int win_viewable(win_t *win)
 270 {
 271         XWindowAttributes attr;
 272         if (XGetWindowAttributes(win->sys->dpy, win->sys->xid, &attr))
 273                 return attr.map_state == IsViewable;
 274         else
 275                 return True;
 276 }
 277
 278 static int win_msg(win_t *win, atom_t msg)
 279 {
 280         int n, found = 0;
 281         Atom *protos;
 282         if (!XGetWMProtocols(win->sys->dpy, win->sys->xid, &protos, &n))
 283                 return 0;
 284
 285         while (!found && n--)
 286                 found = protos[n] == atoms[msg];
 287         XFree(protos);
 288         if (!found)
 289                 return 0;
 290
 291         XSendEvent(win->sys->dpy, win->sys->xid, False, NoEventMask, &(XEvent){
 292                 .type                 = ClientMessage,
 293                 .xclient.window       = win->sys->xid,
 294                 .xclient.message_type = atoms[WM_PROTO],
 295                 .xclient.format       = 32,
 296                 .xclient.data.l[0]    = atoms[msg],
 297                 .xclient.data.l[1]    = CurrentTime,
 298         });
 299         return 1;
 300 }
 301
 302 static Atom win_prop(win_t *win, atom_t prop)
 303 {
 304         int format;
 305         unsigned long nitems, bytes;
 306         unsigned char *buf = NULL;
 307         Atom atom, type = XA_ATOM;
 308         if (XGetWindowProperty(win->sys->dpy, win->sys->xid, atoms[prop],
 309                         0L, sizeof(Atom), False, type, &type, &format, &nitems, &bytes, &buf) || !buf)
 310                 return 0;
 311         atom = *(Atom *)buf;
 312         XFree(buf);
 313         return atom;
 314 }
 315
 316 /* Drawing functions */
 317 static unsigned long get_color(Display *dpy, const char *name)
 318 {
 319         XColor color;
 320         int screen = DefaultScreen(dpy);
 321         Colormap cmap = DefaultColormap(dpy, screen);
 322         XAllocNamedColor(dpy, cmap, name, &color, &color);
 323         return color.pixel;
 324 }
 325
 326 /* Callbacks */
 327 static void process_event(int type, XEvent *xe, win_t *root)
 328 {
 329         Display  *dpy = root->sys->dpy;
 330         win_t *win = NULL;
 331         //printf("event: %d\n", type);
 332
 333         /* Common data for all these events ... */
 334         ptr_t ptr = {}; mod_t mod = {};
 335         if (type == KeyPress    || type == KeyRelease    ||
 336             type == ButtonPress || type == ButtonRelease ||
 337             type == MotionNotify) {
 338                 Window xid = getfocus(root, xe);
 339                 if (!(win = win_find(dpy,xid,0)))
 340                         return;
 341                 //printf("button-press %p\n", win);
 342                 ptr = x2ptr(xe);
 343                 mod = x2mod(xe->xkey.state, type==KeyRelease||type==ButtonRelease);
 344         }
 345
 346         /* Split based on event */
 347         if (type == KeyPress) {
 348                 while (XCheckTypedEvent(dpy, KeyPress, xe));
 349                 KeySym sym = XKeycodeToKeysym(dpy, xe->xkey.keycode, 0);
 350                 printf("got xe %c %hhx\n", xk2ev(sym), mod2int(mod));
 351                 wm_handle_event(win, xk2ev(sym), mod, ptr);
 352         }
 353         else if (type == KeyRelease) {
 354                 //printf("release: %d\n", type);
 355         }
 356         else if (type == ButtonPress) {
 357                 if (wm_handle_event(win, xb2ev(xe->xbutton.button), mod, ptr)) {
 358                         //printf("grab pointer\n");
 359                         XGrabPointer(dpy, xe->xbutton.root, True, PointerMotionMask|ButtonReleaseMask,
 360                                         GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
 361                 } else {
 362                         //printf("allow events\n");
 363                         XAllowEvents(win->sys->dpy, ReplayPointer, xe->xbutton.time);
 364                 }
 365         }
 366         else if (type == ButtonRelease) {
 367                 XUngrabPointer(dpy, CurrentTime);
 368                 wm_handle_event(win, xb2ev(xe->xbutton.button), mod, ptr);
 369         }
 370         else if (type == MotionNotify) {
 371                 while (XCheckTypedEvent(dpy, MotionNotify, xe));
 372                 wm_handle_ptr(win, ptr);
 373         }
 374         else if (type == EnterNotify || type == LeaveNotify) {
 375                 printf("%s: %d\n", type==EnterNotify?"enter":"leave", type);
 376                 event_t ev = type == EnterNotify ? EV_ENTER : EV_LEAVE;
 377                 if ((win = win_find(dpy,xe->xcrossing.window,0)))
 378                         wm_handle_event(win, ev, MOD(), PTR());
 379         }
 380         else if (type == FocusIn || type == FocusOut) {
 381                 //printf("focus: %d\n", type);
 382                 event_t ev = FocusIn ? EV_FOCUS : EV_UNFOCUS;
 383                 if ((win = win_find(dpy,xe->xfocus.window,0)))
 384                         wm_handle_event(win, ev, MOD(), PTR());
 385         }
 386         else if (type == ConfigureNotify) {
 387                 printf("configure: %d\n", type);
 388         }
 389         else if (type == MapNotify) {
 390                 printf("map: %d\n", type);
 391         }
 392         else if (type == UnmapNotify) {
 393                 if ((win = win_find(dpy,xe->xunmap.window,0)) &&
 394                      win->state != ST_HIDE) {
 395                         if (!strut_del(root, win))
 396                                 wm_remove(win);
 397                         else
 398                                 wm_update();
 399                         win->state = ST_HIDE;
 400                 }
 401         }
 402         else if (type == DestroyNotify) {
 403                 //printf("destroy: %d\n", type);
 404                 if ((win = win_find(dpy,xe->xdestroywindow.window,0)))
 405                         win_remove(win);
 406         }
 407         else if (type == ConfigureRequest) {
 408                 XConfigureRequestEvent *cre = &xe->xconfigurerequest;
 409                 printf("configure_req: %d - %x, (0x%lx) %dx%d @ %d,%d\n",
 410                                 type, (int)cre->window, cre->value_mask,
 411                                 cre->height, cre->width, cre->x, cre->y);
 412                 if ((win = win_find(dpy,xe->xconfigurerequest.window,1))) {
 413                         XSendEvent(dpy, cre->window, False, StructureNotifyMask, &(XEvent){
 414                                 .xconfigure.type              = ConfigureNotify,
 415                                 .xconfigure.display           = win->sys->dpy,
 416                                 .xconfigure.event             = win->sys->xid,
 417                                 .xconfigure.window            = win->sys->xid,
 418                                 .xconfigure.x                 = win->x,
 419                                 .xconfigure.y                 = win->y,
 420                                 .xconfigure.width             = win->w,
 421                                 .xconfigure.height            = win->h,
 422                                 .xconfigure.border_width      = border,
 423                         });
 424                         XSync(win->sys->dpy, False);
 425                 }
 426         }
 427         else if (type == MapRequest) {
 428                 printf("map_req: %d\n", type);
 429                 if ((win = win_find(dpy,xe->xmaprequest.window,1)) &&
 430                      win->state == ST_HIDE) {
 431                         if (win_prop(win, NET_STATE) == atoms[NET_FULL])
 432                                 win->state = ST_FULL;
 433                         XSelectInput(win->sys->dpy, win->sys->xid, PropertyChangeMask);
 434                         if (!strut_add(root, win))
 435                                 wm_insert(win);
 436                         else
 437                                 wm_update();
 438                 } else
 439                         sys_show(win, ST_SHOW);
 440         }
 441         else if (type == ClientMessage) {
 442                 XClientMessageEvent *cme = &xe->xclient;
 443                 printf("msg: %d - %ld %ld,%ld,%ld,%ld,%ld\n",
 444                                 type, cme->message_type,
 445                                 cme->data.l[0], cme->data.l[1], cme->data.l[2],
 446                                 cme->data.l[3], cme->data.l[4]);
 447                 if ((win = win_find(dpy,cme->window,0))     &&
 448                     (cme->message_type == atoms[NET_STATE]) &&
 449                     (cme->data.l[1] == atoms[NET_FULL] ||
 450                      cme->data.l[2] == atoms[NET_FULL])) {
 451                         state_t next = (cme->data.l[0] == 1 || /* _NET_WM_STATE_ADD    */
 452                                        (cme->data.l[0] == 2 && /* _NET_WM_STATE_TOGGLE */
 453                                         win->state != ST_FULL)) ? ST_FULL : ST_SHOW;
 454                         wm_handle_state(win, win->state, next);
 455                         sys_show(win, next);
 456                 }
 457         }
 458         else if (type == PropertyNotify) {
 459                 printf("prop: %d - %d\n", type, xe->xproperty.state);
 460         }
 461         else {
 462                 printf("unknown event: %d\n", type);
 463         }
 464 }
 465
 466 static int xerror(Display *dpy, XErrorEvent *err)
 467 {
 468         if (err->error_code == BadWindow ||
 469             (err->request_code == X_SetInputFocus     && err->error_code == BadMatch   ) ||
 470             (err->request_code == X_PolyText8         && err->error_code == BadDrawable) ||
 471             (err->request_code == X_PolyFillRectangle && err->error_code == BadDrawable) ||
 472             (err->request_code == X_PolySegment       && err->error_code == BadDrawable) ||
 473             (err->request_code == X_ConfigureWindow   && err->error_code == BadMatch   ) ||
 474             (err->request_code == X_GrabButton        && err->error_code == BadAccess  ) ||
 475             (err->request_code == X_GrabKey           && err->error_code == BadAccess  ) ||
 476             (err->request_code == X_CopyArea          && err->error_code == BadDrawable))
 477                 return 0;
 478         if (err->request_code == X_ChangeWindowAttributes && err->error_code == BadAccess)
 479                 error("Another window manager is already running");
 480         return xerrorxlib(dpy, err);
 481 }
 482
 483 static int xnoerror(Display *dpy, XErrorEvent *err)
 484 {
 485         return 0;
 486 }
 487
 488
 489 /********************
 490  * System functions *
 491  ********************/
 492 void sys_move(win_t *win, int x, int y, int w, int h)
 493 {
 494         //printf("sys_move: %p - %d,%d  %dx%d\n", win, x, y, w, h);
 495         int b = 2*border;
 496         win->x = x; win->y = y;
 497         win->w = MAX(w,1+b); win->h = MAX(h,1+b);
 498         w      = MAX(w-b,1); h      = MAX(h-b,1);
 499         XMoveResizeWindow(win->sys->dpy, win->sys->xid, x, y, w, h);
 500
 501         /* Flush events, so moving window doesn't cause re-focus
 502          * There's probably a better way to do this */
 503         XEvent xe;
 504         XSync(win->sys->dpy, False);
 505         while (XCheckMaskEvent(win->sys->dpy, EnterWindowMask|LeaveWindowMask, &xe))
 506                 printf("Skipping enter/leave event\n");
 507 }
 508
 509 void sys_raise(win_t *win)
 510 {
 511         //printf("sys_raise: %p\n", win);
 512         XRaiseWindow(win->sys->dpy, win->sys->xid);
 513         for (list_t *cur = struts; cur; cur = cur->next)
 514                 XRaiseWindow(((win_t*)cur->data)->sys->dpy,
 515                              ((win_t*)cur->data)->sys->xid);
 516 }
 517
 518 void sys_focus(win_t *win)
 519 {
 520         printf("sys_focus: %p\n", win);
 521
 522         /* Set actual focus */
 523         XSetInputFocus(win->sys->dpy, win->sys->xid,
 524                         RevertToPointerRoot, CurrentTime);
 525         win_msg(win, WM_FOCUS);
 526
 527         /* Set border on focused window */
 528         static win_t *last = NULL;
 529         if (last)
 530                 XSetWindowBorder(last->sys->dpy, last->sys->xid, colors[CLR_UNFOCUS]);
 531         XSync(win->sys->dpy, False);
 532         XSetWindowBorder(win->sys->dpy, win->sys->xid, colors[CLR_FOCUS]);
 533         last = win;
 534 }
 535
 536 void sys_show(win_t *win, state_t state)
 537 {
 538         switch (state) {
 539         case ST_HIDE:
 540                 printf("sys_show: hide %p\n", win);
 541                 XUnmapWindow(win->sys->dpy, win->sys->xid);
 542                 break;
 543         case ST_SHOW:
 544                 printf("sys_show: show %p\n", win);
 545                 if (win->state == ST_FULL)
 546                         sys_move(win, win->x, win->y, win->w, win->h);
 547                 XSetWindowBorderWidth(win->sys->dpy, win->sys->xid, border);
 548                 XMapWindow(win->sys->dpy, win->sys->xid);
 549                 XSync(win->sys->dpy, False);
 550                 break;
 551         case ST_MAX:
 552                 printf("sys_show: max %p\n", win);
 553                 XMapWindow(win->sys->dpy, win->sys->xid);
 554                 break;
 555         case ST_FULL:
 556                 printf("sys_show: full %p\n", win);
 557                 win_t *screen = NULL;
 558                 for (list_t *cur = screens; cur; cur = cur->next) {
 559                         screen = cur->data;
 560                         if (win->x >= screen->x && win->x <= screen->x+screen->w &&
 561                             win->y >= screen->y && win->y <= screen->y+screen->h)
 562                                 break;
 563                 }
 564                 XSetWindowBorderWidth(win->sys->dpy, win->sys->xid, 0);
 565                 XMapWindow(win->sys->dpy, win->sys->xid);
 566                 XMoveResizeWindow(win->sys->dpy, win->sys->xid,
 567                         screen->x - screen->sys->strut.left,
 568                         screen->y - screen->sys->strut.top,
 569                         screen->w + screen->sys->strut.left + screen->sys->strut.right,
 570                         screen->h + screen->sys->strut.top  + screen->sys->strut.bottom);
 571                 XRaiseWindow(win->sys->dpy, win->sys->xid);
 572                 break;
 573         case ST_SHADE:
 574                 printf("sys_show: shade %p\n", win);
 575                 XMapWindow(win->sys->dpy, win->sys->xid);
 576                 break;
 577         case ST_ICON:
 578                 printf("sys_show: icon %p\n", win);
 579                 break;
 580         case ST_CLOSE:
 581                 printf("sys_show: close %p\n", win);
 582                 if (!win_msg(win, WM_DELETE)) {
 583                         XGrabServer(win->sys->dpy);
 584                         XSetErrorHandler(xnoerror);
 585                         XSetCloseDownMode(win->sys->dpy, DestroyAll);
 586                         XKillClient(win->sys->dpy, win->sys->xid);
 587                         XSync(win->sys->dpy, False);
 588                         XSetErrorHandler(xerror);
 589                         XUngrabServer(win->sys->dpy);
 590                 }
 591                 XDestroyWindow(win->sys->dpy, win->sys->xid);
 592                 break;
 593         }
 594         win->state = state;
 595 }
 596
 597 void sys_watch(win_t *win, event_t ev, mod_t mod)
 598 {
 599         //printf("sys_watch: %p - %x %hhx\n", win, ev, mod);
 600         XWindowAttributes attr;
 601         XGetWindowAttributes(win->sys->dpy, win->sys->xid, &attr);
 602         long mask = attr.your_event_mask;
 603         if (EV_MOUSE0 <= ev && ev <= EV_MOUSE7)
 604                 XGrabButton(win->sys->dpy, ev2xb(ev), mod2x(mod), win->sys->xid, False,
 605                                 mod.up ? ButtonReleaseMask : ButtonPressMask,
 606                                 GrabModeSync, GrabModeAsync, None, None);
 607         else if (ev == EV_ENTER)
 608                 XSelectInput(win->sys->dpy, win->sys->xid, EnterWindowMask|mask);
 609         else if (ev == EV_LEAVE)
 610                 XSelectInput(win->sys->dpy, win->sys->xid, LeaveWindowMask|mask);
 611         else if (ev == EV_FOCUS || ev == EV_UNFOCUS)
 612                 XSelectInput(win->sys->dpy, win->sys->xid, FocusChangeMask|mask);
 613         else
 614                 XGrabKey(win->sys->dpy, XKeysymToKeycode(win->sys->dpy, ev2xk(ev)),
 615                                 mod2x(mod), win->sys->xid, True, GrabModeAsync, GrabModeAsync);
 616 }
 617
 618 void sys_unwatch(win_t *win, event_t ev, mod_t mod)
 619 {
 620         if (EV_MOUSE0 <= ev && ev <= EV_MOUSE7)
 621                 XUngrabButton(win->sys->dpy, ev2xb(ev), mod2x(mod), win->sys->xid);
 622 }
 623
 624 list_t *sys_info(win_t *win)
 625 {
 626         /* Use global copy of screens so we can add struts */
 627         if (screens == NULL) {
 628                 /* Add Xinerama screens */
 629                 int n = 0;
 630                 XineramaScreenInfo *info = NULL;
 631                 if (XineramaIsActive(win->sys->dpy))
 632                         info = XineramaQueryScreens(win->sys->dpy, &n);
 633                 for (int i = 0; i < n; i++) {
 634                         win_t *screen = new0(win_t);
 635                         screen->x = info[i].x_org;
 636                         screen->y = info[i].y_org;
 637                         screen->w = info[i].width;
 638                         screen->h = info[i].height;
 639                         screen->sys = new0(win_sys_t);
 640                         screens = list_append(screens, screen);
 641                 }
 642         }
 643         if (screens == NULL) {
 644                 /* No xinerama support */
 645                 win_t *screen = new0(win_t);
 646                 *screen = *win;
 647                 screens = list_insert(NULL, screen);
 648         }
 649         return screens;
 650 }
 651
 652 win_t *sys_init(void)
 653 {
 654         Display *dpy;
 655         Window   xid;
 656
 657         /* Load configuration */
 658         border     = conf_get_int("main.border",     border);
 659         no_capture = conf_get_int("main.no-capture", no_capture);
 660
 661         /* Open the display */
 662         if (!(dpy = XOpenDisplay(NULL)))
 663                 error("Unable to get display");
 664         if (!(xid = DefaultRootWindow(dpy)))
 665                 error("Unable to get root window");
 666
 667         /* Setup X11 data */
 668         atoms[WM_PROTO]    = XInternAtom(dpy, "WM_PROTOCOLS",             False);
 669         atoms[WM_FOCUS]    = XInternAtom(dpy, "WM_TAKE_FOCUS",            False);
 670         atoms[WM_DELETE]   = XInternAtom(dpy, "WM_DELETE_WINDOW",         False);
 671         atoms[NET_STATE]   = XInternAtom(dpy, "_NET_WM_STATE",            False);
 672         atoms[NET_FULL]    = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
 673         atoms[NET_STRUT]   = XInternAtom(dpy, "_NET_WM_STRUT",            False);
 674
 675         colors[CLR_FOCUS]   = get_color(dpy, "#a0a0ff");
 676         colors[CLR_UNFOCUS] = get_color(dpy, "#101066");
 677         colors[CLR_URGENT]  = get_color(dpy, "#ff0000");
 678         //printf("colors = #%06lx #%06lx #%06lx\n", colors[0], colors[1], colors[2]);
 679
 680         /* Select window management events */
 681         XSelectInput(dpy, xid, SubstructureRedirectMask|SubstructureNotifyMask);
 682         xerrorxlib = XSetErrorHandler(xerror);
 683
 684         return win_find(dpy, xid, 1);
 685 }
 686
 687 void sys_run(win_t *root)
 688 {
 689         /* Add each initial window */
 690         if (!no_capture) {
 691                 unsigned int nkids;
 692                 Window par, xid, *kids = NULL;
 693                 if (XQueryTree(root->sys->dpy, root->sys->xid,
 694                                         &par, &xid, &kids, &nkids)) {
 695                         for(int i = 0; i < nkids; i++) {
 696                                 win_t *win = win_find(root->sys->dpy, kids[i], 1);
 697                                 if (win && win_viewable(win) && !strut_add(root,win))
 698                                         wm_insert(win);
 699                         }
 700                         XFree(kids);
 701                 }
 702                 wm_update(); // For struts
 703         }
 704
 705         /* Main loop */
 706         running = 1;
 707         while (running)
 708         {
 709                 XEvent xe;
 710                 XNextEvent(root->sys->dpy, &xe);
 711                 process_event(xe.type, &xe, root);
 712         }
 713 }
 714
 715 void sys_exit(void)
 716 {
 717         running = 0;
 718 }
 719
 720 void sys_free(win_t *root)
 721 {
 722         XCloseDisplay(root->sys->dpy);
 723         while (screens) {
 724                 win_free(screens->data);
 725                 screens = list_remove(screens, screens, 0);
 726         }
 727         tdestroy(cache, (void(*)(void*))win_free);
 728 }