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 static int stack      = 25;
  36
  37 /* Internal structures */
  38 struct win_sys {
  39         Window   xid;
  40         Display *dpy;
  41         struct {
  42                 int left, right, top, bottom;
  43         } strut;
  44 };
  45
  46 typedef struct {
  47         event_t ev;
  48         int     sym;
  49 } event_map_t;
  50
  51 typedef enum {
  52         WM_PROTO, WM_FOCUS, WM_DELETE,
  53         NET_STATE, NET_FULL, NET_STRUT,
  54         NET_TYPE, NET_DIALOG,
  55         NATOMS
  56 } atom_t;
  57
  58 typedef enum {
  59         CLR_FOCUS, CLR_UNFOCUS, CLR_URGENT, NCOLORS
  60 } color_t;
  61
  62 /* Global data */
  63 static win_t *root;
  64 static int   running;
  65 static void *cache;
  66 static Atom atoms[NATOMS];
  67 static int (*xerrorxlib)(Display *, XErrorEvent *);
  68 static unsigned long colors[NCOLORS];
  69 static list_t *screens;
  70 static list_t *struts;
  71
  72 /* Debug functions */
  73 static char *state_map[] = {
  74         [ST_HIDE ] "hide ",
  75         [ST_SHOW ] "show ",
  76         [ST_FULL ] "full ",
  77         [ST_MAX  ] "max  ",
  78         [ST_SHADE] "shade",
  79         [ST_ICON ] "icon ",
  80         [ST_CLOSE] "close",
  81 };
  82
  83 /* Conversion functions */
  84 static event_map_t ev2sym[] = {
  85         {EV_LEFT    , XK_Left },
  86         {EV_RIGHT   , XK_Right},
  87         {EV_UP      , XK_Up   },
  88         {EV_DOWN    , XK_Down },
  89         {EV_HOME    , XK_Home },
  90         {EV_END     , XK_End  },
  91         {EV_PAGEUP  , XK_Prior},
  92         {EV_PAGEDOWN, XK_Next },
  93         {EV_F1      , XK_F1   },
  94         {EV_F2      , XK_F2   },
  95         {EV_F3      , XK_F3   },
  96         {EV_F4      , XK_F4   },
  97         {EV_F5      , XK_F5   },
  98         {EV_F6      , XK_F6   },
  99         {EV_F7      , XK_F7   },
 100         {EV_F8      , XK_F8   },
 101         {EV_F9      , XK_F9   },
 102         {EV_F10     , XK_F10  },
 103         {EV_F11     , XK_F11  },
 104         {EV_F12     , XK_F12  },
 105 };
 106
 107 /* - Modifiers */
 108 static mod_t x2mod(unsigned int state, int up)
 109 {
 110         return (mod_t){
 111                .alt   = !!(state & Mod1Mask   ),
 112                .ctrl  = !!(state & ControlMask),
 113                .shift = !!(state & ShiftMask  ),
 114                .win   = !!(state & Mod4Mask   ),
 115                .up    = up,
 116         };
 117 }
 118
 119 static unsigned int mod2x(mod_t mod)
 120 {
 121         return (mod.alt   ? Mod1Mask    : 0)
 122              | (mod.ctrl  ? ControlMask : 0)
 123              | (mod.shift ? ShiftMask   : 0)
 124              | (mod.win   ? Mod4Mask    : 0);
 125 }
 126
 127 /* - Keycodes */
 128 static event_t xk2ev(KeySym sym)
 129 {
 130         event_map_t *em = map_getr(ev2sym,sym);
 131         return em ? em->ev : sym;
 132 }
 133
 134 static KeySym ev2xk(event_t ev)
 135 {
 136         event_map_t *em = map_get(ev2sym,ev);
 137         return em ? em->sym : ev;
 138 }
 139
 140 static event_t xb2ev(int btn)
 141 {
 142         return btn + EV_MOUSE0;
 143 }
 144
 145 static int ev2xb(event_t ev)
 146 {
 147         return ev - EV_MOUSE0;
 148 }
 149
 150 /* - Pointers */
 151 static ptr_t x2ptr(XEvent *xe)
 152 {
 153         XKeyEvent *xke = &xe->xkey;
 154         return (ptr_t){xke->x, xke->y, xke->x_root, xke->y_root};
 155 }
 156
 157 static Window getfocus(win_t *root, XEvent *xe)
 158 {
 159         int revert;
 160         Window focus = PointerRoot;
 161         if (xe->type == KeyPress || xe->type == KeyRelease)
 162                 XGetInputFocus(root->sys->dpy, &focus, &revert);
 163         if (focus == PointerRoot)
 164                 focus = xe->xkey.subwindow;
 165         if (focus == None)
 166                 focus = xe->xkey.window;
 167         return focus;
 168 }
 169
 170 /* Strut functions
 171  *   Struts are spaces at the edges of the screen that are used by
 172  *   toolbars and statusbars such as dzen. */
 173 static int strut_copy(win_t *to, win_t *from, int scale)
 174 {
 175         int left   = from->sys->strut.left;
 176         int right  = from->sys->strut.right;
 177         int top    = from->sys->strut.top;
 178         int bottom = from->sys->strut.bottom;
 179         if (left == 0 && right == 0 && top == 0 && bottom == 0)
 180                 return 0;
 181         to->x += scale*(left      );
 182         to->y += scale*(top       );
 183         to->w -= scale*(left+right);
 184         to->h -= scale*(top+bottom);
 185         to->sys->strut.left   += scale*left;
 186         to->sys->strut.right  += scale*right;
 187         to->sys->strut.top    += scale*top;
 188         to->sys->strut.bottom += scale*bottom;
 189         return 1;
 190 }
 191
 192 static int strut_add(win_t *root, win_t *win)
 193 {
 194         /* Get X11 strut data */
 195         Atom ret_type;
 196         int ret_size;
 197         unsigned long ret_items, bytes_left;
 198         unsigned char *xdata;
 199         int status = XGetWindowProperty(win->sys->dpy, win->sys->xid,
 200                         atoms[NET_STRUT], 0L, 4L, False, XA_CARDINAL,
 201                         &ret_type, &ret_size, &ret_items, &bytes_left, &xdata);
 202         if (status != Success || ret_size != 32 || ret_items != 4)
 203                 return 0;
 204
 205         win->sys->strut.left   = ((long*)xdata)[0];
 206         win->sys->strut.right  = ((long*)xdata)[1];
 207         win->sys->strut.top    = ((long*)xdata)[2];
 208         win->sys->strut.bottom = ((long*)xdata)[3];
 209         struts = list_insert(struts, win);
 210         for (list_t *cur = screens; cur; cur = cur->next)
 211                 strut_copy(cur->data, win, 1);
 212         return strut_copy(root, win, 1);
 213 }
 214
 215 static int strut_del(win_t *root, win_t *win)
 216 {
 217         list_t *lwin = list_find(struts, win);
 218         if (lwin)
 219                 struts = list_remove(struts, lwin, 0);
 220         for (list_t *cur = screens; cur; cur = cur->next)
 221                 strut_copy(cur->data, win, -1);
 222         return strut_copy(root, win, -1);
 223 }
 224
 225 /* Window functions */
 226 static Atom win_prop(win_t *win, atom_t prop);
 227 static win_t *win_find(Display *dpy, Window xid, int create);
 228
 229 static win_t *win_new(Display *dpy, Window xid)
 230 {
 231         Window trans;
 232         XWindowAttributes attr;
 233         if (XGetWindowAttributes(dpy, xid, &attr))
 234                 if (attr.override_redirect)
 235                         return NULL;
 236
 237         win_t *win    = new0(win_t);
 238         win->x        = attr.x;
 239         win->y        = attr.y;
 240         win->w        = attr.width;
 241         win->h        = attr.height;
 242         win->sys      = new0(win_sys_t);
 243         win->sys->dpy = dpy;
 244         win->sys->xid = xid;
 245
 246         if (root) {
 247                 if (strut_add(root, win))
 248                         win->type = TYPE_TOOLBAR;
 249
 250                 if (win_prop(win, NET_TYPE) == atoms[NET_DIALOG])
 251                         win->type = TYPE_DIALOG;
 252
 253                 if (win_prop(win, NET_STATE) == atoms[NET_FULL])
 254                         win->state = ST_FULL;
 255
 256                 if (XGetTransientForHint(dpy, xid, &trans))
 257                         win->parent = win_find(dpy, trans, 0);
 258
 259                 XSelectInput(dpy, xid, PropertyChangeMask);
 260         }
 261
 262         printf("win_new: win=%p x11=(%p,%d) state=%x pos=(%d,%d %dx%d) type=%s\n",
 263                         win, dpy, (int)xid, win->state,
 264                         win->x, win->y, win->w, win->h,
 265                         win->type == TYPE_NORMAL  ? "normal"  :
 266                         win->type == TYPE_DIALOG  ? "dialog"  :
 267                         win->type == TYPE_TOOLBAR ? "toolbar" : "unknown");
 268
 269         if (root)
 270                 wm_insert(win);
 271
 272         return win;
 273 }
 274
 275 static int win_cmp(const void *_a, const void *_b)
 276 {
 277         const win_t *a = _a, *b = _b;
 278         if (a->sys->dpy < b->sys->dpy) return -1;
 279         if (a->sys->dpy > b->sys->dpy) return  1;
 280         if (a->sys->xid < b->sys->xid) return -1;
 281         if (a->sys->xid > b->sys->xid) return  1;
 282         return 0;
 283 }
 284
 285 static win_t *win_find(Display *dpy, Window xid, int create)
 286 {
 287         if (!dpy || !xid)
 288                 return NULL;
 289         //printf("win_find: %p, %d\n", dpy, (int)xid);
 290         win_sys_t sys = {.dpy=dpy, .xid=xid};
 291         win_t     tmp = {.sys=&sys};
 292         win_t **old = NULL, *new = NULL;
 293         if ((old = tfind(&tmp, &cache, win_cmp)))
 294                 return *old;
 295         if (create && (new = win_new(dpy,xid)))
 296                 tsearch(new, &cache, win_cmp);
 297         return new;
 298 }
 299
 300 static void win_free(win_t *win)
 301 {
 302         free(win->sys);
 303         free(win);
 304 }
 305
 306 static void win_remove(win_t *win)
 307 {
 308         if (win != root) {
 309                 strut_del(root, win);
 310                 wm_remove(win);
 311         }
 312         tdelete(win, &cache, win_cmp);
 313         win_free(win);
 314 }
 315
 316 static int win_viewable(Display *dpy, Window xid)
 317 {
 318         XWindowAttributes attr;
 319         if (XGetWindowAttributes(dpy, xid, &attr))
 320                 return attr.map_state == IsViewable;
 321         else
 322                 return True;
 323 }
 324
 325 static int win_msg(win_t *win, atom_t msg)
 326 {
 327         int n, found = 0;
 328         Atom *protos;
 329         if (!XGetWMProtocols(win->sys->dpy, win->sys->xid, &protos, &n))
 330                 return 0;
 331
 332         while (!found && n--)
 333                 found = protos[n] == atoms[msg];
 334         XFree(protos);
 335         if (!found)
 336                 return 0;
 337
 338         XSendEvent(win->sys->dpy, win->sys->xid, False, NoEventMask, &(XEvent){
 339                 .xclient.type         = ClientMessage,
 340                 .xclient.window       = win->sys->xid,
 341                 .xclient.message_type = atoms[WM_PROTO],
 342                 .xclient.format       = 32,
 343                 .xclient.data.l[0]    = atoms[msg],
 344                 .xclient.data.l[1]    = CurrentTime,
 345         });
 346         return 1;
 347 }
 348
 349 static Atom win_prop(win_t *win, atom_t prop)
 350 {
 351         int format;
 352         unsigned long nitems, bytes;
 353         unsigned char *buf = NULL;
 354         Atom atom, type = XA_ATOM;
 355         if (XGetWindowProperty(win->sys->dpy, win->sys->xid, atoms[prop],
 356                         0L, sizeof(Atom), False, type, &type, &format, &nitems, &bytes, &buf) || !buf)
 357                 return 0;
 358         atom = *(Atom *)buf;
 359         XFree(buf);
 360         return atom;
 361 }
 362
 363 /* Drawing functions */
 364 static unsigned long get_color(Display *dpy, const char *name)
 365 {
 366         XColor color;
 367         int screen = DefaultScreen(dpy);
 368         Colormap cmap = DefaultColormap(dpy, screen);
 369         XAllocNamedColor(dpy, cmap, name, &color, &color);
 370         return color.pixel;
 371 }
 372
 373 /* Callbacks */
 374 static void process_event(int type, XEvent *xe, win_t *root)
 375 {
 376         Display  *dpy = root->sys->dpy;
 377         win_t *win = NULL;
 378         //printf("event: %d\n", type);
 379
 380         /* Common data for all these events ... */
 381         ptr_t ptr = {}; mod_t mod = {};
 382         if (type == KeyPress    || type == KeyRelease    ||
 383             type == ButtonPress || type == ButtonRelease ||
 384             type == MotionNotify) {
 385                 Window xid = getfocus(root, xe);
 386                 if (!(win = win_find(dpy,xid,0)))
 387                         return;
 388                 //printf("button-press %p\n", win);
 389                 ptr = x2ptr(xe);
 390                 mod = x2mod(xe->xkey.state, type==KeyRelease||type==ButtonRelease);
 391         }
 392
 393         /* Split based on event */
 394         if (type == KeyPress) {
 395                 while (XCheckTypedEvent(dpy, KeyPress, xe));
 396                 KeySym sym = XLookupKeysym(&xe->xkey, 0);
 397                 //printf("got xe %c %hhx\n", xk2ev(sym), mod2int(mod));
 398                 wm_handle_event(win, xk2ev(sym), mod, ptr);
 399         }
 400         else if (type == KeyRelease) {
 401                 //printf("release: %lx\n", xe->xkey.window);
 402         }
 403         else if (type == ButtonPress) {
 404                 if (wm_handle_event(win, xb2ev(xe->xbutton.button), mod, ptr)) {
 405                         //printf("grab pointer\n");
 406                         XGrabPointer(dpy, xe->xbutton.root, True, PointerMotionMask|ButtonReleaseMask,
 407                                         GrabModeAsync, GrabModeAsync, None, None, CurrentTime);
 408                 } else {
 409                         //printf("allow events\n");
 410                         XAllowEvents(win->sys->dpy, ReplayPointer, xe->xbutton.time);
 411                 }
 412         }
 413         else if (type == ButtonRelease) {
 414                 XUngrabPointer(dpy, CurrentTime);
 415                 wm_handle_event(win, xb2ev(xe->xbutton.button), mod, ptr);
 416         }
 417         else if (type == MotionNotify) {
 418                 while (XCheckTypedEvent(dpy, MotionNotify, xe));
 419                 wm_handle_ptr(win, ptr);
 420         }
 421         else if (type == EnterNotify || type == LeaveNotify) {
 422                 printf("%s: %lx\n", type==EnterNotify?"enter":"leave",
 423                                 xe->xcrossing.window);
 424                 event_t ev = type == EnterNotify ? EV_ENTER : EV_LEAVE;
 425                 if ((win = win_find(dpy,xe->xcrossing.window,0)))
 426                         wm_handle_event(win, ev, MOD(), PTR());
 427         }
 428         else if (type == FocusIn || type == FocusOut) {
 429                 //printf("focus: %lx\n", xe->xfocus.window);
 430                 event_t ev = type == FocusIn ? EV_FOCUS : EV_UNFOCUS;
 431                 if ((win = win_find(dpy,xe->xfocus.window,0)))
 432                         wm_handle_event(win, ev, MOD(), PTR());
 433         }
 434         else if (type == ConfigureNotify) {
 435                 //printf("configure: %lx\n", xe->xconfigure.window);
 436         }
 437         else if (type == MapNotify) {
 438                 printf("map: %lx\n", xe->xmap.window);
 439         }
 440         else if (type == UnmapNotify) {
 441                 if ((win = win_find(dpy,xe->xunmap.window,0)) &&
 442                      win->state != ST_HIDE) {
 443                         printf("unmap: %lx\n", xe->xunmap.window);
 444                         wm_handle_state(win, win->state, ST_HIDE);
 445                         win->state = ST_HIDE;
 446                 }
 447         }
 448         else if (type == DestroyNotify) {
 449                 printf("destroy: %lx\n", xe->xdestroywindow.window);
 450                 if ((win = win_find(dpy,xe->xdestroywindow.window,0)))
 451                         win_remove(win);
 452         }
 453         else if (type == ConfigureRequest) {
 454                 XConfigureRequestEvent *cre = &xe->xconfigurerequest;
 455                 printf("configure_req: %lx - (0x%lx) %dx%d @ %d,%d\n",
 456                                 cre->window, cre->value_mask,
 457                                 cre->height, cre->width, cre->x, cre->y);
 458                 if ((win = win_find(dpy,xe->xconfigurerequest.window,1))) {
 459                         XSendEvent(dpy, cre->window, False, StructureNotifyMask, &(XEvent){
 460                                 .xconfigure.type              = ConfigureNotify,
 461                                 .xconfigure.display           = win->sys->dpy,
 462                                 .xconfigure.event             = win->sys->xid,
 463                                 .xconfigure.window            = win->sys->xid,
 464                                 .xconfigure.x                 = win->x,
 465                                 .xconfigure.y                 = win->y,
 466                                 .xconfigure.width             = win->w,
 467                                 .xconfigure.height            = win->h,
 468                                 .xconfigure.border_width      = border,
 469                         });
 470                         XSync(win->sys->dpy, False);
 471                 }
 472         }
 473         else if (type == MapRequest) {
 474                 printf("map_req: %lx\n", xe->xmaprequest.window);
 475                 win = win_find(dpy,xe->xmaprequest.window,1);
 476                 // fixme, for hide -> max, etc
 477                 if (win->state == ST_HIDE) {
 478                         wm_handle_state(win, win->state, ST_SHOW);
 479                         win->state = ST_SHOW;
 480                 }
 481                 sys_show(win, win->state);
 482         }
 483         else if (type == ClientMessage) {
 484                 XClientMessageEvent *cme = &xe->xclient;
 485                 printf("client_msg: %lx - %ld %ld,%ld,%ld,%ld,%ld\n",
 486                                 cme->window, cme->message_type,
 487                                 cme->data.l[0], cme->data.l[1], cme->data.l[2],
 488                                 cme->data.l[3], cme->data.l[4]);
 489                 if ((win = win_find(dpy,cme->window,0))     &&
 490                     (cme->message_type == atoms[NET_STATE]) &&
 491                     (cme->data.l[1] == atoms[NET_FULL] ||
 492                      cme->data.l[2] == atoms[NET_FULL])) {
 493                         state_t next = (cme->data.l[0] == 1 || /* _NET_WM_STATE_ADD    */
 494                                        (cme->data.l[0] == 2 && /* _NET_WM_STATE_TOGGLE */
 495                                         win->state != ST_FULL)) ? ST_FULL : ST_SHOW;
 496                         wm_handle_state(win, win->state, next);
 497                         sys_show(win, next);
 498                 }
 499         }
 500         else if (type == PropertyNotify) {
 501                 printf("prop: %lx - %d\n", xe->xproperty.window, xe->xproperty.state);
 502         }
 503         else {
 504                 printf("unknown event: %d\n", type);
 505         }
 506 }
 507
 508 static int xerror(Display *dpy, XErrorEvent *err)
 509 {
 510         if (err->error_code == BadWindow ||
 511             (err->request_code == X_SetInputFocus     && err->error_code == BadMatch   ) ||
 512             (err->request_code == X_PolyText8         && err->error_code == BadDrawable) ||
 513             (err->request_code == X_PolyFillRectangle && err->error_code == BadDrawable) ||
 514             (err->request_code == X_PolySegment       && err->error_code == BadDrawable) ||
 515             (err->request_code == X_ConfigureWindow   && err->error_code == BadMatch   ) ||
 516             (err->request_code == X_GrabButton        && err->error_code == BadAccess  ) ||
 517             (err->request_code == X_GrabKey           && err->error_code == BadAccess  ) ||
 518             (err->request_code == X_CopyArea          && err->error_code == BadDrawable))
 519                 return 0;
 520         if (err->request_code == X_ChangeWindowAttributes && err->error_code == BadAccess)
 521                 error("Another window manager is already running");
 522         return xerrorxlib(dpy, err);
 523 }
 524
 525 static int xnoerror(Display *dpy, XErrorEvent *err)
 526 {
 527         return 0;
 528 }
 529
 530
 531 /********************
 532  * System functions *
 533  ********************/
 534 void sys_move(win_t *win, int x, int y, int w, int h)
 535 {
 536         //printf("sys_move: %p - %d,%d  %dx%d\n", win, x, y, w, h);
 537         int b = 2*border;
 538         win->x = x; win->y = y;
 539         win->w = MAX(w,1+b); win->h = MAX(h,1+b);
 540         w      = MAX(w-b,1); h      = MAX(h-b,1);
 541         XConfigureWindow(win->sys->dpy, win->sys->xid, CWX|CWY|CWWidth|CWHeight,
 542                 &(XWindowChanges) { .x=x, .y=y, .width=w, .height=h });
 543         XMoveResizeWindow(win->sys->dpy, win->sys->xid, x, y, w, h);
 544
 545         /* Flush events, so moving window doesn't cause re-focus
 546          * There's probably a better way to do this */
 547         XEvent xe;
 548         XSync(win->sys->dpy, False);
 549         while (XCheckMaskEvent(win->sys->dpy, EnterWindowMask|LeaveWindowMask, &xe))
 550                 printf("Skipping enter/leave event\n");
 551 }
 552
 553 void sys_raise(win_t *win)
 554 {
 555         //printf("sys_raise: %p\n", win);
 556         XRaiseWindow(win->sys->dpy, win->sys->xid);
 557         for (list_t *cur = struts; cur; cur = cur->next)
 558                 XRaiseWindow(((win_t*)cur->data)->sys->dpy,
 559                              ((win_t*)cur->data)->sys->xid);
 560 }
 561
 562 void sys_focus(win_t *win)
 563 {
 564         //printf("sys_focus: %p\n", win);
 565
 566         /* Set actual focus */
 567         XSetInputFocus(win->sys->dpy, win->sys->xid,
 568                         RevertToPointerRoot, CurrentTime);
 569         //win_msg(win, WM_FOCUS);
 570
 571         /* Set border on focused window */
 572         static win_t *last = NULL;
 573         if (last)
 574                 XSetWindowBorder(last->sys->dpy, last->sys->xid, colors[CLR_UNFOCUS]);
 575         XSync(win->sys->dpy, False);
 576         XSetWindowBorder(win->sys->dpy, win->sys->xid, colors[CLR_FOCUS]);
 577         last = win;
 578 }
 579
 580 void sys_show(win_t *win, state_t state)
 581 {
 582         //if (win->state == state)
 583         //      return;
 584
 585         /* Debug */
 586         printf("sys_show: %p: %s -> %s\n", win,
 587                         state_map[win->state], state_map[state]);
 588
 589         /* Find screen */
 590         win_t *screen = NULL;
 591         if (state == ST_FULL || state == ST_MAX) {
 592                 for (list_t *cur = screens; cur; cur = cur->next) {
 593                         screen = cur->data;
 594                         if (win->x >= screen->x && win->x <= screen->x+screen->w &&
 595                             win->y >= screen->y && win->y <= screen->y+screen->h)
 596                                 break;
 597                 }
 598         }
 599
 600         /* Update properties */
 601         if (state == ST_FULL)
 602                 XChangeProperty(win->sys->dpy, win->sys->xid, atoms[NET_STATE], XA_ATOM, 32,
 603                                 PropModeReplace, (unsigned char*)&atoms[NET_FULL], 1);
 604         else if (state != ST_FULL)
 605                 XChangeProperty(win->sys->dpy, win->sys->xid, atoms[NET_STATE], XA_ATOM, 32,
 606                                 PropModeReplace, (unsigned char*)0, 0);
 607
 608         /* Update border */
 609         if (state == ST_SHOW || state == ST_MAX || state == ST_SHADE)
 610                 XSetWindowBorderWidth(win->sys->dpy, win->sys->xid, border);
 611         else if (state == ST_FULL)
 612                 XSetWindowBorderWidth(win->sys->dpy, win->sys->xid, 0);
 613
 614         /* Map/Unmap window */
 615         if (state == ST_SHOW || state == ST_FULL || state == ST_MAX || state == ST_SHADE)
 616                 XMapWindow(win->sys->dpy, win->sys->xid);
 617         else if (state == ST_HIDE)
 618                 XUnmapWindow(win->sys->dpy, win->sys->xid);
 619
 620         /* Resize windows */
 621         if (state == ST_SHOW) {
 622                 sys_move(win, win->x, win->y, win->w, win->h);
 623         } else if (state == ST_MAX) {
 624                 sys_move(win, screen->x, screen->y, screen->w, screen->h);
 625         } else if (state == ST_FULL) {
 626                 XWindowChanges wc = {
 627                         .x      = screen->x - screen->sys->strut.left ,
 628                         .y      = screen->y - screen->sys->strut.top ,
 629                         .width  = screen->w + screen->sys->strut.left + screen->sys->strut.right,
 630                         .height = screen->h + screen->sys->strut.top  + screen->sys->strut.bottom
 631                 };
 632                 XConfigureWindow(win->sys->dpy, win->sys->xid, CWX|CWY|CWWidth|CWHeight, &wc);
 633                 XMoveResizeWindow(win->sys->dpy, win->sys->xid, wc.x, wc.y, wc.width, wc.height);
 634         } else if (state == ST_SHADE) {
 635                 XConfigureWindow(win->sys->dpy, win->sys->xid, CWHeight,
 636                         &(XWindowChanges) { .height = stack });
 637         }
 638
 639         /* Raise window */
 640         if (state == ST_FULL || state == ST_MAX)
 641                 XRaiseWindow(win->sys->dpy, win->sys->xid);
 642
 643         /* Close windows */
 644         if (state == ST_CLOSE) {
 645                 if (!win_msg(win, WM_DELETE)) {
 646                         XGrabServer(win->sys->dpy);
 647                         XSetErrorHandler(xnoerror);
 648                         XSetCloseDownMode(win->sys->dpy, DestroyAll);
 649                         XKillClient(win->sys->dpy, win->sys->xid);
 650                         XSync(win->sys->dpy, False);
 651                         XSetErrorHandler(xerror);
 652                         XUngrabServer(win->sys->dpy);
 653                 }
 654         }
 655
 656         /* Update state */
 657         win->state = state;
 658 }
 659
 660 void sys_watch(win_t *win, event_t ev, mod_t mod)
 661 {
 662         //printf("sys_watch: %p - %x %hhx\n", win, ev, mod);
 663         XWindowAttributes attr;
 664         XGetWindowAttributes(win->sys->dpy, win->sys->xid, &attr);
 665         long mask = attr.your_event_mask;
 666         if (EV_MOUSE0 <= ev && ev <= EV_MOUSE7)
 667                 XGrabButton(win->sys->dpy, ev2xb(ev), mod2x(mod), win->sys->xid, False,
 668                                 mod.up ? ButtonReleaseMask : ButtonPressMask,
 669                                 GrabModeSync, GrabModeAsync, None, None);
 670         else if (ev == EV_ENTER)
 671                 XSelectInput(win->sys->dpy, win->sys->xid, EnterWindowMask|mask);
 672         else if (ev == EV_LEAVE)
 673                 XSelectInput(win->sys->dpy, win->sys->xid, LeaveWindowMask|mask);
 674         else if (ev == EV_FOCUS || ev == EV_UNFOCUS)
 675                 XSelectInput(win->sys->dpy, win->sys->xid, FocusChangeMask|mask);
 676         else
 677                 XGrabKey(win->sys->dpy, XKeysymToKeycode(win->sys->dpy, ev2xk(ev)),
 678                                 mod2x(mod), win->sys->xid, True, GrabModeAsync, GrabModeAsync);
 679 }
 680
 681 void sys_unwatch(win_t *win, event_t ev, mod_t mod)
 682 {
 683         if (EV_MOUSE0 <= ev && ev <= EV_MOUSE7)
 684                 XUngrabButton(win->sys->dpy, ev2xb(ev), mod2x(mod), win->sys->xid);
 685 }
 686
 687 list_t *sys_info(win_t *win)
 688 {
 689         /* Use global copy of screens so we can add struts */
 690         if (screens == NULL) {
 691                 /* Add Xinerama screens */
 692                 int n = 0;
 693                 XineramaScreenInfo *info = NULL;
 694                 if (XineramaIsActive(win->sys->dpy))
 695                         info = XineramaQueryScreens(win->sys->dpy, &n);
 696                 for (int i = 0; i < n; i++) {
 697                         win_t *screen = new0(win_t);
 698                         screen->x = info[i].x_org;
 699                         screen->y = info[i].y_org;
 700                         screen->w = info[i].width;
 701                         screen->h = info[i].height;
 702                         screen->sys = new0(win_sys_t);
 703                         screens = list_append(screens, screen);
 704                 }
 705         }
 706         if (screens == NULL) {
 707                 /* No xinerama support */
 708                 win_t *screen = new0(win_t);
 709                 *screen = *win;
 710                 screens = list_insert(NULL, screen);
 711         }
 712         return screens;
 713 }
 714
 715 win_t *sys_init(void)
 716 {
 717         Display *dpy;
 718         Window   xid;
 719
 720         /* Load configuration */
 721         stack      = conf_get_int("main.stack",      stack);
 722         border     = conf_get_int("main.border",     border);
 723         no_capture = conf_get_int("main.no-capture", no_capture);
 724
 725         /* Open the display */
 726         if (!(dpy = XOpenDisplay(NULL)))
 727                 error("Unable to get display");
 728         if (!(xid = DefaultRootWindow(dpy)))
 729                 error("Unable to get root window");
 730
 731         /* Setup X11 data */
 732         atoms[WM_PROTO]    = XInternAtom(dpy, "WM_PROTOCOLS",               False);
 733         atoms[WM_FOCUS]    = XInternAtom(dpy, "WM_TAKE_FOCUS",              False);
 734         atoms[WM_DELETE]   = XInternAtom(dpy, "WM_DELETE_WINDOW",           False);
 735         atoms[NET_STATE]   = XInternAtom(dpy, "_NET_WM_STATE",              False);
 736         atoms[NET_FULL]    = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN",   False);
 737         atoms[NET_STRUT]   = XInternAtom(dpy, "_NET_WM_STRUT",              False);
 738         atoms[NET_TYPE]    = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE",        False);
 739         atoms[NET_DIALOG]  = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
 740
 741         colors[CLR_FOCUS]   = get_color(dpy, "#a0a0ff");
 742         colors[CLR_UNFOCUS] = get_color(dpy, "#101066");
 743         colors[CLR_URGENT]  = get_color(dpy, "#ff0000");
 744         //printf("colors = #%06lx #%06lx #%06lx\n", colors[0], colors[1], colors[2]);
 745
 746         /* Select window management events */
 747         XSelectInput(dpy, xid, SubstructureRedirectMask|SubstructureNotifyMask);
 748         xerrorxlib = XSetErrorHandler(xerror);
 749
 750         return root = win_find(dpy, xid, 1);
 751 }
 752
 753 void sys_run(win_t *root)
 754 {
 755         /* Add each initial window */
 756         if (!no_capture) {
 757                 unsigned int nkids;
 758                 Window par, xid, *kids = NULL;
 759                 if (XQueryTree(root->sys->dpy, root->sys->xid,
 760                                         &par, &xid, &kids, &nkids)) {
 761                         for(int i = 0; i < nkids; i++)
 762                                 if (win_viewable(root->sys->dpy, kids[i]))
 763                                         win_find(root->sys->dpy, kids[i], 1);
 764                         XFree(kids);
 765                 }
 766         }
 767
 768         /* Main loop */
 769         running = 1;
 770         while (running)
 771         {
 772                 XEvent xe;
 773                 XNextEvent(root->sys->dpy, &xe);
 774                 process_event(xe.type, &xe, root);
 775         }
 776 }
 777
 778 void sys_exit(void)
 779 {
 780         running = 0;
 781 }
 782
 783 void sys_free(win_t *root)
 784 {
 785         XCloseDisplay(root->sys->dpy);
 786         while (screens) {
 787                 win_free(screens->data);
 788                 screens = list_remove(screens, screens, 0);
 789         }
 790         tdestroy(cache, (void(*)(void*))win_free);
 791 }