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