dwm.c

   1 /* See LICENSE file for copyright and license details.
   2  *
   3  * dynamic window manager is designed like any other X client as well. It is
   4  * driven through handling X events. In contrast to other X clients, a window
   5  * manager selects for SubstructureRedirectMask on the root window, to receive
   6  * events about window (dis-)appearance. Only one X connection at a time is
   7  * allowed to select for this event mask.
   8  *
   9  * The event handlers of dwm are organized in an array which is accessed
  10  * whenever a new event has been fetched. This allows event dispatching
  11  * in O(1) time.
  12  *
  13  * Each child of the root window is called a client, except windows which have
  14  * set the override_redirect flag. Clients are organized in a linked client
  15  * list on each monitor, the focus history is remembered through a stack list
  16  * on each monitor. Each client contains a bit array to indicate the tags of a
  17  * client.
  18  *
  19  * Keys and tagging rules are organized as arrays and defined in config.h.
  20  *
  21  * To understand everything else, start reading main().
  22  */
  23 #include <errno.h>
  24 #include <locale.h>
  25 #include <signal.h>
  26 #include <stdarg.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <unistd.h>
  31 #include <sys/types.h>
  32 #include <sys/wait.h>
  33 #include <X11/cursorfont.h>
  34 #include <X11/keysym.h>
  35 #include <X11/Xatom.h>
  36 #include <X11/Xlib.h>
  37 #include <X11/Xproto.h>
  38 #include <X11/Xutil.h>
  39 #ifdef XINERAMA
  40 #include <X11/extensions/Xinerama.h>
  41 #endif /* XINERAMA */
  42 #include <X11/Xft/Xft.h>
  43
  44 #include "drw.h"
  45 #include "util.h"
  46
  47 /* macros */
  48 #define BUTTONMASK              (ButtonPressMask|ButtonReleaseMask)
  49 #define CLEANMASK(mask)         (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
  50 #define INTERSECT(x,y,w,h,m)    (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
  51                                * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
  52 #define ISVISIBLE(C)            ((C->tags & C->mon->tagset[C->mon->seltags]))
  53 #define LENGTH(X)               (sizeof X / sizeof X[0])
  54 #define MOUSEMASK               (BUTTONMASK|PointerMotionMask)
  55 #define WIDTH(X)                ((X)->w + 2 * (X)->bw)
  56 #define HEIGHT(X)               ((X)->h + 2 * (X)->bw)
  57 #define TAGMASK                 ((1 << LENGTH(tags)) - 1)
  58 #define TEXTW(X)                (drw_fontset_getwidth(drw, (X)) + lrpad)
  59
  60 #define SYSTEM_TRAY_REQUEST_DOCK    0
  61
  62 /* XEMBED messages */
  63 #define XEMBED_EMBEDDED_NOTIFY      0
  64 #define XEMBED_WINDOW_ACTIVATE      1
  65 #define XEMBED_FOCUS_IN             4
  66 #define XEMBED_MODALITY_ON         10
  67
  68 #define XEMBED_MAPPED              (1 << 0)
  69 #define XEMBED_WINDOW_ACTIVATE      1
  70 #define XEMBED_WINDOW_DEACTIVATE    2
  71
  72 #define VERSION_MAJOR               0
  73 #define VERSION_MINOR               0
  74 #define XEMBED_EMBEDDED_VERSION (VERSION_MAJOR << 16) | VERSION_MINOR
  75
  76 /* enums */
  77 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
  78 enum { SchemeNorm, SchemeSel }; /* color schemes */
  79 enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
  80        NetSystemTray, NetSystemTrayOP, NetSystemTrayOrientation, NetSystemTrayOrientationHorz,
  81        NetWMFullscreen, NetActiveWindow, NetWMWindowType,
  82        NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
  83 enum { Manager, Xembed, XembedInfo, XLast }; /* Xembed atoms */
  84 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
  85 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
  86        ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
  87
  88 typedef union {
  89         int i;
  90         unsigned int ui;
  91         float f;
  92         const void *v;
  93 } Arg;
  94
  95 typedef struct {
  96         unsigned int click;
  97         unsigned int mask;
  98         unsigned int button;
  99         void (*func)(const Arg *arg);
 100         const Arg arg;
 101 } Button;
 102
 103 typedef struct Monitor Monitor;
 104 typedef struct Client Client;
 105 struct Client {
 106         char name[256];
 107         float mina, maxa;
 108         int x, y, w, h;
 109         int sfx, sfy, sfw, sfh; /* stored float geometry, used on mode revert */
 110         int oldx, oldy, oldw, oldh;
 111         int basew, baseh, incw, inch, maxw, maxh, minw, minh;
 112         int bw, oldbw;
 113         unsigned int tags;
 114         int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
 115         Client *next;
 116         Client *snext;
 117         Monitor *mon;
 118         Window win;
 119 };
 120
 121 typedef struct {
 122         unsigned int mod;
 123         KeySym keysym;
 124         void (*func)(const Arg *);
 125         const Arg arg;
 126 } Key;
 127
 128 typedef struct {
 129         const char *symbol;
 130         void (*arrange)(Monitor *);
 131 } Layout;
 132
 133 struct Monitor {
 134         char ltsymbol[16];
 135         float mfact;
 136         int nmaster;
 137         int num;
 138         int by;               /* bar geometry */
 139         int mx, my, mw, mh;   /* screen size */
 140         int wx, wy, ww, wh;   /* window area  */
 141         unsigned int seltags;
 142         unsigned int sellt;
 143         unsigned int tagset[2];
 144         int showbar;
 145         int topbar;
 146         Client *clients;
 147         Client *sel;
 148         Client *stack;
 149         Monitor *next;
 150         Window barwin;
 151         const Layout *lt[2];
 152 };
 153
 154 typedef struct {
 155         const char *class;
 156         const char *instance;
 157         const char *title;
 158         unsigned int tags;
 159         int isfloating;
 160         int monitor;
 161 } Rule;
 162
 163 typedef struct Systray   Systray;
 164 struct Systray {
 165         Window win;
 166         Client *icons;
 167 };
 168
 169 /* function declarations */
 170 static void applyrules(Client *c);
 171 static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
 172 static void arrange(Monitor *m);
 173 static void arrangemon(Monitor *m);
 174 static void attach(Client *c);
 175 static void attachstack(Client *c);
 176 static void buttonpress(XEvent *e);
 177 static void checkotherwm(void);
 178 static void cleanup(void);
 179 static void cleanupmon(Monitor *mon);
 180 static void clientmessage(XEvent *e);
 181 static void configure(Client *c);
 182 static void configurenotify(XEvent *e);
 183 static void configurerequest(XEvent *e);
 184 static Monitor *createmon(void);
 185 static void destroynotify(XEvent *e);
 186 static void detach(Client *c);
 187 static void detachstack(Client *c);
 188 static Monitor *dirtomon(int dir);
 189 static void drawbar(Monitor *m);
 190 static void drawbars(void);
 191 static void enternotify(XEvent *e);
 192 static void expose(XEvent *e);
 193 static void focus(Client *c);
 194 static void focusin(XEvent *e);
 195 static void focusmon(const Arg *arg);
 196 static void focusstack(const Arg *arg);
 197 static Atom getatomprop(Client *c, Atom prop);
 198 static int getrootptr(int *x, int *y);
 199 static long getstate(Window w);
 200 static unsigned int getsystraywidth();
 201 static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
 202 static void grabbuttons(Client *c, int focused);
 203 static void grabkeys(void);
 204 static void incnmaster(const Arg *arg);
 205 static void keypress(XEvent *e);
 206 static void killclient(const Arg *arg);
 207 static void manage(Window w, XWindowAttributes *wa);
 208 static void mappingnotify(XEvent *e);
 209 static void maprequest(XEvent *e);
 210 static void monocle(Monitor *m);
 211 static void motionnotify(XEvent *e);
 212 static void movemouse(const Arg *arg);
 213 static Client *nexttiled(Client *c);
 214 static void pop(Client *);
 215 static void propertynotify(XEvent *e);
 216 static void quit(const Arg *arg);
 217 static Monitor *recttomon(int x, int y, int w, int h);
 218 static void removesystrayicon(Client *i);
 219 static void resize(Client *c, int x, int y, int w, int h, int interact);
 220 static void resizebarwin(Monitor *m);
 221 static void resizeclient(Client *c, int x, int y, int w, int h);
 222 static void resizemouse(const Arg *arg);
 223 static void resizerequest(XEvent *e);
 224 static void restack(Monitor *m);
 225 static void run(void);
 226 static void scan(void);
 227 static int sendevent(Window w, Atom proto, int m, long d0, long d1, long d2, long d3, long d4);
 228 static void sendmon(Client *c, Monitor *m);
 229 static void setclientstate(Client *c, long state);
 230 static void setfocus(Client *c);
 231 static void setfullscreen(Client *c, int fullscreen);
 232 static void setlayout(const Arg *arg);
 233 static void setmfact(const Arg *arg);
 234 static void setup(void);
 235 static void seturgent(Client *c, int urg);
 236 static void showhide(Client *c);
 237 static void sigchld(int unused);
 238 static void spawn(const Arg *arg);
 239 static Monitor *systraytomon(Monitor *m);
 240 static void tag(const Arg *arg);
 241 static void tagmon(const Arg *arg);
 242 static void tile(Monitor *);
 243 static void togglebar(const Arg *arg);
 244 static void togglefloating(const Arg *arg);
 245 static void toggletag(const Arg *arg);
 246 static void toggleview(const Arg *arg);
 247 static void unfocus(Client *c, int setfocus);
 248 static void unmanage(Client *c, int destroyed);
 249 static void unmapnotify(XEvent *e);
 250 static void updatebarpos(Monitor *m);
 251 static void updatebars(void);
 252 static void updateclientlist(void);
 253 static int updategeom(void);
 254 static void updatenumlockmask(void);
 255 static void updatesizehints(Client *c);
 256 static void updatestatus(void);
 257 static void updatesystray(void);
 258 static void updatesystrayicongeom(Client *i, int w, int h);
 259 static void updatesystrayiconstate(Client *i, XPropertyEvent *ev);
 260 static void updatetitle(Client *c);
 261 static void updatewindowtype(Client *c);
 262 static void updatewmhints(Client *c);
 263 static void view(const Arg *arg);
 264 static Client *wintoclient(Window w);
 265 static Monitor *wintomon(Window w);
 266 static Client *wintosystrayicon(Window w);
 267 static int xerror(Display *dpy, XErrorEvent *ee);
 268 static int xerrordummy(Display *dpy, XErrorEvent *ee);
 269 static int xerrorstart(Display *dpy, XErrorEvent *ee);
 270 static void zoom(const Arg *arg);
 271
 272 /* variables */
 273 static Systray *systray =  NULL;
 274 static const char broken[] = "broken";
 275 static char stext[256];
 276 static int screen;
 277 static int sw, sh;           /* X display screen geometry width, height */
 278 static int bh, blw = 0;      /* bar geometry */
 279 static int lrpad;            /* sum of left and right padding for text */
 280 static int (*xerrorxlib)(Display *, XErrorEvent *);
 281 static unsigned int numlockmask = 0;
 282 static void (*handler[LASTEvent]) (XEvent *) = {
 283         [ButtonPress] = buttonpress,
 284         [ClientMessage] = clientmessage,
 285         [ConfigureRequest] = configurerequest,
 286         [ConfigureNotify] = configurenotify,
 287         [DestroyNotify] = destroynotify,
 288         [EnterNotify] = enternotify,
 289         [Expose] = expose,
 290         [FocusIn] = focusin,
 291         [KeyPress] = keypress,
 292         [MappingNotify] = mappingnotify,
 293         [MapRequest] = maprequest,
 294         [MotionNotify] = motionnotify,
 295         [PropertyNotify] = propertynotify,
 296         [ResizeRequest] = resizerequest,
 297         [UnmapNotify] = unmapnotify
 298 };
 299 static Atom wmatom[WMLast], netatom[NetLast], xatom[XLast];
 300 static int running = 1;
 301 static Cur *cursor[CurLast];
 302 static Clr **scheme;
 303 static Display *dpy;
 304 static Drw *drw;
 305 static Monitor *mons, *selmon;
 306 static Window root, wmcheckwin;
 307
 308 /* configuration, allows nested code to access above variables */
 309 #include "config.h"
 310
 311 /* compile-time check if all tags fit into an unsigned int bit array. */
 312 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
 313
 314 /* function implementations */
 315 void
 316 applyrules(Client *c)
 317 {
 318         const char *class, *instance;
 319         unsigned int i;
 320         const Rule *r;
 321         Monitor *m;
 322         XClassHint ch = { NULL, NULL };
 323
 324         /* rule matching */
 325         c->isfloating = 0;
 326         c->tags = 0;
 327         XGetClassHint(dpy, c->win, &ch);
 328         class    = ch.res_class ? ch.res_class : broken;
 329         instance = ch.res_name  ? ch.res_name  : broken;
 330
 331         for (i = 0; i < LENGTH(rules); i++) {
 332                 r = &rules[i];
 333                 if ((!r->title || strstr(c->name, r->title))
 334                 && (!r->class || strstr(class, r->class))
 335                 && (!r->instance || strstr(instance, r->instance)))
 336                 {
 337                         c->isfloating = r->isfloating;
 338                         c->tags |= r->tags;
 339                         for (m = mons; m && m->num != r->monitor; m = m->next);
 340                         if (m)
 341                                 c->mon = m;
 342                 }
 343         }
 344         if (ch.res_class)
 345                 XFree(ch.res_class);
 346         if (ch.res_name)
 347                 XFree(ch.res_name);
 348         c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
 349 }
 350
 351 int
 352 applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
 353 {
 354         int baseismin;
 355         Monitor *m = c->mon;
 356
 357         /* set minimum possible */
 358         *w = MAX(1, *w);
 359         *h = MAX(1, *h);
 360         if (interact) {
 361                 if (*x > sw)
 362                         *x = sw - WIDTH(c);
 363                 if (*y > sh)
 364                         *y = sh - HEIGHT(c);
 365                 if (*x + *w + 2 * c->bw < 0)
 366                         *x = 0;
 367                 if (*y + *h + 2 * c->bw < 0)
 368                         *y = 0;
 369         } else {
 370                 if (*x >= m->wx + m->ww)
 371                         *x = m->wx + m->ww - WIDTH(c);
 372                 if (*y >= m->wy + m->wh)
 373                         *y = m->wy + m->wh - HEIGHT(c);
 374                 if (*x + *w + 2 * c->bw <= m->wx)
 375                         *x = m->wx;
 376                 if (*y + *h + 2 * c->bw <= m->wy)
 377                         *y = m->wy;
 378         }
 379         if (*h < bh)
 380                 *h = bh;
 381         if (*w < bh)
 382                 *w = bh;
 383         if (resizehints || c->isfloating || !c->mon->lt[c->mon->sellt]->arrange) {
 384                 /* see last two sentences in ICCCM 4.1.2.3 */
 385                 baseismin = c->basew == c->minw && c->baseh == c->minh;
 386                 if (!baseismin) { /* temporarily remove base dimensions */
 387                         *w -= c->basew;
 388                         *h -= c->baseh;
 389                 }
 390                 /* adjust for aspect limits */
 391                 if (c->mina > 0 && c->maxa > 0) {
 392                         if (c->maxa < (float)*w / *h)
 393                                 *w = *h * c->maxa + 0.5;
 394                         else if (c->mina < (float)*h / *w)
 395                                 *h = *w * c->mina + 0.5;
 396                 }
 397                 if (baseismin) { /* increment calculation requires this */
 398                         *w -= c->basew;
 399                         *h -= c->baseh;
 400                 }
 401                 /* adjust for increment value */
 402                 if (c->incw)
 403                         *w -= *w % c->incw;
 404                 if (c->inch)
 405                         *h -= *h % c->inch;
 406                 /* restore base dimensions */
 407                 *w = MAX(*w + c->basew, c->minw);
 408                 *h = MAX(*h + c->baseh, c->minh);
 409                 if (c->maxw)
 410                         *w = MIN(*w, c->maxw);
 411                 if (c->maxh)
 412                         *h = MIN(*h, c->maxh);
 413         }
 414         return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
 415 }
 416
 417 void
 418 arrange(Monitor *m)
 419 {
 420         if (m)
 421                 showhide(m->stack);
 422         else for (m = mons; m; m = m->next)
 423                 showhide(m->stack);
 424         if (m) {
 425                 arrangemon(m);
 426                 restack(m);
 427         } else for (m = mons; m; m = m->next)
 428                 arrangemon(m);
 429 }
 430
 431 void
 432 arrangemon(Monitor *m)
 433 {
 434         strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
 435         if (m->lt[m->sellt]->arrange)
 436                 m->lt[m->sellt]->arrange(m);
 437 }
 438
 439 void
 440 attach(Client *c)
 441 {
 442         c->next = c->mon->clients;
 443         c->mon->clients = c;
 444 }
 445
 446 void
 447 attachstack(Client *c)
 448 {
 449         c->snext = c->mon->stack;
 450         c->mon->stack = c;
 451 }
 452
 453 void
 454 buttonpress(XEvent *e)
 455 {
 456         unsigned int i, x, click;
 457         Arg arg = {0};
 458         Client *c;
 459         Monitor *m;
 460         XButtonPressedEvent *ev = &e->xbutton;
 461
 462         click = ClkRootWin;
 463         /* focus monitor if necessary */
 464         if ((m = wintomon(ev->window)) && m != selmon) {
 465                 unfocus(selmon->sel, 1);
 466                 selmon = m;
 467                 focus(NULL);
 468         }
 469         if (ev->window == selmon->barwin) {
 470                 i = x = 0;
 471                 do
 472                         x += TEXTW(tags[i]);
 473                 while (ev->x >= x && ++i < LENGTH(tags));
 474                 if (i < LENGTH(tags)) {
 475                         click = ClkTagBar;
 476                         arg.ui = 1 << i;
 477                 } else if (ev->x < x + blw)
 478                         click = ClkLtSymbol;
 479                 else if (ev->x > selmon->ww - TEXTW(stext))
 480                         click = ClkStatusText;
 481                 else
 482                         click = ClkWinTitle;
 483         } else if ((c = wintoclient(ev->window))) {
 484                 focus(c);
 485                 restack(selmon);
 486                 XAllowEvents(dpy, ReplayPointer, CurrentTime);
 487                 click = ClkClientWin;
 488         }
 489         for (i = 0; i < LENGTH(buttons); i++)
 490                 if (click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
 491                 && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
 492                         buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
 493 }
 494
 495 void
 496 checkotherwm(void)
 497 {
 498         xerrorxlib = XSetErrorHandler(xerrorstart);
 499         /* this causes an error if some other window manager is running */
 500         XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
 501         XSync(dpy, False);
 502         XSetErrorHandler(xerror);
 503         XSync(dpy, False);
 504 }
 505
 506 void
 507 cleanup(void)
 508 {
 509         Arg a = {.ui = ~0};
 510         Layout foo = { "", NULL };
 511         Monitor *m;
 512         size_t i;
 513
 514         view(&a);
 515         selmon->lt[selmon->sellt] = &foo;
 516         for (m = mons; m; m = m->next)
 517                 while (m->stack)
 518                         unmanage(m->stack, 0);
 519         XUngrabKey(dpy, AnyKey, AnyModifier, root);
 520         while (mons)
 521                 cleanupmon(mons);
 522         if (showsystray) {
 523                 XUnmapWindow(dpy, systray->win);
 524                 XDestroyWindow(dpy, systray->win);
 525                 free(systray);
 526         }
 527         for (i = 0; i < CurLast; i++)
 528                 drw_cur_free(drw, cursor[i]);
 529         for (i = 0; i < LENGTH(colors); i++)
 530                 free(scheme[i]);
 531         XDestroyWindow(dpy, wmcheckwin);
 532         drw_free(drw);
 533         XSync(dpy, False);
 534         XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
 535         XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
 536 }
 537
 538 void
 539 cleanupmon(Monitor *mon)
 540 {
 541         Monitor *m;
 542
 543         if (mon == mons)
 544                 mons = mons->next;
 545         else {
 546                 for (m = mons; m && m->next != mon; m = m->next);
 547                 m->next = mon->next;
 548         }
 549         XUnmapWindow(dpy, mon->barwin);
 550         XDestroyWindow(dpy, mon->barwin);
 551         free(mon);
 552 }
 553
 554 void
 555 clientmessage(XEvent *e)
 556 {
 557         XWindowAttributes wa;
 558         XSetWindowAttributes swa;
 559         XClientMessageEvent *cme = &e->xclient;
 560         Client *c = wintoclient(cme->window);
 561
 562         if (showsystray && cme->window == systray->win && cme->message_type == netatom[NetSystemTrayOP]) {
 563                 /* add systray icons */
 564                 if (cme->data.l[1] == SYSTEM_TRAY_REQUEST_DOCK) {
 565                         if (!(c = (Client *)calloc(1, sizeof(Client))))
 566                                 die("fatal: could not malloc() %u bytes\n", sizeof(Client));
 567                         if (!(c->win = cme->data.l[2])) {
 568                                 free(c);
 569                                 return;
 570                         }
 571                         c->mon = selmon;
 572                         c->next = systray->icons;
 573                         systray->icons = c;
 574                         XGetWindowAttributes(dpy, c->win, &wa);
 575                         c->x = c->oldx = c->y = c->oldy = 0;
 576                         c->w = c->oldw = wa.width;
 577                         c->h = c->oldh = wa.height;
 578                         c->oldbw = wa.border_width;
 579                         c->bw = 0;
 580                         c->isfloating = True;
 581                         /* reuse tags field as mapped status */
 582                         c->tags = 1;
 583                         updatesizehints(c);
 584                         updatesystrayicongeom(c, wa.width, wa.height);
 585                         XAddToSaveSet(dpy, c->win);
 586                         XSelectInput(dpy, c->win, StructureNotifyMask | PropertyChangeMask | ResizeRedirectMask);
 587                         XReparentWindow(dpy, c->win, systray->win, 0, 0);
 588                         /* use parents background color */
 589                         swa.background_pixel  = scheme[SchemeNorm][ColBg].pixel;
 590                         XChangeWindowAttributes(dpy, c->win, CWBackPixel, &swa);
 591                         sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_EMBEDDED_NOTIFY, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
 592                         /* FIXME not sure if I have to send these events, too */
 593                         sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_FOCUS_IN, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
 594                         sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_WINDOW_ACTIVATE, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
 595                         sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_MODALITY_ON, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
 596                         XSync(dpy, False);
 597                         resizebarwin(selmon);
 598                         updatesystray();
 599                         setclientstate(c, NormalState);
 600                 }
 601                 return;
 602         }
 603         if (!c)
 604                 return;
 605         if (cme->message_type == netatom[NetWMState]) {
 606                 if (cme->data.l[1] == netatom[NetWMFullscreen]
 607                 || cme->data.l[2] == netatom[NetWMFullscreen])
 608                         setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD    */
 609                                 || (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */ && !c->isfullscreen)));
 610         } else if (cme->message_type == netatom[NetActiveWindow]) {
 611                 if (c != selmon->sel && !c->isurgent)
 612                         seturgent(c, 1);
 613         }
 614 }
 615
 616 void
 617 configure(Client *c)
 618 {
 619         XConfigureEvent ce;
 620
 621         ce.type = ConfigureNotify;
 622         ce.display = dpy;
 623         ce.event = c->win;
 624         ce.window = c->win;
 625         ce.x = c->x;
 626         ce.y = c->y;
 627         ce.width = c->w;
 628         ce.height = c->h;
 629         ce.border_width = c->bw;
 630         ce.above = None;
 631         ce.override_redirect = False;
 632         XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
 633 }
 634
 635 void
 636 configurenotify(XEvent *e)
 637 {
 638         Monitor *m;
 639         Client *c;
 640         XConfigureEvent *ev = &e->xconfigure;
 641         int dirty;
 642
 643         /* TODO: updategeom handling sucks, needs to be simplified */
 644         if (ev->window == root) {
 645                 dirty = (sw != ev->width || sh != ev->height);
 646                 sw = ev->width;
 647                 sh = ev->height;
 648                 if (updategeom() || dirty) {
 649                         drw_resize(drw, sw, bh);
 650                         updatebars();
 651                         for (m = mons; m; m = m->next) {
 652                                 for (c = m->clients; c; c = c->next)
 653                                         if (c->isfullscreen)
 654                                                 resizeclient(c, m->mx, m->my, m->mw, m->mh);
 655                                 resizebarwin(m);
 656                         }
 657                         focus(NULL);
 658                         arrange(NULL);
 659                 }
 660         }
 661 }
 662
 663 void
 664 configurerequest(XEvent *e)
 665 {
 666         Client *c;
 667         Monitor *m;
 668         XConfigureRequestEvent *ev = &e->xconfigurerequest;
 669         XWindowChanges wc;
 670
 671         if ((c = wintoclient(ev->window))) {
 672                 if (ev->value_mask & CWBorderWidth)
 673                         c->bw = ev->border_width;
 674                 else if (c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
 675                         m = c->mon;
 676                         if (ev->value_mask & CWX) {
 677                                 c->oldx = c->x;
 678                                 c->x = m->mx + ev->x;
 679                         }
 680                         if (ev->value_mask & CWY) {
 681                                 c->oldy = c->y;
 682                                 c->y = m->my + ev->y;
 683                         }
 684                         if (ev->value_mask & CWWidth) {
 685                                 c->oldw = c->w;
 686                                 c->w = ev->width;
 687                         }
 688                         if (ev->value_mask & CWHeight) {
 689                                 c->oldh = c->h;
 690                                 c->h = ev->height;
 691                         }
 692                         if ((c->x + c->w) > m->mx + m->mw && c->isfloating)
 693                                 c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
 694                         if ((c->y + c->h) > m->my + m->mh && c->isfloating)
 695                                 c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
 696                         if ((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
 697                                 configure(c);
 698                         if (ISVISIBLE(c))
 699                                 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
 700                 } else
 701                         configure(c);
 702         } else {
 703                 wc.x = ev->x;
 704                 wc.y = ev->y;
 705                 wc.width = ev->width;
 706                 wc.height = ev->height;
 707                 wc.border_width = ev->border_width;
 708                 wc.sibling = ev->above;
 709                 wc.stack_mode = ev->detail;
 710                 XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 711         }
 712         XSync(dpy, False);
 713 }
 714
 715 Monitor *
 716 createmon(void)
 717 {
 718         Monitor *m;
 719
 720         m = ecalloc(1, sizeof(Monitor));
 721         m->tagset[0] = m->tagset[1] = 1;
 722         m->mfact = mfact;
 723         m->nmaster = nmaster;
 724         m->showbar = showbar;
 725         m->topbar = topbar;
 726         m->lt[0] = &layouts[0];
 727         m->lt[1] = &layouts[1 % LENGTH(layouts)];
 728         strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
 729         return m;
 730 }
 731
 732 void
 733 destroynotify(XEvent *e)
 734 {
 735         Client *c;
 736         XDestroyWindowEvent *ev = &e->xdestroywindow;
 737
 738         if ((c = wintoclient(ev->window)))
 739                 unmanage(c, 1);
 740         else if ((c = wintosystrayicon(ev->window))) {
 741                 removesystrayicon(c);
 742                 resizebarwin(selmon);
 743                 updatesystray();
 744         }
 745 }
 746
 747 void
 748 detach(Client *c)
 749 {
 750         Client **tc;
 751
 752         for (tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
 753         *tc = c->next;
 754 }
 755
 756 void
 757 detachstack(Client *c)
 758 {
 759         Client **tc, *t;
 760
 761         for (tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
 762         *tc = c->snext;
 763
 764         if (c == c->mon->sel) {
 765                 for (t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
 766                 c->mon->sel = t;
 767         }
 768 }
 769
 770 Monitor *
 771 dirtomon(int dir)
 772 {
 773         Monitor *m = NULL;
 774
 775         if (dir > 0) {
 776                 if (!(m = selmon->next))
 777                         m = mons;
 778         } else if (selmon == mons)
 779                 for (m = mons; m->next; m = m->next);
 780         else
 781                 for (m = mons; m->next != selmon; m = m->next);
 782         return m;
 783 }
 784
 785 void
 786 drawbar(Monitor *m)
 787 {
 788         int x, w, sw = 0, stw = 0;
 789         int boxs = drw->fonts->h / 9;
 790         int boxw = drw->fonts->h / 6 + 2;
 791         unsigned int i, occ = 0, urg = 0;
 792         Client *c;
 793
 794         if(showsystray && m == systraytomon(m))
 795                 stw = getsystraywidth();
 796
 797         /* draw status first so it can be overdrawn by tags later */
 798         if (m == selmon) { /* status is only drawn on selected monitor */
 799                 drw_setscheme(drw, scheme[SchemeNorm]);
 800                 sw = TEXTW(stext) - lrpad / 2 + 2; /* 2px right padding */
 801                 drw_text(drw, m->ww - sw - stw, 0, sw, bh, lrpad / 2 - 2, stext, 0);
 802         }
 803
 804         resizebarwin(m);
 805         for (c = m->clients; c; c = c->next) {
 806                 occ |= c->tags;
 807                 if (c->isurgent)
 808                         urg |= c->tags;
 809         }
 810         x = 0;
 811         for (i = 0; i < LENGTH(tags); i++) {
 812                 w = TEXTW(tags[i]);
 813                 drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
 814                 drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
 815                 if (occ & 1 << i)
 816                         drw_rect(drw, x + boxs, boxs, boxw, boxw,
 817                                 m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
 818                                 urg & 1 << i);
 819                 x += w;
 820         }
 821         w = blw = TEXTW(m->ltsymbol);
 822         drw_setscheme(drw, scheme[SchemeNorm]);
 823         x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
 824
 825         if ((w = m->ww - sw - stw - x) > bh) {
 826                 if (m->sel) {
 827                         drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
 828                         drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
 829                         if (m->sel->isfloating)
 830                                 drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
 831                 } else {
 832                         drw_setscheme(drw, scheme[SchemeNorm]);
 833                         drw_rect(drw, x, 0, w, bh, 1, 1);
 834                 }
 835         }
 836         drw_map(drw, m->barwin, 0, 0, m->ww - stw, bh);
 837 }
 838
 839 void
 840 drawbars(void)
 841 {
 842         Monitor *m;
 843
 844         for (m = mons; m; m = m->next)
 845                 drawbar(m);
 846 }
 847
 848 void
 849 enternotify(XEvent *e)
 850 {
 851         Client *c;
 852         Monitor *m;
 853         XCrossingEvent *ev = &e->xcrossing;
 854
 855         if ((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
 856                 return;
 857         c = wintoclient(ev->window);
 858         m = c ? c->mon : wintomon(ev->window);
 859         if (m != selmon) {
 860                 unfocus(selmon->sel, 1);
 861                 selmon = m;
 862         } else if (!c || c == selmon->sel)
 863                 return;
 864         focus(c);
 865 }
 866
 867 void
 868 expose(XEvent *e)
 869 {
 870         Monitor *m;
 871         XExposeEvent *ev = &e->xexpose;
 872
 873         if (ev->count == 0 && (m = wintomon(ev->window))) {
 874                 drawbar(m);
 875                 if (m == selmon)
 876                         updatesystray();
 877         }
 878 }
 879
 880 void
 881 focus(Client *c)
 882 {
 883         if (!c || !ISVISIBLE(c))
 884                 for (c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
 885         if (selmon->sel && selmon->sel != c)
 886                 unfocus(selmon->sel, 0);
 887         if (c) {
 888                 if (c->mon != selmon)
 889                         selmon = c->mon;
 890                 if (c->isurgent)
 891                         seturgent(c, 0);
 892                 detachstack(c);
 893                 attachstack(c);
 894                 grabbuttons(c, 1);
 895                 XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
 896                 setfocus(c);
 897         } else {
 898                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 899                 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
 900         }
 901         selmon->sel = c;
 902         drawbars();
 903 }
 904
 905 /* there are some broken focus acquiring clients needing extra handling */
 906 void
 907 focusin(XEvent *e)
 908 {
 909         XFocusChangeEvent *ev = &e->xfocus;
 910
 911         if (selmon->sel && ev->window != selmon->sel->win)
 912                 setfocus(selmon->sel);
 913 }
 914
 915 void
 916 focusmon(const Arg *arg)
 917 {
 918         Monitor *m;
 919
 920         if (!mons->next)
 921                 return;
 922         if ((m = dirtomon(arg->i)) == selmon)
 923                 return;
 924         unfocus(selmon->sel, 0);
 925         selmon = m;
 926         focus(NULL);
 927 }
 928
 929 void
 930 focusstack(const Arg *arg)
 931 {
 932         Client *c = NULL, *i;
 933
 934         if (!selmon->sel)
 935                 return;
 936         if (arg->i > 0) {
 937                 for (c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
 938                 if (!c)
 939                         for (c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
 940         } else {
 941                 for (i = selmon->clients; i != selmon->sel; i = i->next)
 942                         if (ISVISIBLE(i))
 943                                 c = i;
 944                 if (!c)
 945                         for (; i; i = i->next)
 946                                 if (ISVISIBLE(i))
 947                                         c = i;
 948         }
 949         if (c) {
 950                 focus(c);
 951                 restack(selmon);
 952         }
 953 }
 954
 955 Atom
 956 getatomprop(Client *c, Atom prop)
 957 {
 958         int di;
 959         unsigned long dl;
 960         unsigned char *p = NULL;
 961         Atom da, atom = None;
 962         /* FIXME getatomprop should return the number of items and a pointer to
 963          * the stored data instead of this workaround */
 964         Atom req = XA_ATOM;
 965         if (prop == xatom[XembedInfo])
 966                 req = xatom[XembedInfo];
 967
 968         if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, req,
 969                 &da, &di, &dl, &dl, &p) == Success && p) {
 970                 atom = *(Atom *)p;
 971                 if (da == xatom[XembedInfo] && dl == 2)
 972                         atom = ((Atom *)p)[1];
 973                 XFree(p);
 974         }
 975         return atom;
 976 }
 977
 978 int
 979 getrootptr(int *x, int *y)
 980 {
 981         int di;
 982         unsigned int dui;
 983         Window dummy;
 984
 985         return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
 986 }
 987
 988 long
 989 getstate(Window w)
 990 {
 991         int format;
 992         long result = -1;
 993         unsigned char *p = NULL;
 994         unsigned long n, extra;
 995         Atom real;
 996
 997         if (XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
 998                 &real, &format, &n, &extra, (unsigned char **)&p) != Success)
 999                 return -1;
1000         if (n != 0)
1001                 result = *p;
1002         XFree(p);
1003         return result;
1004 }
1005
1006 unsigned int
1007 getsystraywidth()
1008 {
1009         unsigned int w = 0;
1010         Client *i;
1011         if(showsystray)
1012                 for(i = systray->icons; i; w += i->w + systrayspacing, i = i->next) ;
1013         return w ? w + systrayspacing : 1;
1014 }
1015
1016 int
1017 gettextprop(Window w, Atom atom, char *text, unsigned int size)
1018 {
1019         char **list = NULL;
1020         int n;
1021         XTextProperty name;
1022
1023         if (!text || size == 0)
1024                 return 0;
1025         text[0] = '\0';
1026         if (!XGetTextProperty(dpy, w, &name, atom) || !name.nitems)
1027                 return 0;
1028         if (name.encoding == XA_STRING)
1029                 strncpy(text, (char *)name.value, size - 1);
1030         else {
1031                 if (XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
1032                         strncpy(text, *list, size - 1);
1033                         XFreeStringList(list);
1034                 }
1035         }
1036         text[size - 1] = '\0';
1037         XFree(name.value);
1038         return 1;
1039 }
1040
1041 void
1042 grabbuttons(Client *c, int focused)
1043 {
1044         updatenumlockmask();
1045         {
1046                 unsigned int i, j;
1047                 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
1048                 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1049                 if (!focused)
1050                         XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
1051                                 BUTTONMASK, GrabModeSync, GrabModeSync, None, None);
1052                 for (i = 0; i < LENGTH(buttons); i++)
1053                         if (buttons[i].click == ClkClientWin)
1054                                 for (j = 0; j < LENGTH(modifiers); j++)
1055                                         XGrabButton(dpy, buttons[i].button,
1056                                                 buttons[i].mask | modifiers[j],
1057                                                 c->win, False, BUTTONMASK,
1058                                                 GrabModeAsync, GrabModeSync, None, None);
1059         }
1060 }
1061
1062 void
1063 grabkeys(void)
1064 {
1065         updatenumlockmask();
1066         {
1067                 unsigned int i, j;
1068                 unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
1069                 KeyCode code;
1070
1071                 XUngrabKey(dpy, AnyKey, AnyModifier, root);
1072                 for (i = 0; i < LENGTH(keys); i++)
1073                         if ((code = XKeysymToKeycode(dpy, keys[i].keysym)))
1074                                 for (j = 0; j < LENGTH(modifiers); j++)
1075                                         XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
1076                                                 True, GrabModeAsync, GrabModeAsync);
1077         }
1078 }
1079
1080 void
1081 incnmaster(const Arg *arg)
1082 {
1083         selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
1084         arrange(selmon);
1085 }
1086
1087 #ifdef XINERAMA
1088 static int
1089 isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info)
1090 {
1091         while (n--)
1092                 if (unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
1093                 && unique[n].width == info->width && unique[n].height == info->height)
1094                         return 0;
1095         return 1;
1096 }
1097 #endif /* XINERAMA */
1098
1099 void
1100 keypress(XEvent *e)
1101 {
1102         unsigned int i;
1103         KeySym keysym;
1104         XKeyEvent *ev;
1105
1106         ev = &e->xkey;
1107         keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
1108         for (i = 0; i < LENGTH(keys); i++)
1109                 if (keysym == keys[i].keysym
1110                 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
1111                 && keys[i].func)
1112                         keys[i].func(&(keys[i].arg));
1113 }
1114
1115 void
1116 killclient(const Arg *arg)
1117 {
1118         if (!selmon->sel)
1119                 return;
1120         if (!sendevent(selmon->sel->win, wmatom[WMDelete], NoEventMask, wmatom[WMDelete], CurrentTime, 0 , 0, 0)) {
1121                 XGrabServer(dpy);
1122                 XSetErrorHandler(xerrordummy);
1123                 XSetCloseDownMode(dpy, DestroyAll);
1124                 XKillClient(dpy, selmon->sel->win);
1125                 XSync(dpy, False);
1126                 XSetErrorHandler(xerror);
1127                 XUngrabServer(dpy);
1128         }
1129 }
1130
1131 void
1132 manage(Window w, XWindowAttributes *wa)
1133 {
1134         Client *c, *t = NULL;
1135         Window trans = None;
1136         XWindowChanges wc;
1137
1138         c = ecalloc(1, sizeof(Client));
1139         c->win = w;
1140         /* geometry */
1141         c->x = c->oldx = wa->x;
1142         c->y = c->oldy = wa->y;
1143         c->w = c->oldw = wa->width;
1144         c->h = c->oldh = wa->height;
1145         c->oldbw = wa->border_width;
1146
1147         updatetitle(c);
1148         if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
1149                 c->mon = t->mon;
1150                 c->tags = t->tags;
1151         } else {
1152                 c->mon = selmon;
1153                 applyrules(c);
1154         }
1155
1156         if (c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
1157                 c->x = c->mon->mx + c->mon->mw - WIDTH(c);
1158         if (c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
1159                 c->y = c->mon->my + c->mon->mh - HEIGHT(c);
1160         c->x = MAX(c->x, c->mon->mx);
1161         /* only fix client y-offset, if the client center might cover the bar */
1162         c->y = MAX(c->y, ((c->mon->by == c->mon->my) && (c->x + (c->w / 2) >= c->mon->wx)
1163                 && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
1164         c->bw = borderpx;
1165
1166         wc.border_width = c->bw;
1167         XConfigureWindow(dpy, w, CWBorderWidth, &wc);
1168         XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColBorder].pixel);
1169         configure(c); /* propagates border_width, if size doesn't change */
1170         updatewindowtype(c);
1171         updatesizehints(c);
1172         updatewmhints(c);
1173         c->sfx = c->x;
1174         c->sfy = c->y;
1175         c->sfw = c->w;
1176         c->sfh = c->h;
1177         XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1178         grabbuttons(c, 0);
1179         if (!c->isfloating)
1180                 c->isfloating = c->oldstate = trans != None || c->isfixed;
1181         if (c->isfloating)
1182                 XRaiseWindow(dpy, c->win);
1183         attach(c);
1184         attachstack(c);
1185         XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
1186                 (unsigned char *) &(c->win), 1);
1187         XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
1188         setclientstate(c, NormalState);
1189         if (c->mon == selmon)
1190                 unfocus(selmon->sel, 0);
1191         c->mon->sel = c;
1192         arrange(c->mon);
1193         XMapWindow(dpy, c->win);
1194         focus(NULL);
1195 }
1196
1197 void
1198 mappingnotify(XEvent *e)
1199 {
1200         XMappingEvent *ev = &e->xmapping;
1201
1202         XRefreshKeyboardMapping(ev);
1203         if (ev->request == MappingKeyboard)
1204                 grabkeys();
1205 }
1206
1207 void
1208 maprequest(XEvent *e)
1209 {
1210         static XWindowAttributes wa;
1211         XMapRequestEvent *ev = &e->xmaprequest;
1212         Client *i;
1213         if ((i = wintosystrayicon(ev->window))) {
1214                 sendevent(i->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_WINDOW_ACTIVATE, 0, systray->win, XEMBED_EMBEDDED_VERSION);
1215                 resizebarwin(selmon);
1216                 updatesystray();
1217         }
1218
1219         if (!XGetWindowAttributes(dpy, ev->window, &wa))
1220                 return;
1221         if (wa.override_redirect)
1222                 return;
1223         if (!wintoclient(ev->window))
1224                 manage(ev->window, &wa);
1225 }
1226
1227 void
1228 monocle(Monitor *m)
1229 {
1230         unsigned int n = 0;
1231         Client *c;
1232
1233         for (c = m->clients; c; c = c->next)
1234                 if (ISVISIBLE(c))
1235                         n++;
1236         if (n > 0) /* override layout symbol */
1237                 snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
1238         for (c = nexttiled(m->clients); c; c = nexttiled(c->next))
1239                 resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, 0);
1240 }
1241
1242 void
1243 motionnotify(XEvent *e)
1244 {
1245         static Monitor *mon = NULL;
1246         Monitor *m;
1247         XMotionEvent *ev = &e->xmotion;
1248
1249         if (ev->window != root)
1250                 return;
1251         if ((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
1252                 unfocus(selmon->sel, 1);
1253                 selmon = m;
1254                 focus(NULL);
1255         }
1256         mon = m;
1257 }
1258
1259 void
1260 movemouse(const Arg *arg)
1261 {
1262         int x, y, ocx, ocy, nx, ny;
1263         Client *c;
1264         Monitor *m;
1265         XEvent ev;
1266         Time lasttime = 0;
1267
1268         if (!(c = selmon->sel))
1269                 return;
1270         if (c->isfullscreen) /* no support moving fullscreen windows by mouse */
1271                 return;
1272         restack(selmon);
1273         ocx = c->x;
1274         ocy = c->y;
1275         if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1276                 None, cursor[CurMove]->cursor, CurrentTime) != GrabSuccess)
1277                 return;
1278         if (!getrootptr(&x, &y))
1279                 return;
1280         do {
1281                 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1282                 switch(ev.type) {
1283                 case ConfigureRequest:
1284                 case Expose:
1285                 case MapRequest:
1286                         handler[ev.type](&ev);
1287                         break;
1288                 case MotionNotify:
1289                         if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1290                                 continue;
1291                         lasttime = ev.xmotion.time;
1292
1293                         nx = ocx + (ev.xmotion.x - x);
1294                         ny = ocy + (ev.xmotion.y - y);
1295                         if (abs(selmon->wx - nx) < snap)
1296                                 nx = selmon->wx;
1297                         else if (abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
1298                                 nx = selmon->wx + selmon->ww - WIDTH(c);
1299                         if (abs(selmon->wy - ny) < snap)
1300                                 ny = selmon->wy;
1301                         else if (abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
1302                                 ny = selmon->wy + selmon->wh - HEIGHT(c);
1303                         if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1304                         && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
1305                                 togglefloating(NULL);
1306                         if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1307                                 resize(c, nx, ny, c->w, c->h, 1);
1308                         break;
1309                 }
1310         } while (ev.type != ButtonRelease);
1311         XUngrabPointer(dpy, CurrentTime);
1312         if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1313                 sendmon(c, m);
1314                 selmon = m;
1315                 focus(NULL);
1316         }
1317 }
1318
1319 Client *
1320 nexttiled(Client *c)
1321 {
1322         for (; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
1323         return c;
1324 }
1325
1326 void
1327 pop(Client *c)
1328 {
1329         detach(c);
1330         attach(c);
1331         focus(c);
1332         arrange(c->mon);
1333 }
1334
1335 void
1336 propertynotify(XEvent *e)
1337 {
1338         Client *c;
1339         Window trans;
1340         XPropertyEvent *ev = &e->xproperty;
1341
1342         if ((c = wintosystrayicon(ev->window))) {
1343                 if (ev->atom == XA_WM_NORMAL_HINTS) {
1344                         updatesizehints(c);
1345                         updatesystrayicongeom(c, c->w, c->h);
1346                 }
1347                 else
1348                         updatesystrayiconstate(c, ev);
1349                 resizebarwin(selmon);
1350                 updatesystray();
1351         }
1352         if ((ev->window == root) && (ev->atom == XA_WM_NAME))
1353                 updatestatus();
1354         else if (ev->state == PropertyDelete)
1355                 return; /* ignore */
1356         else if ((c = wintoclient(ev->window))) {
1357                 switch(ev->atom) {
1358                 default: break;
1359                 case XA_WM_TRANSIENT_FOR:
1360                         if (!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
1361                                 (c->isfloating = (wintoclient(trans)) != NULL))
1362                                 arrange(c->mon);
1363                         break;
1364                 case XA_WM_NORMAL_HINTS:
1365                         updatesizehints(c);
1366                         break;
1367                 case XA_WM_HINTS:
1368                         updatewmhints(c);
1369                         drawbars();
1370                         break;
1371                 }
1372                 if (ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
1373                         updatetitle(c);
1374                         if (c == c->mon->sel)
1375                                 drawbar(c->mon);
1376                 }
1377                 if (ev->atom == netatom[NetWMWindowType])
1378                         updatewindowtype(c);
1379         }
1380 }
1381
1382 void
1383 quit(const Arg *arg)
1384 {
1385         running = 0;
1386 }
1387
1388 Monitor *
1389 recttomon(int x, int y, int w, int h)
1390 {
1391         Monitor *m, *r = selmon;
1392         int a, area = 0;
1393
1394         for (m = mons; m; m = m->next)
1395                 if ((a = INTERSECT(x, y, w, h, m)) > area) {
1396                         area = a;
1397                         r = m;
1398                 }
1399         return r;
1400 }
1401
1402 void
1403 removesystrayicon(Client *i)
1404 {
1405         Client **ii;
1406
1407         if (!showsystray || !i)
1408                 return;
1409         for (ii = &systray->icons; *ii && *ii != i; ii = &(*ii)->next);
1410         if (ii)
1411                 *ii = i->next;
1412         free(i);
1413 }
1414
1415
1416 void
1417 resize(Client *c, int x, int y, int w, int h, int interact)
1418 {
1419         if (applysizehints(c, &x, &y, &w, &h, interact))
1420                 resizeclient(c, x, y, w, h);
1421 }
1422
1423 void
1424 resizebarwin(Monitor *m) {
1425         unsigned int w = m->ww;
1426         if (showsystray && m == systraytomon(m))
1427                 w -= getsystraywidth();
1428         XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, w, bh);
1429 }
1430
1431 void
1432 resizeclient(Client *c, int x, int y, int w, int h)
1433 {
1434         XWindowChanges wc;
1435
1436         c->oldx = c->x; c->x = wc.x = x;
1437         c->oldy = c->y; c->y = wc.y = y;
1438         c->oldw = c->w; c->w = wc.width = w;
1439         c->oldh = c->h; c->h = wc.height = h;
1440         wc.border_width = c->bw;
1441         XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
1442         configure(c);
1443         XSync(dpy, False);
1444 }
1445
1446 void
1447 resizemouse(const Arg *arg)
1448 {
1449         int ocx, ocy, nw, nh;
1450         Client *c;
1451         Monitor *m;
1452         XEvent ev;
1453         Time lasttime = 0;
1454
1455         if (!(c = selmon->sel))
1456                 return;
1457         if (c->isfullscreen) /* no support resizing fullscreen windows by mouse */
1458                 return;
1459         restack(selmon);
1460         ocx = c->x;
1461         ocy = c->y;
1462         if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
1463                 None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
1464                 return;
1465         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1466         do {
1467                 XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
1468                 switch(ev.type) {
1469                 case ConfigureRequest:
1470                 case Expose:
1471                 case MapRequest:
1472                         handler[ev.type](&ev);
1473                         break;
1474                 case MotionNotify:
1475                         if ((ev.xmotion.time - lasttime) <= (1000 / 60))
1476                                 continue;
1477                         lasttime = ev.xmotion.time;
1478
1479                         nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
1480                         nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
1481                         if (c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
1482                         && c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
1483                         {
1484                                 if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
1485                                 && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
1486                                         togglefloating(NULL);
1487                         }
1488                         if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
1489                                 resize(c, c->x, c->y, nw, nh, 1);
1490                         break;
1491                 }
1492         } while (ev.type != ButtonRelease);
1493         XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
1494         XUngrabPointer(dpy, CurrentTime);
1495         while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1496         if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
1497                 sendmon(c, m);
1498                 selmon = m;
1499                 focus(NULL);
1500         }
1501 }
1502
1503 void
1504 resizerequest(XEvent *e)
1505 {
1506         XResizeRequestEvent *ev = &e->xresizerequest;
1507         Client *i;
1508
1509         if ((i = wintosystrayicon(ev->window))) {
1510                 updatesystrayicongeom(i, ev->width, ev->height);
1511                 resizebarwin(selmon);
1512                 updatesystray();
1513         }
1514 }
1515
1516 void
1517 restack(Monitor *m)
1518 {
1519         Client *c;
1520         XEvent ev;
1521         XWindowChanges wc;
1522
1523         drawbar(m);
1524         if (!m->sel)
1525                 return;
1526         if (m->sel->isfloating || !m->lt[m->sellt]->arrange)
1527                 XRaiseWindow(dpy, m->sel->win);
1528         if (m->lt[m->sellt]->arrange) {
1529                 wc.stack_mode = Below;
1530                 wc.sibling = m->barwin;
1531                 for (c = m->stack; c; c = c->snext)
1532                         if (!c->isfloating && ISVISIBLE(c)) {
1533                                 XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
1534                                 wc.sibling = c->win;
1535                         }
1536         }
1537         XSync(dpy, False);
1538         while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
1539 }
1540
1541 void
1542 run(void)
1543 {
1544         XEvent ev;
1545         /* main event loop */
1546         XSync(dpy, False);
1547         while (running && !XNextEvent(dpy, &ev))
1548                 if (handler[ev.type])
1549                         handler[ev.type](&ev); /* call handler */
1550 }
1551
1552 void
1553 scan(void)
1554 {
1555         unsigned int i, num;
1556         Window d1, d2, *wins = NULL;
1557         XWindowAttributes wa;
1558
1559         if (XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
1560                 for (i = 0; i < num; i++) {
1561                         if (!XGetWindowAttributes(dpy, wins[i], &wa)
1562                         || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
1563                                 continue;
1564                         if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
1565                                 manage(wins[i], &wa);
1566                 }
1567                 for (i = 0; i < num; i++) { /* now the transients */
1568                         if (!XGetWindowAttributes(dpy, wins[i], &wa))
1569                                 continue;
1570                         if (XGetTransientForHint(dpy, wins[i], &d1)
1571                         && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
1572                                 manage(wins[i], &wa);
1573                 }
1574                 if (wins)
1575                         XFree(wins);
1576         }
1577 }
1578
1579 void
1580 sendmon(Client *c, Monitor *m)
1581 {
1582         if (c->mon == m)
1583                 return;
1584         unfocus(c, 1);
1585         detach(c);
1586         detachstack(c);
1587         c->mon = m;
1588         c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
1589         attach(c);
1590         attachstack(c);
1591         focus(NULL);
1592         arrange(NULL);
1593 }
1594
1595 void
1596 setclientstate(Client *c, long state)
1597 {
1598         long data[] = { state, None };
1599
1600         XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
1601                 PropModeReplace, (unsigned char *)data, 2);
1602 }
1603
1604 int
1605 sendevent(Window w, Atom proto, int mask, long d0, long d1, long d2, long d3, long d4)
1606 {
1607         int n;
1608         Atom *protocols, mt;
1609         int exists = 0;
1610         XEvent ev;
1611
1612         if (proto == wmatom[WMTakeFocus] || proto == wmatom[WMDelete]) {
1613                 mt = wmatom[WMProtocols];
1614                 if (XGetWMProtocols(dpy, w, &protocols, &n)) {
1615                         while (!exists && n--)
1616                                 exists = protocols[n] == proto;
1617                         XFree(protocols);
1618                 }
1619         }
1620         else {
1621                 exists = True;
1622                 mt = proto;
1623         }
1624         if (exists) {
1625                 ev.type = ClientMessage;
1626                 ev.xclient.window = w;
1627                 ev.xclient.message_type = mt;
1628                 ev.xclient.format = 32;
1629                 ev.xclient.data.l[0] = d0;
1630                 ev.xclient.data.l[1] = d1;
1631                 ev.xclient.data.l[2] = d2;
1632                 ev.xclient.data.l[3] = d3;
1633                 ev.xclient.data.l[4] = d4;
1634                 XSendEvent(dpy, w, False, mask, &ev);
1635         }
1636         return exists;
1637 }
1638
1639 void
1640 setfocus(Client *c)
1641 {
1642         if (!c->neverfocus) {
1643                 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
1644                 XChangeProperty(dpy, root, netatom[NetActiveWindow],
1645                         XA_WINDOW, 32, PropModeReplace,
1646                         (unsigned char *) &(c->win), 1);
1647         }
1648         sendevent(c->win, wmatom[WMTakeFocus], NoEventMask, wmatom[WMTakeFocus], CurrentTime, 0, 0, 0);
1649 }
1650
1651 void
1652 setfullscreen(Client *c, int fullscreen)
1653 {
1654         if (fullscreen && !c->isfullscreen) {
1655                 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1656                         PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
1657                 c->isfullscreen = 1;
1658                 c->oldstate = c->isfloating;
1659                 c->oldbw = c->bw;
1660                 c->bw = 0;
1661                 c->isfloating = 1;
1662                 resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
1663                 XRaiseWindow(dpy, c->win);
1664         } else if (!fullscreen && c->isfullscreen){
1665                 XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
1666                         PropModeReplace, (unsigned char*)0, 0);
1667                 c->isfullscreen = 0;
1668                 c->isfloating = c->oldstate;
1669                 c->bw = c->oldbw;
1670                 c->x = c->oldx;
1671                 c->y = c->oldy;
1672                 c->w = c->oldw;
1673                 c->h = c->oldh;
1674                 resizeclient(c, c->x, c->y, c->w, c->h);
1675                 arrange(c->mon);
1676         }
1677 }
1678
1679 void
1680 setlayout(const Arg *arg)
1681 {
1682         if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
1683                 selmon->sellt ^= 1;
1684         if (arg && arg->v)
1685                 selmon->lt[selmon->sellt] = (Layout *)arg->v;
1686         strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
1687         if (selmon->sel)
1688                 arrange(selmon);
1689         else
1690                 drawbar(selmon);
1691 }
1692
1693 /* arg > 1.0 will set mfact absolutely */
1694 void
1695 setmfact(const Arg *arg)
1696 {
1697         float f;
1698
1699         if (!arg || !selmon->lt[selmon->sellt]->arrange)
1700                 return;
1701         f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
1702         if (f < 0.1 || f > 0.9)
1703                 return;
1704         selmon->mfact = f;
1705         arrange(selmon);
1706 }
1707
1708 void
1709 setup(void)
1710 {
1711         int i;
1712         XSetWindowAttributes wa;
1713         Atom utf8string;
1714
1715         /* clean up any zombies immediately */
1716         sigchld(0);
1717
1718         /* init screen */
1719         screen = DefaultScreen(dpy);
1720         sw = DisplayWidth(dpy, screen);
1721         sh = DisplayHeight(dpy, screen);
1722         root = RootWindow(dpy, screen);
1723         drw = drw_create(dpy, screen, root, sw, sh);
1724         if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
1725                 die("no fonts could be loaded.");
1726         lrpad = drw->fonts->h;
1727         bh = drw->fonts->h + 2;
1728         updategeom();
1729         /* init atoms */
1730         utf8string = XInternAtom(dpy, "UTF8_STRING", False);
1731         wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
1732         wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
1733         wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
1734         wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
1735         netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
1736         netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
1737         netatom[NetSystemTray] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_S0", False);
1738         netatom[NetSystemTrayOP] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_OPCODE", False);
1739         netatom[NetSystemTrayOrientation] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_ORIENTATION", False);
1740         netatom[NetSystemTrayOrientationHorz] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_ORIENTATION_HORZ", False);
1741         netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
1742         netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
1743         netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
1744         netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
1745         netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
1746         netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
1747         netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
1748         xatom[Manager] = XInternAtom(dpy, "MANAGER", False);
1749         xatom[Xembed] = XInternAtom(dpy, "_XEMBED", False);
1750         xatom[XembedInfo] = XInternAtom(dpy, "_XEMBED_INFO", False);
1751         /* init cursors */
1752         cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
1753         cursor[CurResize] = drw_cur_create(drw, XC_sizing);
1754         cursor[CurMove] = drw_cur_create(drw, XC_fleur);
1755         /* init appearance */
1756         scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
1757         for (i = 0; i < LENGTH(colors); i++)
1758                 scheme[i] = drw_scm_create(drw, colors[i], 3);
1759         /* init system tray */
1760         updatesystray();
1761         /* init bars */
1762         updatebars();
1763         updatestatus();
1764         /* supporting window for NetWMCheck */
1765         wmcheckwin = XCreateSimpleWindow(dpy, root, 0, 0, 1, 1, 0, 0, 0);
1766         XChangeProperty(dpy, wmcheckwin, netatom[NetWMCheck], XA_WINDOW, 32,
1767                 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1768         XChangeProperty(dpy, wmcheckwin, netatom[NetWMName], utf8string, 8,
1769                 PropModeReplace, (unsigned char *) "dwm", 3);
1770         XChangeProperty(dpy, root, netatom[NetWMCheck], XA_WINDOW, 32,
1771                 PropModeReplace, (unsigned char *) &wmcheckwin, 1);
1772         /* EWMH support per view */
1773         XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
1774                 PropModeReplace, (unsigned char *) netatom, NetLast);
1775         XDeleteProperty(dpy, root, netatom[NetClientList]);
1776         /* select events */
1777         wa.cursor = cursor[CurNormal]->cursor;
1778         wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
1779                 |ButtonPressMask|PointerMotionMask|EnterWindowMask
1780                 |LeaveWindowMask|StructureNotifyMask|PropertyChangeMask;
1781         XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
1782         XSelectInput(dpy, root, wa.event_mask);
1783         grabkeys();
1784         focus(NULL);
1785 }
1786
1787
1788 void
1789 seturgent(Client *c, int urg)
1790 {
1791         XWMHints *wmh;
1792
1793         c->isurgent = urg;
1794         if (!(wmh = XGetWMHints(dpy, c->win)))
1795                 return;
1796         wmh->flags = urg ? (wmh->flags | XUrgencyHint) : (wmh->flags & ~XUrgencyHint);
1797         XSetWMHints(dpy, c->win, wmh);
1798         XFree(wmh);
1799 }
1800
1801 void
1802 showhide(Client *c)
1803 {
1804         if (!c)
1805                 return;
1806         if (ISVISIBLE(c)) {
1807                 /* show clients top down */
1808                 XMoveWindow(dpy, c->win, c->x, c->y);
1809                 if ((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) && !c->isfullscreen)
1810                         resize(c, c->x, c->y, c->w, c->h, 0);
1811                 showhide(c->snext);
1812         } else {
1813                 /* hide clients bottom up */
1814                 showhide(c->snext);
1815                 XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
1816         }
1817 }
1818
1819 void
1820 sigchld(int unused)
1821 {
1822         if (signal(SIGCHLD, sigchld) == SIG_ERR)
1823                 die("can't install SIGCHLD handler:");
1824         while (0 < waitpid(-1, NULL, WNOHANG));
1825 }
1826
1827 void
1828 spawn(const Arg *arg)
1829 {
1830         if (arg->v == dmenucmd)
1831                 dmenumon[0] = '0' + selmon->num;
1832         if (fork() == 0) {
1833                 if (dpy)
1834                         close(ConnectionNumber(dpy));
1835                 setsid();
1836                 execvp(((char **)arg->v)[0], (char **)arg->v);
1837                 fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
1838                 perror(" failed");
1839                 exit(EXIT_SUCCESS);
1840         }
1841 }
1842
1843 void
1844 tag(const Arg *arg)
1845 {
1846         if (selmon->sel && arg->ui & TAGMASK) {
1847                 selmon->sel->tags = arg->ui & TAGMASK;
1848                 focus(NULL);
1849                 arrange(selmon);
1850         }
1851 }
1852
1853 void
1854 tagmon(const Arg *arg)
1855 {
1856         if (!selmon->sel || !mons->next)
1857                 return;
1858         sendmon(selmon->sel, dirtomon(arg->i));
1859 }
1860
1861 void
1862 tile(Monitor *m)
1863 {
1864         unsigned int i, n, h, mw, my, ty;
1865         Client *c;
1866
1867         for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
1868         if (n == 0)
1869                 return;
1870
1871         if (n > m->nmaster)
1872                 mw = m->nmaster ? m->ww * m->mfact : 0;
1873         else
1874                 mw = m->ww;
1875         for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
1876                 if (i < m->nmaster) {
1877                         h = (m->wh - my) / (MIN(n, m->nmaster) - i);
1878                         resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
1879                         my += HEIGHT(c);
1880                 } else {
1881                         h = (m->wh - ty) / (n - i);
1882                         resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
1883                         ty += HEIGHT(c);
1884                 }
1885 }
1886
1887 void
1888 togglebar(const Arg *arg)
1889 {
1890         selmon->showbar = !selmon->showbar;
1891         updatebarpos(selmon);
1892         resizebarwin(selmon);
1893         if (showsystray) {
1894                 XWindowChanges wc;
1895                 if (!selmon->showbar)
1896                         wc.y = -bh;
1897                 else if (selmon->showbar) {
1898                         wc.y = 0;
1899                         if (!selmon->topbar)
1900                                 wc.y = selmon->mh - bh;
1901                 }
1902                 XConfigureWindow(dpy, systray->win, CWY, &wc);
1903         }
1904         arrange(selmon);
1905 }
1906
1907 void
1908 togglefloating(const Arg *arg)
1909 {
1910         if (!selmon->sel)
1911                 return;
1912         if (selmon->sel->isfullscreen) /* no support for fullscreen windows */
1913                 return;
1914         selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
1915         if (selmon->sel->isfloating)
1916                 /* restore last known float dimensions */
1917                 resize(selmon->sel, selmon->sel->sfx, selmon->sel->sfy,
1918                        selmon->sel->sfw, selmon->sel->sfh, False);
1919         else {
1920                 /* save last known float dimensions */
1921                 selmon->sel->sfx = selmon->sel->x;
1922                 selmon->sel->sfy = selmon->sel->y;
1923                 selmon->sel->sfw = selmon->sel->w;
1924                 selmon->sel->sfh = selmon->sel->h;
1925         }
1926         arrange(selmon);
1927 }
1928
1929 void
1930 toggletag(const Arg *arg)
1931 {
1932         unsigned int newtags;
1933
1934         if (!selmon->sel)
1935                 return;
1936         newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
1937         if (newtags) {
1938                 selmon->sel->tags = newtags;
1939                 focus(NULL);
1940                 arrange(selmon);
1941         }
1942 }
1943
1944 void
1945 toggleview(const Arg *arg)
1946 {
1947         unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
1948
1949         if (newtagset) {
1950                 selmon->tagset[selmon->seltags] = newtagset;
1951                 focus(NULL);
1952                 arrange(selmon);
1953         }
1954 }
1955
1956 void
1957 unfocus(Client *c, int setfocus)
1958 {
1959         if (!c)
1960                 return;
1961         grabbuttons(c, 0);
1962         XSetWindowBorder(dpy, c->win, scheme[SchemeNorm][ColBorder].pixel);
1963         if (setfocus) {
1964                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
1965                 XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
1966         }
1967 }
1968
1969 void
1970 unmanage(Client *c, int destroyed)
1971 {
1972         Monitor *m = c->mon;
1973         XWindowChanges wc;
1974
1975         detach(c);
1976         detachstack(c);
1977         if (!destroyed) {
1978                 wc.border_width = c->oldbw;
1979                 XGrabServer(dpy); /* avoid race conditions */
1980                 XSetErrorHandler(xerrordummy);
1981                 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
1982                 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
1983                 setclientstate(c, WithdrawnState);
1984                 XSync(dpy, False);
1985                 XSetErrorHandler(xerror);
1986                 XUngrabServer(dpy);
1987         }
1988         free(c);
1989         focus(NULL);
1990         updateclientlist();
1991         arrange(m);
1992 }
1993
1994 void
1995 unmapnotify(XEvent *e)
1996 {
1997         Client *c;
1998         XUnmapEvent *ev = &e->xunmap;
1999
2000         if ((c = wintoclient(ev->window))) {
2001                 if (ev->send_event)
2002                         setclientstate(c, WithdrawnState);
2003                 else
2004                         unmanage(c, 0);
2005         }
2006         else if ((c = wintosystrayicon(ev->window))) {
2007                 /* KLUDGE! sometimes icons occasionally unmap their windows, but do
2008                  * _not_ destroy them. We map those windows back */
2009                 XMapRaised(dpy, c->win);
2010                 updatesystray();
2011         }
2012 }
2013
2014 void
2015 updatebars(void)
2016 {
2017         unsigned int w;
2018         Monitor *m;
2019         XSetWindowAttributes wa = {
2020                 .override_redirect = True,
2021                 .background_pixmap = ParentRelative,
2022                 .event_mask = ButtonPressMask|ExposureMask
2023         };
2024         XClassHint ch = {"dwm", "dwm"};
2025         for (m = mons; m; m = m->next) {
2026                 if (m->barwin)
2027                         continue;
2028                 w = m->ww;
2029                 if (showsystray && m == systraytomon(m))
2030                         w -= getsystraywidth();
2031                 m->barwin = XCreateWindow(dpy, root, m->wx, m->by, w, bh, 0, DefaultDepth(dpy, screen),
2032                                 CopyFromParent, DefaultVisual(dpy, screen),
2033                                 CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
2034                 XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
2035                 if (showsystray && m == systraytomon(m))
2036                         XMapRaised(dpy, systray->win);
2037                 XMapRaised(dpy, m->barwin);
2038                 XSetClassHint(dpy, m->barwin, &ch);
2039         }
2040 }
2041
2042 void
2043 updatebarpos(Monitor *m)
2044 {
2045         m->wy = m->my;
2046         m->wh = m->mh;
2047         if (m->showbar) {
2048                 m->wh -= bh;
2049                 m->by = m->topbar ? m->wy : m->wy + m->wh;
2050                 m->wy = m->topbar ? m->wy + bh : m->wy;
2051         } else
2052                 m->by = -bh;
2053 }
2054
2055 void
2056 updateclientlist()
2057 {
2058         Client *c;
2059         Monitor *m;
2060
2061         XDeleteProperty(dpy, root, netatom[NetClientList]);
2062         for (m = mons; m; m = m->next)
2063                 for (c = m->clients; c; c = c->next)
2064                         XChangeProperty(dpy, root, netatom[NetClientList],
2065                                 XA_WINDOW, 32, PropModeAppend,
2066                                 (unsigned char *) &(c->win), 1);
2067 }
2068
2069 int
2070 updategeom(void)
2071 {
2072         int dirty = 0;
2073
2074 #ifdef XINERAMA
2075         if (XineramaIsActive(dpy)) {
2076                 int i, j, n, nn;
2077                 Client *c;
2078                 Monitor *m;
2079                 XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
2080                 XineramaScreenInfo *unique = NULL;
2081
2082                 for (n = 0, m = mons; m; m = m->next, n++);
2083                 /* only consider unique geometries as separate screens */
2084                 unique = ecalloc(nn, sizeof(XineramaScreenInfo));
2085                 for (i = 0, j = 0; i < nn; i++)
2086                         if (isuniquegeom(unique, j, &info[i]))
2087                                 memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
2088                 XFree(info);
2089                 nn = j;
2090                 if (n <= nn) { /* new monitors available */
2091                         for (i = 0; i < (nn - n); i++) {
2092                                 for (m = mons; m && m->next; m = m->next);
2093                                 if (m)
2094                                         m->next = createmon();
2095                                 else
2096                                         mons = createmon();
2097                         }
2098                         for (i = 0, m = mons; i < nn && m; m = m->next, i++)
2099                                 if (i >= n
2100                                 || unique[i].x_org != m->mx || unique[i].y_org != m->my
2101                                 || unique[i].width != m->mw || unique[i].height != m->mh)
2102                                 {
2103                                         dirty = 1;
2104                                         m->num = i;
2105                                         m->mx = m->wx = unique[i].x_org;
2106                                         m->my = m->wy = unique[i].y_org;
2107                                         m->mw = m->ww = unique[i].width;
2108                                         m->mh = m->wh = unique[i].height;
2109                                         updatebarpos(m);
2110                                 }
2111                 } else { /* less monitors available nn < n */
2112                         for (i = nn; i < n; i++) {
2113                                 for (m = mons; m && m->next; m = m->next);
2114                                 while ((c = m->clients)) {
2115                                         dirty = 1;
2116                                         m->clients = c->next;
2117                                         detachstack(c);
2118                                         c->mon = mons;
2119                                         attach(c);
2120                                         attachstack(c);
2121                                 }
2122                                 if (m == selmon)
2123                                         selmon = mons;
2124                                 cleanupmon(m);
2125                         }
2126                 }
2127                 free(unique);
2128         } else
2129 #endif /* XINERAMA */
2130         { /* default monitor setup */
2131                 if (!mons)
2132                         mons = createmon();
2133                 if (mons->mw != sw || mons->mh != sh) {
2134                         dirty = 1;
2135                         mons->mw = mons->ww = sw;
2136                         mons->mh = mons->wh = sh;
2137                         updatebarpos(mons);
2138                 }
2139         }
2140         if (dirty) {
2141                 selmon = mons;
2142                 selmon = wintomon(root);
2143         }
2144         return dirty;
2145 }
2146
2147 void
2148 updatenumlockmask(void)
2149 {
2150         unsigned int i, j;
2151         XModifierKeymap *modmap;
2152
2153         numlockmask = 0;
2154         modmap = XGetModifierMapping(dpy);
2155         for (i = 0; i < 8; i++)
2156                 for (j = 0; j < modmap->max_keypermod; j++)
2157                         if (modmap->modifiermap[i * modmap->max_keypermod + j]
2158                                 == XKeysymToKeycode(dpy, XK_Num_Lock))
2159                                 numlockmask = (1 << i);
2160         XFreeModifiermap(modmap);
2161 }
2162
2163 void
2164 updatesizehints(Client *c)
2165 {
2166         long msize;
2167         XSizeHints size;
2168
2169         if (!XGetWMNormalHints(dpy, c->win, &size, &msize))
2170                 /* size is uninitialized, ensure that size.flags aren't used */
2171                 size.flags = PSize;
2172         if (size.flags & PBaseSize) {
2173                 c->basew = size.base_width;
2174                 c->baseh = size.base_height;
2175         } else if (size.flags & PMinSize) {
2176                 c->basew = size.min_width;
2177                 c->baseh = size.min_height;
2178         } else
2179                 c->basew = c->baseh = 0;
2180         if (size.flags & PResizeInc) {
2181                 c->incw = size.width_inc;
2182                 c->inch = size.height_inc;
2183         } else
2184                 c->incw = c->inch = 0;
2185         if (size.flags & PMaxSize) {
2186                 c->maxw = size.max_width;
2187                 c->maxh = size.max_height;
2188         } else
2189                 c->maxw = c->maxh = 0;
2190         if (size.flags & PMinSize) {
2191                 c->minw = size.min_width;
2192                 c->minh = size.min_height;
2193         } else if (size.flags & PBaseSize) {
2194                 c->minw = size.base_width;
2195                 c->minh = size.base_height;
2196         } else
2197                 c->minw = c->minh = 0;
2198         if (size.flags & PAspect) {
2199                 c->mina = (float)size.min_aspect.y / size.min_aspect.x;
2200                 c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
2201         } else
2202                 c->maxa = c->mina = 0.0;
2203         c->isfixed = (c->maxw && c->maxh && c->maxw == c->minw && c->maxh == c->minh);
2204 }
2205
2206 void
2207 updatestatus(void)
2208 {
2209         if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
2210                 strcpy(stext, "dwm-"VERSION);
2211         drawbar(selmon);
2212         updatesystray();
2213 }
2214
2215 void
2216 updatesystrayicongeom(Client *i, int w, int h)
2217 {
2218         if (i) {
2219                 i->h = bh;
2220                 if (w == h)
2221                         i->w = bh;
2222                 else if (h == bh)
2223                         i->w = w;
2224                 else
2225                         i->w = (int) ((float)bh * ((float)w / (float)h));
2226                 applysizehints(i, &(i->x), &(i->y), &(i->w), &(i->h), False);
2227                 /* force icons into the systray dimenons if they don't want to */
2228                 if (i->h > bh) {
2229                         if (i->w == i->h)
2230                                 i->w = bh;
2231                         else
2232                                 i->w = (int) ((float)bh * ((float)i->w / (float)i->h));
2233                         i->h = bh;
2234                 }
2235         }
2236 }
2237
2238 void
2239 updatesystrayiconstate(Client *i, XPropertyEvent *ev)
2240 {
2241         long flags;
2242         int code = 0;
2243
2244         if (!showsystray || !i || ev->atom != xatom[XembedInfo] ||
2245                         !(flags = getatomprop(i, xatom[XembedInfo])))
2246                 return;
2247
2248         if (flags & XEMBED_MAPPED && !i->tags) {
2249                 i->tags = 1;
2250                 code = XEMBED_WINDOW_ACTIVATE;
2251                 XMapRaised(dpy, i->win);
2252                 setclientstate(i, NormalState);
2253         }
2254         else if (!(flags & XEMBED_MAPPED) && i->tags) {
2255                 i->tags = 0;
2256                 code = XEMBED_WINDOW_DEACTIVATE;
2257                 XUnmapWindow(dpy, i->win);
2258                 setclientstate(i, WithdrawnState);
2259         }
2260         else
2261                 return;
2262         sendevent(i->win, xatom[Xembed], StructureNotifyMask, CurrentTime, code, 0,
2263                         systray->win, XEMBED_EMBEDDED_VERSION);
2264 }
2265
2266 void
2267 updatesystray(void)
2268 {
2269         XSetWindowAttributes wa;
2270         XWindowChanges wc;
2271         Client *i;
2272         Monitor *m = systraytomon(NULL);
2273         unsigned int x = m->mx + m->mw;
2274         unsigned int w = 1;
2275
2276         if (!showsystray)
2277                 return;
2278         if (!systray) {
2279                 /* init systray */
2280                 if (!(systray = (Systray *)calloc(1, sizeof(Systray))))
2281                         die("fatal: could not malloc() %u bytes\n", sizeof(Systray));
2282                 systray->win = XCreateSimpleWindow(dpy, root, x, m->by, w, bh, 0, 0, scheme[SchemeSel][ColBg].pixel);
2283                 wa.event_mask        = ButtonPressMask | ExposureMask;
2284                 wa.override_redirect = True;
2285                 wa.background_pixel  = scheme[SchemeNorm][ColBg].pixel;
2286                 XSelectInput(dpy, systray->win, SubstructureNotifyMask);
2287                 XChangeProperty(dpy, systray->win, netatom[NetSystemTrayOrientation], XA_CARDINAL, 32,
2288                                 PropModeReplace, (unsigned char *)&netatom[NetSystemTrayOrientationHorz], 1);
2289                 XChangeWindowAttributes(dpy, systray->win, CWEventMask|CWOverrideRedirect|CWBackPixel, &wa);
2290                 XMapRaised(dpy, systray->win);
2291                 XSetSelectionOwner(dpy, netatom[NetSystemTray], systray->win, CurrentTime);
2292                 if (XGetSelectionOwner(dpy, netatom[NetSystemTray]) == systray->win) {
2293                         sendevent(root, xatom[Manager], StructureNotifyMask, CurrentTime, netatom[NetSystemTray], systray->win, 0, 0);
2294                         XSync(dpy, False);
2295                 }
2296                 else {
2297                         fprintf(stderr, "dwm: unable to obtain system tray.\n");
2298                         free(systray);
2299                         systray = NULL;
2300                         return;
2301                 }
2302         }
2303         for (w = 0, i = systray->icons; i; i = i->next) {
2304                 /* make sure the background color stays the same */
2305                 wa.background_pixel  = scheme[SchemeNorm][ColBg].pixel;
2306                 XChangeWindowAttributes(dpy, i->win, CWBackPixel, &wa);
2307                 XMapRaised(dpy, i->win);
2308                 w += systrayspacing;
2309                 i->x = w;
2310                 XMoveResizeWindow(dpy, i->win, i->x, 0, i->w, i->h);
2311                 w += i->w;
2312                 if (i->mon != m)
2313                         i->mon = m;
2314         }
2315         w = w ? w + systrayspacing : 1;
2316         x -= w;
2317         XMoveResizeWindow(dpy, systray->win, x, m->by, w, bh);
2318         wc.x = x; wc.y = m->by; wc.width = w; wc.height = bh;
2319         wc.stack_mode = Above; wc.sibling = m->barwin;
2320         XConfigureWindow(dpy, systray->win, CWX|CWY|CWWidth|CWHeight|CWSibling|CWStackMode, &wc);
2321         XMapWindow(dpy, systray->win);
2322         XMapSubwindows(dpy, systray->win);
2323         /* redraw background */
2324         XSetForeground(dpy, drw->gc, scheme[SchemeNorm][ColBg].pixel);
2325         XFillRectangle(dpy, systray->win, drw->gc, 0, 0, w, bh);
2326         XSync(dpy, False);
2327 }
2328
2329 void
2330 updatetitle(Client *c)
2331 {
2332         if (!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
2333                 gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
2334         if (c->name[0] == '\0') /* hack to mark broken clients */
2335                 strcpy(c->name, broken);
2336 }
2337
2338 void
2339 updatewindowtype(Client *c)
2340 {
2341         Atom state = getatomprop(c, netatom[NetWMState]);
2342         Atom wtype = getatomprop(c, netatom[NetWMWindowType]);
2343
2344         if (state == netatom[NetWMFullscreen])
2345                 setfullscreen(c, 1);
2346         if (wtype == netatom[NetWMWindowTypeDialog])
2347                 c->isfloating = 1;
2348 }
2349
2350 void
2351 updatewmhints(Client *c)
2352 {
2353         XWMHints *wmh;
2354
2355         if ((wmh = XGetWMHints(dpy, c->win))) {
2356                 if (c == selmon->sel && wmh->flags & XUrgencyHint) {
2357                         wmh->flags &= ~XUrgencyHint;
2358                         XSetWMHints(dpy, c->win, wmh);
2359                 } else
2360                         c->isurgent = (wmh->flags & XUrgencyHint) ? 1 : 0;
2361                 if (wmh->flags & InputHint)
2362                         c->neverfocus = !wmh->input;
2363                 else
2364                         c->neverfocus = 0;
2365                 XFree(wmh);
2366         }
2367 }
2368
2369 void
2370 view(const Arg *arg)
2371 {
2372         if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
2373                 return;
2374         selmon->seltags ^= 1; /* toggle sel tagset */
2375         if (arg->ui & TAGMASK)
2376                 selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
2377         focus(NULL);
2378         arrange(selmon);
2379 }
2380
2381 Client *
2382 wintoclient(Window w)
2383 {
2384         Client *c;
2385         Monitor *m;
2386
2387         for (m = mons; m; m = m->next)
2388                 for (c = m->clients; c; c = c->next)
2389                         if (c->win == w)
2390                                 return c;
2391         return NULL;
2392 }
2393
2394 Client *
2395 wintosystrayicon(Window w) {
2396         Client *i = NULL;
2397
2398         if (!showsystray || !w)
2399                 return i;
2400         for (i = systray->icons; i && i->win != w; i = i->next) ;
2401         return i;
2402 }
2403
2404 Monitor *
2405 wintomon(Window w)
2406 {
2407         int x, y;
2408         Client *c;
2409         Monitor *m;
2410
2411         if (w == root && getrootptr(&x, &y))
2412                 return recttomon(x, y, 1, 1);
2413         for (m = mons; m; m = m->next)
2414                 if (w == m->barwin)
2415                         return m;
2416         if ((c = wintoclient(w)))
2417                 return c->mon;
2418         return selmon;
2419 }
2420
2421 /* There's no way to check accesses to destroyed windows, thus those cases are
2422  * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
2423  * default error handler, which may call exit. */
2424 int
2425 xerror(Display *dpy, XErrorEvent *ee)
2426 {
2427         if (ee->error_code == BadWindow
2428         || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
2429         || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
2430         || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
2431         || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
2432         || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
2433         || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
2434         || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
2435         || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
2436                 return 0;
2437         fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
2438                 ee->request_code, ee->error_code);
2439         return xerrorxlib(dpy, ee); /* may call exit */
2440 }
2441
2442 int
2443 xerrordummy(Display *dpy, XErrorEvent *ee)
2444 {
2445         return 0;
2446 }
2447
2448 /* Startup Error handler to check if another window manager
2449  * is already running. */
2450 int
2451 xerrorstart(Display *dpy, XErrorEvent *ee)
2452 {
2453         die("dwm: another window manager is already running");
2454         return -1;
2455 }
2456
2457 Monitor *
2458 systraytomon(Monitor *m) {
2459         Monitor *t;
2460         int i, n;
2461         if(!systraypinning) {
2462                 if(!m)
2463                         return selmon;
2464                 return m == selmon ? m : NULL;
2465         }
2466         for(n = 1, t = mons; t && t->next; n++, t = t->next) ;
2467         for(i = 1, t = mons; t && t->next && i < systraypinning; i++, t = t->next) ;
2468         if(systraypinningfailfirst && n < systraypinning)
2469                 return mons;
2470         return t;
2471 }
2472
2473 void
2474 zoom(const Arg *arg)
2475 {
2476         Client *c = selmon->sel;
2477
2478         if (!selmon->lt[selmon->sellt]->arrange
2479         || (selmon->sel && selmon->sel->isfloating))
2480                 return;
2481         if (c == nexttiled(selmon->clients))
2482                 if (!c || !(c = nexttiled(c->next)))
2483                         return;
2484         pop(c);
2485 }
2486
2487 int
2488 main(int argc, char *argv[])
2489 {
2490         if (argc == 2 && !strcmp("-v", argv[1]))
2491                 die("dwm-"VERSION);
2492         else if (argc != 1)
2493                 die("usage: dwm [-v]");
2494         if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
2495                 fputs("warning: no locale support\n", stderr);
2496         if (!(dpy = XOpenDisplay(NULL)))
2497                 die("dwm: cannot open display");
2498         checkotherwm();
2499         setup();
2500 #ifdef __OpenBSD__
2501         if (pledge("stdio rpath proc exec", NULL) == -1)
2502                 die("pledge");
2503 #endif /* __OpenBSD__ */
2504         scan();
2505         run();
2506         cleanup();
2507         XCloseDisplay(dpy);
2508         return EXIT_SUCCESS;
2509 }