Configuration of dwm for Mac Computers
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  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. * Calls to fetch an X event from the event queue are blocking. Due reading
  10. * status text from standard input, a select()-driven main loop has been
  11. * implemented which selects for reads on the X connection and STDIN_FILENO to
  12. * handle all data smoothly. The event handlers of dwm are organized in an
  13. * array which is accessed whenever a new event has been fetched. This allows
  14. * event dispatching in O(1) time.
  15. *
  16. * Each child of the root window is called a client, except windows which have
  17. * set the override_redirect flag. Clients are organized in a global
  18. * doubly-linked client list, the focus history is remembered through a global
  19. * stack list. Each client contains an array of Bools of the same size as the
  20. * global tags array to indicate the tags of a client.
  21. *
  22. * Keys and tagging rules are organized as arrays and defined in config.h.
  23. *
  24. * To understand everything else, start reading main().
  25. */
  26. #include <errno.h>
  27. #include <locale.h>
  28. #include <stdarg.h>
  29. #include <stdio.h>
  30. #include <stdlib.h>
  31. #include <string.h>
  32. #include <unistd.h>
  33. #include <sys/select.h>
  34. #include <sys/types.h>
  35. #include <sys/wait.h>
  36. #include <regex.h>
  37. #include <X11/cursorfont.h>
  38. #include <X11/keysym.h>
  39. #include <X11/Xatom.h>
  40. #include <X11/Xlib.h>
  41. #include <X11/Xproto.h>
  42. #include <X11/Xutil.h>
  43. //#ifdef XINERAMA
  44. #include <X11/extensions/Xinerama.h>
  45. //#endif
  46. /* macros */
  47. #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
  48. #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask))
  49. #define LENGTH(x) (sizeof x / sizeof x[0])
  50. #define MAXTAGLEN 16
  51. #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
  52. /* enums */
  53. enum { BarTop, BarBot, BarOff }; /* bar position */
  54. enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
  55. enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
  56. enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
  57. enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
  58. /* typedefs */
  59. typedef struct View View;
  60. typedef struct Client Client;
  61. struct Client {
  62. char name[256];
  63. int x, y, w, h;
  64. int basew, baseh, incw, inch, maxw, maxh, minw, minh;
  65. int minax, maxax, minay, maxay;
  66. long flags;
  67. unsigned int border, oldborder;
  68. Bool isbanned, isfixed, isfloating, isurgent;
  69. Bool *tags;
  70. Client *next;
  71. Client *prev;
  72. Client *snext;
  73. Window win;
  74. };
  75. typedef struct {
  76. int x, y, w, h;
  77. unsigned long norm[ColLast];
  78. unsigned long sel[ColLast];
  79. Drawable drawable;
  80. GC gc;
  81. struct {
  82. int ascent;
  83. int descent;
  84. int height;
  85. XFontSet set;
  86. XFontStruct *xfont;
  87. } font;
  88. } DC; /* draw context */
  89. typedef struct {
  90. unsigned long mod;
  91. KeySym keysym;
  92. void (*func)(const char *arg);
  93. const char *arg;
  94. } Key;
  95. typedef struct {
  96. const char *symbol;
  97. void (*arrange)(View *);
  98. } Layout;
  99. typedef struct {
  100. const char *prop;
  101. const char *tag;
  102. Bool isfloating;
  103. } Rule;
  104. struct View {
  105. unsigned int id;
  106. int x, y, w, h, wax, way, wah, waw;
  107. double mwfact;
  108. Layout *layout;
  109. Window barwin;
  110. };
  111. /* function declarations */
  112. void applyrules(Client *c);
  113. void arrange(void);
  114. void attach(Client *c);
  115. void attachstack(Client *c);
  116. void ban(Client *c);
  117. void buttonpress(XEvent *e);
  118. void checkotherwm(void);
  119. void cleanup(void);
  120. void configure(Client *c);
  121. void configurenotify(XEvent *e);
  122. void configurerequest(XEvent *e);
  123. Bool conflicts(Client *c, unsigned int tidx);
  124. void destroynotify(XEvent *e);
  125. void detach(Client *c);
  126. void detachstack(Client *c);
  127. void drawbar(View *v);
  128. void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
  129. void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
  130. void *emallocz(unsigned int size);
  131. void enternotify(XEvent *e);
  132. void eprint(const char *errstr, ...);
  133. void expose(XEvent *e);
  134. unsigned int firstag(View *v);
  135. void floating(View *v); /* default floating layout */
  136. void focus(Client *c);
  137. void focusin(XEvent *e);
  138. void focusnext(const char *arg);
  139. void focusprev(const char *arg);
  140. Client *getclient(Window w);
  141. unsigned long getcolor(const char *colstr);
  142. View *getview(Client *c);
  143. View *getviewbar(Window barwin);
  144. long getstate(Window w);
  145. Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
  146. void grabbuttons(Client *c, Bool focused);
  147. void grabkeys(void);
  148. unsigned int idxoftag(const char *t);
  149. void initfont(const char *fontstr);
  150. Bool isoccupied(unsigned int t);
  151. Bool isprotodel(Client *c);
  152. Bool isurgent(unsigned int t);
  153. Bool isvisible(Client *c);
  154. void keypress(XEvent *e);
  155. void killclient(const char *arg);
  156. void manage(Window w, XWindowAttributes *wa);
  157. void mappingnotify(XEvent *e);
  158. void maprequest(XEvent *e);
  159. View *viewat(void);
  160. void movemouse(Client *c);
  161. Client *nexttiled(Client *c, View *v);
  162. void propertynotify(XEvent *e);
  163. void quit(const char *arg);
  164. void reapply(const char *arg);
  165. void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
  166. void resizemouse(Client *c);
  167. void restack(View *v);
  168. void run(void);
  169. void scan(void);
  170. void setclientstate(Client *c, long state);
  171. void setlayout(const char *arg);
  172. void setmwfact(const char *arg);
  173. void setup(void);
  174. void spawn(const char *arg);
  175. void tag(const char *arg);
  176. unsigned int textnw(const char *text, unsigned int len);
  177. unsigned int textw(const char *text);
  178. void tile(View *v);
  179. void togglebar(const char *arg);
  180. void togglefloating(const char *arg);
  181. void toggletag(const char *arg);
  182. void toggleview(const char *arg);
  183. void unban(Client *c);
  184. void unmanage(Client *c);
  185. void unmapnotify(XEvent *e);
  186. void updatebarpos(View *v);
  187. void updatesizehints(Client *c);
  188. void updatetitle(Client *c);
  189. void updatewmhints(Client *c);
  190. void view(const char *arg);
  191. void viewprevtag(const char *arg); /* views previous selected tags */
  192. int xerror(Display *dpy, XErrorEvent *ee);
  193. int xerrordummy(Display *dpy, XErrorEvent *ee);
  194. int xerrorstart(Display *dpy, XErrorEvent *ee);
  195. void zoom(const char *arg);
  196. void selectview(const char *arg);
  197. /* variables */
  198. char stext[256], buf[256];
  199. int nviews = 1;
  200. int screen;
  201. int (*xerrorxlib)(Display *, XErrorEvent *);
  202. unsigned int bh, bpos;
  203. unsigned int blw = 0;
  204. unsigned int numlockmask = 0;
  205. void (*handler[LASTEvent]) (XEvent *) = {
  206. [ButtonPress] = buttonpress,
  207. [ConfigureRequest] = configurerequest,
  208. [ConfigureNotify] = configurenotify,
  209. [DestroyNotify] = destroynotify,
  210. [EnterNotify] = enternotify,
  211. [Expose] = expose,
  212. [FocusIn] = focusin,
  213. [KeyPress] = keypress,
  214. [MappingNotify] = mappingnotify,
  215. [MapRequest] = maprequest,
  216. [PropertyNotify] = propertynotify,
  217. [UnmapNotify] = unmapnotify
  218. };
  219. Atom wmatom[WMLast], netatom[NetLast];
  220. Bool domwfact = True;
  221. Bool dozoom = True;
  222. Bool otherwm, readin;
  223. Bool running = True;
  224. Bool *prevtags;
  225. Bool *seltags;
  226. Client *clients = NULL;
  227. Client *sel = NULL;
  228. Client *stack = NULL;
  229. Cursor cursor[CurLast];
  230. Display *dpy;
  231. DC dc = {0};
  232. View *views;
  233. View *selview;
  234. Window root;
  235. /* configuration, allows nested code to access above variables */
  236. #include "config.h"
  237. #define TAGSZ (LENGTH(tags) * sizeof(Bool))
  238. /* function implementations */
  239. void
  240. applyrules(Client *c) {
  241. unsigned int i, idx;
  242. Bool matched = False;
  243. Rule *r;
  244. XClassHint ch = { 0 };
  245. /* rule matching */
  246. XGetClassHint(dpy, c->win, &ch);
  247. for(i = 0; i < LENGTH(rules); i++) {
  248. r = &rules[i];
  249. if(strstr(c->name, r->prop)
  250. || (ch.res_class && strstr(ch.res_class, r->prop))
  251. || (ch.res_name && strstr(ch.res_name, r->prop)))
  252. {
  253. c->isfloating = r->isfloating;
  254. if(r->tag && !conflicts(c, (idx = idxoftag(r->tag)))) {
  255. c->tags[idx] = True;
  256. matched = True;
  257. }
  258. }
  259. }
  260. if(ch.res_class)
  261. XFree(ch.res_class);
  262. if(ch.res_name)
  263. XFree(ch.res_name);
  264. if(!matched) {
  265. for(i = 0; i < LENGTH(tags); i++)
  266. if(seltags[i] && vtags[i] == selview->id)
  267. c->tags[i] = True;
  268. }
  269. }
  270. void
  271. arrange(void) {
  272. unsigned int i;
  273. Client *c;
  274. for(c = clients; c; c = c->next)
  275. if(isvisible(c))
  276. unban(c);
  277. else
  278. ban(c);
  279. focus(NULL);
  280. for(i = 0; i < nviews; i++) {
  281. views[i].layout->arrange(&views[i]);
  282. restack(&views[i]);
  283. }
  284. }
  285. void
  286. attach(Client *c) {
  287. if(clients)
  288. clients->prev = c;
  289. c->next = clients;
  290. clients = c;
  291. }
  292. void
  293. attachstack(Client *c) {
  294. c->snext = stack;
  295. stack = c;
  296. }
  297. void
  298. ban(Client *c) {
  299. if(c->isbanned)
  300. return;
  301. XMoveWindow(dpy, c->win, c->x + 3 * getview(c)->w, c->y);
  302. c->isbanned = True;
  303. }
  304. void
  305. buttonpress(XEvent *e) {
  306. unsigned int i, x;
  307. Client *c;
  308. XButtonPressedEvent *ev = &e->xbutton;
  309. if(ev->window == selview->barwin) {
  310. x = 0;
  311. for(i = 0; i < LENGTH(tags); i++) {
  312. if(&views[vtags[i]] != selview)
  313. continue;
  314. x += textw(tags[i]);
  315. if(ev->x < x) {
  316. if(ev->button == Button1) {
  317. if(ev->state & MODKEY)
  318. tag(tags[i]);
  319. else
  320. view(tags[i]);
  321. }
  322. else if(ev->button == Button3) {
  323. if(ev->state & MODKEY)
  324. toggletag(tags[i]);
  325. else
  326. toggleview(tags[i]);
  327. }
  328. return;
  329. }
  330. }
  331. if((ev->x < x + blw) && ev->button == Button1)
  332. setlayout(NULL);
  333. }
  334. else if((c = getclient(ev->window))) {
  335. focus(c);
  336. if(CLEANMASK(ev->state) != MODKEY)
  337. return;
  338. if(ev->button == Button1) {
  339. restack(getview(c));
  340. movemouse(c);
  341. }
  342. else if(ev->button == Button2) {
  343. if((floating != getview(c)->layout->arrange) && c->isfloating)
  344. togglefloating(NULL);
  345. else
  346. zoom(NULL);
  347. }
  348. else if(ev->button == Button3 && !c->isfixed) {
  349. restack(getview(c));
  350. resizemouse(c);
  351. }
  352. }
  353. }
  354. void
  355. checkotherwm(void) {
  356. otherwm = False;
  357. XSetErrorHandler(xerrorstart);
  358. /* this causes an error if some other window manager is running */
  359. XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
  360. XSync(dpy, False);
  361. if(otherwm)
  362. eprint("dwm: another window manager is already running\n");
  363. XSync(dpy, False);
  364. XSetErrorHandler(NULL);
  365. xerrorxlib = XSetErrorHandler(xerror);
  366. XSync(dpy, False);
  367. }
  368. void
  369. cleanup(void) {
  370. unsigned int i;
  371. close(STDIN_FILENO);
  372. while(stack) {
  373. unban(stack);
  374. unmanage(stack);
  375. }
  376. if(dc.font.set)
  377. XFreeFontSet(dpy, dc.font.set);
  378. else
  379. XFreeFont(dpy, dc.font.xfont);
  380. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  381. XFreePixmap(dpy, dc.drawable);
  382. XFreeGC(dpy, dc.gc);
  383. XFreeCursor(dpy, cursor[CurNormal]);
  384. XFreeCursor(dpy, cursor[CurResize]);
  385. XFreeCursor(dpy, cursor[CurMove]);
  386. for(i = 0; i < nviews; i++)
  387. XDestroyWindow(dpy, views[i].barwin);
  388. XSync(dpy, False);
  389. XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
  390. }
  391. void
  392. configure(Client *c) {
  393. XConfigureEvent ce;
  394. ce.type = ConfigureNotify;
  395. ce.display = dpy;
  396. ce.event = c->win;
  397. ce.window = c->win;
  398. ce.x = c->x;
  399. ce.y = c->y;
  400. ce.width = c->w;
  401. ce.height = c->h;
  402. ce.border_width = c->border;
  403. ce.above = None;
  404. ce.override_redirect = False;
  405. XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
  406. }
  407. void
  408. configurenotify(XEvent *e) {
  409. XConfigureEvent *ev = &e->xconfigure;
  410. View *v = selview;
  411. if(ev->window == root && (ev->width != v->w || ev->height != v->h)) {
  412. /* TODO -- update Xinerama dimensions here */
  413. v->w = ev->width;
  414. v->h = ev->height;
  415. XFreePixmap(dpy, dc.drawable);
  416. dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(root, screen), bh, DefaultDepth(dpy, screen));
  417. XResizeWindow(dpy, v->barwin, v->w, bh);
  418. updatebarpos(selview);
  419. arrange();
  420. }
  421. }
  422. void
  423. configurerequest(XEvent *e) {
  424. Client *c;
  425. XConfigureRequestEvent *ev = &e->xconfigurerequest;
  426. XWindowChanges wc;
  427. if((c = getclient(ev->window))) {
  428. View *v = getview(c);
  429. if(ev->value_mask & CWBorderWidth)
  430. c->border = ev->border_width;
  431. if(c->isfixed || c->isfloating || (floating == v->layout->arrange)) {
  432. if(ev->value_mask & CWX)
  433. c->x = v->x + ev->x;
  434. if(ev->value_mask & CWY)
  435. c->y = v->y + ev->y;
  436. if(ev->value_mask & CWWidth)
  437. c->w = ev->width;
  438. if(ev->value_mask & CWHeight)
  439. c->h = ev->height;
  440. if((c->x - v->x + c->w) > v->w && c->isfloating)
  441. c->x = v->x + (v->w / 2 - c->w / 2); /* center in x direction */
  442. if((c->y - v->y + c->h) > v->h && c->isfloating)
  443. c->y = v->y + (v->h / 2 - c->h / 2); /* center in y direction */
  444. if((ev->value_mask & (CWX|CWY))
  445. && !(ev->value_mask & (CWWidth|CWHeight)))
  446. configure(c);
  447. if(isvisible(c))
  448. XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
  449. }
  450. else
  451. configure(c);
  452. }
  453. else {
  454. wc.x = ev->x;
  455. wc.y = ev->y;
  456. wc.width = ev->width;
  457. wc.height = ev->height;
  458. wc.border_width = ev->border_width;
  459. wc.sibling = ev->above;
  460. wc.stack_mode = ev->detail;
  461. XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
  462. }
  463. XSync(dpy, False);
  464. }
  465. Bool
  466. conflicts(Client *c, unsigned int tidx) {
  467. unsigned int i;
  468. for(i = 0; i < LENGTH(tags); i++)
  469. if(c->tags[i] && vtags[i] != vtags[tidx])
  470. return True; /* conflict */
  471. return False;
  472. }
  473. void
  474. destroynotify(XEvent *e) {
  475. Client *c;
  476. XDestroyWindowEvent *ev = &e->xdestroywindow;
  477. if((c = getclient(ev->window)))
  478. unmanage(c);
  479. }
  480. void
  481. detach(Client *c) {
  482. if(c->prev)
  483. c->prev->next = c->next;
  484. if(c->next)
  485. c->next->prev = c->prev;
  486. if(c == clients)
  487. clients = c->next;
  488. c->next = c->prev = NULL;
  489. }
  490. void
  491. detachstack(Client *c) {
  492. Client **tc;
  493. for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
  494. *tc = c->snext;
  495. }
  496. void
  497. drawbar(View *v) {
  498. int i, x;
  499. Client *c;
  500. dc.x = 0;
  501. for(c = stack; c && (!isvisible(c) || getview(c) != v); c = c->snext);
  502. for(i = 0; i < LENGTH(tags); i++) {
  503. if(&views[vtags[i]] != v)
  504. continue;
  505. dc.w = textw(tags[i]);
  506. if(seltags[i]) {
  507. drawtext(tags[i], dc.sel, isurgent(i));
  508. drawsquare(c && c->tags[i], isoccupied(i), isurgent(i), dc.sel);
  509. }
  510. else {
  511. drawtext(tags[i], dc.norm, isurgent(i));
  512. drawsquare(c && c->tags[i], isoccupied(i), isurgent(i), dc.norm);
  513. }
  514. dc.x += dc.w;
  515. }
  516. dc.w = blw;
  517. drawtext(v->layout->symbol, dc.norm, False);
  518. x = dc.x + dc.w;
  519. if(v == selview) {
  520. dc.w = textw(stext);
  521. dc.x = v->w - dc.w;
  522. if(dc.x < x) {
  523. dc.x = x;
  524. dc.w = v->w - x;
  525. }
  526. drawtext(stext, dc.norm, False);
  527. }
  528. else
  529. dc.x = v->w;
  530. if((dc.w = dc.x - x) > bh) {
  531. dc.x = x;
  532. if(c) {
  533. drawtext(c->name, dc.sel, False);
  534. drawsquare(False, c->isfloating, False, dc.sel);
  535. }
  536. else
  537. drawtext(NULL, dc.norm, False);
  538. }
  539. XCopyArea(dpy, dc.drawable, v->barwin, dc.gc, 0, 0, v->w, bh, 0, 0);
  540. XSync(dpy, False);
  541. }
  542. void
  543. drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
  544. int x;
  545. XGCValues gcv;
  546. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  547. gcv.foreground = col[invert ? ColBG : ColFG];
  548. XChangeGC(dpy, dc.gc, GCForeground, &gcv);
  549. x = (dc.font.ascent + dc.font.descent + 2) / 4;
  550. r.x = dc.x + 1;
  551. r.y = dc.y + 1;
  552. if(filled) {
  553. r.width = r.height = x + 1;
  554. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  555. }
  556. else if(empty) {
  557. r.width = r.height = x;
  558. XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  559. }
  560. }
  561. void
  562. drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
  563. int x, y, w, h;
  564. unsigned int len, olen;
  565. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  566. XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
  567. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  568. if(!text)
  569. return;
  570. w = 0;
  571. olen = len = strlen(text);
  572. if(len >= sizeof buf)
  573. len = sizeof buf - 1;
  574. memcpy(buf, text, len);
  575. buf[len] = 0;
  576. h = dc.font.ascent + dc.font.descent;
  577. y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  578. x = dc.x + (h / 2);
  579. /* shorten text if necessary */
  580. while(len && (w = textnw(buf, len)) > dc.w - h)
  581. buf[--len] = 0;
  582. if(len < olen) {
  583. if(len > 1)
  584. buf[len - 1] = '.';
  585. if(len > 2)
  586. buf[len - 2] = '.';
  587. if(len > 3)
  588. buf[len - 3] = '.';
  589. }
  590. if(w > dc.w)
  591. return; /* too long */
  592. XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
  593. if(dc.font.set)
  594. XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  595. else
  596. XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  597. }
  598. void *
  599. emallocz(unsigned int size) {
  600. void *res = calloc(1, size);
  601. if(!res)
  602. eprint("fatal: could not malloc() %u bytes\n", size);
  603. return res;
  604. }
  605. void
  606. enternotify(XEvent *e) {
  607. Client *c;
  608. XCrossingEvent *ev = &e->xcrossing;
  609. if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
  610. return;
  611. if((c = getclient(ev->window)))
  612. focus(c);
  613. else
  614. focus(NULL);
  615. }
  616. void
  617. eprint(const char *errstr, ...) {
  618. va_list ap;
  619. va_start(ap, errstr);
  620. vfprintf(stderr, errstr, ap);
  621. va_end(ap);
  622. exit(EXIT_FAILURE);
  623. }
  624. void
  625. expose(XEvent *e) {
  626. View *v;
  627. XExposeEvent *ev = &e->xexpose;
  628. if(ev->count == 0 && ((v = getviewbar(ev->window))))
  629. drawbar(v);
  630. }
  631. unsigned int
  632. firstag(View *v) {
  633. unsigned int i;
  634. for(i = 0; i < LENGTH(tags); i++)
  635. if(vtags[i] == v->id)
  636. return i;
  637. return 0; /* safe fallback */
  638. }
  639. void
  640. floating(View *v) { /* default floating layout */
  641. Client *c;
  642. domwfact = dozoom = False;
  643. for(c = clients; c; c = c->next)
  644. if(isvisible(c))
  645. resize(c, c->x, c->y, c->w, c->h, True);
  646. }
  647. void
  648. focus(Client *c) {
  649. View *v = selview;
  650. if(c)
  651. selview = getview(c);
  652. if(selview != v)
  653. drawbar(v);
  654. if(!c || (c && !isvisible(c)))
  655. /* TODO: isvisible might take getview(c) as constraint? */
  656. for(c = stack; c && (!isvisible(c) || getview(c) != selview); c = c->snext);
  657. if(sel && sel != c) {
  658. grabbuttons(sel, False);
  659. XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
  660. }
  661. if(c) {
  662. detachstack(c);
  663. attachstack(c);
  664. grabbuttons(c, True);
  665. }
  666. sel = c;
  667. if(c) {
  668. XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
  669. XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  670. selview = getview(c);
  671. }
  672. else
  673. XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
  674. drawbar(selview);
  675. }
  676. void
  677. focusin(XEvent *e) { /* there are some broken focus acquiring clients */
  678. XFocusChangeEvent *ev = &e->xfocus;
  679. if(sel && ev->window != sel->win)
  680. XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
  681. }
  682. void
  683. focusnext(const char *arg) {
  684. Client *c;
  685. if(!sel)
  686. return;
  687. for(c = sel->next; c && !isvisible(c); c = c->next);
  688. if(!c)
  689. for(c = clients; c && !isvisible(c); c = c->next);
  690. if(c) {
  691. focus(c);
  692. restack(getview(c));
  693. }
  694. }
  695. void
  696. focusprev(const char *arg) {
  697. Client *c;
  698. if(!sel)
  699. return;
  700. for(c = sel->prev; c && !isvisible(c); c = c->prev);
  701. if(!c) {
  702. for(c = clients; c && c->next; c = c->next);
  703. for(; c && !isvisible(c); c = c->prev);
  704. }
  705. if(c) {
  706. focus(c);
  707. restack(getview(c));
  708. }
  709. }
  710. Client *
  711. getclient(Window w) {
  712. Client *c;
  713. for(c = clients; c && c->win != w; c = c->next);
  714. return c;
  715. }
  716. unsigned long
  717. getcolor(const char *colstr) {
  718. Colormap cmap = DefaultColormap(dpy, screen);
  719. XColor color;
  720. if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
  721. eprint("error, cannot allocate color '%s'\n", colstr);
  722. return color.pixel;
  723. }
  724. View *
  725. getview(Client *c) {
  726. unsigned int i;
  727. for(i = 0; i < LENGTH(tags); i++)
  728. if(c->tags[i])
  729. return &views[vtags[i]];
  730. return NULL;
  731. }
  732. View *
  733. getviewbar(Window barwin) {
  734. unsigned int i;
  735. for(i = 0; i < nviews; i++)
  736. if(views[i].barwin == barwin)
  737. return &views[i];
  738. return NULL;
  739. }
  740. long
  741. getstate(Window w) {
  742. int format, status;
  743. long result = -1;
  744. unsigned char *p = NULL;
  745. unsigned long n, extra;
  746. Atom real;
  747. status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
  748. &real, &format, &n, &extra, (unsigned char **)&p);
  749. if(status != Success)
  750. return -1;
  751. if(n != 0)
  752. result = *p;
  753. XFree(p);
  754. return result;
  755. }
  756. Bool
  757. gettextprop(Window w, Atom atom, char *text, unsigned int size) {
  758. char **list = NULL;
  759. int n;
  760. XTextProperty name;
  761. if(!text || size == 0)
  762. return False;
  763. text[0] = '\0';
  764. XGetTextProperty(dpy, w, &name, atom);
  765. if(!name.nitems)
  766. return False;
  767. if(name.encoding == XA_STRING)
  768. strncpy(text, (char *)name.value, size - 1);
  769. else {
  770. if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
  771. && n > 0 && *list) {
  772. strncpy(text, *list, size - 1);
  773. XFreeStringList(list);
  774. }
  775. }
  776. text[size - 1] = '\0';
  777. XFree(name.value);
  778. return True;
  779. }
  780. void
  781. grabbuttons(Client *c, Bool focused) {
  782. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  783. if(focused) {
  784. XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
  785. GrabModeAsync, GrabModeSync, None, None);
  786. XGrabButton(dpy, Button1, MODKEY|LockMask, c->win, False, BUTTONMASK,
  787. GrabModeAsync, GrabModeSync, None, None);
  788. XGrabButton(dpy, Button1, MODKEY|numlockmask, c->win, False, BUTTONMASK,
  789. GrabModeAsync, GrabModeSync, None, None);
  790. XGrabButton(dpy, Button1, MODKEY|numlockmask|LockMask, c->win, False, BUTTONMASK,
  791. GrabModeAsync, GrabModeSync, None, None);
  792. XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
  793. GrabModeAsync, GrabModeSync, None, None);
  794. XGrabButton(dpy, Button2, MODKEY|LockMask, c->win, False, BUTTONMASK,
  795. GrabModeAsync, GrabModeSync, None, None);
  796. XGrabButton(dpy, Button2, MODKEY|numlockmask, c->win, False, BUTTONMASK,
  797. GrabModeAsync, GrabModeSync, None, None);
  798. XGrabButton(dpy, Button2, MODKEY|numlockmask|LockMask, c->win, False, BUTTONMASK,
  799. GrabModeAsync, GrabModeSync, None, None);
  800. XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
  801. GrabModeAsync, GrabModeSync, None, None);
  802. XGrabButton(dpy, Button3, MODKEY|LockMask, c->win, False, BUTTONMASK,
  803. GrabModeAsync, GrabModeSync, None, None);
  804. XGrabButton(dpy, Button3, MODKEY|numlockmask, c->win, False, BUTTONMASK,
  805. GrabModeAsync, GrabModeSync, None, None);
  806. XGrabButton(dpy, Button3, MODKEY|numlockmask|LockMask, c->win, False, BUTTONMASK,
  807. GrabModeAsync, GrabModeSync, None, None);
  808. }
  809. else
  810. XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
  811. GrabModeAsync, GrabModeSync, None, None);
  812. }
  813. void
  814. grabkeys(void) {
  815. unsigned int i, j;
  816. KeyCode code;
  817. XModifierKeymap *modmap;
  818. /* init modifier map */
  819. modmap = XGetModifierMapping(dpy);
  820. for(i = 0; i < 8; i++)
  821. for(j = 0; j < modmap->max_keypermod; j++) {
  822. if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
  823. numlockmask = (1 << i);
  824. }
  825. XFreeModifiermap(modmap);
  826. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  827. for(i = 0; i < LENGTH(keys); i++) {
  828. code = XKeysymToKeycode(dpy, keys[i].keysym);
  829. XGrabKey(dpy, code, keys[i].mod, root, True,
  830. GrabModeAsync, GrabModeAsync);
  831. XGrabKey(dpy, code, keys[i].mod|LockMask, root, True,
  832. GrabModeAsync, GrabModeAsync);
  833. XGrabKey(dpy, code, keys[i].mod|numlockmask, root, True,
  834. GrabModeAsync, GrabModeAsync);
  835. XGrabKey(dpy, code, keys[i].mod|numlockmask|LockMask, root, True,
  836. GrabModeAsync, GrabModeAsync);
  837. }
  838. }
  839. unsigned int
  840. idxoftag(const char *t) {
  841. unsigned int i;
  842. for(i = 0; (i < LENGTH(tags)) && (tags[i] != t); i++);
  843. return (i < LENGTH(tags)) ? i : firstag(selview);
  844. }
  845. void
  846. initfont(const char *fontstr) {
  847. char *def, **missing;
  848. int i, n;
  849. missing = NULL;
  850. if(dc.font.set)
  851. XFreeFontSet(dpy, dc.font.set);
  852. dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
  853. if(missing) {
  854. while(n--)
  855. fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
  856. XFreeStringList(missing);
  857. }
  858. if(dc.font.set) {
  859. XFontSetExtents *font_extents;
  860. XFontStruct **xfonts;
  861. char **font_names;
  862. dc.font.ascent = dc.font.descent = 0;
  863. font_extents = XExtentsOfFontSet(dc.font.set);
  864. n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
  865. for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
  866. if(dc.font.ascent < (*xfonts)->ascent)
  867. dc.font.ascent = (*xfonts)->ascent;
  868. if(dc.font.descent < (*xfonts)->descent)
  869. dc.font.descent = (*xfonts)->descent;
  870. xfonts++;
  871. }
  872. }
  873. else {
  874. if(dc.font.xfont)
  875. XFreeFont(dpy, dc.font.xfont);
  876. dc.font.xfont = NULL;
  877. if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
  878. && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
  879. eprint("error, cannot load font: '%s'\n", fontstr);
  880. dc.font.ascent = dc.font.xfont->ascent;
  881. dc.font.descent = dc.font.xfont->descent;
  882. }
  883. dc.font.height = dc.font.ascent + dc.font.descent;
  884. }
  885. Bool
  886. isoccupied(unsigned int t) {
  887. Client *c;
  888. for(c = clients; c; c = c->next)
  889. if(c->tags[t])
  890. return True;
  891. return False;
  892. }
  893. Bool
  894. isprotodel(Client *c) {
  895. int i, n;
  896. Atom *protocols;
  897. Bool ret = False;
  898. if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
  899. for(i = 0; !ret && i < n; i++)
  900. if(protocols[i] == wmatom[WMDelete])
  901. ret = True;
  902. XFree(protocols);
  903. }
  904. return ret;
  905. }
  906. Bool
  907. isurgent(unsigned int t) {
  908. Client *c;
  909. for(c = clients; c; c = c->next)
  910. if(c->isurgent && c->tags[t])
  911. return True;
  912. return False;
  913. }
  914. Bool
  915. isvisible(Client *c) {
  916. unsigned int i;
  917. for(i = 0; i < LENGTH(tags); i++)
  918. if(c->tags[i] && seltags[i])
  919. return True;
  920. return False;
  921. }
  922. void
  923. keypress(XEvent *e) {
  924. unsigned int i;
  925. KeySym keysym;
  926. XKeyEvent *ev;
  927. ev = &e->xkey;
  928. keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
  929. for(i = 0; i < LENGTH(keys); i++)
  930. if(keysym == keys[i].keysym
  931. && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state))
  932. {
  933. if(keys[i].func)
  934. keys[i].func(keys[i].arg);
  935. }
  936. }
  937. void
  938. killclient(const char *arg) {
  939. XEvent ev;
  940. if(!sel)
  941. return;
  942. if(isprotodel(sel)) {
  943. ev.type = ClientMessage;
  944. ev.xclient.window = sel->win;
  945. ev.xclient.message_type = wmatom[WMProtocols];
  946. ev.xclient.format = 32;
  947. ev.xclient.data.l[0] = wmatom[WMDelete];
  948. ev.xclient.data.l[1] = CurrentTime;
  949. XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
  950. }
  951. else
  952. XKillClient(dpy, sel->win);
  953. }
  954. void
  955. manage(Window w, XWindowAttributes *wa) {
  956. Client *c, *t = NULL;
  957. View *v;
  958. Status rettrans;
  959. Window trans;
  960. XWindowChanges wc;
  961. c = emallocz(sizeof(Client));
  962. c->tags = emallocz(TAGSZ);
  963. c->win = w;
  964. applyrules(c);
  965. v = getview(c);
  966. c->x = wa->x + v->x;
  967. c->y = wa->y + v->y;
  968. c->w = wa->width;
  969. c->h = wa->height;
  970. c->oldborder = wa->border_width;
  971. if(c->w == v->w && c->h == v->h) {
  972. c->x = v->x;
  973. c->y = v->y;
  974. c->border = wa->border_width;
  975. }
  976. else {
  977. if(c->x + c->w + 2 * c->border > v->wax + v->waw)
  978. c->x = v->wax + v->waw - c->w - 2 * c->border;
  979. if(c->y + c->h + 2 * c->border > v->way + v->wah)
  980. c->y = v->way + v->wah - c->h - 2 * c->border;
  981. if(c->x < v->wax)
  982. c->x = v->wax;
  983. if(c->y < v->way)
  984. c->y = v->way;
  985. c->border = BORDERPX;
  986. }
  987. wc.border_width = c->border;
  988. XConfigureWindow(dpy, w, CWBorderWidth, &wc);
  989. XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
  990. configure(c); /* propagates border_width, if size doesn't change */
  991. updatesizehints(c);
  992. XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
  993. grabbuttons(c, False);
  994. updatetitle(c);
  995. if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
  996. for(t = clients; t && t->win != trans; t = t->next);
  997. if(t)
  998. memcpy(c->tags, t->tags, TAGSZ);
  999. if(!c->isfloating)
  1000. c->isfloating = (rettrans == Success) || c->isfixed;
  1001. attach(c);
  1002. attachstack(c);
  1003. XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
  1004. ban(c);
  1005. XMapWindow(dpy, c->win);
  1006. setclientstate(c, NormalState);
  1007. arrange();
  1008. }
  1009. void
  1010. mappingnotify(XEvent *e) {
  1011. XMappingEvent *ev = &e->xmapping;
  1012. XRefreshKeyboardMapping(ev);
  1013. if(ev->request == MappingKeyboard)
  1014. grabkeys();
  1015. }
  1016. void
  1017. maprequest(XEvent *e) {
  1018. static XWindowAttributes wa;
  1019. XMapRequestEvent *ev = &e->xmaprequest;
  1020. if(!XGetWindowAttributes(dpy, ev->window, &wa))
  1021. return;
  1022. if(wa.override_redirect)
  1023. return;
  1024. if(!getclient(ev->window))
  1025. manage(ev->window, &wa);
  1026. }
  1027. void
  1028. movemouse(Client *c) {
  1029. int x1, y1, ocx, ocy, di, nx, ny;
  1030. unsigned int dui;
  1031. View *v;
  1032. Window dummy;
  1033. XEvent ev;
  1034. ocx = nx = c->x;
  1035. ocy = ny = c->y;
  1036. v = getview(c);
  1037. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  1038. None, cursor[CurMove], CurrentTime) != GrabSuccess)
  1039. return;
  1040. XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  1041. for(;;) {
  1042. XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
  1043. switch (ev.type) {
  1044. case ButtonRelease:
  1045. XUngrabPointer(dpy, CurrentTime);
  1046. return;
  1047. case ConfigureRequest:
  1048. case Expose:
  1049. case MapRequest:
  1050. handler[ev.type](&ev);
  1051. break;
  1052. case MotionNotify:
  1053. XSync(dpy, False);
  1054. nx = ocx + (ev.xmotion.x - x1);
  1055. ny = ocy + (ev.xmotion.y - y1);
  1056. if(abs(v->wax - nx) < SNAP)
  1057. nx = v->wax;
  1058. else if(abs((v->wax + v->waw) - (nx + c->w + 2 * c->border)) < SNAP)
  1059. nx = v->wax + v->waw - c->w - 2 * c->border;
  1060. if(abs(v->way - ny) < SNAP)
  1061. ny = v->way;
  1062. else if(abs((v->way + v->wah) - (ny + c->h + 2 * c->border)) < SNAP)
  1063. ny = v->way + v->wah - c->h - 2 * c->border;
  1064. if(!c->isfloating && (v->layout->arrange != floating) && (abs(nx - c->x) > SNAP || abs(ny - c->y) > SNAP))
  1065. togglefloating(NULL);
  1066. if((v->layout->arrange == floating) || c->isfloating)
  1067. resize(c, nx, ny, c->w, c->h, False);
  1068. break;
  1069. }
  1070. }
  1071. }
  1072. Client *
  1073. nexttiled(Client *c, View *v) {
  1074. for(; c && (c->isfloating || getview(c) != v || !isvisible(c)); c = c->next);
  1075. return c;
  1076. }
  1077. void
  1078. propertynotify(XEvent *e) {
  1079. Client *c;
  1080. Window trans;
  1081. XPropertyEvent *ev = &e->xproperty;
  1082. if(ev->state == PropertyDelete)
  1083. return; /* ignore */
  1084. if((c = getclient(ev->window))) {
  1085. switch (ev->atom) {
  1086. default: break;
  1087. case XA_WM_TRANSIENT_FOR:
  1088. XGetTransientForHint(dpy, c->win, &trans);
  1089. if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
  1090. arrange();
  1091. break;
  1092. case XA_WM_NORMAL_HINTS:
  1093. updatesizehints(c);
  1094. break;
  1095. case XA_WM_HINTS:
  1096. updatewmhints(c);
  1097. drawbar(getview(c));
  1098. break;
  1099. }
  1100. if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
  1101. updatetitle(c);
  1102. if(c == sel)
  1103. drawbar(selview);
  1104. }
  1105. }
  1106. }
  1107. void
  1108. quit(const char *arg) {
  1109. readin = running = False;
  1110. }
  1111. void
  1112. reapply(const char *arg) {
  1113. static Bool zerotags[LENGTH(tags)] = { 0 };
  1114. Client *c;
  1115. for(c = clients; c; c = c->next) {
  1116. memcpy(c->tags, zerotags, sizeof zerotags);
  1117. applyrules(c);
  1118. }
  1119. arrange();
  1120. }
  1121. void
  1122. resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
  1123. View *v;
  1124. XWindowChanges wc;
  1125. v = getview(c);
  1126. if(sizehints) {
  1127. /* set minimum possible */
  1128. if (w < 1)
  1129. w = 1;
  1130. if (h < 1)
  1131. h = 1;
  1132. /* temporarily remove base dimensions */
  1133. w -= c->basew;
  1134. h -= c->baseh;
  1135. /* adjust for aspect limits */
  1136. if (c->minay > 0 && c->maxay > 0 && c->minax > 0 && c->maxax > 0) {
  1137. if (w * c->maxay > h * c->maxax)
  1138. w = h * c->maxax / c->maxay;
  1139. else if (w * c->minay < h * c->minax)
  1140. h = w * c->minay / c->minax;
  1141. }
  1142. /* adjust for increment value */
  1143. if(c->incw)
  1144. w -= w % c->incw;
  1145. if(c->inch)
  1146. h -= h % c->inch;
  1147. /* restore base dimensions */
  1148. w += c->basew;
  1149. h += c->baseh;
  1150. if(c->minw > 0 && w < c->minw)
  1151. w = c->minw;
  1152. if(c->minh > 0 && h < c->minh)
  1153. h = c->minh;
  1154. if(c->maxw > 0 && w > c->maxw)
  1155. w = c->maxw;
  1156. if(c->maxh > 0 && h > c->maxh)
  1157. h = c->maxh;
  1158. }
  1159. if(w <= 0 || h <= 0)
  1160. return;
  1161. if(x > v->x + v->w)
  1162. x = v->w - w - 2 * c->border;
  1163. if(y > v->y + v->h)
  1164. y = v->h - h - 2 * c->border;
  1165. if(x + w + 2 * c->border < v->x)
  1166. x = v->x;
  1167. if(y + h + 2 * c->border < v->y)
  1168. y = v->y;
  1169. if(c->x != x || c->y != y || c->w != w || c->h != h) {
  1170. c->x = wc.x = x;
  1171. c->y = wc.y = y;
  1172. c->w = wc.width = w;
  1173. c->h = wc.height = h;
  1174. wc.border_width = c->border;
  1175. XConfigureWindow(dpy, c->win,
  1176. CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
  1177. configure(c);
  1178. XSync(dpy, False);
  1179. }
  1180. }
  1181. void
  1182. resizemouse(Client *c) {
  1183. int ocx, ocy;
  1184. int nw, nh;
  1185. View *v;
  1186. XEvent ev;
  1187. ocx = c->x;
  1188. ocy = c->y;
  1189. v = getview(c);
  1190. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  1191. None, cursor[CurResize], CurrentTime) != GrabSuccess)
  1192. return;
  1193. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
  1194. for(;;) {
  1195. XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask , &ev);
  1196. switch(ev.type) {
  1197. case ButtonRelease:
  1198. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
  1199. c->w + c->border - 1, c->h + c->border - 1);
  1200. XUngrabPointer(dpy, CurrentTime);
  1201. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1202. return;
  1203. case ConfigureRequest:
  1204. case Expose:
  1205. case MapRequest:
  1206. handler[ev.type](&ev);
  1207. break;
  1208. case MotionNotify:
  1209. XSync(dpy, False);
  1210. if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
  1211. nw = 1;
  1212. if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
  1213. nh = 1;
  1214. if(!c->isfloating && (v->layout->arrange != floating) && (abs(nw - c->w) > SNAP || abs(nh - c->h) > SNAP))
  1215. togglefloating(NULL);
  1216. if((v->layout->arrange == floating) || c->isfloating)
  1217. resize(c, c->x, c->y, nw, nh, True);
  1218. break;
  1219. }
  1220. }
  1221. }
  1222. void
  1223. restack(View *v) {
  1224. Client *c;
  1225. XEvent ev;
  1226. XWindowChanges wc;
  1227. drawbar(v);
  1228. if(!sel)
  1229. return;
  1230. if(sel->isfloating || (v->layout->arrange == floating))
  1231. XRaiseWindow(dpy, sel->win);
  1232. if(v->layout->arrange != floating) {
  1233. wc.stack_mode = Below;
  1234. wc.sibling = v->barwin;
  1235. if(!sel->isfloating) {
  1236. XConfigureWindow(dpy, sel->win, CWSibling|CWStackMode, &wc);
  1237. wc.sibling = sel->win;
  1238. }
  1239. for(c = nexttiled(clients, v); c; c = nexttiled(c->next, v)) {
  1240. if(c == sel)
  1241. continue;
  1242. XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
  1243. wc.sibling = c->win;
  1244. }
  1245. }
  1246. XSync(dpy, False);
  1247. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1248. }
  1249. void
  1250. run(void) {
  1251. char *p;
  1252. char sbuf[sizeof stext];
  1253. fd_set rd;
  1254. int r, xfd;
  1255. unsigned int len, offset;
  1256. XEvent ev;
  1257. /* main event loop, also reads status text from stdin */
  1258. XSync(dpy, False);
  1259. xfd = ConnectionNumber(dpy);
  1260. readin = True;
  1261. offset = 0;
  1262. len = sizeof stext - 1;
  1263. sbuf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
  1264. while(running) {
  1265. FD_ZERO(&rd);
  1266. if(readin)
  1267. FD_SET(STDIN_FILENO, &rd);
  1268. FD_SET(xfd, &rd);
  1269. if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
  1270. if(errno == EINTR)
  1271. continue;
  1272. eprint("select failed\n");
  1273. }
  1274. if(FD_ISSET(STDIN_FILENO, &rd)) {
  1275. switch((r = read(STDIN_FILENO, sbuf + offset, len - offset))) {
  1276. case -1:
  1277. strncpy(stext, strerror(errno), len);
  1278. readin = False;
  1279. break;
  1280. case 0:
  1281. strncpy(stext, "EOF", 4);
  1282. readin = False;
  1283. break;
  1284. default:
  1285. for(p = sbuf + offset; r > 0; p++, r--, offset++)
  1286. if(*p == '\n' || *p == '\0') {
  1287. *p = '\0';
  1288. strncpy(stext, sbuf, len);
  1289. p += r - 1; /* p is sbuf + offset + r - 1 */
  1290. for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
  1291. offset = r;
  1292. if(r)
  1293. memmove(sbuf, p - r + 1, r);
  1294. break;
  1295. }
  1296. break;
  1297. }
  1298. drawbar(selview);
  1299. }
  1300. while(XPending(dpy)) {
  1301. XNextEvent(dpy, &ev);
  1302. if(handler[ev.type])
  1303. (handler[ev.type])(&ev); /* call handler */
  1304. }
  1305. }
  1306. }
  1307. void
  1308. scan(void) {
  1309. unsigned int i, num;
  1310. Window *wins, d1, d2;
  1311. XWindowAttributes wa;
  1312. wins = NULL;
  1313. if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
  1314. for(i = 0; i < num; i++) {
  1315. if(!XGetWindowAttributes(dpy, wins[i], &wa)
  1316. || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
  1317. continue;
  1318. if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
  1319. manage(wins[i], &wa);
  1320. }
  1321. for(i = 0; i < num; i++) { /* now the transients */
  1322. if(!XGetWindowAttributes(dpy, wins[i], &wa))
  1323. continue;
  1324. if(XGetTransientForHint(dpy, wins[i], &d1)
  1325. && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
  1326. manage(wins[i], &wa);
  1327. }
  1328. }
  1329. if(wins)
  1330. XFree(wins);
  1331. }
  1332. void
  1333. setclientstate(Client *c, long state) {
  1334. long data[] = {state, None};
  1335. XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
  1336. PropModeReplace, (unsigned char *)data, 2);
  1337. }
  1338. void
  1339. setlayout(const char *arg) {
  1340. unsigned int i;
  1341. View *v = selview;
  1342. if(!arg) {
  1343. v->layout++;
  1344. if(v->layout == &layouts[LENGTH(layouts)])
  1345. v->layout = &layouts[0];
  1346. }
  1347. else {
  1348. for(i = 0; i < LENGTH(layouts); i++)
  1349. if(!strcmp(arg, layouts[i].symbol))
  1350. break;
  1351. if(i == LENGTH(layouts))
  1352. return;
  1353. v->layout = &layouts[i];
  1354. }
  1355. if(sel)
  1356. arrange();
  1357. else
  1358. drawbar(selview);
  1359. }
  1360. void
  1361. setmwfact(const char *arg) {
  1362. double delta;
  1363. View *v = selview;
  1364. if(!domwfact)
  1365. return;
  1366. /* arg handling, manipulate mwfact */
  1367. if(arg == NULL)
  1368. v->mwfact = MWFACT;
  1369. else if(sscanf(arg, "%lf", &delta) == 1) {
  1370. if(arg[0] == '+' || arg[0] == '-')
  1371. v->mwfact += delta;
  1372. else
  1373. v->mwfact = delta;
  1374. if(v->mwfact < 0.1)
  1375. v->mwfact = 0.1;
  1376. else if(v->mwfact > 0.9)
  1377. v->mwfact = 0.9;
  1378. }
  1379. arrange();
  1380. }
  1381. void
  1382. setup(void) {
  1383. unsigned int i, j;
  1384. View *v;
  1385. XSetWindowAttributes wa;
  1386. XineramaScreenInfo *info = NULL;
  1387. /* init atoms */
  1388. wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
  1389. wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
  1390. wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
  1391. wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
  1392. netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
  1393. netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
  1394. /* init cursors */
  1395. wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
  1396. cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
  1397. cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
  1398. if(XineramaIsActive(dpy))
  1399. info = XineramaQueryScreens(dpy, &nviews);
  1400. #if defined(AIM_XINERAMA)
  1401. nviews = 2; /* aim Xinerama */
  1402. #endif
  1403. views = emallocz(nviews * sizeof(View));
  1404. screen = DefaultScreen(dpy);
  1405. root = RootWindow(dpy, screen);
  1406. /* init appearance */
  1407. dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
  1408. dc.norm[ColBG] = getcolor(NORMBGCOLOR);
  1409. dc.norm[ColFG] = getcolor(NORMFGCOLOR);
  1410. dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
  1411. dc.sel[ColBG] = getcolor(SELBGCOLOR);
  1412. dc.sel[ColFG] = getcolor(SELFGCOLOR);
  1413. initfont(FONT);
  1414. dc.h = bh = dc.font.height + 2;
  1415. dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
  1416. dc.gc = XCreateGC(dpy, root, 0, 0);
  1417. XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
  1418. if(!dc.font.set)
  1419. XSetFont(dpy, dc.gc, dc.font.xfont->fid);
  1420. for(blw = i = 0; i < LENGTH(layouts); i++) {
  1421. i = textw(layouts[i].symbol);
  1422. if(i > blw)
  1423. blw = i;
  1424. }
  1425. seltags = emallocz(TAGSZ);
  1426. prevtags = emallocz(TAGSZ);
  1427. /* check, if vtags need assistance, because there is only 1 view */
  1428. if(nviews == 1)
  1429. for(i = 0; i < LENGTH(tags); i++)
  1430. vtags[i] = 0;
  1431. for(i = 0; i < nviews; i++) {
  1432. /* init geometry */
  1433. v = &views[i];
  1434. v->id = i;
  1435. /* select first tag of view */
  1436. j = firstag(v);
  1437. seltags[j] = prevtags[j] = True;
  1438. if(info) {
  1439. #if defined(AIM_XINERAMA)
  1440. v->w = DisplayWidth(dpy, screen) / 2;
  1441. v->x = (i == 0) ? 0 : v->w;
  1442. v->y = 0;
  1443. v->h = DisplayHeight(dpy, screen);
  1444. #else
  1445. v->x = info[i].x_org;
  1446. v->y = info[i].y_org;
  1447. v->w = info[i].width;
  1448. v->h = info[i].height;
  1449. #endif
  1450. }
  1451. else {
  1452. v->x = 0;
  1453. v->y = 0;
  1454. v->w = DisplayWidth(dpy, screen);
  1455. v->h = DisplayHeight(dpy, screen);
  1456. }
  1457. /* init layouts */
  1458. v->mwfact = MWFACT;
  1459. v->layout = &layouts[0];
  1460. // TODO: bpos per screen?
  1461. bpos = BARPOS;
  1462. wa.override_redirect = 1;
  1463. wa.background_pixmap = ParentRelative;
  1464. wa.event_mask = ButtonPressMask|ExposureMask;
  1465. /* init bars */
  1466. v->barwin = XCreateWindow(dpy, root, v->x, v->y, v->w, bh, 0,
  1467. DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
  1468. CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
  1469. XDefineCursor(dpy, v->barwin, cursor[CurNormal]);
  1470. updatebarpos(v);
  1471. XMapRaised(dpy, v->barwin);
  1472. strcpy(stext, "dwm-"VERSION);
  1473. /* EWMH support per view */
  1474. XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
  1475. PropModeReplace, (unsigned char *) netatom, NetLast);
  1476. /* select for events */
  1477. wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
  1478. |EnterWindowMask|LeaveWindowMask|StructureNotifyMask;
  1479. XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
  1480. XSelectInput(dpy, root, wa.event_mask);
  1481. drawbar(v);
  1482. }
  1483. if(info)
  1484. XFree(info);
  1485. selview = viewat();
  1486. /* grab keys */
  1487. grabkeys();
  1488. }
  1489. void
  1490. spawn(const char *arg) {
  1491. static char *shell = NULL;
  1492. if(!shell && !(shell = getenv("SHELL")))
  1493. shell = "/bin/sh";
  1494. if(!arg)
  1495. return;
  1496. /* The double-fork construct avoids zombie processes and keeps the code
  1497. * clean from stupid signal handlers. */
  1498. if(fork() == 0) {
  1499. if(fork() == 0) {
  1500. if(dpy)
  1501. close(ConnectionNumber(dpy));
  1502. setsid();
  1503. execl(shell, shell, "-c", arg, (char *)NULL);
  1504. fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg);
  1505. perror(" failed");
  1506. }
  1507. exit(0);
  1508. }
  1509. wait(0);
  1510. }
  1511. void
  1512. tag(const char *arg) {
  1513. unsigned int i;
  1514. if(!sel)
  1515. return;
  1516. for(i = 0; i < LENGTH(tags); i++)
  1517. sel->tags[i] = (NULL == arg) && (vtags[i] == getview(sel)->id);
  1518. i = idxoftag(arg);
  1519. if(!conflicts(sel, i))
  1520. sel->tags[idxoftag(arg)] = True;
  1521. arrange();
  1522. }
  1523. unsigned int
  1524. textnw(const char *text, unsigned int len) {
  1525. XRectangle r;
  1526. if(dc.font.set) {
  1527. XmbTextExtents(dc.font.set, text, len, NULL, &r);
  1528. return r.width;
  1529. }
  1530. return XTextWidth(dc.font.xfont, text, len);
  1531. }
  1532. unsigned int
  1533. textw(const char *text) {
  1534. return textnw(text, strlen(text)) + dc.font.height;
  1535. }
  1536. void
  1537. tile(View *v) {
  1538. unsigned int i, n, nx, ny, nw, nh, mw, th;
  1539. Client *c, *mc;
  1540. domwfact = dozoom = True;
  1541. nx = v->wax;
  1542. ny = v->way;
  1543. nw = 0;
  1544. for(n = 0, c = nexttiled(clients, v); c; c = nexttiled(c->next, v))
  1545. n++;
  1546. /* window geoms */
  1547. mw = (n == 1) ? v->waw : v->mwfact * v->waw;
  1548. th = (n > 1) ? v->wah / (n - 1) : 0;
  1549. if(n > 1 && th < bh)
  1550. th = v->wah;
  1551. for(i = 0, c = mc = nexttiled(clients, v); c; c = nexttiled(c->next, v)) {
  1552. if(i == 0) { /* master */
  1553. nw = mw - 2 * c->border;
  1554. nh = v->wah - 2 * c->border;
  1555. }
  1556. else { /* tile window */
  1557. if(i == 1) {
  1558. ny = v->way;
  1559. nx += mc->w + 2 * mc->border;
  1560. nw = v->waw - mw - 2 * c->border;
  1561. }
  1562. if(i + 1 == n) /* remainder */
  1563. nh = (v->way + v->wah) - ny - 2 * c->border;
  1564. else
  1565. nh = th - 2 * c->border;
  1566. }
  1567. resize(c, nx, ny, nw, nh, RESIZEHINTS);
  1568. if((RESIZEHINTS) && ((c->h < bh) || (c->h > nh) || (c->w < bh) || (c->w > nw)))
  1569. /* client doesn't accept size constraints */
  1570. resize(c, nx, ny, nw, nh, False);
  1571. if(n > 1 && th != v->wah)
  1572. ny = c->y + c->h + 2 * c->border;
  1573. i++;
  1574. }
  1575. }
  1576. void
  1577. togglebar(const char *arg) {
  1578. if(bpos == BarOff)
  1579. bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
  1580. else
  1581. bpos = BarOff;
  1582. updatebarpos(selview);
  1583. arrange();
  1584. }
  1585. void
  1586. togglefloating(const char *arg) {
  1587. if(!sel)
  1588. return;
  1589. sel->isfloating = !sel->isfloating;
  1590. if(sel->isfloating)
  1591. resize(sel, sel->x, sel->y, sel->w, sel->h, True);
  1592. arrange();
  1593. }
  1594. void
  1595. toggletag(const char *arg) {
  1596. unsigned int i, j;
  1597. if(!sel)
  1598. return;
  1599. i = idxoftag(arg);
  1600. if(conflicts(sel, i))
  1601. return;
  1602. sel->tags[i] = !sel->tags[i];
  1603. for(j = 0; j < LENGTH(tags) && !sel->tags[j]; j++);
  1604. if(j == LENGTH(tags))
  1605. sel->tags[i] = True; /* at least one tag must be enabled */
  1606. arrange();
  1607. }
  1608. void
  1609. toggleview(const char *arg) {
  1610. unsigned int i, j;
  1611. i = idxoftag(arg);
  1612. seltags[i] = !seltags[i];
  1613. for(j = 0; j < LENGTH(tags) && !seltags[j]; j++);
  1614. if(j == LENGTH(tags))
  1615. seltags[i] = True; /* at least one tag must be viewed */
  1616. arrange();
  1617. }
  1618. void
  1619. unban(Client *c) {
  1620. if(!c->isbanned)
  1621. return;
  1622. XMoveWindow(dpy, c->win, c->x, c->y);
  1623. c->isbanned = False;
  1624. }
  1625. void
  1626. unmanage(Client *c) {
  1627. XWindowChanges wc;
  1628. wc.border_width = c->oldborder;
  1629. /* The server grab construct avoids race conditions. */
  1630. XGrabServer(dpy);
  1631. XSetErrorHandler(xerrordummy);
  1632. XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
  1633. detach(c);
  1634. detachstack(c);
  1635. if(sel == c)
  1636. focus(NULL);
  1637. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  1638. setclientstate(c, WithdrawnState);
  1639. free(c->tags);
  1640. free(c);
  1641. XSync(dpy, False);
  1642. XSetErrorHandler(xerror);
  1643. XUngrabServer(dpy);
  1644. arrange();
  1645. }
  1646. void
  1647. unmapnotify(XEvent *e) {
  1648. Client *c;
  1649. XUnmapEvent *ev = &e->xunmap;
  1650. if((c = getclient(ev->window)))
  1651. unmanage(c);
  1652. }
  1653. void
  1654. updatebarpos(View *v) {
  1655. XEvent ev;
  1656. v->wax = v->x;
  1657. v->way = v->y;
  1658. v->wah = v->h;
  1659. v->waw = v->w;
  1660. switch(bpos) {
  1661. default:
  1662. v->wah -= bh;
  1663. v->way += bh;
  1664. XMoveWindow(dpy, v->barwin, v->x, v->y);
  1665. break;
  1666. case BarBot:
  1667. v->wah -= bh;
  1668. XMoveWindow(dpy, v->barwin, v->x, v->y + v->wah);
  1669. break;
  1670. case BarOff:
  1671. XMoveWindow(dpy, v->barwin, v->x, v->y - bh);
  1672. break;
  1673. }
  1674. XSync(dpy, False);
  1675. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1676. }
  1677. void
  1678. updatesizehints(Client *c) {
  1679. long msize;
  1680. XSizeHints size;
  1681. if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
  1682. size.flags = PSize;
  1683. c->flags = size.flags;
  1684. if(c->flags & PBaseSize) {
  1685. c->basew = size.base_width;
  1686. c->baseh = size.base_height;
  1687. }
  1688. else if(c->flags & PMinSize) {
  1689. c->basew = size.min_width;
  1690. c->baseh = size.min_height;
  1691. }
  1692. else
  1693. c->basew = c->baseh = 0;
  1694. if(c->flags & PResizeInc) {
  1695. c->incw = size.width_inc;
  1696. c->inch = size.height_inc;
  1697. }
  1698. else
  1699. c->incw = c->inch = 0;
  1700. if(c->flags & PMaxSize) {
  1701. c->maxw = size.max_width;
  1702. c->maxh = size.max_height;
  1703. }
  1704. else
  1705. c->maxw = c->maxh = 0;
  1706. if(c->flags & PMinSize) {
  1707. c->minw = size.min_width;
  1708. c->minh = size.min_height;
  1709. }
  1710. else if(c->flags & PBaseSize) {
  1711. c->minw = size.base_width;
  1712. c->minh = size.base_height;
  1713. }
  1714. else
  1715. c->minw = c->minh = 0;
  1716. if(c->flags & PAspect) {
  1717. c->minax = size.min_aspect.x;
  1718. c->maxax = size.max_aspect.x;
  1719. c->minay = size.min_aspect.y;
  1720. c->maxay = size.max_aspect.y;
  1721. }
  1722. else
  1723. c->minax = c->maxax = c->minay = c->maxay = 0;
  1724. c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
  1725. && c->maxw == c->minw && c->maxh == c->minh);
  1726. }
  1727. void
  1728. updatetitle(Client *c) {
  1729. if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
  1730. gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
  1731. }
  1732. void
  1733. updatewmhints(Client *c) {
  1734. XWMHints *wmh;
  1735. if((wmh = XGetWMHints(dpy, c->win))) {
  1736. c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
  1737. XFree(wmh);
  1738. }
  1739. }
  1740. void
  1741. view(const char *arg) {
  1742. unsigned int i, j;
  1743. Bool tmp[LENGTH(tags)];
  1744. memcpy(tmp, seltags, TAGSZ);
  1745. if(arg == NULL) {
  1746. for(i = 0; i < LENGTH(tags); i++)
  1747. tmp[i] = (vtags[i] == selview->id);
  1748. }
  1749. else {
  1750. i = idxoftag(arg);
  1751. for(j = 0; j < LENGTH(tags); j++)
  1752. if(selview->id == vtags[i]) {
  1753. /* view tag of selview */
  1754. if(selview->id == vtags[j])
  1755. tmp[j] = False;
  1756. }
  1757. else {
  1758. /* only touch the view the focus should go */
  1759. if(vtags[j] == vtags[i])
  1760. tmp[j] = False;
  1761. }
  1762. selview = &views[vtags[i]];
  1763. tmp[i] = True;
  1764. }
  1765. if(memcmp(seltags, tmp, TAGSZ) != 0) {
  1766. memcpy(prevtags, seltags, TAGSZ);
  1767. memcpy(seltags, tmp, TAGSZ);
  1768. arrange();
  1769. }
  1770. }
  1771. View *
  1772. viewat() {
  1773. int i, x, y;
  1774. Window win;
  1775. unsigned int mask;
  1776. XQueryPointer(dpy, root, &win, &win, &x, &y, &i, &i, &mask);
  1777. for(i = 0; i < nviews; i++) {
  1778. if((x >= views[i].x && x < views[i].x + views[i].w)
  1779. && (y >= views[i].y && y < views[i].y + views[i].h))
  1780. return &views[i];
  1781. }
  1782. return NULL;
  1783. }
  1784. void
  1785. viewprevtag(const char *arg) {
  1786. static Bool tmp[LENGTH(tags)];
  1787. memcpy(tmp, seltags, TAGSZ);
  1788. memcpy(seltags, prevtags, TAGSZ);
  1789. memcpy(prevtags, tmp, TAGSZ);
  1790. arrange();
  1791. }
  1792. /* There's no way to check accesses to destroyed windows, thus those cases are
  1793. * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
  1794. * default error handler, which may call exit. */
  1795. int
  1796. xerror(Display *dpy, XErrorEvent *ee) {
  1797. if(ee->error_code == BadWindow
  1798. || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
  1799. || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
  1800. || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
  1801. || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
  1802. || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
  1803. || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
  1804. || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
  1805. return 0;
  1806. fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
  1807. ee->request_code, ee->error_code);
  1808. return xerrorxlib(dpy, ee); /* may call exit */
  1809. }
  1810. int
  1811. xerrordummy(Display *dpy, XErrorEvent *ee) {
  1812. return 0;
  1813. }
  1814. /* Startup Error handler to check if another window manager
  1815. * is already running. */
  1816. int
  1817. xerrorstart(Display *dpy, XErrorEvent *ee) {
  1818. otherwm = True;
  1819. return -1;
  1820. }
  1821. void
  1822. zoom(const char *arg) {
  1823. Client *c = sel;
  1824. if(!sel || !dozoom || sel->isfloating)
  1825. return;
  1826. if(c == nexttiled(clients, getview(c)))
  1827. if(!(c = nexttiled(c->next, getview(c))))
  1828. return;
  1829. detach(c);
  1830. attach(c);
  1831. focus(c);
  1832. arrange();
  1833. }
  1834. int
  1835. main(int argc, char *argv[]) {
  1836. if(argc == 2 && !strcmp("-v", argv[1]))
  1837. eprint("dwm-"VERSION", © 2006-2008 dwm engineers, see LICENSE for details\n");
  1838. else if(argc != 1)
  1839. eprint("usage: dwm [-v]\n");
  1840. setlocale(LC_CTYPE, "");
  1841. if(!(dpy = XOpenDisplay(0)))
  1842. eprint("dwm: cannot open display\n");
  1843. checkotherwm();
  1844. setup();
  1845. scan();
  1846. run();
  1847. cleanup();
  1848. XCloseDisplay(dpy);
  1849. return 0;
  1850. }