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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 <X11/cursorfont.h>
  37. #include <X11/keysym.h>
  38. #include <X11/Xatom.h>
  39. #include <X11/Xlib.h>
  40. #include <X11/Xproto.h>
  41. #include <X11/Xutil.h>
  42. /* macros */
  43. #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
  44. #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask))
  45. #define LENGTH(x) (sizeof x / sizeof x[0])
  46. #define MAXTAGLEN 16
  47. #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
  48. /* enums */
  49. enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
  50. enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
  51. enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
  52. enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
  53. /* typedefs */
  54. typedef struct Client Client;
  55. struct Client {
  56. char name[256];
  57. int x, y, w, h;
  58. int basew, baseh, incw, inch, maxw, maxh, minw, minh;
  59. int minax, maxax, minay, maxay;
  60. long flags;
  61. unsigned int border, oldborder;
  62. Bool isbanned, isfixed, isfloating, isurgent;
  63. Bool *tags;
  64. Client *next;
  65. Client *prev;
  66. Client *snext;
  67. Window win;
  68. };
  69. typedef struct {
  70. int x, y, w, h;
  71. unsigned long norm[ColLast];
  72. unsigned long sel[ColLast];
  73. Drawable drawable;
  74. GC gc;
  75. struct {
  76. int ascent;
  77. int descent;
  78. int height;
  79. XFontSet set;
  80. XFontStruct *xfont;
  81. } font;
  82. } DC; /* draw context */
  83. typedef struct {
  84. unsigned long mod;
  85. KeySym keysym;
  86. void (*func)(const char *arg);
  87. const char *arg;
  88. } Key;
  89. typedef struct {
  90. const char *symbol;
  91. void (*arrange)(void);
  92. Bool isfloating;
  93. } Layout;
  94. typedef struct {
  95. const char *prop;
  96. const char *tag;
  97. Bool isfloating;
  98. } Rule;
  99. /* function declarations */
  100. void applyrules(Client *c);
  101. void arrange(void);
  102. void attach(Client *c);
  103. void attachstack(Client *c);
  104. void ban(Client *c);
  105. void buttonpress(XEvent *e);
  106. void checkotherwm(void);
  107. void cleanup(void);
  108. void configure(Client *c);
  109. void configurenotify(XEvent *e);
  110. void configurerequest(XEvent *e);
  111. void destroynotify(XEvent *e);
  112. void detach(Client *c);
  113. void detachstack(Client *c);
  114. void drawbar(void);
  115. void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
  116. void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
  117. void *emallocz(unsigned int size);
  118. void enternotify(XEvent *e);
  119. void eprint(const char *errstr, ...);
  120. void expose(XEvent *e);
  121. void floating(void); /* default floating layout */
  122. void focus(Client *c);
  123. void focusin(XEvent *e);
  124. void focusnext(const char *arg);
  125. void focusprev(const char *arg);
  126. Client *getclient(Window w);
  127. unsigned long getcolor(const char *colstr);
  128. long getstate(Window w);
  129. Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
  130. void grabbuttons(Client *c, Bool focused);
  131. void grabkeys(void);
  132. unsigned int idxoftag(const char *t);
  133. void initfont(const char *fontstr);
  134. Bool isoccupied(unsigned int t);
  135. Bool isprotodel(Client *c);
  136. Bool isurgent(unsigned int t);
  137. Bool isvisible(Client *c);
  138. void keypress(XEvent *e);
  139. void killclient(const char *arg);
  140. void manage(Window w, XWindowAttributes *wa);
  141. void mappingnotify(XEvent *e);
  142. void maprequest(XEvent *e);
  143. void monocle(void);
  144. void movemouse(Client *c);
  145. Client *nexttiled(Client *c);
  146. void propertynotify(XEvent *e);
  147. void quit(const char *arg);
  148. void reapply(const char *arg);
  149. void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
  150. void resizemouse(Client *c);
  151. void restack(void);
  152. void run(void);
  153. void scan(void);
  154. void setclientstate(Client *c, long state);
  155. void setdefaultgeoms(void);
  156. void setlayout(const char *arg);
  157. void setup(void);
  158. void spawn(const char *arg);
  159. void tag(const char *arg);
  160. unsigned int textnw(const char *text, unsigned int len);
  161. unsigned int textw(const char *text);
  162. void tileh(void);
  163. void tilehstack(unsigned int n);
  164. unsigned int tilemaster(void);
  165. void tilev(void);
  166. void tilevstack(unsigned int n);
  167. void togglefloating(const char *arg);
  168. void toggletag(const char *arg);
  169. void toggleview(const char *arg);
  170. void unban(Client *c);
  171. void unmanage(Client *c);
  172. void unmapnotify(XEvent *e);
  173. void updatesizehints(Client *c);
  174. void updatetitle(Client *c);
  175. void updatewmhints(Client *c);
  176. void view(const char *arg);
  177. void viewprevtag(const char *arg); /* views previous selected tags */
  178. int xerror(Display *dpy, XErrorEvent *ee);
  179. int xerrordummy(Display *dpy, XErrorEvent *ee);
  180. int xerrorstart(Display *dpy, XErrorEvent *ee);
  181. void zoom(const char *arg);
  182. /* variables */
  183. char stext[256], buf[256];
  184. int screen, sx, sy, sw, sh;
  185. int (*xerrorxlib)(Display *, XErrorEvent *);
  186. int bx, by, bw, bh, blw, mx, my, mw, mh, mox, moy, mow, moh, tx, ty, tw, th, wx, wy, ww, wh;
  187. unsigned int numlockmask = 0;
  188. void (*handler[LASTEvent]) (XEvent *) = {
  189. [ButtonPress] = buttonpress,
  190. [ConfigureRequest] = configurerequest,
  191. [ConfigureNotify] = configurenotify,
  192. [DestroyNotify] = destroynotify,
  193. [EnterNotify] = enternotify,
  194. [Expose] = expose,
  195. [FocusIn] = focusin,
  196. [KeyPress] = keypress,
  197. [MappingNotify] = mappingnotify,
  198. [MapRequest] = maprequest,
  199. [PropertyNotify] = propertynotify,
  200. [UnmapNotify] = unmapnotify
  201. };
  202. Atom wmatom[WMLast], netatom[NetLast];
  203. Bool otherwm, readin;
  204. Bool running = True;
  205. Bool *prevtags;
  206. Bool *seltags;
  207. Client *clients = NULL;
  208. Client *sel = NULL;
  209. Client *stack = NULL;
  210. Cursor cursor[CurLast];
  211. Display *dpy;
  212. DC dc = {0};
  213. Layout *lt = NULL;
  214. Window root, barwin;
  215. void (*setgeoms)(void) = setdefaultgeoms;
  216. /* configuration, allows nested code to access above variables */
  217. #include "config.h"
  218. #define TAGSZ (LENGTH(tags) * sizeof(Bool))
  219. static Bool tmp[LENGTH(tags)];
  220. /* function implementations */
  221. void
  222. applyrules(Client *c) {
  223. unsigned int i;
  224. Bool matched = False;
  225. Rule *r;
  226. XClassHint ch = { 0 };
  227. /* rule matching */
  228. XGetClassHint(dpy, c->win, &ch);
  229. for(i = 0; i < LENGTH(rules); i++) {
  230. r = &rules[i];
  231. if(strstr(c->name, r->prop)
  232. || (ch.res_class && strstr(ch.res_class, r->prop))
  233. || (ch.res_name && strstr(ch.res_name, r->prop)))
  234. {
  235. c->isfloating = r->isfloating;
  236. if(r->tag) {
  237. c->tags[idxoftag(r->tag)] = True;
  238. matched = True;
  239. }
  240. }
  241. }
  242. if(ch.res_class)
  243. XFree(ch.res_class);
  244. if(ch.res_name)
  245. XFree(ch.res_name);
  246. if(!matched)
  247. memcpy(c->tags, seltags, TAGSZ);
  248. }
  249. void
  250. arrange(void) {
  251. Client *c;
  252. for(c = clients; c; c = c->next)
  253. if(isvisible(c))
  254. unban(c);
  255. else
  256. ban(c);
  257. focus(NULL);
  258. lt->arrange();
  259. restack();
  260. }
  261. void
  262. attach(Client *c) {
  263. if(clients)
  264. clients->prev = c;
  265. c->next = clients;
  266. clients = c;
  267. }
  268. void
  269. attachstack(Client *c) {
  270. c->snext = stack;
  271. stack = c;
  272. }
  273. void
  274. ban(Client *c) {
  275. if(c->isbanned)
  276. return;
  277. XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  278. c->isbanned = True;
  279. }
  280. void
  281. buttonpress(XEvent *e) {
  282. unsigned int i, x;
  283. Client *c;
  284. XButtonPressedEvent *ev = &e->xbutton;
  285. if(ev->window == barwin) {
  286. x = 0;
  287. for(i = 0; i < LENGTH(tags); i++) {
  288. x += textw(tags[i]);
  289. if(ev->x < x) {
  290. if(ev->button == Button1) {
  291. if(ev->state & MODKEY)
  292. tag(tags[i]);
  293. else
  294. view(tags[i]);
  295. }
  296. else if(ev->button == Button3) {
  297. if(ev->state & MODKEY)
  298. toggletag(tags[i]);
  299. else
  300. toggleview(tags[i]);
  301. }
  302. return;
  303. }
  304. }
  305. }
  306. else if((c = getclient(ev->window))) {
  307. focus(c);
  308. if(CLEANMASK(ev->state) != MODKEY)
  309. return;
  310. if(ev->button == Button1) {
  311. restack();
  312. movemouse(c);
  313. }
  314. else if(ev->button == Button2) {
  315. if((floating != lt->arrange) && c->isfloating)
  316. togglefloating(NULL);
  317. else
  318. zoom(NULL);
  319. }
  320. else if(ev->button == Button3 && !c->isfixed) {
  321. restack();
  322. resizemouse(c);
  323. }
  324. }
  325. }
  326. void
  327. checkotherwm(void) {
  328. otherwm = False;
  329. XSetErrorHandler(xerrorstart);
  330. /* this causes an error if some other window manager is running */
  331. XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
  332. XSync(dpy, False);
  333. if(otherwm)
  334. eprint("dwm: another window manager is already running\n");
  335. XSync(dpy, False);
  336. XSetErrorHandler(NULL);
  337. xerrorxlib = XSetErrorHandler(xerror);
  338. XSync(dpy, False);
  339. }
  340. void
  341. cleanup(void) {
  342. close(STDIN_FILENO);
  343. while(stack) {
  344. unban(stack);
  345. unmanage(stack);
  346. }
  347. if(dc.font.set)
  348. XFreeFontSet(dpy, dc.font.set);
  349. else
  350. XFreeFont(dpy, dc.font.xfont);
  351. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  352. XFreePixmap(dpy, dc.drawable);
  353. XFreeGC(dpy, dc.gc);
  354. XFreeCursor(dpy, cursor[CurNormal]);
  355. XFreeCursor(dpy, cursor[CurResize]);
  356. XFreeCursor(dpy, cursor[CurMove]);
  357. XDestroyWindow(dpy, barwin);
  358. XSync(dpy, False);
  359. XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
  360. }
  361. void
  362. configure(Client *c) {
  363. XConfigureEvent ce;
  364. ce.type = ConfigureNotify;
  365. ce.display = dpy;
  366. ce.event = c->win;
  367. ce.window = c->win;
  368. ce.x = c->x;
  369. ce.y = c->y;
  370. ce.width = c->w;
  371. ce.height = c->h;
  372. ce.border_width = c->border;
  373. ce.above = None;
  374. ce.override_redirect = False;
  375. XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
  376. }
  377. void
  378. configurenotify(XEvent *e) {
  379. XConfigureEvent *ev = &e->xconfigure;
  380. if(ev->window == root && (ev->width != sw || ev->height != sh)) {
  381. setgeoms();
  382. arrange();
  383. }
  384. }
  385. void
  386. configurerequest(XEvent *e) {
  387. Client *c;
  388. XConfigureRequestEvent *ev = &e->xconfigurerequest;
  389. XWindowChanges wc;
  390. if((c = getclient(ev->window))) {
  391. if(ev->value_mask & CWBorderWidth)
  392. c->border = ev->border_width;
  393. if(c->isfixed || c->isfloating || lt->isfloating) {
  394. if(ev->value_mask & CWX)
  395. c->x = sx + ev->x;
  396. if(ev->value_mask & CWY)
  397. c->y = sy + ev->y;
  398. if(ev->value_mask & CWWidth)
  399. c->w = ev->width;
  400. if(ev->value_mask & CWHeight)
  401. c->h = ev->height;
  402. if((c->x - sx + c->w) > sw && c->isfloating)
  403. c->x = sx + (sw / 2 - c->w / 2); /* center in x direction */
  404. if((c->y - sy + c->h) > sh && c->isfloating)
  405. c->y = sy + (sh / 2 - c->h / 2); /* center in y direction */
  406. if((ev->value_mask & (CWX|CWY))
  407. && !(ev->value_mask & (CWWidth|CWHeight)))
  408. configure(c);
  409. if(isvisible(c))
  410. XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
  411. }
  412. else
  413. configure(c);
  414. }
  415. else {
  416. wc.x = ev->x;
  417. wc.y = ev->y;
  418. wc.width = ev->width;
  419. wc.height = ev->height;
  420. wc.border_width = ev->border_width;
  421. wc.sibling = ev->above;
  422. wc.stack_mode = ev->detail;
  423. XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
  424. }
  425. XSync(dpy, False);
  426. }
  427. void
  428. destroynotify(XEvent *e) {
  429. Client *c;
  430. XDestroyWindowEvent *ev = &e->xdestroywindow;
  431. if((c = getclient(ev->window)))
  432. unmanage(c);
  433. }
  434. void
  435. detach(Client *c) {
  436. if(c->prev)
  437. c->prev->next = c->next;
  438. if(c->next)
  439. c->next->prev = c->prev;
  440. if(c == clients)
  441. clients = c->next;
  442. c->next = c->prev = NULL;
  443. }
  444. void
  445. detachstack(Client *c) {
  446. Client **tc;
  447. for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
  448. *tc = c->snext;
  449. }
  450. void
  451. drawbar(void) {
  452. int i, x;
  453. Client *c;
  454. dc.x = 0;
  455. for(c = stack; c && !isvisible(c); c = c->snext);
  456. for(i = 0; i < LENGTH(tags); i++) {
  457. dc.w = textw(tags[i]);
  458. if(seltags[i]) {
  459. drawtext(tags[i], dc.sel, isurgent(i));
  460. drawsquare(c && c->tags[i], isoccupied(i), isurgent(i), dc.sel);
  461. }
  462. else {
  463. drawtext(tags[i], dc.norm, isurgent(i));
  464. drawsquare(c && c->tags[i], isoccupied(i), isurgent(i), dc.norm);
  465. }
  466. dc.x += dc.w;
  467. }
  468. dc.w = blw;
  469. drawtext(lt->symbol, dc.norm, False);
  470. x = dc.x + dc.w;
  471. dc.w = textw(stext);
  472. dc.x = bw - dc.w;
  473. if(dc.x < x) {
  474. dc.x = x;
  475. dc.w = bw - x;
  476. }
  477. drawtext(stext, dc.norm, False);
  478. if((dc.w = dc.x - x) > bh) {
  479. dc.x = x;
  480. if(c) {
  481. drawtext(c->name, dc.sel, False);
  482. drawsquare(False, c->isfloating, False, dc.sel);
  483. }
  484. else
  485. drawtext(NULL, dc.norm, False);
  486. }
  487. XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
  488. XSync(dpy, False);
  489. }
  490. void
  491. drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
  492. int x;
  493. XGCValues gcv;
  494. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  495. gcv.foreground = col[invert ? ColBG : ColFG];
  496. XChangeGC(dpy, dc.gc, GCForeground, &gcv);
  497. x = (dc.font.ascent + dc.font.descent + 2) / 4;
  498. r.x = dc.x + 1;
  499. r.y = dc.y + 1;
  500. if(filled) {
  501. r.width = r.height = x + 1;
  502. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  503. }
  504. else if(empty) {
  505. r.width = r.height = x;
  506. XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  507. }
  508. }
  509. void
  510. drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
  511. int x, y, w, h;
  512. unsigned int len, olen;
  513. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  514. XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
  515. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  516. if(!text)
  517. return;
  518. w = 0;
  519. olen = len = strlen(text);
  520. if(len >= sizeof buf)
  521. len = sizeof buf - 1;
  522. memcpy(buf, text, len);
  523. buf[len] = 0;
  524. h = dc.font.ascent + dc.font.descent;
  525. y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  526. x = dc.x + (h / 2);
  527. /* shorten text if necessary */
  528. while(len && (w = textnw(buf, len)) > dc.w - h)
  529. buf[--len] = 0;
  530. if(len < olen) {
  531. if(len > 1)
  532. buf[len - 1] = '.';
  533. if(len > 2)
  534. buf[len - 2] = '.';
  535. if(len > 3)
  536. buf[len - 3] = '.';
  537. }
  538. if(w > dc.w)
  539. return; /* too long */
  540. XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
  541. if(dc.font.set)
  542. XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  543. else
  544. XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  545. }
  546. void *
  547. emallocz(unsigned int size) {
  548. void *res = calloc(1, size);
  549. if(!res)
  550. eprint("fatal: could not malloc() %u bytes\n", size);
  551. return res;
  552. }
  553. void
  554. enternotify(XEvent *e) {
  555. Client *c;
  556. XCrossingEvent *ev = &e->xcrossing;
  557. if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
  558. return;
  559. if((c = getclient(ev->window)))
  560. focus(c);
  561. else
  562. focus(NULL);
  563. }
  564. void
  565. eprint(const char *errstr, ...) {
  566. va_list ap;
  567. va_start(ap, errstr);
  568. vfprintf(stderr, errstr, ap);
  569. va_end(ap);
  570. exit(EXIT_FAILURE);
  571. }
  572. void
  573. expose(XEvent *e) {
  574. XExposeEvent *ev = &e->xexpose;
  575. if(ev->count == 0 && (ev->window == barwin))
  576. drawbar();
  577. }
  578. void
  579. floating(void) { /* default floating layout */
  580. Client *c;
  581. for(c = clients; c; c = c->next)
  582. if(isvisible(c))
  583. resize(c, c->x, c->y, c->w, c->h, True);
  584. }
  585. void
  586. focus(Client *c) {
  587. if(!c || (c && !isvisible(c)))
  588. for(c = stack; c && !isvisible(c); c = c->snext);
  589. if(sel && sel != c) {
  590. grabbuttons(sel, False);
  591. XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
  592. }
  593. if(c) {
  594. detachstack(c);
  595. attachstack(c);
  596. grabbuttons(c, True);
  597. }
  598. sel = c;
  599. if(c) {
  600. XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
  601. XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  602. }
  603. else
  604. XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
  605. drawbar();
  606. }
  607. void
  608. focusin(XEvent *e) { /* there are some broken focus acquiring clients */
  609. XFocusChangeEvent *ev = &e->xfocus;
  610. if(sel && ev->window != sel->win)
  611. XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
  612. }
  613. void
  614. focusnext(const char *arg) {
  615. Client *c;
  616. if(!sel)
  617. return;
  618. for(c = sel->next; c && !isvisible(c); c = c->next);
  619. if(!c)
  620. for(c = clients; c && !isvisible(c); c = c->next);
  621. if(c) {
  622. focus(c);
  623. restack();
  624. }
  625. }
  626. void
  627. focusprev(const char *arg) {
  628. Client *c;
  629. if(!sel)
  630. return;
  631. for(c = sel->prev; c && !isvisible(c); c = c->prev);
  632. if(!c) {
  633. for(c = clients; c && c->next; c = c->next);
  634. for(; c && !isvisible(c); c = c->prev);
  635. }
  636. if(c) {
  637. focus(c);
  638. restack();
  639. }
  640. }
  641. Client *
  642. getclient(Window w) {
  643. Client *c;
  644. for(c = clients; c && c->win != w; c = c->next);
  645. return c;
  646. }
  647. unsigned long
  648. getcolor(const char *colstr) {
  649. Colormap cmap = DefaultColormap(dpy, screen);
  650. XColor color;
  651. if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
  652. eprint("error, cannot allocate color '%s'\n", colstr);
  653. return color.pixel;
  654. }
  655. long
  656. getstate(Window w) {
  657. int format, status;
  658. long result = -1;
  659. unsigned char *p = NULL;
  660. unsigned long n, extra;
  661. Atom real;
  662. status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
  663. &real, &format, &n, &extra, (unsigned char **)&p);
  664. if(status != Success)
  665. return -1;
  666. if(n != 0)
  667. result = *p;
  668. XFree(p);
  669. return result;
  670. }
  671. Bool
  672. gettextprop(Window w, Atom atom, char *text, unsigned int size) {
  673. char **list = NULL;
  674. int n;
  675. XTextProperty name;
  676. if(!text || size == 0)
  677. return False;
  678. text[0] = '\0';
  679. XGetTextProperty(dpy, w, &name, atom);
  680. if(!name.nitems)
  681. return False;
  682. if(name.encoding == XA_STRING)
  683. strncpy(text, (char *)name.value, size - 1);
  684. else {
  685. if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
  686. && n > 0 && *list) {
  687. strncpy(text, *list, size - 1);
  688. XFreeStringList(list);
  689. }
  690. }
  691. text[size - 1] = '\0';
  692. XFree(name.value);
  693. return True;
  694. }
  695. void
  696. grabbuttons(Client *c, Bool focused) {
  697. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  698. if(focused) {
  699. XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
  700. GrabModeAsync, GrabModeSync, None, None);
  701. XGrabButton(dpy, Button1, MODKEY|LockMask, c->win, False, BUTTONMASK,
  702. GrabModeAsync, GrabModeSync, None, None);
  703. XGrabButton(dpy, Button1, MODKEY|numlockmask, c->win, False, BUTTONMASK,
  704. GrabModeAsync, GrabModeSync, None, None);
  705. XGrabButton(dpy, Button1, MODKEY|numlockmask|LockMask, c->win, False, BUTTONMASK,
  706. GrabModeAsync, GrabModeSync, None, None);
  707. XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
  708. GrabModeAsync, GrabModeSync, None, None);
  709. XGrabButton(dpy, Button2, MODKEY|LockMask, c->win, False, BUTTONMASK,
  710. GrabModeAsync, GrabModeSync, None, None);
  711. XGrabButton(dpy, Button2, MODKEY|numlockmask, c->win, False, BUTTONMASK,
  712. GrabModeAsync, GrabModeSync, None, None);
  713. XGrabButton(dpy, Button2, MODKEY|numlockmask|LockMask, c->win, False, BUTTONMASK,
  714. GrabModeAsync, GrabModeSync, None, None);
  715. XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
  716. GrabModeAsync, GrabModeSync, None, None);
  717. XGrabButton(dpy, Button3, MODKEY|LockMask, c->win, False, BUTTONMASK,
  718. GrabModeAsync, GrabModeSync, None, None);
  719. XGrabButton(dpy, Button3, MODKEY|numlockmask, c->win, False, BUTTONMASK,
  720. GrabModeAsync, GrabModeSync, None, None);
  721. XGrabButton(dpy, Button3, MODKEY|numlockmask|LockMask, c->win, False, BUTTONMASK,
  722. GrabModeAsync, GrabModeSync, None, None);
  723. }
  724. else
  725. XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
  726. GrabModeAsync, GrabModeSync, None, None);
  727. }
  728. void
  729. grabkeys(void) {
  730. unsigned int i, j;
  731. KeyCode code;
  732. XModifierKeymap *modmap;
  733. /* init modifier map */
  734. modmap = XGetModifierMapping(dpy);
  735. for(i = 0; i < 8; i++)
  736. for(j = 0; j < modmap->max_keypermod; j++) {
  737. if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
  738. numlockmask = (1 << i);
  739. }
  740. XFreeModifiermap(modmap);
  741. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  742. for(i = 0; i < LENGTH(keys); i++) {
  743. code = XKeysymToKeycode(dpy, keys[i].keysym);
  744. XGrabKey(dpy, code, keys[i].mod, root, True,
  745. GrabModeAsync, GrabModeAsync);
  746. XGrabKey(dpy, code, keys[i].mod|LockMask, root, True,
  747. GrabModeAsync, GrabModeAsync);
  748. XGrabKey(dpy, code, keys[i].mod|numlockmask, root, True,
  749. GrabModeAsync, GrabModeAsync);
  750. XGrabKey(dpy, code, keys[i].mod|numlockmask|LockMask, root, True,
  751. GrabModeAsync, GrabModeAsync);
  752. }
  753. }
  754. unsigned int
  755. idxoftag(const char *t) {
  756. unsigned int i;
  757. for(i = 0; (i < LENGTH(tags)) && (tags[i] != t); i++);
  758. return (i < LENGTH(tags)) ? i : 0;
  759. }
  760. void
  761. initfont(const char *fontstr) {
  762. char *def, **missing;
  763. int i, n;
  764. missing = NULL;
  765. if(dc.font.set)
  766. XFreeFontSet(dpy, dc.font.set);
  767. dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
  768. if(missing) {
  769. while(n--)
  770. fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
  771. XFreeStringList(missing);
  772. }
  773. if(dc.font.set) {
  774. XFontSetExtents *font_extents;
  775. XFontStruct **xfonts;
  776. char **font_names;
  777. dc.font.ascent = dc.font.descent = 0;
  778. font_extents = XExtentsOfFontSet(dc.font.set);
  779. n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
  780. for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
  781. if(dc.font.ascent < (*xfonts)->ascent)
  782. dc.font.ascent = (*xfonts)->ascent;
  783. if(dc.font.descent < (*xfonts)->descent)
  784. dc.font.descent = (*xfonts)->descent;
  785. xfonts++;
  786. }
  787. }
  788. else {
  789. if(dc.font.xfont)
  790. XFreeFont(dpy, dc.font.xfont);
  791. dc.font.xfont = NULL;
  792. if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
  793. && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
  794. eprint("error, cannot load font: '%s'\n", fontstr);
  795. dc.font.ascent = dc.font.xfont->ascent;
  796. dc.font.descent = dc.font.xfont->descent;
  797. }
  798. dc.font.height = dc.font.ascent + dc.font.descent;
  799. }
  800. Bool
  801. isoccupied(unsigned int t) {
  802. Client *c;
  803. for(c = clients; c; c = c->next)
  804. if(c->tags[t])
  805. return True;
  806. return False;
  807. }
  808. Bool
  809. isprotodel(Client *c) {
  810. int i, n;
  811. Atom *protocols;
  812. Bool ret = False;
  813. if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
  814. for(i = 0; !ret && i < n; i++)
  815. if(protocols[i] == wmatom[WMDelete])
  816. ret = True;
  817. XFree(protocols);
  818. }
  819. return ret;
  820. }
  821. Bool
  822. isurgent(unsigned int t) {
  823. Client *c;
  824. for(c = clients; c; c = c->next)
  825. if(c->isurgent && c->tags[t])
  826. return True;
  827. return False;
  828. }
  829. Bool
  830. isvisible(Client *c) {
  831. unsigned int i;
  832. for(i = 0; i < LENGTH(tags); i++)
  833. if(c->tags[i] && seltags[i])
  834. return True;
  835. return False;
  836. }
  837. void
  838. keypress(XEvent *e) {
  839. unsigned int i;
  840. KeySym keysym;
  841. XKeyEvent *ev;
  842. ev = &e->xkey;
  843. keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
  844. for(i = 0; i < LENGTH(keys); i++)
  845. if(keysym == keys[i].keysym
  846. && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state))
  847. {
  848. if(keys[i].func)
  849. keys[i].func(keys[i].arg);
  850. }
  851. }
  852. void
  853. killclient(const char *arg) {
  854. XEvent ev;
  855. if(!sel)
  856. return;
  857. if(isprotodel(sel)) {
  858. ev.type = ClientMessage;
  859. ev.xclient.window = sel->win;
  860. ev.xclient.message_type = wmatom[WMProtocols];
  861. ev.xclient.format = 32;
  862. ev.xclient.data.l[0] = wmatom[WMDelete];
  863. ev.xclient.data.l[1] = CurrentTime;
  864. XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
  865. }
  866. else
  867. XKillClient(dpy, sel->win);
  868. }
  869. void
  870. manage(Window w, XWindowAttributes *wa) {
  871. Client *c, *t = NULL;
  872. Status rettrans;
  873. Window trans;
  874. XWindowChanges wc;
  875. c = emallocz(sizeof(Client));
  876. c->tags = emallocz(TAGSZ);
  877. c->win = w;
  878. /* geometry */
  879. c->x = wa->x;
  880. c->y = wa->y;
  881. c->w = wa->width;
  882. c->h = wa->height;
  883. c->oldborder = wa->border_width;
  884. if(c->w == sw && c->h == sh) {
  885. c->x = sx;
  886. c->y = sy;
  887. c->border = wa->border_width;
  888. }
  889. else {
  890. if(c->x + c->w + 2 * c->border > wx + ww)
  891. c->x = wx + ww - c->w - 2 * c->border;
  892. if(c->y + c->h + 2 * c->border > wy + wh)
  893. c->y = wy + wh - c->h - 2 * c->border;
  894. if(c->x < wx)
  895. c->x = wx;
  896. if(c->y < wy)
  897. c->y = wy;
  898. c->border = BORDERPX;
  899. }
  900. wc.border_width = c->border;
  901. XConfigureWindow(dpy, w, CWBorderWidth, &wc);
  902. XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
  903. configure(c); /* propagates border_width, if size doesn't change */
  904. updatesizehints(c);
  905. XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
  906. grabbuttons(c, False);
  907. updatetitle(c);
  908. if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
  909. for(t = clients; t && t->win != trans; t = t->next);
  910. if(t)
  911. memcpy(c->tags, t->tags, TAGSZ);
  912. else
  913. applyrules(c);
  914. if(!c->isfloating)
  915. c->isfloating = (rettrans == Success) || c->isfixed;
  916. attach(c);
  917. attachstack(c);
  918. XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
  919. ban(c);
  920. XMapWindow(dpy, c->win);
  921. setclientstate(c, NormalState);
  922. arrange();
  923. }
  924. void
  925. mappingnotify(XEvent *e) {
  926. XMappingEvent *ev = &e->xmapping;
  927. XRefreshKeyboardMapping(ev);
  928. if(ev->request == MappingKeyboard)
  929. grabkeys();
  930. }
  931. void
  932. maprequest(XEvent *e) {
  933. static XWindowAttributes wa;
  934. XMapRequestEvent *ev = &e->xmaprequest;
  935. if(!XGetWindowAttributes(dpy, ev->window, &wa))
  936. return;
  937. if(wa.override_redirect)
  938. return;
  939. if(!getclient(ev->window))
  940. manage(ev->window, &wa);
  941. }
  942. void
  943. monocle(void) {
  944. Client *c;
  945. for(c = clients; c; c = c->next)
  946. if(isvisible(c))
  947. resize(c, mox, moy, mow, moh, RESIZEHINTS);
  948. }
  949. void
  950. movemouse(Client *c) {
  951. int x1, y1, ocx, ocy, di, nx, ny;
  952. unsigned int dui;
  953. Window dummy;
  954. XEvent ev;
  955. ocx = nx = c->x;
  956. ocy = ny = c->y;
  957. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  958. None, cursor[CurMove], CurrentTime) != GrabSuccess)
  959. return;
  960. XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  961. for(;;) {
  962. XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
  963. switch (ev.type) {
  964. case ButtonRelease:
  965. XUngrabPointer(dpy, CurrentTime);
  966. return;
  967. case ConfigureRequest:
  968. case Expose:
  969. case MapRequest:
  970. handler[ev.type](&ev);
  971. break;
  972. case MotionNotify:
  973. XSync(dpy, False);
  974. nx = ocx + (ev.xmotion.x - x1);
  975. ny = ocy + (ev.xmotion.y - y1);
  976. if(abs(wx - nx) < SNAP)
  977. nx = wx;
  978. else if(abs((wx + ww) - (nx + c->w + 2 * c->border)) < SNAP)
  979. nx = wx + ww - c->w - 2 * c->border;
  980. if(abs(wy - ny) < SNAP)
  981. ny = wy;
  982. else if(abs((wy + wh) - (ny + c->h + 2 * c->border)) < SNAP)
  983. ny = wy + wh - c->h - 2 * c->border;
  984. if(!c->isfloating && !lt->isfloating && (abs(nx - c->x) > SNAP || abs(ny - c->y) > SNAP))
  985. togglefloating(NULL);
  986. if((lt->isfloating) || c->isfloating)
  987. resize(c, nx, ny, c->w, c->h, False);
  988. break;
  989. }
  990. }
  991. }
  992. Client *
  993. nexttiled(Client *c) {
  994. for(; c && (c->isfloating || !isvisible(c)); c = c->next);
  995. return c;
  996. }
  997. void
  998. propertynotify(XEvent *e) {
  999. Client *c;
  1000. Window trans;
  1001. XPropertyEvent *ev = &e->xproperty;
  1002. if(ev->state == PropertyDelete)
  1003. return; /* ignore */
  1004. if((c = getclient(ev->window))) {
  1005. switch (ev->atom) {
  1006. default: break;
  1007. case XA_WM_TRANSIENT_FOR:
  1008. XGetTransientForHint(dpy, c->win, &trans);
  1009. if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
  1010. arrange();
  1011. break;
  1012. case XA_WM_NORMAL_HINTS:
  1013. updatesizehints(c);
  1014. break;
  1015. case XA_WM_HINTS:
  1016. updatewmhints(c);
  1017. drawbar();
  1018. break;
  1019. }
  1020. if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
  1021. updatetitle(c);
  1022. if(c == sel)
  1023. drawbar();
  1024. }
  1025. }
  1026. }
  1027. void
  1028. quit(const char *arg) {
  1029. readin = running = False;
  1030. }
  1031. void
  1032. reapply(const char *arg) {
  1033. static Bool zerotags[LENGTH(tags)] = { 0 };
  1034. Client *c;
  1035. for(c = clients; c; c = c->next) {
  1036. memcpy(c->tags, zerotags, sizeof zerotags);
  1037. applyrules(c);
  1038. }
  1039. arrange();
  1040. }
  1041. void
  1042. resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
  1043. XWindowChanges wc;
  1044. if(sizehints) {
  1045. /* set minimum possible */
  1046. if (w < 1)
  1047. w = 1;
  1048. if (h < 1)
  1049. h = 1;
  1050. /* temporarily remove base dimensions */
  1051. w -= c->basew;
  1052. h -= c->baseh;
  1053. /* adjust for aspect limits */
  1054. if (c->minay > 0 && c->maxay > 0 && c->minax > 0 && c->maxax > 0) {
  1055. if (w * c->maxay > h * c->maxax)
  1056. w = h * c->maxax / c->maxay;
  1057. else if (w * c->minay < h * c->minax)
  1058. h = w * c->minay / c->minax;
  1059. }
  1060. /* adjust for increment value */
  1061. if(c->incw)
  1062. w -= w % c->incw;
  1063. if(c->inch)
  1064. h -= h % c->inch;
  1065. /* restore base dimensions */
  1066. w += c->basew;
  1067. h += c->baseh;
  1068. if(c->minw > 0 && w < c->minw)
  1069. w = c->minw;
  1070. if(c->minh > 0 && h < c->minh)
  1071. h = c->minh;
  1072. if(c->maxw > 0 && w > c->maxw)
  1073. w = c->maxw;
  1074. if(c->maxh > 0 && h > c->maxh)
  1075. h = c->maxh;
  1076. }
  1077. if(w <= 0 || h <= 0)
  1078. return;
  1079. if(x > sx + sw)
  1080. x = sw - w - 2 * c->border;
  1081. if(y > sy + sh)
  1082. y = sh - h - 2 * c->border;
  1083. if(x + w + 2 * c->border < sx)
  1084. x = sx;
  1085. if(y + h + 2 * c->border < sy)
  1086. y = sy;
  1087. if(c->x != x || c->y != y || c->w != w || c->h != h) {
  1088. c->x = wc.x = x;
  1089. c->y = wc.y = y;
  1090. c->w = wc.width = w;
  1091. c->h = wc.height = h;
  1092. wc.border_width = c->border;
  1093. XConfigureWindow(dpy, c->win,
  1094. CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
  1095. configure(c);
  1096. XSync(dpy, False);
  1097. }
  1098. }
  1099. void
  1100. resizemouse(Client *c) {
  1101. int ocx, ocy;
  1102. int nw, nh;
  1103. XEvent ev;
  1104. ocx = c->x;
  1105. ocy = c->y;
  1106. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  1107. None, cursor[CurResize], CurrentTime) != GrabSuccess)
  1108. return;
  1109. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
  1110. for(;;) {
  1111. XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask , &ev);
  1112. switch(ev.type) {
  1113. case ButtonRelease:
  1114. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
  1115. c->w + c->border - 1, c->h + c->border - 1);
  1116. XUngrabPointer(dpy, CurrentTime);
  1117. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1118. return;
  1119. case ConfigureRequest:
  1120. case Expose:
  1121. case MapRequest:
  1122. handler[ev.type](&ev);
  1123. break;
  1124. case MotionNotify:
  1125. XSync(dpy, False);
  1126. if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
  1127. nw = 1;
  1128. if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
  1129. nh = 1;
  1130. if(!c->isfloating && !lt->isfloating && (abs(nw - c->w) > SNAP || abs(nh - c->h) > SNAP))
  1131. togglefloating(NULL);
  1132. if((lt->isfloating) || c->isfloating)
  1133. resize(c, c->x, c->y, nw, nh, True);
  1134. break;
  1135. }
  1136. }
  1137. }
  1138. void
  1139. restack(void) {
  1140. Client *c;
  1141. XEvent ev;
  1142. XWindowChanges wc;
  1143. drawbar();
  1144. if(!sel)
  1145. return;
  1146. if(sel->isfloating || lt->isfloating)
  1147. XRaiseWindow(dpy, sel->win);
  1148. if(!lt->isfloating) {
  1149. wc.stack_mode = Below;
  1150. wc.sibling = barwin;
  1151. if(!sel->isfloating) {
  1152. XConfigureWindow(dpy, sel->win, CWSibling|CWStackMode, &wc);
  1153. wc.sibling = sel->win;
  1154. }
  1155. for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
  1156. if(c == sel)
  1157. continue;
  1158. XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
  1159. wc.sibling = c->win;
  1160. }
  1161. }
  1162. XSync(dpy, False);
  1163. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1164. }
  1165. void
  1166. run(void) {
  1167. char *p;
  1168. char sbuf[sizeof stext];
  1169. fd_set rd;
  1170. int r, xfd;
  1171. unsigned int len, offset;
  1172. XEvent ev;
  1173. /* main event loop, also reads status text from stdin */
  1174. XSync(dpy, False);
  1175. xfd = ConnectionNumber(dpy);
  1176. readin = True;
  1177. offset = 0;
  1178. len = sizeof stext - 1;
  1179. sbuf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
  1180. while(running) {
  1181. FD_ZERO(&rd);
  1182. if(readin)
  1183. FD_SET(STDIN_FILENO, &rd);
  1184. FD_SET(xfd, &rd);
  1185. if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
  1186. if(errno == EINTR)
  1187. continue;
  1188. eprint("select failed\n");
  1189. }
  1190. if(FD_ISSET(STDIN_FILENO, &rd)) {
  1191. switch((r = read(STDIN_FILENO, sbuf + offset, len - offset))) {
  1192. case -1:
  1193. strncpy(stext, strerror(errno), len);
  1194. readin = False;
  1195. break;
  1196. case 0:
  1197. strncpy(stext, "EOF", 4);
  1198. readin = False;
  1199. break;
  1200. default:
  1201. for(p = sbuf + offset; r > 0; p++, r--, offset++)
  1202. if(*p == '\n' || *p == '\0') {
  1203. *p = '\0';
  1204. strncpy(stext, sbuf, len);
  1205. p += r - 1; /* p is sbuf + offset + r - 1 */
  1206. for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
  1207. offset = r;
  1208. if(r)
  1209. memmove(sbuf, p - r + 1, r);
  1210. break;
  1211. }
  1212. break;
  1213. }
  1214. drawbar();
  1215. }
  1216. while(XPending(dpy)) {
  1217. XNextEvent(dpy, &ev);
  1218. if(handler[ev.type])
  1219. (handler[ev.type])(&ev); /* call handler */
  1220. }
  1221. }
  1222. }
  1223. void
  1224. scan(void) {
  1225. unsigned int i, num;
  1226. Window *wins, d1, d2;
  1227. XWindowAttributes wa;
  1228. wins = NULL;
  1229. if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
  1230. for(i = 0; i < num; i++) {
  1231. if(!XGetWindowAttributes(dpy, wins[i], &wa)
  1232. || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
  1233. continue;
  1234. if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
  1235. manage(wins[i], &wa);
  1236. }
  1237. for(i = 0; i < num; i++) { /* now the transients */
  1238. if(!XGetWindowAttributes(dpy, wins[i], &wa))
  1239. continue;
  1240. if(XGetTransientForHint(dpy, wins[i], &d1)
  1241. && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
  1242. manage(wins[i], &wa);
  1243. }
  1244. }
  1245. if(wins)
  1246. XFree(wins);
  1247. }
  1248. void
  1249. setclientstate(Client *c, long state) {
  1250. long data[] = {state, None};
  1251. XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
  1252. PropModeReplace, (unsigned char *)data, 2);
  1253. }
  1254. void
  1255. setdefaultgeoms(void) {
  1256. /* screen dimensions */
  1257. sx = 0;
  1258. sy = 0;
  1259. sw = DisplayWidth(dpy, screen);
  1260. sh = DisplayHeight(dpy, screen);
  1261. /* bar position */
  1262. bx = sx;
  1263. by = sy;
  1264. bw = sw;
  1265. bh = dc.font.height + 2;
  1266. /* window area */
  1267. wx = sx;
  1268. wy = sy + bh;
  1269. ww = sw;
  1270. wh = sh - bh;
  1271. /* master area */
  1272. mx = wx;
  1273. my = wy;
  1274. mw = ((float)sw) * 0.55;
  1275. mh = wh;
  1276. /* tile area */
  1277. tx = wx;
  1278. ty = wy;
  1279. tw = ww - mw;
  1280. th = wh;
  1281. /* monocle area */
  1282. mox = wx;
  1283. moy = wy;
  1284. mow = ww;
  1285. moh = wh;
  1286. if(dc.drawable != 0)
  1287. XFreePixmap(dpy, dc.drawable);
  1288. dc.drawable = XCreatePixmap(dpy, root, bw, bh, DefaultDepth(dpy, screen));
  1289. XMoveResizeWindow(dpy, barwin, bx, by, bw, bh);
  1290. }
  1291. void
  1292. setlayout(const char *arg) {
  1293. static Layout *revert = 0;
  1294. unsigned int i;
  1295. if(!arg)
  1296. return;
  1297. for(i = 0; i < LENGTH(layouts); i++)
  1298. if(!strcmp(arg, layouts[i].symbol))
  1299. break;
  1300. if(i == LENGTH(layouts))
  1301. return;
  1302. if(revert && &layouts[i] == lt)
  1303. lt = revert;
  1304. else {
  1305. revert = lt;
  1306. lt = &layouts[i];
  1307. }
  1308. if(sel)
  1309. arrange();
  1310. else
  1311. drawbar();
  1312. }
  1313. void
  1314. setup(void) {
  1315. unsigned int i;
  1316. XSetWindowAttributes wa;
  1317. /* init screen */
  1318. screen = DefaultScreen(dpy);
  1319. root = RootWindow(dpy, screen);
  1320. initfont(FONT);
  1321. /* apply default geometries */
  1322. setgeoms();
  1323. /* init atoms */
  1324. wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
  1325. wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
  1326. wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
  1327. wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
  1328. netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
  1329. netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
  1330. /* init cursors */
  1331. wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
  1332. cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
  1333. cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
  1334. /* init appearance */
  1335. dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
  1336. dc.norm[ColBG] = getcolor(NORMBGCOLOR);
  1337. dc.norm[ColFG] = getcolor(NORMFGCOLOR);
  1338. dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
  1339. dc.sel[ColBG] = getcolor(SELBGCOLOR);
  1340. dc.sel[ColFG] = getcolor(SELFGCOLOR);
  1341. initfont(FONT);
  1342. dc.h = bh;
  1343. dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
  1344. dc.gc = XCreateGC(dpy, root, 0, 0);
  1345. XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
  1346. if(!dc.font.set)
  1347. XSetFont(dpy, dc.gc, dc.font.xfont->fid);
  1348. /* init tags */
  1349. seltags = emallocz(TAGSZ);
  1350. prevtags = emallocz(TAGSZ);
  1351. seltags[0] = prevtags[0] = True;
  1352. /* init layouts */
  1353. lt = &layouts[0];
  1354. /* init bar */
  1355. for(blw = i = 0; i < LENGTH(layouts); i++) {
  1356. i = textw(layouts[i].symbol);
  1357. if(i > blw)
  1358. blw = i;
  1359. }
  1360. wa.override_redirect = 1;
  1361. wa.background_pixmap = ParentRelative;
  1362. wa.event_mask = ButtonPressMask|ExposureMask;
  1363. barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
  1364. CopyFromParent, DefaultVisual(dpy, screen),
  1365. CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
  1366. XDefineCursor(dpy, barwin, cursor[CurNormal]);
  1367. XMapRaised(dpy, barwin);
  1368. strcpy(stext, "dwm-"VERSION);
  1369. drawbar();
  1370. /* EWMH support per view */
  1371. XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
  1372. PropModeReplace, (unsigned char *) netatom, NetLast);
  1373. /* select for events */
  1374. wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
  1375. |EnterWindowMask|LeaveWindowMask|StructureNotifyMask;
  1376. XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
  1377. XSelectInput(dpy, root, wa.event_mask);
  1378. /* grab keys */
  1379. grabkeys();
  1380. }
  1381. void
  1382. spawn(const char *arg) {
  1383. static char *shell = NULL;
  1384. if(!shell && !(shell = getenv("SHELL")))
  1385. shell = "/bin/sh";
  1386. if(!arg)
  1387. return;
  1388. /* The double-fork construct avoids zombie processes and keeps the code
  1389. * clean from stupid signal handlers. */
  1390. if(fork() == 0) {
  1391. if(fork() == 0) {
  1392. if(dpy)
  1393. close(ConnectionNumber(dpy));
  1394. setsid();
  1395. execl(shell, shell, "-c", arg, (char *)NULL);
  1396. fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg);
  1397. perror(" failed");
  1398. }
  1399. exit(0);
  1400. }
  1401. wait(0);
  1402. }
  1403. void
  1404. tag(const char *arg) {
  1405. unsigned int i;
  1406. if(!sel)
  1407. return;
  1408. for(i = 0; i < LENGTH(tags); i++)
  1409. sel->tags[i] = (NULL == arg);
  1410. sel->tags[idxoftag(arg)] = True;
  1411. arrange();
  1412. }
  1413. unsigned int
  1414. textnw(const char *text, unsigned int len) {
  1415. XRectangle r;
  1416. if(dc.font.set) {
  1417. XmbTextExtents(dc.font.set, text, len, NULL, &r);
  1418. return r.width;
  1419. }
  1420. return XTextWidth(dc.font.xfont, text, len);
  1421. }
  1422. unsigned int
  1423. textw(const char *text) {
  1424. return textnw(text, strlen(text)) + dc.font.height;
  1425. }
  1426. void
  1427. tileresize(Client *c, int x, int y, int w, int h) {
  1428. resize(c, x, y, w, h, RESIZEHINTS);
  1429. if((RESIZEHINTS) && ((c->h < bh) || (c->h > h) || (c->w < bh) || (c->w > w)))
  1430. /* client doesn't accept size constraints */
  1431. resize(c, x, y, w, h, False);
  1432. }
  1433. void
  1434. tileh(void) {
  1435. tilehstack(tilemaster());
  1436. }
  1437. void
  1438. tilehstack(unsigned int n) {
  1439. int i, x, w;
  1440. Client *c;
  1441. if(n == 0)
  1442. return;
  1443. x = tx;
  1444. w = tw / n;
  1445. if(w < bh)
  1446. w = tw;
  1447. for(i = 0, c = nexttiled(clients); c; c = nexttiled(c->next), i++)
  1448. if(i > 0) {
  1449. if(i > 1 && i == n) /* remainder */
  1450. tileresize(c, x, ty, (tx + tw) - x - 2 * c->border,
  1451. th - 2 * c->border);
  1452. else
  1453. tileresize(c, x, ty, w - 2 * c->border,
  1454. th - 2 * c->border);
  1455. if(w != tw)
  1456. x = c->x + c->w + 2 * c->border;
  1457. }
  1458. }
  1459. unsigned int
  1460. tilemaster(void) {
  1461. unsigned int n;
  1462. Client *c, *mc;
  1463. for(n = 0, mc = c = nexttiled(clients); c; c = nexttiled(c->next))
  1464. n++;
  1465. if(n == 0)
  1466. return 0;
  1467. if(n == 1)
  1468. tileresize(mc, mox, moy, mow - 2 * mc->border, moh - 2 * mc->border);
  1469. else
  1470. tileresize(mc, mx, my, mw - 2 * mc->border, mh - 2 * mc->border);
  1471. return n - 1;
  1472. }
  1473. void
  1474. tilev(void) {
  1475. tilevstack(tilemaster());
  1476. }
  1477. void
  1478. tilevstack(unsigned int n) {
  1479. int i, y, h;
  1480. Client *c;
  1481. if(n == 0)
  1482. return;
  1483. y = ty;
  1484. h = th / n;
  1485. if(h < bh)
  1486. h = th;
  1487. for(i = 0, c = nexttiled(clients); c; c = nexttiled(c->next), i++)
  1488. if(i > 0) {
  1489. if(i > 1 && i == n) /* remainder */
  1490. tileresize(c, tx, y, tw - 2 * c->border,
  1491. (ty + th) - y - 2 * c->border);
  1492. else
  1493. tileresize(c, tx, y, tw - 2 * c->border,
  1494. h - 2 * c->border);
  1495. if(h != th)
  1496. y = c->y + c->h + 2 * c->border;
  1497. }
  1498. }
  1499. void
  1500. togglefloating(const char *arg) {
  1501. if(!sel)
  1502. return;
  1503. sel->isfloating = !sel->isfloating;
  1504. if(sel->isfloating)
  1505. resize(sel, sel->x, sel->y, sel->w, sel->h, True);
  1506. arrange();
  1507. }
  1508. void
  1509. toggletag(const char *arg) {
  1510. unsigned int i, j;
  1511. if(!sel)
  1512. return;
  1513. i = idxoftag(arg);
  1514. sel->tags[i] = !sel->tags[i];
  1515. for(j = 0; j < LENGTH(tags) && !sel->tags[j]; j++);
  1516. if(j == LENGTH(tags))
  1517. sel->tags[i] = True; /* at least one tag must be enabled */
  1518. arrange();
  1519. }
  1520. void
  1521. toggleview(const char *arg) {
  1522. unsigned int i, j;
  1523. i = idxoftag(arg);
  1524. seltags[i] = !seltags[i];
  1525. for(j = 0; j < LENGTH(tags) && !seltags[j]; j++);
  1526. if(j == LENGTH(tags))
  1527. seltags[i] = True; /* at least one tag must be viewed */
  1528. arrange();
  1529. }
  1530. void
  1531. unban(Client *c) {
  1532. if(!c->isbanned)
  1533. return;
  1534. XMoveWindow(dpy, c->win, c->x, c->y);
  1535. c->isbanned = False;
  1536. }
  1537. void
  1538. unmanage(Client *c) {
  1539. XWindowChanges wc;
  1540. wc.border_width = c->oldborder;
  1541. /* The server grab construct avoids race conditions. */
  1542. XGrabServer(dpy);
  1543. XSetErrorHandler(xerrordummy);
  1544. XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
  1545. detach(c);
  1546. detachstack(c);
  1547. if(sel == c)
  1548. focus(NULL);
  1549. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  1550. setclientstate(c, WithdrawnState);
  1551. free(c->tags);
  1552. free(c);
  1553. XSync(dpy, False);
  1554. XSetErrorHandler(xerror);
  1555. XUngrabServer(dpy);
  1556. arrange();
  1557. }
  1558. void
  1559. unmapnotify(XEvent *e) {
  1560. Client *c;
  1561. XUnmapEvent *ev = &e->xunmap;
  1562. if((c = getclient(ev->window)))
  1563. unmanage(c);
  1564. }
  1565. void
  1566. updatesizehints(Client *c) {
  1567. long msize;
  1568. XSizeHints size;
  1569. if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
  1570. size.flags = PSize;
  1571. c->flags = size.flags;
  1572. if(c->flags & PBaseSize) {
  1573. c->basew = size.base_width;
  1574. c->baseh = size.base_height;
  1575. }
  1576. else if(c->flags & PMinSize) {
  1577. c->basew = size.min_width;
  1578. c->baseh = size.min_height;
  1579. }
  1580. else
  1581. c->basew = c->baseh = 0;
  1582. if(c->flags & PResizeInc) {
  1583. c->incw = size.width_inc;
  1584. c->inch = size.height_inc;
  1585. }
  1586. else
  1587. c->incw = c->inch = 0;
  1588. if(c->flags & PMaxSize) {
  1589. c->maxw = size.max_width;
  1590. c->maxh = size.max_height;
  1591. }
  1592. else
  1593. c->maxw = c->maxh = 0;
  1594. if(c->flags & PMinSize) {
  1595. c->minw = size.min_width;
  1596. c->minh = size.min_height;
  1597. }
  1598. else if(c->flags & PBaseSize) {
  1599. c->minw = size.base_width;
  1600. c->minh = size.base_height;
  1601. }
  1602. else
  1603. c->minw = c->minh = 0;
  1604. if(c->flags & PAspect) {
  1605. c->minax = size.min_aspect.x;
  1606. c->maxax = size.max_aspect.x;
  1607. c->minay = size.min_aspect.y;
  1608. c->maxay = size.max_aspect.y;
  1609. }
  1610. else
  1611. c->minax = c->maxax = c->minay = c->maxay = 0;
  1612. c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
  1613. && c->maxw == c->minw && c->maxh == c->minh);
  1614. }
  1615. void
  1616. updatetitle(Client *c) {
  1617. if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
  1618. gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
  1619. }
  1620. void
  1621. updatewmhints(Client *c) {
  1622. XWMHints *wmh;
  1623. if((wmh = XGetWMHints(dpy, c->win))) {
  1624. if(c == sel)
  1625. sel->isurgent = False;
  1626. else
  1627. c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
  1628. XFree(wmh);
  1629. }
  1630. }
  1631. void
  1632. view(const char *arg) {
  1633. unsigned int i;
  1634. for(i = 0; i < LENGTH(tags); i++)
  1635. tmp[i] = (NULL == arg);
  1636. tmp[idxoftag(arg)] = True;
  1637. if(memcmp(seltags, tmp, TAGSZ) != 0) {
  1638. memcpy(prevtags, seltags, TAGSZ);
  1639. memcpy(seltags, tmp, TAGSZ);
  1640. arrange();
  1641. }
  1642. }
  1643. void
  1644. viewprevtag(const char *arg) {
  1645. memcpy(tmp, seltags, TAGSZ);
  1646. memcpy(seltags, prevtags, TAGSZ);
  1647. memcpy(prevtags, tmp, TAGSZ);
  1648. arrange();
  1649. }
  1650. /* There's no way to check accesses to destroyed windows, thus those cases are
  1651. * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
  1652. * default error handler, which may call exit. */
  1653. int
  1654. xerror(Display *dpy, XErrorEvent *ee) {
  1655. if(ee->error_code == BadWindow
  1656. || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
  1657. || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
  1658. || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
  1659. || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
  1660. || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
  1661. || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
  1662. || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
  1663. return 0;
  1664. fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
  1665. ee->request_code, ee->error_code);
  1666. return xerrorxlib(dpy, ee); /* may call exit */
  1667. }
  1668. int
  1669. xerrordummy(Display *dpy, XErrorEvent *ee) {
  1670. return 0;
  1671. }
  1672. /* Startup Error handler to check if another window manager
  1673. * is already running. */
  1674. int
  1675. xerrorstart(Display *dpy, XErrorEvent *ee) {
  1676. otherwm = True;
  1677. return -1;
  1678. }
  1679. void
  1680. zoom(const char *arg) {
  1681. Client *c = sel;
  1682. if(!sel || lt->isfloating || sel->isfloating)
  1683. return;
  1684. if(c == nexttiled(clients))
  1685. if(!(c = nexttiled(c->next)))
  1686. return;
  1687. detach(c);
  1688. attach(c);
  1689. focus(c);
  1690. arrange();
  1691. }
  1692. int
  1693. main(int argc, char *argv[]) {
  1694. if(argc == 2 && !strcmp("-v", argv[1]))
  1695. eprint("dwm-"VERSION", © 2006-2008 dwm engineers, see LICENSE for details\n");
  1696. else if(argc != 1)
  1697. eprint("usage: dwm [-v]\n");
  1698. setlocale(LC_CTYPE, "");
  1699. if(!(dpy = XOpenDisplay(0)))
  1700. eprint("dwm: cannot open display\n");
  1701. checkotherwm();
  1702. setup();
  1703. scan();
  1704. run();
  1705. cleanup();
  1706. XCloseDisplay(dpy);
  1707. return 0;
  1708. }