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