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