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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. For each client dwm
  21. * creates a small title window, which is resized whenever the (_NET_)WM_NAME
  22. * properties are updated or the client is moved/resized.
  23. *
  24. * Keys and tagging rules are organized as arrays and defined in config.h.
  25. *
  26. * To understand everything else, start reading main().
  27. */
  28. #include <errno.h>
  29. #include <locale.h>
  30. #include <stdarg.h>
  31. #include <stdio.h>
  32. #include <stdlib.h>
  33. #include <string.h>
  34. #include <unistd.h>
  35. #include <sys/select.h>
  36. #include <sys/types.h>
  37. #include <sys/wait.h>
  38. #include <regex.h>
  39. #include <X11/cursorfont.h>
  40. #include <X11/keysym.h>
  41. #include <X11/Xatom.h>
  42. #include <X11/Xlib.h>
  43. #include <X11/Xproto.h>
  44. #include <X11/Xutil.h>
  45. /* macros */
  46. #define BUTTONMASK (ButtonPressMask | ButtonReleaseMask)
  47. #define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
  48. #define MOUSEMASK (BUTTONMASK | PointerMotionMask)
  49. /* enums */
  50. enum { BarTop, BarBot, BarOff }; /* bar position */
  51. enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
  52. enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
  53. enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
  54. enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
  55. /* typedefs */
  56. typedef struct Client Client;
  57. struct Client {
  58. char name[256];
  59. int x, y, w, h;
  60. int rx, ry, rw, rh; /* revert geometry */
  61. int basew, baseh, incw, inch, maxw, maxh, minw, minh;
  62. int minax, maxax, minay, maxay;
  63. long flags;
  64. unsigned int border, oldborder;
  65. Bool isbanned, isfixed, ismax, isfloating, wasfloating;
  66. Bool *tags;
  67. Client *next;
  68. Client *prev;
  69. Client *snext;
  70. Window win;
  71. };
  72. typedef struct {
  73. int x, y, w, h;
  74. unsigned long norm[ColLast];
  75. unsigned long sel[ColLast];
  76. Drawable drawable;
  77. GC gc;
  78. struct {
  79. int ascent;
  80. int descent;
  81. int height;
  82. XFontSet set;
  83. XFontStruct *xfont;
  84. } font;
  85. } DC; /* draw context */
  86. typedef struct {
  87. unsigned long mod;
  88. KeySym keysym;
  89. void (*func)(const char *arg);
  90. const char *arg;
  91. } Key;
  92. typedef struct {
  93. const char *symbol;
  94. void (*arrange)(void);
  95. } Layout;
  96. typedef struct {
  97. const char *prop;
  98. const char *tags;
  99. Bool isfloating;
  100. } Rule;
  101. typedef struct {
  102. regex_t *propregex;
  103. regex_t *tagregex;
  104. } Regs;
  105. /* function declarations */
  106. void applyrules(Client *c);
  107. void arrange(void);
  108. void attach(Client *c);
  109. void attachstack(Client *c);
  110. void ban(Client *c);
  111. void buttonpress(XEvent *e);
  112. void checkotherwm(void);
  113. void cleanup(void);
  114. void compileregs(void);
  115. void configure(Client *c);
  116. void configurenotify(XEvent *e);
  117. void configurerequest(XEvent *e);
  118. void destroynotify(XEvent *e);
  119. void detach(Client *c);
  120. void detachstack(Client *c);
  121. void drawbar(void);
  122. void drawsquare(Bool filled, Bool empty, unsigned long col[ColLast]);
  123. void drawtext(const char *text, unsigned long col[ColLast]);
  124. void *emallocz(unsigned int size);
  125. void enternotify(XEvent *e);
  126. void eprint(const char *errstr, ...);
  127. void expose(XEvent *e);
  128. void floating(void); /* default floating layout */
  129. void focus(Client *c);
  130. void focusnext(const char *arg);
  131. void focusprev(const char *arg);
  132. Client *getclient(Window w);
  133. unsigned long getcolor(const char *colstr);
  134. long getstate(Window w);
  135. Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
  136. void grabbuttons(Client *c, Bool focused);
  137. unsigned int idxoftag(const char *tag);
  138. void initfont(const char *fontstr);
  139. Bool isarrange(void (*func)());
  140. Bool isoccupied(unsigned int t);
  141. Bool isprotodel(Client *c);
  142. Bool isvisible(Client *c);
  143. void keypress(XEvent *e);
  144. void killclient(const char *arg);
  145. void leavenotify(XEvent *e);
  146. void manage(Window w, XWindowAttributes *wa);
  147. void mappingnotify(XEvent *e);
  148. void maprequest(XEvent *e);
  149. void movemouse(Client *c);
  150. Client *nexttiled(Client *c);
  151. void propertynotify(XEvent *e);
  152. void quit(const char *arg);
  153. void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
  154. void resizemouse(Client *c);
  155. void restack(void);
  156. void run(void);
  157. void scan(void);
  158. void setclientstate(Client *c, long state);
  159. void setlayout(const char *arg);
  160. void setmwfact(const char *arg);
  161. void setup(void);
  162. void spawn(const char *arg);
  163. void tag(const char *arg);
  164. unsigned int textnw(const char *text, unsigned int len);
  165. unsigned int textw(const char *text);
  166. void tile(void);
  167. void togglebar(const char *arg);
  168. void togglefloating(const char *arg);
  169. void togglemax(const char *arg);
  170. void toggletag(const char *arg);
  171. void toggleview(const char *arg);
  172. void unban(Client *c);
  173. void unmanage(Client *c);
  174. void unmapnotify(XEvent *e);
  175. void updatebarpos(void);
  176. void updatesizehints(Client *c);
  177. void updatetitle(Client *c);
  178. void view(const char *arg);
  179. void viewprevtag(const char *arg); /* views previous selected tags */
  180. int xerror(Display *dpy, XErrorEvent *ee);
  181. int xerrordummy(Display *dsply, XErrorEvent *ee);
  182. int xerrorstart(Display *dsply, XErrorEvent *ee);
  183. void zoom(const char *arg);
  184. /* variables */
  185. char stext[256];
  186. double mwfact;
  187. int screen, sx, sy, sw, sh, wax, way, waw, wah;
  188. int (*xerrorxlib)(Display *, XErrorEvent *);
  189. unsigned int bh, bpos;
  190. unsigned int blw = 0;
  191. unsigned int ltidx = 0; /* default */
  192. unsigned int nlayouts = 0;
  193. unsigned int nrules = 0;
  194. unsigned int numlockmask = 0;
  195. void (*handler[LASTEvent]) (XEvent *) = {
  196. [ButtonPress] = buttonpress,
  197. [ConfigureRequest] = configurerequest,
  198. [ConfigureNotify] = configurenotify,
  199. [DestroyNotify] = destroynotify,
  200. [EnterNotify] = enternotify,
  201. [LeaveNotify] = leavenotify,
  202. [Expose] = expose,
  203. [KeyPress] = keypress,
  204. [MappingNotify] = mappingnotify,
  205. [MapRequest] = maprequest,
  206. [PropertyNotify] = propertynotify,
  207. [UnmapNotify] = unmapnotify
  208. };
  209. Atom wmatom[WMLast], netatom[NetLast];
  210. Bool otherwm, readin;
  211. Bool running = True;
  212. Bool selscreen = True;
  213. Client *clients = NULL;
  214. Client *sel = NULL;
  215. Client *stack = NULL;
  216. Cursor cursor[CurLast];
  217. Display *dpy;
  218. DC dc = {0};
  219. Window barwin, root;
  220. Regs *regs = NULL;
  221. /* configuration, allows nested code to access above variables */
  222. #include "config.h"
  223. #define NTAGS (sizeof tags / sizeof tags[0])
  224. Bool seltags[NTAGS] = {[0] = True};
  225. Bool prevtags[NTAGS] = {[0] = True};
  226. /* function implementations */
  227. void
  228. applyrules(Client *c) {
  229. static char buf[512];
  230. unsigned int i, j;
  231. regmatch_t tmp;
  232. Bool matched = False;
  233. XClassHint ch = { 0 };
  234. /* rule matching */
  235. XGetClassHint(dpy, c->win, &ch);
  236. snprintf(buf, sizeof buf, "%s:%s:%s",
  237. ch.res_class ? ch.res_class : "",
  238. ch.res_name ? ch.res_name : "", c->name);
  239. for(i = 0; i < nrules; i++)
  240. if(regs[i].propregex && !regexec(regs[i].propregex, buf, 1, &tmp, 0)) {
  241. c->isfloating = rules[i].isfloating;
  242. for(j = 0; regs[i].tagregex && j < NTAGS; j++) {
  243. if(!regexec(regs[i].tagregex, tags[j], 1, &tmp, 0)) {
  244. matched = True;
  245. c->tags[j] = True;
  246. }
  247. }
  248. }
  249. if(ch.res_class)
  250. XFree(ch.res_class);
  251. if(ch.res_name)
  252. XFree(ch.res_name);
  253. if(!matched)
  254. memcpy(c->tags, seltags, sizeof seltags);
  255. }
  256. void
  257. arrange(void) {
  258. Client *c;
  259. for(c = clients; c; c = c->next)
  260. if(isvisible(c))
  261. unban(c);
  262. else
  263. ban(c);
  264. layouts[ltidx].arrange();
  265. focus(NULL);
  266. restack();
  267. }
  268. void
  269. attach(Client *c) {
  270. if(clients)
  271. clients->prev = c;
  272. c->next = clients;
  273. clients = c;
  274. }
  275. void
  276. attachstack(Client *c) {
  277. c->snext = stack;
  278. stack = c;
  279. }
  280. void
  281. ban(Client *c) {
  282. if(c->isbanned)
  283. return;
  284. XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  285. c->isbanned = True;
  286. }
  287. void
  288. buttonpress(XEvent *e) {
  289. unsigned int i, x;
  290. Client *c;
  291. XButtonPressedEvent *ev = &e->xbutton;
  292. if(barwin == ev->window) {
  293. x = 0;
  294. for(i = 0; i < NTAGS; i++) {
  295. x += textw(tags[i]);
  296. if(ev->x < x) {
  297. if(ev->button == Button1) {
  298. if(ev->state & MODKEY)
  299. tag(tags[i]);
  300. else
  301. view(tags[i]);
  302. }
  303. else if(ev->button == Button3) {
  304. if(ev->state & MODKEY)
  305. toggletag(tags[i]);
  306. else
  307. toggleview(tags[i]);
  308. }
  309. return;
  310. }
  311. }
  312. if((ev->x < x + blw) && ev->button == Button1)
  313. setlayout(NULL);
  314. }
  315. else if((c = getclient(ev->window))) {
  316. focus(c);
  317. if(CLEANMASK(ev->state) != MODKEY)
  318. return;
  319. if(ev->button == Button1) {
  320. if(isarrange(floating) || c->isfloating)
  321. restack();
  322. else
  323. togglefloating(NULL);
  324. movemouse(c);
  325. }
  326. else if(ev->button == Button2) {
  327. if((ISTILE) && !c->isfixed && c->isfloating)
  328. togglefloating(NULL);
  329. else
  330. zoom(NULL);
  331. }
  332. else if(ev->button == Button3 && !c->isfixed) {
  333. if(isarrange(floating) || c->isfloating)
  334. restack();
  335. else
  336. togglefloating(NULL);
  337. resizemouse(c);
  338. }
  339. }
  340. }
  341. void
  342. checkotherwm(void) {
  343. otherwm = False;
  344. XSetErrorHandler(xerrorstart);
  345. /* this causes an error if some other window manager is running */
  346. XSelectInput(dpy, root, SubstructureRedirectMask);
  347. XSync(dpy, False);
  348. if(otherwm)
  349. eprint("dwm: another window manager is already running\n");
  350. XSync(dpy, False);
  351. XSetErrorHandler(NULL);
  352. xerrorxlib = XSetErrorHandler(xerror);
  353. XSync(dpy, False);
  354. }
  355. void
  356. cleanup(void) {
  357. close(STDIN_FILENO);
  358. while(stack) {
  359. unban(stack);
  360. unmanage(stack);
  361. }
  362. if(dc.font.set)
  363. XFreeFontSet(dpy, dc.font.set);
  364. else
  365. XFreeFont(dpy, dc.font.xfont);
  366. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  367. XFreePixmap(dpy, dc.drawable);
  368. XFreeGC(dpy, dc.gc);
  369. XDestroyWindow(dpy, barwin);
  370. XFreeCursor(dpy, cursor[CurNormal]);
  371. XFreeCursor(dpy, cursor[CurResize]);
  372. XFreeCursor(dpy, cursor[CurMove]);
  373. XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
  374. XSync(dpy, False);
  375. }
  376. void
  377. compileregs(void) {
  378. unsigned int i;
  379. regex_t *reg;
  380. if(regs)
  381. return;
  382. nrules = sizeof rules / sizeof rules[0];
  383. regs = emallocz(nrules * sizeof(Regs));
  384. for(i = 0; i < nrules; i++) {
  385. if(rules[i].prop) {
  386. reg = emallocz(sizeof(regex_t));
  387. if(regcomp(reg, rules[i].prop, REG_EXTENDED))
  388. free(reg);
  389. else
  390. regs[i].propregex = reg;
  391. }
  392. if(rules[i].tags) {
  393. reg = emallocz(sizeof(regex_t));
  394. if(regcomp(reg, rules[i].tags, REG_EXTENDED))
  395. free(reg);
  396. else
  397. regs[i].tagregex = reg;
  398. }
  399. }
  400. }
  401. void
  402. configure(Client *c) {
  403. XConfigureEvent ce;
  404. ce.type = ConfigureNotify;
  405. ce.display = dpy;
  406. ce.event = c->win;
  407. ce.window = c->win;
  408. ce.x = c->x;
  409. ce.y = c->y;
  410. ce.width = c->w;
  411. ce.height = c->h;
  412. ce.border_width = c->border;
  413. ce.above = None;
  414. ce.override_redirect = False;
  415. XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
  416. }
  417. void
  418. configurenotify(XEvent *e) {
  419. XConfigureEvent *ev = &e->xconfigure;
  420. if(ev->window == root && (ev->width != sw || ev->height != sh)) {
  421. sw = ev->width;
  422. sh = ev->height;
  423. XFreePixmap(dpy, dc.drawable);
  424. dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
  425. XResizeWindow(dpy, barwin, sw, bh);
  426. updatebarpos();
  427. arrange();
  428. }
  429. }
  430. void
  431. configurerequest(XEvent *e) {
  432. Client *c;
  433. XConfigureRequestEvent *ev = &e->xconfigurerequest;
  434. XWindowChanges wc;
  435. if((c = getclient(ev->window))) {
  436. c->ismax = False;
  437. if(ev->value_mask & CWBorderWidth)
  438. c->border = ev->border_width;
  439. if(c->isfixed || c->isfloating || isarrange(floating)) {
  440. if(ev->value_mask & CWX)
  441. c->x = ev->x;
  442. if(ev->value_mask & CWY)
  443. c->y = ev->y;
  444. if(ev->value_mask & CWWidth)
  445. c->w = ev->width;
  446. if(ev->value_mask & CWHeight)
  447. c->h = ev->height;
  448. if((c->x + c->w) > sw && c->isfloating)
  449. c->x = sw / 2 - c->w / 2; /* center in x direction */
  450. if((c->y + c->h) > sh && c->isfloating)
  451. c->y = sh / 2 - c->h / 2; /* center in y direction */
  452. if((ev->value_mask & (CWX | CWY))
  453. && !(ev->value_mask & (CWWidth | CWHeight)))
  454. configure(c);
  455. if(isvisible(c))
  456. XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
  457. }
  458. else
  459. configure(c);
  460. }
  461. else {
  462. wc.x = ev->x;
  463. wc.y = ev->y;
  464. wc.width = ev->width;
  465. wc.height = ev->height;
  466. wc.border_width = ev->border_width;
  467. wc.sibling = ev->above;
  468. wc.stack_mode = ev->detail;
  469. XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
  470. }
  471. XSync(dpy, False);
  472. }
  473. void
  474. destroynotify(XEvent *e) {
  475. Client *c;
  476. XDestroyWindowEvent *ev = &e->xdestroywindow;
  477. if((c = getclient(ev->window)))
  478. unmanage(c);
  479. }
  480. void
  481. detach(Client *c) {
  482. if(c->prev)
  483. c->prev->next = c->next;
  484. if(c->next)
  485. c->next->prev = c->prev;
  486. if(c == clients)
  487. clients = c->next;
  488. c->next = c->prev = NULL;
  489. }
  490. void
  491. detachstack(Client *c) {
  492. Client **tc;
  493. for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
  494. *tc = c->snext;
  495. }
  496. void
  497. drawbar(void) {
  498. int i, x;
  499. dc.x = dc.y = 0;
  500. for(i = 0; i < NTAGS; i++) {
  501. dc.w = textw(tags[i]);
  502. if(seltags[i]) {
  503. drawtext(tags[i], dc.sel);
  504. drawsquare(sel && sel->tags[i], isoccupied(i), dc.sel);
  505. }
  506. else {
  507. drawtext(tags[i], dc.norm);
  508. drawsquare(sel && sel->tags[i], isoccupied(i), dc.norm);
  509. }
  510. dc.x += dc.w;
  511. }
  512. dc.w = blw;
  513. drawtext(layouts[ltidx].symbol, dc.norm);
  514. x = dc.x + dc.w;
  515. dc.w = textw(stext);
  516. dc.x = sw - dc.w;
  517. if(dc.x < x) {
  518. dc.x = x;
  519. dc.w = sw - x;
  520. }
  521. drawtext(stext, dc.norm);
  522. if((dc.w = dc.x - x) > bh) {
  523. dc.x = x;
  524. if(sel) {
  525. drawtext(sel->name, dc.sel);
  526. drawsquare(sel->ismax, sel->isfloating, dc.sel);
  527. }
  528. else
  529. drawtext(NULL, dc.norm);
  530. }
  531. XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, sw, bh, 0, 0);
  532. XSync(dpy, False);
  533. }
  534. void
  535. drawsquare(Bool filled, Bool empty, unsigned long col[ColLast]) {
  536. int x;
  537. XGCValues gcv;
  538. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  539. gcv.foreground = col[ColFG];
  540. XChangeGC(dpy, dc.gc, GCForeground, &gcv);
  541. x = (dc.font.ascent + dc.font.descent + 2) / 4;
  542. r.x = dc.x + 1;
  543. r.y = dc.y + 1;
  544. if(filled) {
  545. r.width = r.height = x + 1;
  546. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  547. }
  548. else if(empty) {
  549. r.width = r.height = x;
  550. XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  551. }
  552. }
  553. void
  554. drawtext(const char *text, unsigned long col[ColLast]) {
  555. int x, y, w, h;
  556. static char buf[256];
  557. unsigned int len, olen;
  558. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  559. XSetForeground(dpy, dc.gc, col[ColBG]);
  560. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  561. if(!text)
  562. return;
  563. w = 0;
  564. olen = len = strlen(text);
  565. if(len >= sizeof buf)
  566. len = sizeof buf - 1;
  567. memcpy(buf, text, len);
  568. buf[len] = 0;
  569. h = dc.font.ascent + dc.font.descent;
  570. y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  571. x = dc.x + (h / 2);
  572. /* shorten text if necessary */
  573. while(len && (w = textnw(buf, len)) > dc.w - h)
  574. buf[--len] = 0;
  575. if(len < olen) {
  576. if(len > 1)
  577. buf[len - 1] = '.';
  578. if(len > 2)
  579. buf[len - 2] = '.';
  580. if(len > 3)
  581. buf[len - 3] = '.';
  582. }
  583. if(w > dc.w)
  584. return; /* too long */
  585. XSetForeground(dpy, dc.gc, col[ColFG]);
  586. if(dc.font.set)
  587. XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  588. else
  589. XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  590. }
  591. void *
  592. emallocz(unsigned int size) {
  593. void *res = calloc(1, size);
  594. if(!res)
  595. eprint("fatal: could not malloc() %u bytes\n", size);
  596. return res;
  597. }
  598. void
  599. enternotify(XEvent *e) {
  600. Client *c;
  601. XCrossingEvent *ev = &e->xcrossing;
  602. if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
  603. return;
  604. if((c = getclient(ev->window)))
  605. focus(c);
  606. else if(ev->window == root) {
  607. selscreen = True;
  608. focus(NULL);
  609. }
  610. }
  611. void
  612. eprint(const char *errstr, ...) {
  613. va_list ap;
  614. va_start(ap, errstr);
  615. vfprintf(stderr, errstr, ap);
  616. va_end(ap);
  617. exit(EXIT_FAILURE);
  618. }
  619. void
  620. expose(XEvent *e) {
  621. XExposeEvent *ev = &e->xexpose;
  622. if(ev->count == 0) {
  623. if(barwin == ev->window)
  624. drawbar();
  625. }
  626. }
  627. void
  628. floating(void) { /* default floating layout */
  629. Client *c;
  630. for(c = clients; c; c = c->next)
  631. if(isvisible(c))
  632. resize(c, c->x, c->y, c->w, c->h, True);
  633. }
  634. void
  635. focus(Client *c) {
  636. if((!c && selscreen) || (c && !isvisible(c)))
  637. for(c = stack; c && !isvisible(c); c = c->snext);
  638. if(sel && sel != c) {
  639. grabbuttons(sel, False);
  640. XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
  641. }
  642. if(c) {
  643. detachstack(c);
  644. attachstack(c);
  645. grabbuttons(c, True);
  646. }
  647. sel = c;
  648. drawbar();
  649. if(!selscreen)
  650. return;
  651. if(c) {
  652. XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
  653. XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  654. }
  655. else
  656. XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
  657. }
  658. void
  659. focusnext(const char *arg) {
  660. Client *c;
  661. if(!sel)
  662. return;
  663. for(c = sel->next; c && !isvisible(c); c = c->next);
  664. if(!c)
  665. for(c = clients; c && !isvisible(c); c = c->next);
  666. if(c) {
  667. focus(c);
  668. restack();
  669. }
  670. }
  671. void
  672. focusprev(const char *arg) {
  673. Client *c;
  674. if(!sel)
  675. return;
  676. for(c = sel->prev; c && !isvisible(c); c = c->prev);
  677. if(!c) {
  678. for(c = clients; c && c->next; c = c->next);
  679. for(; c && !isvisible(c); c = c->prev);
  680. }
  681. if(c) {
  682. focus(c);
  683. restack();
  684. }
  685. }
  686. Client *
  687. getclient(Window w) {
  688. Client *c;
  689. for(c = clients; c && c->win != w; c = c->next);
  690. return c;
  691. }
  692. unsigned long
  693. getcolor(const char *colstr) {
  694. Colormap cmap = DefaultColormap(dpy, screen);
  695. XColor color;
  696. if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
  697. eprint("error, cannot allocate color '%s'\n", colstr);
  698. return color.pixel;
  699. }
  700. long
  701. getstate(Window w) {
  702. int format, status;
  703. long result = -1;
  704. unsigned char *p = NULL;
  705. unsigned long n, extra;
  706. Atom real;
  707. status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
  708. &real, &format, &n, &extra, (unsigned char **)&p);
  709. if(status != Success)
  710. return -1;
  711. if(n != 0)
  712. result = *p;
  713. XFree(p);
  714. return result;
  715. }
  716. Bool
  717. gettextprop(Window w, Atom atom, char *text, unsigned int size) {
  718. char **list = NULL;
  719. int n;
  720. XTextProperty name;
  721. if(!text || size == 0)
  722. return False;
  723. text[0] = '\0';
  724. XGetTextProperty(dpy, w, &name, atom);
  725. if(!name.nitems)
  726. return False;
  727. if(name.encoding == XA_STRING)
  728. strncpy(text, (char *)name.value, size - 1);
  729. else {
  730. if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
  731. && n > 0 && *list)
  732. {
  733. strncpy(text, *list, size - 1);
  734. XFreeStringList(list);
  735. }
  736. }
  737. text[size - 1] = '\0';
  738. XFree(name.value);
  739. return True;
  740. }
  741. void
  742. grabbuttons(Client *c, Bool focused) {
  743. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  744. if(focused) {
  745. XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
  746. GrabModeAsync, GrabModeSync, None, None);
  747. XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
  748. GrabModeAsync, GrabModeSync, None, None);
  749. XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
  750. GrabModeAsync, GrabModeSync, None, None);
  751. XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
  752. GrabModeAsync, GrabModeSync, None, None);
  753. XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
  754. GrabModeAsync, GrabModeSync, None, None);
  755. XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
  756. GrabModeAsync, GrabModeSync, None, None);
  757. XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
  758. GrabModeAsync, GrabModeSync, None, None);
  759. XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
  760. GrabModeAsync, GrabModeSync, None, None);
  761. XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
  762. GrabModeAsync, GrabModeSync, None, None);
  763. XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
  764. GrabModeAsync, GrabModeSync, None, None);
  765. XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
  766. GrabModeAsync, GrabModeSync, None, None);
  767. XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
  768. GrabModeAsync, GrabModeSync, None, None);
  769. }
  770. else
  771. XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
  772. GrabModeAsync, GrabModeSync, None, None);
  773. }
  774. unsigned int
  775. idxoftag(const char *tag) {
  776. unsigned int i;
  777. for(i = 0; (i < NTAGS) && (tags[i] != tag); i++);
  778. return (i < NTAGS) ? i : 0;
  779. }
  780. void
  781. initfont(const char *fontstr) {
  782. char *def, **missing;
  783. int i, n;
  784. missing = NULL;
  785. if(dc.font.set)
  786. XFreeFontSet(dpy, dc.font.set);
  787. dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
  788. if(missing) {
  789. while(n--)
  790. fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
  791. XFreeStringList(missing);
  792. }
  793. if(dc.font.set) {
  794. XFontSetExtents *font_extents;
  795. XFontStruct **xfonts;
  796. char **font_names;
  797. dc.font.ascent = dc.font.descent = 0;
  798. font_extents = XExtentsOfFontSet(dc.font.set);
  799. n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
  800. for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
  801. if(dc.font.ascent < (*xfonts)->ascent)
  802. dc.font.ascent = (*xfonts)->ascent;
  803. if(dc.font.descent < (*xfonts)->descent)
  804. dc.font.descent = (*xfonts)->descent;
  805. xfonts++;
  806. }
  807. }
  808. else {
  809. if(dc.font.xfont)
  810. XFreeFont(dpy, dc.font.xfont);
  811. dc.font.xfont = NULL;
  812. if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
  813. && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
  814. eprint("error, cannot load font: '%s'\n", fontstr);
  815. dc.font.ascent = dc.font.xfont->ascent;
  816. dc.font.descent = dc.font.xfont->descent;
  817. }
  818. dc.font.height = dc.font.ascent + dc.font.descent;
  819. }
  820. Bool
  821. isarrange(void (*func)())
  822. {
  823. return func == layouts[ltidx].arrange;
  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. isvisible(Client *c) {
  848. unsigned int i;
  849. for(i = 0; i < NTAGS; i++)
  850. if(c->tags[i] && seltags[i])
  851. return True;
  852. return False;
  853. }
  854. void
  855. keypress(XEvent *e) {
  856. KEYS
  857. unsigned int len = sizeof keys / sizeof keys[0];
  858. unsigned int i;
  859. KeyCode code;
  860. KeySym keysym;
  861. XKeyEvent *ev;
  862. if(!e) { /* grabkeys */
  863. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  864. for(i = 0; i < len; i++) {
  865. code = XKeysymToKeycode(dpy, keys[i].keysym);
  866. XGrabKey(dpy, code, keys[i].mod, root, True,
  867. GrabModeAsync, GrabModeAsync);
  868. XGrabKey(dpy, code, keys[i].mod | LockMask, root, True,
  869. GrabModeAsync, GrabModeAsync);
  870. XGrabKey(dpy, code, keys[i].mod | numlockmask, root, True,
  871. GrabModeAsync, GrabModeAsync);
  872. XGrabKey(dpy, code, keys[i].mod | numlockmask | LockMask, root, True,
  873. GrabModeAsync, GrabModeAsync);
  874. }
  875. return;
  876. }
  877. ev = &e->xkey;
  878. keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
  879. for(i = 0; i < len; i++)
  880. if(keysym == keys[i].keysym
  881. && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state))
  882. {
  883. if(keys[i].func)
  884. keys[i].func(keys[i].arg);
  885. }
  886. }
  887. void
  888. killclient(const char *arg) {
  889. XEvent ev;
  890. if(!sel)
  891. return;
  892. if(isprotodel(sel)) {
  893. ev.type = ClientMessage;
  894. ev.xclient.window = sel->win;
  895. ev.xclient.message_type = wmatom[WMProtocols];
  896. ev.xclient.format = 32;
  897. ev.xclient.data.l[0] = wmatom[WMDelete];
  898. ev.xclient.data.l[1] = CurrentTime;
  899. XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
  900. }
  901. else
  902. XKillClient(dpy, sel->win);
  903. }
  904. void
  905. leavenotify(XEvent *e) {
  906. XCrossingEvent *ev = &e->xcrossing;
  907. if((ev->window == root) && !ev->same_screen) {
  908. selscreen = False;
  909. focus(NULL);
  910. }
  911. }
  912. void
  913. manage(Window w, XWindowAttributes *wa) {
  914. Client *c, *t = NULL;
  915. Window trans;
  916. Status rettrans;
  917. XWindowChanges wc;
  918. c = emallocz(sizeof(Client));
  919. c->tags = emallocz(sizeof seltags);
  920. c->win = w;
  921. c->x = wa->x;
  922. c->y = wa->y;
  923. c->w = wa->width;
  924. c->h = wa->height;
  925. c->oldborder = wa->border_width;
  926. if(c->w == sw && c->h == sh) {
  927. c->x = sx;
  928. c->y = sy;
  929. c->border = wa->border_width;
  930. }
  931. else {
  932. if(c->x + c->w + 2 * c->border > wax + waw)
  933. c->x = wax + waw - c->w - 2 * c->border;
  934. if(c->y + c->h + 2 * c->border > way + wah)
  935. c->y = way + wah - c->h - 2 * c->border;
  936. if(c->x < wax)
  937. c->x = wax;
  938. if(c->y < way)
  939. c->y = way;
  940. c->border = BORDERPX;
  941. }
  942. wc.border_width = c->border;
  943. XConfigureWindow(dpy, w, CWBorderWidth, &wc);
  944. XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
  945. configure(c); /* propagates border_width, if size doesn't change */
  946. updatesizehints(c);
  947. XSelectInput(dpy, w,
  948. StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
  949. grabbuttons(c, False);
  950. updatetitle(c);
  951. if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
  952. for(t = clients; t && t->win != trans; t = t->next);
  953. if(t)
  954. memcpy(c->tags, t->tags, sizeof seltags);
  955. applyrules(c);
  956. if(!c->isfloating)
  957. c->isfloating = (rettrans == Success) || c->isfixed;
  958. attach(c);
  959. attachstack(c);
  960. XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
  961. ban(c);
  962. XMapWindow(dpy, c->win);
  963. setclientstate(c, NormalState);
  964. arrange();
  965. }
  966. void
  967. mappingnotify(XEvent *e) {
  968. XMappingEvent *ev = &e->xmapping;
  969. XRefreshKeyboardMapping(ev);
  970. if(ev->request == MappingKeyboard)
  971. keypress(NULL);
  972. }
  973. void
  974. maprequest(XEvent *e) {
  975. static XWindowAttributes wa;
  976. XMapRequestEvent *ev = &e->xmaprequest;
  977. if(!XGetWindowAttributes(dpy, ev->window, &wa))
  978. return;
  979. if(wa.override_redirect)
  980. return;
  981. if(!getclient(ev->window))
  982. manage(ev->window, &wa);
  983. }
  984. void
  985. movemouse(Client *c) {
  986. int x1, y1, ocx, ocy, di, nx, ny;
  987. unsigned int dui;
  988. Window dummy;
  989. XEvent ev;
  990. ocx = nx = c->x;
  991. ocy = ny = c->y;
  992. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  993. None, cursor[CurMove], CurrentTime) != GrabSuccess)
  994. return;
  995. c->ismax = False;
  996. XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  997. for(;;) {
  998. XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
  999. switch (ev.type) {
  1000. case ButtonRelease:
  1001. XUngrabPointer(dpy, CurrentTime);
  1002. return;
  1003. case ConfigureRequest:
  1004. case Expose:
  1005. case MapRequest:
  1006. handler[ev.type](&ev);
  1007. break;
  1008. case MotionNotify:
  1009. XSync(dpy, False);
  1010. nx = ocx + (ev.xmotion.x - x1);
  1011. ny = ocy + (ev.xmotion.y - y1);
  1012. if(abs(wax + nx) < SNAP)
  1013. nx = wax;
  1014. else if(abs((wax + waw) - (nx + c->w + 2 * c->border)) < SNAP)
  1015. nx = wax + waw - c->w - 2 * c->border;
  1016. if(abs(way - ny) < SNAP)
  1017. ny = way;
  1018. else if(abs((way + wah) - (ny + c->h + 2 * c->border)) < SNAP)
  1019. ny = way + wah - c->h - 2 * c->border;
  1020. resize(c, nx, ny, c->w, c->h, False);
  1021. break;
  1022. }
  1023. }
  1024. }
  1025. Client *
  1026. nexttiled(Client *c) {
  1027. for(; c && (c->isfloating || !isvisible(c)); c = c->next);
  1028. return c;
  1029. }
  1030. void
  1031. propertynotify(XEvent *e) {
  1032. Client *c;
  1033. Window trans;
  1034. XPropertyEvent *ev = &e->xproperty;
  1035. if(ev->state == PropertyDelete)
  1036. return; /* ignore */
  1037. if((c = getclient(ev->window))) {
  1038. switch (ev->atom) {
  1039. default: break;
  1040. case XA_WM_TRANSIENT_FOR:
  1041. XGetTransientForHint(dpy, c->win, &trans);
  1042. if(!c->isfloating && (c->isfloating = (NULL != getclient(trans))))
  1043. arrange();
  1044. break;
  1045. case XA_WM_NORMAL_HINTS:
  1046. updatesizehints(c);
  1047. break;
  1048. }
  1049. if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
  1050. updatetitle(c);
  1051. if(c == sel)
  1052. drawbar();
  1053. }
  1054. }
  1055. }
  1056. void
  1057. quit(const char *arg) {
  1058. readin = running = False;
  1059. }
  1060. void
  1061. resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
  1062. XWindowChanges wc;
  1063. if(sizehints) {
  1064. /* set minimum possible */
  1065. if (w < 1)
  1066. w = 1;
  1067. if (h < 1)
  1068. h = 1;
  1069. /* temporarily remove base dimensions */
  1070. w -= c->basew;
  1071. h -= c->baseh;
  1072. /* adjust for aspect limits */
  1073. if (c->minay > 0 && c->maxay > 0 && c->minax > 0 && c->maxax > 0) {
  1074. if (w * c->maxay > h * c->maxax)
  1075. w = h * c->maxax / c->maxay;
  1076. else if (w * c->minay < h * c->minax)
  1077. h = w * c->minay / c->minax;
  1078. }
  1079. /* adjust for increment value */
  1080. if(c->incw)
  1081. w -= w % c->incw;
  1082. if(c->inch)
  1083. h -= h % c->inch;
  1084. /* restore base dimensions */
  1085. w += c->basew;
  1086. h += c->baseh;
  1087. if(c->minw > 0 && w < c->minw)
  1088. w = c->minw;
  1089. if(c->minh > 0 && h < c->minh)
  1090. h = c->minh;
  1091. if(c->maxw > 0 && w > c->maxw)
  1092. w = c->maxw;
  1093. if(c->maxh > 0 && h > c->maxh)
  1094. h = c->maxh;
  1095. }
  1096. if(w <= 0 || h <= 0)
  1097. return;
  1098. /* offscreen appearance fixes */
  1099. if(x > sw)
  1100. x = sw - w - 2 * c->border;
  1101. if(y > sh)
  1102. y = sh - h - 2 * c->border;
  1103. if(x + w + 2 * c->border < sx)
  1104. x = sx;
  1105. if(y + h + 2 * c->border < sy)
  1106. y = sy;
  1107. if(c->x != x || c->y != y || c->w != w || c->h != h) {
  1108. c->x = wc.x = x;
  1109. c->y = wc.y = y;
  1110. c->w = wc.width = w;
  1111. c->h = wc.height = h;
  1112. wc.border_width = c->border;
  1113. XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
  1114. configure(c);
  1115. XSync(dpy, False);
  1116. }
  1117. }
  1118. void
  1119. resizemouse(Client *c) {
  1120. int ocx, ocy;
  1121. int nw, nh;
  1122. XEvent ev;
  1123. ocx = c->x;
  1124. ocy = c->y;
  1125. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  1126. None, cursor[CurResize], CurrentTime) != GrabSuccess)
  1127. return;
  1128. c->ismax = False;
  1129. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->border - 1, c->h + c->border - 1);
  1130. for(;;) {
  1131. XMaskEvent(dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask , &ev);
  1132. switch(ev.type) {
  1133. case ButtonRelease:
  1134. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
  1135. c->w + c->border - 1, c->h + c->border - 1);
  1136. XUngrabPointer(dpy, CurrentTime);
  1137. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1138. return;
  1139. case ConfigureRequest:
  1140. case Expose:
  1141. case MapRequest:
  1142. handler[ev.type](&ev);
  1143. break;
  1144. case MotionNotify:
  1145. XSync(dpy, False);
  1146. if((nw = ev.xmotion.x - ocx - 2 * c->border + 1) <= 0)
  1147. nw = 1;
  1148. if((nh = ev.xmotion.y - ocy - 2 * c->border + 1) <= 0)
  1149. nh = 1;
  1150. resize(c, c->x, c->y, nw, nh, True);
  1151. break;
  1152. }
  1153. }
  1154. }
  1155. void
  1156. restack(void) {
  1157. Client *c;
  1158. XEvent ev;
  1159. XWindowChanges wc;
  1160. drawbar();
  1161. if(!sel)
  1162. return;
  1163. if(sel->isfloating || isarrange(floating))
  1164. XRaiseWindow(dpy, sel->win);
  1165. if(!isarrange(floating)) {
  1166. wc.stack_mode = Below;
  1167. wc.sibling = barwin;
  1168. if(!sel->isfloating) {
  1169. XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
  1170. wc.sibling = sel->win;
  1171. }
  1172. for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
  1173. if(c == sel)
  1174. continue;
  1175. XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
  1176. wc.sibling = c->win;
  1177. }
  1178. }
  1179. XSync(dpy, False);
  1180. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1181. }
  1182. void
  1183. run(void) {
  1184. char *p;
  1185. int r, xfd;
  1186. fd_set rd;
  1187. XEvent ev;
  1188. /* main event loop, also reads status text from stdin */
  1189. XSync(dpy, False);
  1190. xfd = ConnectionNumber(dpy);
  1191. readin = True;
  1192. while(running) {
  1193. FD_ZERO(&rd);
  1194. if(readin)
  1195. FD_SET(STDIN_FILENO, &rd);
  1196. FD_SET(xfd, &rd);
  1197. if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
  1198. if(errno == EINTR)
  1199. continue;
  1200. eprint("select failed\n");
  1201. }
  1202. if(FD_ISSET(STDIN_FILENO, &rd)) {
  1203. switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
  1204. case -1:
  1205. strncpy(stext, strerror(errno), sizeof stext - 1);
  1206. stext[sizeof stext - 1] = '\0';
  1207. readin = False;
  1208. break;
  1209. case 0:
  1210. strncpy(stext, "EOF", 4);
  1211. readin = False;
  1212. break;
  1213. default:
  1214. for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
  1215. for(; p >= stext && *p != '\n'; --p);
  1216. if(p > stext)
  1217. strncpy(stext, p + 1, sizeof stext);
  1218. }
  1219. drawbar();
  1220. }
  1221. while(XPending(dpy)) {
  1222. XNextEvent(dpy, &ev);
  1223. if(handler[ev.type])
  1224. (handler[ev.type])(&ev); /* call handler */
  1225. }
  1226. }
  1227. }
  1228. void
  1229. scan(void) {
  1230. unsigned int i, num;
  1231. Window *wins, d1, d2;
  1232. XWindowAttributes wa;
  1233. wins = NULL;
  1234. if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
  1235. for(i = 0; i < num; i++) {
  1236. if(!XGetWindowAttributes(dpy, wins[i], &wa)
  1237. || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
  1238. continue;
  1239. if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
  1240. manage(wins[i], &wa);
  1241. }
  1242. for(i = 0; i < num; i++) { /* now the transients */
  1243. if(!XGetWindowAttributes(dpy, wins[i], &wa))
  1244. continue;
  1245. if(XGetTransientForHint(dpy, wins[i], &d1)
  1246. && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
  1247. manage(wins[i], &wa);
  1248. }
  1249. }
  1250. if(wins)
  1251. XFree(wins);
  1252. }
  1253. void
  1254. setclientstate(Client *c, long state) {
  1255. long data[] = {state, None};
  1256. XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
  1257. PropModeReplace, (unsigned char *)data, 2);
  1258. }
  1259. void
  1260. setlayout(const char *arg) {
  1261. unsigned int i;
  1262. if(!arg) {
  1263. if(++ltidx == nlayouts)
  1264. ltidx = 0;;
  1265. }
  1266. else {
  1267. for(i = 0; i < nlayouts; i++)
  1268. if(!strcmp(arg, layouts[i].symbol))
  1269. break;
  1270. if(i == nlayouts)
  1271. return;
  1272. ltidx = i;
  1273. }
  1274. if(sel)
  1275. arrange();
  1276. else
  1277. drawbar();
  1278. }
  1279. void
  1280. setmwfact(const char *arg) {
  1281. double delta;
  1282. if(!(ISTILE))
  1283. return;
  1284. /* arg handling, manipulate mwfact */
  1285. if(arg == NULL)
  1286. mwfact = MWFACT;
  1287. else if(1 == sscanf(arg, "%lf", &delta)) {
  1288. if(arg[0] == '+' || arg[0] == '-')
  1289. mwfact += delta;
  1290. else
  1291. mwfact = delta;
  1292. if(mwfact < 0.1)
  1293. mwfact = 0.1;
  1294. else if(mwfact > 0.9)
  1295. mwfact = 0.9;
  1296. }
  1297. arrange();
  1298. }
  1299. void
  1300. setup(void) {
  1301. int d;
  1302. unsigned int i, j, mask;
  1303. Window w;
  1304. XModifierKeymap *modmap;
  1305. XSetWindowAttributes wa;
  1306. /* init atoms */
  1307. wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
  1308. wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
  1309. wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
  1310. wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
  1311. netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
  1312. netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
  1313. XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
  1314. PropModeReplace, (unsigned char *) netatom, NetLast);
  1315. /* init cursors */
  1316. cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
  1317. cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
  1318. cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
  1319. /* init geometry */
  1320. sx = sy = 0;
  1321. sw = DisplayWidth(dpy, screen);
  1322. sh = DisplayHeight(dpy, screen);
  1323. /* init modifier map */
  1324. modmap = XGetModifierMapping(dpy);
  1325. for(i = 0; i < 8; i++)
  1326. for(j = 0; j < modmap->max_keypermod; j++) {
  1327. if(modmap->modifiermap[i * modmap->max_keypermod + j]
  1328. == XKeysymToKeycode(dpy, XK_Num_Lock))
  1329. numlockmask = (1 << i);
  1330. }
  1331. XFreeModifiermap(modmap);
  1332. /* select for events */
  1333. wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
  1334. | EnterWindowMask | LeaveWindowMask | StructureNotifyMask;
  1335. wa.cursor = cursor[CurNormal];
  1336. XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
  1337. XSelectInput(dpy, root, wa.event_mask);
  1338. /* grab keys */
  1339. keypress(NULL);
  1340. /* init tags */
  1341. compileregs();
  1342. /* init appearance */
  1343. dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
  1344. dc.norm[ColBG] = getcolor(NORMBGCOLOR);
  1345. dc.norm[ColFG] = getcolor(NORMFGCOLOR);
  1346. dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
  1347. dc.sel[ColBG] = getcolor(SELBGCOLOR);
  1348. dc.sel[ColFG] = getcolor(SELFGCOLOR);
  1349. initfont(FONT);
  1350. dc.h = bh = dc.font.height + 2;
  1351. /* init layouts */
  1352. mwfact = MWFACT;
  1353. nlayouts = sizeof layouts / sizeof layouts[0];
  1354. for(blw = i = 0; i < nlayouts; i++) {
  1355. j = textw(layouts[i].symbol);
  1356. if(j > blw)
  1357. blw = j;
  1358. }
  1359. /* init bar */
  1360. bpos = BARPOS;
  1361. wa.override_redirect = 1;
  1362. wa.background_pixmap = ParentRelative;
  1363. wa.event_mask = ButtonPressMask | ExposureMask;
  1364. barwin = XCreateWindow(dpy, root, sx, sy, sw, bh, 0,
  1365. DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
  1366. CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
  1367. XDefineCursor(dpy, barwin, cursor[CurNormal]);
  1368. updatebarpos();
  1369. XMapRaised(dpy, barwin);
  1370. strcpy(stext, "dwm-"VERSION);
  1371. dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
  1372. dc.gc = XCreateGC(dpy, root, 0, 0);
  1373. XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
  1374. if(!dc.font.set)
  1375. XSetFont(dpy, dc.gc, dc.font.xfont->fid);
  1376. /* multihead support */
  1377. selscreen = XQueryPointer(dpy, root, &w, &w, &d, &d, &d, &d, &mask);
  1378. }
  1379. void
  1380. spawn(const char *arg) {
  1381. static char *shell = NULL;
  1382. if(!shell && !(shell = getenv("SHELL")))
  1383. shell = "/bin/sh";
  1384. if(!arg)
  1385. return;
  1386. /* The double-fork construct avoids zombie processes and keeps the code
  1387. * clean from stupid signal handlers. */
  1388. if(fork() == 0) {
  1389. if(fork() == 0) {
  1390. if(dpy)
  1391. close(ConnectionNumber(dpy));
  1392. setsid();
  1393. execl(shell, shell, "-c", arg, (char *)NULL);
  1394. fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg);
  1395. perror(" failed");
  1396. }
  1397. exit(0);
  1398. }
  1399. wait(0);
  1400. }
  1401. void
  1402. tag(const char *arg) {
  1403. unsigned int i;
  1404. if(!sel)
  1405. return;
  1406. for(i = 0; i < NTAGS; i++)
  1407. sel->tags[i] = (NULL == arg);
  1408. sel->tags[idxoftag(arg)] = True;
  1409. arrange();
  1410. }
  1411. unsigned int
  1412. textnw(const char *text, unsigned int len) {
  1413. XRectangle r;
  1414. if(dc.font.set) {
  1415. XmbTextExtents(dc.font.set, text, len, NULL, &r);
  1416. return r.width;
  1417. }
  1418. return XTextWidth(dc.font.xfont, text, len);
  1419. }
  1420. unsigned int
  1421. textw(const char *text) {
  1422. return textnw(text, strlen(text)) + dc.font.height;
  1423. }
  1424. void
  1425. tile(void) {
  1426. unsigned int i, n, nx, ny, nw, nh, mw, th;
  1427. Client *c, *mc;
  1428. for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
  1429. n++;
  1430. /* window geoms */
  1431. mw = (n == 1) ? waw : mwfact * waw;
  1432. th = (n > 1) ? wah / (n - 1) : 0;
  1433. if(n > 1 && th < bh)
  1434. th = wah;
  1435. nx = wax;
  1436. ny = way;
  1437. nw = 0; /* gcc stupidity requires this */
  1438. for(i = 0, c = mc = nexttiled(clients); c; c = nexttiled(c->next), i++) {
  1439. c->ismax = False;
  1440. if(i == 0) { /* master */
  1441. nw = mw - 2 * c->border;
  1442. nh = wah - 2 * c->border;
  1443. }
  1444. else { /* tile window */
  1445. if(i == 1) {
  1446. ny = way;
  1447. nx += mc->w + 2 * mc->border;
  1448. nw = waw - nx - 2 * c->border;
  1449. }
  1450. if(i + 1 == n) /* remainder */
  1451. nh = (way + wah) - ny - 2 * c->border;
  1452. else
  1453. nh = th - 2 * c->border;
  1454. }
  1455. resize(c, nx, ny, nw, nh, True);
  1456. if((c->h < bh) || (c->h > nh) || (c->w < bh) || (c->w > nw))
  1457. /* client doesn't accept size constraints */
  1458. resize(c, nx, ny, nw, nh, False);
  1459. if(n > 1 && th != wah)
  1460. ny = c->y + c->h + 2 * c->border;
  1461. }
  1462. }
  1463. void
  1464. togglebar(const char *arg) {
  1465. if(bpos == BarOff)
  1466. bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
  1467. else
  1468. bpos = BarOff;
  1469. updatebarpos();
  1470. arrange();
  1471. }
  1472. void
  1473. togglefloating(const char *arg) {
  1474. if(!sel)
  1475. return;
  1476. sel->isfloating = !sel->isfloating;
  1477. if(sel->isfloating)
  1478. resize(sel, sel->x, sel->y, sel->w, sel->h, True);
  1479. arrange();
  1480. }
  1481. void
  1482. togglemax(const char *arg) {
  1483. XEvent ev;
  1484. if(!sel || sel->isfixed)
  1485. return;
  1486. if((sel->ismax = !sel->ismax)) {
  1487. if(isarrange(floating) || sel->isfloating)
  1488. sel->wasfloating = True;
  1489. else {
  1490. togglefloating(NULL);
  1491. sel->wasfloating = False;
  1492. }
  1493. sel->rx = sel->x;
  1494. sel->ry = sel->y;
  1495. sel->rw = sel->w;
  1496. sel->rh = sel->h;
  1497. resize(sel, wax, way, waw - 2 * sel->border, wah - 2 * sel->border, True);
  1498. }
  1499. else {
  1500. resize(sel, sel->rx, sel->ry, sel->rw, sel->rh, True);
  1501. if(!sel->wasfloating)
  1502. togglefloating(NULL);
  1503. }
  1504. drawbar();
  1505. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1506. }
  1507. void
  1508. toggletag(const char *arg) {
  1509. unsigned int i, j;
  1510. if(!sel)
  1511. return;
  1512. i = idxoftag(arg);
  1513. sel->tags[i] = !sel->tags[i];
  1514. for(j = 0; j < NTAGS && !sel->tags[j]; j++);
  1515. if(j == NTAGS)
  1516. sel->tags[i] = True; /* at least one tag must be enabled */
  1517. arrange();
  1518. }
  1519. void
  1520. toggleview(const char *arg) {
  1521. unsigned int i, j;
  1522. i = idxoftag(arg);
  1523. seltags[i] = !seltags[i];
  1524. for(j = 0; j < NTAGS && !seltags[j]; j++);
  1525. if(j == NTAGS)
  1526. seltags[i] = True; /* at least one tag must be viewed */
  1527. arrange();
  1528. }
  1529. void
  1530. unban(Client *c) {
  1531. if(!c->isbanned)
  1532. return;
  1533. XMoveWindow(dpy, c->win, c->x, c->y);
  1534. c->isbanned = False;
  1535. }
  1536. void
  1537. unmanage(Client *c) {
  1538. XWindowChanges wc;
  1539. wc.border_width = c->oldborder;
  1540. /* The server grab construct avoids race conditions. */
  1541. XGrabServer(dpy);
  1542. XSetErrorHandler(xerrordummy);
  1543. XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
  1544. detach(c);
  1545. detachstack(c);
  1546. if(sel == c)
  1547. focus(NULL);
  1548. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  1549. setclientstate(c, WithdrawnState);
  1550. free(c->tags);
  1551. free(c);
  1552. XSync(dpy, False);
  1553. XSetErrorHandler(xerror);
  1554. XUngrabServer(dpy);
  1555. arrange();
  1556. }
  1557. void
  1558. unmapnotify(XEvent *e) {
  1559. Client *c;
  1560. XUnmapEvent *ev = &e->xunmap;
  1561. if((c = getclient(ev->window)))
  1562. unmanage(c);
  1563. }
  1564. void
  1565. updatebarpos(void) {
  1566. XEvent ev;
  1567. wax = sx;
  1568. way = sy;
  1569. wah = sh;
  1570. waw = sw;
  1571. switch(bpos) {
  1572. default:
  1573. wah -= bh;
  1574. way += bh;
  1575. XMoveWindow(dpy, barwin, sx, sy);
  1576. break;
  1577. case BarBot:
  1578. wah -= bh;
  1579. XMoveWindow(dpy, barwin, sx, sy + wah);
  1580. break;
  1581. case BarOff:
  1582. XMoveWindow(dpy, barwin, sx, sy - bh);
  1583. break;
  1584. }
  1585. XSync(dpy, False);
  1586. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1587. }
  1588. void
  1589. updatesizehints(Client *c) {
  1590. long msize;
  1591. XSizeHints size;
  1592. if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
  1593. size.flags = PSize;
  1594. c->flags = size.flags;
  1595. if(c->flags & PBaseSize) {
  1596. c->basew = size.base_width;
  1597. c->baseh = size.base_height;
  1598. }
  1599. else if(c->flags & PMinSize) {
  1600. c->basew = size.min_width;
  1601. c->baseh = size.min_height;
  1602. }
  1603. else
  1604. c->basew = c->baseh = 0;
  1605. if(c->flags & PResizeInc) {
  1606. c->incw = size.width_inc;
  1607. c->inch = size.height_inc;
  1608. }
  1609. else
  1610. c->incw = c->inch = 0;
  1611. if(c->flags & PMaxSize) {
  1612. c->maxw = size.max_width;
  1613. c->maxh = size.max_height;
  1614. }
  1615. else
  1616. c->maxw = c->maxh = 0;
  1617. if(c->flags & PMinSize) {
  1618. c->minw = size.min_width;
  1619. c->minh = size.min_height;
  1620. }
  1621. else if(c->flags & PBaseSize) {
  1622. c->minw = size.base_width;
  1623. c->minh = size.base_height;
  1624. }
  1625. else
  1626. c->minw = c->minh = 0;
  1627. if(c->flags & PAspect) {
  1628. c->minax = size.min_aspect.x;
  1629. c->maxax = size.max_aspect.x;
  1630. c->minay = size.min_aspect.y;
  1631. c->maxay = size.max_aspect.y;
  1632. }
  1633. else
  1634. c->minax = c->maxax = c->minay = c->maxay = 0;
  1635. c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
  1636. && c->maxw == c->minw && c->maxh == c->minh);
  1637. }
  1638. void
  1639. updatetitle(Client *c) {
  1640. if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
  1641. gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
  1642. }
  1643. /* There's no way to check accesses to destroyed windows, thus those cases are
  1644. * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
  1645. * default error handler, which may call exit. */
  1646. int
  1647. xerror(Display *dpy, XErrorEvent *ee) {
  1648. if(ee->error_code == BadWindow
  1649. || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
  1650. || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
  1651. || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
  1652. || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
  1653. || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
  1654. || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
  1655. || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
  1656. return 0;
  1657. fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
  1658. ee->request_code, ee->error_code);
  1659. return xerrorxlib(dpy, ee); /* may call exit */
  1660. }
  1661. int
  1662. xerrordummy(Display *dsply, XErrorEvent *ee) {
  1663. return 0;
  1664. }
  1665. /* Startup Error handler to check if another window manager
  1666. * is already running. */
  1667. int
  1668. xerrorstart(Display *dsply, XErrorEvent *ee) {
  1669. otherwm = True;
  1670. return -1;
  1671. }
  1672. void
  1673. view(const char *arg) {
  1674. unsigned int i;
  1675. memcpy(prevtags, seltags, sizeof seltags);
  1676. for(i = 0; i < NTAGS; i++)
  1677. seltags[i] = arg == NULL;
  1678. seltags[idxoftag(arg)] = True;
  1679. arrange();
  1680. }
  1681. void
  1682. viewprevtag(const char *arg) {
  1683. static Bool tmptags[sizeof tags / sizeof tags[0]];
  1684. memcpy(tmptags, seltags, sizeof seltags);
  1685. memcpy(seltags, prevtags, sizeof seltags);
  1686. memcpy(prevtags, tmptags, sizeof seltags);
  1687. arrange();
  1688. }
  1689. void
  1690. zoom(const char *arg) {
  1691. Client *c;
  1692. if(!sel || !(ISTILE) || sel->isfloating)
  1693. return;
  1694. if((c = sel) == nexttiled(clients))
  1695. if(!(c = nexttiled(c->next)))
  1696. return;
  1697. detach(c);
  1698. attach(c);
  1699. focus(c);
  1700. arrange();
  1701. }
  1702. int
  1703. main(int argc, char *argv[]) {
  1704. if(argc == 2 && !strcmp("-v", argv[1]))
  1705. eprint("dwm-"VERSION", © 2006-2007 A. R. Garbe, S. van Dijk, J. Salmi, P. Hruby, S. Nagy\n");
  1706. else if(argc != 1)
  1707. eprint("usage: dwm [-v]\n");
  1708. setlocale(LC_CTYPE, "");
  1709. if(!(dpy = XOpenDisplay(0)))
  1710. eprint("dwm: cannot open display\n");
  1711. screen = DefaultScreen(dpy);
  1712. root = RootWindow(dpy, screen);
  1713. checkotherwm();
  1714. setup();
  1715. drawbar();
  1716. scan();
  1717. run();
  1718. cleanup();
  1719. XCloseDisplay(dpy);
  1720. return 0;
  1721. }