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