Configuration file for DWM on MacBook Air
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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. #ifdef XINERAMA
  43. #include <X11/extensions/Xinerama.h>
  44. #endif
  45. /* macros */
  46. #define MAX(a, b) ((a) > (b) ? (a) : (b))
  47. #define MIN(a, b) ((a) < (b) ? (a) : (b))
  48. #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
  49. #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask))
  50. #define LENGTH(x) (sizeof x / sizeof x[0])
  51. #define MAXTAGLEN 16
  52. #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
  53. #define TAGMASK ((int)((1LL << LENGTH(tags)) - 1))
  54. /* enums */
  55. enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
  56. enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
  57. enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
  58. enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
  59. /* typedefs */
  60. typedef unsigned int uint;
  61. typedef unsigned long ulong;
  62. typedef struct Client Client;
  63. struct Client {
  64. char name[256];
  65. int x, y, w, h;
  66. int basew, baseh, incw, inch, maxw, maxh, minw, minh;
  67. int minax, maxax, minay, maxay;
  68. long flags;
  69. int bw, oldbw;
  70. Bool isbanned, isfixed, isfloating, isurgent;
  71. uint tags;
  72. Client *next;
  73. Client *prev;
  74. Client *snext;
  75. Window win;
  76. };
  77. typedef struct {
  78. int x, y, w, h;
  79. ulong norm[ColLast];
  80. ulong sel[ColLast];
  81. Drawable drawable;
  82. GC gc;
  83. struct {
  84. int ascent;
  85. int descent;
  86. int height;
  87. XFontSet set;
  88. XFontStruct *xfont;
  89. } font;
  90. } DC; /* draw context */
  91. typedef struct {
  92. uint mod;
  93. KeySym keysym;
  94. void (*func)(const void *arg);
  95. const void *arg;
  96. } Key;
  97. typedef struct {
  98. const char *symbol;
  99. void (*arrange)(void);
  100. void (*updategeom)(void);
  101. } Layout;
  102. typedef struct {
  103. const char *class;
  104. const char *instance;
  105. const char *title;
  106. uint tags;
  107. Bool isfloating;
  108. } Rule;
  109. /* function declarations */
  110. void applyrules(Client *c);
  111. void arrange(void);
  112. void attach(Client *c);
  113. void attachstack(Client *c);
  114. void ban(Client *c);
  115. void buttonpress(XEvent *e);
  116. void checkotherwm(void);
  117. void cleanup(void);
  118. void configure(Client *c);
  119. void configurenotify(XEvent *e);
  120. void configurerequest(XEvent *e);
  121. void destroynotify(XEvent *e);
  122. void detach(Client *c);
  123. void detachstack(Client *c);
  124. void drawbar(void);
  125. void drawsquare(Bool filled, Bool empty, Bool invert, ulong col[ColLast]);
  126. void drawtext(const char *text, ulong col[ColLast], Bool invert);
  127. void *emallocz(uint size);
  128. void enternotify(XEvent *e);
  129. void eprint(const char *errstr, ...);
  130. void expose(XEvent *e);
  131. void focus(Client *c);
  132. void focusin(XEvent *e);
  133. void focusnext(const void *arg);
  134. void focusprev(const void *arg);
  135. Client *getclient(Window w);
  136. ulong getcolor(const char *colstr);
  137. long getstate(Window w);
  138. Bool gettextprop(Window w, Atom atom, char *text, uint size);
  139. void grabbuttons(Client *c, Bool focused);
  140. void grabkeys(void);
  141. void initfont(const char *fontstr);
  142. Bool isoccupied(uint t);
  143. Bool isprotodel(Client *c);
  144. Bool isurgent(uint t);
  145. Bool isvisible(Client *c);
  146. void keypress(XEvent *e);
  147. void killclient(const void *arg);
  148. void manage(Window w, XWindowAttributes *wa);
  149. void mappingnotify(XEvent *e);
  150. void maprequest(XEvent *e);
  151. void movemouse(Client *c);
  152. Client *nexttiled(Client *c);
  153. void propertynotify(XEvent *e);
  154. void quit(const void *arg);
  155. void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
  156. void resizemouse(Client *c);
  157. void restack(void);
  158. void run(void);
  159. void scan(void);
  160. void setclientstate(Client *c, long state);
  161. void setmfact(const void *arg);
  162. void setup(void);
  163. void spawn(const void *arg);
  164. void tag(const void *arg);
  165. uint textnw(const char *text, uint len);
  166. uint textw(const char *text);
  167. void tile(void);
  168. void tileresize(Client *c, int x, int y, int w, int h);
  169. void togglebar(const void *arg);
  170. void togglefloating(const void *arg);
  171. void togglelayout(const void *arg);
  172. void toggletag(const void *arg);
  173. void toggleview(const void *arg);
  174. void unban(Client *c);
  175. void unmanage(Client *c);
  176. void unmapnotify(XEvent *e);
  177. void updatebar(void);
  178. void updategeom(void);
  179. void updatesizehints(Client *c);
  180. void updatetilegeom(void);
  181. void updatetitle(Client *c);
  182. void updatewmhints(Client *c);
  183. void view(const void *arg);
  184. void viewprevtag(const void *arg);
  185. int xerror(Display *dpy, XErrorEvent *ee);
  186. int xerrordummy(Display *dpy, XErrorEvent *ee);
  187. int xerrorstart(Display *dpy, XErrorEvent *ee);
  188. void zoom(const void *arg);
  189. /* variables */
  190. char stext[256];
  191. int screen, sx, sy, sw, sh;
  192. int bx, by, bw, bh, blw, wx, wy, ww, wh;
  193. int mx, my, mw, mh, tx, ty, tw, th;
  194. uint seltags = 0;
  195. int (*xerrorxlib)(Display *, XErrorEvent *);
  196. uint numlockmask = 0;
  197. void (*handler[LASTEvent]) (XEvent *) = {
  198. [ButtonPress] = buttonpress,
  199. [ConfigureRequest] = configurerequest,
  200. [ConfigureNotify] = configurenotify,
  201. [DestroyNotify] = destroynotify,
  202. [EnterNotify] = enternotify,
  203. [Expose] = expose,
  204. [FocusIn] = focusin,
  205. [KeyPress] = keypress,
  206. [MappingNotify] = mappingnotify,
  207. [MapRequest] = maprequest,
  208. [PropertyNotify] = propertynotify,
  209. [UnmapNotify] = unmapnotify
  210. };
  211. Atom wmatom[WMLast], netatom[NetLast];
  212. Bool otherwm, readin;
  213. Bool running = True;
  214. uint tagset[] = {1, 1}; /* after start, first tag is selected */
  215. Client *clients = NULL;
  216. Client *sel = NULL;
  217. Client *stack = NULL;
  218. Cursor cursor[CurLast];
  219. Display *dpy;
  220. DC dc = {0};
  221. Layout layouts[];
  222. Layout *lt = layouts;
  223. Window root, barwin;
  224. /* configuration, allows nested code to access above variables */
  225. #include "config.h"
  226. /* compile-time check if all tags fit into an uint bit array. */
  227. struct NumTags { char limitexceeded[sizeof(uint) * 8 < LENGTH(tags) ? -1 : 1]; };
  228. /* function implementations */
  229. void
  230. applyrules(Client *c) {
  231. uint i;
  232. Rule *r;
  233. XClassHint ch = { 0 };
  234. /* rule matching */
  235. XGetClassHint(dpy, c->win, &ch);
  236. for(i = 0; i < LENGTH(rules); i++) {
  237. r = &rules[i];
  238. if((!r->title || strstr(c->name, r->title))
  239. && (!r->class || (ch.res_class && strstr(ch.res_class, r->class)))
  240. && (!r->instance || (ch.res_name && strstr(ch.res_name, r->instance)))) {
  241. c->isfloating = r->isfloating;
  242. c->tags |= r->tags & TAGMASK;
  243. }
  244. }
  245. if(ch.res_class)
  246. XFree(ch.res_class);
  247. if(ch.res_name)
  248. XFree(ch.res_name);
  249. if(!c->tags)
  250. c->tags = tagset[seltags];
  251. }
  252. void
  253. arrange(void) {
  254. Client *c;
  255. for(c = clients; c; c = c->next)
  256. if(isvisible(c)) {
  257. unban(c);
  258. if(!lt->arrange || c->isfloating)
  259. resize(c, c->x, c->y, c->w, c->h, True);
  260. }
  261. else
  262. ban(c);
  263. focus(NULL);
  264. if(lt->arrange)
  265. lt->arrange();
  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. uint i, x, mask;
  290. Client *c;
  291. XButtonPressedEvent *ev = &e->xbutton;
  292. if(ev->window == barwin) {
  293. x = 0;
  294. for(i = 0; i < LENGTH(tags); i++) {
  295. x += textw(tags[i]);
  296. if(ev->x < x) {
  297. mask = 1 << i;
  298. if(ev->button == Button1) {
  299. if(ev->state & MODKEY)
  300. tag(&mask);
  301. else
  302. view(&mask);
  303. }
  304. else if(ev->button == Button3) {
  305. if(ev->state & MODKEY)
  306. toggletag(&mask);
  307. else
  308. toggleview(&mask);
  309. }
  310. return;
  311. }
  312. }
  313. if((ev->x < x + blw) && ev->button == Button1)
  314. togglelayout(NULL);
  315. }
  316. else if((c = getclient(ev->window))) {
  317. focus(c);
  318. if(CLEANMASK(ev->state) != MODKEY)
  319. return;
  320. if(ev->button == Button1) {
  321. restack();
  322. movemouse(c);
  323. }
  324. else if(ev->button == Button2)
  325. togglefloating(NULL);
  326. else if(ev->button == Button3 && !c->isfixed) {
  327. restack();
  328. resizemouse(c);
  329. }
  330. }
  331. }
  332. void
  333. checkotherwm(void) {
  334. otherwm = False;
  335. XSetErrorHandler(xerrorstart);
  336. /* this causes an error if some other window manager is running */
  337. XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
  338. XSync(dpy, False);
  339. if(otherwm)
  340. eprint("dwm: another window manager is already running\n");
  341. XSync(dpy, False);
  342. XSetErrorHandler(NULL);
  343. xerrorxlib = XSetErrorHandler(xerror);
  344. XSync(dpy, False);
  345. }
  346. void
  347. cleanup(void) {
  348. close(STDIN_FILENO);
  349. while(stack) {
  350. unban(stack);
  351. unmanage(stack);
  352. }
  353. if(dc.font.set)
  354. XFreeFontSet(dpy, dc.font.set);
  355. else
  356. XFreeFont(dpy, dc.font.xfont);
  357. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  358. XFreePixmap(dpy, dc.drawable);
  359. XFreeGC(dpy, dc.gc);
  360. XFreeCursor(dpy, cursor[CurNormal]);
  361. XFreeCursor(dpy, cursor[CurResize]);
  362. XFreeCursor(dpy, cursor[CurMove]);
  363. XDestroyWindow(dpy, barwin);
  364. XSync(dpy, False);
  365. XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
  366. }
  367. void
  368. configure(Client *c) {
  369. XConfigureEvent ce;
  370. ce.type = ConfigureNotify;
  371. ce.display = dpy;
  372. ce.event = c->win;
  373. ce.window = c->win;
  374. ce.x = c->x;
  375. ce.y = c->y;
  376. ce.width = c->w;
  377. ce.height = c->h;
  378. ce.border_width = c->bw;
  379. ce.above = None;
  380. ce.override_redirect = False;
  381. XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
  382. }
  383. void
  384. configurenotify(XEvent *e) {
  385. XConfigureEvent *ev = &e->xconfigure;
  386. if(ev->window == root && (ev->width != sw || ev->height != sh)) {
  387. sw = ev->width;
  388. sh = ev->height;
  389. updategeom();
  390. updatebar();
  391. arrange();
  392. }
  393. }
  394. void
  395. configurerequest(XEvent *e) {
  396. Client *c;
  397. XConfigureRequestEvent *ev = &e->xconfigurerequest;
  398. XWindowChanges wc;
  399. if((c = getclient(ev->window))) {
  400. if(ev->value_mask & CWBorderWidth)
  401. c->bw = ev->border_width;
  402. if(c->isfixed || c->isfloating || !lt->arrange) {
  403. if(ev->value_mask & CWX)
  404. c->x = sx + ev->x;
  405. if(ev->value_mask & CWY)
  406. c->y = sy + ev->y;
  407. if(ev->value_mask & CWWidth)
  408. c->w = ev->width;
  409. if(ev->value_mask & CWHeight)
  410. c->h = ev->height;
  411. if((c->x - sx + c->w) > sw && c->isfloating)
  412. c->x = sx + (sw / 2 - c->w / 2); /* center in x direction */
  413. if((c->y - sy + c->h) > sh && c->isfloating)
  414. c->y = sy + (sh / 2 - c->h / 2); /* center in y direction */
  415. if((ev->value_mask & (CWX|CWY))
  416. && !(ev->value_mask & (CWWidth|CWHeight)))
  417. configure(c);
  418. if(isvisible(c))
  419. XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
  420. }
  421. else
  422. configure(c);
  423. }
  424. else {
  425. wc.x = ev->x;
  426. wc.y = ev->y;
  427. wc.width = ev->width;
  428. wc.height = ev->height;
  429. wc.border_width = ev->border_width;
  430. wc.sibling = ev->above;
  431. wc.stack_mode = ev->detail;
  432. XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
  433. }
  434. XSync(dpy, False);
  435. }
  436. void
  437. destroynotify(XEvent *e) {
  438. Client *c;
  439. XDestroyWindowEvent *ev = &e->xdestroywindow;
  440. if((c = getclient(ev->window)))
  441. unmanage(c);
  442. }
  443. void
  444. detach(Client *c) {
  445. if(c->prev)
  446. c->prev->next = c->next;
  447. if(c->next)
  448. c->next->prev = c->prev;
  449. if(c == clients)
  450. clients = c->next;
  451. c->next = c->prev = NULL;
  452. }
  453. void
  454. detachstack(Client *c) {
  455. Client **tc;
  456. for(tc = &stack; *tc && *tc != c; tc = &(*tc)->snext);
  457. *tc = c->snext;
  458. }
  459. void
  460. drawbar(void) {
  461. int i, x;
  462. Client *c;
  463. dc.x = 0;
  464. for(c = stack; c && !isvisible(c); c = c->snext);
  465. for(i = 0; i < LENGTH(tags); i++) {
  466. dc.w = textw(tags[i]);
  467. if(tagset[seltags] & 1 << i) {
  468. drawtext(tags[i], dc.sel, isurgent(i));
  469. drawsquare(c && c->tags & 1 << i, isoccupied(i), isurgent(i), dc.sel);
  470. }
  471. else {
  472. drawtext(tags[i], dc.norm, isurgent(i));
  473. drawsquare(c && c->tags & 1 << i, isoccupied(i), isurgent(i), dc.norm);
  474. }
  475. dc.x += dc.w;
  476. }
  477. if(blw > 0) {
  478. dc.w = blw;
  479. drawtext(lt->symbol, dc.norm, False);
  480. x = dc.x + dc.w;
  481. }
  482. else
  483. x = dc.x;
  484. dc.w = textw(stext);
  485. dc.x = bw - dc.w;
  486. if(dc.x < x) {
  487. dc.x = x;
  488. dc.w = bw - x;
  489. }
  490. drawtext(stext, dc.norm, False);
  491. if((dc.w = dc.x - x) > bh) {
  492. dc.x = x;
  493. if(c) {
  494. drawtext(c->name, dc.sel, False);
  495. drawsquare(False, c->isfloating, False, dc.sel);
  496. }
  497. else
  498. drawtext(NULL, dc.norm, False);
  499. }
  500. XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
  501. XSync(dpy, False);
  502. }
  503. void
  504. drawsquare(Bool filled, Bool empty, Bool invert, ulong col[ColLast]) {
  505. int x;
  506. XGCValues gcv;
  507. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  508. gcv.foreground = col[invert ? ColBG : ColFG];
  509. XChangeGC(dpy, dc.gc, GCForeground, &gcv);
  510. x = (dc.font.ascent + dc.font.descent + 2) / 4;
  511. r.x = dc.x + 1;
  512. r.y = dc.y + 1;
  513. if(filled) {
  514. r.width = r.height = x + 1;
  515. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  516. }
  517. else if(empty) {
  518. r.width = r.height = x;
  519. XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  520. }
  521. }
  522. void
  523. drawtext(const char *text, ulong col[ColLast], Bool invert) {
  524. int x, y, w, h;
  525. uint len, olen;
  526. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  527. char buf[256];
  528. XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
  529. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  530. if(!text)
  531. return;
  532. olen = strlen(text);
  533. len = MIN(olen, sizeof buf);
  534. memcpy(buf, text, len);
  535. w = 0;
  536. h = dc.font.ascent + dc.font.descent;
  537. y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  538. x = dc.x + (h / 2);
  539. /* shorten text if necessary */
  540. for(; len && (w = textnw(buf, len)) > dc.w - h; len--);
  541. if(!len)
  542. return;
  543. if(len < olen) {
  544. if(len > 1)
  545. buf[len - 1] = '.';
  546. if(len > 2)
  547. buf[len - 2] = '.';
  548. if(len > 3)
  549. buf[len - 3] = '.';
  550. }
  551. XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
  552. if(dc.font.set)
  553. XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  554. else
  555. XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  556. }
  557. void *
  558. emallocz(uint size) {
  559. void *res = calloc(1, size);
  560. if(!res)
  561. eprint("fatal: could not malloc() %u bytes\n", size);
  562. return res;
  563. }
  564. void
  565. enternotify(XEvent *e) {
  566. Client *c;
  567. XCrossingEvent *ev = &e->xcrossing;
  568. if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
  569. return;
  570. if((c = getclient(ev->window)))
  571. focus(c);
  572. else
  573. focus(NULL);
  574. }
  575. void
  576. eprint(const char *errstr, ...) {
  577. va_list ap;
  578. va_start(ap, errstr);
  579. vfprintf(stderr, errstr, ap);
  580. va_end(ap);
  581. exit(EXIT_FAILURE);
  582. }
  583. void
  584. expose(XEvent *e) {
  585. XExposeEvent *ev = &e->xexpose;
  586. if(ev->count == 0 && (ev->window == barwin))
  587. drawbar();
  588. }
  589. void
  590. focus(Client *c) {
  591. if(!c || (c && !isvisible(c)))
  592. for(c = stack; c && !isvisible(c); c = c->snext);
  593. if(sel && sel != c) {
  594. grabbuttons(sel, False);
  595. XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
  596. }
  597. if(c) {
  598. detachstack(c);
  599. attachstack(c);
  600. grabbuttons(c, True);
  601. }
  602. sel = c;
  603. if(c) {
  604. XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
  605. XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  606. }
  607. else
  608. XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
  609. drawbar();
  610. }
  611. void
  612. focusin(XEvent *e) { /* there are some broken focus acquiring clients */
  613. XFocusChangeEvent *ev = &e->xfocus;
  614. if(sel && ev->window != sel->win)
  615. XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
  616. }
  617. void
  618. focusnext(const void *arg) {
  619. Client *c;
  620. if(!sel)
  621. return;
  622. for(c = sel->next; c && !isvisible(c); c = c->next);
  623. if(!c)
  624. for(c = clients; c && !isvisible(c); c = c->next);
  625. if(c) {
  626. focus(c);
  627. restack();
  628. }
  629. }
  630. void
  631. focusprev(const void *arg) {
  632. Client *c;
  633. if(!sel)
  634. return;
  635. for(c = sel->prev; c && !isvisible(c); c = c->prev);
  636. if(!c) {
  637. for(c = clients; c && c->next; c = c->next);
  638. for(; c && !isvisible(c); c = c->prev);
  639. }
  640. if(c) {
  641. focus(c);
  642. restack();
  643. }
  644. }
  645. Client *
  646. getclient(Window w) {
  647. Client *c;
  648. for(c = clients; c && c->win != w; c = c->next);
  649. return c;
  650. }
  651. ulong
  652. getcolor(const char *colstr) {
  653. Colormap cmap = DefaultColormap(dpy, screen);
  654. XColor color;
  655. if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
  656. eprint("error, cannot allocate color '%s'\n", colstr);
  657. return color.pixel;
  658. }
  659. long
  660. getstate(Window w) {
  661. int format, status;
  662. long result = -1;
  663. unsigned char *p = NULL;
  664. ulong n, extra;
  665. Atom real;
  666. status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
  667. &real, &format, &n, &extra, (unsigned char **)&p);
  668. if(status != Success)
  669. return -1;
  670. if(n != 0)
  671. result = *p;
  672. XFree(p);
  673. return result;
  674. }
  675. Bool
  676. gettextprop(Window w, Atom atom, char *text, uint size) {
  677. char **list = NULL;
  678. int n;
  679. XTextProperty name;
  680. if(!text || size == 0)
  681. return False;
  682. text[0] = '\0';
  683. XGetTextProperty(dpy, w, &name, atom);
  684. if(!name.nitems)
  685. return False;
  686. if(name.encoding == XA_STRING)
  687. strncpy(text, (char *)name.value, size - 1);
  688. else {
  689. if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
  690. && n > 0 && *list) {
  691. strncpy(text, *list, size - 1);
  692. XFreeStringList(list);
  693. }
  694. }
  695. text[size - 1] = '\0';
  696. XFree(name.value);
  697. return True;
  698. }
  699. void
  700. grabbuttons(Client *c, Bool focused) {
  701. int i, j;
  702. uint buttons[] = { Button1, Button2, Button3 };
  703. uint modifiers[] = { MODKEY, MODKEY|LockMask, MODKEY|numlockmask,
  704. MODKEY|numlockmask|LockMask} ;
  705. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  706. if(focused)
  707. for(i = 0; i < LENGTH(buttons); i++)
  708. for(j = 0; j < LENGTH(modifiers); j++)
  709. XGrabButton(dpy, buttons[i], modifiers[j], c->win, False,
  710. BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  711. else
  712. XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
  713. BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  714. }
  715. void
  716. grabkeys(void) {
  717. uint i, j;
  718. KeyCode code;
  719. XModifierKeymap *modmap;
  720. /* init modifier map */
  721. modmap = XGetModifierMapping(dpy);
  722. for(i = 0; i < 8; i++)
  723. for(j = 0; j < modmap->max_keypermod; j++) {
  724. if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
  725. numlockmask = (1 << i);
  726. }
  727. XFreeModifiermap(modmap);
  728. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  729. for(i = 0; i < LENGTH(keys); i++) {
  730. code = XKeysymToKeycode(dpy, keys[i].keysym);
  731. XGrabKey(dpy, code, keys[i].mod, root, True,
  732. GrabModeAsync, GrabModeAsync);
  733. XGrabKey(dpy, code, keys[i].mod|LockMask, root, True,
  734. GrabModeAsync, GrabModeAsync);
  735. XGrabKey(dpy, code, keys[i].mod|numlockmask, root, True,
  736. GrabModeAsync, GrabModeAsync);
  737. XGrabKey(dpy, code, keys[i].mod|numlockmask|LockMask, root, True,
  738. GrabModeAsync, GrabModeAsync);
  739. }
  740. }
  741. void
  742. initfont(const char *fontstr) {
  743. char *def, **missing;
  744. int i, n;
  745. missing = NULL;
  746. if(dc.font.set)
  747. XFreeFontSet(dpy, dc.font.set);
  748. dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
  749. if(missing) {
  750. while(n--)
  751. fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
  752. XFreeStringList(missing);
  753. }
  754. if(dc.font.set) {
  755. XFontSetExtents *font_extents;
  756. XFontStruct **xfonts;
  757. char **font_names;
  758. dc.font.ascent = dc.font.descent = 0;
  759. font_extents = XExtentsOfFontSet(dc.font.set);
  760. n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
  761. for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
  762. dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
  763. dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
  764. xfonts++;
  765. }
  766. }
  767. else {
  768. if(dc.font.xfont)
  769. XFreeFont(dpy, dc.font.xfont);
  770. dc.font.xfont = NULL;
  771. if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
  772. && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
  773. eprint("error, cannot load font: '%s'\n", fontstr);
  774. dc.font.ascent = dc.font.xfont->ascent;
  775. dc.font.descent = dc.font.xfont->descent;
  776. }
  777. dc.font.height = dc.font.ascent + dc.font.descent;
  778. }
  779. Bool
  780. isoccupied(uint t) {
  781. Client *c;
  782. for(c = clients; c; c = c->next)
  783. if(c->tags & 1 << t)
  784. return True;
  785. return False;
  786. }
  787. Bool
  788. isprotodel(Client *c) {
  789. int i, n;
  790. Atom *protocols;
  791. Bool ret = False;
  792. if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
  793. for(i = 0; !ret && i < n; i++)
  794. if(protocols[i] == wmatom[WMDelete])
  795. ret = True;
  796. XFree(protocols);
  797. }
  798. return ret;
  799. }
  800. Bool
  801. isurgent(uint t) {
  802. Client *c;
  803. for(c = clients; c; c = c->next)
  804. if(c->isurgent && c->tags & 1 << t)
  805. return True;
  806. return False;
  807. }
  808. Bool
  809. isvisible(Client *c) {
  810. return c->tags & tagset[seltags];
  811. }
  812. void
  813. keypress(XEvent *e) {
  814. uint i;
  815. KeySym keysym;
  816. XKeyEvent *ev;
  817. ev = &e->xkey;
  818. keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
  819. for(i = 0; i < LENGTH(keys); i++)
  820. if(keysym == keys[i].keysym
  821. && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state))
  822. {
  823. if(keys[i].func)
  824. keys[i].func(keys[i].arg);
  825. }
  826. }
  827. void
  828. killclient(const void *arg) {
  829. XEvent ev;
  830. if(!sel)
  831. return;
  832. if(isprotodel(sel)) {
  833. ev.type = ClientMessage;
  834. ev.xclient.window = sel->win;
  835. ev.xclient.message_type = wmatom[WMProtocols];
  836. ev.xclient.format = 32;
  837. ev.xclient.data.l[0] = wmatom[WMDelete];
  838. ev.xclient.data.l[1] = CurrentTime;
  839. XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
  840. }
  841. else
  842. XKillClient(dpy, sel->win);
  843. }
  844. void
  845. manage(Window w, XWindowAttributes *wa) {
  846. Client *c, *t = NULL;
  847. Status rettrans;
  848. Window trans;
  849. XWindowChanges wc;
  850. c = emallocz(sizeof(Client));
  851. c->win = w;
  852. /* geometry */
  853. c->x = wa->x;
  854. c->y = wa->y;
  855. c->w = wa->width;
  856. c->h = wa->height;
  857. c->oldbw = wa->border_width;
  858. if(c->w == sw && c->h == sh) {
  859. c->x = sx;
  860. c->y = sy;
  861. c->bw = wa->border_width;
  862. }
  863. else {
  864. if(c->x + c->w + 2 * c->bw > sx + sw)
  865. c->x = sx + sw - c->w - 2 * c->bw;
  866. if(c->y + c->h + 2 * c->bw > sy + sh)
  867. c->y = sy + sh - c->h - 2 * c->bw;
  868. c->x = MAX(c->x, sx);
  869. c->y = MAX(c->y, by == 0 ? bh : sy);
  870. c->bw = borderpx;
  871. }
  872. wc.border_width = c->bw;
  873. XConfigureWindow(dpy, w, CWBorderWidth, &wc);
  874. XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
  875. configure(c); /* propagates border_width, if size doesn't change */
  876. updatesizehints(c);
  877. XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
  878. grabbuttons(c, False);
  879. updatetitle(c);
  880. if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
  881. for(t = clients; t && t->win != trans; t = t->next);
  882. if(t)
  883. c->tags = t->tags;
  884. else
  885. applyrules(c);
  886. if(!c->isfloating)
  887. c->isfloating = (rettrans == Success) || c->isfixed;
  888. attach(c);
  889. attachstack(c);
  890. XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
  891. ban(c);
  892. XMapWindow(dpy, c->win);
  893. setclientstate(c, NormalState);
  894. arrange();
  895. }
  896. void
  897. mappingnotify(XEvent *e) {
  898. XMappingEvent *ev = &e->xmapping;
  899. XRefreshKeyboardMapping(ev);
  900. if(ev->request == MappingKeyboard)
  901. grabkeys();
  902. }
  903. void
  904. maprequest(XEvent *e) {
  905. static XWindowAttributes wa;
  906. XMapRequestEvent *ev = &e->xmaprequest;
  907. if(!XGetWindowAttributes(dpy, ev->window, &wa))
  908. return;
  909. if(wa.override_redirect)
  910. return;
  911. if(!getclient(ev->window))
  912. manage(ev->window, &wa);
  913. }
  914. void
  915. movemouse(Client *c) {
  916. int x1, y1, ocx, ocy, di, nx, ny;
  917. uint dui;
  918. Window dummy;
  919. XEvent ev;
  920. ocx = nx = c->x;
  921. ocy = ny = c->y;
  922. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  923. None, cursor[CurMove], CurrentTime) != GrabSuccess)
  924. return;
  925. XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  926. for(;;) {
  927. XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
  928. switch (ev.type) {
  929. case ButtonRelease:
  930. XUngrabPointer(dpy, CurrentTime);
  931. return;
  932. case ConfigureRequest:
  933. case Expose:
  934. case MapRequest:
  935. handler[ev.type](&ev);
  936. break;
  937. case MotionNotify:
  938. XSync(dpy, False);
  939. nx = ocx + (ev.xmotion.x - x1);
  940. ny = ocy + (ev.xmotion.y - y1);
  941. if(snap && nx >= wx && nx <= wx + ww
  942. && ny >= wy && ny <= wy + wh) {
  943. if(abs(wx - nx) < snap)
  944. nx = wx;
  945. else if(abs((wx + ww) - (nx + c->w + 2 * c->bw)) < snap)
  946. nx = wx + ww - c->w - 2 * c->bw;
  947. if(abs(wy - ny) < snap)
  948. ny = wy;
  949. else if(abs((wy + wh) - (ny + c->h + 2 * c->bw)) < snap)
  950. ny = wy + wh - c->h - 2 * c->bw;
  951. if(!c->isfloating && lt->arrange && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
  952. togglefloating(NULL);
  953. }
  954. if(!lt->arrange || c->isfloating)
  955. resize(c, nx, ny, c->w, c->h, False);
  956. break;
  957. }
  958. }
  959. }
  960. Client *
  961. nexttiled(Client *c) {
  962. for(; c && (c->isfloating || !isvisible(c)); c = c->next);
  963. return c;
  964. }
  965. void
  966. propertynotify(XEvent *e) {
  967. Client *c;
  968. Window trans;
  969. XPropertyEvent *ev = &e->xproperty;
  970. if(ev->state == PropertyDelete)
  971. return; /* ignore */
  972. if((c = getclient(ev->window))) {
  973. switch (ev->atom) {
  974. default: break;
  975. case XA_WM_TRANSIENT_FOR:
  976. XGetTransientForHint(dpy, c->win, &trans);
  977. if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
  978. arrange();
  979. break;
  980. case XA_WM_NORMAL_HINTS:
  981. updatesizehints(c);
  982. break;
  983. case XA_WM_HINTS:
  984. updatewmhints(c);
  985. drawbar();
  986. break;
  987. }
  988. if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
  989. updatetitle(c);
  990. if(c == sel)
  991. drawbar();
  992. }
  993. }
  994. }
  995. void
  996. quit(const void *arg) {
  997. readin = running = False;
  998. }
  999. void
  1000. resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
  1001. XWindowChanges wc;
  1002. if(sizehints) {
  1003. /* set minimum possible */
  1004. w = MAX(1, w);
  1005. h = MAX(1, h);
  1006. /* temporarily remove base dimensions */
  1007. w -= c->basew;
  1008. h -= c->baseh;
  1009. /* adjust for aspect limits */
  1010. if(c->minax != c->maxax && c->minay != c->maxay
  1011. && c->minax > 0 && c->maxax > 0 && c->minay > 0 && c->maxay > 0) {
  1012. if(w * c->maxay > h * c->maxax)
  1013. w = h * c->maxax / c->maxay;
  1014. else if(w * c->minay < h * c->minax)
  1015. h = w * c->minay / c->minax;
  1016. }
  1017. /* adjust for increment value */
  1018. if(c->incw)
  1019. w -= w % c->incw;
  1020. if(c->inch)
  1021. h -= h % c->inch;
  1022. /* restore base dimensions */
  1023. w += c->basew;
  1024. h += c->baseh;
  1025. w = MAX(w, c->minw);
  1026. h = MAX(h, c->minh);
  1027. if (c->maxw)
  1028. w = MIN(w, c->maxw);
  1029. if (c->maxh)
  1030. h = MIN(h, c->maxh);
  1031. }
  1032. if(w <= 0 || h <= 0)
  1033. return;
  1034. if(x > sx + sw)
  1035. x = sw - w - 2 * c->bw;
  1036. if(y > sy + sh)
  1037. y = sh - h - 2 * c->bw;
  1038. if(x + w + 2 * c->bw < sx)
  1039. x = sx;
  1040. if(y + h + 2 * c->bw < sy)
  1041. y = sy;
  1042. if(c->x != x || c->y != y || c->w != w || c->h != h) {
  1043. c->x = wc.x = x;
  1044. c->y = wc.y = y;
  1045. c->w = wc.width = w;
  1046. c->h = wc.height = h;
  1047. wc.border_width = c->bw;
  1048. XConfigureWindow(dpy, c->win,
  1049. CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
  1050. configure(c);
  1051. XSync(dpy, False);
  1052. }
  1053. }
  1054. void
  1055. resizemouse(Client *c) {
  1056. int ocx, ocy;
  1057. int nw, nh;
  1058. XEvent ev;
  1059. ocx = c->x;
  1060. ocy = c->y;
  1061. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  1062. None, cursor[CurResize], CurrentTime) != GrabSuccess)
  1063. return;
  1064. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
  1065. for(;;) {
  1066. XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask , &ev);
  1067. switch(ev.type) {
  1068. case ButtonRelease:
  1069. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
  1070. c->w + c->bw - 1, c->h + c->bw - 1);
  1071. XUngrabPointer(dpy, CurrentTime);
  1072. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1073. return;
  1074. case ConfigureRequest:
  1075. case Expose:
  1076. case MapRequest:
  1077. handler[ev.type](&ev);
  1078. break;
  1079. case MotionNotify:
  1080. XSync(dpy, False);
  1081. nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
  1082. nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
  1083. if(snap && nw >= wx && nw <= wx + ww
  1084. && nh >= wy && nh <= wy + wh) {
  1085. if(!c->isfloating && lt->arrange
  1086. && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
  1087. togglefloating(NULL);
  1088. }
  1089. if(!lt->arrange || c->isfloating)
  1090. resize(c, c->x, c->y, nw, nh, True);
  1091. break;
  1092. }
  1093. }
  1094. }
  1095. void
  1096. restack(void) {
  1097. Client *c;
  1098. XEvent ev;
  1099. XWindowChanges wc;
  1100. drawbar();
  1101. if(!sel)
  1102. return;
  1103. if(sel->isfloating || !lt->arrange)
  1104. XRaiseWindow(dpy, sel->win);
  1105. if(lt->arrange) {
  1106. wc.stack_mode = Below;
  1107. wc.sibling = barwin;
  1108. for(c = stack; c; c = c->snext)
  1109. if(!c->isfloating && isvisible(c)) {
  1110. XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
  1111. wc.sibling = c->win;
  1112. }
  1113. }
  1114. XSync(dpy, False);
  1115. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1116. }
  1117. void
  1118. run(void) {
  1119. char *p;
  1120. char sbuf[sizeof stext];
  1121. fd_set rd;
  1122. int r, xfd;
  1123. uint len, offset;
  1124. XEvent ev;
  1125. /* main event loop, also reads status text from stdin */
  1126. XSync(dpy, False);
  1127. xfd = ConnectionNumber(dpy);
  1128. readin = True;
  1129. offset = 0;
  1130. len = sizeof stext - 1;
  1131. sbuf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
  1132. while(running) {
  1133. FD_ZERO(&rd);
  1134. if(readin)
  1135. FD_SET(STDIN_FILENO, &rd);
  1136. FD_SET(xfd, &rd);
  1137. if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
  1138. if(errno == EINTR)
  1139. continue;
  1140. eprint("select failed\n");
  1141. }
  1142. if(FD_ISSET(STDIN_FILENO, &rd)) {
  1143. switch((r = read(STDIN_FILENO, sbuf + offset, len - offset))) {
  1144. case -1:
  1145. strncpy(stext, strerror(errno), len);
  1146. readin = False;
  1147. break;
  1148. case 0:
  1149. strncpy(stext, "EOF", 4);
  1150. readin = False;
  1151. break;
  1152. default:
  1153. for(p = sbuf + offset; r > 0; p++, r--, offset++)
  1154. if(*p == '\n' || *p == '\0') {
  1155. *p = '\0';
  1156. strncpy(stext, sbuf, len);
  1157. p += r - 1; /* p is sbuf + offset + r - 1 */
  1158. for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
  1159. offset = r;
  1160. if(r)
  1161. memmove(sbuf, p - r + 1, r);
  1162. break;
  1163. }
  1164. break;
  1165. }
  1166. drawbar();
  1167. }
  1168. while(XPending(dpy)) {
  1169. XNextEvent(dpy, &ev);
  1170. if(handler[ev.type])
  1171. (handler[ev.type])(&ev); /* call handler */
  1172. }
  1173. }
  1174. }
  1175. void
  1176. scan(void) {
  1177. uint i, num;
  1178. Window *wins, d1, d2;
  1179. XWindowAttributes wa;
  1180. wins = NULL;
  1181. if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
  1182. for(i = 0; i < num; i++) {
  1183. if(!XGetWindowAttributes(dpy, wins[i], &wa)
  1184. || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
  1185. continue;
  1186. if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
  1187. manage(wins[i], &wa);
  1188. }
  1189. for(i = 0; i < num; i++) { /* now the transients */
  1190. if(!XGetWindowAttributes(dpy, wins[i], &wa))
  1191. continue;
  1192. if(XGetTransientForHint(dpy, wins[i], &d1)
  1193. && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
  1194. manage(wins[i], &wa);
  1195. }
  1196. }
  1197. if(wins)
  1198. XFree(wins);
  1199. }
  1200. void
  1201. setclientstate(Client *c, long state) {
  1202. long data[] = {state, None};
  1203. XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
  1204. PropModeReplace, (unsigned char *)data, 2);
  1205. }
  1206. /* arg > 1.0 will set mfact absolutly */
  1207. void
  1208. setmfact(const void *arg) {
  1209. double d = *((double*) arg);
  1210. if(!d || lt->arrange != tile)
  1211. return;
  1212. d = d < 1.0 ? d + mfact : d - 1.0;
  1213. if(d < 0.1 || d > 0.9)
  1214. return;
  1215. mfact = d;
  1216. updatetilegeom();
  1217. arrange();
  1218. }
  1219. void
  1220. setup(void) {
  1221. uint i, w;
  1222. XSetWindowAttributes wa;
  1223. /* init screen */
  1224. screen = DefaultScreen(dpy);
  1225. root = RootWindow(dpy, screen);
  1226. initfont(FONT);
  1227. sx = 0;
  1228. sy = 0;
  1229. sw = DisplayWidth(dpy, screen);
  1230. sh = DisplayHeight(dpy, screen);
  1231. bh = dc.font.height + 2;
  1232. updategeom();
  1233. /* init atoms */
  1234. wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
  1235. wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
  1236. wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
  1237. wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
  1238. netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
  1239. netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
  1240. /* init cursors */
  1241. wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
  1242. cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
  1243. cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
  1244. /* init appearance */
  1245. dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
  1246. dc.norm[ColBG] = getcolor(NORMBGCOLOR);
  1247. dc.norm[ColFG] = getcolor(NORMFGCOLOR);
  1248. dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
  1249. dc.sel[ColBG] = getcolor(SELBGCOLOR);
  1250. dc.sel[ColFG] = getcolor(SELFGCOLOR);
  1251. initfont(FONT);
  1252. dc.h = bh;
  1253. dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
  1254. dc.gc = XCreateGC(dpy, root, 0, 0);
  1255. XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
  1256. if(!dc.font.set)
  1257. XSetFont(dpy, dc.gc, dc.font.xfont->fid);
  1258. /* init bar */
  1259. for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
  1260. w = textw(layouts[i].symbol);
  1261. blw = MAX(blw, w);
  1262. }
  1263. wa.override_redirect = 1;
  1264. wa.background_pixmap = ParentRelative;
  1265. wa.event_mask = ButtonPressMask|ExposureMask;
  1266. barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
  1267. CopyFromParent, DefaultVisual(dpy, screen),
  1268. CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
  1269. XDefineCursor(dpy, barwin, cursor[CurNormal]);
  1270. XMapRaised(dpy, barwin);
  1271. strcpy(stext, "dwm-"VERSION);
  1272. drawbar();
  1273. /* EWMH support per view */
  1274. XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
  1275. PropModeReplace, (unsigned char *) netatom, NetLast);
  1276. /* select for events */
  1277. wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
  1278. |EnterWindowMask|LeaveWindowMask|StructureNotifyMask;
  1279. XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
  1280. XSelectInput(dpy, root, wa.event_mask);
  1281. /* grab keys */
  1282. grabkeys();
  1283. }
  1284. void
  1285. spawn(const void *arg) {
  1286. static char *shell = NULL;
  1287. if(!shell && !(shell = getenv("SHELL")))
  1288. shell = "/bin/sh";
  1289. /* The double-fork construct avoids zombie processes and keeps the code
  1290. * clean from stupid signal handlers. */
  1291. if(fork() == 0) {
  1292. if(fork() == 0) {
  1293. if(dpy)
  1294. close(ConnectionNumber(dpy));
  1295. setsid();
  1296. execl(shell, shell, "-c", (char *)arg, (char *)NULL);
  1297. fprintf(stderr, "dwm: execl '%s -c %s'", shell, (char *)arg);
  1298. perror(" failed");
  1299. }
  1300. exit(0);
  1301. }
  1302. wait(0);
  1303. }
  1304. void
  1305. tag(const void *arg) {
  1306. if(sel && *(int *)arg & TAGMASK) {
  1307. sel->tags = *(int *)arg & TAGMASK;
  1308. arrange();
  1309. }
  1310. }
  1311. uint
  1312. textnw(const char *text, uint len) {
  1313. XRectangle r;
  1314. if(dc.font.set) {
  1315. XmbTextExtents(dc.font.set, text, len, NULL, &r);
  1316. return r.width;
  1317. }
  1318. return XTextWidth(dc.font.xfont, text, len);
  1319. }
  1320. uint
  1321. textw(const char *text) {
  1322. return textnw(text, strlen(text)) + dc.font.height;
  1323. }
  1324. void
  1325. tile(void) {
  1326. int x, y, h, w;
  1327. uint i, n;
  1328. Client *c;
  1329. for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next), n++);
  1330. if(n == 0)
  1331. return;
  1332. /* master */
  1333. c = nexttiled(clients);
  1334. if(n == 1)
  1335. tileresize(c, wx, wy, ww - 2 * c->bw, wh - 2 * c->bw);
  1336. else
  1337. tileresize(c, mx, my, mw - 2 * c->bw, mh - 2 * c->bw);
  1338. if(--n == 0)
  1339. return;
  1340. /* tile stack */
  1341. x = (tx > c->x + c->w) ? c->x + c->w + 2 * c->bw : tw;
  1342. y = ty;
  1343. w = (tx > c->x + c->w) ? wx + ww - x : tw;
  1344. h = th / n;
  1345. if(h < bh)
  1346. h = th;
  1347. for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
  1348. if(i + 1 == n) /* remainder */
  1349. tileresize(c, x, y, w - 2 * c->bw, (ty + th) - y - 2 * c->bw);
  1350. else
  1351. tileresize(c, x, y, w - 2 * c->bw, h - 2 * c->bw);
  1352. if(h != th)
  1353. y = c->y + c->h + 2 * c->bw;
  1354. }
  1355. }
  1356. void
  1357. tileresize(Client *c, int x, int y, int w, int h) {
  1358. resize(c, x, y, w, h, resizehints);
  1359. if(resizehints && ((c->h < bh) || (c->h > h) || (c->w < bh) || (c->w > w)))
  1360. /* client doesn't accept size constraints */
  1361. resize(c, x, y, w, h, False);
  1362. }
  1363. void
  1364. togglebar(const void *arg) {
  1365. showbar = !showbar;
  1366. updategeom();
  1367. updatebar();
  1368. arrange();
  1369. }
  1370. void
  1371. togglefloating(const void *arg) {
  1372. if(!sel)
  1373. return;
  1374. sel->isfloating = !sel->isfloating;
  1375. if(sel->isfloating)
  1376. resize(sel, sel->x, sel->y, sel->w, sel->h, True);
  1377. arrange();
  1378. }
  1379. void
  1380. togglelayout(const void *arg) {
  1381. uint i;
  1382. if(!arg) {
  1383. if(++lt == &layouts[LENGTH(layouts)])
  1384. lt = &layouts[0];
  1385. }
  1386. else {
  1387. for(i = 0; i < LENGTH(layouts); i++)
  1388. if(!strcmp((char *)arg, layouts[i].symbol))
  1389. break;
  1390. if(i == LENGTH(layouts))
  1391. return;
  1392. lt = &layouts[i];
  1393. }
  1394. if(sel)
  1395. arrange();
  1396. else
  1397. drawbar();
  1398. }
  1399. void
  1400. toggletag(const void *arg) {
  1401. if(sel && (sel->tags ^ ((*(int *)arg) & TAGMASK))) {
  1402. sel->tags ^= (*(int *)arg) & TAGMASK;
  1403. arrange();
  1404. }
  1405. }
  1406. void
  1407. toggleview(const void *arg) {
  1408. if((tagset[seltags] ^ ((*(int *)arg) & TAGMASK))) {
  1409. tagset[seltags] ^= (*(int *)arg) & TAGMASK;
  1410. arrange();
  1411. }
  1412. }
  1413. void
  1414. unban(Client *c) {
  1415. if(!c->isbanned)
  1416. return;
  1417. XMoveWindow(dpy, c->win, c->x, c->y);
  1418. c->isbanned = False;
  1419. }
  1420. void
  1421. unmanage(Client *c) {
  1422. XWindowChanges wc;
  1423. wc.border_width = c->oldbw;
  1424. /* The server grab construct avoids race conditions. */
  1425. XGrabServer(dpy);
  1426. XSetErrorHandler(xerrordummy);
  1427. XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
  1428. detach(c);
  1429. detachstack(c);
  1430. if(sel == c)
  1431. focus(NULL);
  1432. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  1433. setclientstate(c, WithdrawnState);
  1434. free(c);
  1435. XSync(dpy, False);
  1436. XSetErrorHandler(xerror);
  1437. XUngrabServer(dpy);
  1438. arrange();
  1439. }
  1440. void
  1441. unmapnotify(XEvent *e) {
  1442. Client *c;
  1443. XUnmapEvent *ev = &e->xunmap;
  1444. if((c = getclient(ev->window)))
  1445. unmanage(c);
  1446. }
  1447. void
  1448. updatebar(void) {
  1449. if(dc.drawable != 0)
  1450. XFreePixmap(dpy, dc.drawable);
  1451. dc.drawable = XCreatePixmap(dpy, root, bw, bh, DefaultDepth(dpy, screen));
  1452. XMoveResizeWindow(dpy, barwin, bx, by, bw, bh);
  1453. }
  1454. void
  1455. updategeom(void) {
  1456. int i;
  1457. #ifdef XINERAMA
  1458. XineramaScreenInfo *info = NULL;
  1459. /* window area geometry */
  1460. if(XineramaIsActive(dpy)) {
  1461. info = XineramaQueryScreens(dpy, &i);
  1462. wx = info[0].x_org;
  1463. wy = showbar && topbar ? info[0].y_org + bh : info[0].y_org;
  1464. ww = info[0].width;
  1465. wh = showbar ? info[0].height - bh : info[0].height;
  1466. XFree(info);
  1467. }
  1468. else
  1469. #endif
  1470. {
  1471. wx = sx;
  1472. wy = showbar && topbar ? sy + bh : sy;
  1473. ww = sw;
  1474. wh = showbar ? sh - bh : sh;
  1475. }
  1476. /* bar geometry */
  1477. bx = wx;
  1478. by = showbar ? (topbar ? wy - bh : wy + wh) : -bh;
  1479. bw = ww;
  1480. /* update layout geometries */
  1481. for(i = 0; i < LENGTH(layouts); i++)
  1482. if(layouts[i].updategeom)
  1483. layouts[i].updategeom();
  1484. }
  1485. void
  1486. updatesizehints(Client *c) {
  1487. long msize;
  1488. XSizeHints size;
  1489. if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
  1490. size.flags = PSize;
  1491. c->flags = size.flags;
  1492. if(c->flags & PBaseSize) {
  1493. c->basew = size.base_width;
  1494. c->baseh = size.base_height;
  1495. }
  1496. else if(c->flags & PMinSize) {
  1497. c->basew = size.min_width;
  1498. c->baseh = size.min_height;
  1499. }
  1500. else
  1501. c->basew = c->baseh = 0;
  1502. if(c->flags & PResizeInc) {
  1503. c->incw = size.width_inc;
  1504. c->inch = size.height_inc;
  1505. }
  1506. else
  1507. c->incw = c->inch = 0;
  1508. if(c->flags & PMaxSize) {
  1509. c->maxw = size.max_width;
  1510. c->maxh = size.max_height;
  1511. }
  1512. else
  1513. c->maxw = c->maxh = 0;
  1514. if(c->flags & PMinSize) {
  1515. c->minw = size.min_width;
  1516. c->minh = size.min_height;
  1517. }
  1518. else if(c->flags & PBaseSize) {
  1519. c->minw = size.base_width;
  1520. c->minh = size.base_height;
  1521. }
  1522. else
  1523. c->minw = c->minh = 0;
  1524. if(c->flags & PAspect) {
  1525. c->minax = size.min_aspect.x;
  1526. c->maxax = size.max_aspect.x;
  1527. c->minay = size.min_aspect.y;
  1528. c->maxay = size.max_aspect.y;
  1529. }
  1530. else
  1531. c->minax = c->maxax = c->minay = c->maxay = 0;
  1532. c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
  1533. && c->maxw == c->minw && c->maxh == c->minh);
  1534. }
  1535. void
  1536. updatetilegeom(void) {
  1537. /* master area geometry */
  1538. mx = wx;
  1539. my = wy;
  1540. mw = mfact * ww;
  1541. mh = wh;
  1542. /* tile area geometry */
  1543. tx = mx + mw;
  1544. ty = wy;
  1545. tw = ww - mw;
  1546. th = wh;
  1547. }
  1548. void
  1549. updatetitle(Client *c) {
  1550. if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
  1551. gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
  1552. }
  1553. void
  1554. updatewmhints(Client *c) {
  1555. XWMHints *wmh;
  1556. if((wmh = XGetWMHints(dpy, c->win))) {
  1557. if(c == sel)
  1558. sel->isurgent = False;
  1559. else
  1560. c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
  1561. XFree(wmh);
  1562. }
  1563. }
  1564. void
  1565. view(const void *arg) {
  1566. if(*(int *)arg & TAGMASK) {
  1567. seltags ^= 1; /* toggle sel tagset */
  1568. tagset[seltags] = *(int *)arg & TAGMASK;
  1569. arrange();
  1570. }
  1571. }
  1572. void
  1573. viewprevtag(const void *arg) {
  1574. seltags ^= 1; /* toggle sel tagset */
  1575. arrange();
  1576. }
  1577. /* There's no way to check accesses to destroyed windows, thus those cases are
  1578. * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
  1579. * default error handler, which may call exit. */
  1580. int
  1581. xerror(Display *dpy, XErrorEvent *ee) {
  1582. if(ee->error_code == BadWindow
  1583. || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
  1584. || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
  1585. || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
  1586. || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
  1587. || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
  1588. || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
  1589. || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
  1590. || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
  1591. return 0;
  1592. fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
  1593. ee->request_code, ee->error_code);
  1594. return xerrorxlib(dpy, ee); /* may call exit */
  1595. }
  1596. int
  1597. xerrordummy(Display *dpy, XErrorEvent *ee) {
  1598. return 0;
  1599. }
  1600. /* Startup Error handler to check if another window manager
  1601. * is already running. */
  1602. int
  1603. xerrorstart(Display *dpy, XErrorEvent *ee) {
  1604. otherwm = True;
  1605. return -1;
  1606. }
  1607. void
  1608. zoom(const void *arg) {
  1609. Client *c = sel;
  1610. if(!lt->arrange || sel->isfloating)
  1611. return;
  1612. if(c == nexttiled(clients))
  1613. if(!c || !(c = nexttiled(c->next)))
  1614. return;
  1615. detach(c);
  1616. attach(c);
  1617. focus(c);
  1618. arrange();
  1619. }
  1620. int
  1621. main(int argc, char *argv[]) {
  1622. if(argc == 2 && !strcmp("-v", argv[1]))
  1623. eprint("dwm-"VERSION", © 2006-2008 dwm engineers, see LICENSE for details\n");
  1624. else if(argc != 1)
  1625. eprint("usage: dwm [-v]\n");
  1626. setlocale(LC_CTYPE, "");
  1627. if(!(dpy = XOpenDisplay(0)))
  1628. eprint("dwm: cannot open display\n");
  1629. checkotherwm();
  1630. setup();
  1631. scan();
  1632. run();
  1633. cleanup();
  1634. XCloseDisplay(dpy);
  1635. return 0;
  1636. }