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