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. #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. #define TEXTW(x) (textnw(x, strlen(x)) + dc.font.height)
  55. #define VISIBLE(x) ((x)->tags & tagset[seltags])
  56. /* enums */
  57. enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
  58. enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
  59. enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
  60. enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
  61. /* typedefs */
  62. typedef unsigned int uint;
  63. typedef unsigned long ulong;
  64. typedef struct Client Client;
  65. struct Client {
  66. char name[256];
  67. int x, y, w, h;
  68. int basew, baseh, incw, inch, maxw, maxh, minw, minh;
  69. int minax, maxax, minay, maxay;
  70. long flags;
  71. int bw, oldbw;
  72. Bool isbanned, isfixed, isfloating, ismax, isurgent;
  73. uint tags;
  74. Client *next;
  75. Client *prev;
  76. Client *snext;
  77. Window win;
  78. };
  79. typedef struct {
  80. int x, y, w, h;
  81. ulong norm[ColLast];
  82. ulong sel[ColLast];
  83. Drawable drawable;
  84. GC gc;
  85. struct {
  86. int ascent;
  87. int descent;
  88. int height;
  89. XFontSet set;
  90. XFontStruct *xfont;
  91. } font;
  92. } DC; /* draw context */
  93. typedef struct {
  94. uint mod;
  95. KeySym keysym;
  96. void (*func)(const void *arg);
  97. const void *arg;
  98. } Key;
  99. typedef struct {
  100. const char *symbol;
  101. void (*arrange)(void);
  102. } Layout;
  103. typedef struct {
  104. const char *class;
  105. const char *instance;
  106. const char *title;
  107. uint tags;
  108. Bool isfloating;
  109. } Rule;
  110. /* function declarations */
  111. void applyrules(Client *c);
  112. void arrange(void);
  113. void attach(Client *c);
  114. void attachstack(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 enternotify(XEvent *e);
  128. void eprint(const char *errstr, ...);
  129. void expose(XEvent *e);
  130. void focus(Client *c);
  131. void focusin(XEvent *e);
  132. void focusnext(const void *arg);
  133. void focusprev(const void *arg);
  134. Client *getclient(Window w);
  135. ulong getcolor(const char *colstr);
  136. long getstate(Window w);
  137. Bool gettextprop(Window w, Atom atom, char *text, uint size);
  138. void grabbuttons(Client *c, Bool focused);
  139. void grabkeys(void);
  140. void initfont(const char *fontstr);
  141. Bool isoccupied(uint t);
  142. Bool isprotodel(Client *c);
  143. Bool isurgent(uint t);
  144. void keypress(XEvent *e);
  145. void killclient(const void *arg);
  146. void manage(Window w, XWindowAttributes *wa);
  147. void mappingnotify(XEvent *e);
  148. void maprequest(XEvent *e);
  149. void movemouse(Client *c);
  150. Client *nexttiled(Client *c);
  151. void propertynotify(XEvent *e);
  152. void quit(const void *arg);
  153. void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
  154. void resizemouse(Client *c);
  155. void restack(void);
  156. void run(void);
  157. void scan(void);
  158. void setclientstate(Client *c, long state);
  159. void setmfact(const void *arg);
  160. void setup(void);
  161. void spawn(const void *arg);
  162. void tag(const void *arg);
  163. uint textnw(const char *text, uint len);
  164. void tile(void);
  165. void togglebar(const void *arg);
  166. void togglefloating(const void *arg);
  167. void togglelayout(const void *arg);
  168. void togglemax(const void *arg);
  169. void toggletag(const void *arg);
  170. void toggleview(const void *arg);
  171. void unmanage(Client *c);
  172. void unmapnotify(XEvent *e);
  173. void updatebar(void);
  174. void updategeom(void);
  175. void updatesizehints(Client *c);
  176. void updatetitle(Client *c);
  177. void updatewmhints(Client *c);
  178. void view(const void *arg);
  179. void viewprevtag(const void *arg);
  180. int xerror(Display *dpy, XErrorEvent *ee);
  181. int xerrordummy(Display *dpy, XErrorEvent *ee);
  182. int xerrorstart(Display *dpy, XErrorEvent *ee);
  183. void zoom(const void *arg);
  184. /* variables */
  185. char stext[256];
  186. int screen, sx, sy, sw, sh;
  187. int bx, by, bw, bh, blw, wx, wy, ww, wh;
  188. uint seltags = 0;
  189. int (*xerrorxlib)(Display *, XErrorEvent *);
  190. uint numlockmask = 0;
  191. void (*handler[LASTEvent]) (XEvent *) = {
  192. [ButtonPress] = buttonpress,
  193. [ConfigureRequest] = configurerequest,
  194. [ConfigureNotify] = configurenotify,
  195. [DestroyNotify] = destroynotify,
  196. [EnterNotify] = enternotify,
  197. [Expose] = expose,
  198. [FocusIn] = focusin,
  199. [KeyPress] = keypress,
  200. [MappingNotify] = mappingnotify,
  201. [MapRequest] = maprequest,
  202. [PropertyNotify] = propertynotify,
  203. [UnmapNotify] = unmapnotify
  204. };
  205. Atom wmatom[WMLast], netatom[NetLast];
  206. Bool domax = False;
  207. Bool otherwm, readin;
  208. Bool running = True;
  209. uint tagset[] = {1, 1}; /* after start, first tag is selected */
  210. Client *clients = NULL;
  211. Client *sel = NULL;
  212. Client *stack = NULL;
  213. Cursor cursor[CurLast];
  214. Display *dpy;
  215. DC dc = {0};
  216. Layout layouts[];
  217. Layout *lt = layouts;
  218. Window root, barwin;
  219. /* configuration, allows nested code to access above variables */
  220. #include "config.h"
  221. /* compile-time check if all tags fit into an uint bit array. */
  222. struct NumTags { char limitexceeded[sizeof(uint) * 8 < LENGTH(tags) ? -1 : 1]; };
  223. /* function implementations */
  224. void
  225. applyrules(Client *c) {
  226. uint i;
  227. Rule *r;
  228. XClassHint ch = { 0 };
  229. /* rule matching */
  230. XGetClassHint(dpy, c->win, &ch);
  231. for(i = 0; i < LENGTH(rules); i++) {
  232. r = &rules[i];
  233. if((!r->title || strstr(c->name, r->title))
  234. && (!r->class || (ch.res_class && strstr(ch.res_class, r->class)))
  235. && (!r->instance || (ch.res_name && strstr(ch.res_name, r->instance)))) {
  236. c->isfloating = r->isfloating;
  237. c->tags |= r->tags & TAGMASK;
  238. }
  239. }
  240. if(ch.res_class)
  241. XFree(ch.res_class);
  242. if(ch.res_name)
  243. XFree(ch.res_name);
  244. if(!c->tags)
  245. c->tags = tagset[seltags];
  246. }
  247. void
  248. arrange(void) {
  249. Client *c;
  250. for(c = clients; c; c = c->next)
  251. if(VISIBLE(c)) {
  252. if(!lt->arrange || c->isfloating)
  253. resize(c, c->x, c->y, c->w, c->h, True);
  254. }
  255. else if(!c->isbanned) {
  256. XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  257. c->isbanned = True;
  258. }
  259. focus(NULL);
  260. if(lt->arrange && !domax)
  261. lt->arrange();
  262. restack();
  263. }
  264. void
  265. attach(Client *c) {
  266. if(clients)
  267. clients->prev = c;
  268. c->next = clients;
  269. clients = c;
  270. }
  271. void
  272. attachstack(Client *c) {
  273. c->snext = stack;
  274. stack = c;
  275. }
  276. void
  277. buttonpress(XEvent *e) {
  278. uint i, x, mask;
  279. Client *c;
  280. XButtonPressedEvent *ev = &e->xbutton;
  281. if(ev->window == barwin) {
  282. x = 0;
  283. for(i = 0; i < LENGTH(tags); i++) {
  284. x += TEXTW(tags[i]);
  285. if(ev->x < x) {
  286. mask = 1 << i;
  287. if(ev->button == Button1) {
  288. if(ev->state & MODKEY)
  289. tag(&mask);
  290. else
  291. view(&mask);
  292. }
  293. else if(ev->button == Button3) {
  294. if(ev->state & MODKEY)
  295. toggletag(&mask);
  296. else
  297. toggleview(&mask);
  298. }
  299. return;
  300. }
  301. }
  302. if(ev->x < x + blw) {
  303. if(ev->button == Button1)
  304. togglelayout(NULL);
  305. else if(ev->button == Button3)
  306. togglemax(NULL);
  307. }
  308. }
  309. else if((c = getclient(ev->window))) {
  310. focus(c);
  311. if(CLEANMASK(ev->state) != MODKEY || domax)
  312. return;
  313. if(ev->button == Button1)
  314. movemouse(c);
  315. else if(ev->button == Button2)
  316. togglefloating(NULL);
  317. else if(ev->button == Button3 && !c->isfixed)
  318. resizemouse(c);
  319. }
  320. }
  321. void
  322. checkotherwm(void) {
  323. otherwm = False;
  324. XSetErrorHandler(xerrorstart);
  325. /* this causes an error if some other window manager is running */
  326. XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
  327. XSync(dpy, False);
  328. if(otherwm)
  329. eprint("dwm: another window manager is already running\n");
  330. XSync(dpy, False);
  331. XSetErrorHandler(NULL);
  332. xerrorxlib = XSetErrorHandler(xerror);
  333. XSync(dpy, False);
  334. }
  335. void
  336. cleanup(void) {
  337. close(STDIN_FILENO);
  338. view(NULL);
  339. while(stack)
  340. unmanage(stack);
  341. if(dc.font.set)
  342. XFreeFontSet(dpy, dc.font.set);
  343. else
  344. XFreeFont(dpy, dc.font.xfont);
  345. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  346. XFreePixmap(dpy, dc.drawable);
  347. XFreeGC(dpy, dc.gc);
  348. XFreeCursor(dpy, cursor[CurNormal]);
  349. XFreeCursor(dpy, cursor[CurResize]);
  350. XFreeCursor(dpy, cursor[CurMove]);
  351. XDestroyWindow(dpy, barwin);
  352. XSync(dpy, False);
  353. XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
  354. }
  355. void
  356. configure(Client *c) {
  357. XConfigureEvent ce;
  358. ce.type = ConfigureNotify;
  359. ce.display = dpy;
  360. ce.event = c->win;
  361. ce.window = c->win;
  362. ce.x = c->x;
  363. ce.y = c->y;
  364. ce.width = c->w;
  365. ce.height = c->h;
  366. ce.border_width = c->bw;
  367. ce.above = None;
  368. ce.override_redirect = False;
  369. XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
  370. }
  371. void
  372. configurenotify(XEvent *e) {
  373. XConfigureEvent *ev = &e->xconfigure;
  374. if(ev->window == root && (ev->width != sw || ev->height != sh)) {
  375. sw = ev->width;
  376. sh = ev->height;
  377. updategeom();
  378. updatebar();
  379. arrange();
  380. }
  381. }
  382. void
  383. configurerequest(XEvent *e) {
  384. Client *c;
  385. XConfigureRequestEvent *ev = &e->xconfigurerequest;
  386. XWindowChanges wc;
  387. if((c = getclient(ev->window))) {
  388. if(ev->value_mask & CWBorderWidth)
  389. c->bw = ev->border_width;
  390. if(c->isfixed || c->isfloating || !lt->arrange) {
  391. if(ev->value_mask & CWX)
  392. c->x = sx + ev->x;
  393. if(ev->value_mask & CWY)
  394. c->y = sy + ev->y;
  395. if(ev->value_mask & CWWidth)
  396. c->w = ev->width;
  397. if(ev->value_mask & CWHeight)
  398. c->h = ev->height;
  399. if((c->x - sx + c->w) > sw && c->isfloating)
  400. c->x = sx + (sw / 2 - c->w / 2); /* center in x direction */
  401. if((c->y - sy + c->h) > sh && c->isfloating)
  402. c->y = sy + (sh / 2 - c->h / 2); /* center in y direction */
  403. if((ev->value_mask & (CWX|CWY))
  404. && !(ev->value_mask & (CWWidth|CWHeight)))
  405. configure(c);
  406. if(VISIBLE(c))
  407. XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
  408. }
  409. else
  410. configure(c);
  411. }
  412. else {
  413. wc.x = ev->x;
  414. wc.y = ev->y;
  415. wc.width = ev->width;
  416. wc.height = ev->height;
  417. wc.border_width = ev->border_width;
  418. wc.sibling = ev->above;
  419. wc.stack_mode = ev->detail;
  420. XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
  421. }
  422. XSync(dpy, False);
  423. }
  424. void
  425. destroynotify(XEvent *e) {
  426. Client *c;
  427. XDestroyWindowEvent *ev = &e->xdestroywindow;
  428. if((c = getclient(ev->window)))
  429. unmanage(c);
  430. }
  431. void
  432. detach(Client *c) {
  433. if(c->prev)
  434. c->prev->next = c->next;
  435. if(c->next)
  436. c->next->prev = c->prev;
  437. if(c == clients)
  438. clients = c->next;
  439. c->next = c->prev = NULL;
  440. }
  441. void
  442. detachstack(Client *c) {
  443. Client **tc;
  444. for(tc = &stack; *tc && *tc != c; tc = &(*tc)->snext);
  445. *tc = c->snext;
  446. }
  447. void
  448. drawbar(void) {
  449. int i, x;
  450. Client *c;
  451. dc.x = 0;
  452. for(c = stack; c && !VISIBLE(c); c = c->snext);
  453. for(i = 0; i < LENGTH(tags); i++) {
  454. dc.w = TEXTW(tags[i]);
  455. if(tagset[seltags] & 1 << i) {
  456. drawtext(tags[i], dc.sel, isurgent(i));
  457. drawsquare(c && c->tags & 1 << i, isoccupied(i), isurgent(i), dc.sel);
  458. }
  459. else {
  460. drawtext(tags[i], dc.norm, isurgent(i));
  461. drawsquare(c && c->tags & 1 << i, isoccupied(i), isurgent(i), dc.norm);
  462. }
  463. dc.x += dc.w;
  464. }
  465. if(blw > 0) {
  466. dc.w = blw;
  467. drawtext(lt->symbol, dc.norm, domax);
  468. x = dc.x + dc.w;
  469. }
  470. else
  471. x = dc.x;
  472. dc.w = TEXTW(stext);
  473. dc.x = bw - dc.w;
  474. if(dc.x < x) {
  475. dc.x = x;
  476. dc.w = bw - x;
  477. }
  478. drawtext(stext, dc.norm, False);
  479. if((dc.w = dc.x - x) > bh) {
  480. dc.x = x;
  481. if(c) {
  482. drawtext(c->name, dc.sel, False);
  483. drawsquare(False, c->isfloating, False, dc.sel);
  484. }
  485. else
  486. drawtext(NULL, dc.norm, False);
  487. }
  488. XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
  489. XSync(dpy, False);
  490. }
  491. void
  492. drawsquare(Bool filled, Bool empty, Bool invert, ulong col[ColLast]) {
  493. int x;
  494. XGCValues gcv;
  495. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  496. gcv.foreground = col[invert ? ColBG : ColFG];
  497. XChangeGC(dpy, dc.gc, GCForeground, &gcv);
  498. x = (dc.font.ascent + dc.font.descent + 2) / 4;
  499. r.x = dc.x + 1;
  500. r.y = dc.y + 1;
  501. if(filled) {
  502. r.width = r.height = x + 1;
  503. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  504. }
  505. else if(empty) {
  506. r.width = r.height = x;
  507. XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  508. }
  509. }
  510. void
  511. drawtext(const char *text, ulong col[ColLast], Bool invert) {
  512. int x, y, w, h;
  513. uint len, olen;
  514. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  515. char buf[256];
  516. XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
  517. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  518. if(!text)
  519. return;
  520. olen = strlen(text);
  521. len = MIN(olen, sizeof buf);
  522. memcpy(buf, text, len);
  523. w = 0;
  524. h = dc.font.ascent + dc.font.descent;
  525. y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  526. x = dc.x + (h / 2);
  527. /* shorten text if necessary */
  528. for(; len && (w = textnw(buf, len)) > dc.w - h; len--);
  529. if(!len)
  530. return;
  531. if(len < olen) {
  532. if(len > 1)
  533. buf[len - 1] = '.';
  534. if(len > 2)
  535. buf[len - 2] = '.';
  536. if(len > 3)
  537. buf[len - 3] = '.';
  538. }
  539. XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
  540. if(dc.font.set)
  541. XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  542. else
  543. XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  544. }
  545. void
  546. enternotify(XEvent *e) {
  547. Client *c;
  548. XCrossingEvent *ev = &e->xcrossing;
  549. if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
  550. return;
  551. if((c = getclient(ev->window)))
  552. focus(c);
  553. else
  554. focus(NULL);
  555. }
  556. void
  557. eprint(const char *errstr, ...) {
  558. va_list ap;
  559. va_start(ap, errstr);
  560. vfprintf(stderr, errstr, ap);
  561. va_end(ap);
  562. exit(EXIT_FAILURE);
  563. }
  564. void
  565. expose(XEvent *e) {
  566. XExposeEvent *ev = &e->xexpose;
  567. if(ev->count == 0 && (ev->window == barwin))
  568. drawbar();
  569. }
  570. void
  571. focus(Client *c) {
  572. if(!c || (c && !VISIBLE(c)))
  573. for(c = stack; c && !VISIBLE(c); c = c->snext);
  574. if(sel && sel != c) {
  575. grabbuttons(sel, False);
  576. XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
  577. }
  578. if(c) {
  579. detachstack(c);
  580. attachstack(c);
  581. grabbuttons(c, True);
  582. }
  583. sel = c;
  584. if(c) {
  585. if(domax) {
  586. XMoveResizeWindow(dpy, c->win, wx, wy, ww - 2 * c->bw, wh - 2 * c->bw);
  587. c->ismax = True;
  588. }
  589. XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
  590. XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  591. }
  592. else
  593. XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
  594. drawbar();
  595. }
  596. void
  597. focusin(XEvent *e) { /* there are some broken focus acquiring clients */
  598. XFocusChangeEvent *ev = &e->xfocus;
  599. if(sel && ev->window != sel->win)
  600. XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
  601. }
  602. void
  603. focusnext(const void *arg) {
  604. Client *c;
  605. if(!sel)
  606. return;
  607. for(c = sel->next; c && !VISIBLE(c); c = c->next);
  608. if(!c)
  609. for(c = clients; c && !VISIBLE(c); c = c->next);
  610. if(c) {
  611. focus(c);
  612. restack();
  613. }
  614. }
  615. void
  616. focusprev(const void *arg) {
  617. Client *c;
  618. if(!sel)
  619. return;
  620. for(c = sel->prev; c && !VISIBLE(c); c = c->prev);
  621. if(!c) {
  622. for(c = clients; c && c->next; c = c->next);
  623. for(; c && !VISIBLE(c); c = c->prev);
  624. }
  625. if(c) {
  626. focus(c);
  627. restack();
  628. }
  629. }
  630. Client *
  631. getclient(Window w) {
  632. Client *c;
  633. for(c = clients; c && c->win != w; c = c->next);
  634. return c;
  635. }
  636. ulong
  637. getcolor(const char *colstr) {
  638. Colormap cmap = DefaultColormap(dpy, screen);
  639. XColor color;
  640. if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
  641. eprint("error, cannot allocate color '%s'\n", colstr);
  642. return color.pixel;
  643. }
  644. long
  645. getstate(Window w) {
  646. int format, status;
  647. long result = -1;
  648. unsigned char *p = NULL;
  649. ulong n, extra;
  650. Atom real;
  651. status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
  652. &real, &format, &n, &extra, (unsigned char **)&p);
  653. if(status != Success)
  654. return -1;
  655. if(n != 0)
  656. result = *p;
  657. XFree(p);
  658. return result;
  659. }
  660. Bool
  661. gettextprop(Window w, Atom atom, char *text, uint size) {
  662. char **list = NULL;
  663. int n;
  664. XTextProperty name;
  665. if(!text || size == 0)
  666. return False;
  667. text[0] = '\0';
  668. XGetTextProperty(dpy, w, &name, atom);
  669. if(!name.nitems)
  670. return False;
  671. if(name.encoding == XA_STRING)
  672. strncpy(text, (char *)name.value, size - 1);
  673. else {
  674. if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
  675. && n > 0 && *list) {
  676. strncpy(text, *list, size - 1);
  677. XFreeStringList(list);
  678. }
  679. }
  680. text[size - 1] = '\0';
  681. XFree(name.value);
  682. return True;
  683. }
  684. void
  685. grabbuttons(Client *c, Bool focused) {
  686. int i, j;
  687. uint buttons[] = { Button1, Button2, Button3 };
  688. uint modifiers[] = { MODKEY, MODKEY|LockMask, MODKEY|numlockmask,
  689. MODKEY|numlockmask|LockMask} ;
  690. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  691. if(focused)
  692. for(i = 0; i < LENGTH(buttons); i++)
  693. for(j = 0; j < LENGTH(modifiers); j++)
  694. XGrabButton(dpy, buttons[i], modifiers[j], c->win, False,
  695. BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  696. else
  697. XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
  698. BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  699. }
  700. void
  701. grabkeys(void) {
  702. uint i, j;
  703. KeyCode code;
  704. XModifierKeymap *modmap;
  705. /* init modifier map */
  706. modmap = XGetModifierMapping(dpy);
  707. for(i = 0; i < 8; i++)
  708. for(j = 0; j < modmap->max_keypermod; j++) {
  709. if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
  710. numlockmask = (1 << i);
  711. }
  712. XFreeModifiermap(modmap);
  713. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  714. for(i = 0; i < LENGTH(keys); i++) {
  715. code = XKeysymToKeycode(dpy, keys[i].keysym);
  716. XGrabKey(dpy, code, keys[i].mod, root, True,
  717. GrabModeAsync, GrabModeAsync);
  718. XGrabKey(dpy, code, keys[i].mod|LockMask, root, True,
  719. GrabModeAsync, GrabModeAsync);
  720. XGrabKey(dpy, code, keys[i].mod|numlockmask, root, True,
  721. GrabModeAsync, GrabModeAsync);
  722. XGrabKey(dpy, code, keys[i].mod|numlockmask|LockMask, root, True,
  723. GrabModeAsync, GrabModeAsync);
  724. }
  725. }
  726. void
  727. initfont(const char *fontstr) {
  728. char *def, **missing;
  729. int i, n;
  730. missing = NULL;
  731. if(dc.font.set)
  732. XFreeFontSet(dpy, dc.font.set);
  733. dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
  734. if(missing) {
  735. while(n--)
  736. fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
  737. XFreeStringList(missing);
  738. }
  739. if(dc.font.set) {
  740. XFontSetExtents *font_extents;
  741. XFontStruct **xfonts;
  742. char **font_names;
  743. dc.font.ascent = dc.font.descent = 0;
  744. font_extents = XExtentsOfFontSet(dc.font.set);
  745. n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
  746. for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
  747. dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
  748. dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
  749. xfonts++;
  750. }
  751. }
  752. else {
  753. if(dc.font.xfont)
  754. XFreeFont(dpy, dc.font.xfont);
  755. dc.font.xfont = NULL;
  756. if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
  757. && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
  758. eprint("error, cannot load font: '%s'\n", fontstr);
  759. dc.font.ascent = dc.font.xfont->ascent;
  760. dc.font.descent = dc.font.xfont->descent;
  761. }
  762. dc.font.height = dc.font.ascent + dc.font.descent;
  763. }
  764. Bool
  765. isoccupied(uint t) {
  766. Client *c;
  767. for(c = clients; c; c = c->next)
  768. if(c->tags & 1 << t)
  769. return True;
  770. return False;
  771. }
  772. Bool
  773. isprotodel(Client *c) {
  774. int i, n;
  775. Atom *protocols;
  776. Bool ret = False;
  777. if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
  778. for(i = 0; !ret && i < n; i++)
  779. if(protocols[i] == wmatom[WMDelete])
  780. ret = True;
  781. XFree(protocols);
  782. }
  783. return ret;
  784. }
  785. Bool
  786. isurgent(uint t) {
  787. Client *c;
  788. for(c = clients; c; c = c->next)
  789. if(c->isurgent && c->tags & 1 << t)
  790. return True;
  791. return False;
  792. }
  793. void
  794. keypress(XEvent *e) {
  795. uint i;
  796. KeySym keysym;
  797. XKeyEvent *ev;
  798. ev = &e->xkey;
  799. keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
  800. for(i = 0; i < LENGTH(keys); i++)
  801. if(keysym == keys[i].keysym
  802. && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state))
  803. {
  804. if(keys[i].func)
  805. keys[i].func(keys[i].arg);
  806. }
  807. }
  808. void
  809. killclient(const void *arg) {
  810. XEvent ev;
  811. if(!sel)
  812. return;
  813. if(isprotodel(sel)) {
  814. ev.type = ClientMessage;
  815. ev.xclient.window = sel->win;
  816. ev.xclient.message_type = wmatom[WMProtocols];
  817. ev.xclient.format = 32;
  818. ev.xclient.data.l[0] = wmatom[WMDelete];
  819. ev.xclient.data.l[1] = CurrentTime;
  820. XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
  821. }
  822. else
  823. XKillClient(dpy, sel->win);
  824. }
  825. void
  826. manage(Window w, XWindowAttributes *wa) {
  827. Client *c, *t = NULL;
  828. Status rettrans;
  829. Window trans;
  830. XWindowChanges wc;
  831. if(!(c = calloc(1, sizeof(Client))))
  832. eprint("fatal: could not calloc() %u bytes\n", sizeof(Client));
  833. c->win = w;
  834. /* geometry */
  835. c->x = wa->x;
  836. c->y = wa->y;
  837. c->w = wa->width;
  838. c->h = wa->height;
  839. c->oldbw = wa->border_width;
  840. if(c->w == sw && c->h == sh) {
  841. c->x = sx;
  842. c->y = sy;
  843. c->bw = wa->border_width;
  844. }
  845. else {
  846. if(c->x + c->w + 2 * c->bw > sx + sw)
  847. c->x = sx + sw - c->w - 2 * c->bw;
  848. if(c->y + c->h + 2 * c->bw > sy + sh)
  849. c->y = sy + sh - c->h - 2 * c->bw;
  850. c->x = MAX(c->x, sx);
  851. c->y = MAX(c->y, by == 0 ? bh : sy);
  852. c->bw = borderpx;
  853. }
  854. wc.border_width = c->bw;
  855. XConfigureWindow(dpy, w, CWBorderWidth, &wc);
  856. XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
  857. configure(c); /* propagates border_width, if size doesn't change */
  858. updatesizehints(c);
  859. XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
  860. grabbuttons(c, False);
  861. updatetitle(c);
  862. if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
  863. for(t = clients; t && t->win != trans; t = t->next);
  864. if(t)
  865. c->tags = t->tags;
  866. else
  867. applyrules(c);
  868. if(!c->isfloating)
  869. c->isfloating = (rettrans == Success) || c->isfixed;
  870. attach(c);
  871. attachstack(c);
  872. XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
  873. XMapWindow(dpy, c->win);
  874. setclientstate(c, NormalState);
  875. arrange();
  876. }
  877. void
  878. mappingnotify(XEvent *e) {
  879. XMappingEvent *ev = &e->xmapping;
  880. XRefreshKeyboardMapping(ev);
  881. if(ev->request == MappingKeyboard)
  882. grabkeys();
  883. }
  884. void
  885. maprequest(XEvent *e) {
  886. static XWindowAttributes wa;
  887. XMapRequestEvent *ev = &e->xmaprequest;
  888. if(!XGetWindowAttributes(dpy, ev->window, &wa))
  889. return;
  890. if(wa.override_redirect)
  891. return;
  892. if(!getclient(ev->window))
  893. manage(ev->window, &wa);
  894. }
  895. void
  896. movemouse(Client *c) {
  897. int x1, y1, ocx, ocy, di, nx, ny;
  898. uint dui;
  899. Window dummy;
  900. XEvent ev;
  901. restack();
  902. ocx = nx = c->x;
  903. ocy = ny = c->y;
  904. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  905. None, cursor[CurMove], CurrentTime) != GrabSuccess)
  906. return;
  907. XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  908. for(;;) {
  909. XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
  910. switch (ev.type) {
  911. case ButtonRelease:
  912. XUngrabPointer(dpy, CurrentTime);
  913. return;
  914. case ConfigureRequest:
  915. case Expose:
  916. case MapRequest:
  917. handler[ev.type](&ev);
  918. break;
  919. case MotionNotify:
  920. XSync(dpy, False);
  921. nx = ocx + (ev.xmotion.x - x1);
  922. ny = ocy + (ev.xmotion.y - y1);
  923. if(snap && nx >= wx && nx <= wx + ww
  924. && ny >= wy && ny <= wy + wh) {
  925. if(abs(wx - nx) < snap)
  926. nx = wx;
  927. else if(abs((wx + ww) - (nx + c->w + 2 * c->bw)) < snap)
  928. nx = wx + ww - c->w - 2 * c->bw;
  929. if(abs(wy - ny) < snap)
  930. ny = wy;
  931. else if(abs((wy + wh) - (ny + c->h + 2 * c->bw)) < snap)
  932. ny = wy + wh - c->h - 2 * c->bw;
  933. if(!c->isfloating && lt->arrange && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
  934. togglefloating(NULL);
  935. }
  936. if(!lt->arrange || c->isfloating)
  937. resize(c, nx, ny, c->w, c->h, False);
  938. break;
  939. }
  940. }
  941. }
  942. Client *
  943. nexttiled(Client *c) {
  944. for(; c && (c->isfloating || !VISIBLE(c)); c = c->next);
  945. return c;
  946. }
  947. void
  948. propertynotify(XEvent *e) {
  949. Client *c;
  950. Window trans;
  951. XPropertyEvent *ev = &e->xproperty;
  952. if(ev->state == PropertyDelete)
  953. return; /* ignore */
  954. if((c = getclient(ev->window))) {
  955. switch (ev->atom) {
  956. default: break;
  957. case XA_WM_TRANSIENT_FOR:
  958. XGetTransientForHint(dpy, c->win, &trans);
  959. if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
  960. arrange();
  961. break;
  962. case XA_WM_NORMAL_HINTS:
  963. updatesizehints(c);
  964. break;
  965. case XA_WM_HINTS:
  966. updatewmhints(c);
  967. drawbar();
  968. break;
  969. }
  970. if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
  971. updatetitle(c);
  972. if(c == sel)
  973. drawbar();
  974. }
  975. }
  976. }
  977. void
  978. quit(const void *arg) {
  979. readin = running = False;
  980. }
  981. void
  982. resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
  983. XWindowChanges wc;
  984. if(sizehints) {
  985. /* set minimum possible */
  986. w = MAX(1, w);
  987. h = MAX(1, h);
  988. /* temporarily remove base dimensions */
  989. w -= c->basew;
  990. h -= c->baseh;
  991. /* adjust for aspect limits */
  992. if(c->minax != c->maxax && c->minay != c->maxay
  993. && c->minax > 0 && c->maxax > 0 && c->minay > 0 && c->maxay > 0) {
  994. if(w * c->maxay > h * c->maxax)
  995. w = h * c->maxax / c->maxay;
  996. else if(w * c->minay < h * c->minax)
  997. h = w * c->minay / c->minax;
  998. }
  999. /* adjust for increment value */
  1000. if(c->incw)
  1001. w -= w % c->incw;
  1002. if(c->inch)
  1003. h -= h % c->inch;
  1004. /* restore base dimensions */
  1005. w += c->basew;
  1006. h += c->baseh;
  1007. w = MAX(w, c->minw);
  1008. h = MAX(h, c->minh);
  1009. if (c->maxw)
  1010. w = MIN(w, c->maxw);
  1011. if (c->maxh)
  1012. h = MIN(h, c->maxh);
  1013. }
  1014. if(w <= 0 || h <= 0)
  1015. return;
  1016. if(x > sx + sw)
  1017. x = sw - w - 2 * c->bw;
  1018. if(y > sy + sh)
  1019. y = sh - h - 2 * c->bw;
  1020. if(x + w + 2 * c->bw < sx)
  1021. x = sx;
  1022. if(y + h + 2 * c->bw < sy)
  1023. y = sy;
  1024. if(h < bh)
  1025. h = bh;
  1026. if(w < bh)
  1027. w = bh;
  1028. if(c->x != x || c->y != y || c->w != w || c->h != h || c->isbanned || c->ismax) {
  1029. c->isbanned = c->ismax = False;
  1030. c->x = wc.x = x;
  1031. c->y = wc.y = y;
  1032. c->w = wc.width = w;
  1033. c->h = wc.height = h;
  1034. wc.border_width = c->bw;
  1035. XConfigureWindow(dpy, c->win,
  1036. CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
  1037. configure(c);
  1038. XSync(dpy, False);
  1039. }
  1040. }
  1041. void
  1042. resizemouse(Client *c) {
  1043. int ocx, ocy;
  1044. int nw, nh;
  1045. XEvent ev;
  1046. restack();
  1047. ocx = c->x;
  1048. ocy = c->y;
  1049. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  1050. None, cursor[CurResize], CurrentTime) != GrabSuccess)
  1051. return;
  1052. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
  1053. for(;;) {
  1054. XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask , &ev);
  1055. switch(ev.type) {
  1056. case ButtonRelease:
  1057. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
  1058. c->w + c->bw - 1, c->h + c->bw - 1);
  1059. XUngrabPointer(dpy, CurrentTime);
  1060. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1061. return;
  1062. case ConfigureRequest:
  1063. case Expose:
  1064. case MapRequest:
  1065. handler[ev.type](&ev);
  1066. break;
  1067. case MotionNotify:
  1068. XSync(dpy, False);
  1069. nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
  1070. nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
  1071. if(snap && nw >= wx && nw <= wx + ww
  1072. && nh >= wy && nh <= wy + wh) {
  1073. if(!c->isfloating && lt->arrange
  1074. && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
  1075. togglefloating(NULL);
  1076. }
  1077. if(!lt->arrange || c->isfloating)
  1078. resize(c, c->x, c->y, nw, nh, True);
  1079. break;
  1080. }
  1081. }
  1082. }
  1083. void
  1084. restack(void) {
  1085. Client *c;
  1086. XEvent ev;
  1087. XWindowChanges wc;
  1088. drawbar();
  1089. if(!sel)
  1090. return;
  1091. if(domax || sel->isfloating || !lt->arrange)
  1092. XRaiseWindow(dpy, sel->win);
  1093. if(!domax && lt->arrange) {
  1094. wc.stack_mode = Below;
  1095. wc.sibling = barwin;
  1096. for(c = stack; c; c = c->snext)
  1097. if(!c->isfloating && VISIBLE(c)) {
  1098. XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
  1099. wc.sibling = c->win;
  1100. }
  1101. }
  1102. XSync(dpy, False);
  1103. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1104. }
  1105. void
  1106. run(void) {
  1107. char *p;
  1108. char sbuf[sizeof stext];
  1109. fd_set rd;
  1110. int r, xfd;
  1111. uint len, offset;
  1112. XEvent ev;
  1113. /* main event loop, also reads status text from stdin */
  1114. XSync(dpy, False);
  1115. xfd = ConnectionNumber(dpy);
  1116. readin = True;
  1117. offset = 0;
  1118. len = sizeof stext - 1;
  1119. sbuf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
  1120. while(running) {
  1121. FD_ZERO(&rd);
  1122. if(readin)
  1123. FD_SET(STDIN_FILENO, &rd);
  1124. FD_SET(xfd, &rd);
  1125. if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
  1126. if(errno == EINTR)
  1127. continue;
  1128. eprint("select failed\n");
  1129. }
  1130. if(FD_ISSET(STDIN_FILENO, &rd)) {
  1131. switch((r = read(STDIN_FILENO, sbuf + offset, len - offset))) {
  1132. case -1:
  1133. strncpy(stext, strerror(errno), len);
  1134. readin = False;
  1135. break;
  1136. case 0:
  1137. strncpy(stext, "EOF", 4);
  1138. readin = False;
  1139. break;
  1140. default:
  1141. for(p = sbuf + offset; r > 0; p++, r--, offset++)
  1142. if(*p == '\n' || *p == '\0') {
  1143. *p = '\0';
  1144. strncpy(stext, sbuf, len);
  1145. p += r - 1; /* p is sbuf + offset + r - 1 */
  1146. for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
  1147. offset = r;
  1148. if(r)
  1149. memmove(sbuf, p - r + 1, r);
  1150. break;
  1151. }
  1152. break;
  1153. }
  1154. drawbar();
  1155. }
  1156. while(XPending(dpy)) {
  1157. XNextEvent(dpy, &ev);
  1158. if(handler[ev.type])
  1159. (handler[ev.type])(&ev); /* call handler */
  1160. }
  1161. }
  1162. }
  1163. void
  1164. scan(void) {
  1165. uint i, num;
  1166. Window *wins, d1, d2;
  1167. XWindowAttributes wa;
  1168. wins = NULL;
  1169. if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
  1170. for(i = 0; i < num; i++) {
  1171. if(!XGetWindowAttributes(dpy, wins[i], &wa)
  1172. || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
  1173. continue;
  1174. if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
  1175. manage(wins[i], &wa);
  1176. }
  1177. for(i = 0; i < num; i++) { /* now the transients */
  1178. if(!XGetWindowAttributes(dpy, wins[i], &wa))
  1179. continue;
  1180. if(XGetTransientForHint(dpy, wins[i], &d1)
  1181. && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
  1182. manage(wins[i], &wa);
  1183. }
  1184. }
  1185. if(wins)
  1186. XFree(wins);
  1187. }
  1188. void
  1189. setclientstate(Client *c, long state) {
  1190. long data[] = {state, None};
  1191. XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
  1192. PropModeReplace, (unsigned char *)data, 2);
  1193. }
  1194. /* arg > 1.0 will set mfact absolutly */
  1195. void
  1196. setmfact(const void *arg) {
  1197. double d = *((double*) arg);
  1198. if(!d || lt->arrange != tile)
  1199. return;
  1200. d = d < 1.0 ? d + mfact : d - 1.0;
  1201. if(d < 0.1 || d > 0.9)
  1202. return;
  1203. mfact = d;
  1204. arrange();
  1205. }
  1206. void
  1207. setup(void) {
  1208. uint i, w;
  1209. XSetWindowAttributes wa;
  1210. /* init screen */
  1211. screen = DefaultScreen(dpy);
  1212. root = RootWindow(dpy, screen);
  1213. initfont(FONT);
  1214. sx = 0;
  1215. sy = 0;
  1216. sw = DisplayWidth(dpy, screen);
  1217. sh = DisplayHeight(dpy, screen);
  1218. bh = dc.font.height + 2;
  1219. updategeom();
  1220. /* init atoms */
  1221. wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
  1222. wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
  1223. wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
  1224. wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
  1225. netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
  1226. netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
  1227. /* init cursors */
  1228. wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
  1229. cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
  1230. cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
  1231. /* init appearance */
  1232. dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
  1233. dc.norm[ColBG] = getcolor(NORMBGCOLOR);
  1234. dc.norm[ColFG] = getcolor(NORMFGCOLOR);
  1235. dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
  1236. dc.sel[ColBG] = getcolor(SELBGCOLOR);
  1237. dc.sel[ColFG] = getcolor(SELFGCOLOR);
  1238. initfont(FONT);
  1239. dc.h = bh;
  1240. dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
  1241. dc.gc = XCreateGC(dpy, root, 0, 0);
  1242. XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
  1243. if(!dc.font.set)
  1244. XSetFont(dpy, dc.gc, dc.font.xfont->fid);
  1245. /* init bar */
  1246. for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
  1247. w = TEXTW(layouts[i].symbol);
  1248. blw = MAX(blw, w);
  1249. }
  1250. wa.override_redirect = 1;
  1251. wa.background_pixmap = ParentRelative;
  1252. wa.event_mask = ButtonPressMask|ExposureMask;
  1253. barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
  1254. CopyFromParent, DefaultVisual(dpy, screen),
  1255. CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
  1256. XDefineCursor(dpy, barwin, cursor[CurNormal]);
  1257. XMapRaised(dpy, barwin);
  1258. strcpy(stext, "dwm-"VERSION);
  1259. drawbar();
  1260. /* EWMH support per view */
  1261. XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
  1262. PropModeReplace, (unsigned char *) netatom, NetLast);
  1263. /* select for events */
  1264. wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
  1265. |EnterWindowMask|LeaveWindowMask|StructureNotifyMask;
  1266. XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
  1267. XSelectInput(dpy, root, wa.event_mask);
  1268. /* grab keys */
  1269. grabkeys();
  1270. }
  1271. void
  1272. spawn(const void *arg) {
  1273. static char *shell = NULL;
  1274. if(!shell && !(shell = getenv("SHELL")))
  1275. shell = "/bin/sh";
  1276. /* The double-fork construct avoids zombie processes and keeps the code
  1277. * clean from stupid signal handlers. */
  1278. if(fork() == 0) {
  1279. if(fork() == 0) {
  1280. if(dpy)
  1281. close(ConnectionNumber(dpy));
  1282. setsid();
  1283. execl(shell, shell, "-c", (char *)arg, (char *)NULL);
  1284. fprintf(stderr, "dwm: execl '%s -c %s'", shell, (char *)arg);
  1285. perror(" failed");
  1286. }
  1287. exit(0);
  1288. }
  1289. wait(0);
  1290. }
  1291. void
  1292. tag(const void *arg) {
  1293. if(sel && *(int *)arg & TAGMASK) {
  1294. sel->tags = *(int *)arg & TAGMASK;
  1295. arrange();
  1296. }
  1297. }
  1298. uint
  1299. textnw(const char *text, uint len) {
  1300. XRectangle r;
  1301. if(dc.font.set) {
  1302. XmbTextExtents(dc.font.set, text, len, NULL, &r);
  1303. return r.width;
  1304. }
  1305. return XTextWidth(dc.font.xfont, text, len);
  1306. }
  1307. void
  1308. tile(void) {
  1309. int x, y, h, w, mw;
  1310. uint i, n;
  1311. Client *c;
  1312. for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next), n++);
  1313. if(n == 0)
  1314. return;
  1315. /* master */
  1316. c = nexttiled(clients);
  1317. mw = mfact * ww;
  1318. resize(c, wx, wy, ((n == 1) ? ww : mw) - 2 * c->bw, wh - 2 * c->bw, resizehints);
  1319. if(--n == 0)
  1320. return;
  1321. /* tile stack */
  1322. x = (wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : ww - mw;
  1323. y = wy;
  1324. w = (wx + mw > c->x + c->w) ? wx + ww - x : ww - mw;
  1325. h = wh / n;
  1326. if(h < bh)
  1327. h = wh;
  1328. for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
  1329. resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
  1330. ? (wy + wh) - y : h) - 2 * c->bw, resizehints);
  1331. if(h != wh)
  1332. y = c->y + c->h + 2 * c->bw;
  1333. }
  1334. }
  1335. void
  1336. togglebar(const void *arg) {
  1337. showbar = !showbar;
  1338. updategeom();
  1339. updatebar();
  1340. arrange();
  1341. }
  1342. void
  1343. togglefloating(const void *arg) {
  1344. if(!sel)
  1345. return;
  1346. sel->isfloating = !sel->isfloating;
  1347. if(sel->isfloating)
  1348. resize(sel, sel->x, sel->y, sel->w, sel->h, True);
  1349. arrange();
  1350. }
  1351. void
  1352. togglelayout(const void *arg) {
  1353. uint i;
  1354. if(!arg) {
  1355. if(++lt == &layouts[LENGTH(layouts)])
  1356. lt = &layouts[0];
  1357. }
  1358. else {
  1359. for(i = 0; i < LENGTH(layouts); i++)
  1360. if(!strcmp((char *)arg, layouts[i].symbol))
  1361. break;
  1362. if(i == LENGTH(layouts))
  1363. return;
  1364. lt = &layouts[i];
  1365. }
  1366. if(sel)
  1367. arrange();
  1368. else
  1369. drawbar();
  1370. }
  1371. void
  1372. togglemax(const void *arg) {
  1373. domax = !domax;
  1374. arrange();
  1375. }
  1376. void
  1377. toggletag(const void *arg) {
  1378. if(sel && (sel->tags ^ ((*(int *)arg) & TAGMASK))) {
  1379. sel->tags ^= (*(int *)arg) & TAGMASK;
  1380. arrange();
  1381. }
  1382. }
  1383. void
  1384. toggleview(const void *arg) {
  1385. if((tagset[seltags] ^ ((*(int *)arg) & TAGMASK))) {
  1386. tagset[seltags] ^= (*(int *)arg) & TAGMASK;
  1387. arrange();
  1388. }
  1389. }
  1390. void
  1391. unmanage(Client *c) {
  1392. XWindowChanges wc;
  1393. wc.border_width = c->oldbw;
  1394. /* The server grab construct avoids race conditions. */
  1395. XGrabServer(dpy);
  1396. XSetErrorHandler(xerrordummy);
  1397. XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
  1398. detach(c);
  1399. detachstack(c);
  1400. if(sel == c)
  1401. focus(NULL);
  1402. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  1403. setclientstate(c, WithdrawnState);
  1404. free(c);
  1405. XSync(dpy, False);
  1406. XSetErrorHandler(xerror);
  1407. XUngrabServer(dpy);
  1408. arrange();
  1409. }
  1410. void
  1411. unmapnotify(XEvent *e) {
  1412. Client *c;
  1413. XUnmapEvent *ev = &e->xunmap;
  1414. if((c = getclient(ev->window)))
  1415. unmanage(c);
  1416. }
  1417. void
  1418. updatebar(void) {
  1419. if(dc.drawable != 0)
  1420. XFreePixmap(dpy, dc.drawable);
  1421. dc.drawable = XCreatePixmap(dpy, root, bw, bh, DefaultDepth(dpy, screen));
  1422. XMoveResizeWindow(dpy, barwin, bx, by, bw, bh);
  1423. }
  1424. void
  1425. updategeom(void) {
  1426. int i;
  1427. #ifdef XINERAMA
  1428. XineramaScreenInfo *info = NULL;
  1429. /* window area geometry */
  1430. if(XineramaIsActive(dpy)) {
  1431. info = XineramaQueryScreens(dpy, &i);
  1432. wx = info[0].x_org;
  1433. wy = showbar && topbar ? info[0].y_org + bh : info[0].y_org;
  1434. ww = info[0].width;
  1435. wh = showbar ? info[0].height - bh : info[0].height;
  1436. XFree(info);
  1437. }
  1438. else
  1439. #endif
  1440. {
  1441. wx = sx;
  1442. wy = showbar && topbar ? sy + bh : sy;
  1443. ww = sw;
  1444. wh = showbar ? sh - bh : sh;
  1445. }
  1446. /* bar geometry */
  1447. bx = wx;
  1448. by = showbar ? (topbar ? wy - bh : wy + wh) : -bh;
  1449. bw = ww;
  1450. }
  1451. void
  1452. updatesizehints(Client *c) {
  1453. long msize;
  1454. XSizeHints size;
  1455. if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
  1456. size.flags = PSize;
  1457. c->flags = size.flags;
  1458. if(c->flags & PBaseSize) {
  1459. c->basew = size.base_width;
  1460. c->baseh = size.base_height;
  1461. }
  1462. else if(c->flags & PMinSize) {
  1463. c->basew = size.min_width;
  1464. c->baseh = size.min_height;
  1465. }
  1466. else
  1467. c->basew = c->baseh = 0;
  1468. if(c->flags & PResizeInc) {
  1469. c->incw = size.width_inc;
  1470. c->inch = size.height_inc;
  1471. }
  1472. else
  1473. c->incw = c->inch = 0;
  1474. if(c->flags & PMaxSize) {
  1475. c->maxw = size.max_width;
  1476. c->maxh = size.max_height;
  1477. }
  1478. else
  1479. c->maxw = c->maxh = 0;
  1480. if(c->flags & PMinSize) {
  1481. c->minw = size.min_width;
  1482. c->minh = size.min_height;
  1483. }
  1484. else if(c->flags & PBaseSize) {
  1485. c->minw = size.base_width;
  1486. c->minh = size.base_height;
  1487. }
  1488. else
  1489. c->minw = c->minh = 0;
  1490. if(c->flags & PAspect) {
  1491. c->minax = size.min_aspect.x;
  1492. c->maxax = size.max_aspect.x;
  1493. c->minay = size.min_aspect.y;
  1494. c->maxay = size.max_aspect.y;
  1495. }
  1496. else
  1497. c->minax = c->maxax = c->minay = c->maxay = 0;
  1498. c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
  1499. && c->maxw == c->minw && c->maxh == c->minh);
  1500. }
  1501. void
  1502. updatetitle(Client *c) {
  1503. if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
  1504. gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
  1505. }
  1506. void
  1507. updatewmhints(Client *c) {
  1508. XWMHints *wmh;
  1509. if((wmh = XGetWMHints(dpy, c->win))) {
  1510. if(c == sel)
  1511. sel->isurgent = False;
  1512. else
  1513. c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
  1514. XFree(wmh);
  1515. }
  1516. }
  1517. void
  1518. view(const void *arg) {
  1519. if(*(int *)arg & TAGMASK) {
  1520. seltags ^= 1; /* toggle sel tagset */
  1521. tagset[seltags] = *(int *)arg & TAGMASK;
  1522. arrange();
  1523. }
  1524. }
  1525. void
  1526. viewprevtag(const void *arg) {
  1527. seltags ^= 1; /* toggle sel tagset */
  1528. arrange();
  1529. }
  1530. /* There's no way to check accesses to destroyed windows, thus those cases are
  1531. * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
  1532. * default error handler, which may call exit. */
  1533. int
  1534. xerror(Display *dpy, XErrorEvent *ee) {
  1535. if(ee->error_code == BadWindow
  1536. || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
  1537. || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
  1538. || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
  1539. || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
  1540. || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
  1541. || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
  1542. || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
  1543. || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
  1544. return 0;
  1545. fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
  1546. ee->request_code, ee->error_code);
  1547. return xerrorxlib(dpy, ee); /* may call exit */
  1548. }
  1549. int
  1550. xerrordummy(Display *dpy, XErrorEvent *ee) {
  1551. return 0;
  1552. }
  1553. /* Startup Error handler to check if another window manager
  1554. * is already running. */
  1555. int
  1556. xerrorstart(Display *dpy, XErrorEvent *ee) {
  1557. otherwm = True;
  1558. return -1;
  1559. }
  1560. void
  1561. zoom(const void *arg) {
  1562. Client *c = sel;
  1563. if(!lt->arrange || sel->isfloating)
  1564. return;
  1565. if(c == nexttiled(clients))
  1566. if(!c || !(c = nexttiled(c->next)))
  1567. return;
  1568. detach(c);
  1569. attach(c);
  1570. focus(c);
  1571. arrange();
  1572. }
  1573. int
  1574. main(int argc, char *argv[]) {
  1575. if(argc == 2 && !strcmp("-v", argv[1]))
  1576. eprint("dwm-"VERSION", © 2006-2008 dwm engineers, see LICENSE for details\n");
  1577. else if(argc != 1)
  1578. eprint("usage: dwm [-v]\n");
  1579. setlocale(LC_CTYPE, "");
  1580. if(!(dpy = XOpenDisplay(0)))
  1581. eprint("dwm: cannot open display\n");
  1582. checkotherwm();
  1583. setup();
  1584. scan();
  1585. run();
  1586. cleanup();
  1587. XCloseDisplay(dpy);
  1588. return 0;
  1589. }