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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 a bit array to indicate the tags of a
  20. * 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. /* enums */
  56. enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
  57. enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
  58. enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
  59. enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
  60. /* typedefs */
  61. typedef unsigned int uint;
  62. typedef unsigned long ulong;
  63. typedef struct Client Client;
  64. struct Client {
  65. char name[256];
  66. int x, y, w, h;
  67. int basew, baseh, incw, inch, maxw, maxh, minw, minh;
  68. float mina, maxa;
  69. int bw, oldbw;
  70. Bool isbanned, isfixed, isfloating, ismoved, isurgent;
  71. uint tags;
  72. Client *next;
  73. Client *snext;
  74. Window win;
  75. };
  76. typedef struct {
  77. int x, y, w, h;
  78. ulong norm[ColLast];
  79. ulong sel[ColLast];
  80. Drawable drawable;
  81. GC gc;
  82. struct {
  83. int ascent;
  84. int descent;
  85. int height;
  86. XFontSet set;
  87. XFontStruct *xfont;
  88. } font;
  89. } DC; /* draw context */
  90. typedef union {
  91. int i;
  92. uint ui;
  93. float f;
  94. void *v;
  95. } Arg;
  96. typedef struct {
  97. uint mod;
  98. KeySym keysym;
  99. void (*func)(const Arg *);
  100. const Arg arg;
  101. } Key;
  102. typedef struct {
  103. const char *symbol;
  104. void (*arrange)(void);
  105. } Layout;
  106. typedef struct {
  107. const char *class;
  108. const char *instance;
  109. const char *title;
  110. uint tags;
  111. Bool isfloating;
  112. } Rule;
  113. /* function declarations */
  114. static void applyrules(Client *c);
  115. static void arrange(void);
  116. static void attach(Client *c);
  117. static void attachstack(Client *c);
  118. static void buttonpress(XEvent *e);
  119. static void checkotherwm(void);
  120. static void cleanup(void);
  121. static void configure(Client *c);
  122. static void configurenotify(XEvent *e);
  123. static void configurerequest(XEvent *e);
  124. static void destroynotify(XEvent *e);
  125. static void detach(Client *c);
  126. static void detachstack(Client *c);
  127. static void drawbar(void);
  128. static void drawsquare(Bool filled, Bool empty, Bool invert, ulong col[ColLast]);
  129. static void drawtext(const char *text, ulong col[ColLast], Bool invert);
  130. static void enternotify(XEvent *e);
  131. static void eprint(const char *errstr, ...);
  132. static void expose(XEvent *e);
  133. static void focus(Client *c);
  134. static void focusin(XEvent *e);
  135. static void focusstack(const Arg *arg);
  136. static Client *getclient(Window w);
  137. static ulong getcolor(const char *colstr);
  138. static long getstate(Window w);
  139. static Bool gettextprop(Window w, Atom atom, char *text, uint size);
  140. static void grabbuttons(Client *c, Bool focused);
  141. static void grabkeys(void);
  142. static void initfont(const char *fontstr);
  143. static Bool isoccupied(uint t);
  144. static Bool isprotodel(Client *c);
  145. static Bool isurgent(uint t);
  146. static void keypress(XEvent *e);
  147. static void killclient(const Arg *arg);
  148. static void manage(Window w, XWindowAttributes *wa);
  149. static void mappingnotify(XEvent *e);
  150. static void maprequest(XEvent *e);
  151. static void movemouse(Client *c);
  152. static Client *nexttiled(Client *c);
  153. static void propertynotify(XEvent *e);
  154. static void quit(const Arg *arg);
  155. static void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
  156. static void resizemouse(Client *c);
  157. static void restack(void);
  158. static void run(void);
  159. static void scan(void);
  160. static void setclientstate(Client *c, long state);
  161. static void setmfact(const Arg *arg);
  162. static void setup(void);
  163. static void spawn(const Arg *arg);
  164. static void tag(const Arg *arg);
  165. static int textnw(const char *text, uint len);
  166. static void tile(void);
  167. static void togglebar(const Arg *arg);
  168. static void togglefloating(const Arg *arg);
  169. static void togglelayout(const Arg *arg);
  170. static void togglemax(const Arg *arg);
  171. static void toggletag(const Arg *arg);
  172. static void toggleview(const Arg *arg);
  173. static void unmanage(Client *c);
  174. static void unmapnotify(XEvent *e);
  175. static void updatebar(void);
  176. static void updategeom(void);
  177. static void updatesizehints(Client *c);
  178. static void updatetitle(Client *c);
  179. static void updatewmhints(Client *c);
  180. static void view(const Arg *arg);
  181. static int xerror(Display *dpy, XErrorEvent *ee);
  182. static int xerrordummy(Display *dpy, XErrorEvent *ee);
  183. static int xerrorstart(Display *dpy, XErrorEvent *ee);
  184. static void zoom(const Arg *arg);
  185. /* variables */
  186. static char stext[256];
  187. static int screen, sx, sy, sw, sh;
  188. static int by, bh, blw, wx, wy, ww, wh;
  189. static uint seltags = 0;
  190. static int (*xerrorxlib)(Display *, XErrorEvent *);
  191. static uint numlockmask = 0;
  192. static void (*handler[LASTEvent]) (XEvent *) = {
  193. [ButtonPress] = buttonpress,
  194. [ConfigureRequest] = configurerequest,
  195. [ConfigureNotify] = configurenotify,
  196. [DestroyNotify] = destroynotify,
  197. [EnterNotify] = enternotify,
  198. [Expose] = expose,
  199. [FocusIn] = focusin,
  200. [KeyPress] = keypress,
  201. [MappingNotify] = mappingnotify,
  202. [MapRequest] = maprequest,
  203. [PropertyNotify] = propertynotify,
  204. [UnmapNotify] = unmapnotify
  205. };
  206. static Atom wmatom[WMLast], netatom[NetLast];
  207. static Bool ismax = False;
  208. static Bool otherwm, readin;
  209. static Bool running = True;
  210. static uint tagset[] = {1, 1}; /* after start, first tag is selected */
  211. static Client *clients = NULL;
  212. static Client *sel = NULL;
  213. static Client *stack = NULL;
  214. static Cursor cursor[CurLast];
  215. static Display *dpy;
  216. static DC dc = {0};
  217. static Window root, barwin;
  218. /* configuration, allows nested code to access above variables */
  219. #include "config.h"
  220. static Layout *lt = layouts;
  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(c->tags & tagset[seltags]) { /* is visible */
  252. if(ismax && !c->isfixed) {
  253. XMoveResizeWindow(dpy, c->win, wx, wy, ww - 2 * c->bw, wh - 2 * c->bw);
  254. c->ismoved = True;
  255. }
  256. else if(!lt->arrange || c->isfloating)
  257. resize(c, c->x, c->y, c->w, c->h, True);
  258. c->isbanned = False;
  259. }
  260. else if(!c->isbanned) {
  261. XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  262. c->isbanned = c->ismoved = True;
  263. }
  264. focus(NULL);
  265. if(lt->arrange && !ismax)
  266. lt->arrange();
  267. restack();
  268. }
  269. void
  270. attach(Client *c) {
  271. c->next = clients;
  272. clients = c;
  273. }
  274. void
  275. attachstack(Client *c) {
  276. c->snext = stack;
  277. stack = c;
  278. }
  279. void
  280. buttonpress(XEvent *e) {
  281. uint i, mask;
  282. int x;
  283. Client *c;
  284. XButtonPressedEvent *ev = &e->xbutton;
  285. if(ev->window == barwin) {
  286. x = 0;
  287. for(i = 0; i < LENGTH(tags); i++) {
  288. x += TEXTW(tags[i]);
  289. if(ev->x < x) {
  290. mask = 1 << i;
  291. if(ev->button == Button1) {
  292. if(ev->state & MODKEY)
  293. tag((Arg*)&mask);
  294. else
  295. view((Arg*)&mask);
  296. }
  297. else if(ev->button == Button3) {
  298. if(ev->state & MODKEY)
  299. toggletag((Arg*)&mask);
  300. else
  301. toggleview((Arg*)&mask);
  302. }
  303. return;
  304. }
  305. }
  306. if(ev->x < x + blw) {
  307. if(ev->button == Button1)
  308. togglelayout(NULL);
  309. else if(ev->button == Button3)
  310. togglemax(NULL);
  311. }
  312. }
  313. else if((c = getclient(ev->window))) {
  314. focus(c);
  315. if(CLEANMASK(ev->state) != MODKEY || (ismax && !c->isfixed))
  316. return;
  317. if(ev->button == Button1)
  318. movemouse(c);
  319. else if(ev->button == Button2)
  320. togglefloating(NULL);
  321. else if(ev->button == Button3 && !c->isfixed)
  322. resizemouse(c);
  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. XSetErrorHandler(NULL);
  335. xerrorxlib = XSetErrorHandler(xerror);
  336. XSync(dpy, False);
  337. }
  338. void
  339. cleanup(void) {
  340. Arg a = {.i = ~0};
  341. Layout foo = { "", NULL };
  342. close(STDIN_FILENO);
  343. view(&a);
  344. lt = &foo;
  345. while(stack)
  346. unmanage(stack);
  347. if(dc.font.set)
  348. XFreeFontSet(dpy, dc.font.set);
  349. else
  350. XFreeFont(dpy, dc.font.xfont);
  351. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  352. XFreePixmap(dpy, dc.drawable);
  353. XFreeGC(dpy, dc.gc);
  354. XFreeCursor(dpy, cursor[CurNormal]);
  355. XFreeCursor(dpy, cursor[CurResize]);
  356. XFreeCursor(dpy, cursor[CurMove]);
  357. XDestroyWindow(dpy, barwin);
  358. XSync(dpy, False);
  359. XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
  360. }
  361. void
  362. configure(Client *c) {
  363. XConfigureEvent ce;
  364. ce.type = ConfigureNotify;
  365. ce.display = dpy;
  366. ce.event = c->win;
  367. ce.window = c->win;
  368. ce.x = c->x;
  369. ce.y = c->y;
  370. ce.width = c->w;
  371. ce.height = c->h;
  372. ce.border_width = c->bw;
  373. ce.above = None;
  374. ce.override_redirect = False;
  375. XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
  376. }
  377. void
  378. configurenotify(XEvent *e) {
  379. XConfigureEvent *ev = &e->xconfigure;
  380. if(ev->window == root && (ev->width != sw || ev->height != sh)) {
  381. sw = ev->width;
  382. sh = ev->height;
  383. updategeom();
  384. updatebar();
  385. arrange();
  386. }
  387. }
  388. void
  389. configurerequest(XEvent *e) {
  390. Client *c;
  391. XConfigureRequestEvent *ev = &e->xconfigurerequest;
  392. XWindowChanges wc;
  393. if((c = getclient(ev->window))) {
  394. if(ev->value_mask & CWBorderWidth)
  395. c->bw = ev->border_width;
  396. if(ismax && !c->isbanned && !c->isfixed)
  397. XMoveResizeWindow(dpy, c->win, wx, wy, ww - 2 * c->bw, wh + 2 * c->bw);
  398. else if(c->isfloating || !lt->arrange) {
  399. if(ev->value_mask & CWX)
  400. c->x = sx + ev->x;
  401. if(ev->value_mask & CWY)
  402. c->y = sy + ev->y;
  403. if(ev->value_mask & CWWidth)
  404. c->w = ev->width;
  405. if(ev->value_mask & CWHeight)
  406. c->h = ev->height;
  407. if((c->x - sx + c->w) > sw && c->isfloating)
  408. c->x = sx + (sw / 2 - c->w / 2); /* center in x direction */
  409. if((c->y - sy + c->h) > sh && c->isfloating)
  410. c->y = sy + (sh / 2 - c->h / 2); /* center in y direction */
  411. if((ev->value_mask & (CWX|CWY))
  412. && !(ev->value_mask & (CWWidth|CWHeight)))
  413. configure(c);
  414. if(!c->isbanned)
  415. XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
  416. }
  417. else
  418. configure(c);
  419. }
  420. else {
  421. wc.x = ev->x;
  422. wc.y = ev->y;
  423. wc.width = ev->width;
  424. wc.height = ev->height;
  425. wc.border_width = ev->border_width;
  426. wc.sibling = ev->above;
  427. wc.stack_mode = ev->detail;
  428. XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
  429. }
  430. XSync(dpy, False);
  431. }
  432. void
  433. destroynotify(XEvent *e) {
  434. Client *c;
  435. XDestroyWindowEvent *ev = &e->xdestroywindow;
  436. if((c = getclient(ev->window)))
  437. unmanage(c);
  438. }
  439. void
  440. detach(Client *c) {
  441. Client *i;
  442. if (c != clients) {
  443. for(i = clients; i->next != c; i = i->next);
  444. i->next = c->next;
  445. }
  446. else {
  447. clients = c->next;
  448. }
  449. c->next = NULL;
  450. }
  451. void
  452. detachstack(Client *c) {
  453. Client **tc;
  454. for(tc = &stack; *tc && *tc != c; tc = &(*tc)->snext);
  455. *tc = c->snext;
  456. }
  457. void
  458. drawbar(void) {
  459. int i, x;
  460. Client *c;
  461. dc.x = 0;
  462. for(c = stack; c && c->isbanned; c = c->snext);
  463. for(i = 0; i < LENGTH(tags); i++) {
  464. dc.w = TEXTW(tags[i]);
  465. if(tagset[seltags] & 1 << i) {
  466. drawtext(tags[i], dc.sel, isurgent(i));
  467. drawsquare(c && c->tags & 1 << i, isoccupied(i), isurgent(i), dc.sel);
  468. }
  469. else {
  470. drawtext(tags[i], dc.norm, isurgent(i));
  471. drawsquare(c && c->tags & 1 << i, isoccupied(i), isurgent(i), dc.norm);
  472. }
  473. dc.x += dc.w;
  474. }
  475. if(blw > 0) {
  476. dc.w = blw;
  477. drawtext(lt->symbol, dc.norm, ismax);
  478. x = dc.x + dc.w;
  479. }
  480. else
  481. x = dc.x;
  482. dc.w = TEXTW(stext);
  483. dc.x = ww - dc.w;
  484. if(dc.x < x) {
  485. dc.x = x;
  486. dc.w = ww - x;
  487. }
  488. drawtext(stext, dc.norm, False);
  489. if((dc.w = dc.x - x) > bh) {
  490. dc.x = x;
  491. if(c) {
  492. drawtext(c->name, dc.sel, False);
  493. drawsquare(c->isfixed, c->isfloating, False, dc.sel);
  494. }
  495. else
  496. drawtext(NULL, dc.norm, False);
  497. }
  498. XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, ww, bh, 0, 0);
  499. XSync(dpy, False);
  500. }
  501. void
  502. drawsquare(Bool filled, Bool empty, Bool invert, ulong col[ColLast]) {
  503. int x;
  504. XGCValues gcv;
  505. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  506. gcv.foreground = col[invert ? ColBG : ColFG];
  507. XChangeGC(dpy, dc.gc, GCForeground, &gcv);
  508. x = (dc.font.ascent + dc.font.descent + 2) / 4;
  509. r.x = dc.x + 1;
  510. r.y = dc.y + 1;
  511. if(filled) {
  512. r.width = r.height = x + 1;
  513. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  514. }
  515. else if(empty) {
  516. r.width = r.height = x;
  517. XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  518. }
  519. }
  520. void
  521. drawtext(const char *text, ulong col[ColLast], Bool invert) {
  522. int i, x, y, h, len, olen;
  523. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  524. char buf[256];
  525. XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
  526. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  527. if(!text)
  528. return;
  529. olen = strlen(text);
  530. len = MIN(olen, sizeof buf);
  531. memcpy(buf, text, len);
  532. h = dc.font.ascent + dc.font.descent;
  533. y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  534. x = dc.x + (h / 2);
  535. /* shorten text if necessary */
  536. for(; len && (i = textnw(buf, len)) > dc.w - h; len--);
  537. if(!len)
  538. return;
  539. if(len < olen)
  540. for(i = len; i && i > len - 3; buf[--i] = '.');
  541. XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
  542. if(dc.font.set)
  543. XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  544. else
  545. XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  546. }
  547. void
  548. enternotify(XEvent *e) {
  549. Client *c;
  550. XCrossingEvent *ev = &e->xcrossing;
  551. if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
  552. return;
  553. if((c = getclient(ev->window)))
  554. focus(c);
  555. else
  556. focus(NULL);
  557. }
  558. void
  559. eprint(const char *errstr, ...) {
  560. va_list ap;
  561. va_start(ap, errstr);
  562. vfprintf(stderr, errstr, ap);
  563. va_end(ap);
  564. exit(EXIT_FAILURE);
  565. }
  566. void
  567. expose(XEvent *e) {
  568. XExposeEvent *ev = &e->xexpose;
  569. if(ev->count == 0 && (ev->window == barwin))
  570. drawbar();
  571. }
  572. void
  573. focus(Client *c) {
  574. if(!c || c->isbanned)
  575. for(c = stack; c && c->isbanned; c = c->snext);
  576. if(sel && sel != c) {
  577. grabbuttons(sel, False);
  578. XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
  579. }
  580. if(c) {
  581. detachstack(c);
  582. attachstack(c);
  583. grabbuttons(c, True);
  584. XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
  585. XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  586. }
  587. else
  588. XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
  589. sel = c;
  590. drawbar();
  591. }
  592. void
  593. focusin(XEvent *e) { /* there are some broken focus acquiring clients */
  594. XFocusChangeEvent *ev = &e->xfocus;
  595. if(sel && ev->window != sel->win)
  596. XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
  597. }
  598. void
  599. focusstack(const Arg *arg) {
  600. Client *c = NULL, *i;
  601. if(!sel)
  602. return;
  603. if (arg->i > 0) {
  604. for(c = sel->next; c && c->isbanned; c = c->next);
  605. if(!c)
  606. for(c = clients; c && c->isbanned; c = c->next);
  607. }
  608. else {
  609. for(i = clients; i != sel; i = i->next)
  610. if (!i->isbanned)
  611. c = i;
  612. if(!c)
  613. for(; i; i = i->next)
  614. if (!i->isbanned)
  615. c = i;
  616. }
  617. if(c) {
  618. focus(c);
  619. restack();
  620. }
  621. }
  622. Client *
  623. getclient(Window w) {
  624. Client *c;
  625. for(c = clients; c && c->win != w; c = c->next);
  626. return c;
  627. }
  628. ulong
  629. getcolor(const char *colstr) {
  630. Colormap cmap = DefaultColormap(dpy, screen);
  631. XColor color;
  632. if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
  633. eprint("error, cannot allocate color '%s'\n", colstr);
  634. return color.pixel;
  635. }
  636. long
  637. getstate(Window w) {
  638. int format, status;
  639. long result = -1;
  640. unsigned char *p = NULL;
  641. ulong n, extra;
  642. Atom real;
  643. status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
  644. &real, &format, &n, &extra, (unsigned char **)&p);
  645. if(status != Success)
  646. return -1;
  647. if(n != 0)
  648. result = *p;
  649. XFree(p);
  650. return result;
  651. }
  652. Bool
  653. gettextprop(Window w, Atom atom, char *text, uint size) {
  654. char **list = NULL;
  655. int n;
  656. XTextProperty name;
  657. if(!text || size == 0)
  658. return False;
  659. text[0] = '\0';
  660. XGetTextProperty(dpy, w, &name, atom);
  661. if(!name.nitems)
  662. return False;
  663. if(name.encoding == XA_STRING)
  664. strncpy(text, (char *)name.value, size - 1);
  665. else {
  666. if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
  667. && n > 0 && *list) {
  668. strncpy(text, *list, size - 1);
  669. XFreeStringList(list);
  670. }
  671. }
  672. text[size - 1] = '\0';
  673. XFree(name.value);
  674. return True;
  675. }
  676. void
  677. grabbuttons(Client *c, Bool focused) {
  678. int i, j;
  679. uint buttons[] = { Button1, Button2, Button3 };
  680. uint modifiers[] = { MODKEY, MODKEY|LockMask, MODKEY|numlockmask, MODKEY|numlockmask|LockMask };
  681. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  682. if(focused)
  683. for(i = 0; i < LENGTH(buttons); i++)
  684. for(j = 0; j < LENGTH(modifiers); j++)
  685. XGrabButton(dpy, buttons[i], modifiers[j], c->win, False,
  686. BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  687. else
  688. XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
  689. BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  690. }
  691. void
  692. grabkeys(void) {
  693. uint i, j;
  694. KeyCode code;
  695. XModifierKeymap *modmap;
  696. /* init modifier map */
  697. modmap = XGetModifierMapping(dpy);
  698. for(i = 0; i < 8; i++)
  699. for(j = 0; j < modmap->max_keypermod; j++) {
  700. if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
  701. numlockmask = (1 << i);
  702. }
  703. XFreeModifiermap(modmap);
  704. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  705. for(i = 0; i < LENGTH(keys); i++) {
  706. code = XKeysymToKeycode(dpy, keys[i].keysym);
  707. XGrabKey(dpy, code, keys[i].mod, root, True,
  708. GrabModeAsync, GrabModeAsync);
  709. XGrabKey(dpy, code, keys[i].mod|LockMask, root, True,
  710. GrabModeAsync, GrabModeAsync);
  711. XGrabKey(dpy, code, keys[i].mod|numlockmask, root, True,
  712. GrabModeAsync, GrabModeAsync);
  713. XGrabKey(dpy, code, keys[i].mod|numlockmask|LockMask, root, True,
  714. GrabModeAsync, GrabModeAsync);
  715. }
  716. }
  717. void
  718. initfont(const char *fontstr) {
  719. char *def, **missing;
  720. int i, n;
  721. missing = NULL;
  722. if(dc.font.set)
  723. XFreeFontSet(dpy, dc.font.set);
  724. dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
  725. if(missing) {
  726. while(n--)
  727. fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
  728. XFreeStringList(missing);
  729. }
  730. if(dc.font.set) {
  731. XFontSetExtents *font_extents;
  732. XFontStruct **xfonts;
  733. char **font_names;
  734. dc.font.ascent = dc.font.descent = 0;
  735. font_extents = XExtentsOfFontSet(dc.font.set);
  736. n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
  737. for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
  738. dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
  739. dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
  740. xfonts++;
  741. }
  742. }
  743. else {
  744. if(dc.font.xfont)
  745. XFreeFont(dpy, dc.font.xfont);
  746. dc.font.xfont = NULL;
  747. if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
  748. && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
  749. eprint("error, cannot load font: '%s'\n", fontstr);
  750. dc.font.ascent = dc.font.xfont->ascent;
  751. dc.font.descent = dc.font.xfont->descent;
  752. }
  753. dc.font.height = dc.font.ascent + dc.font.descent;
  754. }
  755. Bool
  756. isoccupied(uint t) {
  757. Client *c;
  758. for(c = clients; c; c = c->next)
  759. if(c->tags & 1 << t)
  760. return True;
  761. return False;
  762. }
  763. Bool
  764. isprotodel(Client *c) {
  765. int i, n;
  766. Atom *protocols;
  767. Bool ret = False;
  768. if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
  769. for(i = 0; !ret && i < n; i++)
  770. if(protocols[i] == wmatom[WMDelete])
  771. ret = True;
  772. XFree(protocols);
  773. }
  774. return ret;
  775. }
  776. Bool
  777. isurgent(uint t) {
  778. Client *c;
  779. for(c = clients; c; c = c->next)
  780. if(c->isurgent && c->tags & 1 << t)
  781. return True;
  782. return False;
  783. }
  784. void
  785. keypress(XEvent *e) {
  786. uint i;
  787. KeySym keysym;
  788. XKeyEvent *ev;
  789. ev = &e->xkey;
  790. keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
  791. for(i = 0; i < LENGTH(keys); i++)
  792. if(keysym == keys[i].keysym
  793. && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
  794. && keys[i].func)
  795. keys[i].func(&(keys[i].arg));
  796. }
  797. void
  798. killclient(const Arg *arg) {
  799. XEvent ev;
  800. if(!sel)
  801. return;
  802. if(isprotodel(sel)) {
  803. ev.type = ClientMessage;
  804. ev.xclient.window = sel->win;
  805. ev.xclient.message_type = wmatom[WMProtocols];
  806. ev.xclient.format = 32;
  807. ev.xclient.data.l[0] = wmatom[WMDelete];
  808. ev.xclient.data.l[1] = CurrentTime;
  809. XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
  810. }
  811. else
  812. XKillClient(dpy, sel->win);
  813. }
  814. void
  815. manage(Window w, XWindowAttributes *wa) {
  816. Client *c, *t = NULL;
  817. Status rettrans;
  818. Window trans;
  819. XWindowChanges wc;
  820. if(!(c = calloc(1, sizeof(Client))))
  821. eprint("fatal: could not calloc() %u bytes\n", sizeof(Client));
  822. c->win = w;
  823. /* geometry */
  824. c->x = wa->x;
  825. c->y = wa->y;
  826. c->w = wa->width;
  827. c->h = wa->height;
  828. c->oldbw = wa->border_width;
  829. if(c->w == sw && c->h == sh) {
  830. c->x = sx;
  831. c->y = sy;
  832. c->bw = wa->border_width;
  833. }
  834. else {
  835. if(c->x + c->w + 2 * c->bw > sx + sw)
  836. c->x = sx + sw - c->w - 2 * c->bw;
  837. if(c->y + c->h + 2 * c->bw > sy + sh)
  838. c->y = sy + sh - c->h - 2 * c->bw;
  839. c->x = MAX(c->x, sx);
  840. c->y = MAX(c->y, by == 0 ? bh : sy);
  841. c->bw = borderpx;
  842. }
  843. wc.border_width = c->bw;
  844. XConfigureWindow(dpy, w, CWBorderWidth, &wc);
  845. XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
  846. configure(c); /* propagates border_width, if size doesn't change */
  847. updatesizehints(c);
  848. XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
  849. grabbuttons(c, False);
  850. updatetitle(c);
  851. if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
  852. for(t = clients; t && t->win != trans; t = t->next);
  853. if(t)
  854. c->tags = t->tags;
  855. else
  856. applyrules(c);
  857. if(!c->isfloating)
  858. c->isfloating = (rettrans == Success) || c->isfixed;
  859. if(c->isfloating)
  860. XRaiseWindow(dpy, c->win);
  861. attach(c);
  862. attachstack(c);
  863. XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
  864. XMapWindow(dpy, c->win);
  865. setclientstate(c, NormalState);
  866. arrange();
  867. }
  868. void
  869. mappingnotify(XEvent *e) {
  870. XMappingEvent *ev = &e->xmapping;
  871. XRefreshKeyboardMapping(ev);
  872. if(ev->request == MappingKeyboard)
  873. grabkeys();
  874. }
  875. void
  876. maprequest(XEvent *e) {
  877. static XWindowAttributes wa;
  878. XMapRequestEvent *ev = &e->xmaprequest;
  879. if(!XGetWindowAttributes(dpy, ev->window, &wa))
  880. return;
  881. if(wa.override_redirect)
  882. return;
  883. if(!getclient(ev->window))
  884. manage(ev->window, &wa);
  885. }
  886. void
  887. movemouse(Client *c) {
  888. int x1, y1, ocx, ocy, di, nx, ny;
  889. uint dui;
  890. Window dummy;
  891. XEvent ev;
  892. restack();
  893. ocx = nx = c->x;
  894. ocy = ny = c->y;
  895. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  896. None, cursor[CurMove], CurrentTime) != GrabSuccess)
  897. return;
  898. XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
  899. for(;;) {
  900. XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
  901. switch (ev.type) {
  902. case ButtonRelease:
  903. XUngrabPointer(dpy, CurrentTime);
  904. return;
  905. case ConfigureRequest:
  906. case Expose:
  907. case MapRequest:
  908. handler[ev.type](&ev);
  909. break;
  910. case MotionNotify:
  911. XSync(dpy, False);
  912. nx = ocx + (ev.xmotion.x - x1);
  913. ny = ocy + (ev.xmotion.y - y1);
  914. if(snap && nx >= wx && nx <= wx + ww
  915. && ny >= wy && ny <= wy + wh) {
  916. if(abs(wx - nx) < snap)
  917. nx = wx;
  918. else if(abs((wx + ww) - (nx + c->w + 2 * c->bw)) < snap)
  919. nx = wx + ww - c->w - 2 * c->bw;
  920. if(abs(wy - ny) < snap)
  921. ny = wy;
  922. else if(abs((wy + wh) - (ny + c->h + 2 * c->bw)) < snap)
  923. ny = wy + wh - c->h - 2 * c->bw;
  924. if(!c->isfloating && lt->arrange && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
  925. togglefloating(NULL);
  926. }
  927. if(!lt->arrange || c->isfloating)
  928. resize(c, nx, ny, c->w, c->h, False);
  929. break;
  930. }
  931. }
  932. }
  933. Client *
  934. nexttiled(Client *c) {
  935. for(; c && (c->isfloating || c->isbanned); c = c->next);
  936. return c;
  937. }
  938. void
  939. propertynotify(XEvent *e) {
  940. Client *c;
  941. Window trans;
  942. XPropertyEvent *ev = &e->xproperty;
  943. if(ev->state == PropertyDelete)
  944. return; /* ignore */
  945. if((c = getclient(ev->window))) {
  946. switch (ev->atom) {
  947. default: break;
  948. case XA_WM_TRANSIENT_FOR:
  949. XGetTransientForHint(dpy, c->win, &trans);
  950. if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
  951. arrange();
  952. break;
  953. case XA_WM_NORMAL_HINTS:
  954. updatesizehints(c);
  955. break;
  956. case XA_WM_HINTS:
  957. updatewmhints(c);
  958. drawbar();
  959. break;
  960. }
  961. if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
  962. updatetitle(c);
  963. if(c == sel)
  964. drawbar();
  965. }
  966. }
  967. }
  968. void
  969. quit(const Arg *arg) {
  970. readin = running = False;
  971. }
  972. void
  973. resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
  974. XWindowChanges wc;
  975. if(sizehints) {
  976. /* set minimum possible */
  977. w = MAX(1, w);
  978. h = MAX(1, h);
  979. /* temporarily remove base dimensions */
  980. w -= c->basew;
  981. h -= c->baseh;
  982. /* adjust for aspect limits */
  983. if(c->mina > 0 && c->maxa > 0) {
  984. if(c->maxa < (float) w/h)
  985. w = h * c->maxa;
  986. else if(c->mina > (float) h/w)
  987. h = w * c->mina;
  988. }
  989. /* adjust for increment value */
  990. if(c->incw)
  991. w -= w % c->incw;
  992. if(c->inch)
  993. h -= h % c->inch;
  994. /* restore base dimensions */
  995. w += c->basew;
  996. h += c->baseh;
  997. w = MAX(w, c->minw);
  998. h = MAX(h, c->minh);
  999. if (c->maxw)
  1000. w = MIN(w, c->maxw);
  1001. if (c->maxh)
  1002. h = MIN(h, c->maxh);
  1003. }
  1004. if(w <= 0 || h <= 0)
  1005. return;
  1006. if(x > sx + sw)
  1007. x = sw - w - 2 * c->bw;
  1008. if(y > sy + sh)
  1009. y = sh - h - 2 * c->bw;
  1010. if(x + w + 2 * c->bw < sx)
  1011. x = sx;
  1012. if(y + h + 2 * c->bw < sy)
  1013. y = sy;
  1014. if(h < bh)
  1015. h = bh;
  1016. if(w < bh)
  1017. w = bh;
  1018. if(c->x != x || c->y != y || c->w != w || c->h != h || c->ismoved) {
  1019. c->ismoved = False;
  1020. c->x = wc.x = x;
  1021. c->y = wc.y = y;
  1022. c->w = wc.width = w;
  1023. c->h = wc.height = h;
  1024. wc.border_width = c->bw;
  1025. XConfigureWindow(dpy, c->win,
  1026. CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
  1027. configure(c);
  1028. XSync(dpy, False);
  1029. }
  1030. }
  1031. void
  1032. resizemouse(Client *c) {
  1033. int ocx, ocy;
  1034. int nw, nh;
  1035. XEvent ev;
  1036. restack();
  1037. ocx = c->x;
  1038. ocy = c->y;
  1039. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  1040. None, cursor[CurResize], CurrentTime) != GrabSuccess)
  1041. return;
  1042. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
  1043. for(;;) {
  1044. XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask , &ev);
  1045. switch(ev.type) {
  1046. case ButtonRelease:
  1047. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0,
  1048. c->w + c->bw - 1, c->h + c->bw - 1);
  1049. XUngrabPointer(dpy, CurrentTime);
  1050. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1051. return;
  1052. case ConfigureRequest:
  1053. case Expose:
  1054. case MapRequest:
  1055. handler[ev.type](&ev);
  1056. break;
  1057. case MotionNotify:
  1058. XSync(dpy, False);
  1059. nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
  1060. nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
  1061. if(snap && nw >= wx && nw <= wx + ww
  1062. && nh >= wy && nh <= wy + wh) {
  1063. if(!c->isfloating && lt->arrange
  1064. && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
  1065. togglefloating(NULL);
  1066. }
  1067. if(!lt->arrange || c->isfloating)
  1068. resize(c, c->x, c->y, nw, nh, True);
  1069. break;
  1070. }
  1071. }
  1072. }
  1073. void
  1074. restack(void) {
  1075. Client *c;
  1076. XEvent ev;
  1077. XWindowChanges wc;
  1078. drawbar();
  1079. if(!sel)
  1080. return;
  1081. if(ismax || sel->isfloating || !lt->arrange)
  1082. XRaiseWindow(dpy, sel->win);
  1083. if(!ismax && lt->arrange) {
  1084. wc.stack_mode = Below;
  1085. wc.sibling = barwin;
  1086. for(c = stack; c; c = c->snext)
  1087. if(!c->isfloating && !c->isbanned) {
  1088. XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
  1089. wc.sibling = c->win;
  1090. }
  1091. }
  1092. XSync(dpy, False);
  1093. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1094. }
  1095. void
  1096. run(void) {
  1097. char *p;
  1098. char sbuf[sizeof stext];
  1099. fd_set rd;
  1100. int r, xfd;
  1101. uint len, offset;
  1102. XEvent ev;
  1103. /* main event loop, also reads status text from stdin */
  1104. XSync(dpy, False);
  1105. xfd = ConnectionNumber(dpy);
  1106. readin = True;
  1107. offset = 0;
  1108. len = sizeof stext - 1;
  1109. sbuf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
  1110. while(running) {
  1111. FD_ZERO(&rd);
  1112. if(readin)
  1113. FD_SET(STDIN_FILENO, &rd);
  1114. FD_SET(xfd, &rd);
  1115. if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
  1116. if(errno == EINTR)
  1117. continue;
  1118. eprint("select failed\n");
  1119. }
  1120. if(FD_ISSET(STDIN_FILENO, &rd)) {
  1121. switch((r = read(STDIN_FILENO, sbuf + offset, len - offset))) {
  1122. case -1:
  1123. strncpy(stext, strerror(errno), len);
  1124. readin = False;
  1125. break;
  1126. case 0:
  1127. strncpy(stext, "EOF", 4);
  1128. readin = False;
  1129. break;
  1130. default:
  1131. for(p = sbuf + offset; r > 0; p++, r--, offset++)
  1132. if(*p == '\n' || *p == '\0') {
  1133. *p = '\0';
  1134. strncpy(stext, sbuf, len);
  1135. p += r - 1; /* p is sbuf + offset + r - 1 */
  1136. for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
  1137. offset = r;
  1138. if(r)
  1139. memmove(sbuf, p - r + 1, r);
  1140. break;
  1141. }
  1142. break;
  1143. }
  1144. drawbar();
  1145. }
  1146. while(XPending(dpy)) {
  1147. XNextEvent(dpy, &ev);
  1148. if(handler[ev.type])
  1149. (handler[ev.type])(&ev); /* call handler */
  1150. }
  1151. }
  1152. }
  1153. void
  1154. scan(void) {
  1155. uint i, num;
  1156. Window *wins, d1, d2;
  1157. XWindowAttributes wa;
  1158. wins = NULL;
  1159. if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
  1160. for(i = 0; i < num; i++) {
  1161. if(!XGetWindowAttributes(dpy, wins[i], &wa)
  1162. || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
  1163. continue;
  1164. if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
  1165. manage(wins[i], &wa);
  1166. }
  1167. for(i = 0; i < num; i++) { /* now the transients */
  1168. if(!XGetWindowAttributes(dpy, wins[i], &wa))
  1169. continue;
  1170. if(XGetTransientForHint(dpy, wins[i], &d1)
  1171. && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
  1172. manage(wins[i], &wa);
  1173. }
  1174. }
  1175. if(wins)
  1176. XFree(wins);
  1177. }
  1178. void
  1179. setclientstate(Client *c, long state) {
  1180. long data[] = {state, None};
  1181. XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
  1182. PropModeReplace, (unsigned char *)data, 2);
  1183. }
  1184. /* arg > 1.0 will set mfact absolutly */
  1185. void
  1186. setmfact(const Arg *arg) {
  1187. float f;
  1188. if(!arg || !lt->arrange)
  1189. return;
  1190. f = arg->f < 1.0 ? arg->f + mfact : arg->f - 1.0;
  1191. if(f < 0.1 || f > 0.9)
  1192. return;
  1193. mfact = f;
  1194. arrange();
  1195. }
  1196. void
  1197. setup(void) {
  1198. uint i;
  1199. int w;
  1200. XSetWindowAttributes wa;
  1201. /* init screen */
  1202. screen = DefaultScreen(dpy);
  1203. root = RootWindow(dpy, screen);
  1204. initfont(FONT);
  1205. sx = 0;
  1206. sy = 0;
  1207. sw = DisplayWidth(dpy, screen);
  1208. sh = DisplayHeight(dpy, screen);
  1209. bh = dc.font.height + 2;
  1210. updategeom();
  1211. /* init atoms */
  1212. wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
  1213. wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
  1214. wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
  1215. wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
  1216. netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
  1217. netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
  1218. /* init cursors */
  1219. wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
  1220. cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
  1221. cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
  1222. /* init appearance */
  1223. dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
  1224. dc.norm[ColBG] = getcolor(NORMBGCOLOR);
  1225. dc.norm[ColFG] = getcolor(NORMFGCOLOR);
  1226. dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
  1227. dc.sel[ColBG] = getcolor(SELBGCOLOR);
  1228. dc.sel[ColFG] = getcolor(SELFGCOLOR);
  1229. initfont(FONT);
  1230. dc.h = bh;
  1231. dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
  1232. dc.gc = XCreateGC(dpy, root, 0, 0);
  1233. XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
  1234. if(!dc.font.set)
  1235. XSetFont(dpy, dc.gc, dc.font.xfont->fid);
  1236. /* init bar */
  1237. for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
  1238. w = TEXTW(layouts[i].symbol);
  1239. blw = MAX(blw, w);
  1240. }
  1241. wa.override_redirect = 1;
  1242. wa.background_pixmap = ParentRelative;
  1243. wa.event_mask = ButtonPressMask|ExposureMask;
  1244. barwin = XCreateWindow(dpy, root, wx, by, ww, bh, 0, DefaultDepth(dpy, screen),
  1245. CopyFromParent, DefaultVisual(dpy, screen),
  1246. CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
  1247. XDefineCursor(dpy, barwin, cursor[CurNormal]);
  1248. XMapRaised(dpy, barwin);
  1249. strcpy(stext, "dwm-"VERSION);
  1250. drawbar();
  1251. /* EWMH support per view */
  1252. XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
  1253. PropModeReplace, (unsigned char *) netatom, NetLast);
  1254. /* select for events */
  1255. wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
  1256. |EnterWindowMask|LeaveWindowMask|StructureNotifyMask;
  1257. XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
  1258. XSelectInput(dpy, root, wa.event_mask);
  1259. /* grab keys */
  1260. grabkeys();
  1261. }
  1262. void
  1263. spawn(const Arg *arg) {
  1264. /* The double-fork construct avoids zombie processes and keeps the code
  1265. * clean from stupid signal handlers. */
  1266. if(fork() == 0) {
  1267. if(fork() == 0) {
  1268. if(dpy)
  1269. close(ConnectionNumber(dpy));
  1270. setsid();
  1271. execvp(((char **)arg->v)[0], (char **)arg->v);
  1272. fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
  1273. perror(" failed");
  1274. }
  1275. exit(0);
  1276. }
  1277. wait(0);
  1278. }
  1279. void
  1280. tag(const Arg *arg) {
  1281. if(sel && arg->ui & TAGMASK) {
  1282. sel->tags = arg->ui & TAGMASK;
  1283. arrange();
  1284. }
  1285. }
  1286. int
  1287. textnw(const char *text, uint len) {
  1288. XRectangle r;
  1289. if(dc.font.set) {
  1290. XmbTextExtents(dc.font.set, text, len, NULL, &r);
  1291. return r.width;
  1292. }
  1293. return XTextWidth(dc.font.xfont, text, len);
  1294. }
  1295. void
  1296. tile(void) {
  1297. int x, y, h, w, mw;
  1298. uint i, n;
  1299. Client *c;
  1300. for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next), n++);
  1301. if(n == 0)
  1302. return;
  1303. /* master */
  1304. c = nexttiled(clients);
  1305. mw = mfact * ww;
  1306. resize(c, wx, wy, (n == 1 ? ww : mw) - 2 * c->bw, wh - 2 * c->bw, resizehints);
  1307. if(--n == 0)
  1308. return;
  1309. /* tile stack */
  1310. x = (wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : wx + mw;
  1311. y = wy;
  1312. w = (wx + mw > c->x + c->w) ? wx + ww - x : ww - mw;
  1313. h = wh / n;
  1314. if(h < bh)
  1315. h = wh;
  1316. for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
  1317. resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
  1318. ? (wy + wh) - y : h) - 2 * c->bw, resizehints);
  1319. if(h != wh)
  1320. y = c->y + c->h + 2 * c->bw;
  1321. }
  1322. }
  1323. void
  1324. togglebar(const Arg *arg) {
  1325. showbar = !showbar;
  1326. updategeom();
  1327. updatebar();
  1328. arrange();
  1329. }
  1330. void
  1331. togglefloating(const Arg *arg) {
  1332. if(!sel)
  1333. return;
  1334. sel->isfloating = !sel->isfloating || sel->isfixed;
  1335. if(sel->isfloating)
  1336. resize(sel, sel->x, sel->y, sel->w, sel->h, True);
  1337. arrange();
  1338. }
  1339. void
  1340. togglelayout(const Arg *arg) {
  1341. if(arg->v)
  1342. lt = (Layout *)arg->v;
  1343. else if(++lt == &layouts[LENGTH(layouts)])
  1344. lt = &layouts[0];
  1345. if(sel)
  1346. arrange();
  1347. else
  1348. drawbar();
  1349. }
  1350. void
  1351. togglemax(const Arg *arg) {
  1352. ismax = !ismax;
  1353. arrange();
  1354. }
  1355. void
  1356. toggletag(const Arg *arg) {
  1357. if(sel && (sel->tags ^= (arg->ui & TAGMASK)))
  1358. arrange();
  1359. }
  1360. void
  1361. toggleview(const Arg *arg) {
  1362. if((tagset[seltags] ^= (arg->ui & TAGMASK)))
  1363. arrange();
  1364. }
  1365. void
  1366. unmanage(Client *c) {
  1367. XWindowChanges wc;
  1368. wc.border_width = c->oldbw;
  1369. /* The server grab construct avoids race conditions. */
  1370. XGrabServer(dpy);
  1371. XSetErrorHandler(xerrordummy);
  1372. XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
  1373. detach(c);
  1374. detachstack(c);
  1375. if(sel == c)
  1376. focus(NULL);
  1377. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  1378. setclientstate(c, WithdrawnState);
  1379. free(c);
  1380. XSync(dpy, False);
  1381. XSetErrorHandler(xerror);
  1382. XUngrabServer(dpy);
  1383. arrange();
  1384. }
  1385. void
  1386. unmapnotify(XEvent *e) {
  1387. Client *c;
  1388. XUnmapEvent *ev = &e->xunmap;
  1389. if((c = getclient(ev->window)))
  1390. unmanage(c);
  1391. }
  1392. void
  1393. updatebar(void) {
  1394. if(dc.drawable != 0)
  1395. XFreePixmap(dpy, dc.drawable);
  1396. dc.drawable = XCreatePixmap(dpy, root, ww, bh, DefaultDepth(dpy, screen));
  1397. XMoveResizeWindow(dpy, barwin, wx, by, ww, bh);
  1398. }
  1399. void
  1400. updategeom(void) {
  1401. #ifdef XINERAMA
  1402. int i;
  1403. XineramaScreenInfo *info = NULL;
  1404. /* window area geometry */
  1405. if(XineramaIsActive(dpy)) {
  1406. info = XineramaQueryScreens(dpy, &i);
  1407. wx = info[0].x_org;
  1408. wy = showbar && topbar ? info[0].y_org + bh : info[0].y_org;
  1409. ww = info[0].width;
  1410. wh = showbar ? info[0].height - bh : info[0].height;
  1411. XFree(info);
  1412. }
  1413. else
  1414. #endif
  1415. {
  1416. wx = sx;
  1417. wy = showbar && topbar ? sy + bh : sy;
  1418. ww = sw;
  1419. wh = showbar ? sh - bh : sh;
  1420. }
  1421. /* bar position */
  1422. by = showbar ? (topbar ? wy - bh : wy + wh) : -bh;
  1423. }
  1424. void
  1425. updatesizehints(Client *c) {
  1426. long msize;
  1427. XSizeHints size;
  1428. XGetWMNormalHints(dpy, c->win, &size, &msize);
  1429. if(size.flags & PBaseSize) {
  1430. c->basew = size.base_width;
  1431. c->baseh = size.base_height;
  1432. }
  1433. else if(size.flags & PMinSize) {
  1434. c->basew = size.min_width;
  1435. c->baseh = size.min_height;
  1436. }
  1437. else
  1438. c->basew = c->baseh = 0;
  1439. if(size.flags & PResizeInc) {
  1440. c->incw = size.width_inc;
  1441. c->inch = size.height_inc;
  1442. }
  1443. else
  1444. c->incw = c->inch = 0;
  1445. if(size.flags & PMaxSize) {
  1446. c->maxw = size.max_width;
  1447. c->maxh = size.max_height;
  1448. }
  1449. else
  1450. c->maxw = c->maxh = 0;
  1451. if(size.flags & PMinSize) {
  1452. c->minw = size.min_width;
  1453. c->minh = size.min_height;
  1454. }
  1455. else if(size.flags & PBaseSize) {
  1456. c->minw = size.base_width;
  1457. c->minh = size.base_height;
  1458. }
  1459. else
  1460. c->minw = c->minh = 0;
  1461. if(size.flags & PAspect) {
  1462. c->mina = (float)size.min_aspect.y / (float)size.min_aspect.x;
  1463. c->maxa = (float)size.max_aspect.x / (float)size.max_aspect.y;
  1464. }
  1465. else
  1466. c->maxa = c->mina = 0.0;
  1467. c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
  1468. && c->maxw == c->minw && c->maxh == c->minh);
  1469. }
  1470. void
  1471. updatetitle(Client *c) {
  1472. if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
  1473. gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
  1474. }
  1475. void
  1476. updatewmhints(Client *c) {
  1477. XWMHints *wmh;
  1478. if((wmh = XGetWMHints(dpy, c->win))) {
  1479. if(c == sel)
  1480. sel->isurgent = False;
  1481. else
  1482. c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
  1483. XFree(wmh);
  1484. }
  1485. }
  1486. void
  1487. view(const Arg *arg) {
  1488. seltags ^= 1; /* toggle sel tagset */
  1489. if(arg && (arg->ui & TAGMASK))
  1490. tagset[seltags] = arg->i & TAGMASK;
  1491. arrange();
  1492. }
  1493. /* There's no way to check accesses to destroyed windows, thus those cases are
  1494. * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
  1495. * default error handler, which may call exit. */
  1496. int
  1497. xerror(Display *dpy, XErrorEvent *ee) {
  1498. if(ee->error_code == BadWindow
  1499. || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
  1500. || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
  1501. || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
  1502. || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
  1503. || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
  1504. || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
  1505. || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
  1506. || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
  1507. return 0;
  1508. fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
  1509. ee->request_code, ee->error_code);
  1510. return xerrorxlib(dpy, ee); /* may call exit */
  1511. }
  1512. int
  1513. xerrordummy(Display *dpy, XErrorEvent *ee) {
  1514. return 0;
  1515. }
  1516. /* Startup Error handler to check if another window manager
  1517. * is already running. */
  1518. int
  1519. xerrorstart(Display *dpy, XErrorEvent *ee) {
  1520. otherwm = True;
  1521. return -1;
  1522. }
  1523. void
  1524. zoom(const Arg *arg) {
  1525. Client *c = sel;
  1526. if(ismax || !lt->arrange || (sel && sel->isfloating))
  1527. return;
  1528. if(c == nexttiled(clients))
  1529. if(!c || !(c = nexttiled(c->next)))
  1530. return;
  1531. detach(c);
  1532. attach(c);
  1533. focus(c);
  1534. arrange();
  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. }