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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. * The event handlers of dwm are organized in an array which is accessed
  10. * whenever a new event has been fetched. This allows event dispatching
  11. * in O(1) time.
  12. *
  13. * Each child of the root window is called a client, except windows which have
  14. * set the override_redirect flag. Clients are organized in a global
  15. * linked client list, the focus history is remembered through a global
  16. * stack list. Each client contains a bit array to indicate the tags of a
  17. * client.
  18. *
  19. * Keys and tagging rules are organized as arrays and defined in config.h.
  20. *
  21. * To understand everything else, start reading main().
  22. */
  23. #include <errno.h>
  24. #include <locale.h>
  25. #include <stdarg.h>
  26. #include <stdio.h>
  27. #include <stdlib.h>
  28. #include <string.h>
  29. #include <unistd.h>
  30. #include <sys/types.h>
  31. #include <sys/wait.h>
  32. #include <X11/cursorfont.h>
  33. #include <X11/keysym.h>
  34. #include <X11/Xatom.h>
  35. #include <X11/Xlib.h>
  36. #include <X11/Xproto.h>
  37. #include <X11/Xutil.h>
  38. #ifdef XINERAMA
  39. #include <X11/extensions/Xinerama.h>
  40. #endif
  41. /* macros */
  42. #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
  43. #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask))
  44. #define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
  45. #define ISVISIBLE(x) (x->tags & tagset[seltags])
  46. #define LENGTH(x) (sizeof x / sizeof x[0])
  47. #define MAX(a, b) ((a) > (b) ? (a) : (b))
  48. #define MIN(a, b) ((a) < (b) ? (a) : (b))
  49. #define MAXTAGLEN 16
  50. #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
  51. #define WIDTH(x) ((x)->w + 2 * (x)->bw)
  52. #define HEIGHT(x) ((x)->h + 2 * (x)->bw)
  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, WMState, WMLast }; /* default atoms */
  60. enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
  61. ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
  62. typedef union {
  63. int i;
  64. unsigned int ui;
  65. float f;
  66. void *v;
  67. } Arg;
  68. typedef struct {
  69. unsigned int click;
  70. unsigned int mask;
  71. unsigned int button;
  72. void (*func)(const Arg *arg);
  73. const Arg arg;
  74. } Button;
  75. typedef struct Client Client;
  76. struct Client {
  77. char name[256];
  78. float mina, maxa;
  79. int x, y, w, h;
  80. int basew, baseh, incw, inch, maxw, maxh, minw, minh;
  81. int bw, oldbw;
  82. unsigned int tags;
  83. Bool isfixed, isfloating, isurgent;
  84. Client *next;
  85. Client *snext;
  86. Window win;
  87. };
  88. typedef struct {
  89. int x, y, w, h;
  90. unsigned long norm[ColLast];
  91. unsigned long sel[ColLast];
  92. Drawable drawable;
  93. GC gc;
  94. struct {
  95. int ascent;
  96. int descent;
  97. int height;
  98. XFontSet set;
  99. XFontStruct *xfont;
  100. } font;
  101. } DC; /* draw context */
  102. typedef struct {
  103. unsigned int mod;
  104. KeySym keysym;
  105. void (*func)(const Arg *);
  106. const Arg arg;
  107. } Key;
  108. typedef struct {
  109. const char *symbol;
  110. void (*arrange)(void);
  111. } Layout;
  112. typedef struct {
  113. const char *class;
  114. const char *instance;
  115. const char *title;
  116. unsigned int tags;
  117. Bool isfloating;
  118. } Rule;
  119. /* function declarations */
  120. static void applyrules(Client *c);
  121. static void arrange(void);
  122. static void attach(Client *c);
  123. static void attachstack(Client *c);
  124. static void buttonpress(XEvent *e);
  125. static void checkotherwm(void);
  126. static void cleanup(void);
  127. static void clearurgent(Client *c);
  128. static void configure(Client *c);
  129. static void configurenotify(XEvent *e);
  130. static void configurerequest(XEvent *e);
  131. static void destroynotify(XEvent *e);
  132. static void detach(Client *c);
  133. static void detachstack(Client *c);
  134. static void die(const char *errstr, ...);
  135. static void drawbar(void);
  136. static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
  137. static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
  138. static void enternotify(XEvent *e);
  139. static void expose(XEvent *e);
  140. static void focus(Client *c);
  141. static void focusin(XEvent *e);
  142. static void focusstack(const Arg *arg);
  143. static Client *getclient(Window w);
  144. static unsigned long getcolor(const char *colstr);
  145. static long getstate(Window w);
  146. static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
  147. static void grabbuttons(Client *c, Bool focused);
  148. static void grabkeys(void);
  149. static void initfont(const char *fontstr);
  150. static Bool isprotodel(Client *c);
  151. static void keypress(XEvent *e);
  152. static void killclient(const Arg *arg);
  153. static void manage(Window w, XWindowAttributes *wa);
  154. static void mappingnotify(XEvent *e);
  155. static void maprequest(XEvent *e);
  156. static void monocle(void);
  157. static void movemouse(const Arg *arg);
  158. static Client *nexttiled(Client *c);
  159. static void propertynotify(XEvent *e);
  160. static void quit(const Arg *arg);
  161. static void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
  162. static void resizemouse(const Arg *arg);
  163. static void restack(void);
  164. static void run(void);
  165. static void scan(void);
  166. static void setclientstate(Client *c, long state);
  167. static void setlayout(const Arg *arg);
  168. static void setmfact(const Arg *arg);
  169. static void setup(void);
  170. static void showhide(Client *c);
  171. static void spawn(const Arg *arg);
  172. static void tag(const Arg *arg);
  173. static int textnw(const char *text, unsigned int len);
  174. static void tile(void);
  175. static void togglebar(const Arg *arg);
  176. static void togglefloating(const Arg *arg);
  177. static void toggletag(const Arg *arg);
  178. static void toggleview(const Arg *arg);
  179. static void unmanage(Client *c);
  180. static void unmapnotify(XEvent *e);
  181. static void updatebar(void);
  182. static void updategeom(void);
  183. static void updatenumlockmask(void);
  184. static void updatesizehints(Client *c);
  185. static void updatestatus(void);
  186. static void updatetitle(Client *c);
  187. static void updatewmhints(Client *c);
  188. static void view(const Arg *arg);
  189. static int xerror(Display *dpy, XErrorEvent *ee);
  190. static int xerrordummy(Display *dpy, XErrorEvent *ee);
  191. static int xerrorstart(Display *dpy, XErrorEvent *ee);
  192. static void zoom(const Arg *arg);
  193. /* variables */
  194. static char stext[256];
  195. static int screen;
  196. static int sx, sy, sw, sh; /* X display screen geometry x, y, width, height */
  197. static int by, bh, blw; /* bar geometry y, height and layout symbol width */
  198. static int wx, wy, ww, wh; /* window area geometry x, y, width, height, bar excluded */
  199. static unsigned int seltags = 0, sellt = 0;
  200. static int (*xerrorxlib)(Display *, XErrorEvent *);
  201. static unsigned int numlockmask = 0;
  202. static void (*handler[LASTEvent]) (XEvent *) = {
  203. [ButtonPress] = buttonpress,
  204. [ConfigureRequest] = configurerequest,
  205. [ConfigureNotify] = configurenotify,
  206. [DestroyNotify] = destroynotify,
  207. [EnterNotify] = enternotify,
  208. [Expose] = expose,
  209. [FocusIn] = focusin,
  210. [KeyPress] = keypress,
  211. [MappingNotify] = mappingnotify,
  212. [MapRequest] = maprequest,
  213. [PropertyNotify] = propertynotify,
  214. [UnmapNotify] = unmapnotify
  215. };
  216. static Atom wmatom[WMLast], netatom[NetLast];
  217. static Bool otherwm;
  218. static Bool running = True;
  219. static Client *clients = NULL;
  220. static Client *sel = NULL;
  221. static Client *stack = NULL;
  222. static Cursor cursor[CurLast];
  223. static Display *dpy;
  224. static DC dc;
  225. static Layout *lt[] = { NULL, NULL };
  226. static Window root, barwin;
  227. /* configuration, allows nested code to access above variables */
  228. #include "config.h"
  229. /* compile-time check if all tags fit into an unsigned int bit array. */
  230. struct NumTags { char limitexceeded[sizeof(unsigned int) * 8 < LENGTH(tags) ? -1 : 1]; };
  231. /* function implementations */
  232. void
  233. applyrules(Client *c) {
  234. unsigned int i;
  235. Rule *r;
  236. XClassHint ch = { 0 };
  237. /* rule matching */
  238. if(XGetClassHint(dpy, c->win, &ch)) {
  239. for(i = 0; i < LENGTH(rules); i++) {
  240. r = &rules[i];
  241. if((!r->title || strstr(c->name, r->title))
  242. && (!r->class || (ch.res_class && strstr(ch.res_class, r->class)))
  243. && (!r->instance || (ch.res_name && strstr(ch.res_name, r->instance)))) {
  244. c->isfloating = r->isfloating;
  245. c->tags |= r->tags & TAGMASK;
  246. }
  247. }
  248. if(ch.res_class)
  249. XFree(ch.res_class);
  250. if(ch.res_name)
  251. XFree(ch.res_name);
  252. }
  253. if(!c->tags)
  254. c->tags = tagset[seltags];
  255. }
  256. void
  257. arrange(void) {
  258. showhide(stack);
  259. focus(NULL);
  260. if(lt[sellt]->arrange)
  261. lt[sellt]->arrange();
  262. restack();
  263. }
  264. void
  265. attach(Client *c) {
  266. c->next = clients;
  267. clients = c;
  268. }
  269. void
  270. attachstack(Client *c) {
  271. c->snext = stack;
  272. stack = c;
  273. }
  274. void
  275. buttonpress(XEvent *e) {
  276. unsigned int i, x, click;
  277. Arg arg = {0};
  278. Client *c;
  279. XButtonPressedEvent *ev = &e->xbutton;
  280. click = ClkRootWin;
  281. if(ev->window == barwin) {
  282. i = x = 0;
  283. do x += TEXTW(tags[i]); while(ev->x >= x && ++i < LENGTH(tags));
  284. if(i < LENGTH(tags)) {
  285. click = ClkTagBar;
  286. arg.ui = 1 << i;
  287. }
  288. else if(ev->x < x + blw)
  289. click = ClkLtSymbol;
  290. else if(ev->x > wx + ww - TEXTW(stext))
  291. click = ClkStatusText;
  292. else
  293. click = ClkWinTitle;
  294. }
  295. else if((c = getclient(ev->window))) {
  296. focus(c);
  297. click = ClkClientWin;
  298. }
  299. for(i = 0; i < LENGTH(buttons); i++)
  300. if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
  301. && CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
  302. buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
  303. }
  304. void
  305. checkotherwm(void) {
  306. otherwm = False;
  307. xerrorxlib = XSetErrorHandler(xerrorstart);
  308. /* this causes an error if some other window manager is running */
  309. XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
  310. XSync(dpy, False);
  311. if(otherwm)
  312. die("dwm: another window manager is already running\n");
  313. XSetErrorHandler(xerror);
  314. XSync(dpy, False);
  315. }
  316. void
  317. cleanup(void) {
  318. Arg a = {.ui = ~0};
  319. Layout foo = { "", NULL };
  320. close(STDIN_FILENO);
  321. view(&a);
  322. lt[sellt] = &foo;
  323. while(stack)
  324. unmanage(stack);
  325. if(dc.font.set)
  326. XFreeFontSet(dpy, dc.font.set);
  327. else
  328. XFreeFont(dpy, dc.font.xfont);
  329. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  330. XFreePixmap(dpy, dc.drawable);
  331. XFreeGC(dpy, dc.gc);
  332. XFreeCursor(dpy, cursor[CurNormal]);
  333. XFreeCursor(dpy, cursor[CurResize]);
  334. XFreeCursor(dpy, cursor[CurMove]);
  335. XDestroyWindow(dpy, barwin);
  336. XSync(dpy, False);
  337. XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
  338. }
  339. void
  340. clearurgent(Client *c) {
  341. XWMHints *wmh;
  342. c->isurgent = False;
  343. if(!(wmh = XGetWMHints(dpy, c->win)))
  344. return;
  345. wmh->flags &= ~XUrgencyHint;
  346. XSetWMHints(dpy, c->win, wmh);
  347. XFree(wmh);
  348. }
  349. void
  350. configure(Client *c) {
  351. XConfigureEvent ce;
  352. ce.type = ConfigureNotify;
  353. ce.display = dpy;
  354. ce.event = c->win;
  355. ce.window = c->win;
  356. ce.x = c->x;
  357. ce.y = c->y;
  358. ce.width = c->w;
  359. ce.height = c->h;
  360. ce.border_width = c->bw;
  361. ce.above = None;
  362. ce.override_redirect = False;
  363. XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
  364. }
  365. void
  366. configurenotify(XEvent *e) {
  367. XConfigureEvent *ev = &e->xconfigure;
  368. if(ev->window == root && (ev->width != sw || ev->height != sh)) {
  369. sw = ev->width;
  370. sh = ev->height;
  371. updategeom();
  372. updatebar();
  373. arrange();
  374. }
  375. }
  376. void
  377. configurerequest(XEvent *e) {
  378. Client *c;
  379. XConfigureRequestEvent *ev = &e->xconfigurerequest;
  380. XWindowChanges wc;
  381. if((c = getclient(ev->window))) {
  382. if(ev->value_mask & CWBorderWidth)
  383. c->bw = ev->border_width;
  384. else if(c->isfloating || !lt[sellt]->arrange) {
  385. if(ev->value_mask & CWX)
  386. c->x = sx + ev->x;
  387. if(ev->value_mask & CWY)
  388. c->y = sy + ev->y;
  389. if(ev->value_mask & CWWidth)
  390. c->w = ev->width;
  391. if(ev->value_mask & CWHeight)
  392. c->h = ev->height;
  393. if((c->x - sx + c->w) > sw && c->isfloating)
  394. c->x = sx + (sw / 2 - c->w / 2); /* center in x direction */
  395. if((c->y - sy + c->h) > sh && c->isfloating)
  396. c->y = sy + (sh / 2 - c->h / 2); /* center in y direction */
  397. if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
  398. configure(c);
  399. if(ISVISIBLE(c))
  400. XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
  401. }
  402. else
  403. configure(c);
  404. }
  405. else {
  406. wc.x = ev->x;
  407. wc.y = ev->y;
  408. wc.width = ev->width;
  409. wc.height = ev->height;
  410. wc.border_width = ev->border_width;
  411. wc.sibling = ev->above;
  412. wc.stack_mode = ev->detail;
  413. XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
  414. }
  415. XSync(dpy, False);
  416. }
  417. void
  418. destroynotify(XEvent *e) {
  419. Client *c;
  420. XDestroyWindowEvent *ev = &e->xdestroywindow;
  421. if((c = getclient(ev->window)))
  422. unmanage(c);
  423. }
  424. void
  425. detach(Client *c) {
  426. Client **tc;
  427. for(tc = &clients; *tc && *tc != c; tc = &(*tc)->next);
  428. *tc = c->next;
  429. }
  430. void
  431. detachstack(Client *c) {
  432. Client **tc;
  433. for(tc = &stack; *tc && *tc != c; tc = &(*tc)->snext);
  434. *tc = c->snext;
  435. }
  436. void
  437. die(const char *errstr, ...) {
  438. va_list ap;
  439. va_start(ap, errstr);
  440. vfprintf(stderr, errstr, ap);
  441. va_end(ap);
  442. exit(EXIT_FAILURE);
  443. }
  444. void
  445. drawbar(void) {
  446. int x;
  447. unsigned int i, occ = 0, urg = 0;
  448. unsigned long *col;
  449. Client *c;
  450. for(c = clients; c; c = c->next) {
  451. occ |= c->tags;
  452. if(c->isurgent)
  453. urg |= c->tags;
  454. }
  455. dc.x = 0;
  456. for(i = 0; i < LENGTH(tags); i++) {
  457. dc.w = TEXTW(tags[i]);
  458. col = tagset[seltags] & 1 << i ? dc.sel : dc.norm;
  459. drawtext(tags[i], col, urg & 1 << i);
  460. drawsquare(sel && sel->tags & 1 << i, occ & 1 << i, urg & 1 << i, col);
  461. dc.x += dc.w;
  462. }
  463. if(blw > 0) {
  464. dc.w = blw;
  465. drawtext(lt[sellt]->symbol, dc.norm, False);
  466. x = dc.x + dc.w;
  467. }
  468. else
  469. x = dc.x;
  470. dc.w = TEXTW(stext);
  471. dc.x = ww - dc.w;
  472. if(dc.x < x) {
  473. dc.x = x;
  474. dc.w = ww - x;
  475. }
  476. drawtext(stext, dc.norm, False);
  477. if((dc.w = dc.x - x) > bh) {
  478. dc.x = x;
  479. if(sel) {
  480. drawtext(sel->name, dc.sel, False);
  481. drawsquare(sel->isfixed, sel->isfloating, False, dc.sel);
  482. }
  483. else
  484. drawtext(NULL, dc.norm, False);
  485. }
  486. XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, ww, bh, 0, 0);
  487. XSync(dpy, False);
  488. }
  489. void
  490. drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
  491. int x;
  492. XGCValues gcv;
  493. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  494. gcv.foreground = col[invert ? ColBG : ColFG];
  495. XChangeGC(dpy, dc.gc, GCForeground, &gcv);
  496. x = (dc.font.ascent + dc.font.descent + 2) / 4;
  497. r.x = dc.x + 1;
  498. r.y = dc.y + 1;
  499. if(filled) {
  500. r.width = r.height = x + 1;
  501. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  502. }
  503. else if(empty) {
  504. r.width = r.height = x;
  505. XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  506. }
  507. }
  508. void
  509. drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
  510. char buf[256];
  511. int i, x, y, h, len, olen;
  512. XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  513. XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
  514. XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  515. if(!text)
  516. return;
  517. olen = strlen(text);
  518. h = dc.font.ascent + dc.font.descent;
  519. y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  520. x = dc.x + (h / 2);
  521. /* shorten text if necessary */
  522. for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
  523. if(!len)
  524. return;
  525. memcpy(buf, text, len);
  526. if(len < olen)
  527. for(i = len; i && i > len - 3; buf[--i] = '.');
  528. XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
  529. if(dc.font.set)
  530. XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  531. else
  532. XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  533. }
  534. void
  535. enternotify(XEvent *e) {
  536. Client *c;
  537. XCrossingEvent *ev = &e->xcrossing;
  538. if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
  539. return;
  540. if((c = getclient(ev->window)))
  541. focus(c);
  542. else
  543. focus(NULL);
  544. }
  545. void
  546. expose(XEvent *e) {
  547. XExposeEvent *ev = &e->xexpose;
  548. if(ev->count == 0 && (ev->window == barwin))
  549. drawbar();
  550. }
  551. void
  552. focus(Client *c) {
  553. if(!c || !ISVISIBLE(c))
  554. for(c = stack; c && !ISVISIBLE(c); c = c->snext);
  555. if(sel && sel != c) {
  556. grabbuttons(sel, False);
  557. XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
  558. }
  559. if(c) {
  560. if(c->isurgent)
  561. clearurgent(c);
  562. detachstack(c);
  563. attachstack(c);
  564. grabbuttons(c, True);
  565. XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
  566. XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  567. }
  568. else
  569. XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
  570. sel = c;
  571. drawbar();
  572. }
  573. void
  574. focusin(XEvent *e) { /* there are some broken focus acquiring clients */
  575. XFocusChangeEvent *ev = &e->xfocus;
  576. if(sel && ev->window != sel->win)
  577. XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
  578. }
  579. void
  580. focusstack(const Arg *arg) {
  581. Client *c = NULL, *i;
  582. if(!sel)
  583. return;
  584. if (arg->i > 0) {
  585. for(c = sel->next; c && !ISVISIBLE(c); c = c->next);
  586. if(!c)
  587. for(c = clients; c && !ISVISIBLE(c); c = c->next);
  588. }
  589. else {
  590. for(i = clients; i != sel; i = i->next)
  591. if(ISVISIBLE(i))
  592. c = i;
  593. if(!c)
  594. for(; i; i = i->next)
  595. if(ISVISIBLE(i))
  596. c = i;
  597. }
  598. if(c) {
  599. focus(c);
  600. restack();
  601. }
  602. }
  603. Client *
  604. getclient(Window w) {
  605. Client *c;
  606. for(c = clients; c && c->win != w; c = c->next);
  607. return c;
  608. }
  609. unsigned long
  610. getcolor(const char *colstr) {
  611. Colormap cmap = DefaultColormap(dpy, screen);
  612. XColor color;
  613. if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
  614. die("error, cannot allocate color '%s'\n", colstr);
  615. return color.pixel;
  616. }
  617. long
  618. getstate(Window w) {
  619. int format, status;
  620. long result = -1;
  621. unsigned char *p = NULL;
  622. unsigned long n, extra;
  623. Atom real;
  624. status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
  625. &real, &format, &n, &extra, (unsigned char **)&p);
  626. if(status != Success)
  627. return -1;
  628. if(n != 0)
  629. result = *p;
  630. XFree(p);
  631. return result;
  632. }
  633. Bool
  634. gettextprop(Window w, Atom atom, char *text, unsigned int size) {
  635. char **list = NULL;
  636. int n;
  637. XTextProperty name;
  638. if(!text || size == 0)
  639. return False;
  640. text[0] = '\0';
  641. XGetTextProperty(dpy, w, &name, atom);
  642. if(!name.nitems)
  643. return False;
  644. if(name.encoding == XA_STRING)
  645. strncpy(text, (char *)name.value, size - 1);
  646. else {
  647. if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
  648. && n > 0 && *list) {
  649. strncpy(text, *list, size - 1);
  650. XFreeStringList(list);
  651. }
  652. }
  653. text[size - 1] = '\0';
  654. XFree(name.value);
  655. return True;
  656. }
  657. void
  658. grabbuttons(Client *c, Bool focused) {
  659. updatenumlockmask();
  660. {
  661. unsigned int i, j;
  662. unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
  663. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  664. if(focused) {
  665. for(i = 0; i < LENGTH(buttons); i++)
  666. if(buttons[i].click == ClkClientWin)
  667. for(j = 0; j < LENGTH(modifiers); j++)
  668. XGrabButton(dpy, buttons[i].button, buttons[i].mask | modifiers[j], c->win, False, BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  669. } else
  670. XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
  671. BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
  672. }
  673. }
  674. void
  675. grabkeys(void) {
  676. updatenumlockmask();
  677. { /* grab keys */
  678. unsigned int i, j;
  679. unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
  680. KeyCode code;
  681. XUngrabKey(dpy, AnyKey, AnyModifier, root);
  682. for(i = 0; i < LENGTH(keys); i++) {
  683. if((code = XKeysymToKeycode(dpy, keys[i].keysym)))
  684. for(j = 0; j < LENGTH(modifiers); j++)
  685. XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
  686. True, GrabModeAsync, GrabModeAsync);
  687. }
  688. }
  689. }
  690. void
  691. initfont(const char *fontstr) {
  692. char *def, **missing;
  693. int i, n;
  694. missing = NULL;
  695. dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
  696. if(missing) {
  697. while(n--)
  698. fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
  699. XFreeStringList(missing);
  700. }
  701. if(dc.font.set) {
  702. XFontSetExtents *font_extents;
  703. XFontStruct **xfonts;
  704. char **font_names;
  705. dc.font.ascent = dc.font.descent = 0;
  706. font_extents = XExtentsOfFontSet(dc.font.set);
  707. n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
  708. for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
  709. dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
  710. dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
  711. xfonts++;
  712. }
  713. }
  714. else {
  715. if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
  716. && !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
  717. die("error, cannot load font: '%s'\n", fontstr);
  718. dc.font.ascent = dc.font.xfont->ascent;
  719. dc.font.descent = dc.font.xfont->descent;
  720. }
  721. dc.font.height = dc.font.ascent + dc.font.descent;
  722. }
  723. Bool
  724. isprotodel(Client *c) {
  725. int i, n;
  726. Atom *protocols;
  727. Bool ret = False;
  728. if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
  729. for(i = 0; !ret && i < n; i++)
  730. if(protocols[i] == wmatom[WMDelete])
  731. ret = True;
  732. XFree(protocols);
  733. }
  734. return ret;
  735. }
  736. void
  737. keypress(XEvent *e) {
  738. unsigned int i;
  739. KeySym keysym;
  740. XKeyEvent *ev;
  741. ev = &e->xkey;
  742. keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
  743. for(i = 0; i < LENGTH(keys); i++)
  744. if(keysym == keys[i].keysym
  745. && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
  746. && keys[i].func)
  747. keys[i].func(&(keys[i].arg));
  748. }
  749. void
  750. killclient(const Arg *arg) {
  751. XEvent ev;
  752. if(!sel)
  753. return;
  754. if(isprotodel(sel)) {
  755. ev.type = ClientMessage;
  756. ev.xclient.window = sel->win;
  757. ev.xclient.message_type = wmatom[WMProtocols];
  758. ev.xclient.format = 32;
  759. ev.xclient.data.l[0] = wmatom[WMDelete];
  760. ev.xclient.data.l[1] = CurrentTime;
  761. XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
  762. }
  763. else
  764. XKillClient(dpy, sel->win);
  765. }
  766. void
  767. manage(Window w, XWindowAttributes *wa) {
  768. static Client cz;
  769. Client *c, *t = NULL;
  770. Window trans = None;
  771. XWindowChanges wc;
  772. if(!(c = malloc(sizeof(Client))))
  773. die("fatal: could not malloc() %u bytes\n", sizeof(Client));
  774. *c = cz;
  775. c->win = w;
  776. /* geometry */
  777. c->x = wa->x;
  778. c->y = wa->y;
  779. c->w = wa->width;
  780. c->h = wa->height;
  781. c->oldbw = wa->border_width;
  782. if(c->w == sw && c->h == sh) {
  783. c->x = sx;
  784. c->y = sy;
  785. c->bw = 0;
  786. }
  787. else {
  788. if(c->x + WIDTH(c) > sx + sw)
  789. c->x = sx + sw - WIDTH(c);
  790. if(c->y + HEIGHT(c) > sy + sh)
  791. c->y = sy + sh - HEIGHT(c);
  792. c->x = MAX(c->x, sx);
  793. /* only fix client y-offset, if the client center might cover the bar */
  794. c->y = MAX(c->y, ((by == 0) && (c->x + (c->w / 2) >= wx) && (c->x + (c->w / 2) < wx + ww)) ? bh : sy);
  795. c->bw = borderpx;
  796. }
  797. wc.border_width = c->bw;
  798. XConfigureWindow(dpy, w, CWBorderWidth, &wc);
  799. XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
  800. configure(c); /* propagates border_width, if size doesn't change */
  801. updatesizehints(c);
  802. XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
  803. grabbuttons(c, False);
  804. updatetitle(c);
  805. if(XGetTransientForHint(dpy, w, &trans))
  806. t = getclient(trans);
  807. if(t)
  808. c->tags = t->tags;
  809. else
  810. applyrules(c);
  811. if(!c->isfloating)
  812. c->isfloating = trans != None || c->isfixed;
  813. if(c->isfloating)
  814. XRaiseWindow(dpy, c->win);
  815. attach(c);
  816. attachstack(c);
  817. XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
  818. XMapWindow(dpy, c->win);
  819. setclientstate(c, NormalState);
  820. arrange();
  821. }
  822. void
  823. mappingnotify(XEvent *e) {
  824. XMappingEvent *ev = &e->xmapping;
  825. XRefreshKeyboardMapping(ev);
  826. if(ev->request == MappingKeyboard)
  827. grabkeys();
  828. }
  829. void
  830. maprequest(XEvent *e) {
  831. static XWindowAttributes wa;
  832. XMapRequestEvent *ev = &e->xmaprequest;
  833. if(!XGetWindowAttributes(dpy, ev->window, &wa))
  834. return;
  835. if(wa.override_redirect)
  836. return;
  837. if(!getclient(ev->window))
  838. manage(ev->window, &wa);
  839. }
  840. void
  841. monocle(void) {
  842. Client *c;
  843. for(c = nexttiled(clients); c; c = nexttiled(c->next))
  844. resize(c, wx, wy, ww - 2 * c->bw, wh - 2 * c->bw, resizehints);
  845. }
  846. void
  847. movemouse(const Arg *arg) {
  848. int x, y, ocx, ocy, di, nx, ny;
  849. unsigned int dui;
  850. Client *c;
  851. Window dummy;
  852. XEvent ev;
  853. if(!(c = sel))
  854. return;
  855. restack();
  856. ocx = c->x;
  857. ocy = c->y;
  858. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  859. None, cursor[CurMove], CurrentTime) != GrabSuccess)
  860. return;
  861. XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui);
  862. if(usegrab)
  863. XGrabServer(dpy);
  864. do {
  865. XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
  866. switch (ev.type) {
  867. case ConfigureRequest:
  868. case Expose:
  869. case MapRequest:
  870. handler[ev.type](&ev);
  871. break;
  872. case MotionNotify:
  873. nx = ocx + (ev.xmotion.x - x);
  874. ny = ocy + (ev.xmotion.y - y);
  875. if(snap && nx >= wx && nx <= wx + ww
  876. && ny >= wy && ny <= wy + wh) {
  877. if(abs(wx - nx) < snap)
  878. nx = wx;
  879. else if(abs((wx + ww) - (nx + WIDTH(c))) < snap)
  880. nx = wx + ww - WIDTH(c);
  881. if(abs(wy - ny) < snap)
  882. ny = wy;
  883. else if(abs((wy + wh) - (ny + HEIGHT(c))) < snap)
  884. ny = wy + wh - HEIGHT(c);
  885. if(!c->isfloating && lt[sellt]->arrange && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
  886. togglefloating(NULL);
  887. }
  888. if(!lt[sellt]->arrange || c->isfloating)
  889. resize(c, nx, ny, c->w, c->h, False);
  890. break;
  891. }
  892. }
  893. while(ev.type != ButtonRelease);
  894. if(usegrab)
  895. XUngrabServer(dpy);
  896. XUngrabPointer(dpy, CurrentTime);
  897. }
  898. Client *
  899. nexttiled(Client *c) {
  900. for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
  901. return c;
  902. }
  903. void
  904. propertynotify(XEvent *e) {
  905. Client *c;
  906. Window trans;
  907. XPropertyEvent *ev = &e->xproperty;
  908. if((ev->window == root) && (ev->atom = XA_WM_NAME))
  909. updatestatus();
  910. else if(ev->state == PropertyDelete)
  911. return; /* ignore */
  912. else if((c = getclient(ev->window))) {
  913. switch (ev->atom) {
  914. default: break;
  915. case XA_WM_TRANSIENT_FOR:
  916. XGetTransientForHint(dpy, c->win, &trans);
  917. if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
  918. arrange();
  919. break;
  920. case XA_WM_NORMAL_HINTS:
  921. updatesizehints(c);
  922. break;
  923. case XA_WM_HINTS:
  924. updatewmhints(c);
  925. drawbar();
  926. break;
  927. }
  928. if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
  929. updatetitle(c);
  930. if(c == sel)
  931. drawbar();
  932. }
  933. }
  934. }
  935. void
  936. quit(const Arg *arg) {
  937. running = False;
  938. }
  939. void
  940. resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
  941. XWindowChanges wc;
  942. if(sizehints) {
  943. /* see last two sentences in ICCCM 4.1.2.3 */
  944. Bool baseismin = c->basew == c->minw && c->baseh == c->minh;
  945. /* set minimum possible */
  946. w = MAX(1, w);
  947. h = MAX(1, h);
  948. if(!baseismin) { /* temporarily remove base dimensions */
  949. w -= c->basew;
  950. h -= c->baseh;
  951. }
  952. /* adjust for aspect limits */
  953. if(c->mina > 0 && c->maxa > 0) {
  954. if(c->maxa < (float)w / h)
  955. w = h * c->maxa;
  956. else if(c->mina < (float)h / w)
  957. h = w * c->mina;
  958. }
  959. if(baseismin) { /* increment calculation requires this */
  960. w -= c->basew;
  961. h -= c->baseh;
  962. }
  963. /* adjust for increment value */
  964. if(c->incw)
  965. w -= w % c->incw;
  966. if(c->inch)
  967. h -= h % c->inch;
  968. /* restore base dimensions */
  969. w += c->basew;
  970. h += c->baseh;
  971. w = MAX(w, c->minw);
  972. h = MAX(h, c->minh);
  973. if(c->maxw)
  974. w = MIN(w, c->maxw);
  975. if(c->maxh)
  976. h = MIN(h, c->maxh);
  977. }
  978. if(w <= 0 || h <= 0)
  979. return;
  980. if(x > sx + sw)
  981. x = sw - WIDTH(c);
  982. if(y > sy + sh)
  983. y = sh - HEIGHT(c);
  984. if(x + w + 2 * c->bw < sx)
  985. x = sx;
  986. if(y + h + 2 * c->bw < sy)
  987. y = sy;
  988. if(h < bh)
  989. h = bh;
  990. if(w < bh)
  991. w = bh;
  992. if(c->x != x || c->y != y || c->w != w || c->h != h) {
  993. c->x = wc.x = x;
  994. c->y = wc.y = y;
  995. c->w = wc.width = w;
  996. c->h = wc.height = h;
  997. wc.border_width = c->bw;
  998. XConfigureWindow(dpy, c->win,
  999. CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
  1000. configure(c);
  1001. XSync(dpy, False);
  1002. }
  1003. }
  1004. void
  1005. resizemouse(const Arg *arg) {
  1006. int ocx, ocy;
  1007. int nw, nh;
  1008. Client *c;
  1009. XEvent ev;
  1010. if(!(c = sel))
  1011. return;
  1012. restack();
  1013. ocx = c->x;
  1014. ocy = c->y;
  1015. if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  1016. None, cursor[CurResize], CurrentTime) != GrabSuccess)
  1017. return;
  1018. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
  1019. if(usegrab)
  1020. XGrabServer(dpy);
  1021. do {
  1022. XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
  1023. switch(ev.type) {
  1024. case ConfigureRequest:
  1025. case Expose:
  1026. case MapRequest:
  1027. handler[ev.type](&ev);
  1028. break;
  1029. case MotionNotify:
  1030. nw = MAX(ev.xmotion.x - ocx - 2*c->bw + 1, 1);
  1031. nh = MAX(ev.xmotion.y - ocy - 2*c->bw + 1, 1);
  1032. if(snap && nw >= wx && nw <= wx + ww
  1033. && nh >= wy && nh <= wy + wh) {
  1034. if(!c->isfloating && lt[sellt]->arrange
  1035. && (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
  1036. togglefloating(NULL);
  1037. }
  1038. if(!lt[sellt]->arrange || c->isfloating)
  1039. resize(c, c->x, c->y, nw, nh, True);
  1040. break;
  1041. }
  1042. }
  1043. while(ev.type != ButtonRelease);
  1044. if(usegrab)
  1045. XUngrabServer(dpy);
  1046. XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
  1047. XUngrabPointer(dpy, CurrentTime);
  1048. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1049. }
  1050. void
  1051. restack(void) {
  1052. Client *c;
  1053. XEvent ev;
  1054. XWindowChanges wc;
  1055. drawbar();
  1056. if(!sel)
  1057. return;
  1058. if(sel->isfloating || !lt[sellt]->arrange)
  1059. XRaiseWindow(dpy, sel->win);
  1060. if(lt[sellt]->arrange) {
  1061. wc.stack_mode = Below;
  1062. wc.sibling = barwin;
  1063. for(c = stack; c; c = c->snext)
  1064. if(!c->isfloating && ISVISIBLE(c)) {
  1065. XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
  1066. wc.sibling = c->win;
  1067. }
  1068. }
  1069. XSync(dpy, False);
  1070. while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  1071. }
  1072. void
  1073. run(void) {
  1074. XEvent ev;
  1075. /* main event loop */
  1076. XSync(dpy, False);
  1077. while(running && !XNextEvent(dpy, &ev)) {
  1078. if(handler[ev.type])
  1079. (handler[ev.type])(&ev); /* call handler */
  1080. }
  1081. }
  1082. void
  1083. scan(void) {
  1084. unsigned int i, num;
  1085. Window d1, d2, *wins = NULL;
  1086. XWindowAttributes wa;
  1087. if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
  1088. for(i = 0; i < num; i++) {
  1089. if(!XGetWindowAttributes(dpy, wins[i], &wa)
  1090. || wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
  1091. continue;
  1092. if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
  1093. manage(wins[i], &wa);
  1094. }
  1095. for(i = 0; i < num; i++) { /* now the transients */
  1096. if(!XGetWindowAttributes(dpy, wins[i], &wa))
  1097. continue;
  1098. if(XGetTransientForHint(dpy, wins[i], &d1)
  1099. && (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
  1100. manage(wins[i], &wa);
  1101. }
  1102. if(wins)
  1103. XFree(wins);
  1104. }
  1105. }
  1106. void
  1107. setclientstate(Client *c, long state) {
  1108. long data[] = {state, None};
  1109. XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
  1110. PropModeReplace, (unsigned char *)data, 2);
  1111. }
  1112. void
  1113. setlayout(const Arg *arg) {
  1114. if(!arg || !arg->v || arg->v != lt[sellt])
  1115. sellt ^= 1;
  1116. if(arg && arg->v)
  1117. lt[sellt] = (Layout *)arg->v;
  1118. if(sel)
  1119. arrange();
  1120. else
  1121. drawbar();
  1122. }
  1123. /* arg > 1.0 will set mfact absolutly */
  1124. void
  1125. setmfact(const Arg *arg) {
  1126. float f;
  1127. if(!arg || !lt[sellt]->arrange)
  1128. return;
  1129. f = arg->f < 1.0 ? arg->f + mfact : arg->f - 1.0;
  1130. if(f < 0.1 || f > 0.9)
  1131. return;
  1132. mfact = f;
  1133. arrange();
  1134. }
  1135. void
  1136. setup(void) {
  1137. unsigned int i;
  1138. int w;
  1139. XSetWindowAttributes wa;
  1140. /* init screen */
  1141. screen = DefaultScreen(dpy);
  1142. root = RootWindow(dpy, screen);
  1143. initfont(font);
  1144. sx = 0;
  1145. sy = 0;
  1146. sw = DisplayWidth(dpy, screen);
  1147. sh = DisplayHeight(dpy, screen);
  1148. bh = dc.h = dc.font.height + 2;
  1149. lt[0] = &layouts[0];
  1150. lt[1] = &layouts[1 % LENGTH(layouts)];
  1151. updategeom();
  1152. /* init atoms */
  1153. wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
  1154. wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
  1155. wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
  1156. netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
  1157. netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
  1158. /* init cursors */
  1159. wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
  1160. cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
  1161. cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
  1162. /* init appearance */
  1163. dc.norm[ColBorder] = getcolor(normbordercolor);
  1164. dc.norm[ColBG] = getcolor(normbgcolor);
  1165. dc.norm[ColFG] = getcolor(normfgcolor);
  1166. dc.sel[ColBorder] = getcolor(selbordercolor);
  1167. dc.sel[ColBG] = getcolor(selbgcolor);
  1168. dc.sel[ColFG] = getcolor(selfgcolor);
  1169. dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
  1170. dc.gc = XCreateGC(dpy, root, 0, 0);
  1171. XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
  1172. if(!dc.font.set)
  1173. XSetFont(dpy, dc.gc, dc.font.xfont->fid);
  1174. /* init bar */
  1175. for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
  1176. w = TEXTW(layouts[i].symbol);
  1177. blw = MAX(blw, w);
  1178. }
  1179. wa.override_redirect = 1;
  1180. wa.background_pixmap = ParentRelative;
  1181. wa.event_mask = ButtonPressMask|ExposureMask;
  1182. barwin = XCreateWindow(dpy, root, wx, by, ww, bh, 0, DefaultDepth(dpy, screen),
  1183. CopyFromParent, DefaultVisual(dpy, screen),
  1184. CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
  1185. XDefineCursor(dpy, barwin, cursor[CurNormal]);
  1186. XMapRaised(dpy, barwin);
  1187. updatestatus();
  1188. /* EWMH support per view */
  1189. XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
  1190. PropModeReplace, (unsigned char *) netatom, NetLast);
  1191. /* select for events */
  1192. wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask
  1193. |EnterWindowMask|LeaveWindowMask|StructureNotifyMask
  1194. |PropertyChangeMask;
  1195. XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
  1196. XSelectInput(dpy, root, wa.event_mask);
  1197. grabkeys();
  1198. }
  1199. void
  1200. showhide(Client *c) {
  1201. if(!c)
  1202. return;
  1203. if(ISVISIBLE(c)) { /* show clients top down */
  1204. XMoveWindow(dpy, c->win, c->x, c->y);
  1205. if(!lt[sellt]->arrange || c->isfloating)
  1206. resize(c, c->x, c->y, c->w, c->h, True);
  1207. showhide(c->snext);
  1208. }
  1209. else { /* hide clients bottom up */
  1210. showhide(c->snext);
  1211. XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  1212. }
  1213. }
  1214. void
  1215. spawn(const Arg *arg) {
  1216. /* The double-fork construct avoids zombie processes and keeps the code
  1217. * clean from stupid signal handlers. */
  1218. if(fork() == 0) {
  1219. if(fork() == 0) {
  1220. if(dpy)
  1221. close(ConnectionNumber(dpy));
  1222. setsid();
  1223. execvp(((char **)arg->v)[0], (char **)arg->v);
  1224. fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
  1225. perror(" failed");
  1226. }
  1227. exit(0);
  1228. }
  1229. wait(0);
  1230. }
  1231. void
  1232. tag(const Arg *arg) {
  1233. if(sel && arg->ui & TAGMASK) {
  1234. sel->tags = arg->ui & TAGMASK;
  1235. arrange();
  1236. }
  1237. }
  1238. int
  1239. textnw(const char *text, unsigned int len) {
  1240. XRectangle r;
  1241. if(dc.font.set) {
  1242. XmbTextExtents(dc.font.set, text, len, NULL, &r);
  1243. return r.width;
  1244. }
  1245. return XTextWidth(dc.font.xfont, text, len);
  1246. }
  1247. void
  1248. tile(void) {
  1249. int x, y, h, w, mw;
  1250. unsigned int i, n;
  1251. Client *c;
  1252. for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next), n++);
  1253. if(n == 0)
  1254. return;
  1255. /* master */
  1256. c = nexttiled(clients);
  1257. mw = mfact * ww;
  1258. resize(c, wx, wy, (n == 1 ? ww : mw) - 2 * c->bw, wh - 2 * c->bw, resizehints);
  1259. if(--n == 0)
  1260. return;
  1261. /* tile stack */
  1262. x = (wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : wx + mw;
  1263. y = wy;
  1264. w = (wx + mw > c->x + c->w) ? wx + ww - x : ww - mw;
  1265. h = wh / n;
  1266. if(h < bh)
  1267. h = wh;
  1268. for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
  1269. resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
  1270. ? wy + wh - y - 2 * c->bw : h - 2 * c->bw), resizehints);
  1271. if(h != wh)
  1272. y = c->y + HEIGHT(c);
  1273. }
  1274. }
  1275. void
  1276. togglebar(const Arg *arg) {
  1277. showbar = !showbar;
  1278. updategeom();
  1279. updatebar();
  1280. arrange();
  1281. }
  1282. void
  1283. togglefloating(const Arg *arg) {
  1284. if(!sel)
  1285. return;
  1286. sel->isfloating = !sel->isfloating || sel->isfixed;
  1287. if(sel->isfloating)
  1288. resize(sel, sel->x, sel->y, sel->w, sel->h, True);
  1289. arrange();
  1290. }
  1291. void
  1292. toggletag(const Arg *arg) {
  1293. unsigned int mask;
  1294. if (!sel)
  1295. return;
  1296. mask = sel->tags ^ (arg->ui & TAGMASK);
  1297. if(sel && mask) {
  1298. sel->tags = mask;
  1299. arrange();
  1300. }
  1301. }
  1302. void
  1303. toggleview(const Arg *arg) {
  1304. unsigned int mask = tagset[seltags] ^ (arg->ui & TAGMASK);
  1305. if(mask) {
  1306. tagset[seltags] = mask;
  1307. arrange();
  1308. }
  1309. }
  1310. void
  1311. unmanage(Client *c) {
  1312. XWindowChanges wc;
  1313. wc.border_width = c->oldbw;
  1314. /* The server grab construct avoids race conditions. */
  1315. XGrabServer(dpy);
  1316. XSetErrorHandler(xerrordummy);
  1317. XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
  1318. detach(c);
  1319. detachstack(c);
  1320. if(sel == c)
  1321. focus(NULL);
  1322. XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  1323. setclientstate(c, WithdrawnState);
  1324. free(c);
  1325. XSync(dpy, False);
  1326. XSetErrorHandler(xerror);
  1327. XUngrabServer(dpy);
  1328. arrange();
  1329. }
  1330. void
  1331. unmapnotify(XEvent *e) {
  1332. Client *c;
  1333. XUnmapEvent *ev = &e->xunmap;
  1334. if((c = getclient(ev->window)))
  1335. unmanage(c);
  1336. }
  1337. void
  1338. updatebar(void) {
  1339. if(dc.drawable != 0)
  1340. XFreePixmap(dpy, dc.drawable);
  1341. dc.drawable = XCreatePixmap(dpy, root, ww, bh, DefaultDepth(dpy, screen));
  1342. XMoveResizeWindow(dpy, barwin, wx, by, ww, bh);
  1343. }
  1344. void
  1345. updategeom(void) {
  1346. #ifdef XINERAMA
  1347. int n, i = 0;
  1348. XineramaScreenInfo *info = NULL;
  1349. /* window area geometry */
  1350. if(XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
  1351. if(n > 1) {
  1352. int di, x, y;
  1353. unsigned int dui;
  1354. Window dummy;
  1355. if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui))
  1356. for(i = 0; i < n; i++)
  1357. if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
  1358. break;
  1359. }
  1360. wx = info[i].x_org;
  1361. wy = showbar && topbar ? info[i].y_org + bh : info[i].y_org;
  1362. ww = info[i].width;
  1363. wh = showbar ? info[i].height - bh : info[i].height;
  1364. XFree(info);
  1365. }
  1366. else
  1367. #endif
  1368. {
  1369. wx = sx;
  1370. wy = showbar && topbar ? sy + bh : sy;
  1371. ww = sw;
  1372. wh = showbar ? sh - bh : sh;
  1373. }
  1374. /* bar position */
  1375. by = showbar ? (topbar ? wy - bh : wy + wh) : -bh;
  1376. }
  1377. void
  1378. updatenumlockmask(void) {
  1379. unsigned int i, j;
  1380. XModifierKeymap *modmap;
  1381. numlockmask = 0;
  1382. modmap = XGetModifierMapping(dpy);
  1383. for(i = 0; i < 8; i++)
  1384. for(j = 0; j < modmap->max_keypermod; j++)
  1385. if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
  1386. numlockmask = (1 << i);
  1387. XFreeModifiermap(modmap);
  1388. }
  1389. void
  1390. updatesizehints(Client *c) {
  1391. long msize;
  1392. XSizeHints size;
  1393. if(!XGetWMNormalHints(dpy, c->win, &size, &msize))
  1394. /* size is uninitialized, ensure that size.flags aren't used */
  1395. size.flags = PSize;
  1396. if(size.flags & PBaseSize) {
  1397. c->basew = size.base_width;
  1398. c->baseh = size.base_height;
  1399. }
  1400. else if(size.flags & PMinSize) {
  1401. c->basew = size.min_width;
  1402. c->baseh = size.min_height;
  1403. }
  1404. else
  1405. c->basew = c->baseh = 0;
  1406. if(size.flags & PResizeInc) {
  1407. c->incw = size.width_inc;
  1408. c->inch = size.height_inc;
  1409. }
  1410. else
  1411. c->incw = c->inch = 0;
  1412. if(size.flags & PMaxSize) {
  1413. c->maxw = size.max_width;
  1414. c->maxh = size.max_height;
  1415. }
  1416. else
  1417. c->maxw = c->maxh = 0;
  1418. if(size.flags & PMinSize) {
  1419. c->minw = size.min_width;
  1420. c->minh = size.min_height;
  1421. }
  1422. else if(size.flags & PBaseSize) {
  1423. c->minw = size.base_width;
  1424. c->minh = size.base_height;
  1425. }
  1426. else
  1427. c->minw = c->minh = 0;
  1428. if(size.flags & PAspect) {
  1429. c->mina = (float)size.min_aspect.y / (float)size.min_aspect.x;
  1430. c->maxa = (float)size.max_aspect.x / (float)size.max_aspect.y;
  1431. }
  1432. else
  1433. c->maxa = c->mina = 0.0;
  1434. c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
  1435. && c->maxw == c->minw && c->maxh == c->minh);
  1436. }
  1437. void
  1438. updatetitle(Client *c) {
  1439. if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
  1440. gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
  1441. }
  1442. void
  1443. updatestatus() {
  1444. if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
  1445. strcpy(stext, "dwm-"VERSION);
  1446. drawbar();
  1447. }
  1448. void
  1449. updatewmhints(Client *c) {
  1450. XWMHints *wmh;
  1451. if((wmh = XGetWMHints(dpy, c->win))) {
  1452. if(c == sel && wmh->flags & XUrgencyHint) {
  1453. wmh->flags &= ~XUrgencyHint;
  1454. XSetWMHints(dpy, c->win, wmh);
  1455. }
  1456. else
  1457. c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
  1458. XFree(wmh);
  1459. }
  1460. }
  1461. void
  1462. view(const Arg *arg) {
  1463. if((arg->ui & TAGMASK) == tagset[seltags])
  1464. return;
  1465. seltags ^= 1; /* toggle sel tagset */
  1466. if(arg->ui & TAGMASK)
  1467. tagset[seltags] = arg->ui & TAGMASK;
  1468. arrange();
  1469. }
  1470. /* There's no way to check accesses to destroyed windows, thus those cases are
  1471. * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
  1472. * default error handler, which may call exit. */
  1473. int
  1474. xerror(Display *dpy, XErrorEvent *ee) {
  1475. if(ee->error_code == BadWindow
  1476. || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
  1477. || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
  1478. || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
  1479. || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
  1480. || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
  1481. || (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
  1482. || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
  1483. || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
  1484. return 0;
  1485. fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
  1486. ee->request_code, ee->error_code);
  1487. return xerrorxlib(dpy, ee); /* may call exit */
  1488. }
  1489. int
  1490. xerrordummy(Display *dpy, XErrorEvent *ee) {
  1491. return 0;
  1492. }
  1493. /* Startup Error handler to check if another window manager
  1494. * is already running. */
  1495. int
  1496. xerrorstart(Display *dpy, XErrorEvent *ee) {
  1497. otherwm = True;
  1498. return -1;
  1499. }
  1500. void
  1501. zoom(const Arg *arg) {
  1502. Client *c = sel;
  1503. if(!lt[sellt]->arrange || lt[sellt]->arrange == monocle || (sel && sel->isfloating))
  1504. return;
  1505. if(c == nexttiled(clients))
  1506. if(!c || !(c = nexttiled(c->next)))
  1507. return;
  1508. detach(c);
  1509. attach(c);
  1510. focus(c);
  1511. arrange();
  1512. }
  1513. int
  1514. main(int argc, char *argv[]) {
  1515. if(argc == 2 && !strcmp("-v", argv[1]))
  1516. die("dwm-"VERSION", © 2006-2008 dwm engineers, see LICENSE for details\n");
  1517. else if(argc != 1)
  1518. die("usage: dwm [-v]\n");
  1519. if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
  1520. fprintf(stderr, "warning: no locale support\n");
  1521. if(!(dpy = XOpenDisplay(0)))
  1522. die("dwm: cannot open display\n");
  1523. checkotherwm();
  1524. setup();
  1525. scan();
  1526. run();
  1527. cleanup();
  1528. XCloseDisplay(dpy);
  1529. return 0;
  1530. }