+
−/* See LICENSE file for copyright and license details.
+
− *
+
− * dynamic window manager is designed like any other X client as well. It is
+
− * driven through handling X events. In contrast to other X clients, a window
+
− * manager selects for SubstructureRedirectMask on the root window, to receive
+
− * events about window (dis-)appearance.  Only one X connection at a time is
+
− * allowed to select for this event mask.
+
− *
+
− * The event handlers of dwm are organized in an array which is accessed
+
− * whenever a new event has been fetched. This allows event dispatching
+
− * in O(1) time.
+
− *
+
− * Each child of the root window is called a client, except windows which have
+
− * set the override_redirect flag.  Clients are organized in a linked client
+
− * list on each monitor, the focus history is remembered through a stack list
+
− * on each monitor. Each client contains a bit array to indicate the tags of a
+
− * client.
+
− *
+
− * Keys and tagging rules are organized as arrays and defined in config.h.
+
− *
+
− * To understand everything else, start reading main().
+
− */
+
−#include <errno.h>
+
−#include <locale.h>
+
−#include <stdarg.h>
+
−#include <signal.h>
+
−#include <stdio.h>
+
−#include <stdlib.h>
+
−#include <string.h>
+
−#include <unistd.h>
+
−#include <sys/types.h>
+
−#include <sys/wait.h>
+
−#include <X11/cursorfont.h>
+
−#include <X11/keysym.h>
+
−#include <X11/Xatom.h>
+
−#include <X11/Xlib.h>
+
−#include <X11/Xproto.h>
+
−#include <X11/Xutil.h>
+
−#ifdef XINERAMA
+
−#include <X11/extensions/Xinerama.h>
+
−#endif /* XINERAMA */
+
−
+
−/* macros */
+
−#define BUTTONMASK              (ButtonPressMask|ButtonReleaseMask)
+
−#define CLEANMASK(mask)         (mask & ~(numlockmask|LockMask))
+
−#define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
+
−#define ISVISIBLE(C)            ((C->tags & C->mon->tagset[C->mon->seltags]))
+
−#define LENGTH(X)               (sizeof X / sizeof X[0])
+
−#define MAX(A, B)               ((A) > (B) ? (A) : (B))
+
−#define MIN(A, B)               ((A) < (B) ? (A) : (B))
+
−#define MOUSEMASK               (BUTTONMASK|PointerMotionMask)
+
−#define WIDTH(X)                ((X)->w + 2 * (X)->bw)
+
−#define HEIGHT(X)               ((X)->h + 2 * (X)->bw)
+
−#define TAGMASK                 ((1 << LENGTH(tags)) - 1)
+
−#define TEXTW(X)                (textnw(X, strlen(X)) + dc.font.height)
+
−
+
−/* enums */
+
−enum { CurNormal, CurResize, CurMove, CurLast };        /* cursor */
+
−enum { ColBorder, ColFG, ColBG, ColLast };              /* color */
+
−enum { NetSupported, NetWMName, NetLast };              /* EWMH atoms */
+
−enum { WMProtocols, WMDelete, WMState, WMLast };        /* default atoms */
+
−enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
+
−       ClkClientWin, ClkRootWin, ClkLast };             /* clicks */
+
−
+
−typedef union {
+
−	int i;
+
−	unsigned int ui;
+
−	float f;
+
−	const void *v;
+
−} Arg;
+
−
+
−typedef struct {
+
−	unsigned int click;
+
−	unsigned int mask;
+
−	unsigned int button;
+
−	void (*func)(const Arg *arg);
+
−	const Arg arg;
+
−} Button;
+
−
+
−typedef struct Monitor Monitor;
+
−typedef struct Client Client;
+
−struct Client {
+
−	char name[256];
+
−	float mina, maxa;
+
−	int x, y, w, h;
+
−	int basew, baseh, incw, inch, maxw, maxh, minw, minh;
+
−	int bw, oldbw;
+
−	unsigned int tags;
+
−	Bool isfixed, isfloating, isurgent;
+
−	Client *next;
+
−	Client *snext;
+
−	Monitor *mon;
+
−	Window win;
+
−};
+
−
+
−typedef struct {
+
−	int x, y, w, h;
+
−	unsigned long norm[ColLast];
+
−	unsigned long sel[ColLast];
+
−	Drawable drawable;
+
−	GC gc;
+
−	struct {
+
−		int ascent;
+
−		int descent;
+
−		int height;
+
−		XFontSet set;
+
−		XFontStruct *xfont;
+
−	} font;
+
−} DC; /* draw context */
+
−
+
−typedef struct {
+
−	unsigned int mod;
+
−	KeySym keysym;
+
−	void (*func)(const Arg *);
+
−	const Arg arg;
+
−} Key;
+
−
+
−typedef struct {
+
−	const char *symbol;
+
−	void (*arrange)(Monitor *);
+
−} Layout;
+
−
+
−struct Monitor {
+
−	char ltsymbol[16];
+
−	float mfact;
+
−	int num;
+
−	int by;               /* bar geometry */
+
−	int mx, my, mw, mh;   /* screen size */
+
−	int wx, wy, ww, wh;   /* window area  */
+
−	unsigned int seltags;
+
−	unsigned int sellt;
+
−	unsigned int tagset[2];
+
−	Bool showbar;
+
−	Bool topbar;
+
−	Client *clients;
+
−	Client *sel;
+
−	Client *stack;
+
−	Monitor *next;
+
−	Window barwin;
+
−	const Layout *lt[2];
+
−};
+
−
+
−typedef struct {
+
−	const char *class;
+
−	const char *instance;
+
−	const char *title;
+
−	unsigned int tags;
+
−	Bool isfloating;
+
−	int monitor;
+
−} Rule;
+
−
+
−/* function declarations */
+
−static void applyrules(Client *c);
+
−static Bool applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact);
+
−static void arrange(Monitor *m);
+
−static void arrangemon(Monitor *m);
+
−static void attach(Client *c);
+
−static void attachstack(Client *c);
+
−static void buttonpress(XEvent *e);
+
−static void checkotherwm(void);
+
−static void cleanup(void);
+
−static void cleanupmon(Monitor *mon);
+
−static void clearurgent(Client *c);
+
−static void configure(Client *c);
+
−static void configurenotify(XEvent *e);
+
−static void configurerequest(XEvent *e);
+
−static Monitor *createmon(void);
+
−static void destroynotify(XEvent *e);
+
−static void detach(Client *c);
+
−static void detachstack(Client *c);
+
−static void die(const char *errstr, ...);
+
−static Monitor *dirtomon(int dir);
+
−static void drawbar(Monitor *m);
+
−static void drawbars(void);
+
−static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
+
−static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
+
−static void enternotify(XEvent *e);
+
−static void expose(XEvent *e);
+
−static void focus(Client *c);
+
−static void focusin(XEvent *e);
+
−static void focusmon(const Arg *arg);
+
−static void focusstack(const Arg *arg);
+
−static unsigned long getcolor(const char *colstr);
+
−static Bool getrootptr(int *x, int *y);
+
−static long getstate(Window w);
+
−static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
+
−static void grabbuttons(Client *c, Bool focused);
+
−static void grabkeys(void);
+
−static void initfont(const char *fontstr);
+
−static Bool isprotodel(Client *c);
+
−static void keypress(XEvent *e);
+
−static void killclient(const Arg *arg);
+
−static void manage(Window w, XWindowAttributes *wa);
+
−static void mappingnotify(XEvent *e);
+
−static void maprequest(XEvent *e);
+
−static void monocle(Monitor *m);
+
−static void movemouse(const Arg *arg);
+
−static Client *nexttiled(Client *c);
+
−static Monitor *ptrtomon(int x, int y);
+
−static void propertynotify(XEvent *e);
+
−static void quit(const Arg *arg);
+
−static void resize(Client *c, int x, int y, int w, int h, Bool interact);
+
−static void resizemouse(const Arg *arg);
+
−static void restack(Monitor *m);
+
−static void run(void);
+
−static void scan(void);
+
−static void sendmon(Client *c, Monitor *m);
+
−static void setclientstate(Client *c, long state);
+
−static void setlayout(const Arg *arg);
+
−static void setmfact(const Arg *arg);
+
−static void setup(void);
+
−static void showhide(Client *c);
+
−static void sigchld(int unused);
+
−static void spawn(const Arg *arg);
+
−static void tag(const Arg *arg);
+
−static void tagmon(const Arg *arg);
+
−static int textnw(const char *text, unsigned int len);
+
−static void tile(Monitor *);
+
−static void togglebar(const Arg *arg);
+
−static void togglefloating(const Arg *arg);
+
−static void toggletag(const Arg *arg);
+
−static void toggleview(const Arg *arg);
+
−static void unfocus(Client *c);
+
−static void unmanage(Client *c, Bool destroyed);
+
−static void unmapnotify(XEvent *e);
+
−static Bool updategeom(void);
+
−static void updatebarpos(Monitor *m);
+
−static void updatebars(void);
+
−static void updatenumlockmask(void);
+
−static void updatesizehints(Client *c);
+
−static void updatestatus(void);
+
−static void updatetitle(Client *c);
+
−static void updatewmhints(Client *c);
+
−static void view(const Arg *arg);
+
−static Client *wintoclient(Window w);
+
−static Monitor *wintomon(Window w);
+
−static int xerror(Display *dpy, XErrorEvent *ee);
+
−static int xerrordummy(Display *dpy, XErrorEvent *ee);
+
−static int xerrorstart(Display *dpy, XErrorEvent *ee);
+
−static void zoom(const Arg *arg);
+
−
+
−/* variables */
+
−static const char broken[] = "broken";
+
−static char stext[256];
+
−static int screen;
+
−static int sw, sh;           /* X display screen geometry width, height */
+
−static int bh, blw = 0;      /* bar geometry */
+
−static int (*xerrorxlib)(Display *, XErrorEvent *);
+
−static unsigned int numlockmask = 0;
+
−static void (*handler[LASTEvent]) (XEvent *) = {
+
−	[ButtonPress] = buttonpress,
+
−	[ConfigureRequest] = configurerequest,
+
−	[ConfigureNotify] = configurenotify,
+
−	[DestroyNotify] = destroynotify,
+
−	[EnterNotify] = enternotify,
+
−	[Expose] = expose,
+
−	[FocusIn] = focusin,
+
−	[KeyPress] = keypress,
+
−	[MappingNotify] = mappingnotify,
+
−	[MapRequest] = maprequest,
+
−	[PropertyNotify] = propertynotify,
+
−	[UnmapNotify] = unmapnotify
+
−};
+
−static Atom wmatom[WMLast], netatom[NetLast];
+
−static Bool otherwm;
+
−static Bool running = True;
+
−static Cursor cursor[CurLast];
+
−static Display *dpy;
+
−static DC dc;
+
−static Monitor *mons = NULL, *selmon = NULL;
+
−static Window root;
+
−
+
−/* configuration, allows nested code to access above variables */
+
−#include "config.h"
+
−
+
−/* compile-time check if all tags fit into an unsigned int bit array. */
+
−struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
+
−
+
−/* function implementations */
+
−void
+
−applyrules(Client *c) {
+
−	const char *class, *instance;
+
−	unsigned int i;
+
−	const Rule *r;
+
−	Monitor *m;
+
−	XClassHint ch = { 0 };
+
−
+
−	/* rule matching */
+
−	c->isfloating = c->tags = 0;
+
−	if(XGetClassHint(dpy, c->win, &ch)) {
+
−		class = ch.res_class ? ch.res_class : broken;
+
−		instance = ch.res_name ? ch.res_name : broken;
+
−		for(i = 0; i < LENGTH(rules); i++) {
+
−			r = &rules[i];
+
−			if((!r->title || strstr(c->name, r->title))
+
−			&& (!r->class || strstr(class, r->class))
+
−			&& (!r->instance || strstr(instance, r->instance)))
+
−			{
+
−				c->isfloating = r->isfloating;
+
−				c->tags |= r->tags;
+
−				for(m = mons; m && m->num != r->monitor; m = m->next);
+
−				if(m)
+
−					c->mon = m;
+
−			}
+
−		}
+
−		if(ch.res_class)
+
−			XFree(ch.res_class);
+
−		if(ch.res_name)
+
−			XFree(ch.res_name);
+
−	}
+
−	c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : c->mon->tagset[c->mon->seltags];
+
−}
+
−
+
−Bool
+
−applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact) {
+
−	Bool baseismin;
+
−	Monitor *m = c->mon;
+
−
+
−	/* set minimum possible */
+
−	*w = MAX(1, *w);
+
−	*h = MAX(1, *h);
+
−	if(interact) {
+
−		if(*x > sw)
+
−			*x = sw - WIDTH(c);
+
−		if(*y > sh)
+
−			*y = sh - HEIGHT(c);
+
−		if(*x + *w + 2 * c->bw < 0)
+
−			*x = 0;
+
−		if(*y + *h + 2 * c->bw < 0)
+
−			*y = 0;
+
−	}
+
−	else {
+
−		if(*x > m->mx + m->mw)
+
−			*x = m->mx + m->mw - WIDTH(c);
+
−		if(*y > m->my + m->mh)
+
−			*y = m->my + m->mh - HEIGHT(c);
+
−		if(*x + *w + 2 * c->bw < m->mx)
+
−			*x = m->mx;
+
−		if(*y + *h + 2 * c->bw < m->my)
+
−			*y = m->my;
+
−	}
+
−	if(*h < bh)
+
−		*h = bh;
+
−	if(*w < bh)
+
−		*w = bh;
+
−	if(resizehints || c->isfloating) {
+
−		/* see last two sentences in ICCCM 4.1.2.3 */
+
−		baseismin = c->basew == c->minw && c->baseh == c->minh;
+
−		if(!baseismin) { /* temporarily remove base dimensions */
+
−			*w -= c->basew;
+
−			*h -= c->baseh;
+
−		}
+
−		/* adjust for aspect limits */
+
−		if(c->mina > 0 && c->maxa > 0) {
+
−			if(c->maxa < (float)*w / *h)
+
−				*w = *h * c->maxa + 0.5;
+
−			else if(c->mina < (float)*h / *w)
+
−				*h = *w * c->mina + 0.5;
+
−		}
+
−		if(baseismin) { /* increment calculation requires this */
+
−			*w -= c->basew;
+
−			*h -= c->baseh;
+
−		}
+
−		/* adjust for increment value */
+
−		if(c->incw)
+
−			*w -= *w % c->incw;
+
−		if(c->inch)
+
−			*h -= *h % c->inch;
+
−		/* restore base dimensions */
+
−		*w += c->basew;
+
−		*h += c->baseh;
+
−		*w = MAX(*w, c->minw);
+
−		*h = MAX(*h, c->minh);
+
−		if(c->maxw)
+
−			*w = MIN(*w, c->maxw);
+
−		if(c->maxh)
+
−			*h = MIN(*h, c->maxh);
+
−	}
+
−	return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
+
−}
+
−
+
−void
+
−arrange(Monitor *m) {
+
−	if(m)
+
−		showhide(m->stack);
+
−	else for(m = mons; m; m = m->next)
+
−		showhide(m->stack);
+
−	focus(NULL);
+
−	if(m)
+
−		arrangemon(m);
+
−	else for(m = mons; m; m = m->next)
+
−		arrangemon(m);
+
−}
+
−
+
−void
+
−arrangemon(Monitor *m) {
+
−	strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
+
−	if(m->lt[m->sellt]->arrange)
+
−		m->lt[m->sellt]->arrange(m);
+
−	restack(m);
+
−}
+
−
+
−void
+
−attach(Client *c) {
+
−	c->next = c->mon->clients;
+
−	c->mon->clients = c;
+
−}
+
−
+
−void
+
−attachstack(Client *c) {
+
−	c->snext = c->mon->stack;
+
−	c->mon->stack = c;
+
−}
+
−
+
−void
+
−buttonpress(XEvent *e) {
+
−	unsigned int i, x, click;
+
−	Arg arg = {0};
+
−	Client *c;
+
−	Monitor *m;
+
−	XButtonPressedEvent *ev = &e->xbutton;
+
−
+
−	click = ClkRootWin;
+
−	/* focus monitor if necessary */
+
−	if((m = wintomon(ev->window)) && m != selmon) {
+
−		unfocus(selmon->sel);
+
−		selmon = m;
+
−		focus(NULL);
+
−	}
+
−	if(ev->window == selmon->barwin) {
+
−		i = x = 0;
+
−		do {
+
−			x += TEXTW(tags[i]);
+
−		} while(ev->x >= x && ++i < LENGTH(tags));
+
−		if(i < LENGTH(tags)) {
+
−			click = ClkTagBar;
+
−			arg.ui = 1 << i;
+
−		}
+
−		else if(ev->x < x + blw)
+
−			click = ClkLtSymbol;
+
−		else if(ev->x > selmon->wx + selmon->ww - TEXTW(stext))
+
−			click = ClkStatusText;
+
−		else
+
−			click = ClkWinTitle;
+
−	}
+
−	else if((c = wintoclient(ev->window))) {
+
−		focus(c);
+
−		click = ClkClientWin;
+
−	}
+
−	for(i = 0; i < LENGTH(buttons); i++)
+
−		if(click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
+
−		&& CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state))
+
−			buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
+
−}
+
−
+
−void
+
−checkotherwm(void) {
+
−	otherwm = False;
+
−	xerrorxlib = XSetErrorHandler(xerrorstart);
+
−	/* this causes an error if some other window manager is running */
+
−	XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
+
−	XSync(dpy, False);
+
−	if(otherwm)
+
−		die("dwm: another window manager is already running\n");
+
−	XSetErrorHandler(xerror);
+
−	XSync(dpy, False);
+
−}
+
−
+
−void
+
−cleanup(void) {
+
−	Arg a = {.ui = ~0};
+
−	Layout foo = { "", NULL };
+
−	Monitor *m;
+
−
+
−	view(&a);
+
−	selmon->lt[selmon->sellt] = &foo;
+
−	for(m = mons; m; m = m->next)
+
−		while(m->stack)
+
−			unmanage(m->stack, False);
+
−	if(dc.font.set)
+
−		XFreeFontSet(dpy, dc.font.set);
+
−	else
+
−		XFreeFont(dpy, dc.font.xfont);
+
−	XUngrabKey(dpy, AnyKey, AnyModifier, root);
+
−	XFreePixmap(dpy, dc.drawable);
+
−	XFreeGC(dpy, dc.gc);
+
−	XFreeCursor(dpy, cursor[CurNormal]);
+
−	XFreeCursor(dpy, cursor[CurResize]);
+
−	XFreeCursor(dpy, cursor[CurMove]);
+
−	while(mons)
+
−		cleanupmon(mons);
+
−	XSync(dpy, False);
+
−	XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
+
−}
+
−
+
−void
+
−cleanupmon(Monitor *mon) {
+
−	Monitor *m;
+
−
+
−	if(mon == mons)
+
−		mons = mons->next;
+
−	else {
+
−		for(m = mons; m && m->next != mon; m = m->next);
+
−		m->next = mon->next;
+
−	}
+
−	XUnmapWindow(dpy, mon->barwin);
+
−	XDestroyWindow(dpy, mon->barwin);
+
−	free(mon);
+
−}
+
−
+
−void
+
−clearurgent(Client *c) {
+
−	XWMHints *wmh;
+
−
+
−	c->isurgent = False;
+
−	if(!(wmh = XGetWMHints(dpy, c->win)))
+
−		return;
+
−	wmh->flags &= ~XUrgencyHint;
+
−	XSetWMHints(dpy, c->win, wmh);
+
−	XFree(wmh);
+
−}
+
−
+
−void
+
−configure(Client *c) {
+
−	XConfigureEvent ce;
+
−
+
−	ce.type = ConfigureNotify;
+
−	ce.display = dpy;
+
−	ce.event = c->win;
+
−	ce.window = c->win;
+
−	ce.x = c->x;
+
−	ce.y = c->y;
+
−	ce.width = c->w;
+
−	ce.height = c->h;
+
−	ce.border_width = c->bw;
+
−	ce.above = None;
+
−	ce.override_redirect = False;
+
−	XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
+
−}
+
−
+
−void
+
−configurenotify(XEvent *e) {
+
−	Monitor *m;
+
−	XConfigureEvent *ev = &e->xconfigure;
+
−
+
−	if(ev->window == root) {
+
−		sw = ev->width;
+
−		sh = ev->height;
+
−		if(updategeom()) {
+
−			if(dc.drawable != 0)
+
−				XFreePixmap(dpy, dc.drawable);
+
−			dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
+
−			updatebars();
+
−			for(m = mons; m; m = m->next)
+
−				XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
+
−			arrange(NULL);
+
−		}
+
−	}
+
−}
+
−
+
−void
+
−configurerequest(XEvent *e) {
+
−	Client *c;
+
−	Monitor *m;
+
−	XConfigureRequestEvent *ev = &e->xconfigurerequest;
+
−	XWindowChanges wc;
+
−
+
−	if((c = wintoclient(ev->window))) {
+
−		if(ev->value_mask & CWBorderWidth)
+
−			c->bw = ev->border_width;
+
−		else if(c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
+
−			m = c->mon;
+
−			if(ev->value_mask & CWX)
+
−				c->x = m->mx + ev->x;
+
−			if(ev->value_mask & CWY)
+
−				c->y = m->my + ev->y;
+
−			if(ev->value_mask & CWWidth)
+
−				c->w = ev->width;
+
−			if(ev->value_mask & CWHeight)
+
−				c->h = ev->height;
+
−			if((c->x + c->w) > m->mx + m->mw && c->isfloating)
+
−				c->x = m->mx + (m->mw / 2 - c->w / 2); /* center in x direction */
+
−			if((c->y + c->h) > m->my + m->mh && c->isfloating)
+
−				c->y = m->my + (m->mh / 2 - c->h / 2); /* center in y direction */
+
−			if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
+
−				configure(c);
+
−			if(ISVISIBLE(c))
+
−				XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
+
−		}
+
−		else
+
−			configure(c);
+
−	}
+
−	else {
+
−		wc.x = ev->x;
+
−		wc.y = ev->y;
+
−		wc.width = ev->width;
+
−		wc.height = ev->height;
+
−		wc.border_width = ev->border_width;
+
−		wc.sibling = ev->above;
+
−		wc.stack_mode = ev->detail;
+
−		XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
+
−	}
+
−	XSync(dpy, False);
+
−}
+
−
+
−Monitor *
+
−createmon(void) {
+
−	Monitor *m;
+
−
+
−	if(!(m = (Monitor *)calloc(1, sizeof(Monitor))))
+
−		die("fatal: could not malloc() %u bytes\n", sizeof(Monitor));
+
−	m->tagset[0] = m->tagset[1] = 1;
+
−	m->mfact = mfact;
+
−	m->showbar = showbar;
+
−	m->topbar = topbar;
+
−	m->lt[0] = &layouts[0];
+
−	m->lt[1] = &layouts[1 % LENGTH(layouts)];
+
−	strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
+
−	return m;
+
−}
+
−
+
−void
+
−destroynotify(XEvent *e) {
+
−	Client *c;
+
−	XDestroyWindowEvent *ev = &e->xdestroywindow;
+
−
+
−	if((c = wintoclient(ev->window)))
+
−		unmanage(c, True);
+
−}
+
−
+
−void
+
−detach(Client *c) {
+
−	Client **tc;
+
−
+
−	for(tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
+
−	*tc = c->next;
+
−}
+
−
+
−void
+
−detachstack(Client *c) {
+
−	Client **tc, *t;
+
−
+
−	for(tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
+
−	*tc = c->snext;
+
−
+
−	if(c == c->mon->sel) {
+
−		for(t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
+
−		c->mon->sel = t;
+
−	}
+
−}
+
−
+
−void
+
−die(const char *errstr, ...) {
+
−	va_list ap;
+
−
+
−	va_start(ap, errstr);
+
−	vfprintf(stderr, errstr, ap);
+
−	va_end(ap);
+
−	exit(EXIT_FAILURE);
+
−}
+
−
+
−Monitor *
+
−dirtomon(int dir) {
+
−	Monitor *m = NULL;
+
−
+
−	if(dir > 0) {
+
−		if(!(m = selmon->next))
+
−			m = mons;
+
−	}
+
−	else {
+
−		if(selmon == mons)
+
−			for(m = mons; m->next; m = m->next);
+
−		else
+
−			for(m = mons; m->next != selmon; m = m->next);
+
−	}
+
−	return m;
+
−}
+
−
+
−void
+
−drawbar(Monitor *m) {
+
−	int x;
+
−	unsigned int i, occ = 0, urg = 0;
+
−	unsigned long *col;
+
−	Client *c;
+
−
+
−	for(c = m->clients; c; c = c->next) {
+
−		occ |= c->tags;
+
−		if(c->isurgent)
+
−			urg |= c->tags;
+
−	}
+
−	dc.x = 0;
+
−	for(i = 0; i < LENGTH(tags); i++) {
+
−		dc.w = TEXTW(tags[i]);
+
−		col = m->tagset[m->seltags] & 1 << i ? dc.sel : dc.norm;
+
−		drawtext(tags[i], col, urg & 1 << i);
+
−		drawsquare(m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
+
−		           occ & 1 << i, urg & 1 << i, col);
+
−		dc.x += dc.w;
+
−	}
+
−	dc.w = blw = TEXTW(m->ltsymbol);
+
−	drawtext(m->ltsymbol, dc.norm, False);
+
−	dc.x += dc.w;
+
−	x = dc.x;
+
−	if(m == selmon) { /* status is only drawn on selected monitor */
+
−		dc.w = TEXTW(stext);
+
−		dc.x = m->ww - dc.w;
+
−		if(dc.x < x) {
+
−			dc.x = x;
+
−			dc.w = m->ww - x;
+
−		}
+
−		drawtext(stext, dc.norm, False);
+
−	}
+
−	else
+
−		dc.x = m->ww;
+
−	if((dc.w = dc.x - x) > bh) {
+
−		dc.x = x;
+
−		if(m->sel) {
+
−			col = m == selmon ? dc.sel : dc.norm;
+
−			drawtext(m->sel->name, col, False);
+
−			drawsquare(m->sel->isfixed, m->sel->isfloating, False, col);
+
−		}
+
−		else
+
−			drawtext(NULL, dc.norm, False);
+
−	}
+
−	XCopyArea(dpy, dc.drawable, m->barwin, dc.gc, 0, 0, m->ww, bh, 0, 0);
+
−	XSync(dpy, False);
+
−}
+
−
+
−void
+
−drawbars(void) {
+
−	Monitor *m;
+
−
+
−	for(m = mons; m; m = m->next)
+
−		drawbar(m);
+
−}
+
−
+
−void
+
−drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
+
−	int x;
+
−	XGCValues gcv;
+
−	XRectangle r = { dc.x, dc.y, dc.w, dc.h };
+
−
+
−	gcv.foreground = col[invert ? ColBG : ColFG];
+
−	XChangeGC(dpy, dc.gc, GCForeground, &gcv);
+
−	x = (dc.font.ascent + dc.font.descent + 2) / 4;
+
−	r.x = dc.x + 1;
+
−	r.y = dc.y + 1;
+
−	if(filled) {
+
−		r.width = r.height = x + 1;
+
−		XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
+
−	}
+
−	else if(empty) {
+
−		r.width = r.height = x;
+
−		XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
+
−	}
+
−}
+
−
+
−void
+
−drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
+
−	char buf[256];
+
−	int i, x, y, h, len, olen;
+
−	XRectangle r = { dc.x, dc.y, dc.w, dc.h };
+
−
+
−	XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
+
−	XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
+
−	if(!text)
+
−		return;
+
−	olen = strlen(text);
+
−	h = dc.font.ascent + dc.font.descent;
+
−	y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
+
−	x = dc.x + (h / 2);
+
−	/* shorten text if necessary */
+
−	for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
+
−	if(!len)
+
−		return;
+
−	memcpy(buf, text, len);
+
−	if(len < olen)
+
−		for(i = len; i && i > len - 3; buf[--i] = '.');
+
−	XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
+
−	if(dc.font.set)
+
−		XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
+
−	else
+
−		XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
+
−}
+
−
+
−void
+
−enternotify(XEvent *e) {
+
−	Client *c;
+
−	Monitor *m;
+
−	XCrossingEvent *ev = &e->xcrossing;
+
−
+
−	if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
+
−		return;
+
−	if((m = wintomon(ev->window)) && m != selmon) {
+
−		unfocus(selmon->sel);
+
−		selmon = m;
+
−	}
+
−	if((c = wintoclient(ev->window)))
+
−		focus(c);
+
−	else
+
−		focus(NULL);
+
−}
+
−
+
−void
+
−expose(XEvent *e) {
+
−	Monitor *m;
+
−	XExposeEvent *ev = &e->xexpose;
+
−
+
−	if(ev->count == 0 && (m = wintomon(ev->window)))
+
−		drawbar(m);
+
−}
+
−
+
−void
+
−focus(Client *c) {
+
−	if(!c || !ISVISIBLE(c))
+
−		for(c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
+
−	if(selmon->sel)
+
−		unfocus(selmon->sel);
+
−	if(c) {
+
−		if(c->mon != selmon)
+
−			selmon = c->mon;
+
−		if(c->isurgent)
+
−			clearurgent(c);
+
−		detachstack(c);
+
−		attachstack(c);
+
−		grabbuttons(c, True);
+
−		XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
+
−		XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
+
−	}
+
−	else
+
−		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
+
−	selmon->sel = c;
+
−	drawbars();
+
−}
+
−
+
−void
+
−focusin(XEvent *e) { /* there are some broken focus acquiring clients */
+
−	XFocusChangeEvent *ev = &e->xfocus;
+
−
+
−	if(selmon->sel && ev->window != selmon->sel->win)
+
−		XSetInputFocus(dpy, selmon->sel->win, RevertToPointerRoot, CurrentTime);
+
−}
+
−
+
−void
+
−focusmon(const Arg *arg) {
+
−	Monitor *m = NULL;
+
−
+
−	if(!mons->next)
+
−		return;
+
−	m = dirtomon(arg->i);
+
−	unfocus(selmon->sel);
+
−	selmon = m;
+
−	focus(NULL);
+
−}
+
−
+
−void
+
−focusstack(const Arg *arg) {
+
−	Client *c = NULL, *i;
+
−
+
−	if(!selmon->sel)
+
−		return;
+
−	if(arg->i > 0) {
+
−		for(c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
+
−		if(!c)
+
−			for(c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
+
−	}
+
−	else {
+
−		for(i = selmon->clients; i != selmon->sel; i = i->next)
+
−			if(ISVISIBLE(i))
+
−				c = i;
+
−		if(!c)
+
−			for(; i; i = i->next)
+
−				if(ISVISIBLE(i))
+
−					c = i;
+
−	}
+
−	if(c) {
+
−		focus(c);
+
−		restack(selmon);
+
−	}
+
−}
+
−
+
−unsigned long
+
−getcolor(const char *colstr) {
+
−	Colormap cmap = DefaultColormap(dpy, screen);
+
−	XColor color;
+
−
+
−	if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
+
−		die("error, cannot allocate color '%s'\n", colstr);
+
−	return color.pixel;
+
−}
+
−
+
−Bool
+
−getrootptr(int *x, int *y) {
+
−	int di;
+
−	unsigned int dui;
+
−	Window dummy;
+
−
+
−	return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
+
−}
+
−
+
−long
+
−getstate(Window w) {
+
−	int format, status;
+
−	long result = -1;
+
−	unsigned char *p = NULL;
+
−	unsigned long n, extra;
+
−	Atom real;
+
−
+
−	status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
+
−	                            &real, &format, &n, &extra, (unsigned char **)&p);
+
−	if(status != Success)
+
−		return -1;
+
−	if(n != 0)
+
−		result = *p;
+
−	XFree(p);
+
−	return result;
+
−}
+
−
+
−Bool
+
−gettextprop(Window w, Atom atom, char *text, unsigned int size) {
+
−	char **list = NULL;
+
−	int n;
+
−	XTextProperty name;
+
−
+
−	if(!text || size == 0)
+
−		return False;
+
−	text[0] = '\0';
+
−	XGetTextProperty(dpy, w, &name, atom);
+
−	if(!name.nitems)
+
−		return False;
+
−	if(name.encoding == XA_STRING)
+
−		strncpy(text, (char *)name.value, size - 1);
+
−	else {
+
−		if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
+
−			strncpy(text, *list, size - 1);
+
−			XFreeStringList(list);
+
−		}
+
−	}
+
−	text[size - 1] = '\0';
+
−	XFree(name.value);
+
−	return True;
+
−}
+
−
+
−void
+
−grabbuttons(Client *c, Bool focused) {
+
−	updatenumlockmask();
+
−	{
+
−		unsigned int i, j;
+
−		unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
+
−		XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
+
−		if(focused) {
+
−			for(i = 0; i < LENGTH(buttons); i++)
+
−				if(buttons[i].click == ClkClientWin)
+
−					for(j = 0; j < LENGTH(modifiers); j++)
+
−						XGrabButton(dpy, buttons[i].button,
+
−						            buttons[i].mask | modifiers[j],
+
−						            c->win, False, BUTTONMASK,
+
−						            GrabModeAsync, GrabModeSync, None, None);
+
−		}
+
−		else
+
−			XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
+
−			            BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
+
−	}
+
−}
+
−
+
−void
+
−grabkeys(void) {
+
−	updatenumlockmask();
+
−	{
+
−		unsigned int i, j;
+
−		unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
+
−		KeyCode code;
+
−
+
−		XUngrabKey(dpy, AnyKey, AnyModifier, root);
+
−		for(i = 0; i < LENGTH(keys); i++) {
+
−			if((code = XKeysymToKeycode(dpy, keys[i].keysym)))
+
−				for(j = 0; j < LENGTH(modifiers); j++)
+
−					XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
+
−						 True, GrabModeAsync, GrabModeAsync);
+
−		}
+
−	}
+
−}
+
−
+
−void
+
−initfont(const char *fontstr) {
+
−	char *def, **missing;
+
−	int i, n;
+
−
+
−	missing = NULL;
+
−	dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
+
−	if(missing) {
+
−		while(n--)
+
−			fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
+
−		XFreeStringList(missing);
+
−	}
+
−	if(dc.font.set) {
+
−		XFontSetExtents *font_extents;
+
−		XFontStruct **xfonts;
+
−		char **font_names;
+
−
+
−		dc.font.ascent = dc.font.descent = 0;
+
−		font_extents = XExtentsOfFontSet(dc.font.set);
+
−		n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
+
−		for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
+
−			dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
+
−			dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
+
−			xfonts++;
+
−		}
+
−	}
+
−	else {
+
−		if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
+
−		&& !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
+
−			die("error, cannot load font: '%s'\n", fontstr);
+
−		dc.font.ascent = dc.font.xfont->ascent;
+
−		dc.font.descent = dc.font.xfont->descent;
+
−	}
+
−	dc.font.height = dc.font.ascent + dc.font.descent;
+
−}
+
−
+
−Bool
+
−isprotodel(Client *c) {
+
−	int i, n;
+
−	Atom *protocols;
+
−	Bool ret = False;
+
−
+
−	if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
+
−		for(i = 0; !ret && i < n; i++)
+
−			if(protocols[i] == wmatom[WMDelete])
+
−				ret = True;
+
−		XFree(protocols);
+
−	}
+
−	return ret;
+
−}
+
−
+
−#ifdef XINERAMA
+
−static Bool
+
−isuniquegeom(XineramaScreenInfo *unique, size_t len, XineramaScreenInfo *info) {
+
−	unsigned int i;
+
−
+
−	for(i = 0; i < len; i++)
+
−		if(unique[i].x_org == info->x_org && unique[i].y_org == info->y_org
+
−		&& unique[i].width == info->width && unique[i].height == info->height)
+
−			return False;
+
−	return True;
+
−}
+
−#endif /* XINERAMA */
+
−
+
−void
+
−keypress(XEvent *e) {
+
−	unsigned int i;
+
−	KeySym keysym;
+
−	XKeyEvent *ev;
+
−
+
−	ev = &e->xkey;
+
−	keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
+
−	for(i = 0; i < LENGTH(keys); i++)
+
−		if(keysym == keys[i].keysym
+
−		&& CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
+
−		&& keys[i].func)
+
−			keys[i].func(&(keys[i].arg));
+
−}
+
−
+
−void
+
−killclient(const Arg *arg) {
+
−	XEvent ev;
+
−
+
−	if(!selmon->sel)
+
−		return;
+
−	if(isprotodel(selmon->sel)) {
+
−		ev.type = ClientMessage;
+
−		ev.xclient.window = selmon->sel->win;
+
−		ev.xclient.message_type = wmatom[WMProtocols];
+
−		ev.xclient.format = 32;
+
−		ev.xclient.data.l[0] = wmatom[WMDelete];
+
−		ev.xclient.data.l[1] = CurrentTime;
+
−		XSendEvent(dpy, selmon->sel->win, False, NoEventMask, &ev);
+
−	}
+
−	else {
+
−		XGrabServer(dpy);
+
−		XSetErrorHandler(xerrordummy);
+
−		XSetCloseDownMode(dpy, DestroyAll);
+
−		XKillClient(dpy, selmon->sel->win);
+
−		XSync(dpy, False);
+
−		XSetErrorHandler(xerror);
+
−		XUngrabServer(dpy);
+
−	}
+
−}
+
−
+
−void
+
−manage(Window w, XWindowAttributes *wa) {
+
−	static Client cz;
+
−	Client *c, *t = NULL;
+
−	Window trans = None;
+
−	XWindowChanges wc;
+
−
+
−	if(!(c = malloc(sizeof(Client))))
+
−		die("fatal: could not malloc() %u bytes\n", sizeof(Client));
+
−	*c = cz;
+
−	c->win = w;
+
−	updatetitle(c);
+
−	if(XGetTransientForHint(dpy, w, &trans))
+
−		t = wintoclient(trans);
+
−	if(t) {
+
−		c->mon = t->mon;
+
−		c->tags = t->tags;
+
−	}
+
−	else {
+
−		c->mon = selmon;
+
−		applyrules(c);
+
−	}
+
−	/* geometry */
+
−	c->x = wa->x + c->mon->wx;
+
−	c->y = wa->y + c->mon->wy;
+
−	c->w = wa->width;
+
−	c->h = wa->height;
+
−	c->oldbw = wa->border_width;
+
−	if(c->w == c->mon->mw && c->h == c->mon->mh) {
+
−		c->x = c->mon->mx;
+
−		c->y = c->mon->my;
+
−		c->bw = 0;
+
−	}
+
−	else {
+
−		if(c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
+
−			c->x = c->mon->mx + c->mon->mw - WIDTH(c);
+
−		if(c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
+
−			c->y = c->mon->my + c->mon->mh - HEIGHT(c);
+
−		c->x = MAX(c->x, c->mon->mx);
+
−		/* only fix client y-offset, if the client center might cover the bar */
+
−		c->y = MAX(c->y, ((c->mon->by == 0) && (c->x + (c->w / 2) >= c->mon->wx)
+
−		           && (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
+
−		c->bw = borderpx;
+
−	}
+
−	wc.border_width = c->bw;
+
−	XConfigureWindow(dpy, w, CWBorderWidth, &wc);
+
−	XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
+
−	configure(c); /* propagates border_width, if size doesn't change */
+
−	updatesizehints(c);
+
−	XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
+
−	grabbuttons(c, False);
+
−	if(!c->isfloating)
+
−		c->isfloating = trans != None || c->isfixed;
+
−	if(c->isfloating)
+
−		XRaiseWindow(dpy, c->win);
+
−	attach(c);
+
−	attachstack(c);
+
−	XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
+
−	XMapWindow(dpy, c->win);
+
−	setclientstate(c, NormalState);
+
−	arrange(c->mon);
+
−}
+
−
+
−void
+
−mappingnotify(XEvent *e) {
+
−	XMappingEvent *ev = &e->xmapping;
+
−
+
−	XRefreshKeyboardMapping(ev);
+
−	if(ev->request == MappingKeyboard)
+
−		grabkeys();
+
−}
+
−
+
−void
+
−maprequest(XEvent *e) {
+
−	static XWindowAttributes wa;
+
−	XMapRequestEvent *ev = &e->xmaprequest;
+
−
+
−	if(!XGetWindowAttributes(dpy, ev->window, &wa))
+
−		return;
+
−	if(wa.override_redirect)
+
−		return;
+
−	if(!wintoclient(ev->window))
+
−		manage(ev->window, &wa);
+
−}
+
−
+
−void
+
−monocle(Monitor *m) {
+
−	unsigned int n = 0;
+
−	Client *c;
+
−
+
−	for(c = m->clients; c; c = c->next)
+
−		if(ISVISIBLE(c))
+
−			n++;
+
−	if(n > 0) /* override layout symbol */
+
−		snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
+
−	for(c = nexttiled(m->clients); c; c = nexttiled(c->next))
+
−		resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, False);
+
−}
+
−
+
−void
+
−movemouse(const Arg *arg) {
+
−	int x, y, ocx, ocy, nx, ny;
+
−	Client *c;
+
−	Monitor *m;
+
−	XEvent ev;
+
−
+
−	if(!(c = selmon->sel))
+
−		return;
+
−	restack(selmon);
+
−	ocx = c->x;
+
−	ocy = c->y;
+
−	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
+
−	None, cursor[CurMove], CurrentTime) != GrabSuccess)
+
−		return;
+
−	if(!getrootptr(&x, &y))
+
−		return;
+
−	do {
+
−		XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
+
−		switch (ev.type) {
+
−		case ConfigureRequest:
+
−		case Expose:
+
−		case MapRequest:
+
−			handler[ev.type](&ev);
+
−			break;
+
−		case MotionNotify:
+
−			nx = ocx + (ev.xmotion.x - x);
+
−			ny = ocy + (ev.xmotion.y - y);
+
−			if(snap && nx >= selmon->wx && nx <= selmon->wx + selmon->ww
+
−			&& ny >= selmon->wy && ny <= selmon->wy + selmon->wh) {
+
−				if(abs(selmon->wx - nx) < snap)
+
−					nx = selmon->wx;
+
−				else if(abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
+
−					nx = selmon->wx + selmon->ww - WIDTH(c);
+
−				if(abs(selmon->wy - ny) < snap)
+
−					ny = selmon->wy;
+
−				else if(abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
+
−					ny = selmon->wy + selmon->wh - HEIGHT(c);
+
−				if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
+
−				&& (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
+
−					togglefloating(NULL);
+
−			}
+
−			if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
+
−				resize(c, nx, ny, c->w, c->h, True);
+
−			break;
+
−		}
+
−	} while(ev.type != ButtonRelease);
+
−	XUngrabPointer(dpy, CurrentTime);
+
−	if((m = ptrtomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
+
−		sendmon(c, m);
+
−		selmon = m;
+
−		focus(NULL);
+
−	}
+
−}
+
−
+
−Client *
+
−nexttiled(Client *c) {
+
−	for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
+
−	return c;
+
−}
+
−
+
−Monitor *
+
−ptrtomon(int x, int y) {
+
−	Monitor *m;
+
−
+
−	for(m = mons; m; m = m->next)
+
−		if(INRECT(x, y, m->wx, m->wy, m->ww, m->wh))
+
−			return m;
+
−	return selmon;
+
−}
+
−
+
−void
+
−propertynotify(XEvent *e) {
+
−	Client *c;
+
−	Window trans;
+
−	XPropertyEvent *ev = &e->xproperty;
+
−
+
−	if((ev->window == root) && (ev->atom == XA_WM_NAME))
+
−		updatestatus();
+
−	else if(ev->state == PropertyDelete)
+
−		return; /* ignore */
+
−	else if((c = wintoclient(ev->window))) {
+
−		switch (ev->atom) {
+
−		default: break;
+
−		case XA_WM_TRANSIENT_FOR:
+
−			XGetTransientForHint(dpy, c->win, &trans);
+
−			if(!c->isfloating && (c->isfloating = (wintoclient(trans) != NULL)))
+
−				arrange(c->mon);
+
−			break;
+
−		case XA_WM_NORMAL_HINTS:
+
−			updatesizehints(c);
+
−			break;
+
−		case XA_WM_HINTS:
+
−			updatewmhints(c);
+
−			drawbars();
+
−			break;
+
−		}
+
−		if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
+
−			updatetitle(c);
+
−			if(c == c->mon->sel)
+
−				drawbar(c->mon);
+
−		}
+
−	}
+
−}
+
−
+
−void
+
−quit(const Arg *arg) {
+
−	running = False;
+
−}
+
−
+
−void
+
−resize(Client *c, int x, int y, int w, int h, Bool interact) {
+
−	XWindowChanges wc;
+
−
+
−	if(applysizehints(c, &x, &y, &w, &h, interact)) {
+
−		c->x = wc.x = x;
+
−		c->y = wc.y = y;
+
−		c->w = wc.width = w;
+
−		c->h = wc.height = h;
+
−		wc.border_width = c->bw;
+
−		XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
+
−		configure(c);
+
−		XSync(dpy, False);
+
−	}
+
−}
+
−
+
−void
+
−resizemouse(const Arg *arg) {
+
−	int ocx, ocy;
+
−	int nw, nh;
+
−	Client *c;
+
−	Monitor *m;
+
−	XEvent ev;
+
−
+
−	if(!(c = selmon->sel))
+
−		return;
+
−	restack(selmon);
+
−	ocx = c->x;
+
−	ocy = c->y;
+
−	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
+
−	                None, cursor[CurResize], CurrentTime) != GrabSuccess)
+
−		return;
+
−	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
+
−	do {
+
−		XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
+
−		switch(ev.type) {
+
−		case ConfigureRequest:
+
−		case Expose:
+
−		case MapRequest:
+
−			handler[ev.type](&ev);
+
−			break;
+
−		case MotionNotify:
+
−			nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
+
−			nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
+
−			if(snap && nw >= selmon->wx && nw <= selmon->wx + selmon->ww
+
−			&& nh >= selmon->wy && nh <= selmon->wy + selmon->wh)
+
−			{
+
−				if(!c->isfloating && selmon->lt[selmon->sellt]->arrange
+
−				&& (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
+
−					togglefloating(NULL);
+
−			}
+
−			if(!selmon->lt[selmon->sellt]->arrange || c->isfloating)
+
−				resize(c, c->x, c->y, nw, nh, True);
+
−			break;
+
−		}
+
−	} while(ev.type != ButtonRelease);
+
−	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
+
−	XUngrabPointer(dpy, CurrentTime);
+
−	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
+
−	if((m = ptrtomon(c->x + c->w / 2, c->y + c->h / 2)) != selmon) {
+
−		sendmon(c, m);
+
−		selmon = m;
+
−		focus(NULL);
+
−	}
+
−}
+
−
+
−void
+
−restack(Monitor *m) {
+
−	Client *c;
+
−	XEvent ev;
+
−	XWindowChanges wc;
+
−
+
−	drawbar(m);
+
−	if(!m->sel)
+
−		return;
+
−	if(m->sel->isfloating || !m->lt[m->sellt]->arrange)
+
−		XRaiseWindow(dpy, m->sel->win);
+
−	if(m->lt[m->sellt]->arrange) {
+
−		wc.stack_mode = Below;
+
−		wc.sibling = m->barwin;
+
−		for(c = m->stack; c; c = c->snext)
+
−			if(!c->isfloating && ISVISIBLE(c)) {
+
−				XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
+
−				wc.sibling = c->win;
+
−			}
+
−	}
+
−	XSync(dpy, False);
+
−	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
+
−}
+
−
+
−void
+
−run(void) {
+
−	XEvent ev;
+
−
+
−	/* main event loop */
+
−	XSync(dpy, False);
+
−	while(running && !XNextEvent(dpy, &ev))
+
−		if(handler[ev.type])
+
−			handler[ev.type](&ev); /* call handler */
+
−}
+
−
+
−void
+
−scan(void) {
+
−	unsigned int i, num;
+
−	Window d1, d2, *wins = NULL;
+
−	XWindowAttributes wa;
+
−
+
−	if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
+
−		for(i = 0; i < num; i++) {
+
−			if(!XGetWindowAttributes(dpy, wins[i], &wa)
+
−			|| wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
+
−				continue;
+
−			if(wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
+
−				manage(wins[i], &wa);
+
−		}
+
−		for(i = 0; i < num; i++) { /* now the transients */
+
−			if(!XGetWindowAttributes(dpy, wins[i], &wa))
+
−				continue;
+
−			if(XGetTransientForHint(dpy, wins[i], &d1)
+
−			&& (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
+
−				manage(wins[i], &wa);
+
−		}
+
−		if(wins)
+
−			XFree(wins);
+
−	}
+
−}
+
−
+
−void
+
−sendmon(Client *c, Monitor *m) {
+
−	if(c->mon == m)
+
−		return;
+
−	unfocus(c);
+
−	detach(c);
+
−	detachstack(c);
+
−	c->mon = m;
+
−	c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
+
−	attach(c);
+
−	attachstack(c);
+
−	focus(NULL);
+
−	arrange(NULL);
+
−}
+
−
+
−void
+
−setclientstate(Client *c, long state) {
+
−	long data[] = { state, None };
+
−
+
−	XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
+
−			PropModeReplace, (unsigned char *)data, 2);
+
−}
+
−
+
−void
+
−setlayout(const Arg *arg) {
+
−	if(!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
+
−		selmon->sellt ^= 1;
+
−	if(arg && arg->v) {
+
−		selmon->lt[selmon->sellt] = (Layout *)arg->v;
+
−		strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
+
−	}
+
−	if(selmon->sel)
+
−		arrange(selmon);
+
−	else
+
−		drawbar(selmon);
+
−}
+
−
+
−/* arg > 1.0 will set mfact absolutly */
+
−void
+
−setmfact(const Arg *arg) {
+
−	float f;
+
−
+
−	if(!arg || !selmon->lt[selmon->sellt]->arrange)
+
−		return;
+
−	f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
+
−	if(f < 0.1 || f > 0.9)
+
−		return;
+
−	selmon->mfact = f;
+
−	arrange(selmon);
+
−}
+
−
+
−void
+
−setup(void) {
+
−	XSetWindowAttributes wa;
+
−
+
−	/* clean up any zombies immediately */
+
−	sigchld(0);
+
−
+
−	/* init screen */
+
−	screen = DefaultScreen(dpy);
+
−	root = RootWindow(dpy, screen);
+
−	initfont(font);
+
−	sw = DisplayWidth(dpy, screen);
+
−	sh = DisplayHeight(dpy, screen);
+
−	bh = dc.h = dc.font.height + 2;
+
−	updategeom();
+
−	/* init atoms */
+
−	wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
+
−	wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
+
−	wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
+
−	netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
+
−	netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
+
−	/* init cursors */
+
−	cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
+
−	cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
+
−	cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
+
−	/* init appearance */
+
−	dc.norm[ColBorder] = getcolor(normbordercolor);
+
−	dc.norm[ColBG] = getcolor(normbgcolor);
+
−	dc.norm[ColFG] = getcolor(normfgcolor);
+
−	dc.sel[ColBorder] = getcolor(selbordercolor);
+
−	dc.sel[ColBG] = getcolor(selbgcolor);
+
−	dc.sel[ColFG] = getcolor(selfgcolor);
+
−	dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
+
−	dc.gc = XCreateGC(dpy, root, 0, NULL);
+
−	XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
+
−	if(!dc.font.set)
+
−		XSetFont(dpy, dc.gc, dc.font.xfont->fid);
+
−	/* init bars */
+
−	updatebars();
+
−	updatestatus();
+
−	/* EWMH support per view */
+
−	XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
+
−			PropModeReplace, (unsigned char *) netatom, NetLast);
+
−	/* select for events */
+
−	wa.cursor = cursor[CurNormal];
+
−	wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask
+
−	                |EnterWindowMask|LeaveWindowMask|StructureNotifyMask
+
−	                |PropertyChangeMask;
+
−	XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
+
−	XSelectInput(dpy, root, wa.event_mask);
+
−	grabkeys();
+
−}
+
−
+
−void
+
−showhide(Client *c) {
+
−	if(!c)
+
−		return;
+
−	if(ISVISIBLE(c)) { /* show clients top down */
+
−		XMoveWindow(dpy, c->win, c->x, c->y);
+
−		if(!c->mon->lt[c->mon->sellt]->arrange || c->isfloating)
+
−			resize(c, c->x, c->y, c->w, c->h, False);
+
−		showhide(c->snext);
+
−	}
+
−	else { /* hide clients bottom up */
+
−		showhide(c->snext);
+
−		XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
+
−	}
+
−}
+
−
+
−
+
−void
+
−sigchld(int unused) {
+
−	if(signal(SIGCHLD, sigchld) == SIG_ERR)
+
−		die("Can't install SIGCHLD handler");
+
−	while(0 < waitpid(-1, NULL, WNOHANG));
+
−}
+
−
+
−void
+
−spawn(const Arg *arg) {
+
−	if(fork() == 0) {
+
−		if(dpy)
+
−			close(ConnectionNumber(dpy));
+
−		setsid();
+
−		execvp(((char **)arg->v)[0], (char **)arg->v);
+
−		fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
+
−		perror(" failed");
+
−		exit(0);
+
−	}
+
−}
+
−
+
−void
+
−tag(const Arg *arg) {
+
−	if(selmon->sel && arg->ui & TAGMASK) {
+
−		selmon->sel->tags = arg->ui & TAGMASK;
+
−		arrange(selmon);
+
−	}
+
−}
+
−
+
−void
+
−tagmon(const Arg *arg) {
+
−	if(!selmon->sel || !mons->next)
+
−		return;
+
−	sendmon(selmon->sel, dirtomon(arg->i));
+
−}
+
−
+
−int
+
−textnw(const char *text, unsigned int len) {
+
−	XRectangle r;
+
−
+
−	if(dc.font.set) {
+
−		XmbTextExtents(dc.font.set, text, len, NULL, &r);
+
−		return r.width;
+
−	}
+
−	return XTextWidth(dc.font.xfont, text, len);
+
−}
+
−
+
−void
+
−tile(Monitor *m) {
+
−	int x, y, h, w, mw;
+
−	unsigned int i, n;
+
−	Client *c;
+
−
+
−	for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
+
−	if(n == 0)
+
−		return;
+
−	/* master */
+
−	c = nexttiled(m->clients);
+
−	mw = m->mfact * m->ww;
+
−	resize(c, m->wx, m->wy, (n == 1 ? m->ww : mw) - 2 * c->bw, m->wh - 2 * c->bw, False);
+
−	if(--n == 0)
+
−		return;
+
−	/* tile stack */
+
−	x = (m->wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : m->wx + mw;
+
−	y = m->wy;
+
−	w = (m->wx + mw > c->x + c->w) ? m->wx + m->ww - x : m->ww - mw;
+
−	h = m->wh / n;
+
−	if(h < bh)
+
−		h = m->wh;
+
−	for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
+
−		resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
+
−		       ? m->wy + m->wh - y - 2 * c->bw : h - 2 * c->bw), False);
+
−		if(h != m->wh)
+
−			y = c->y + HEIGHT(c);
+
−	}
+
−}
+
−
+
−void
+
−togglebar(const Arg *arg) {
+
−	selmon->showbar = !selmon->showbar;
+
−	updatebarpos(selmon);
+
−	XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
+
−	arrange(selmon);
+
−}
+
−
+
−void
+
−togglefloating(const Arg *arg) {
+
−	if(!selmon->sel)
+
−		return;
+
−	selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
+
−	if(selmon->sel->isfloating)
+
−		resize(selmon->sel, selmon->sel->x, selmon->sel->y,
+
−		       selmon->sel->w, selmon->sel->h, False);
+
−	arrange(selmon);
+
−}
+
−
+
−void
+
−toggletag(const Arg *arg) {
+
−	unsigned int newtags;
+
−
+
−	if(!selmon->sel)
+
−		return;
+
−	newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
+
−	if(newtags) {
+
−		selmon->sel->tags = newtags;
+
−		arrange(selmon);
+
−	}
+
−}
+
−
+
−void
+
−toggleview(const Arg *arg) {
+
−	unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
+
−
+
−	if(newtagset) {
+
−		selmon->tagset[selmon->seltags] = newtagset;
+
−		arrange(selmon);
+
−	}
+
−}
+
−
+
−void
+
−unfocus(Client *c) {
+
−	if(!c)
+
−		return;
+
−	grabbuttons(c, False);
+
−	XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
+
−	XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
+
−}
+
−
+
−void
+
−unmanage(Client *c, Bool destroyed) {
+
−	Monitor *m = c->mon;
+
−	XWindowChanges wc;
+
−
+
−	/* The server grab construct avoids race conditions. */
+
−	detach(c);
+
−	detachstack(c);
+
−	if(!destroyed) {
+
−		wc.border_width = c->oldbw;
+
−		XGrabServer(dpy);
+
−		XSetErrorHandler(xerrordummy);
+
−		XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
+
−		XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
+
−		setclientstate(c, WithdrawnState);
+
−		XSync(dpy, False);
+
−		XSetErrorHandler(xerror);
+
−		XUngrabServer(dpy);
+
−	}
+
−	free(c);
+
−	focus(NULL);
+
−	arrange(m);
+
−}
+
−
+
−void
+
−unmapnotify(XEvent *e) {
+
−	Client *c;
+
−	XUnmapEvent *ev = &e->xunmap;
+
−
+
−	if((c = wintoclient(ev->window)))
+
−		unmanage(c, False);
+
−}
+
−
+
−void
+
−updatebars(void) {
+
−	Monitor *m;
+
−	XSetWindowAttributes wa;
+
−
+
−	wa.override_redirect = True;
+
−	wa.background_pixmap = ParentRelative;
+
−	wa.event_mask = ButtonPressMask|ExposureMask;
+
−	for(m = mons; m; m = m->next) {
+
−		m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
+
−		                          CopyFromParent, DefaultVisual(dpy, screen),
+
−		                          CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
+
−		XDefineCursor(dpy, m->barwin, cursor[CurNormal]);
+
−		XMapRaised(dpy, m->barwin);
+
−	}
+
−}
+
−
+
−void
+
−updatebarpos(Monitor *m) {
+
−	m->wy = m->my;
+
−	m->wh = m->mh;
+
−	if(m->showbar) {
+
−		m->wh -= bh;
+
−		m->by = m->topbar ? m->wy : m->wy + m->wh;
+
−		m->wy = m->topbar ? m->wy + bh : m->wy;
+
−	}
+
−	else
+
−		m->by = -bh;
+
−}
+
−
+
−Bool
+
−updategeom(void) {
+
−	Bool dirty = False;
+
−
+
−#ifdef XINERAMA
+
−	if(XineramaIsActive(dpy)) {
+
−		int i, j, n, nn;
+
−		Client *c;
+
−		Monitor *m;
+
−		XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
+
−		XineramaScreenInfo *unique = NULL;
+
−
+
−		info = XineramaQueryScreens(dpy, &nn);
+
−		for(n = 0, m = mons; m; m = m->next, n++);
+
−		/* only consider unique geometries as separate screens */
+
−		if(!(unique = (XineramaScreenInfo *)malloc(sizeof(XineramaScreenInfo) * nn)))
+
−			die("fatal: could not malloc() %u bytes\n", sizeof(XineramaScreenInfo) * nn);
+
−		for(i = 0, j = 0; i < nn; i++)
+
−			if(isuniquegeom(unique, j, &info[i]))
+
−				memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
+
−		XFree(info);
+
−		nn = j;
+
−		if(n <= nn) {
+
−			for(i = 0; i < (nn - n); i++) { /* new monitors available */
+
−				for(m = mons; m && m->next; m = m->next);
+
−				if(m)
+
−					m->next = createmon();
+
−				else
+
−					mons = createmon();
+
−			}
+
−			for(i = 0, m = mons; i < nn && m; m = m->next, i++)
+
−				if(i >= n
+
−				|| (unique[i].x_org != m->mx || unique[i].y_org != m->my
+
−				    || unique[i].width != m->mw || unique[i].height != m->mh))
+
−				{
+
−					dirty = True;
+
−					m->num = i;
+
−					m->mx = m->wx = unique[i].x_org;
+
−					m->my = m->wy = unique[i].y_org;
+
−					m->mw = m->ww = unique[i].width;
+
−					m->mh = m->wh = unique[i].height;
+
−					updatebarpos(m);
+
−				}
+
−		}
+
−		else { /* less monitors available nn < n */
+
−			for(i = nn; i < n; i++) {
+
−				for(m = mons; m && m->next; m = m->next);
+
−				while(m->clients) {
+
−					dirty = True;
+
−					c = m->clients;
+
−					m->clients = c->next;
+
−					detachstack(c);
+
−					c->mon = mons;
+
−					attach(c);
+
−					attachstack(c);
+
−				}
+
−				if(m == selmon)
+
−					selmon = mons;
+
−				cleanupmon(m);
+
−			}
+
−		}
+
−		free(unique);
+
−	}
+
−	else
+
−#endif /* XINERAMA */
+
−	/* default monitor setup */
+
−	{
+
−		if(!mons)
+
−			mons = createmon();
+
−		if(mons->mw != sw || mons->mh != sh) {
+
−			dirty = True;
+
−			mons->mw = mons->ww = sw;
+
−			mons->mh = mons->wh = sh;
+
−			updatebarpos(mons);
+
−		}
+
−	}
+
−	if(dirty) {
+
−		selmon = mons;
+
−		selmon = wintomon(root);
+
−	}
+
−	return dirty;
+
−}
+
−
+
−void
+
−updatenumlockmask(void) {
+
−	unsigned int i, j;
+
−	XModifierKeymap *modmap;
+
−
+
−	numlockmask = 0;
+
−	modmap = XGetModifierMapping(dpy);
+
−	for(i = 0; i < 8; i++)
+
−		for(j = 0; j < modmap->max_keypermod; j++)
+
−			if(modmap->modifiermap[i * modmap->max_keypermod + j]
+
−			   == XKeysymToKeycode(dpy, XK_Num_Lock))
+
−				numlockmask = (1 << i);
+
−	XFreeModifiermap(modmap);
+
−}
+
−
+
−void
+
−updatesizehints(Client *c) {
+
−	long msize;
+
−	XSizeHints size;
+
−
+
−	if(!XGetWMNormalHints(dpy, c->win, &size, &msize))
+
−		/* size is uninitialized, ensure that size.flags aren't used */
+
−		size.flags = PSize;
+
−	if(size.flags & PBaseSize) {
+
−		c->basew = size.base_width;
+
−		c->baseh = size.base_height;
+
−	}
+
−	else if(size.flags & PMinSize) {
+
−		c->basew = size.min_width;
+
−		c->baseh = size.min_height;
+
−	}
+
−	else
+
−		c->basew = c->baseh = 0;
+
−	if(size.flags & PResizeInc) {
+
−		c->incw = size.width_inc;
+
−		c->inch = size.height_inc;
+
−	}
+
−	else
+
−		c->incw = c->inch = 0;
+
−	if(size.flags & PMaxSize) {
+
−		c->maxw = size.max_width;
+
−		c->maxh = size.max_height;
+
−	}
+
−	else
+
−		c->maxw = c->maxh = 0;
+
−	if(size.flags & PMinSize) {
+
−		c->minw = size.min_width;
+
−		c->minh = size.min_height;
+
−	}
+
−	else if(size.flags & PBaseSize) {
+
−		c->minw = size.base_width;
+
−		c->minh = size.base_height;
+
−	}
+
−	else
+
−		c->minw = c->minh = 0;
+
−	if(size.flags & PAspect) {
+
−		c->mina = (float)size.min_aspect.y / size.min_aspect.x;
+
−		c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
+
−	}
+
−	else
+
−		c->maxa = c->mina = 0.0;
+
−	c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
+
−	             && c->maxw == c->minw && c->maxh == c->minh);
+
−}
+
−
+
−void
+
−updatetitle(Client *c) {
+
−	if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
+
−		gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
+
−	if(c->name[0] == '\0') /* hack to mark broken clients */
+
−		strcpy(c->name, broken);
+
−}
+
−
+
−void
+
−updatestatus(void) {
+
−	if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
+
−		strcpy(stext, "dwm-"VERSION);
+
−	drawbar(selmon);
+
−}
+
−
+
−void
+
−updatewmhints(Client *c) {
+
−	XWMHints *wmh;
+
−
+
−	if((wmh = XGetWMHints(dpy, c->win))) {
+
−		if(c == selmon->sel && wmh->flags & XUrgencyHint) {
+
−			wmh->flags &= ~XUrgencyHint;
+
−			XSetWMHints(dpy, c->win, wmh);
+
−		}
+
−		else
+
−			c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
+
−		XFree(wmh);
+
−	}
+
−}
+
−
+
−void
+
−view(const Arg *arg) {
+
−	if((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
+
−		return;
+
−	selmon->seltags ^= 1; /* toggle sel tagset */
+
−	if(arg->ui & TAGMASK)
+
−		selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
+
−	arrange(selmon);
+
−}
+
−
+
−Client *
+
−wintoclient(Window w) {
+
−	Client *c;
+
−	Monitor *m;
+
−
+
−	for(m = mons; m; m = m->next)
+
−		for(c = m->clients; c; c = c->next)
+
−			if(c->win == w)
+
−				return c;
+
−	return NULL;
+
−}
+
−
+
−Monitor *
+
−wintomon(Window w) {
+
−	int x, y;
+
−	Client *c;
+
−	Monitor *m;
+
−
+
−	if(w == root && getrootptr(&x, &y))
+
−		return ptrtomon(x, y);
+
−	for(m = mons; m; m = m->next)
+
−		if(w == m->barwin)
+
−			return m;
+
−	if((c = wintoclient(w)))
+
−		return c->mon;
+
−	return selmon;
+
−}
+
−
+
−/* There's no way to check accesses to destroyed windows, thus those cases are
+
− * ignored (especially on UnmapNotify's).  Other types of errors call Xlibs
+
− * default error handler, which may call exit.  */
+
−int
+
−xerror(Display *dpy, XErrorEvent *ee) {
+
−	if(ee->error_code == BadWindow
+
−	|| (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
+
−	|| (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
+
−	|| (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
+
−	|| (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
+
−	|| (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
+
−	|| (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
+
−	|| (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
+
−	|| (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
+
−		return 0;
+
−	fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
+
−			ee->request_code, ee->error_code);
+
−	return xerrorxlib(dpy, ee); /* may call exit */
+
−}
+
−
+
−int
+
−xerrordummy(Display *dpy, XErrorEvent *ee) {
+
−	return 0;
+
−}
+
−
+
−/* Startup Error handler to check if another window manager
+
− * is already running. */
+
−int
+
−xerrorstart(Display *dpy, XErrorEvent *ee) {
+
−	otherwm = True;
+
−	return -1;
+
−}
+
−
+
−void
+
−zoom(const Arg *arg) {
+
−	Client *c = selmon->sel;
+
−
+
−	if(!selmon->lt[selmon->sellt]->arrange
+
−	|| selmon->lt[selmon->sellt]->arrange == monocle
+
−	|| (selmon->sel && selmon->sel->isfloating))
+
−		return;
+
−	if(c == nexttiled(selmon->clients))
+
−		if(!c || !(c = nexttiled(c->next)))
+
−			return;
+
−	detach(c);
+
−	attach(c);
+
−	focus(c);
+
−	arrange(c->mon);
+
−}
+
−
+
−int
+
−main(int argc, char *argv[]) {
+
−	if(argc == 2 && !strcmp("-v", argv[1]))
+
−		die("dwm-"VERSION", © 2006-2009 dwm engineers, see LICENSE for details\n");
+
−	else if(argc != 1)
+
−		die("usage: dwm [-v]\n");
+
−	if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
+
−		fputs("warning: no locale support\n", stderr);
+
−	if(!(dpy = XOpenDisplay(NULL)))
+
−		die("dwm: cannot open display\n");
+
−	checkotherwm();
+
−	setup();
+
−	scan();
+
−	run();
+
−	cleanup();
+
−	XCloseDisplay(dpy);
+
−	return 0;
+
−}