/* 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef XINERAMA #include #endif /* XINERAMA */ #include "draw.h" /* macros */ #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask) #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask)) #define INTERSECT(x,y,w,h,m) (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \ * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy))) #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, NetWMState, NetWMFullscreen, NetActiveWindow, NetWMWindowType, NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */ enum { WMProtocols, WMDelete, WMState, WMTakeFocus, 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 oldx, oldy, oldw, oldh; int basew, baseh, incw, inch, maxw, maxh, minw, minh; int bw, oldbw; unsigned int tags; Bool isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen; 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 nmaster; 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 clientmessage(XEvent *e); 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 incnmaster(const Arg *arg); static void initfont(const char *fontstr); 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 motionnotify(XEvent *e); static void movemouse(const Arg *arg); static Client *nexttiled(Client *c); static void pop(Client *); static void propertynotify(XEvent *e); static void quit(const Arg *arg); static Monitor *recttomon(int x, int y, int w, int h); static void resize(Client *c, int x, int y, int w, int h, Bool interact); static void resizeclient(Client *c, int x, int y, int w, int h); static void resizemouse(const Arg *arg); static void restack(Monitor *m); static void run(void); static void scan(void); static Bool sendevent(Client *c, Atom proto); static void sendmon(Client *c, Monitor *m); static void setclientstate(Client *c, long state); static void setfocus(Client *c); static void setfullscreen(Client *c, Bool fullscreen); 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, Bool setfocus); 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 updateclientlist(void); static void updatenumlockmask(void); static void updatesizehints(Client *c); static void updatestatus(void); static void updatewindowtype(Client *c); 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, [ClientMessage] = clientmessage, [ConfigureRequest] = configurerequest, [ConfigureNotify] = configurenotify, [DestroyNotify] = destroynotify, [EnterNotify] = enternotify, [Expose] = expose, [FocusIn] = focusin, [KeyPress] = keypress, [MappingNotify] = mappingnotify, [MapRequest] = maprequest, [MotionNotify] = motionnotify, [PropertyNotify] = propertynotify, [UnmapNotify] = unmapnotify }; static Atom wmatom[WMLast], netatom[NetLast]; static Bool running = True, usexkb; 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 = { NULL, NULL }; /* rule matching */ c->isfloating = c->tags = 0; 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->wx + m->ww) *x = m->wx + m->ww - WIDTH(c); if(*y >= m->wy + m->wh) *y = m->wy + m->wh - HEIGHT(c); if(*x + *w + 2 * c->bw <= m->wx) *x = m->wx; if(*y + *h + 2 * c->bw <= m->wy) *y = m->wy; } if(*h < bh) *h = bh; if(*w < bh) *w = bh; if(resizehints || c->isfloating || !c->mon->lt[c->mon->sellt]->arrange) { /* 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 = MAX(*w + c->basew, c->minw); *h = MAX(*h + c->baseh, 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); if(m) { arrangemon(m); restack(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); } 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, True); 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->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) { xerrorxlib = XSetErrorHandler(xerrorstart); /* this causes an error if some other window manager is running */ XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask); XSync(dpy, False); 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); XDeleteProperty(dpy, root, netatom[NetActiveWindow]); } 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 clientmessage(XEvent *e) { XClientMessageEvent *cme = &e->xclient; Client *c = wintoclient(cme->window); if(!c) return; if(cme->message_type == netatom[NetWMState]) { if(cme->data.l[1] == netatom[NetWMFullscreen] || cme->data.l[2] == netatom[NetWMFullscreen]) setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD */ || (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */ && !c->isfullscreen))); } else if(cme->message_type == netatom[NetActiveWindow]) { if(!ISVISIBLE(c)) { c->mon->seltags ^= 1; c->mon->tagset[c->mon->seltags] = c->tags; } pop(c); } } 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; Bool dirty; // TODO: u
/* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
 * See LICENSE file for license details.
 */
#include "dwm.h"
#include <stdlib.h>
#include <string.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>

/* static functions */

static void
detachstack(Client *c) {
	Client **tc;
	for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
	*tc = c->snext;
}

static void
grabbuttons(Client *c, Bool focused) {
	XUngrabButton(dpy, AnyButton, AnyModifier, c->win);

	if(focused) {
		XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);

		XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);

		XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
		XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
	}
	else
		XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
				GrabModeAsync, GrabModeSync, None, None);
}

static int
xerrordummy(Display *dsply, XErrorEvent *ee) {
	return 0;
}

/* extern functions */

void
ban(Client *c) {
	XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
	XMoveWindow(dpy, c->twin, c->tx + 2 * sw, c->ty);
}

void
configure(Client *c) {
	XEvent synev;

	synev.type = ConfigureNotify;
	synev.xconfigure.display = dpy;
	synev.xconfigure.event = c->win;
	synev.xconfigure.window = c->win;
	synev.xconfigure.x = c->x;
	synev.xconfigure.y = c->y;
	synev.xconfigure.width = c->w;
	synev.xconfigure.height = c->h;
	synev.xconfigure.border_width = c->border;
	synev.xconfigure.above = None;
	XSendEvent(dpy, c->win, True, NoEventMask, &synev);
}

void
focus(Client *c) {
	Client *old;

	if(!issel || (c && !isvisible(c)))
		return;
	if(!sel)
		sel = c;
	else if(sel != c) {
		old = sel;
		sel = c;
		if(old) {
			grabbuttons(old, False);
			drawtitle(old);
		}
	}
	if(c) {
		detachstack(c);
		c->snext = stack;
		stack = c;
		grabbuttons(c, True);
		drawtitle(c);
		XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
	}
	else
		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
}

Client *
getclient(Window w) {
	Client *c;

	for(c = clients; c; c = c->next)
		if(c->win == w)
			return c;
	return NULL;
}

Client *
getctitle(Window w) {
	Client *c;

	for(c = clients; c; c = c->next)
		if(c->twin == w)
			return c;
	return NULL;
}

void
gravitate(Client *c, Bool invert) {
	int dx = 0, dy = 0;

	switch(c->grav) {
	default:
		break;
	case StaticGravity:
	case NorthWestGravity:
	case NorthGravity:
	case NorthEastGravity:
		dy = c->border;
		break;
	case EastGravity:
	case CenterGravity:
	case WestGravity:
		dy = -(c->h / 2) + c->border;
		break;
	case SouthEastGravity:
	case SouthGravity:
	case SouthWestGravity:
		dy = -(c->h);
		break;
	}
	switch (c->grav