/* 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. * * Calls to fetch an X event from the event queue are blocking. Due reading * status text from standard input, a select()-driven main loop has been * implemented which selects for reads on the X connection and STDIN_FILENO to * handle all data smoothly. 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 global * doubly-linked client list, the focus history is remembered through a global * stack list. 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 #ifdef XINERAMA #include #endif /* macros */ #define MAX(a, b) ((a) > (b) ? (a) : (b)) #define MIN(a, b) ((a) < (b) ? (a) : (b)) #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask) #define CLEANMASK(mask) (mask & ~(numlockmask|LockMask)) #define LENGTH(x) (sizeof x / sizeof x[0]) #define MAXTAGLEN 16 #define MOUSEMASK (BUTTONMASK|PointerMotionMask) #define TAGMASK ((int)((1LL << 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, WMName, WMState, WMLast };/* default atoms */ /* typedefs */ typedef unsigned int uint; typedef unsigned long ulong; typedef struct Client Client; struct Client { char name[256]; int x, y, w, h; int basew, baseh, incw, inch, maxw, maxh, minw, minh; float mina, maxa; int bw, oldbw; Bool isbanned, isfixed, isfloating, ismoved, isurgent; uint tags; Client *next; Client *snext; Window win; }; typedef struct { int x, y, w, h; ulong norm[ColLast]; ulong sel[ColLast]; Drawable drawable; GC gc; struct { int ascent; int descent; int height; XFontSet set; XFontStruct *xfont; } font; } DC; /* draw context */ typedef union { const char *c; int i; uint ui; float f; void *aux; } Arg; typedef struct { uint mod; KeySym keysym; void (*func)(const Arg *); const Arg arg; } Key; typedef struct { const char *symbol; void (*arrange)(void); } Layout; typedef struct { const char *class; const char *instance; const char *title; uint tags; Bool isfloating; } Rule; /* function declarations */ static void applyrules(Client *c); static void arrange(void); 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 configure(Client *c); static void configurenotify(XEvent *e); static void configurerequest(XEvent *e); static void destroynotify(XEvent *e); static void detach(Client *c); static void detachstack(Client *c); static void drawbar(void); static void drawsquare(Bool filled, Bool empty, Bool invert, ulong col[ColLast]); static void drawtext(const char *text, ulong col[ColLast], Bool invert); static void enternotify(XEvent *e); static void eprint(const char *errstr, ...); static void expose(XEvent *e); static void focus(Client *c); static void focusin(XEvent *e); static void focusstack(const Arg *arg); static Client *getclient(Window w); static ulong getcolor(const char *colstr); static long getstate(Window w); static Bool gettextprop(Window w, Atom atom, char *text, uint size); static void grabbuttons(Client *c, Bool focused); static void grabkeys(void); static void initfont(const char *fontstr); static Bool isoccupied(uint t); static Bool isprotodel(Client *c); static Bool isurgent(uint t); 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 movemouse(Client *c); static Client *nexttiled(Client *c); 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 sizehints); static void resizemouse(Client *c); static void restack(void); static void run(void); static void scan(void); static void setclientstate(Client *c, long state); static void setmfact(const Arg *arg); static void setup(void); static void spawn(const Arg *arg); static void tag(const Arg *arg); static int textnw(const char *text, uint len); static void tile(void); static void togglebar(const Arg *arg); static void togglefloating(const Arg *arg); static void togglelayout(const Arg *arg); static void togglemax(const Arg *arg); static void toggletag(const Arg *arg); static void toggleview(const Arg *arg); static void unmanage(Client *c); static void unmapnotify(XEvent *e); static void updatebar(void); static void updategeom(void); static void updatesizehints(Client *c); static void updatetitle(Client *c); static void updatewmhints(Client *c); static void view(const Arg *arg); 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 char stext[256]; static int screen, sx, sy, sw, sh; static int by, bh, blw, wx, wy, ww, wh; static uint seltags = 0; static int (*xerrorxlib)(Display *, XErrorEvent *); static uint 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 ismax = False; static Bool otherwm, readin; static Bool running = True; static uint tagset[] = {1, 1}; /* after start, first tag is selected */ static Client *clients = NULL; static Client *sel = NULL; static Client *stack = NULL; static Cursor cursor[CurLast]; static Display *dpy; static DC dc = {0}; static Window root, barwin; /* configuration, allows nested code to access above variables */ #include "config.h" static Layout *lt = layouts; /* compile-time check if all tags fit into an uint bit array. */ struct NumTags { char limitexceeded[sizeof(uint) * 8 < LENGTH(tags) ? -1 : 1]; }; /* function implementations */ void applyrules(Client *c) { uint i; Rule *r; XClassHint ch = { 0 }; /* rule matching */ XGetClassHint(dpy, c->win, &ch); for(i = 0; i < LENGTH(rules); i++) { r = &rules[i]; if((!r->title || strstr(c->name, r->title)) && (!r->class || (ch.res_class && strstr(ch.res_class, r->class))) && (!r->instance || (ch.res_name && strstr(ch.res_name, r->instance)))) { c->isfloating = r->isfloating; c->tags |= r->tags & TAGMASK; } } if(ch.res_class) XFree(ch.res_class); if(ch.res_name) XFree(ch.res_name); if(!c->tags) c->tags = tagset[seltags]; } void arrange(void) { Client *c; for(c = clients; c; c = c->next) if(c->tags & tagset[seltags]) { /* is visible */ if(ismax && !c->isfixed) { XMoveResizeWindow(dpy, c->win, wx, wy, ww - 2 * c->bw, wh - 2 * c->bw); c->ismoved = True; } else if(!lt->arrange || c->isfloating) resize(c, c->x, c->y, c->w, c->h, True); c->isbanned = False; } else if(!c->isbanned) { XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y); c->isbanned = c->ismoved = True; } focus(NULL); if(lt->arrange && !ismax) lt->arrange(); restack(); } void attach(Client *c) { c->next = clients; clients = c; } void attachstack(Client *c) { c->snext = stack; stack = c; } void buttonpress(XEvent *e) { uint i, mask; int x; Client *c; XButtonPressedEvent *ev = &e->xbutton; if(ev->window == barwin) { x = 0; for(i = 0; i < LENGTH(tags); i++) { x += TEXTW(tags[i]); if(ev->x < x) { mask = 1 << i; if(ev->button == Button1) { if(ev->state & MODKEY) tag((Arg*)&mask); else view((Arg*)&mask); } else if(ev->button == Button3) { if(ev->state & MODKEY) toggletag((Arg*)&mask); else toggleview((Arg*)&mask); } return; } } if(ev->x < x + blw) { if(ev->button == Button1) togglelayout(NULL); else if(ev->button == Button3) togglemax(NULL); } } else if((c = getclient(ev->window))) { focus(c); if(CLEANMASK(ev->state) != MODKEY || (ismax && !c->isfixed)) return; if(ev->button == Button1) movemouse(c); else if(ev->button == Button2) togglefloating(NULL); else if(ev->button == Button3 && !c->isfixed) resizemouse(c); } } void checkotherwm(void) { otherwm = False; XSetErrorHandler(xerrorstart); /* this causes an error if some other window manager is running */ XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask); XSync(dpy, False); if(otherwm) eprint("dwm: another window manager is already running\n"); XSetErrorHandler(NULL); xerrorxlib = XSetErrorHandler(xerror); XSync(dpy, False); } void cleanup(void) { Arg a = {.i = ~0}; close(STDIN_FILENO); view(&a); while(stack) unmanage(stack); 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]); XDestroyWindow(dpy, barwin); XSync(dpy, False); XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime); } 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) { XConfigureEvent *ev = &e->xconfigure; if(ev->window == root && (ev->width != sw || ev->height != sh)) { sw = ev->width; sh = ev->height; updategeom(); updatebar(); arrange(); } } void configurerequest(XEvent *e) { Client *c; XConfigureRequestEvent *ev = &e->xconfigurerequest; XWindowChanges wc; if((c = getclient(ev->window))) { if(ev->value_mask & CWBorderWidth) c->bw = ev->border_width; if(ismax && !c->isbanned && !c->isfixed) XMoveResizeWindow(dpy, c->win, wx, wy, ww - 2 * c->bw, wh + 2 * c->bw); else if(c->isfloating || !lt->arrange) { if(ev->value_mask & CWX) c->x = sx + ev->x; if(ev->value_mask & CWY) c->y = sy + ev->y; if(ev->value_mask & CWWidth) c->w = ev->width; if(ev->value_mask & CWHeight) c->h = ev->height; if((c->x - sx + c->w) > sw && c->isfloating) c->x = sx + (sw / 2 - c->w / 2); /* center in x direction */ if((c->y - sy + c->h) > sh && c->isfloating) c->y = sy + (sh / 2 - c->h / 2); /* center in y direction */ if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight))) configure(c); if(!c->isbanned) 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); } void destroynotify(XEvent *e) { Client *c; XDestroyWindowEvent *ev = &e->xdestroywindow; if((c = getclient(ev->window))) unmanage(c); } void detach(Client *c) { Client *i; if (c != clients) { for(i = clients; i->next != c; i = i->next); i->next = c->next; } else { clients = c->next; } c->next = NULL; } void detachstack(Client *c) { Client **tc; for(tc = &stack; *tc && *tc != c; tc = &(*tc)->snext); *tc = c->snext; } void drawbar(void) { int i, x; Client *c; dc.x = 0; for(c = stack; c && c->isbanned; c = c->snext); for(i = 0; i < LENGTH(tags); i++) { dc.w = TEXTW(tags[i]); if(tagset[seltags] & 1 << i) { drawtext(tags[i], dc.sel, isurgent(i)); drawsquare(c && c->tags & 1 << i, isoccupied(i), isurgent(i), dc.sel); } else { drawtext(tags[i], dc.norm, isurgent(i)); drawsquare(c && c->tags & 1 << i, isoccupied(i), isurgent(i), dc.norm); } dc.x += dc.w; } if(blw > 0) { dc.w = blw; drawtext(lt->symbol, dc.norm, ismax); x = dc.x + dc.w; } else x = dc.x; dc.w = TEXTW(stext); dc.x = ww - dc.w; if(dc.x < x) { dc.x = x; dc.w = ww - x; } drawtext(stext, dc.norm, False); if((dc.w = dc.x - x) > bh) { dc.x = x; if(c) { drawtext(c->name, dc.sel, False); drawsquare(c->isfixed, c->isfloating, False, dc.sel); } else drawtext(NULL, dc.norm, False); } XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, ww, bh, 0, 0); XSync(dpy, False); } void drawsquare(Bool filled, Bool empty, Bool invert, ulong 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, ulong col[ColLast], Bool invert) { int i, x, y, h, len, olen; XRectangle r = { dc.x, dc.y, dc.w, dc.h }; char buf[256]; XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]); XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1); if(!text) return; olen = strlen(text); len = MIN(olen, sizeof buf); memcpy(buf, text, len); 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 && (i = textnw(buf, len)) > dc.w - h; len--); if(!len) return; 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; XCrossingEvent *ev = &e->xcrossing; if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root) return; if((c = getclient(ev->window))) focus(c); else focus(NULL); } void eprint(const char *errstr, ...) { va_list ap; va_start(ap, errstr); vfprintf(stderr, errstr, ap); va_end(ap); exit(EXIT_FAILURE); } void expose(XEvent *e) { XExposeEvent *ev = &e->xexpose; if(ev->count == 0 && (ev->window == barwin)) drawbar(); } void focus(Client *c) { if(!c || c->isbanned) for(c = stack; c && c->isbanned; c = c->snext); if(sel && sel != c) { grabbuttons(sel, False); XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]); } if(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); sel = c; drawbar(); } void focusin(XEvent *e) { /* there are some broken focus acquiring clients */ XFocusChangeEvent *ev = &e->xfocus; if(sel && ev->window != sel->win) XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime); } void focusstack(const Arg *arg) { Client *c = NULL, *i; if(!sel) return; if (arg->i > 0) { for(c = sel->next; c && c->isbanned; c = c->next); if(!c) for(c = clients; c && c->isbanned; c = c->next); } else { for(i = clients; i != sel; i = i->next) if (!i->isbanned) c = i; if(!c) for(; i; i = i->next) if (!i->isbanned) c = i; } if(c) { focus(c); restack(); } } Client * getclient(Window w) { Client *c; for(c = clients; c && c->win != w; c = c->next); return c; } ulong getcolor(const char *colstr) { Colormap cmap = DefaultColormap(dpy, screen); XColor color; if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color)) eprint("error, cannot allocate color '%s'\n", colstr); return color.pixel; } long getstate(Window w) { int format, status; long result = -1; unsigned char *p = NULL; ulong 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, uint 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) { int i, j; uint buttons[] = { Button1, Button2, Button3 }; uint modifiers[] = { MODKEY, MODKEY|LockMask, MODKEY|numlockmask, MODKEY|numlockmask|LockMask }; XUngrabButton(dpy, AnyButton, AnyModifier, c->win); if(focused) for(i = 0; i < LENGTH(buttons); i++) for(j = 0; j < LENGTH(modifiers); j++) XGrabButton(dpy, buttons[i], 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) { uint i, j; KeyCode code; XModifierKeymap *modmap; /* init modifier map */ 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); XUngrabKey(dpy, AnyKey, AnyModifier, root); for(i = 0; i < LENGTH(keys); i++) { code = XKeysymToKeycode(dpy, keys[i].keysym); XGrabKey(dpy, code, keys[i].mod,
/*
 * (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
resizetitle(Client *c)
{
	int i;

	c->tw = 0;
	for(i = 0; i < ntags; i++)
		if(c->tags[i])
			c->tw += textw(tags[i]);
	c->tw += textw(c->name);
	if(c->tw > c->w)
		c->tw = c->w + 2;
	c->tx = c->x + c->w - c->tw + 2;
	c->ty = c->y;
	if(c->tags[tsel])
		XMoveResizeWindow(dpy, c->title, c->tx, c->ty, c->tw, c->th);
	else
		XMoveResizeWindow(dpy, c->title, c->tx + 2 * sw, c->ty, c->tw, c->th);

}

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->title, c->tx + 2 * sw, c->ty);
}

void
focus(Client *c)
{
	Client *old = sel;
	XEvent ev;

	sel = c;
	if(old && old != c)
		drawtitle(old);
	drawtitle(c);
	XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
	XSync(dpy, False);
	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
}

void
focusnext(Arg *arg)
{
	Client *c;
   
	if(!sel)
		return;

	if(sel->ismax)
		togglemax(NULL);

	if(!(c = getnext(sel->next)))
		c = getnext(clients);
	if(c) {
		higher(c);
		focus(c);
	}
}

void
focusprev(Arg *arg)
{
	Client *c;

	if(!sel)
		return;

	if(sel->ismax)
		togglemax(NULL);

	if(!(c = getprev(sel->prev))) {
		for(c = clients; c && c->next; c = c->next);
		c = getprev(c);
	}
	if(c) {
		higher(c);
		focus(c);
	}
}

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

	for(c = clients;