* 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.
+ * 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
+ * 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.
*
#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/select.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <X11/cursorfont.h>
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAXTAGLEN 16
#define MOUSEMASK (BUTTONMASK|PointerMotionMask)
+#define WIDTH(x) ((x)->w + 2 * (x)->bw)
+#define HEIGHT(x) ((x)->h + 2 * (x)->bw)
#define TAGMASK ((int)((1LL << LENGTH(tags)) - 1))
#define TEXTW(x) (textnw(x, strlen(x)) + dc.font.height)
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 */
+enum { WMProtocols, WMDelete, WMState, WMLast }; /* default atoms */
enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
} Rule;
/* function declarations */
+static void adjustborder(Client *c, unsigned int bw);
static void applyrules(Client *c);
static void arrange(void);
static void attach(Client *c);
static void buttonpress(XEvent *e);
static void checkotherwm(void);
static void cleanup(void);
-static void clearurgent(void);
+static void clearurgent(Client *c);
static void configure(Client *c);
static void configurenotify(XEvent *e);
static void configurerequest(XEvent *e);
static void setlayout(const Arg *arg);
static void setmfact(const Arg *arg);
static void setup(void);
+static void showhide(Client *c, unsigned int ntiled);
+static void sigchld(int signal);
static void spawn(const Arg *arg);
static void tag(const Arg *arg);
static int textnw(const char *text, unsigned int len);
static void updategeom(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 Atom wmatom[WMLast], netatom[NetLast];
static Bool otherwm;
static Bool running = True;
-static unsigned int 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 DC dc;
static Layout *lt[] = { NULL, NULL };
static Window root, barwin;
/* configuration, allows nested code to access above variables */
/* function implementations */
void
+adjustborder(Client *c, unsigned int bw) {
+ XWindowChanges wc;
+
+ if(c->bw != bw) {
+ c->bw = wc.border_width = bw;
+ XConfigureWindow(dpy, c->win, CWBorderWidth, &wc);
+ }
+}
+
+void
applyrules(Client *c) {
unsigned int 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(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 ? r->tags & TAGMASK : tagset[seltags];
+ }
}
+ if(ch.res_class)
+ XFree(ch.res_class);
+ if(ch.res_name)
+ XFree(ch.res_name);
}
- 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) {
+ unsigned int nt;
Client *c;
- for(c = clients; c; c = c->next)
- if(ISVISIBLE(c)) {
- XMoveWindow(dpy, c->win, c->x, c->y);
- if(!lt[sellt]->arrange || c->isfloating)
- resize(c, c->x, c->y, c->w, c->h, True);
- }
- else {
- XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
- }
-
+ for(nt = 0, c = nexttiled(clients); c; c = nexttiled(c->next), nt++);
+ showhide(stack, nt);
focus(NULL);
if(lt[sellt]->arrange)
lt[sellt]->arrange();
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 ? &arg : &buttons[i].arg);
+ buttons[i].func(click == ClkTagBar && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
}
void
checkotherwm(void) {
otherwm = False;
- XSetErrorHandler(xerrorstart);
+ 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(NULL);
- xerrorxlib = XSetErrorHandler(xerror);
+ XSetErrorHandler(xerror);
XSync(dpy, False);
}
Arg a = {.ui = ~0};
Layout foo = { "", NULL };
- close(STDIN_FILENO);
view(&a);
lt[sellt] = &foo;
while(stack)
}
void
-clearurgent(void) {
+clearurgent(Client *c) {
XWMHints *wmh;
- Client *c;
-
- for(c = clients; c; c = c->next)
- if(ISVISIBLE(c) && c->isurgent) {
- c->isurgent = False;
- if (!(wmh = XGetWMHints(dpy, c->win)))
- continue;
- wmh->flags &= ~XUrgencyHint;
- XSetWMHints(dpy, c->win, wmh);
- XFree(wmh);
- }
+ c->isurgent = False;
+ if(!(wmh = XGetWMHints(dpy, c->win)))
+ return;
+ wmh->flags &= ~XUrgencyHint;
+ XSetWMHints(dpy, c->win, wmh);
+ XFree(wmh);
}
void
XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
}
if(c) {
+ if(c->isurgent)
+ clearurgent(c);
detachstack(c);
attachstack(c);
grabbuttons(c, True);
XUngrabKey(dpy, AnyKey, AnyModifier, root);
for(i = 0; i < LENGTH(keys); i++) {
- 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);
+ 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);
}
}
}
}
}
else {
- if(dc.font.xfont)
- XFreeFont(dpy, dc.font.xfont);
- dc.font.xfont = NULL;
if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
&& !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
die("error, cannot load font: '%s'\n", fontstr);
void
manage(Window w, XWindowAttributes *wa) {
+ static Client cz;
Client *c, *t = NULL;
Window trans = None;
XWindowChanges wc;
- if(!(c = calloc(1, sizeof(Client))))
- die("fatal: could not calloc() %u bytes\n", sizeof(Client));
+ if(!(c = malloc(sizeof(Client))))
+ die("fatal: could not malloc() %u bytes\n", sizeof(Client));
+ *c = cz;
c->win = w;
/* geometry */
c->bw = 0;
}
else {
- if(c->x + c->w + 2 * c->bw > sx + sw)
- c->x = sx + sw - c->w - 2 * c->bw;
- if(c->y + c->h + 2 * c->bw > sy + sh)
- c->y = sy + sh - c->h - 2 * c->bw;
+ if(c->x + WIDTH(c) > sx + sw)
+ c->x = sx + sw - WIDTH(c);
+ if(c->y + HEIGHT(c) > sy + sh)
+ c->y = sy + sh - HEIGHT(c);
c->x = MAX(c->x, sx);
/* only fix client y-offset, if the client center might cover the bar */
c->y = MAX(c->y, ((by == 0) && (c->x + (c->w / 2) >= wx) && (c->x + (c->w / 2) < wx + ww)) ? bh : sy);
void
monocle(void) {
+ unsigned int n;
Client *c;
- for(c = nexttiled(clients); c; c = nexttiled(c->next))
+ for(n = 0, c = nexttiled(clients); c && n < 2; c = nexttiled(c->next), n++);
+ for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
+ adjustborder(c, n == 1 ? 0 : borderpx);
resize(c, wx, wy, ww - 2 * c->bw, wh - 2 * c->bw, resizehints);
+ }
}
void
None, cursor[CurMove], CurrentTime) != GrabSuccess)
return;
XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui);
+ if(usegrab)
+ XGrabServer(dpy);
do {
XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
switch (ev.type) {
handler[ev.type](&ev);
break;
case MotionNotify:
- XSync(dpy, False);
nx = ocx + (ev.xmotion.x - x);
ny = ocy + (ev.xmotion.y - y);
if(snap && nx >= wx && nx <= wx + ww
&& ny >= wy && ny <= wy + wh) {
if(abs(wx - nx) < snap)
nx = wx;
- else if(abs((wx + ww) - (nx + c->w + 2 * c->bw)) < snap)
- nx = wx + ww - c->w - 2 * c->bw;
+ else if(abs((wx + ww) - (nx + WIDTH(c))) < snap)
+ nx = wx + ww - WIDTH(c);
if(abs(wy - ny) < snap)
ny = wy;
- else if(abs((wy + wh) - (ny + c->h + 2 * c->bw)) < snap)
- ny = wy + wh - c->h - 2 * c->bw;
+ else if(abs((wy + wh) - (ny + HEIGHT(c))) < snap)
+ ny = wy + wh - HEIGHT(c);
if(!c->isfloating && lt[sellt]->arrange && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
togglefloating(NULL);
}
}
}
while(ev.type != ButtonRelease);
+ if(usegrab)
+ XUngrabServer(dpy);
XUngrabPointer(dpy, CurrentTime);
}
Window trans;
XPropertyEvent *ev = &e->xproperty;
- if(ev->state == PropertyDelete)
+ if((ev->window == root) && (ev->atom = XA_WM_NAME))
+ updatestatus();
+ else if(ev->state == PropertyDelete)
return; /* ignore */
- if((c = getclient(ev->window))) {
+ else if((c = getclient(ev->window))) {
switch (ev->atom) {
default: break;
case XA_WM_TRANSIENT_FOR:
void
quit(const Arg *arg) {
- readin = running = False;
+ running = False;
}
void
/* adjust for aspect limits */
if(c->mina > 0 && c->maxa > 0) {
- if(c->maxa < (float)(w / h))
+ if(c->maxa < (float)w / h)
w = h * c->maxa;
- else if(c->mina < (float)(h / w))
+ else if(c->mina < (float)h / w)
h = w * c->mina;
}
if(w <= 0 || h <= 0)
return;
if(x > sx + sw)
- x = sw - w - 2 * c->bw;
+ x = sw - WIDTH(c);
if(y > sy + sh)
- y = sh - h - 2 * c->bw;
+ y = sh - HEIGHT(c);
if(x + w + 2 * c->bw < sx)
x = sx;
if(y + h + 2 * c->bw < sy)
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);
+ if(usegrab)
+ XGrabServer(dpy);
do {
XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
switch(ev.type) {
handler[ev.type](&ev);
break;
case MotionNotify:
- XSync(dpy, False);
nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
}
}
while(ev.type != ButtonRelease);
+ if(usegrab)
+ XUngrabServer(dpy);
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));
void
run(void) {
- char *p;
- char sbuf[sizeof stext];
- fd_set rd;
- int r, xfd;
- unsigned int len, offset;
XEvent ev;
- /* main event loop, also reads status text from stdin */
+ /* main event loop */
XSync(dpy, False);
- xfd = ConnectionNumber(dpy);
- offset = 0;
- len = sizeof stext - 1;
- sbuf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
- while(running) {
- FD_ZERO(&rd);
- if(readin)
- FD_SET(STDIN_FILENO, &rd);
- FD_SET(xfd, &rd);
- if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
- if(errno == EINTR)
- continue;
- die("select failed\n");
- }
- if(FD_ISSET(STDIN_FILENO, &rd)) {
- switch((r = read(STDIN_FILENO, sbuf + offset, len - offset))) {
- case -1:
- strncpy(stext, strerror(errno), len);
- readin = False;
- break;
- case 0:
- strncpy(stext, "EOF", 4);
- readin = False;
- break;
- default:
- for(p = sbuf + offset; r > 0; p++, r--, offset++)
- if(*p == '\n' || *p == '\0') {
- *p = '\0';
- strncpy(stext, sbuf, len);
- p += r - 1; /* p is sbuf + offset + r - 1 */
- for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
- offset = r;
- if(r)
- memmove(sbuf, p - r + 1, r);
- break;
- }
- break;
- }
- drawbar();
- }
- while(XPending(dpy)) {
- XNextEvent(dpy, &ev);
- if(handler[ev.type])
- (handler[ev.type])(&ev); /* call handler */
- }
+ while(running && !XNextEvent(dpy, &ev)) {
+ if(handler[ev.type])
+ (handler[ev.type])(&ev); /* call handler */
}
}
/* init atoms */
wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
- wmatom[WMName] = XInternAtom(dpy, "WM_NAME", False);
wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
XDefineCursor(dpy, barwin, cursor[CurNormal]);
XMapRaised(dpy, barwin);
- strcpy(stext, "dwm-"VERSION);
- drawbar();
+ updatestatus();
/* EWMH support per view */
XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
/* select for events */
wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask
- |EnterWindowMask|LeaveWindowMask|StructureNotifyMask;
+ |EnterWindowMask|LeaveWindowMask|StructureNotifyMask
+ |PropertyChangeMask;
XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
XSelectInput(dpy, root, wa.event_mask);
}
void
+showhide(Client *c, unsigned int ntiled) {
+ if(!c)
+ return;
+ if(ISVISIBLE(c)) { /* show clients top down */
+ if(c->isfloating || ntiled > 1) /* avoid unnecessary border reverts */
+ adjustborder(c, borderpx);
+ XMoveWindow(dpy, c->win, c->x, c->y);
+ if(!lt[sellt]->arrange || c->isfloating)
+ resize(c, c->x, c->y, c->w, c->h, True);
+ showhide(c->snext, ntiled);
+ }
+ else { /* hide clients bottom up */
+ showhide(c->snext, ntiled);
+ XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
+ }
+}
+
+
+void
+sigchld(int signal) {
+ while(0 < waitpid(-1, NULL, WNOHANG));
+}
+
+void
spawn(const Arg *arg) {
- /* The double-fork construct avoids zombie processes and keeps the code
- * clean from stupid signal handlers. */
+ signal(SIGCHLD, sigchld);
if(fork() == 0) {
- 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");
- }
+ 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);
}
- wait(0);
}
void
/* master */
c = nexttiled(clients);
mw = mfact * ww;
+ adjustborder(c, n == 1 ? 0 : borderpx);
resize(c, wx, wy, (n == 1 ? ww : mw) - 2 * c->bw, wh - 2 * c->bw, resizehints);
if(--n == 0)
h = wh;
for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
+ adjustborder(c, borderpx);
resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
- ? (wy + wh) - y : h) - 2 * c->bw, resizehints);
+ ? wy + wh - y - 2 * c->bw : h - 2 * c->bw), resizehints);
if(h != wh)
- y = c->y + c->h + 2 * c->bw;
+ y = c->y + HEIGHT(c);
}
}
if(mask) {
tagset[seltags] = mask;
- clearurgent();
arrange();
}
}
long msize;
XSizeHints size;
- XGetWMNormalHints(dpy, c->win, &size, &msize);
+ 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
c->maxa = c->mina = 0.0;
c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
- && 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, wmatom[WMName], c->name, sizeof c->name);
+ gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
+}
+
+void
+updatestatus() {
+ if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
+ strcpy(stext, "dwm-"VERSION);
+ drawbar();
}
void
XWMHints *wmh;
if((wmh = XGetWMHints(dpy, c->win))) {
- if(ISVISIBLE(c) && wmh->flags & XUrgencyHint) {
+ if(c == sel && wmh->flags & XUrgencyHint) {
wmh->flags &= ~XUrgencyHint;
XSetWMHints(dpy, c->win, wmh);
}
seltags ^= 1; /* toggle sel tagset */
if(arg->ui & TAGMASK)
tagset[seltags] = arg->ui & TAGMASK;
- clearurgent();
arrange();
}
int
main(int argc, char *argv[]) {
if(argc == 2 && !strcmp("-v", argv[1]))
- die("dwm-"VERSION", © 2006-2008 dwm engineers, see LICENSE for details\n");
+ die("dwm-"VERSION", © 2006-2009 dwm engineers, see LICENSE for details\n");
else if(argc != 1)
die("usage: dwm [-v]\n");
Got questions, comments, patches, etc.? Contact Jason Woofenden