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pendragon-dwm/dwm.c
a@null 1a26389e2b applied nsz' remark
2009-02-14 11:21:24 +00:00

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/* 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 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.
*
* 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
/* 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(x) (x->tags & tagset[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 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)
/* 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;
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 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;
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)(void);
} Layout;
typedef struct {
const char *class;
const char *instance;
const char *title;
unsigned int tags;
Bool isfloating;
} 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 attachstack(Client *c);
static void buttonpress(XEvent *e);
static void checkotherwm(void);
static void cleanup(void);
static void clearurgent(Client *c);
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 die(const char *errstr, ...);
static void drawbar(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 focusstack(const Arg *arg);
static Client *getclient(Window w);
static unsigned long getcolor(const char *colstr);
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(void);
static void movemouse(const Arg *arg);
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(const Arg *arg);
static void restack(void);
static void run(void);
static void scan(void);
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, 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 tile(void);
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 unmanage(Client *c);
static void unmapnotify(XEvent *e);
static void updatebar(void);
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 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;
static int sx, sy, sw, sh; /* X display screen geometry x, y, width, height */
static int by, bh, blw; /* bar geometry y, height and layout symbol width */
static int wx, wy, ww, wh; /* window area geometry x, y, width, height, bar excluded */
static unsigned int seltags = 0, sellt = 0;
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 Client *clients = NULL;
static Client *sel = NULL;
static Client *stack = NULL;
static Cursor cursor[CurLast];
static Display *dpy;
static DC dc;
static Layout *lt[] = { NULL, NULL };
static Window root, barwin;
/* 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[sizeof(unsigned int) * 8 < LENGTH(tags) ? -1 : 1]; };
/* 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 */
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(!c->tags)
c->tags = tagset[seltags];
}
void
arrange(void) {
unsigned int nt;
Client *c;
for(nt = 0, c = nexttiled(clients); c; c = nexttiled(c->next), nt++);
showhide(stack, nt);
focus(NULL);
if(lt[sellt]->arrange)
lt[sellt]->arrange();
restack();
}
void
attach(Client *c) {
c->next = clients;
clients = c;
}
void
attachstack(Client *c) {
c->snext = stack;
stack = c;
}
void
buttonpress(XEvent *e) {
unsigned int i, x, click;
Arg arg = {0};
Client *c;
XButtonPressedEvent *ev = &e->xbutton;
click = ClkRootWin;
if(ev->window == 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 > wx + ww - TEXTW(stext))
click = ClkStatusText;
else
click = ClkWinTitle;
}
else if((c = getclient(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 };
view(&a);
lt[sellt] = &foo;
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
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) {
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;
else if(c->isfloating || !lt[sellt]->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(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);
}
void
destroynotify(XEvent *e) {
Client *c;
XDestroyWindowEvent *ev = &e->xdestroywindow;
if((c = getclient(ev->window)))
unmanage(c);
}
void
detach(Client *c) {
Client **tc;
for(tc = &clients; *tc && *tc != c; tc = &(*tc)->next);
*tc = c->next;
}
void
detachstack(Client *c) {
Client **tc;
for(tc = &stack; *tc && *tc != c; tc = &(*tc)->snext);
*tc = c->snext;
}
void
die(const char *errstr, ...) {
va_list ap;
va_start(ap, errstr);
vfprintf(stderr, errstr, ap);
va_end(ap);
exit(EXIT_FAILURE);
}
void
drawbar(void) {
int x;
unsigned int i, occ = 0, urg = 0;
unsigned long *col;
Client *c;
for(c = 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 = tagset[seltags] & 1 << i ? dc.sel : dc.norm;
drawtext(tags[i], col, urg & 1 << i);
drawsquare(sel && sel->tags & 1 << i, occ & 1 << i, urg & 1 << i, col);
dc.x += dc.w;
}
if(blw > 0) {
dc.w = blw;
drawtext(lt[sellt]->symbol, dc.norm, False);
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(sel) {
drawtext(sel->name, dc.sel, False);
drawsquare(sel->isfixed, sel->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, 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;
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
expose(XEvent *e) {
XExposeEvent *ev = &e->xexpose;
if(ev->count == 0 && (ev->window == barwin))
drawbar();
}
void
focus(Client *c) {
if(!c || !ISVISIBLE(c))
for(c = stack; c && !ISVISIBLE(c); c = c->snext);
if(sel && sel != c) {
grabbuttons(sel, False);
XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
}
if(c) {
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);
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 && !ISVISIBLE(c); c = c->next);
if(!c)
for(c = clients; c && !ISVISIBLE(c); c = c->next);
}
else {
for(i = clients; i != 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();
}
}
Client *
getclient(Window w) {
Client *c;
for(c = clients; c && c->win != w; c = c->next);
return c;
}
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;
}
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();
{ /* grab keys */
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;
}
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(!sel)
return;
if(isprotodel(sel)) {
ev.type = ClientMessage;
ev.xclient.window = 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, sel->win, False, NoEventMask, &ev);
}
else
XKillClient(dpy, sel->win);
}
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;
/* geometry */
c->x = wa->x;
c->y = wa->y;
c->w = wa->width;
c->h = wa->height;
c->oldbw = wa->border_width;
if(c->w == sw && c->h == sh) {
c->x = sx;
c->y = sy;
c->bw = 0;
}
else {
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);
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);
updatetitle(c);
if(XGetTransientForHint(dpy, w, &trans))
t = getclient(trans);
if(t)
c->tags = t->tags;
else
applyrules(c);
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();
}
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(!getclient(ev->window))
manage(ev->window, &wa);
}
void
monocle(void) {
unsigned int n;
Client *c;
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
movemouse(const Arg *arg) {
int x, y, ocx, ocy, di, nx, ny;
unsigned int dui;
Client *c;
Window dummy;
XEvent ev;
if(!(c = sel))
return;
restack();
ocx = c->x;
ocy = c->y;
if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
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) {
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 >= wx && nx <= wx + ww
&& ny >= wy && ny <= wy + wh) {
if(abs(wx - nx) < snap)
nx = wx;
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 + 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);
}
if(!lt[sellt]->arrange || c->isfloating)
resize(c, nx, ny, c->w, c->h, False);
break;
}
}
while(ev.type != ButtonRelease);
if(usegrab)
XUngrabServer(dpy);
XUngrabPointer(dpy, CurrentTime);
}
Client *
nexttiled(Client *c) {
for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
return c;
}
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 = getclient(ev->window))) {
switch (ev->atom) {
default: break;
case XA_WM_TRANSIENT_FOR:
XGetTransientForHint(dpy, c->win, &trans);
if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
arrange();
break;
case XA_WM_NORMAL_HINTS:
updatesizehints(c);
break;
case XA_WM_HINTS:
updatewmhints(c);
drawbar();
break;
}
if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
updatetitle(c);
if(c == sel)
drawbar();
}
}
}
void
quit(const Arg *arg) {
running = False;
}
void
resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
XWindowChanges wc;
if(sizehints) {
/* see last two sentences in ICCCM 4.1.2.3 */
Bool baseismin = c->basew == c->minw && c->baseh == c->minh;
/* set minimum possible */
w = MAX(1, w);
h = MAX(1, h);
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;
else if(c->mina < (float)h / w)
h = w * c->mina;
}
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);
}
if(w <= 0 || h <= 0)
return;
if(x > sx + sw)
x = sw - WIDTH(c);
if(y > sy + sh)
y = sh - HEIGHT(c);
if(x + w + 2 * c->bw < sx)
x = sx;
if(y + h + 2 * c->bw < sy)
y = sy;
if(h < bh)
h = bh;
if(w < bh)
w = bh;
if(c->x != x || c->y != y || c->w != w || c->h != h) {
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;
XEvent ev;
if(!(c = sel))
return;
restack();
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);
if(usegrab)
XGrabServer(dpy);
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 >= wx && nw <= wx + ww
&& nh >= wy && nh <= wy + wh) {
if(!c->isfloating && lt[sellt]->arrange
&& (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
togglefloating(NULL);
}
if(!lt[sellt]->arrange || c->isfloating)
resize(c, c->x, c->y, nw, nh, True);
break;
}
}
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
restack(void) {
Client *c;
XEvent ev;
XWindowChanges wc;
drawbar();
if(!sel)
return;
if(sel->isfloating || !lt[sellt]->arrange)
XRaiseWindow(dpy, sel->win);
if(lt[sellt]->arrange) {
wc.stack_mode = Below;
wc.sibling = barwin;
for(c = 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
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 != lt[sellt])
sellt ^= 1;
if(arg && arg->v)
lt[sellt] = (Layout *)arg->v;
if(sel)
arrange();
else
drawbar();
}
/* arg > 1.0 will set mfact absolutly */
void
setmfact(const Arg *arg) {
float f;
if(!arg || !lt[sellt]->arrange)
return;
f = arg->f < 1.0 ? arg->f + mfact : arg->f - 1.0;
if(f < 0.1 || f > 0.9)
return;
mfact = f;
arrange();
}
void
setup(void) {
unsigned int i;
int w;
XSetWindowAttributes wa;
/* init screen */
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);
initfont(font);
sx = 0;
sy = 0;
sw = DisplayWidth(dpy, screen);
sh = DisplayHeight(dpy, screen);
bh = dc.h = dc.font.height + 2;
lt[0] = &layouts[0];
lt[1] = &layouts[1 % LENGTH(layouts)];
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 */
wa.cursor = 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, 0);
XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
if(!dc.font.set)
XSetFont(dpy, dc.gc, dc.font.xfont->fid);
/* init bar */
for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
w = TEXTW(layouts[i].symbol);
blw = MAX(blw, w);
}
wa.override_redirect = 1;
wa.background_pixmap = ParentRelative;
wa.event_mask = ButtonPressMask|ExposureMask;
barwin = XCreateWindow(dpy, root, wx, by, ww, bh, 0, DefaultDepth(dpy, screen),
CopyFromParent, DefaultVisual(dpy, screen),
CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
XDefineCursor(dpy, barwin, cursor[CurNormal]);
XMapRaised(dpy, barwin);
updatestatus();
/* EWMH support per view */
XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
PropModeReplace, (unsigned char *) netatom, NetLast);
/* select for events */
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, 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) {
signal(SIGCHLD, sigchld);
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(sel && arg->ui & TAGMASK) {
sel->tags = arg->ui & TAGMASK;
arrange();
}
}
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(void) {
int x, y, h, w, mw;
unsigned int i, n;
Client *c;
for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next), n++);
if(n == 0)
return;
/* 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)
return;
/* tile stack */
x = (wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : wx + mw;
y = wy;
w = (wx + mw > c->x + c->w) ? wx + ww - x : ww - mw;
h = wh / n;
if(h < bh)
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 - 2 * c->bw : h - 2 * c->bw), resizehints);
if(h != wh)
y = c->y + HEIGHT(c);
}
}
void
togglebar(const Arg *arg) {
showbar = !showbar;
updategeom();
updatebar();
arrange();
}
void
togglefloating(const Arg *arg) {
if(!sel)
return;
sel->isfloating = !sel->isfloating || sel->isfixed;
if(sel->isfloating)
resize(sel, sel->x, sel->y, sel->w, sel->h, True);
arrange();
}
void
toggletag(const Arg *arg) {
unsigned int mask;
if (!sel)
return;
mask = sel->tags ^ (arg->ui & TAGMASK);
if(mask) {
sel->tags = mask;
arrange();
}
}
void
toggleview(const Arg *arg) {
unsigned int mask = tagset[seltags] ^ (arg->ui & TAGMASK);
if(mask) {
tagset[seltags] = mask;
arrange();
}
}
void
unmanage(Client *c) {
XWindowChanges wc;
wc.border_width = c->oldbw;
/* The server grab construct avoids race conditions. */
XGrabServer(dpy);
XSetErrorHandler(xerrordummy);
XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
detach(c);
detachstack(c);
if(sel == c)
focus(NULL);
XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
setclientstate(c, WithdrawnState);
free(c);
XSync(dpy, False);
XSetErrorHandler(xerror);
XUngrabServer(dpy);
arrange();
}
void
unmapnotify(XEvent *e) {
Client *c;
XUnmapEvent *ev = &e->xunmap;
if((c = getclient(ev->window)))
unmanage(c);
}
void
updatebar(void) {
if(dc.drawable != 0)
XFreePixmap(dpy, dc.drawable);
dc.drawable = XCreatePixmap(dpy, root, ww, bh, DefaultDepth(dpy, screen));
XMoveResizeWindow(dpy, barwin, wx, by, ww, bh);
}
void
updategeom(void) {
#ifdef XINERAMA
int n, i = 0;
XineramaScreenInfo *info = NULL;
/* window area geometry */
if(XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
if(n > 1) {
int di, x, y;
unsigned int dui;
Window dummy;
if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui))
for(i = 0; i < n; i++)
if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
break;
}
wx = info[i].x_org;
wy = showbar && topbar ? info[i].y_org + bh : info[i].y_org;
ww = info[i].width;
wh = showbar ? info[i].height - bh : info[i].height;
XFree(info);
}
else
#endif
{
wx = sx;
wy = showbar && topbar ? sy + bh : sy;
ww = sw;
wh = showbar ? sh - bh : sh;
}
/* bar position */
by = showbar ? (topbar ? wy - bh : wy + wh) : -bh;
}
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 / (float)size.min_aspect.x;
c->maxa = (float)size.max_aspect.x / (float)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);
}
void
updatestatus() {
if(!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
strcpy(stext, "dwm-"VERSION);
drawbar();
}
void
updatewmhints(Client *c) {
XWMHints *wmh;
if((wmh = XGetWMHints(dpy, c->win))) {
if(c == 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) == tagset[seltags])
return;
seltags ^= 1; /* toggle sel tagset */
if(arg->ui & TAGMASK)
tagset[seltags] = arg->ui & TAGMASK;
arrange();
}
/* 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 = sel;
if(!lt[sellt]->arrange || lt[sellt]->arrange == monocle || (sel && sel->isfloating))
return;
if(c == nexttiled(clients))
if(!c || !(c = nexttiled(c->next)))
return;
detach(c);
attach(c);
focus(c);
arrange();
}
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())
fprintf(stderr, "warning: no locale support\n");
if(!(dpy = XOpenDisplay(0)))
die("dwm: cannot open display\n");
checkotherwm();
setup();
scan();
run();
cleanup();
XCloseDisplay(dpy);
return 0;
}
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