dwm/dwm.c

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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 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 <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xproto.h>
#include <X11/Xutil.h>
#include <X11/cursorfont.h>
#include <X11/keysym.h>
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#include <errno.h>
#include <locale.h>
#include <signal.h>
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#include <stdarg.h>
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
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#include <sys/types.h>
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#include <sys/wait.h>
#include <unistd.h>
#ifdef XINERAMA
#include <X11/extensions/Xinerama.h>
#endif /* XINERAMA */
#include <X11/Xft/Xft.h>
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#include "drw.h"
#include "util.h"
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/* 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 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) (drw_fontset_getwidth(drw, (X)) + lrpad)
/* enums */
enum
{
CurNormal,
CurResize,
CurMove,
CurLast
}; /* cursor */
enum
{
SchemeNorm,
SchemeSel
}; /* color schemes */
enum
{
NetSupported,
NetWMName,
NetWMState,
NetWMCheck,
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;
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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;
int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
Client* next;
Client* snext;
Monitor* mon;
Window win;
};
typedef struct
{
unsigned int mod;
KeySym keysym;
void (*func)(const Arg*);
const Arg arg;
} Key;
typedef struct
{
const char* symbol;
void (*arrange)(Monitor*);
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} 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];
int showbar;
int topbar;
Client* clients;
Client* sel;
Client* stack;
Monitor* next;
Window barwin;
const Layout* lt[2];
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};
typedef struct
{
const char* class;
const char* instance;
const char* title;
unsigned int tags;
int isfloating;
int monitor;
} Rule;
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/* function declarations */
static void
applyrules(Client* c);
static int
applysizehints(Client* c, int* x, int* y, int* w, int* h, int interact);
static void
arrange(Monitor* m);
static void
arrangemon(Monitor* m);
static void
attach(Client* c);
static void
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attachbottom(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
clientmessage(XEvent* e);
static void
configure(Client* c);
static void
configurenotify(XEvent* e);
static void
configurerequest(XEvent* e);
static Monitor*
createmon(void);
static void
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deck(Monitor* m);
static void
destroynotify(XEvent* e);
static void
detach(Client* c);
static void
detachstack(Client* c);
static Monitor*
dirtomon(int dir);
static void
drawbar(Monitor* m);
static void
drawbars(void);
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 Atom
getatomprop(Client* c, Atom prop);
static int
getrootptr(int* x, int* y);
static long
getstate(Window w);
static int
gettextprop(Window w, Atom atom, char* text, unsigned int size);
static void
grabbuttons(Client* c, int focused);
static void
grabkeys(void);
static void
incnmaster(const Arg* arg);
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, int 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 int
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, int fullscreen);
static void
setlayout(const Arg* arg);
static void
setmfact(const Arg* arg);
static void
setup(void);
static void
seturgent(Client* c, int urg);
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 void
tile(Monitor*);
static void
togglebar(const Arg* arg);
static void
togglefloating(const Arg* arg);
static void
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togglefullscr(const Arg* arg);
static void
toggletag(const Arg* arg);
static void
toggleview(const Arg* arg);
static void
unfocus(Client* c, int setfocus);
static void
unmanage(Client* c, int destroyed);
static void
unmapnotify(XEvent* e);
static void
updatebarpos(Monitor* m);
static void
updatebars(void);
static void
updateclientlist(void);
static int
updategeom(void);
static void
updatenumlockmask(void);
static void
updatesizehints(Client* c);
static void
updatestatus(void);
static void
updatetitle(Client* c);
static void
updatewindowtype(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 */
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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 lrpad; /* sum of left and right padding for text */
static int (*xerrorxlib)(Display*, XErrorEvent*);
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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
};
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static Atom wmatom[WMLast], netatom[NetLast];
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static int running = 1;
static Cur* cursor[CurLast];
static Clr** scheme;
static Display* dpy;
static Drw* drw;
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static Monitor *mons, *selmon;
static Window root, wmcheckwin;
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/* configuration, allows nested code to access above variables */
#include "config.h"
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/* compile-time check if all tags fit into an unsigned int bit array. */
struct NumTags
{
char limitexceeded[LENGTH(tags) > 31 ? -1 : 1];
};
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/* 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 = 0;
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];
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}
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int
applysizehints(Client* c, int* x, int* y, int* w, int* h, int interact)
{
int 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;
}
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void
attachbottom(Client* c)
{
c->next = NULL;
Client* below = c->mon->clients;
if (below) {
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for (; below->next; below = below->next)
;
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below->next = c;
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} else
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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, 1);
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 - (int)TEXTW(stext))
click = ClkStatusText;
else
click = ClkWinTitle;
} else if ((c = wintoclient(ev->window))) {
focus(c);
restack(selmon);
XAllowEvents(dpy, ReplayPointer, CurrentTime);
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);
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}
void
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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);
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}
void
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cleanup(void)
{
Arg a = { .ui = ~0 };
Layout foo = { "", NULL };
Monitor* m;
size_t i;
view(&a);
selmon->lt[selmon->sellt] = &foo;
for (m = mons; m; m = m->next)
while (m->stack)
unmanage(m->stack, 0);
XUngrabKey(dpy, AnyKey, AnyModifier, root);
while (mons)
cleanupmon(mons);
for (i = 0; i < CurLast; i++)
drw_cur_free(drw, cursor[i]);
for (i = 0; i < LENGTH(colors); i++)
free(scheme[i]);
XDestroyWindow(dpy, wmcheckwin);
drw_free(drw);
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
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 (c != selmon->sel && !c->isurgent)
seturgent(c, 1);
}
}
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;
Client* c;
XConfigureEvent* ev = &e->xconfigure;
int dirty;
/* TODO: updategeom handling sucks, needs to be simplified */
if (ev->window == root) {
dirty = (sw != ev->width || sh != ev->height);
sw = ev->width;
sh = ev->height;
if (updategeom() || dirty) {
drw_resize(drw, sw, bh);
updatebars();
for (m = mons; m; m = m->next) {
for (c = m->clients; c; c = c->next)
if (c->isfullscreen)
resizeclient(c, m->mx, m->my, m->mw, m->mh);
XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
}
focus(NULL);
arrange(NULL);
}
}
}
void
configurerequest(XEvent* e)
{
Client* c;
Monitor* m;
XConfigureRequestEvent* ev = &e->xconfigurerequest;
XWindowChanges wc;
if ((c = wintoclient(ev->window))) {
if (ev->value_mask & CWBorderWidth)
c->bw = ev->border_width;
else if (c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
m = c->mon;
if (ev->value_mask & CWX) {
c->oldx = c->x;
c->x = m->mx + ev->x;
}
if (ev->value_mask & CWY) {
c->oldy = c->y;
c->y = m->my + ev->y;
}
if (ev->value_mask & CWWidth) {
c->oldw = c->w;
c->w = ev->width;
}
if (ev->value_mask & CWHeight) {
c->oldh = c->h;
c->h = ev->height;
}
if ((c->x + c->w) > m->mx + m->mw && c->isfloating)
c->x = m->mx +
(m->mw / 2 - WIDTH(c) / 2); /* center in x direction */
if ((c->y + c->h) > m->my + m->mh && c->isfloating)
c->y = m->my +
(m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
if ((ev->value_mask & (CWX | CWY)) &&
!(ev->value_mask & (CWWidth | CWHeight)))
configure(c);
if (ISVISIBLE(c))
XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
} else
configure(c);
} else {
wc.x = ev->x;
wc.y = ev->y;
wc.width = ev->width;
wc.height = ev->height;
wc.border_width = ev->border_width;
wc.sibling = ev->above;
wc.stack_mode = ev->detail;
XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
}
XSync(dpy, False);
}
Monitor*
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createmon(void)
{
Monitor* m;
m = ecalloc(1, sizeof(Monitor));
m->tagset[0] = m->tagset[1] = 1;
m->mfact = mfact;
m->nmaster = nmaster;
m->showbar = showbar;
m->topbar = topbar;
m->lt[0] = &layouts[0];
m->lt[1] = &layouts[1 % LENGTH(layouts)];
strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
return m;
}
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void
deck(Monitor* m)
{
unsigned int i, n, h, mw, my;
Client* c;
for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++)
;
if (n == 0)
return;
if (n > m->nmaster) {
mw = m->nmaster ? m->ww * m->mfact : 0;
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// snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n - m->nmaster);
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} else
mw = m->ww;
for (i = my = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
if (i < m->nmaster) {
h = (m->wh - my) / (MIN(n, m->nmaster) - i);
resize(
c, m->wx, m->wy + my, mw - (2 * c->bw), h - (2 * c->bw), False);
my += HEIGHT(c);
} else
resize(c,
m->wx + mw,
m->wy,
m->ww - mw - (2 * c->bw),
m->wh - (2 * c->bw),
False);
}
void
destroynotify(XEvent* e)
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{
XDestroyWindowEvent* ev = &e->xdestroywindow;
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Client* c = wintoclient(ev->window);
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if (c)
unmanage(c, 1);
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}
void
detach(Client* c)
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{
Client** tc;
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for (tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next)
;
*tc = c->next;
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}
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void
detachstack(Client* c)
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{
Client **tc, *t;
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for (tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext)
;
*tc = c->snext;
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if (c == c->mon->sel) {
for (t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext)
;
c->mon->sel = t;
}
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}
Monitor*
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dirtomon(int dir)
{
Monitor* m = NULL;
if (dir > 0) {
if (!(m = selmon->next))
m = mons;
} else if (selmon == mons)
for (m = mons; m->next; m = m->next)
;
else
for (m = mons; m->next != selmon; m = m->next)
;
return m;
}
void
drawbar(Monitor* m)
{
int x, w, tw = 0;
int boxs = drw->fonts->h / 9;
int boxw = drw->fonts->h / 6 + 2;
unsigned int i, occ = 0, urg = 0;
Client* c;
/* draw status first so it can be overdrawn by tags later */
if (m == selmon) { /* status is only drawn on selected monitor */
drw_setscheme(drw, scheme[SchemeNorm]);
tw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
drw_text(drw, m->ww - tw, 0, tw, bh, 0, stext, 0);
}
for (c = m->clients; c; c = c->next) {
occ |= c->tags;
if (c->isurgent)
urg |= c->tags;
}
x = 0;
for (i = 0; i < LENGTH(tags); i++) {
w = TEXTW(tags[i]);
drw_setscheme(
drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
if (occ & 1 << i)
drw_rect(drw,
x + boxs,
boxs,
boxw,
boxw,
m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
urg & 1 << i);
x += w;
}
w = blw = TEXTW(m->ltsymbol);
drw_setscheme(drw, scheme[SchemeNorm]);
x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
if ((w = m->ww - tw - x) > bh) {
if (m->sel) {
drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
if (m->sel->isfloating)
drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
} else {
drw_setscheme(drw, scheme[SchemeNorm]);
drw_rect(drw, x, 0, w, bh, 1, 1);
}
}
drw_map(drw, m->barwin, 0, 0, m->ww, bh);
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}
void
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drawbars(void)
{
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for (Monitor* m = mons; m; m = m->next)
drawbar(m);
}
void
enternotify(XEvent* e)
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{
Client* c;
Monitor* m;
XCrossingEvent* ev = &e->xcrossing;
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if ((ev->mode != NotifyNormal || ev->detail == NotifyInferior) &&
ev->window != root)
return;
c = wintoclient(ev->window);
m = c ? c->mon : wintomon(ev->window);
if (m != selmon) {
unfocus(selmon->sel, 1);
selmon = m;
} else if (!c || c == selmon->sel)
return;
focus(c);
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}
void
expose(XEvent* e)
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{
Monitor* m;
XExposeEvent* ev = &e->xexpose;
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if (ev->count == 0 && (m = wintomon(ev->window)))
drawbar(m);
}
void
focus(Client* c)
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{
if (!c || !ISVISIBLE(c))
for (c = selmon->stack; c && !ISVISIBLE(c); c = c->snext)
;
if (selmon->sel && selmon->sel != c)
unfocus(selmon->sel, 0);
if (c) {
if (c->mon != selmon)
selmon = c->mon;
if (c->isurgent)
seturgent(c, 0);
detachstack(c);
attachstack(c);
grabbuttons(c, 1);
XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
setfocus(c);
} else {
XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
}
selmon->sel = c;
drawbars();
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}
/* there are some broken focus acquiring clients needing extra handling */
void
focusin(XEvent* e)
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{
XFocusChangeEvent* ev = &e->xfocus;
if (selmon->sel && ev->window != selmon->sel->win)
setfocus(selmon->sel);
}
void
focusmon(const Arg* arg)
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{
Monitor* m;
if (!mons->next)
return;
if ((m = dirtomon(arg->i)) == selmon)
return;
unfocus(selmon->sel, 0);
selmon = m;
focus(NULL);
}
void
focusstack(const Arg* arg)
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{
Client *c = NULL, *i;
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if (!selmon->sel)
return;
if (arg->i > 0) {
for (c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next)
;
if (!c)
for (c = selmon->clients; c && !ISVISIBLE(c); c = c->next)
;
} else {
for (i = selmon->clients; i != selmon->sel; i = i->next)
if (ISVISIBLE(i))
c = i;
if (!c)
for (; i; i = i->next)
if (ISVISIBLE(i))
c = i;
}
if (c) {
focus(c);
restack(selmon);
}
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}
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Atom
getatomprop(Client* c, Atom prop)
{
int di;
unsigned long dl;
unsigned char* p = NULL;
Atom da, atom = None;
if (XGetWindowProperty(dpy,
c->win,
prop,
0L,
sizeof atom,
False,
XA_ATOM,
&da,
&di,
&dl,
&dl,
&p) == Success &&
p) {
atom = *(Atom*)p;
XFree(p);
}
return atom;
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}
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int
getrootptr(int* x, int* y)
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{
int di;
unsigned int dui;
Window dummy;
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return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
}
long
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getstate(Window w)
{
int format;
long result = -1;
unsigned char* p = NULL;
unsigned long n, extra;
Atom real;
if (XGetWindowProperty(dpy,
w,
wmatom[WMState],
0L,
2L,
False,
wmatom[WMState],
&real,
&format,
&n,
&extra,
(unsigned char**)&p) != Success)
return -1;
if (n != 0)
result = *p;
XFree(p);
return result;
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}
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int
gettextprop(Window w, Atom atom, char* text, unsigned int size)
{
char** list = NULL;
int n;
XTextProperty name;
if (!text || size == 0)
return 0;
text[0] = '\0';
if (!XGetTextProperty(dpy, w, &name, atom) || !name.nitems)
return 0;
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 1;
}
void
grabbuttons(Client* c, int focused)
{
updatenumlockmask();
{
unsigned int i, j;
unsigned int modifiers[] = {
0, LockMask, numlockmask, numlockmask | LockMask
};
XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
if (!focused)
XGrabButton(dpy,
AnyButton,
AnyModifier,
c->win,
False,
BUTTONMASK,
GrabModeSync,
GrabModeSync,
None,
None);
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);
}
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}
void
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grabkeys(void)
{
updatenumlockmask();
{
unsigned int i, j;
unsigned int modifiers[] = {
0, LockMask, numlockmask, numlockmask | LockMask
};
KeyCode code;
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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);
}
}
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void
incnmaster(const Arg* arg)
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{
selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
arrange(selmon);
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}
#ifdef XINERAMA
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static int
isuniquegeom(XineramaScreenInfo* unique, size_t n, XineramaScreenInfo* info)
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{
while (n--)
if (unique[n].x_org == info->x_org && unique[n].y_org == info->y_org &&
unique[n].width == info->width && unique[n].height == info->height)
return 0;
return 1;
}
#endif /* XINERAMA */
void
keypress(XEvent* e)
{
unsigned int i;
KeySym keysym;
XKeyEvent* ev;
ev = &e->xkey;
keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
for (i = 0; i < LENGTH(keys); i++)
if (keysym == keys[i].keysym &&
CLEANMASK(keys[i].mod) == CLEANMASK(ev->state) && keys[i].func)
keys[i].func(&(keys[i].arg));
}
void
killclient(const Arg* arg)
{
if (!selmon->sel)
return;
if (!sendevent(selmon->sel, wmatom[WMDelete])) {
XGrabServer(dpy);
XSetErrorHandler(xerrordummy);
XSetCloseDownMode(dpy, DestroyAll);
XKillClient(dpy, selmon->sel->win);
XSync(dpy, False);
XSetErrorHandler(xerror);
XUngrabServer(dpy);
}
}
void
manage(Window w, XWindowAttributes* wa)
{
Client *c, *t = NULL;
Window trans = None;
XWindowChanges wc;
c = ecalloc(1, sizeof(Client));
c->win = w;
/* geometry */
c->x = c->oldx = wa->x;
c->y = c->oldy = wa->y;
c->w = c->oldw = wa->width;
c->h = c->oldh = wa->height;
c->oldbw = wa->border_width;
updatetitle(c);
if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
c->mon = t->mon;
c->tags = t->tags;
} else {
c->mon = selmon;
applyrules(c);
}
if (c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
c->x = c->mon->mx + c->mon->mw - WIDTH(c);
if (c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
c->y = c->mon->my + c->mon->mh - HEIGHT(c);
c->x = MAX(c->x, c->mon->mx);
/* only fix client y-offset, if the client center might cover the bar */
c->y =
MAX(c->y,
((c->mon->by == c->mon->my) && (c->x + (c->w / 2) >= c->mon->wx) &&
(c->x + (c->w / 2) < c->mon->wx + c->mon->ww))
? bh
: c->mon->my);
c->bw = borderpx;
wc.border_width = c->bw;
XConfigureWindow(dpy, w, CWBorderWidth, &wc);
XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColBorder].pixel);
configure(c); /* propagates border_width, if size doesn't change */
updatewindowtype(c);
updatesizehints(c);
updatewmhints(c);
XSelectInput(dpy,
w,
EnterWindowMask | FocusChangeMask | PropertyChangeMask |
StructureNotifyMask);
grabbuttons(c, 0);
if (!c->isfloating)
c->isfloating = c->oldstate = trans != None || c->isfixed;
if (c->isfloating)
XRaiseWindow(dpy, c->win);
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attachbottom(c);
attachstack(c);
XChangeProperty(dpy,
root,
netatom[NetClientList],
XA_WINDOW,
32,
PropModeAppend,
(unsigned char*)&(c->win),
1);
XMoveResizeWindow(dpy,
c->win,
c->x + 2 * sw,
c->y,
c->w,
c->h); /* some windows require this */
setclientstate(c, NormalState);
if (c->mon == selmon)
unfocus(selmon->sel, 0);
c->mon->sel = c;
arrange(c->mon);
XMapWindow(dpy, c->win);
focus(NULL);
}
void
mappingnotify(XEvent* e)
{
XMappingEvent* ev = &e->xmapping;
XRefreshKeyboardMapping(ev);
if (ev->request == MappingKeyboard)
grabkeys();
}
void
maprequest(XEvent* e)
{
static XWindowAttributes wa;
XMapRequestEvent* ev = &e->xmaprequest;
if (!XGetWindowAttributes(dpy, ev->window, &wa))
return;
if (wa.override_redirect)
return;
if (!wintoclient(ev->window))
manage(ev->window, &wa);
}
void
monocle(Monitor* m)
{
unsigned int n = 0;
Client* c;
for (c = m->clients; c; c = c->next)
if (ISVISIBLE(c))
n++;
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// if (n > 0) [> override layout symbol <]
// snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
for (c = nexttiled(m->clients); c; c = nexttiled(c->next))
resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, 0);
}
void
motionnotify(XEvent* e)
{
static Monitor* mon = NULL;
Monitor* m;
XMotionEvent* ev = &e->xmotion;
if (ev->window != root)
return;
if ((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
unfocus(selmon->sel, 1);
selmon = m;
focus(NULL);
}
mon = m;
}
void
movemouse(const Arg* arg)
{
int x, y, ocx, ocy, nx, ny;
Client* c;
Monitor* m;
XEvent ev;
Time lasttime = 0;
if (!(c = selmon->sel))
return;
if (c->isfullscreen) /* no support moving fullscreen windows by mouse */
return;
restack(selmon);
ocx = c->x;
ocy = c->y;
if (XGrabPointer(dpy,
root,
False,
MOUSEMASK,
GrabModeAsync,
GrabModeAsync,
None,
cursor[CurMove]->cursor,
CurrentTime) != GrabSuccess)
return;
if (!getrootptr(&x, &y))
return;
do {
XMaskEvent(
dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
switch (ev.type) {
case ConfigureRequest:
case Expose:
case MapRequest:
handler[ev.type](&ev);
break;
case MotionNotify:
if ((ev.xmotion.time - lasttime) <= (1000 / 60))
continue;
lasttime = ev.xmotion.time;
nx = ocx + (ev.xmotion.x - x);
ny = ocy + (ev.xmotion.y - y);
if (abs(selmon->wx - nx) < snap)
nx = selmon->wx;
else if (abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) <
snap)
nx = selmon->wx + selmon->ww - WIDTH(c);
if (abs(selmon->wy - ny) < snap)
ny = selmon->wy;
else if (abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) <
snap)
ny = selmon->wy + selmon->wh - HEIGHT(c);
if (!c->isfloating && selmon->lt[selmon->sellt]->arrange &&
(abs(nx - c->x) > snap || abs(ny - c->y) > snap))
togglefloating(NULL);
if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
resize(c, nx, ny, c->w, c->h, 1);
break;
}
} while (ev.type != ButtonRelease);
XUngrabPointer(dpy, CurrentTime);
if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
sendmon(c, m);
selmon = m;
focus(NULL);
}
}
Client*
nexttiled(Client* c)
{
for (; c && (c->isfloating || !ISVISIBLE(c)); c = c->next)
;
return c;
}
void
pop(Client* c)
{
detach(c);
attach(c);
focus(c);
arrange(c->mon);
}
void
propertynotify(XEvent* e)
{
Client* c;
Window trans;
XPropertyEvent* ev = &e->xproperty;
if ((ev->window == root) && (ev->atom == XA_WM_NAME))
updatestatus();
else if (ev->state == PropertyDelete)
return; /* ignore */
else if ((c = wintoclient(ev->window))) {
switch (ev->atom) {
default:
break;
case XA_WM_TRANSIENT_FOR:
if (!c->isfloating &&
(XGetTransientForHint(dpy, c->win, &trans)) &&
(c->isfloating = (wintoclient(trans)) != NULL))
arrange(c->mon);
break;
case XA_WM_NORMAL_HINTS:
updatesizehints(c);
break;
case XA_WM_HINTS:
updatewmhints(c);
drawbars();
break;
}
if (ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
updatetitle(c);
if (c == c->mon->sel)
drawbar(c->mon);
}
if (ev->atom == netatom[NetWMWindowType])
updatewindowtype(c);
}
}
void
quit(const Arg* arg)
{
running = 0;
}
Monitor*
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recttomon(int x, int y, int w, int h)
{
Monitor *m, *r = selmon;
int a, area = 0;
for (m = mons; m; m = m->next)
if ((a = INTERSECT(x, y, w, h, m)) > area) {
area = a;
r = m;
}
return r;
}
void
resize(Client* c, int x, int y, int w, int h, int interact)
{
if (applysizehints(c, &x, &y, &w, &h, interact))
resizeclient(c, x, y, w, h);
}
void
resizeclient(Client* c, int x, int y, int w, int h)
{
XWindowChanges wc;
c->oldx = c->x;
c->x = wc.x = x;
c->oldy = c->y;
c->y = wc.y = y;
c->oldw = c->w;
c->w = wc.width = w;
c->oldh = c->h;
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, nw, nh;
Client* c;
Monitor* m;
XEvent ev;
Time lasttime = 0;
if (!(c = selmon->sel))
return;
if (c->isfullscreen) /* no support resizing fullscreen windows by mouse */
return;
restack(selmon);
ocx = c->x;
ocy = c->y;
if (XGrabPointer(dpy,
root,
False,
MOUSEMASK,
GrabModeAsync,
GrabModeAsync,
None,
cursor[CurResize]->cursor,
CurrentTime) != GrabSuccess)
return;
XWarpPointer(
dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
do {
XMaskEvent(
dpy, MOUSEMASK | ExposureMask | SubstructureRedirectMask, &ev);
switch (ev.type) {
case ConfigureRequest:
case Expose:
case MapRequest:
handler[ev.type](&ev);
break;
case MotionNotify:
if ((ev.xmotion.time - lasttime) <= (1000 / 60))
continue;
lasttime = ev.xmotion.time;
nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
if (c->mon->wx + nw >= selmon->wx &&
c->mon->wx + nw <= selmon->wx + selmon->ww &&
c->mon->wy + nh >= selmon->wy &&
c->mon->wy + nh <= selmon->wy + selmon->wh) {
if (!c->isfloating && selmon->lt[selmon->sellt]->arrange &&
(abs(nw - c->w) > snap || abs(nh - c->h) > snap))
togglefloating(NULL);
}
if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
resize(c, c->x, c->y, nw, nh, 1);
break;
}
} while (ev.type != ButtonRelease);
XWarpPointer(
dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
XUngrabPointer(dpy, CurrentTime);
while (XCheckMaskEvent(dpy, EnterWindowMask, &ev))
;
if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
sendmon(c, m);
selmon = m;
focus(NULL);
}
}
void
restack(Monitor* m)
{
Client* c;
XEvent ev;
XWindowChanges wc;
drawbar(m);
if (!m->sel)
return;
if (m->sel->isfloating || !m->lt[m->sellt]->arrange)
XRaiseWindow(dpy, m->sel->win);
if (m->lt[m->sellt]->arrange) {
wc.stack_mode = Below;
wc.sibling = m->barwin;
for (c = m->stack; c; c = c->snext)
if (!c->isfloating && ISVISIBLE(c)) {
XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
wc.sibling = c->win;
}
}
XSync(dpy, False);
while (XCheckMaskEvent(dpy, EnterWindowMask, &ev))
;
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}
void
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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 */
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}
void
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scan(void)
{
unsigned int i, num;
Window d1, d2, *wins = NULL;
XWindowAttributes wa;
if (XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
for (i = 0; i < num; i++) {
if (!XGetWindowAttributes(dpy, wins[i], &wa) ||
wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
continue;
if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
manage(wins[i], &wa);
}
for (i = 0; i < num; i++) { /* now the transients */
if (!XGetWindowAttributes(dpy, wins[i], &wa))
continue;
if (XGetTransientForHint(dpy, wins[i], &d1) &&
(wa.map_state == IsViewable ||
getstate(wins[i]) == IconicState))
manage(wins[i], &wa);
}
if (wins)
XFree(wins);
}
}
void
sendmon(Client* c, Monitor* m)
{
if (c->mon == m)
return;
unfocus(c, 1);
detach(c);
detachstack(c);
c->mon = m;
c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
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attachbottom(c);
attachstack(c);
focus(NULL);
arrange(NULL);
}
void
setclientstate(Client* c, long state)
{
long data[] = { state, None };
XChangeProperty(dpy,
c->win,
wmatom[WMState],
wmatom[WMState],
32,
PropModeReplace,
(unsigned char*)data,
2);
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}
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int
sendevent(Client* c, Atom proto)
{
int n;
Atom* protocols;
int exists = 0;
XEvent ev;
if (XGetWMProtocols(dpy, c->win, &protocols, &n)) {
while (!exists && n--)
exists = protocols[n] == proto;
XFree(protocols);
}
if (exists) {
ev.type = ClientMessage;
ev.xclient.window = c->win;
ev.xclient.message_type = wmatom[WMProtocols];
ev.xclient.format = 32;
ev.xclient.data.l[0] = proto;
ev.xclient.data.l[1] = CurrentTime;
XSendEvent(dpy, c->win, False, NoEventMask, &ev);
}
return exists;
}
void
setfocus(Client* c)
{
if (!c->neverfocus) {
XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
XChangeProperty(dpy,
root,
netatom[NetActiveWindow],
XA_WINDOW,
32,
PropModeReplace,
(unsigned char*)&(c->win),
1);
}
sendevent(c, wmatom[WMTakeFocus]);
}
void
setfullscreen(Client* c, int fullscreen)
{
if (fullscreen && !c->isfullscreen) {
XChangeProperty(dpy,
c->win,
netatom[NetWMState],
XA_ATOM,
32,
PropModeReplace,
(unsigned char*)&netatom[NetWMFullscreen],
1);
c->isfullscreen = 1;
c->oldstate = c->isfloating;
c->oldbw = c->bw;
c->bw = 0;
c->isfloating = 1;
resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
XRaiseWindow(dpy, c->win);
} else if (!fullscreen && c->isfullscreen) {
XChangeProperty(dpy,
c->win,
netatom[NetWMState],
XA_ATOM,
32,
PropModeReplace,
(unsigned char*)0,
0);
c->isfullscreen = 0;
c->isfloating = c->oldstate;
c->bw = c->oldbw;
c->x = c->oldx;
c->y = c->oldy;
c->w = c->oldw;
c->h = c->oldh;
resizeclient(c, c->x, c->y, c->w, c->h);
arrange(c->mon);
}
}
void
setlayout(const Arg* arg)
{
if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
selmon->sellt ^= 1;
if (arg && arg->v)
selmon->lt[selmon->sellt] = (Layout*)arg->v;
strncpy(selmon->ltsymbol,
selmon->lt[selmon->sellt]->symbol,
sizeof selmon->ltsymbol);
if (selmon->sel)
arrange(selmon);
else
drawbar(selmon);
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}
/* arg > 1.0 will set mfact absolutely */
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void
setmfact(const Arg* arg)
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{
if (!arg || !selmon->lt[selmon->sellt]->arrange)
return;
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const float f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
if (f < 0.05 || f > 0.95)
return;
selmon->mfact = f;
arrange(selmon);
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}
void
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setup(void)
{
int i;
XSetWindowAttributes wa;
Atom utf8string;
/* clean up any zombies immediately */
sigchld(0);
/* init screen */
screen = DefaultScreen(dpy);
sw = DisplayWidth(dpy, screen);
sh = DisplayHeight(dpy, screen);
root = RootWindow(dpy, screen);
drw = drw_create(dpy, screen, root, sw, sh);
if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
die("no fonts could be loaded.");
lrpad = drw->fonts->h;
bh = drw->fonts->h + 2;
updategeom();
/* init atoms */
utf8string = XInternAtom(dpy, "UTF8_STRING", False);
wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
netatom[NetWMFullscreen] =
XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
netatom[NetWMWindowTypeDialog] =
XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
/* init cursors */
cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
cursor[CurResize] = drw_cur_create(drw, XC_sizing);
cursor[CurMove] = drw_cur_create(drw, XC_fleur);
/* init appearance */
scheme = ecalloc(LENGTH(colors), sizeof(Clr*));
for (i = 0; i < LENGTH(colors); i++)
scheme[i] = drw_scm_create(drw, colors[i], 3);
/* init bars */
updatebars();
updatestatus();
/* supporting window for NetWMCheck */
wmcheckwin = XCreateSimpleWindow(dpy, root, 0, 0, 1, 1, 0, 0, 0);
XChangeProperty(dpy,
wmcheckwin,
netatom[NetWMCheck],
XA_WINDOW,
32,
PropModeReplace,
(unsigned char*)&wmcheckwin,
1);
XChangeProperty(dpy,
wmcheckwin,
netatom[NetWMName],
utf8string,
8,
PropModeReplace,
(unsigned char*)"dwm",
3);
XChangeProperty(dpy,
root,
netatom[NetWMCheck],
XA_WINDOW,
32,
PropModeReplace,
(unsigned char*)&wmcheckwin,
1);
/* EWMH support per view */
XChangeProperty(dpy,
root,
netatom[NetSupported],
XA_ATOM,
32,
PropModeReplace,
(unsigned char*)netatom,
NetLast);
XDeleteProperty(dpy, root, netatom[NetClientList]);
/* select events */
wa.cursor = cursor[CurNormal]->cursor;
wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask |
ButtonPressMask | PointerMotionMask | EnterWindowMask |
LeaveWindowMask | StructureNotifyMask | PropertyChangeMask;
XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
XSelectInput(dpy, root, wa.event_mask);
grabkeys();
focus(NULL);
}
void
seturgent(Client* c, int urg)
{
c->isurgent = urg;
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XWMHints* wmh = XGetWMHints(dpy, c->win);
if (!wmh)
return;
wmh->flags =
urg ? (wmh->flags | XUrgencyHint) : (wmh->flags & ~XUrgencyHint);
XSetWMHints(dpy, c->win, wmh);
XFree(wmh);
}
void
showhide(Client* c)
{
if (!c)
return;
if (ISVISIBLE(c)) {
/* show clients top down */
XMoveWindow(dpy, c->win, c->x, c->y);
if ((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating) &&
!c->isfullscreen)
resize(c, c->x, c->y, c->w, c->h, 0);
showhide(c->snext);
} else {
/* hide clients bottom up */
showhide(c->snext);
XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
}
}
void
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sigchld(int unused)
{
if (signal(SIGCHLD, sigchld) == SIG_ERR)
die("can't install SIGCHLD handler:");
while (0 < waitpid(-1, NULL, WNOHANG))
;
}
void
spawn(const Arg* arg)
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{
if (arg->v == dmenucmd)
dmenumon[0] = '0' + selmon->num;
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(EXIT_SUCCESS);
}
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}
void
tag(const Arg* arg)
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{
if (selmon->sel && arg->ui & TAGMASK) {
selmon->sel->tags = arg->ui & TAGMASK;
focus(NULL);
arrange(selmon);
}
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}
void
tagmon(const Arg* arg)
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{
if (!selmon->sel || !mons->next)
return;
sendmon(selmon->sel, dirtomon(arg->i));
}
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void
tile(Monitor* m)
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{
unsigned int i, n, h, mw, my, ty;
Client* c;
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for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++)
;
if (n == 0)
return;
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if (n > m->nmaster)
mw = m->nmaster ? m->ww * m->mfact : 0;
else
mw = m->ww;
for (i = my = ty = 0, c = nexttiled(m->clients); c;
c = nexttiled(c->next), i++)
if (i < m->nmaster) {
h = (m->wh - my) / (MIN(n, m->nmaster) - i);
resize(c, m->wx, m->wy + my, mw - (2 * c->bw), h - (2 * c->bw), 0);
if (my + HEIGHT(c) < m->wh)
my += HEIGHT(c);
} else {
h = (m->wh - ty) / (n - i);
resize(c,
m->wx + mw,
m->wy + ty,
m->ww - mw - (2 * c->bw),
h - (2 * c->bw),
0);
if (ty + HEIGHT(c) < m->wh)
ty += HEIGHT(c);
}
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}
void
togglebar(const Arg* arg)
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{
selmon->showbar = !selmon->showbar;
updatebarpos(selmon);
XMoveResizeWindow(
dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
arrange(selmon);
}
void
togglefloating(const Arg* arg)
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{
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if (!selmon->sel || selmon->sel->isfullscreen)
return;
selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
if (selmon->sel->isfloating)
resize(selmon->sel,
selmon->sel->x,
selmon->sel->y,
selmon->sel->w,
selmon->sel->h,
0);
arrange(selmon);
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}
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void
togglefullscr(const Arg* arg)
{
if (selmon->sel)
setfullscreen(selmon->sel, !selmon->sel->isfullscreen);
}
void
toggletag(const Arg* arg)
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{
unsigned int newtags;
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if (!selmon->sel)
return;
newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
if (newtags) {
selmon->sel->tags = newtags;
focus(NULL);
arrange(selmon);
}
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}
void
toggleview(const Arg* arg)
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{
unsigned int newtagset =
selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
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if (newtagset) {
selmon->tagset[selmon->seltags] = newtagset;
focus(NULL);
arrange(selmon);
}
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}
void
unfocus(Client* c, int setfocus)
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{
if (!c)
return;
grabbuttons(c, 0);
XSetWindowBorder(dpy, c->win, scheme[SchemeNorm][ColBorder].pixel);
if (setfocus) {
XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
}
}
void
unmanage(Client* c, int destroyed)
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{
Monitor* m = c->mon;
XWindowChanges wc;
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detach(c);
detachstack(c);
if (!destroyed) {
wc.border_width = c->oldbw;
XGrabServer(dpy); /* avoid race conditions */
XSetErrorHandler(xerrordummy);
XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
setclientstate(c, WithdrawnState);
XSync(dpy, False);
XSetErrorHandler(xerror);
XUngrabServer(dpy);
}
free(c);
focus(NULL);
updateclientlist();
arrange(m);
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}
void
unmapnotify(XEvent* e)
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{
XUnmapEvent* ev = &e->xunmap;
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Client* c = wintoclient(ev->window);
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if (c) {
if (ev->send_event)
setclientstate(c, WithdrawnState);
else
unmanage(c, 0);
}
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}
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void
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updatebars(void)
{
Monitor* m;
XSetWindowAttributes wa = { .override_redirect = True,
.background_pixmap = ParentRelative,
.event_mask = ButtonPressMask | ExposureMask };
XClassHint ch = { "dwm", "dwm" };
for (m = mons; m; m = m->next) {
if (m->barwin)
continue;
m->barwin =
XCreateWindow(dpy,
root,
m->wx,
m->by,
m->ww,
bh,
0,
DefaultDepth(dpy, screen),
CopyFromParent,
DefaultVisual(dpy, screen),
CWOverrideRedirect | CWBackPixmap | CWEventMask,
&wa);
XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
XMapRaised(dpy, m->barwin);
XSetClassHint(dpy, m->barwin, &ch);
}
}
void
updatebarpos(Monitor* m)
{
m->wy = m->my;
m->wh = m->mh;
if (m->showbar) {
m->wh -= bh;
m->by = m->topbar ? m->wy : m->wy + m->wh;
m->wy = m->topbar ? m->wy + bh : m->wy;
} else
m->by = -bh;
}
void
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updateclientlist()
{
XDeleteProperty(dpy, root, netatom[NetClientList]);
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for (Monitor* m = mons; m; m = m->next)
for (Client* c = m->clients; c; c = c->next)
XChangeProperty(dpy,
root,
netatom[NetClientList],
XA_WINDOW,
32,
PropModeAppend,
(unsigned char*)&(c->win),
1);
}
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int
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updategeom(void)
{
int dirty = 0;
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#ifdef XINERAMA
if (XineramaIsActive(dpy)) {
int i, j, n, nn;
Client* c;
Monitor* m;
XineramaScreenInfo* info = XineramaQueryScreens(dpy, &nn);
XineramaScreenInfo* unique = NULL;
for (n = 0, m = mons; m; m = m->next, n++)
;
/* only consider unique geometries as separate screens */
unique = ecalloc(nn, sizeof(XineramaScreenInfo));
for (i = 0, j = 0; i < nn; i++)
if (isuniquegeom(unique, j, &info[i]))
memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
XFree(info);
nn = j;
if (n <= nn) { /* new monitors available */
for (i = 0; i < (nn - n); i++) {
for (m = mons; m && m->next; m = m->next)
;
if (m)
m->next = createmon();
else
mons = createmon();
}
for (i = 0, m = mons; i < nn && m; m = m->next, i++)
if (i >= n || unique[i].x_org != m->mx ||
unique[i].y_org != m->my || unique[i].width != m->mw ||
unique[i].height != m->mh) {
dirty = 1;
m->num = i;
m->mx = m->wx = unique[i].x_org;
m->my = m->wy = unique[i].y_org;
m->mw = m->ww = unique[i].width;
m->mh = m->wh = unique[i].height;
updatebarpos(m);
}
} else { /* less monitors available nn < n */
for (i = nn; i < n; i++) {
for (m = mons; m && m->next; m = m->next)
;
while ((c = m->clients)) {
dirty = 1;
m->clients = c->next;
detachstack(c);
c->mon = mons;
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attachbottom(c);
attachstack(c);
}
if (m == selmon)
selmon = mons;
cleanupmon(m);
}
}
free(unique);
} else
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#endif /* XINERAMA */
{ /* default monitor setup */
if (!mons)
mons = createmon();
if (mons->mw != sw || mons->mh != sh) {
dirty = 1;
mons->mw = mons->ww = sw;
mons->mh = mons->wh = sh;
updatebarpos(mons);
}
}
if (dirty) {
selmon = mons;
selmon = wintomon(root);
}
return dirty;
}
void
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updatenumlockmask(void)
{
numlockmask = 0;
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XModifierKeymap* modmap = XGetModifierMapping(dpy);
for (register unsigned int i = 0; i < 8; i++)
for (register unsigned int j = 0; j < modmap->max_keypermod; j++)
if (modmap->modifiermap[i * modmap->max_keypermod + j] ==
XKeysymToKeycode(dpy, XK_Num_Lock))
numlockmask = (1 << i);
XFreeModifiermap(modmap);
}
void
updatesizehints(Client* c)
{
long msize;
XSizeHints size;
if (!XGetWMNormalHints(dpy, c->win, &size, &msize))
/* size is uninitialized, ensure that size.flags aren't used */
size.flags = PSize;
if (size.flags & PBaseSize) {
c->basew = size.base_width;
c->baseh = size.base_height;
} else if (size.flags & PMinSize) {
c->basew = size.min_width;
c->baseh = size.min_height;
} else
c->basew = c->baseh = 0;
if (size.flags & PResizeInc) {
c->incw = size.width_inc;
c->inch = size.height_inc;
} else
c->incw = c->inch = 0;
if (size.flags & PMaxSize) {
c->maxw = size.max_width;
c->maxh = size.max_height;
} else
c->maxw = c->maxh = 0;
if (size.flags & PMinSize) {
c->minw = size.min_width;
c->minh = size.min_height;
} else if (size.flags & PBaseSize) {
c->minw = size.base_width;
c->minh = size.base_height;
} else
c->minw = c->minh = 0;
if (size.flags & PAspect) {
c->mina = (float)size.min_aspect.y / size.min_aspect.x;
c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
} else
c->maxa = c->mina = 0.0;
c->isfixed =
(c->maxw && c->maxh && c->maxw == c->minw && c->maxh == c->minh);
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}
void
updatestatus(void)
{
if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
strcpy(stext, "dwm-" VERSION);
drawbar(selmon);
}
void
updatetitle(Client* c)
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{
if (!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
if (c->name[0] == '\0') /* hack to mark broken clients */
strcpy(c->name, broken);
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}
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void
updatewindowtype(Client* c)
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{
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if (getatomprop(c, netatom[NetWMState]) == netatom[NetWMFullscreen])
setfullscreen(c, 1);
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if (getatomprop(c, netatom[NetWMWindowType]) == netatom[NetWMWindowTypeDialog])
c->isfloating = 1;
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}
void
updatewmhints(Client* c)
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{
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XWMHints* wmh = XGetWMHints(dpy, c->win);
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if (wmh) {
if (c == selmon->sel && wmh->flags & XUrgencyHint) {
wmh->flags &= ~XUrgencyHint;
XSetWMHints(dpy, c->win, wmh);
} else
c->isurgent = (wmh->flags & XUrgencyHint) ? 1 : 0;
if (wmh->flags & InputHint)
c->neverfocus = !wmh->input;
else
c->neverfocus = 0;
XFree(wmh);
}
}
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void
view(const Arg* arg)
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{
if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
return;
selmon->seltags ^= 1; /* toggle sel tagset */
if (arg->ui & TAGMASK)
selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
focus(NULL);
arrange(selmon);
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}
Client*
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wintoclient(Window w)
{
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for (Monitor* m = mons; m; m = m->next)
for (Client* c = m->clients; c; c = c->next)
if (c->win == w)
return c;
return NULL;
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}
Monitor*
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wintomon(Window w)
{
int x, y;
Client* c;
Monitor* m;
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if (w == root && getrootptr(&x, &y))
return recttomon(x, y, 1, 1);
for (m = mons; m; m = m->next)
if (w == m->barwin)
return m;
if ((c = wintoclient(w)))
return c->mon;
return selmon;
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}
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/* 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 */
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}
int
xerrordummy(Display* dpy, XErrorEvent* ee)
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{
return 0;
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}
/* Startup Error handler to check if another window manager
* is already running. */
int
xerrorstart(Display* dpy, XErrorEvent* ee)
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{
die("dwm: another window manager is already running");
return -1;
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}
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void
zoom(const Arg* arg)
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{
Client* c = selmon->sel;
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if (!selmon->lt[selmon->sellt]->arrange ||
(selmon->sel && selmon->sel->isfloating))
return;
if (c == nexttiled(selmon->clients))
if (!c || !(c = nexttiled(c->next)))
return;
pop(c);
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}
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int
main(int argc, char* argv[])
{
if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
fputs("warning: no locale support\n", stderr);
if (!(dpy = XOpenDisplay(NULL)))
die("dwm: cannot open display");
checkotherwm();
setup();
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#ifdef __OpenBSD__
if (pledge("stdio rpath proc exec", NULL) == -1)
die("pledge");
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#endif /* __OpenBSD__ */
scan();
run();
cleanup();
XCloseDisplay(dpy);
return EXIT_SUCCESS;
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}