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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 <errno.h>
#include <locale.h>
#include <signal.h>
#include <stdarg.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/Xresource.h>
#include <X11/Xutil.h>
#ifdef XINERAMA
#include <X11/extensions/Xinerama.h>
#endif /* XINERAMA */
#include <X11/Xft/Xft.h>
#include "drw.h"
#include "util.h"
/* macros */
#define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
#define CLEANMASK(mask) (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
#define INTERSECT(x,y,w,h,m) (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
* MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
#define ISVISIBLE(C) ((C->tags & C->mon->tagset[C->mon->seltags]))
#define LENGTH(X) (sizeof X / sizeof X[0])
#define 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)
#define XRDB_LOAD_COLOR(R,V) if (XrmGetResource(xrdb, R, NULL, &type, &value) == True) { \
if (value.addr != NULL && strnlen(value.addr, 8) == 7 && value.addr[0] == '#') { \
int i = 1; \
for (; i <= 6; i++) { \
if (value.addr[i] < 48) break; \
if (value.addr[i] > 57 && value.addr[i] < 65) break; \
if (value.addr[i] > 70 && value.addr[i] < 97) break; \
if (value.addr[i] > 102) break; \
} \
if (i == 7) { \
strncpy(V, value.addr, 7); \
V[7] = '\0'; \
} \
} \
}
/* enums */
enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
enum { SchemeNorm, SchemeSel, SchemeWarn, SchemeUrgent }; /* 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, ClkTabBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
typedef union {
int i;
unsigned int ui;
float f;
const void *v;
} Arg;
typedef struct {
unsigned int click;
unsigned int mask;
unsigned int button;
void (*func)(const Arg *arg);
const Arg arg;
} Button;
typedef struct Monitor Monitor;
typedef struct Client Client;
struct Client {
char name[256];
float mina, maxa;
int x, y, w, h;
int sfx, sfy, sfw, sfh; /* stored float geometry, used on mode revert */
int oldx, oldy, oldw, oldh;
int basew, baseh, incw, inch, maxw, maxh, minw, minh;
int bw, oldbw;
unsigned int tags;
int ismax, wasfloating, 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 * sig;
void (*func)(const Arg *);
} Signal;
typedef struct {
const char *symbol;
void (*arrange)(Monitor *);
} Layout;
#define MAXTABS 50
typedef struct Pertag Pertag;
struct Monitor {
char ltsymbol[16];
float mfact;
int nmaster;
int num;
int by; /* bar geometry */
int ty; /* tab bar geometry */
int mx, my, mw, mh; /* screen size */
int wx, wy, ww, wh; /* window area */
int gappih; /* horizontal gap between windows */
int gappiv; /* vertical gap between windows */
int gappoh; /* horizontal outer gaps */
int gappov; /* vertical outer gaps */
unsigned int seltags;
unsigned int sellt;
unsigned int tagset[2];
int showbar;
int showtab;
int topbar;
int toptab;
Client *clients;
Client *sel;
Client *stack;
Monitor *next;
Window barwin;
Window tabwin;
int ntabs;
int tab_widths[MAXTABS];
const Layout *lt[2];
Pertag *pertag;
};
typedef struct {
const char *class;
const char *instance;
const char *title;
unsigned int tags;
int isfloating;
int monitor;
} Rule;
/* 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 attachstack(Client *c);
static int fake_signal(void);
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 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 drawtab(Monitor *m);
static void drawtabs(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 void focuswin(const Arg* arg);
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 loadxrdb(void);
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 setgaps(int oh, int ov, int ih, int iv);
static void incrgaps(const Arg *arg);
static void incrigaps(const Arg *arg);
static void incrogaps(const Arg *arg);
static void incrohgaps(const Arg *arg);
static void incrovgaps(const Arg *arg);
static void incrihgaps(const Arg *arg);
static void incrivgaps(const Arg *arg);
static void togglegaps(const Arg *arg);
static void defaultgaps(const Arg *arg);
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 tabmode(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 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 xrdb(const Arg *arg);
static void zoom(const Arg *arg);
static void centeredmaster(Monitor *m);
static void centeredfloatingmaster(Monitor *m);
/* variables */
static const char broken[] = "broken";
static char stext[256];
static int screen;
static int sw, sh; /* X display screen geometry width, height */
static int bh, blw = 0; /* bar geometry */
static int enablegaps = 1; /* enables gaps, used by togglegaps */
static int th = 0; /* tab bar geometry */
static int lrpad; /* sum of left and right padding for text */
static int (*xerrorxlib)(Display *, XErrorEvent *);
static unsigned int numlockmask = 0;
static void (*handler[LASTEvent]) (XEvent *) = {
[ButtonPress] = buttonpress,
[ClientMessage] = clientmessage,
[ConfigureRequest] = configurerequest,
[ConfigureNotify] = configurenotify,
[DestroyNotify] = destroynotify,
[EnterNotify] = enternotify,
[Expose] = expose,
[FocusIn] = focusin,
[KeyPress] = keypress,
[MappingNotify] = mappingnotify,
[MapRequest] = maprequest,
[MotionNotify] = motionnotify,
[PropertyNotify] = propertynotify,
[UnmapNotify] = unmapnotify
};
static Atom wmatom[WMLast], netatom[NetLast];
static int running = 1;
static Cur *cursor[CurLast];
static Clr **scheme;
static Display *dpy;
static Drw *drw;
static Monitor *mons, *selmon;
static Window root, wmcheckwin;
/* configuration, allows nested code to access above variables */
#include "config.h"
struct Pertag {
unsigned int curtag, prevtag; /* current and previous tag */
int nmasters[LENGTH(tags) + 1]; /* number of windows in master area */
float mfacts[LENGTH(tags) + 1]; /* mfacts per tag */
unsigned int sellts[LENGTH(tags) + 1]; /* selected layouts */
const Layout *ltidxs[LENGTH(tags) + 1][2]; /* matrix of tags and layouts indexes */
int showbars[LENGTH(tags) + 1]; /* display bar for the current tag */
};
/* compile-time check if all tags fit into an unsigned int bit array. */
struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
/* function implementations */
void
applyrules(Client *c)
{
const char *class, *instance;
unsigned int i;
const Rule *r;
Monitor *m;
XClassHint ch = { NULL, NULL };
/* rule matching */
c->isfloating = 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];
}
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) {
updatebarpos(m);
XMoveResizeWindow(dpy, m->tabwin, m->wx, m->ty, m->ww, th);
strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
if (m->lt[m->sellt]->arrange)
m->lt[m->sellt]->arrange(m);
}
void
attach(Client *c)
{
c->next = c->mon->clients;
c->mon->clients = c;
}
void
attachstack(Client *c)
{
c->snext = c->mon->stack;
c->mon->stack = c;
}
void
buttonpress(XEvent *e)
{
unsigned int i, x, click;
Arg arg = {0};
Client *c;
Monitor *m;
XButtonPressedEvent *ev = &e->xbutton;
click = ClkRootWin;
/* focus monitor if necessary */
if ((m = wintomon(ev->window)) && m != selmon) {
unfocus(selmon->sel, 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 - TEXTW(stext))
click = ClkStatusText;
else
click = ClkWinTitle;
}
if(ev->window == selmon->tabwin) {
i = 0; x = 0;
for(c = selmon->clients; c; c = c->next){
if(!ISVISIBLE(c)) continue;
x += selmon->tab_widths[i];
if (ev->x > x)
++i;
else
break;
if(i >= m->ntabs) break;
}
if(c) {
click = ClkTabBar;
arg.ui = i;
}
}
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 || click == ClkTabBar) && buttons[i].arg.i == 0) ? &arg : &buttons[i].arg);
}
}
void
checkotherwm(void)
{
xerrorxlib = XSetErrorHandler(xerrorstart);
/* this causes an error if some other window manager is running */
XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
XSync(dpy, False);
XSetErrorHandler(xerror);
XSync(dpy, False);
}
void
cleanup(void)
{
Arg a = {.ui = ~0};
Layout foo = { "", NULL };
Monitor *m;
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);
XUnmapWindow(dpy, mon->tabwin);
XDestroyWindow(dpy, mon->tabwin);
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 *
createmon(void)
{
Monitor *m;
unsigned int i;
m = ecalloc(1, sizeof(Monitor));
m->tagset[0] = m->tagset[1] = 1;
m->mfact = mfact;
m->nmaster = nmaster;
m->showbar = showbar;
m->showtab = showtab;
m->topbar = topbar;
m->gappih = gappih;
m->gappiv = gappiv;
m->gappoh = gappoh;
m->gappov = gappov;
m->toptab = toptab;
m->ntabs = 0;
m->lt[0] = &layouts[0];
m->lt[1] = &layouts[1 % LENGTH(layouts)];
strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
m->pertag = ecalloc(1, sizeof(Pertag));
m->pertag->curtag = m->pertag->prevtag = 1;
for (i = 0; i <= LENGTH(tags); i++) {
m->pertag->nmasters[i] = m->nmaster;
m->pertag->mfacts[i] = m->mfact;
m->pertag->ltidxs[i][0] = m->lt[0];
m->pertag->ltidxs[i][1] = m->lt[1];
m->pertag->sellts[i] = m->sellt;
m->pertag->showbars[i] = m->showbar;
}
return m;
}
void
destroynotify(XEvent *e)
{
Client *c;
XDestroyWindowEvent *ev = &e->xdestroywindow;
if ((c = wintoclient(ev->window)))
unmanage(c, 1);
}
void
detach(Client *c)
{
Client **tc;
for (tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
*tc = c->next;
}
void
detachstack(Client *c)
{
Client **tc, *t;
for (tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
*tc = c->snext;
if (c == c->mon->sel) {
for (t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
c->mon->sel = t;
}
}
Monitor *
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, sw = 0;
int boxs = drw->fonts->h / 9;
int boxw = drw->fonts->h / 6 + 2;
unsigned int i, occ = 0, urg = 0;
char *ts = stext;
char *tp = stext;
int tx = 0;
char ctmp;
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]);
sw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
while (1) {
if ((unsigned int)*ts > LENGTH(colors)) { ts++; continue ; }
ctmp = *ts;
*ts = '\0';
drw_text(drw, m->ww - sw + tx, 0, sw - tx, bh, 0, tp, 0);
tx += TEXTW(tp) -lrpad;
if (ctmp == '\0') { break; }
drw_setscheme(drw, scheme[(unsigned int)(ctmp-1)]);
*ts = ctmp;
tp = ++ts;
}
}
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 - sw - 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);
}
void
drawbars(void)
{
Monitor *m;
for (m = mons; m; m = m->next)
drawbar(m);
}
void
drawtabs(void) {
Monitor *m;
for(m = mons; m; m = m->next)
drawtab(m);
}
static int
cmpint(const void *p1, const void *p2) {
/* The actual arguments to this function are "pointers to
pointers to char", but strcmp(3) arguments are "pointers
to char", hence the following cast plus dereference */
return *((int*) p1) > * (int*) p2;
}
void
drawtab(Monitor *m) {
Client *c;
int i;
int itag = -1;
char view_info[50];
int view_info_w = 0;
int sorted_label_widths[MAXTABS];
int tot_width;
int maxsize = bh;
int x = 0;
int w = 0;
//view_info: indicate the tag which is displayed in the view
for(i = 0; i < LENGTH(tags); ++i){
if((selmon->tagset[selmon->seltags] >> i) & 1) {
if(itag >=0){ //more than one tag selected
itag = -1;
break;
}
itag = i;
}
}
if(0 <= itag && itag < LENGTH(tags)){
snprintf(view_info, sizeof view_info, "[%s]", tags[itag]);
} else {
strncpy(view_info, "[...]", sizeof view_info);
}
view_info[sizeof(view_info) - 1 ] = 0;
view_info_w = TEXTW(view_info);
tot_width = view_info_w;
/* Calculates number of labels and their width */
m->ntabs = 0;
for(c = m->clients; c; c = c->next){
if(!ISVISIBLE(c)) continue;
m->tab_widths[m->ntabs] = TEXTW(c->name);
tot_width += m->tab_widths[m->ntabs];
++m->ntabs;
if(m->ntabs >= MAXTABS) break;
}
if(tot_width > m->ww){ //not enough space to display the labels, they need to be truncated
memcpy(sorted_label_widths, m->tab_widths, sizeof(int) * m->ntabs);
qsort(sorted_label_widths, m->ntabs, sizeof(int), cmpint);
tot_width = view_info_w;
for(i = 0; i < m->ntabs; ++i){
if(tot_width + (m->ntabs - i) * sorted_label_widths[i] > m->ww)
break;
tot_width += sorted_label_widths[i];
}
maxsize = (m->ww - tot_width) / (m->ntabs - i);
} else{
maxsize = m->ww;
}
i = 0;
for(c = m->clients; c; c = c->next){
if(!ISVISIBLE(c)) continue;
if(i >= m->ntabs) break;
if(m->tab_widths[i] > maxsize) m->tab_widths[i] = maxsize;
w = m->tab_widths[i];
drw_setscheme(drw, scheme[(c == m->sel) ? SchemeSel : SchemeNorm]);
drw_text(drw, x, 0, w, th, 0, c->name, 0);
x += w;
++i;
}
drw_setscheme(drw, scheme[SchemeNorm]);
/* cleans interspace between window names and current viewed tag label */
w = m->ww - view_info_w - x;
drw_text(drw, x, 0, w, th, 0, "", 0);
/* view info */
x += w;
w = view_info_w;
drw_text(drw, x, 0, w, th, 0, view_info, 0);
drw_map(drw, m->tabwin, 0, 0, m->ww, th);
}
void
enternotify(XEvent *e)
{
Client *c;
Monitor *m;
XCrossingEvent *ev = &e->xcrossing;
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);
}
void
expose(XEvent *e)
{
Monitor *m;
XExposeEvent *ev = &e->xexpose;