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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/Xutil.h>
#ifdef XINERAMA
#include <X11/extensions/Xinerama.h>
#endif /* XINERAMA */
#include <X11/Xft/Xft.h>
#include "drw.h"
#include "util.h"
/* macros */
#define Button6 6
#define Button7 7
#define Button8 8
#define Button9 9
#define NUMTAGS 9
#define NUMVIEWHIST NUMTAGS
#define BARRULES 20
#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 WTYPE "_NET_WM_WINDOW_TYPE_"
#define TAGMASK ((1 << NUMTAGS) - 1)
#define TEXTWM(X) (drw_fontset_getwidth(drw, (X), True) + lrpad)
#define TEXTW(X) (drw_fontset_getwidth(drw, (X), False) + lrpad)
#define HIDDEN(C) ((getstate(C->win) == IconicState))
/* enums */
enum {
CurResizeBR,
CurResizeBL,
CurResizeTR,
CurResizeTL,
CurNormal,
CurResize,
CurMove,
CurLast
}; /* cursor */
enum {
SchemeNorm,
SchemeSel,
SchemeTitleNorm,
SchemeTitleSel,
SchemeTagsNorm,
SchemeTagsSel,
SchemeHidNorm,
SchemeHidSel,
SchemeUrg,
}; /* color schemes */
enum {
NetSupported, NetWMName, NetWMState, NetWMCheck,
NetWMFullscreen, NetActiveWindow, NetWMWindowType,
NetWMIcon,
NetSystemTray, NetSystemTrayOP, NetSystemTrayOrientation,
NetSystemTrayVisual, NetWMWindowTypeDock, NetSystemTrayOrientationHorz,
NetClientList,
NetLast
}; /* EWMH atoms */
enum {
WMProtocols,
WMDelete,
WMState,
WMTakeFocus,
WMLast
}; /* default atoms */
enum {
ClkTagBar,
ClkLtSymbol,
ClkStatusText,
ClkWinTitle,
ClkClientWin,
ClkRootWin,
ClkLast
}; /* clicks */
enum {
BAR_ALIGN_LEFT,
BAR_ALIGN_CENTER,
BAR_ALIGN_RIGHT,
BAR_ALIGN_LEFT_LEFT,
BAR_ALIGN_LEFT_RIGHT,
BAR_ALIGN_LEFT_CENTER,
BAR_ALIGN_NONE,
BAR_ALIGN_RIGHT_LEFT,
BAR_ALIGN_RIGHT_RIGHT,
BAR_ALIGN_RIGHT_CENTER,
BAR_ALIGN_LAST
}; /* bar alignment */
typedef union {
int i;
unsigned int ui;
float f;
const void *v;
} Arg;
typedef struct Monitor Monitor;
typedef struct Bar Bar;
struct Bar {
Window win;
Monitor *mon;
Bar *next;
int idx;
int showbar;
int topbar;
int external;
int borderpx;
int borderscheme;
int bx, by, bw, bh; /* bar geometry */
int w[BARRULES]; // width, array length == barrules, then use r index for lookup purposes
int x[BARRULES]; // x position, array length == ^
};
typedef struct {
int x;
int y;
int h;
int w;
} BarArg;
typedef struct {
int monitor;
int bar;
int alignment; // see bar alignment enum
int (*widthfunc)(Bar *bar, BarArg *a);
int (*drawfunc)(Bar *bar, BarArg *a);
int (*clickfunc)(Bar *bar, Arg *arg, BarArg *a);
int (*hoverfunc)(Bar *bar, BarArg *a, XMotionEvent *ev);
char *name; // for debugging
int x, w; // position, width for internal use
} BarRule;
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 oldx, oldy, oldw, oldh;
int basew, baseh, incw, inch, maxw, maxh, minw, minh, hintsvalid;
int bw, oldbw;
unsigned int tags;
int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
int beingmoved;
int isterminal, noswallow;
pid_t pid;
Client *next;
Client *snext;
Client *swallowing;
Monitor *mon;
Window win;
unsigned int icw, ich;
Picture icon;
};
typedef struct {
unsigned int mod;
KeySym keysym;
void (*func)(const Arg *);
const Arg arg;
} Key;
typedef struct {
const char *symbol;
void (*arrange)(Monitor *);
} Layout;
typedef struct Pertag Pertag;
struct Monitor {
char ltsymbol[16];
float mfact;
int nmaster;
int num;
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;
Client *clients;
Client *sel;
Client *stack;
Monitor *next;
Bar *bar;
const Layout *lt[2];
Pertag *pertag;
char taglabel[NUMTAGS][64];
};
typedef struct {
const char *class;
const char *instance;
const char *title;
const char *wintype;
unsigned int tags;
int isfloating;
int isterminal;
int noswallow;
int monitor;
} Rule;
#define RULE(...) { .monitor = -1, __VA_ARGS__ },
/* Cross patch compatibility rule macro helper macros */
#define FLOATING , .isfloating = 1
#define CENTERED
#define PERMANENT
#define FAKEFULLSCREEN
#define NOSWALLOW , .noswallow = 1
#define TERMINAL , .isterminal = 1
#define SWITCHTAG
/* 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 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 drawbarwin(Bar *bar);
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, Atom req);
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 motionnotify(XEvent *e);
static void movemouse(const Arg *arg);
static Client *nexttiled(Client *c);
static void pop(Client *c);
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(Window w, Atom proto, int m, long d0, long d1, long d2, long d3, long d4);
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 spawn(const Arg *arg);
static void tag(const Arg *arg);
static void tagmon(const Arg *arg);
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, Client *nextfocus);
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 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);
/* bar functions */
#include "patch/include.h"
/* variables */
static const char broken[] = "broken";
static char stext[512];
static int screen;
static int sw, sh; /* X display screen geometry width, height */
static int bh; /* bar geometry */
static int lrpad; /* sum of left and right padding for text */
/* Some clients (e.g. alacritty) helpfully send configure requests with a new size or position
* when they detect that they have been moved to another monitor. This can cause visual glitches
* when moving (or resizing) client windows from one monitor to another. This variable is used
* internally to ignore such configure requests while movemouse or resizemouse are being used. */
static int ignoreconfigurerequests = 0;
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,
[ResizeRequest] = resizerequest,
[UnmapNotify] = unmapnotify
};
static Atom wmatom[WMLast], netatom[NetLast];
static Atom xatom[XLast];
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"
#include "patch/include.c"
/* compile-time check if all tags fit into an unsigned int bit array. */
struct NumTags { char limitexceeded[NUMTAGS > 31 ? -1 : 1]; };
/* function implementations */
void
applyrules(Client *c)
{
const char *class, *instance;
Atom wintype;
unsigned int i;
const Rule *r;
Monitor *m;
XClassHint ch = { NULL, NULL };
/* rule matching */
c->noswallow = -1;
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;
wintype = getatomprop(c, netatom[NetWMWindowType], XA_ATOM);
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))
&& (!r->wintype || wintype == XInternAtom(dpy, r->wintype, False)))
{
c->isterminal = r->isterminal;
c->noswallow = r->noswallow;
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) {
if (!c->hintsvalid)
updatesizehints(c);
/* 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;
}
void
attachstack(Client *c)
{
c->snext = c->mon->stack;
c->mon->stack = c;
}
void
buttonpress(XEvent *e)
{
int click, i, r;
Arg arg = {0};
Client *c;
Monitor *m;
Bar *bar;
XButtonPressedEvent *ev = &e->xbutton;
const BarRule *br;
BarArg carg = { 0, 0, 0, 0 };
click = ClkRootWin;
/* focus monitor if necessary */
if ((m = wintomon(ev->window)) && m != selmon
) {
unfocus(selmon->sel, 1, NULL);
selmon = m;
focus(NULL);
}
for (bar = selmon->bar; bar; bar = bar->next) {
if (ev->window == bar->win) {
for (r = 0; r < LENGTH(barrules); r++) {
br = &barrules[r];
if (br->bar != bar->idx || (br->monitor == 'A' && m != selmon) || br->clickfunc == NULL)
continue;
if (br->monitor != 'A' && br->monitor != -1 && br->monitor != bar->mon->num)
continue;
if (bar->x[r] <= ev->x && ev->x <= bar->x[r] + bar->w[r]) {
carg.x = ev->x - bar->x[r];
carg.y = ev->y - bar->borderpx;
carg.w = bar->w[r];
carg.h = bar->bh - 2 * bar->borderpx;
click = br->clickfunc(bar, &arg, &carg);
if (click < 0)
return;
break;
}
}
break;
}
}
if (click == ClkRootWin && (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
);
}
}
}
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)
{
Monitor *m;
Layout foo = { "", NULL };
size_t i;
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);
if (showsystray && systray) {
while (systray->icons)
removesystrayicon(systray->icons);
if (systray->win) {
XUnmapWindow(dpy, systray->win);
XDestroyWindow(dpy, systray->win);
}
free(systray);
}
for (i = 0; i < CurLast; i++)
drw_cur_free(drw, cursor[i]);
for (i = 0; i < LENGTH(colors); i++)
free(scheme[i]);
free(scheme);
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;
Bar *bar;
if (mon == mons)
mons = mons->next;
else {
for (m = mons; m && m->next != mon; m = m->next);
m->next = mon->next;
}
for (bar = mon->bar; bar; bar = mon->bar) {
if (!bar->external) {
XUnmapWindow(dpy, bar->win);
XDestroyWindow(dpy, bar->win);
}
mon->bar = bar->next;
if (systray && bar == systray->bar)
systray->bar = NULL;
free(bar);
}
free(mon->pertag);
free(mon);
}
void
clientmessage(XEvent *e)
{
XWindowAttributes wa;
XSetWindowAttributes swa;
XClientMessageEvent *cme = &e->xclient;
Client *c = wintoclient(cme->window);
if (showsystray && systray && cme->window == systray->win && cme->message_type == netatom[NetSystemTrayOP]) {
/* add systray icons */
if (cme->data.l[1] == SYSTEM_TRAY_REQUEST_DOCK) {
if (!(c = (Client *)calloc(1, sizeof(Client))))
die("fatal: could not malloc() %u bytes\n", sizeof(Client));
if (!(c->win = cme->data.l[2])) {
free(c);
return;
}
c->mon = selmon;
c->next = systray->icons;
systray->icons = c;
XGetWindowAttributes(dpy, c->win, &wa);
c->x = c->oldx = c->y = c->oldy = 0;
c->w = c->oldw = wa.width;
c->h = c->oldh = wa.height;
c->oldbw = wa.border_width;
c->bw = 0;
c->isfloating = True;
/* reuse tags field as mapped status */
c->tags = 1;
updatesizehints(c);
updatesystrayicongeom(c, wa.width, wa.height);
XAddToSaveSet(dpy, c->win);
XSelectInput(dpy, c->win, StructureNotifyMask | PropertyChangeMask | ResizeRedirectMask);
XClassHint ch = {"dwmsystray", "dwmsystray"};
XSetClassHint(dpy, c->win, &ch);
XReparentWindow(dpy, c->win, systray->win, 0, 0);
/* use parents background color */
swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
XChangeWindowAttributes(dpy, c->win, CWBackPixel, &swa);
sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_EMBEDDED_NOTIFY, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
XSync(dpy, False);
setclientstate(c, NormalState);
}
return;
}
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 */
)));
}
} 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;
Bar *bar;
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, sh);
updatebars();
for (m = mons; m; m = m->next) {
for (bar = m->bar; bar; bar = bar->next)
XMoveResizeWindow(dpy, bar->win, bar->bx, bar->by, bar->bw, bar->bh);
}
arrange(NULL);
focus(NULL);
}
}
}
void
configurerequest(XEvent *e)
{
Client *c;
Monitor *m;
XConfigureRequestEvent *ev = &e->xconfigurerequest;
XWindowChanges wc;
if (ignoreconfigurerequests)
return;
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, *mon;
int i, n, mi, max_bars = 2, istopbar = topbar;
const BarRule *br;
Bar *bar;
m = ecalloc(1, sizeof(Monitor));
m->tagset[0] = m->tagset[1] = 1;
m->mfact = mfact;
m->nmaster = nmaster;
m->showbar = showbar;
m->gappih = gappih;
m->gappiv = gappiv;
m->gappoh = gappoh;
m->gappov = gappov;
for (mi = 0, mon = mons; mon; mon = mon->next, mi++); // monitor index
m->num = mi;
m->lt[0] = &layouts[0];
m->lt[1] = &layouts[1 % LENGTH(layouts)];
strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
/* Derive the number of bars for this monitor based on bar rules */
for (n = -1, i = 0; i < LENGTH(barrules); i++) {
br = &barrules[i];
if (br->monitor == 'A' || br->monitor == -1 || br->monitor == m->num)
n = MAX(br->bar, n);
}
m->bar = NULL;
for (i = 0; i <= n && i < max_bars; i++) {
bar = ecalloc(1, sizeof(Bar));
bar->mon = m;
bar->idx = i;
bar->next = m->bar;
bar->topbar = istopbar;
m->bar = bar;
istopbar = !istopbar;
bar->showbar = 1;
bar->external = 0;
bar->borderpx = 0;
bar->bh = bh + bar->borderpx * 2;
bar->borderscheme = SchemeNorm;
}
if (!(m->pertag = (Pertag *)calloc(1, sizeof(Pertag))))
die("fatal: could not malloc() %u bytes\n", sizeof(Pertag));
m->pertag->curtag = 1;
for (i = 0; i <= NUMTAGS; i++) {
/* init nmaster */
m->pertag->nmasters[i] = m->nmaster;
/* init mfacts */
m->pertag->mfacts[i] = m->mfact;
/* init showbar */
m->pertag->showbars[i] = m->showbar;
/* init layouts */
m->pertag->ltidxs[i][0] = m->lt[0];
m->pertag->ltidxs[i][1] = m->lt[1];
m->pertag->sellts[i] = m->sellt;
m->pertag->enablegaps[i] = 1;
m->pertag->gaps[i] =
((gappoh & 0xFF) << 0) | ((gappov & 0xFF) << 8) | ((gappih & 0xFF) << 16) | ((gappiv & 0xFF) << 24);
}
return m;
}
void
destroynotify(XEvent *e)
{
Client *c;
XDestroyWindowEvent *ev = &e->xdestroywindow;
if ((c = wintoclient(ev->window)))
unmanage(c, 1);
else if ((c = swallowingclient(ev->window)))
unmanage(c->swallowing, 1);
else if (showsystray && (c = wintosystrayicon(ev->window))) {
removesystrayicon(c);
drawbarwin(systray->bar);
}
}
void
detach(Client *c)
{
Client **tc;
for (tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
*tc = c->next;
c->next = NULL;
}
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;
}
c->snext = NULL;
}
Monitor *
dirtomon(int dir)
{
Monitor *m = NULL;
if (dir > 0) {