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.
*
* Calls to fetch an X event from the event queue are blocking. Due reading
* status text from standard input, a select()-driven main loop has been
* implemented which selects for reads on the X connection and STDIN_FILENO to
* handle all data smoothly. The event handlers of dwm are organized in an
* array which is accessed whenever a new event has been fetched. This allows
* event dispatching in O(1) time.
*
* Each child of the root window is called a client, except windows which have
* set the override_redirect flag. Clients are organized in a global
* doubly-linked client list, the focus history is remembered through a global
* stack list. Each client contains a bit array to indicate the tags of a
* client.
*
* Keys and tagging rules are organized as arrays and defined in config.h.
*
* To understand everything else, start reading main().
*/
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#include <errno.h>
#include <locale.h>
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#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/select.h>
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#include <sys/types.h>
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#include <sys/wait.h>
#include <X11/cursorfont.h>
#include <X11/keysym.h>
#include <X11/Xatom.h>
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#include <X11/Xlib.h>
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#include <X11/Xproto.h>
#include <X11/Xutil.h>
#ifdef XINERAMA
#include <X11/extensions/Xinerama.h>
#endif
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/* macros */
#define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
#define CLEANMASK(mask) (mask & ~(numlockmask|LockMask))
#define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
#define ISVISIBLE(x) (x->tags & tagset[seltags])
#define LENGTH(x) (sizeof x / sizeof x[0])
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAXTAGLEN 16
#define MOUSEMASK (BUTTONMASK|PointerMotionMask)
#define NOBORDER(x) ((x) - 2 * c->bw)
#define TAGMASK ((int)((1LL << LENGTH(tags)) - 1))
#define TEXTW(x) (textnw(x, strlen(x)) + dc.font.height)
/* enums */
enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
enum { ColBorder, ColFG, ColBG, ColLast }; /* color */
enum { NetSupported, NetWMName, NetLast }; /* EWMH atoms */
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enum { WMProtocols, WMDelete, WMState, WMLast }; /* default atoms */
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enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
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ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
typedef union {
int i;
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unsigned int ui;
float f;
void *v;
} Arg;
typedef struct {
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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];
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float mina, maxa;
int x, y, w, h;
int basew, baseh, incw, inch, maxw, maxh, minw, minh;
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int bw, oldbw;
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unsigned int tags;
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Bool isfixed, isfloating, isurgent;
Client *next;
Client *snext;
Window win;
};
typedef struct {
int x, y, w, h;
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unsigned long norm[ColLast];
unsigned long sel[ColLast];
Drawable drawable;
GC gc;
struct {
int ascent;
int descent;
int height;
XFontSet set;
XFontStruct *xfont;
} font;
} DC; /* draw context */
typedef struct {
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unsigned int mod;
KeySym keysym;
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void (*func)(const Arg *);
const Arg arg;
} Key;
typedef struct {
const char *symbol;
void (*arrange)(void);
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} Layout;
typedef struct {
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const char *class;
const char *instance;
const char *title;
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unsigned int tags;
Bool isfloating;
} Rule;
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/* function declarations */
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static void applyrules(Client *c);
static void arrange(void);
static void attach(Client *c);
static void attachstack(Client *c);
static void buttonpress(XEvent *e);
static void checkotherwm(void);
static void cleanup(void);
static void clearurgent(void);
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static void configure(Client *c);
static void configurenotify(XEvent *e);
static void configurerequest(XEvent *e);
static void destroynotify(XEvent *e);
static void detach(Client *c);
static void detachstack(Client *c);
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static void die(const char *errstr, ...);
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static void drawbar(void);
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static void drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]);
static void drawtext(const char *text, unsigned long col[ColLast], Bool invert);
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static void enternotify(XEvent *e);
static void expose(XEvent *e);
static void focus(Client *c);
static void focusin(XEvent *e);
static void focusstack(const Arg *arg);
static Client *getclient(Window w);
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static unsigned long getcolor(const char *colstr);
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static long getstate(Window w);
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static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
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static void grabbuttons(Client *c, Bool focused);
static void grabkeys(void);
static void initfont(const char *fontstr);
static Bool isprotodel(Client *c);
static void keypress(XEvent *e);
static void killclient(const Arg *arg);
static void manage(Window w, XWindowAttributes *wa);
static void mappingnotify(XEvent *e);
static void maprequest(XEvent *e);
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static void monocle(void);
static void movemouse(const Arg *arg);
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static Client *nexttiled(Client *c);
static void propertynotify(XEvent *e);
static void quit(const Arg *arg);
static void resize(Client *c, int x, int y, int w, int h, Bool sizehints);
static void resizemouse(const Arg *arg);
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static void restack(void);
static void run(void);
static void scan(void);
static void setclientstate(Client *c, long state);
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static void setlayout(const Arg *arg);
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static void setmfact(const Arg *arg);
static void setup(void);
static void spawn(const Arg *arg);
static void tag(const Arg *arg);
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static int textnw(const char *text, unsigned int len);
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static void tile(void);
static void togglebar(const Arg *arg);
static void togglefloating(const Arg *arg);
static void toggletag(const Arg *arg);
static void toggleview(const Arg *arg);
static void unmanage(Client *c);
static void unmapnotify(XEvent *e);
static void updatebar(void);
static void updategeom(void);
static void updatenumlockmask(void);
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static void updatesizehints(Client *c);
static void updatetitle(Client *c);
static void updatewmhints(Client *c);
static void view(const Arg *arg);
static int xerror(Display *dpy, XErrorEvent *ee);
static int xerrordummy(Display *dpy, XErrorEvent *ee);
static int xerrorstart(Display *dpy, XErrorEvent *ee);
static void zoom(const Arg *arg);
/* variables */
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static char stext[256];
static int screen;
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static int sx, sy, sw, sh; /* X display screen geometry x, y, width, height */
static int by, bh, blw; /* bar geometry y, height and layout symbol width */
static int wx, wy, ww, wh; /* window area geometry x, y, width, height, bar excluded */
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static unsigned int seltags = 0, sellt = 0;
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static int (*xerrorxlib)(Display *, XErrorEvent *);
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static unsigned int numlockmask = 0;
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static void (*handler[LASTEvent]) (XEvent *) = {
[ButtonPress] = buttonpress,
[ConfigureRequest] = configurerequest,
[ConfigureNotify] = configurenotify,
[DestroyNotify] = destroynotify,
[EnterNotify] = enternotify,
[Expose] = expose,
[FocusIn] = focusin,
[KeyPress] = keypress,
[MappingNotify] = mappingnotify,
[MapRequest] = maprequest,
[PropertyNotify] = propertynotify,
[UnmapNotify] = unmapnotify
};
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static Atom wmatom[WMLast], netatom[NetLast];
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static Bool otherwm;
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static Bool running = True;
static Client *clients = NULL;
static Client *sel = NULL;
static Client *stack = NULL;
static Cursor cursor[CurLast];
static Display *dpy;
static DC dc;
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static Layout *lt[] = { NULL, NULL };
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static Window root, barwin;
/* 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[sizeof(unsigned int) * 8 < LENGTH(tags) ? -1 : 1]; };
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/* function implementations */
void
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applyrules(Client *c) {
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unsigned int i;
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Rule *r;
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XClassHint ch = { 0 };
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/* rule matching */
if(XGetClassHint(dpy, c->win, &ch) == 0)
return;
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for(i = 0; i < LENGTH(rules); i++) {
r = &rules[i];
if((!r->title || strstr(c->name, r->title))
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&& (!r->class || (ch.res_class && strstr(ch.res_class, r->class)))
&& (!r->instance || (ch.res_name && strstr(ch.res_name, r->instance)))) {
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c->isfloating = r->isfloating;
c->tags |= r->tags & TAGMASK;
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}
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}
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if(ch.res_class)
XFree(ch.res_class);
if(ch.res_name)
XFree(ch.res_name);
if(!c->tags)
c->tags = tagset[seltags];
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}
void
arrange(void) {
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Client *c;
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for(c = clients; c; c = c->next)
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if(ISVISIBLE(c)) {
XMoveWindow(dpy, c->win, c->x, c->y);
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if(!lt[sellt]->arrange || c->isfloating)
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resize(c, c->x, c->y, c->w, c->h, True);
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}
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else {
XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
}
focus(NULL);
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if(lt[sellt]->arrange)
lt[sellt]->arrange();
restack();
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}
void
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attach(Client *c) {
c->next = clients;
clients = c;
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}
void
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attachstack(Client *c) {
c->snext = stack;
stack = c;
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}
void
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buttonpress(XEvent *e) {
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unsigned int i, x, click;
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Arg arg = {0};
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Client *c;
XButtonPressedEvent *ev = &e->xbutton;
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click = ClkRootWin;
if(ev->window == barwin) {
i = x = 0;
do x += TEXTW(tags[i]); while(ev->x >= x && ++i < LENGTH(tags));
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if(i < LENGTH(tags)) {
click = ClkTagBar;
arg.ui = 1 << i;
}
else if(ev->x < x + blw)
click = ClkLtSymbol;
else if(ev->x > wx + ww - TEXTW(stext))
click = ClkStatusText;
else
click = ClkWinTitle;
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}
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else if((c = getclient(ev->window))) {
focus(c);
click = ClkClientWin;
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}
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))
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buttons[i].func(click == ClkTagBar ? &arg : &buttons[i].arg);
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}
void
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checkotherwm(void) {
otherwm = False;
XSetErrorHandler(xerrorstart);
/* this causes an error if some other window manager is running */
XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
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XSync(dpy, False);
if(otherwm)
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die("dwm: another window manager is already running\n");
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XSetErrorHandler(NULL);
xerrorxlib = XSetErrorHandler(xerror);
XSync(dpy, False);
}
void
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cleanup(void) {
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Arg a = {.ui = ~0};
Layout foo = { "", NULL };
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close(STDIN_FILENO);
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view(&a);
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lt[sellt] = &foo;
while(stack)
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unmanage(stack);
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if(dc.font.set)
XFreeFontSet(dpy, dc.font.set);
else
XFreeFont(dpy, dc.font.xfont);
XUngrabKey(dpy, AnyKey, AnyModifier, root);
XFreePixmap(dpy, dc.drawable);
XFreeGC(dpy, dc.gc);
XFreeCursor(dpy, cursor[CurNormal]);
XFreeCursor(dpy, cursor[CurResize]);
XFreeCursor(dpy, cursor[CurMove]);
XDestroyWindow(dpy, barwin);
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XSync(dpy, False);
XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
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}
void
clearurgent(void) {
XWMHints *wmh;
Client *c;
for(c = clients; c; c = c->next)
if(ISVISIBLE(c) && c->isurgent) {
c->isurgent = False;
if (!(wmh = XGetWMHints(dpy, c->win)))
continue;
wmh->flags &= ~XUrgencyHint;
XSetWMHints(dpy, c->win, wmh);
XFree(wmh);
}
}
void
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configure(Client *c) {
XConfigureEvent ce;
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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;
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ce.above = None;
ce.override_redirect = False;
XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
}
void
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configurenotify(XEvent *e) {
XConfigureEvent *ev = &e->xconfigure;
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if(ev->window == root && (ev->width != sw || ev->height != sh)) {
sw = ev->width;
sh = ev->height;
updategeom();
updatebar();
arrange();
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}
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}
void
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configurerequest(XEvent *e) {
Client *c;
XConfigureRequestEvent *ev = &e->xconfigurerequest;
XWindowChanges wc;
if((c = getclient(ev->window))) {
if(ev->value_mask & CWBorderWidth)
c->bw = ev->border_width;
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else if(c->isfloating || !lt[sellt]->arrange) {
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if(ev->value_mask & CWX)
c->x = sx + ev->x;
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if(ev->value_mask & CWY)
c->y = sy + ev->y;
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if(ev->value_mask & CWWidth)
c->w = ev->width;
if(ev->value_mask & CWHeight)
c->h = ev->height;
if((c->x - sx + c->w) > sw && c->isfloating)
c->x = sx + (sw / 2 - c->w / 2); /* center in x direction */
if((c->y - sy + c->h) > sh && c->isfloating)
c->y = sy + (sh / 2 - c->h / 2); /* center in y direction */
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if((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
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configure(c);
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if(ISVISIBLE(c))
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XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
}
else
configure(c);
}
else {
wc.x = ev->x;
wc.y = ev->y;
wc.width = ev->width;
wc.height = ev->height;
wc.border_width = ev->border_width;
wc.sibling = ev->above;
wc.stack_mode = ev->detail;
XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
}
XSync(dpy, False);
}
void
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destroynotify(XEvent *e) {
Client *c;
XDestroyWindowEvent *ev = &e->xdestroywindow;
if((c = getclient(ev->window)))
unmanage(c);
}
void
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detach(Client *c) {
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Client **tc;
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for(tc = &clients; *tc && *tc != c; tc = &(*tc)->next);
*tc = c->next;
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}
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void
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detachstack(Client *c) {
Client **tc;
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for(tc = &stack; *tc && *tc != c; tc = &(*tc)->snext);
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*tc = c->snext;
}
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void
die(const char *errstr, ...) {
va_list ap;
va_start(ap, errstr);
vfprintf(stderr, errstr, ap);
va_end(ap);
exit(EXIT_FAILURE);
}
void
drawbar(void) {
int x;
unsigned int i, occ = 0, urg = 0;
unsigned long *col;
Client *c;
for(c = clients; c; c = c->next) {
occ |= c->tags;
if(c->isurgent)
urg |= c->tags;
}
dc.x = 0;
for(i = 0; i < LENGTH(tags); i++) {
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dc.w = TEXTW(tags[i]);
col = tagset[seltags] & 1 << i ? dc.sel : dc.norm;
drawtext(tags[i], col, urg & 1 << i);
drawsquare(sel && sel->tags & 1 << i, occ & 1 << i, urg & 1 << i, col);
dc.x += dc.w;
}
if(blw > 0) {
dc.w = blw;
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drawtext(lt[sellt]->symbol, dc.norm, False);
x = dc.x + dc.w;
}
else
x = dc.x;
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dc.w = TEXTW(stext);
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dc.x = ww - dc.w;
if(dc.x < x) {
dc.x = x;
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dc.w = ww - x;
}
drawtext(stext, dc.norm, False);
if((dc.w = dc.x - x) > bh) {
dc.x = x;
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if(sel) {
drawtext(sel->name, dc.sel, False);
drawsquare(sel->isfixed, sel->isfloating, False, dc.sel);
}
else
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drawtext(NULL, dc.norm, False);
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}
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XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, ww, bh, 0, 0);
XSync(dpy, False);
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}
void
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drawsquare(Bool filled, Bool empty, Bool invert, unsigned long col[ColLast]) {
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int x;
XGCValues gcv;
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XRectangle r = { dc.x, dc.y, dc.w, dc.h };
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gcv.foreground = col[invert ? ColBG : ColFG];
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XChangeGC(dpy, dc.gc, GCForeground, &gcv);
x = (dc.font.ascent + dc.font.descent + 2) / 4;
r.x = dc.x + 1;
r.y = dc.y + 1;
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if(filled) {
r.width = r.height = x + 1;
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XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
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}
else if(empty) {
r.width = r.height = x;
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XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
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}
}
void
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drawtext(const char *text, unsigned long col[ColLast], Bool invert) {
char buf[256];
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int i, x, y, h, len, olen;
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XRectangle r = { dc.x, dc.y, dc.w, dc.h };
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XSetForeground(dpy, dc.gc, col[invert ? ColFG : ColBG]);
XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
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if(!text)
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return;
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olen = strlen(text);
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h = dc.font.ascent + dc.font.descent;
y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
x = dc.x + (h / 2);
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/* shorten text if necessary */
for(len = MIN(olen, sizeof buf); len && textnw(text, len) > dc.w - h; len--);
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if(!len)
return;
memcpy(buf, text, len);
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if(len < olen)
for(i = len; i && i > len - 3; buf[--i] = '.');
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XSetForeground(dpy, dc.gc, col[invert ? ColBG : ColFG]);
if(dc.font.set)
XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
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else
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XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
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}
void
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enternotify(XEvent *e) {
Client *c;
XCrossingEvent *ev = &e->xcrossing;
if((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
return;
if((c = getclient(ev->window)))
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focus(c);
else
focus(NULL);
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}
void
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expose(XEvent *e) {
XExposeEvent *ev = &e->xexpose;
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if(ev->count == 0 && (ev->window == barwin))
drawbar();
}
void
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focus(Client *c) {
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if(!c || !ISVISIBLE(c))
for(c = stack; c && !ISVISIBLE(c); c = c->snext);
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if(sel && sel != c) {
grabbuttons(sel, False);
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XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
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}
if(c) {
detachstack(c);
attachstack(c);
grabbuttons(c, True);
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XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
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XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
}
else
XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
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sel = c;
drawbar();
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}
void
focusin(XEvent *e) { /* there are some broken focus acquiring clients */
XFocusChangeEvent *ev = &e->xfocus;
if(sel && ev->window != sel->win)
XSetInputFocus(dpy, sel->win, RevertToPointerRoot, CurrentTime);
}
void
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focusstack(const Arg *arg) {
Client *c = NULL, *i;
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if(!sel)
return;
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if (arg->i > 0) {
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for(c = sel->next; c && !ISVISIBLE(c); c = c->next);
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if(!c)
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for(c = clients; c && !ISVISIBLE(c); c = c->next);
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}
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else {
for(i = clients; i != sel; i = i->next)
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if(ISVISIBLE(i))
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c = i;
if(!c)
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for(; i; i = i->next)
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if(ISVISIBLE(i))
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c = i;
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}
if(c) {
focus(c);
restack();
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}
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}
Client *
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getclient(Window w) {
Client *c;
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for(c = clients; c && c->win != w; c = c->next);
return c;
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}
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unsigned long
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getcolor(const char *colstr) {
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Colormap cmap = DefaultColormap(dpy, screen);
XColor color;
if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
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die("error, cannot allocate color '%s'\n", colstr);
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return color.pixel;
}
long
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getstate(Window w) {
int format, status;
long result = -1;
unsigned char *p = NULL;
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unsigned long n, extra;
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Atom real;
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status = XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
&real, &format, &n, &extra, (unsigned char **)&p);
if(status != Success)
return -1;
if(n != 0)
result = *p;
XFree(p);
return result;
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}
Bool
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gettextprop(Window w, Atom atom, char *text, unsigned int size) {
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char **list = NULL;
int n;
XTextProperty name;
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if(!text || size == 0)
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return False;
text[0] = '\0';
XGetTextProperty(dpy, w, &name, atom);
if(!name.nitems)
return False;
if(name.encoding == XA_STRING)
strncpy(text, (char *)name.value, size - 1);
else {
if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
&& n > 0 && *list) {
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strncpy(text, *list, size - 1);
XFreeStringList(list);
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}
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}
text[size - 1] = '\0';
XFree(name.value);
return True;
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}
void
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grabbuttons(Client *c, Bool focused) {
updatenumlockmask();
{
unsigned int i, j;
unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
if(focused) {
for(i = 0; i < LENGTH(buttons); i++)
if(buttons[i].click == ClkClientWin)
for(j = 0; j < LENGTH(modifiers); j++)
XGrabButton(dpy, buttons[i].button, buttons[i].mask | modifiers[j], c->win, False, BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
} else
XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
BUTTONMASK, GrabModeAsync, GrabModeSync, None, None);
}
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}
void
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grabkeys(void) {
updatenumlockmask();
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{ /* grab keys */
unsigned int i, j;
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unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
KeyCode code;
XUngrabKey(dpy, AnyKey, AnyModifier, root);
for(i = 0; i < LENGTH(keys); i++) {
code = XKeysymToKeycode(dpy, keys[i].keysym);
for(j = 0; j < LENGTH(modifiers); j++)
XGrabKey(dpy, code, keys[i].mod | modifiers[j], root, True,
GrabModeAsync, GrabModeAsync);
}
}
}
void
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initfont(const char *fontstr) {
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char *def, **missing;
int i, n;
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missing = NULL;
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dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
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if(missing) {
while(n--)
fprintf(stderr, "dwm: missing fontset: %s\n", missing[n]);
XFreeStringList(missing);
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}
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if(dc.font.set) {
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XFontSetExtents *font_extents;
XFontStruct **xfonts;
char **font_names;
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dc.font.ascent = dc.font.descent = 0;
font_extents = XExtentsOfFontSet(dc.font.set);
n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
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dc.font.ascent = MAX(dc.font.ascent, (*xfonts)->ascent);
dc.font.descent = MAX(dc.font.descent,(*xfonts)->descent);
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xfonts++;
}
}
else {
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if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
&& !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
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die("error, cannot load font: '%s'\n", fontstr);
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dc.font.ascent = dc.font.xfont->ascent;
dc.font.descent = dc.font.xfont->descent;
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}
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dc.font.height = dc.font.ascent + dc.font.descent;
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}
Bool
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isprotodel(Client *c) {
int i, n;
Atom *protocols;
Bool ret = False;
if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
for(i = 0; !ret && i < n; i++)
if(protocols[i] == wmatom[WMDelete])
ret = True;
XFree(protocols);
}
return ret;
}
void
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keypress(XEvent *e) {
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unsigned int i;
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KeySym keysym;
XKeyEvent *ev;
ev = &e->xkey;
keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
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for(i = 0; i < LENGTH(keys); i++)
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if(keysym == keys[i].keysym
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&& CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
&& keys[i].func)
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keys[i].func(&(keys[i].arg));
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}
void
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killclient(const Arg *arg) {
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XEvent ev;
if(!sel)
return;
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if(isprotodel(sel)) {
ev.type = ClientMessage;
ev.xclient.window = sel->win;
ev.xclient.message_type = wmatom[WMProtocols];
ev.xclient.format = 32;
ev.xclient.data.l[0] = wmatom[WMDelete];
ev.xclient.data.l[1] = CurrentTime;
XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
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}
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else
XKillClient(dpy, sel->win);
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}
void
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manage(Window w, XWindowAttributes *wa) {
Client *c, *t = NULL;
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Window trans = None;
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XWindowChanges wc;
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2008-05-22 09:10:00 -04:00
if(!(c = calloc(1, sizeof(Client))))
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die("fatal: could not calloc() %u bytes\n", sizeof(Client));
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c->win = w;
/* geometry */
c->x = wa->x;
c->y = wa->y;
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c->w = wa->width;
c->h = wa->height;
c->oldbw = wa->border_width;
if(c->w == sw && c->h == sh) {
c->x = sx;
c->y = sy;
c->bw = 0;
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}
else {
if(c->x + c->w + 2 * c->bw > sx + sw)
c->x = sx + sw - NOBORDER(c->w);
if(c->y + c->h + 2 * c->bw > sy + sh)
c->y = sy + sh - NOBORDER(c->h);
c->x = MAX(c->x, sx);
/* only fix client y-offset, if the client center might cover the bar */
c->y = MAX(c->y, ((by == 0) && (c->x + (c->w / 2) >= wx) && (c->x + (c->w / 2) < wx + ww)) ? bh : sy);
c->bw = borderpx;
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}
wc.border_width = c->bw;
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XConfigureWindow(dpy, w, CWBorderWidth, &wc);
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XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
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configure(c); /* propagates border_width, if size doesn't change */
updatesizehints(c);
XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
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grabbuttons(c, False);
updatetitle(c);
if(XGetTransientForHint(dpy, w, &trans))
t = getclient(trans);
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if(t)
c->tags = t->tags;
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else
applyrules(c);
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if(!c->isfloating)
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c->isfloating = trans != None || c->isfixed;
if(c->isfloating)
XRaiseWindow(dpy, c->win);
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attach(c);
attachstack(c);
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XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
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XMapWindow(dpy, c->win);
setclientstate(c, NormalState);
arrange();
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}
void
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mappingnotify(XEvent *e) {
XMappingEvent *ev = &e->xmapping;
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2007-09-16 05:53:14 -04:00
XRefreshKeyboardMapping(ev);
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if(ev->request == MappingKeyboard)
grabkeys();
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}
void
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maprequest(XEvent *e) {
static XWindowAttributes wa;
XMapRequestEvent *ev = &e->xmaprequest;
if(!XGetWindowAttributes(dpy, ev->window, &wa))
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return;
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if(wa.override_redirect)
return;
if(!getclient(ev->window))
manage(ev->window, &wa);
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}
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void
monocle(void) {
Client *c;
for(c = nexttiled(clients); c; c = nexttiled(c->next))
resize(c, wx, wy, NOBORDER(ww), NOBORDER(wh), resizehints);
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}
void
movemouse(const Arg *arg) {
int x, y, ocx, ocy, di, nx, ny;
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unsigned int dui;
Client *c;
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Window dummy;
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XEvent ev;
if(!(c = sel))
return;
restack();
ocx = c->x;
ocy = c->y;
if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
2008-05-13 09:33:02 -04:00
None, cursor[CurMove], CurrentTime) != GrabSuccess)
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return;
XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui);
do {
XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
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switch (ev.type) {
case ConfigureRequest:
case Expose:
case MapRequest:
handler[ev.type](&ev);
break;
case MotionNotify:
XSync(dpy, False);
nx = ocx + (ev.xmotion.x - x);
ny = ocy + (ev.xmotion.y - y);
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if(snap && nx >= wx && nx <= wx + ww
&& ny >= wy && ny <= wy + wh) {
if(abs(wx - nx) < snap)
nx = wx;
else if(abs((wx + ww) - (nx + c->w + 2 * c->bw)) < snap)
nx = wx + ww - NOBORDER(c->w);
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if(abs(wy - ny) < snap)
ny = wy;
else if(abs((wy + wh) - (ny + c->h + 2 * c->bw)) < snap)
ny = wy + wh - NOBORDER(c->h);
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if(!c->isfloating && lt[sellt]->arrange && (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
2008-05-19 08:41:58 -04:00
togglefloating(NULL);
}
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if(!lt[sellt]->arrange || c->isfloating)
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resize(c, nx, ny, c->w, c->h, False);
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break;
}
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}
while(ev.type != ButtonRelease);
XUngrabPointer(dpy, CurrentTime);
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}
Client *
nexttiled(Client *c) {
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for(; c && (c->isfloating || !ISVISIBLE(c)); c = c->next);
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return c;
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}
void
2007-09-16 05:53:14 -04:00
propertynotify(XEvent *e) {
Client *c;
Window trans;
XPropertyEvent *ev = &e->xproperty;
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2007-09-16 05:53:14 -04:00
if(ev->state == PropertyDelete)
return; /* ignore */
if((c = getclient(ev->window))) {
switch (ev->atom) {
default: break;
case XA_WM_TRANSIENT_FOR:
XGetTransientForHint(dpy, c->win, &trans);
if(!c->isfloating && (c->isfloating = (getclient(trans) != NULL)))
arrange();
break;
case XA_WM_NORMAL_HINTS:
updatesizehints(c);
break;
case XA_WM_HINTS:
updatewmhints(c);
drawbar();
break;
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}
if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
updatetitle(c);
if(c == sel)
drawbar();
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}
}
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}
void
2008-06-11 04:12:06 -04:00
quit(const Arg *arg) {
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readin = running = False;
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}
void
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resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
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XWindowChanges wc;
2008-02-20 03:13:41 -05:00
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if(sizehints) {
/* see last two sentences in ICCCM 4.1.2.3 */
Bool baseismin = c->basew == c->minw && c->baseh == c->minh;
/* set minimum possible */
2008-04-20 13:28:21 -04:00
w = MAX(1, w);
h = MAX(1, h);
if(!baseismin) { /* temporarily remove base dimensions */
w -= c->basew;
h -= c->baseh;
}
/* adjust for aspect limits */
2008-06-11 04:12:06 -04:00
if(c->mina > 0 && c->maxa > 0) {
if(c->maxa < (float)(w / h))
2008-06-11 04:12:06 -04:00
w = h * c->maxa;
else if(c->mina < (float)(h / w))
h = w * c->mina;
}
if(baseismin) { /* increment calculation requires this */
w -= c->basew;
h -= c->baseh;
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}
/* adjust for increment value */
if(c->incw)
w -= w % c->incw;
if(c->inch)
h -= h % c->inch;
/* restore base dimensions */
w += c->basew;
h += c->baseh;
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w = MAX(w, c->minw);
h = MAX(h, c->minh);
if(c->maxw)
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w = MIN(w, c->maxw);
if(c->maxh)
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h = MIN(h, c->maxh);
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}
if(w <= 0 || h <= 0)
return;
if(x > sx + sw)
x = sw - NOBORDER(w);
if(y > sy + sh)
y = sh - NOBORDER(h);
if(x + w + 2 * c->bw < sx)
x = sx;
if(y + h + 2 * c->bw < sy)
y = sy;
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if(h < bh)
h = bh;
if(w < bh)
w = bh;
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if(c->x != x || c->y != y || c->w != w || c->h != h) {
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c->x = wc.x = x;
c->y = wc.y = y;
c->w = wc.width = w;
c->h = wc.height = h;
wc.border_width = c->bw;
XConfigureWindow(dpy, c->win,
CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
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configure(c);
XSync(dpy, False);
}
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}
void
resizemouse(const Arg *arg) {
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int ocx, ocy;
int nw, nh;
Client *c;
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XEvent ev;
if(!(c = sel))
return;
restack();
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ocx = c->x;
ocy = c->y;
if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
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None, cursor[CurResize], CurrentTime) != GrabSuccess)
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return;
XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
do {
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XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
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switch(ev.type) {
case ConfigureRequest:
case Expose:
case MapRequest:
handler[ev.type](&ev);
break;
case MotionNotify:
XSync(dpy, False);
nw = MAX(ev.xmotion.x - NOBORDER(ocx) + 1, 1);
nh = MAX(ev.xmotion.y - NOBORDER(ocy) + 1, 1);
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if(snap && nw >= wx && nw <= wx + ww
&& nh >= wy && nh <= wy + wh) {
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if(!c->isfloating && lt[sellt]->arrange
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&& (abs(nw - c->w) > snap || abs(nh - c->h) > snap))
togglefloating(NULL);
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}
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if(!lt[sellt]->arrange || c->isfloating)
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resize(c, c->x, c->y, nw, nh, True);
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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));
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}
void
restack(void) {
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Client *c;
XEvent ev;
XWindowChanges wc;
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drawbar();
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if(!sel)
return;
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if(sel->isfloating || !lt[sellt]->arrange)
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XRaiseWindow(dpy, sel->win);
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if(lt[sellt]->arrange) {
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wc.stack_mode = Below;
wc.sibling = barwin;
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for(c = stack; c; c = c->snext)
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if(!c->isfloating && ISVISIBLE(c)) {
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XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
wc.sibling = c->win;
}
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}
XSync(dpy, False);
while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
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}
void
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run(void) {
char *p;
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char sbuf[sizeof stext];
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fd_set rd;
int r, xfd;
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unsigned int len, offset;
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XEvent ev;
/* main event loop, also reads status text from stdin */
XSync(dpy, False);
xfd = ConnectionNumber(dpy);
offset = 0;
len = sizeof stext - 1;
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sbuf[len] = stext[len] = '\0'; /* 0-terminator is never touched */
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while(running) {
FD_ZERO(&rd);
if(readin)
FD_SET(STDIN_FILENO, &rd);
FD_SET(xfd, &rd);
if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
if(errno == EINTR)
continue;
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die("select failed\n");
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}
if(FD_ISSET(STDIN_FILENO, &rd)) {
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switch((r = read(STDIN_FILENO, sbuf + offset, len - offset))) {
case -1:
strncpy(stext, strerror(errno), len);
readin = False;
break;
case 0:
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strncpy(stext, "EOF", 4);
readin = False;
break;
default:
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for(p = sbuf + offset; r > 0; p++, r--, offset++)
if(*p == '\n' || *p == '\0') {
*p = '\0';
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strncpy(stext, sbuf, len);
p += r - 1; /* p is sbuf + offset + r - 1 */
for(r = 0; *(p - r) && *(p - r) != '\n'; r++);
offset = r;
if(r)
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memmove(sbuf, p - r + 1, r);
break;
}
break;
}
drawbar();
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}
while(XPending(dpy)) {
XNextEvent(dpy, &ev);
if(handler[ev.type])
(handler[ev.type])(&ev); /* call handler */
}
}
}
void
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scan(void) {
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unsigned int i, num;
Window d1, d2, *wins = NULL;
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XWindowAttributes wa;
if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
for(i = 0; i < num; i++) {
if(!XGetWindowAttributes(dpy, wins[i], &wa)
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|| 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)
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&& (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
manage(wins[i], &wa);
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}
if(wins)
XFree(wins);
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}
}
void
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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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void
setlayout(const Arg *arg) {
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if(!arg || !arg->v || arg->v != lt[sellt])
sellt ^= 1;
if(arg && arg->v)
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lt[sellt] = (Layout *)arg->v;
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if(sel)
arrange();
else
drawbar();
}
/* arg > 1.0 will set mfact absolutly */
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void
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setmfact(const Arg *arg) {
float f;
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if(!arg || !lt[sellt]->arrange)
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return;
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f = arg->f < 1.0 ? arg->f + mfact : arg->f - 1.0;
if(f < 0.1 || f > 0.9)
return;
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mfact = f;
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arrange();
}
void
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setup(void) {
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unsigned int i;
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int w;
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XSetWindowAttributes wa;
/* init screen */
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);
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initfont(font);
sx = 0;
sy = 0;
sw = DisplayWidth(dpy, screen);
sh = DisplayHeight(dpy, screen);
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bh = dc.h = dc.font.height + 2;
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lt[0] = &layouts[0];
lt[1] = &layouts[1 % LENGTH(layouts)];
updategeom();
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/* init atoms */
wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
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/* init cursors */
wa.cursor = cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
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cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
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2008-02-18 12:08:22 -05:00
/* init appearance */
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dc.norm[ColBorder] = getcolor(normbordercolor);
dc.norm[ColBG] = getcolor(normbgcolor);
dc.norm[ColFG] = getcolor(normfgcolor);
dc.sel[ColBorder] = getcolor(selbordercolor);
dc.sel[ColBG] = getcolor(selbgcolor);
dc.sel[ColFG] = getcolor(selfgcolor);
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dc.drawable = XCreatePixmap(dpy, root, DisplayWidth(dpy, screen), bh, DefaultDepth(dpy, screen));
dc.gc = XCreateGC(dpy, root, 0, 0);
XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
if(!dc.font.set)
XSetFont(dpy, dc.gc, dc.font.xfont->fid);
/* init bar */
for(blw = i = 0; LENGTH(layouts) > 1 && i < LENGTH(layouts); i++) {
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w = TEXTW(layouts[i].symbol);
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blw = MAX(blw, w);
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}
wa.override_redirect = 1;
wa.background_pixmap = ParentRelative;
wa.event_mask = ButtonPressMask|ExposureMask;
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barwin = XCreateWindow(dpy, root, wx, by, ww, bh, 0, DefaultDepth(dpy, screen),
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CopyFromParent, DefaultVisual(dpy, screen),
CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
XDefineCursor(dpy, barwin, cursor[CurNormal]);
XMapRaised(dpy, barwin);
strcpy(stext, "dwm-"VERSION);
drawbar();
/* EWMH support per view */
XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
PropModeReplace, (unsigned char *) netatom, NetLast);
/* select for events */
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wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask|ButtonPressMask
|EnterWindowMask|LeaveWindowMask|StructureNotifyMask;
XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
XSelectInput(dpy, root, wa.event_mask);
grabkeys();
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}
void
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spawn(const Arg *arg) {
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/* The double-fork construct avoids zombie processes and keeps the code
* clean from stupid signal handlers. */
if(fork() == 0) {
if(fork() == 0) {
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if(dpy)
close(ConnectionNumber(dpy));
setsid();
execvp(((char **)arg->v)[0], (char **)arg->v);
fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
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perror(" failed");
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}
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exit(0);
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}
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wait(0);
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}
void
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tag(const Arg *arg) {
if(sel && arg->ui & TAGMASK) {
sel->tags = arg->ui & TAGMASK;
arrange();
}
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}
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int
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textnw(const char *text, unsigned int len) {
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XRectangle r;
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2008-02-18 12:08:22 -05:00
if(dc.font.set) {
XmbTextExtents(dc.font.set, text, len, NULL, &r);
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return r.width;
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}
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return XTextWidth(dc.font.xfont, text, len);
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}
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void
tile(void) {
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int x, y, h, w, mw;
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unsigned int i, n;
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Client *c;
for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next), n++);
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if(n == 0)
return;
/* master */
c = nexttiled(clients);
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mw = mfact * ww;
resize(c, wx, wy, NOBORDER(n == 1 ? ww : mw), NOBORDER(wh), resizehints);
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if(--n == 0)
return;
/* tile stack */
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x = (wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : wx + mw;
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y = wy;
w = (wx + mw > c->x + c->w) ? wx + ww - x : ww - mw;
h = wh / n;
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if(h < bh)
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h = wh;
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for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
resize(c, x, y, NOBORDER(w), /* remainder */ ((i + 1 == n)
? NOBORDER(wy + wh) - y : h), resizehints);
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if(h != wh)
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y = c->y + c->h + 2 * c->bw;
}
}
void
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togglebar(const Arg *arg) {
showbar = !showbar;
updategeom();
updatebar();
arrange();
}
void
2008-06-11 04:12:06 -04:00
togglefloating(const Arg *arg) {
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if(!sel)
return;
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sel->isfloating = !sel->isfloating || sel->isfixed;
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if(sel->isfloating)
resize(sel, sel->x, sel->y, sel->w, sel->h, True);
arrange();
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}
void
2008-06-11 04:12:06 -04:00
toggletag(const Arg *arg) {
unsigned int mask;
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if (!sel)
return;
mask = sel->tags ^ (arg->ui & TAGMASK);
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if(sel && mask) {
sel->tags = mask;
arrange();
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}
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}
void
2008-06-11 04:12:06 -04:00
toggleview(const Arg *arg) {
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unsigned int mask = tagset[seltags] ^ (arg->ui & TAGMASK);
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if(mask) {
tagset[seltags] = mask;
clearurgent();
arrange();
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}
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}
void
2007-09-16 05:53:14 -04:00
unmanage(Client *c) {
XWindowChanges wc;
wc.border_width = c->oldbw;
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/* The server grab construct avoids race conditions. */
XGrabServer(dpy);
XSetErrorHandler(xerrordummy);
XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
detach(c);
detachstack(c);
if(sel == c)
focus(NULL);
XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
setclientstate(c, WithdrawnState);
free(c);
XSync(dpy, False);
XSetErrorHandler(xerror);
XUngrabServer(dpy);
arrange();
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}
void
2007-09-16 05:53:14 -04:00
unmapnotify(XEvent *e) {
Client *c;
XUnmapEvent *ev = &e->xunmap;
if((c = getclient(ev->window)))
unmanage(c);
}
2008-03-13 06:19:05 -04:00
void
updatebar(void) {
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if(dc.drawable != 0)
XFreePixmap(dpy, dc.drawable);
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dc.drawable = XCreatePixmap(dpy, root, ww, bh, DefaultDepth(dpy, screen));
XMoveResizeWindow(dpy, barwin, wx, by, ww, bh);
2008-03-13 06:19:05 -04:00
}
void
updategeom(void) {
#ifdef XINERAMA
int n, i = 0;
XineramaScreenInfo *info = NULL;
/* window area geometry */
if(XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
if(n > 1) {
int di, x, y;
unsigned int dui;
Window dummy;
if(XQueryPointer(dpy, root, &dummy, &dummy, &x, &y, &di, &di, &dui))
for(i = 0; i < n; i++)
if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
break;
}
wx = info[i].x_org;
wy = showbar && topbar ? info[i].y_org + bh : info[i].y_org;
ww = info[i].width;
wh = showbar ? info[i].height - bh : info[i].height;
XFree(info);
}
else
#endif
{
wx = sx;
wy = showbar && topbar ? sy + bh : sy;
ww = sw;
wh = showbar ? sh - bh : sh;
}
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/* bar position */
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by = showbar ? (topbar ? wy - bh : wy + wh) : -bh;
}
void
updatenumlockmask(void) {
unsigned int i, j;
XModifierKeymap *modmap;
numlockmask = 0;
modmap = XGetModifierMapping(dpy);
for(i = 0; i < 8; i++)
for(j = 0; j < modmap->max_keypermod; j++)
if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
numlockmask = (1 << i);
XFreeModifiermap(modmap);
}
void
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updatesizehints(Client *c) {
long msize;
XSizeHints size;
XGetWMNormalHints(dpy, c->win, &size, &msize);
if(size.flags & PBaseSize) {
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c->basew = size.base_width;
c->baseh = size.base_height;
}
else if(size.flags & PMinSize) {
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c->basew = size.min_width;
c->baseh = size.min_height;
}
else
c->basew = c->baseh = 0;
if(size.flags & PResizeInc) {
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c->incw = size.width_inc;
c->inch = size.height_inc;
}
else
c->incw = c->inch = 0;
if(size.flags & PMaxSize) {
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c->maxw = size.max_width;
c->maxh = size.max_height;
}
else
c->maxw = c->maxh = 0;
if(size.flags & PMinSize) {
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c->minw = size.min_width;
c->minh = size.min_height;
}
else if(size.flags & PBaseSize) {
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c->minw = size.base_width;
c->minh = size.base_height;
}
else
c->minw = c->minh = 0;
if(size.flags & PAspect) {
2008-06-11 04:12:06 -04:00
c->mina = (float)size.min_aspect.y / (float)size.min_aspect.x;
c->maxa = (float)size.max_aspect.x / (float)size.max_aspect.y;
2007-09-16 05:53:14 -04:00
}
else
2008-06-11 04:12:06 -04:00
c->maxa = c->mina = 0.0;
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c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
&& c->maxw == c->minw && c->maxh == c->minh);
}
void
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updatetitle(Client *c) {
if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
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gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
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}
void
updatewmhints(Client *c) {
XWMHints *wmh;
if((wmh = XGetWMHints(dpy, c->win))) {
if(ISVISIBLE(c) && wmh->flags & XUrgencyHint) {
wmh->flags &= ~XUrgencyHint;
XSetWMHints(dpy, c->win, wmh);
}
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else
c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
XFree(wmh);
}
}
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void
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view(const Arg *arg) {
if((arg->ui & TAGMASK) == tagset[seltags])
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return;
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seltags ^= 1; /* toggle sel tagset */
if(arg->ui & TAGMASK)
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tagset[seltags] = arg->ui & TAGMASK;
clearurgent();
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arrange();
}
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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
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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)
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|| (ee->request_code == X_GrabButton && ee->error_code == BadAccess)
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|| (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",
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ee->request_code, ee->error_code);
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return xerrorxlib(dpy, ee); /* may call exit */
}
int
xerrordummy(Display *dpy, XErrorEvent *ee) {
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return 0;
}
/* Startup Error handler to check if another window manager
* is already running. */
int
xerrorstart(Display *dpy, XErrorEvent *ee) {
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otherwm = True;
return -1;
}
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void
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zoom(const Arg *arg) {
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Client *c = sel;
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if(!lt[sellt]->arrange || lt[sellt]->arrange == monocle || (sel && sel->isfloating))
return;
if(c == nexttiled(clients))
if(!c || !(c = nexttiled(c->next)))
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return;
detach(c);
attach(c);
focus(c);
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arrange();
}
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int
main(int argc, char *argv[]) {
if(argc == 2 && !strcmp("-v", argv[1]))
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die("dwm-"VERSION", © 2006-2008 dwm engineers, see LICENSE for details\n");
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else if(argc != 1)
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die("usage: dwm [-v]\n");
if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
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fprintf(stderr, "warning: no locale support\n");
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if(!(dpy = XOpenDisplay(0)))
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die("dwm: cannot open display\n");
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checkotherwm();
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setup();
scan();
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run();
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cleanup();
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XCloseDisplay(dpy);
return 0;
}