/* See LICENSE file for copyright and license details. */

/* enums */

enum { BarTop, BarBot, BarOff };			/* bar position */

enum { CurNormal, CurResize, CurMove, CurLast };	/* cursor */

enum { ColBorder, ColFG, ColBG, ColLast };		/* color */

enum { NetSupported, NetWMName, NetLast };		/* EWMH atoms */

enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */

/* typedefs */

typedef struct Client Client;

struct Client {

	char name[256];

	int x, y, w, h;

	int rx, ry, rw, rh; /* revert geometry */

	int basew, baseh, incw, inch, maxw, maxh, minw, minh;

	int minax, maxax, minay, maxay;

	long flags;

	unsigned int border, oldborder;

	Bool isbanned, isfixed, ismax, isfloating, wasfloating;

	Bool *tags;

	Client *next;

	Client *prev;

	Client *snext;

	Window win;

};

typedef struct {

	int x, y, w, h;

	unsigned long norm[ColLast];

	unsigned long sel[ColLast];

	Drawable drawable;

	GC gc;

	struct {

		int ascent;

		int descent;

		int height;

		XFontSet set;

		XFontStruct *xfont;

	} font;

} DC; /* draw context */

typedef struct {

	unsigned long mod;

	KeySym keysym;

	void (*func)(const char *arg);

	const char *arg;

} Key;

typedef struct {

	const char *symbol;

	void (*arrange)(void);

} Layout;

typedef struct {

	const char *prop;

	const char *tags;

	Bool isfloating;

} Rule;

typedef struct {

	regex_t *propregex;

	regex_t *tagregex;

} Regs;

/* functions */

void applyrules(Client *c);

void arrange(void);

void attach(Client *c);

void attachstack(Client *c);

void ban(Client *c);

void buttonpress(XEvent *e);

void checkotherwm(void);

void cleanup(void);

void compileregs(void);

void configure(Client *c);

void configurenotify(XEvent *e);

void configurerequest(XEvent *e);

void destroynotify(XEvent *e);

void detach(Client *c);

void detachstack(Client *c);

void drawbar(void);

void drawsquare(Bool filled, Bool empty, unsigned long col[ColLast]);

void drawtext(const char *text, unsigned long col[ColLast]);

void *emallocz(unsigned int size);

void enternotify(XEvent *e);

void eprint(const char *errstr, ...);

void expose(XEvent *e);

void floating(void); /* default floating layout */

void focus(Client *c);

void focusnext(const char *arg);

void focusprev(const char *arg);

Client *getclient(Window w);

unsigned long getcolor(const char *colstr);

long getstate(Window w);

Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);

void grabbuttons(Client *c, Bool focused);

unsigned int idxoftag(const char *tag);

void initfont(const char *fontstr);

Bool isarrange(void (*func)());

Bool isoccupied(unsigned int t);

Bool isprotodel(Client *c);

Bool isvisible(Client *c);

void keypress(XEvent *e);

void killclient(const char *arg);

void leavenotify(XEvent *e);

void manage(Window w, XWindowAttributes *wa);

void mappingnotify(XEvent *e);

void maprequest(XEvent *e);

void movemouse(Client *c);

Client *nexttiled(Client *c);

void propertynotify(XEvent *e);

void quit(const char *arg);

void resize(Client *c, int x, int y, int w, int h, Bool sizehints);

void resizemouse(Client *c);

void restack(void);

void run(void);

void scan(void);

void setclientstate(Client *c, long state);

void setlayout(const char *arg);

void setmwfact(const char *arg);

void setup(void);

void spawn(const char *arg);

void tag(const char *arg);

unsigned int textnw(const char *text, unsigned int len);

unsigned int textw(const char *text);

void tile(void);

void togglebar(const char *arg);

void togglefloating(const char *arg);

void togglemax(const char *arg);

void toggletag(const char *arg);

void toggleview(const char *arg);

void unban(Client *c);

void unmanage(Client *c);

void unmapnotify(XEvent *e);

void updatebarpos(void);

void updatesizehints(Client *c);

void updatetitle(Client *c);

void view(const char *arg);

void viewprevtag(const char *arg);	/* views previous selected tags */

int xerror(Display *dpy, XErrorEvent *ee);

int xerrordummy(Display *dsply, XErrorEvent *ee);

int xerrorstart(Display *dsply, XErrorEvent *ee);

void zoom(const char *arg);

/* variables */

char stext[256];

double mwfact;

int screen, sx, sy, sw, sh, wax, way, waw, wah;

int (*xerrorxlib)(Display *, XErrorEvent *);

unsigned int bh, bpos;

unsigned int blw = 0;

unsigned int ltidx = 0; /* default */

unsigned int nlayouts = 0;

unsigned int nrules = 0;

unsigned int numlockmask = 0;

void (*handler[LASTEvent]) (XEvent *) = {

	[ButtonPress] = buttonpress,

	[ConfigureRequest] = configurerequest,

	[ConfigureNotify] = configurenotify,

	[DestroyNotify] = destroynotify,

	[EnterNotify] = enternotify,

	[LeaveNotify] = leavenotify,

	[Expose] = expose,

	[KeyPress] = keypress,

	[MappingNotify] = mappingnotify,

	[MapRequest] = maprequest,

	[PropertyNotify] = propertynotify,

	[UnmapNotify] = unmapnotify

};

Atom wmatom[WMLast], netatom[NetLast];

Bool otherwm, readin;

Bool running = True;

Bool selscreen = True;

Client *clients = NULL;

Client *sel = NULL;

Client *stack = NULL;

Cursor cursor[CurLast];

Display *dpy;

DC dc = {0};

Window barwin, root;

Regs *regs = NULL;

/* configuration, allows nested code to access above variables */

#include "config.h"

/* Statically define the number of tags. */

unsigned int ntags = sizeof tags / sizeof tags[0];

Bool seltags[sizeof tags / sizeof tags[0]] = {[0] = True};

Bool prevtags[sizeof tags / sizeof tags[0]] = {[0] = True};