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/*
 * calmwm - the calm window manager
 *
 * Copyright (c) 2004 Marius Aamodt Eriksen <marius@monkey.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * $OpenBSD$
 */

#ifndef _CALMWM_H_
#define _CALMWM_H_

#include <X11/XKBlib.h>
#include <X11/Xatom.h>
#include <X11/Xft/Xft.h>
#include <X11/Xlib.h>
#include <X11/Xproto.h>
#include <X11/Xutil.h>
#include <X11/cursorfont.h>
#include <X11/extensions/Xinerama.h>
#include <X11/extensions/Xrandr.h>
#include <X11/keysym.h>

#undef MIN
#undef MAX
#define MIN(x, y) ((x) < (y) ? (x) : (y))
#define MAX(x, y) ((x) > (y) ? (x) : (y))

#ifndef nitems
#define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
#endif

#define	CONFFILE	".cwmrc"
#define	WMNAME	 	"CWM"

#define BUTTONMASK	(ButtonPressMask|ButtonReleaseMask)
#define MOUSEMASK	(BUTTONMASK|PointerMotionMask)
#define MENUMASK 	(MOUSEMASK|ButtonMotionMask|ExposureMask)
#define MENUGRABMASK	(MOUSEMASK|ButtonMotionMask|StructureNotifyMask)
#define KEYMASK		(KeyPressMask|ExposureMask)
#define IGNOREMODMASK	(LockMask|Mod2Mask)

/* kb movement */
#define CWM_MOVE		0x0001
#define CWM_RESIZE		0x0002
#define CWM_PTRMOVE		0x0004
#define CWM_BIGMOVE		0x0008
#define CWM_UP			0x0010
#define CWM_DOWN		0x0020
#define CWM_LEFT		0x0040
#define CWM_RIGHT		0x0080

/* exec */
#define	CWM_EXEC_PROGRAM	0x0001
#define	CWM_EXEC_WM		0x0002

/* cycle */
#define CWM_CYCLE		0x0001
#define CWM_RCYCLE		0x0002
#define CWM_INGROUP		0x0004

/* menu */
#define CWM_MENU_DUMMY		0x0001
#define CWM_MENU_FILE		0x0002

#define ARG_CHAR		0x0001
#define ARG_INT			0x0002

#define CWM_TILE_HORIZ 		0x0001
#define CWM_TILE_VERT 		0x0002

union arg {
	char	*c;
	int	 i;
};

enum cursor_font {
	CF_DEFAULT,
	CF_MOVE,
	CF_NORMAL,
	CF_QUESTION,
	CF_RESIZE,
	CF_NITEMS
};

enum color {
	CWM_COLOR_BORDER_ACTIVE,
	CWM_COLOR_BORDER_INACTIVE,
	CWM_COLOR_BORDER_GROUP,
	CWM_COLOR_BORDER_UNGROUP,
	CWM_COLOR_MENU_FG,
	CWM_COLOR_MENU_BG,
	CWM_COLOR_MENU_FONT,
	CWM_COLOR_MENU_FONT_SEL,
	CWM_COLOR_NITEMS
};

struct geom {
	int		 x;
	int		 y;
	int		 w;
	int		 h;
};

struct gap {
	int		 top;
	int		 bottom;
	int		 left;
	int		 right;
};

struct winname {
	TAILQ_ENTRY(winname)	 entry;
	char			*name;
};
TAILQ_HEAD(winname_q, winname);

struct client_ctx {
	TAILQ_ENTRY(client_ctx) entry;
	TAILQ_ENTRY(client_ctx) group_entry;
	TAILQ_ENTRY(client_ctx) mru_entry;
	struct screen_ctx	*sc;
	Window			 win;
	Colormap		 colormap;
	u_int			 bwidth; /* border width */
	struct geom		 geom, savegeom;
	struct {
		long		 flags;	/* defined hints */
		int		 basew;	/* desired width */
		int		 baseh;	/* desired height */
		int		 minw;	/* minimum width */
		int		 minh;	/* minimum height */
		int		 maxw;	/* maximum width */
		int		 maxh;	/* maximum height */
		int		 incw;	/* width increment progression */
		int		 inch;	/* height increment progression */
		float		 mina;	/* minimum aspect ratio */
		float		 maxa;	/* maximum aspect ratio */
	} hint;
	struct {
		int		 x;	/* x position */
		int		 y;	/* y position */
	} ptr;
#define CLIENT_HIDDEN			0x0001
#define CLIENT_IGNORE			0x0002
#define CLIENT_VMAXIMIZED		0x0004
#define CLIENT_HMAXIMIZED		0x0008
#define CLIENT_FREEZE			0x0010
#define CLIENT_GROUP			0x0020
#define CLIENT_UNGROUP			0x0040
#define CLIENT_INPUT			0x0080
#define CLIENT_WM_DELETE_WINDOW		0x0100
#define CLIENT_WM_TAKE_FOCUS		0x0200

#define CLIENT_HIGHLIGHT		(CLIENT_GROUP | CLIENT_UNGROUP)
#define CLIENT_MAXFLAGS			(CLIENT_VMAXIMIZED | CLIENT_HMAXIMIZED)
#define CLIENT_MAXIMIZED		(CLIENT_VMAXIMIZED | CLIENT_HMAXIMIZED)
	int			 flags;
	int			 state;
	int			 active;
	int			 stackingorder;
	struct winname_q	 nameq;
#define CLIENT_MAXNAMEQLEN		5
	int			 nameqlen;
	char			*name;
	char			*label;
	char			*matchname;
	struct group_ctx	*group;
	char			*app_class;
	char			*app_name;
};
TAILQ_HEAD(client_ctx_q, client_ctx);
TAILQ_HEAD(cycle_entry_q, client_ctx);

struct winmatch {
	TAILQ_ENTRY(winmatch)	entry;
#define WIN_MAXTITLELEN		256
	char			title[WIN_MAXTITLELEN];
};
TAILQ_HEAD(winmatch_q, winmatch);

struct group_ctx {
	TAILQ_ENTRY(group_ctx)	 entry;
	struct client_ctx_q	 clients;
	int			 shortcut;
	int			 hidden;
	int			 nhidden;
	int			 highstack;
};
TAILQ_HEAD(group_ctx_q, group_ctx);

struct autogroupwin {
	TAILQ_ENTRY(autogroupwin)	 entry;
	char				*class;
	char				*name;
	int 				 num;
};
TAILQ_HEAD(autogroupwin_q, autogroupwin);

struct screen_ctx {
	TAILQ_ENTRY(screen_ctx)	 entry;
	int			 which;
	Visual			*visual;
	Colormap		 colormap;
	Window			 rootwin;
	Window			 menuwin;
	int			 cycling;
	int			 snapdist;
	struct geom		 view; /* viewable area */
	struct geom		 work; /* workable area, gap-applied */
	struct gap		 gap;
	struct cycle_entry_q	 mruq;
	XftColor		 xftcolor[CWM_COLOR_NITEMS];
	XftDraw			*xftdraw;
	XftFont			*xftfont;
	int			 xinerama_no;
	XineramaScreenInfo	*xinerama;
#define CALMWM_NGROUPS		 10
	struct group_ctx	 groups[CALMWM_NGROUPS];
	struct group_ctx_q	 groupq;
	int			 group_hideall;
	int			 group_nonames;
	struct group_ctx	*group_active;
	char 			**group_names;
};
TAILQ_HEAD(screen_ctx_q, screen_ctx);

struct keybinding {
	TAILQ_ENTRY(keybinding)	 entry;
	void			(*callback)(struct client_ctx *, union arg *);
	union arg		 argument;
	u_int			 modmask;
	KeySym			 keysym;
	int			 keycode;
#define KBFLAG_NEEDCLIENT	 0x0001
	int			 flags;
	int			 argtype;
};
TAILQ_HEAD(keybinding_q, keybinding);

struct mousebinding {
	TAILQ_ENTRY(mousebinding)	entry;
	void			 	(*callback)(struct client_ctx *, void *);
	u_int				modmask;
	u_int			 	button;
#define MOUSEBIND_CTX_ROOT		0x0001
#define MOUSEBIND_CTX_WIN		0x0002
	int				flags;
};
TAILQ_HEAD(mousebinding_q, mousebinding);

struct cmd {
	TAILQ_ENTRY(cmd)	entry;
	char			image[MAXPATHLEN];
#define CMD_MAXLABELLEN		256
	char			label[CMD_MAXLABELLEN];
};
TAILQ_HEAD(cmd_q, cmd);

struct menu {
	TAILQ_ENTRY(menu)	 entry;
	TAILQ_ENTRY(menu)	 resultentry;
#define MENU_MAXENTRY		 200
	char			 text[MENU_MAXENTRY + 1];
	char			 print[MENU_MAXENTRY + 1];
	void			*ctx;
	short			 dummy;
	short			 abort;
};
TAILQ_HEAD(menu_q, menu);

struct conf {
	struct keybinding_q	 keybindingq;
	struct autogroupwin_q	 autogroupq;
	struct winmatch_q	 ignoreq;
	struct cmd_q		 cmdq;
	struct mousebinding_q	 mousebindingq;
#define	CONF_STICKY_GROUPS		0x0001
	int			 flags;
#define CONF_BWIDTH			1
	int			 bwidth;
#define	CONF_MAMOUNT			1
	int			 mamount;
#define	CONF_SNAPDIST			0
	int			 snapdist;
	struct gap		 gap;
	char			*color[CWM_COLOR_NITEMS];
	char			 termpath[MAXPATHLEN];
	char			 lockpath[MAXPATHLEN];
	char			 known_hosts[MAXPATHLEN];
#define	CONF_FONT			"sans-serif:pixelsize=14:bold"
	char			*font;
	Cursor			 cursor[CF_NITEMS];
};

/* MWM hints */
struct mwm_hints {
	u_long	flags;
	u_long	functions;
	u_long	decorations;
};
#define MWM_NUMHINTS		3
#define	PROP_MWM_HINTS_ELEMENTS	3
#define	MWM_HINTS_DECORATIONS	(1<<1)
#define	MWM_DECOR_ALL		(1<<0)
#define	MWM_DECOR_BORDER	(1<<1)

extern Display				*X_Dpy;
extern struct screen_ctx_q		 Screenq;
extern struct client_ctx_q		 Clientq;
extern struct conf			 Conf;
extern char				*homedir;
extern int				 HasRandr, Randr_ev;

enum {
	WM_STATE,
	WM_DELETE_WINDOW,
	WM_TAKE_FOCUS,
	WM_PROTOCOLS,
	_MOTIF_WM_HINTS,
	UTF8_STRING,
	WM_CHANGE_STATE,
	CWMH_NITEMS
};
enum {
	_NET_SUPPORTED,
	_NET_SUPPORTING_WM_CHECK,
	_NET_ACTIVE_WINDOW,
	_NET_CLIENT_LIST,
	_NET_NUMBER_OF_DESKTOPS,
	_NET_CURRENT_DESKTOP,
	_NET_DESKTOP_VIEWPORT,
	_NET_DESKTOP_GEOMETRY,
	_NET_VIRTUAL_ROOTS,
	_NET_SHOWING_DESKTOP,
	_NET_DESKTOP_NAMES,
	_NET_WORKAREA,
	_NET_WM_NAME,
	_NET_WM_DESKTOP,
	_NET_CLOSE_WINDOW,
	_NET_WM_STATE,
#define	_NET_WM_STATES_NITEMS	2
	_NET_WM_STATE_MAXIMIZED_VERT,
	_NET_WM_STATE_MAXIMIZED_HORZ,
	EWMH_NITEMS
};
enum {
	_NET_WM_STATE_REMOVE,
	_NET_WM_STATE_ADD,
	_NET_WM_STATE_TOGGLE
};
extern Atom				 cwmh[CWMH_NITEMS];
extern Atom				 ewmh[EWMH_NITEMS];

__dead void		 usage(void);

void			 client_applysizehints(struct client_ctx *);
void			 client_config(struct client_ctx *);
struct client_ctx	*client_current(void);
void			 client_cycle(struct screen_ctx *, int);
void			 client_cycle_leave(struct screen_ctx *);
void			 client_delete(struct client_ctx *);
void			 client_draw_border(struct client_ctx *);
struct client_ctx	*client_find(Window);
void			 client_freeze(struct client_ctx *);
void			 client_getsizehints(struct client_ctx *);
void			 client_hide(struct client_ctx *);
void			 client_hmaximize(struct client_ctx *);
void 			 client_htile(struct client_ctx *);
void			 client_lower(struct client_ctx *);
void			 client_map(struct client_ctx *);
void			 client_maximize(struct client_ctx *);
void			 client_msg(struct client_ctx *, Atom);
void			 client_move(struct client_ctx *);
struct client_ctx	*client_init(Window, struct screen_ctx *, int);
void			 client_ptrsave(struct client_ctx *);
void			 client_ptrwarp(struct client_ctx *);
void			 client_raise(struct client_ctx *);
void			 client_resize(struct client_ctx *, int);
void			 client_send_delete(struct client_ctx *);
void			 client_setactive(struct client_ctx *);
void			 client_setname(struct client_ctx *);
int			 client_snapcalc(int, int, int, int, int);
void			 client_transient(struct client_ctx *);
void			 client_unhide(struct client_ctx *);
void			 client_vmaximize(struct client_ctx *);
void 			 client_vtile(struct client_ctx *);
void			 client_warp(struct client_ctx *);

void			 group_alltoggle(struct screen_ctx *);
void			 group_autogroup(struct client_ctx *);
void			 group_cycle(struct screen_ctx *, int);
void			 group_hidetoggle(struct screen_ctx *, int);
void			 group_init(struct screen_ctx *);
void			 group_menu(struct screen_ctx *);
void			 group_movetogroup(struct client_ctx *, int);
void			 group_only(struct screen_ctx *, int);
void			 group_sticky(struct client_ctx *);
void			 group_sticky_toggle_enter(struct client_ctx *);
void			 group_sticky_toggle_exit(struct client_ctx *);
void			 group_update_names(struct screen_ctx *);

void			 search_match_client(struct menu_q *, struct menu_q *,
			     char *);
void			 search_match_exec(struct menu_q *, struct menu_q *,
			     char *);
void			 search_match_exec_path(struct menu_q *,
			     struct menu_q *, char *);
void			 search_match_path_any(struct menu_q *, struct menu_q *,
			     char *);
void			 search_match_text(struct menu_q *, struct menu_q *,
			     char *);
void			 search_print_client(struct menu *, int);

struct geom		 screen_find_xinerama(struct screen_ctx *, int, int);
struct screen_ctx	*screen_fromroot(Window);
void			 screen_init(int);
void			 screen_update_geometry(struct screen_ctx *);
void			 screen_updatestackingorder(struct screen_ctx *);

void			 kbfunc_client_cycle(struct client_ctx *, union arg *);
void			 kbfunc_client_cyclegroup(struct client_ctx *,
			     union arg *);
void			 kbfunc_client_delete(struct client_ctx *, union arg *);
void			 kbfunc_client_freeze(struct client_ctx *, union arg *);
void			 kbfunc_client_group(struct client_ctx *, union arg *);
void			 kbfunc_client_grouponly(struct client_ctx *,
			     union arg *);
void			 kbfunc_client_grouptoggle(struct client_ctx *,
			     union arg *);
void			 kbfunc_client_hide(struct client_ctx *, union arg *);
void			 kbfunc_client_hmaximize(struct client_ctx *,
			     union arg *);
void			 kbfunc_client_label(struct client_ctx *, union arg *);
void			 kbfunc_client_lower(struct client_ctx *, union arg *);
void			 kbfunc_client_maximize(struct client_ctx *,
			     union arg *);
void			 kbfunc_client_moveresize(struct client_ctx *,
			     union arg *);
void			 kbfunc_client_movetogroup(struct client_ctx *,
			     union arg *);
void			 kbfunc_client_nogroup(struct client_ctx *,
			     union arg *);
void			 kbfunc_client_raise(struct client_ctx *, union arg *);
void			 kbfunc_client_rcycle(struct client_ctx *, union arg *);
void			 kbfunc_client_search(struct client_ctx *, union arg *);
void			 kbfunc_client_vmaximize(struct client_ctx *,
			     union arg *);
void			 kbfunc_cmdexec(struct client_ctx *, union arg *);
void			 kbfunc_exec(struct client_ctx *, union arg *);
void			 kbfunc_lock(struct client_ctx *, union arg *);
void			 kbfunc_menu_search(struct client_ctx *, union arg *);
void			 kbfunc_quit_wm(struct client_ctx *, union arg *);
void			 kbfunc_restart(struct client_ctx *, union arg *);
void			 kbfunc_ssh(struct client_ctx *, union arg *);
void			 kbfunc_term(struct client_ctx *, union arg *);
void 			 kbfunc_tile(struct client_ctx *, union arg *);

void			 mousefunc_client_cyclegroup(struct client_ctx *,
			    void *);
void			 mousefunc_client_grouptoggle(struct client_ctx *,
			    void *);
void			 mousefunc_client_hide(struct client_ctx *, void *);
void			 mousefunc_client_lower(struct client_ctx *, void *);
void			 mousefunc_client_move(struct client_ctx *, void *);
void			 mousefunc_client_raise(struct client_ctx *, void *);
void			 mousefunc_client_rcyclegroup(struct client_ctx *,
    			   void *);
void			 mousefunc_client_resize(struct client_ctx *, void *);
void			 mousefunc_menu_cmd(struct client_ctx *, void *);
void			 mousefunc_menu_group(struct client_ctx *, void *);
void			 mousefunc_menu_unhide(struct client_ctx *, void *);

struct menu  		*menu_filter(struct screen_ctx *, struct menu_q *,
			     char *, char *, int,
			     void (*)(struct menu_q *, struct menu_q *, char *),
			     void (*)(struct menu *, int));
void			 menuq_clear(struct menu_q *);

int			 parse_config(const char *, struct conf *);

void			 conf_atoms(void);
void			 conf_autogroup(struct conf *, int, char *);
void			 conf_bind_kbd(struct conf *, char *, char *);
int			 conf_bind_mouse(struct conf *, char *, char *);
void			 conf_clear(struct conf *);
void			 conf_client(struct client_ctx *);
void			 conf_cmd_add(struct conf *, char *, char *);
void			 conf_cursor(struct conf *);
void			 conf_grab_kbd(Window);
void			 conf_grab_mouse(Window);
void			 conf_init(struct conf *);
void			 conf_ignore(struct conf *, char *);
void			 conf_screen(struct screen_ctx *);

void			 xev_loop(void);

void			 xu_btn_grab(Window, int, u_int);
void			 xu_btn_ungrab(Window);
int			 xu_getprop(Window, Atom, Atom, long, unsigned char **);
int			 xu_get_wm_state(Window, int *);
int			 xu_getstrprop(Window, Atom, char **);
void			 xu_key_grab(Window, u_int, KeySym);
void			 xu_key_ungrab(Window);
void			 xu_ptr_getpos(Window, int *, int *);
int			 xu_ptr_grab(Window, u_int, Cursor);
int			 xu_ptr_regrab(u_int, Cursor);
void			 xu_ptr_setpos(Window, int, int);
void			 xu_ptr_ungrab(void);
void			 xu_set_wm_state(Window win, int);
void			 xu_xft_draw(struct screen_ctx *, const char *,
			     int, int, int);
int			 xu_xft_width(XftFont *, const char *, int);
void 			 xu_xorcolor(XftColor, XftColor, XftColor *);

void			 xu_ewmh_net_supported(struct screen_ctx *);
void			 xu_ewmh_net_supported_wm_check(struct screen_ctx *);
void			 xu_ewmh_net_desktop_geometry(struct screen_ctx *);
void			 xu_ewmh_net_workarea(struct screen_ctx *);
void			 xu_ewmh_net_client_list(struct screen_ctx *);
void			 xu_ewmh_net_active_window(struct screen_ctx *, Window);
void			 xu_ewmh_net_wm_desktop_viewport(struct screen_ctx *);
void			 xu_ewmh_net_wm_number_of_desktops(struct screen_ctx *);
void			 xu_ewmh_net_showing_desktop(struct screen_ctx *);
void			 xu_ewmh_net_virtual_roots(struct screen_ctx *);
void			 xu_ewmh_net_current_desktop(struct screen_ctx *, long);
void			 xu_ewmh_net_desktop_names(struct screen_ctx *, char *,
			     int);

void			 xu_ewmh_net_wm_desktop(struct client_ctx *);
Atom 			*xu_ewmh_get_net_wm_state(struct client_ctx *, int *);
void 			 xu_ewmh_handle_net_wm_state_msg(struct client_ctx *,
			     int, Atom , Atom);
void 			 xu_ewmh_set_net_wm_state(struct client_ctx *);
void 			 xu_ewmh_restore_net_wm_state(struct client_ctx *);

void			 u_exec(char *);
void			 u_spawn(char *);

void			*xcalloc(size_t, size_t);
void			*xmalloc(size_t);
char			*xstrdup(const char *);
int			 xasprintf(char **, const char *, ...)
			    __attribute__((__format__ (printf, 2, 3)))
			    __attribute__((__nonnull__ (2)));

#endif /* _CALMWM_H_ */