/* ************************************
 * vim:tabstop=4:shiftwidth=4
 * xutils.h
 * Sun, 05 Mar 2006 17:16:44 +0600
 * ************************************
 * misc X11 utilities
 * ************************************/

#ifndef _XUTILS_H_
#define _XUTILS_H_

#include <X11/X.h>
#include <X11/Xatom.h>

#include "common.h"
#include "icons.h"

/* Returns 1 if connection is active, 0 otherwise */
int x11_connection_status();

/* Return current server timestamp */
Time x11_get_server_timestamp(Display *dpy, Window wnd);

/* Convinient way to send a client message event */
int x11_send_client_msg32(Display *dpy, Window dst, Window wnd,
                      Atom type, long data0, long data1,
                      long data2, long data3, long data4);

/* Same for visibility event */
int x11_send_visibility(Display *dpy, Window dst, long state);

/* Same for expose event */
int x11_send_expose(Display *dpy, Window dst, int x, int y, int width, int height);

/* Same for button event */
int x11_send_button(Display *dpy, 
		int press, Window dst, Window root, Time time,
		unsigned int button, unsigned int state, 
		int x, int y);

/* Refresh window */
int x11_refresh_window(Display *dpy, Window dst, int width, int height, int exposures);

/* Set window size updating its size hints */
int x11_set_window_size(Display *dpy, Window w, int x, int y);

/* Get window size (uses XGetWindowAttributes) */
int x11_get_window_size(Display *dpy, Window w, int *x, int *y);

/* Get window minimal size hints if they are available */
int x11_get_window_min_size(Display *dpy, Window w, int *x, int *y);

/* Retrive 32-bit property from the target window */
int x11_get_window_prop32(Display *dpy, Window dst, Atom atom, Atom type, unsigned char **data, unsigned long *len);

/* Retrive window-list property from the specified window */
#define x11_get_winlist_prop(dpy, dst, atom, data, len) x11_get_window_prop32(dpy, dst, atom, XA_WINDOW, data, len)

/* Shortcut for the root window case */
#define x11_get_root_winlist_prop(dpy, atom, data, len) x11_get_winlist_prop(dpy, DefaultRootWindow(dpy), atom, data, len)

/* Returns window absolute position (relative to the root window) */
int x11_get_window_abs_coords(Display *dpy, Window dst, int *x, int *y);

/* Get window name. NOT THREAD SAFE. Returns pointer to static buffer */
char *x11_get_window_name(Display *dpy, Window dst, char *def);

/* Find subwindow by name */
Window x11_find_subwindow_by_name(Display *dpy, Window tgt, char *name);

/* Find subwindow by at coords */
Window x11_find_subwindow_at(Display *dpy, Window top, int *x, int *y, int depth);

/* Extends event mask of the root window */
void x11_extend_root_event_mask(Display *dpy, long mask);

/* Parse text representation of a color */
int x11_parse_color(Display *dpy, char *str, XColor *color);

/* Checks if any X11 errors have occured so far. */
/* ACHTUNG!!! after any sequence X operations any of which
 * that might have failed, you _must_ call x11_ok(), since
 * it resets the internal error flag. If you dont, it will show
 * up as a error elsewhere. JFYI, always check for x11_ok() first, 
 * since
 * 		if (!rc || x11_ok()) { fail; }
 * is likely to leave error condition on: x11_ok() wont be called
 * if rc != 0. */
#define x11_ok() x11_ok_helper(__FILE__, __LINE__, __FUNC__)
int x11_ok_helper(const char * file, const int line, const char *func);

/* WARNING: following functions do not support nested calls */

/* Installs custom X11 error handler */
void x11_trap_errors();

/* Removes custom X11 error handler */
int x11_untrap_errors();

#ifdef DEBUG

/* Array that maps event_number -> event_name */
const extern char *x11_event_names[LASTEvent];

/* Dumps window info. Does nothing unless ENABLE_DUMP_WIN_INFO is defined,
 * launches xwininfo and xwinprop otherwise */
void x11_dump_win_info(Display *dpy, Window w);

#else

/* Dummy delcaration */
#define x11_dump_win_info(dpy,w) do {} while (0);
#endif

#endif

