/*
 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
 *
 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef __VIKING_GLOBALS_H
#define __VIKING_GLOBALS_H

#include <glib.h>

#define PROJECT "Viking"
#define VIKING_VERSION PACKAGE_VERSION
#define VIKING_VERSION_NAME "This Name For Rent"
#define VIKING_URL "http://viking.sf.net/"

#define ALTI_TO_MPP 1.4017295
#define MPP_TO_ALTI 0.7134044

#define VIK_FEET_IN_METER 3.2808399
#define VIK_METERS_TO_FEET(X) ((X)*VIK_FEET_IN_METER)
#define VIK_FEET_TO_METERS(X) ((X)/VIK_FEET_IN_METER)

/* MPS - Metres Per Second */
/* MPH - Metres Per Hour */
#define VIK_MPH_IN_MPS 2.23693629
#define VIK_MPS_TO_MPH(X) ((X)*VIK_MPH_IN_MPS)
#define VIK_MPH_TO_MPS(X) ((X)/VIK_MPH_IN_MPS)

/* KPH - Kilometres Per Hour */
#define VIK_KPH_IN_MPS 3.6
#define VIK_MPS_TO_KPH(X) ((X)*VIK_KPH_IN_MPS)
#define VIK_KPH_TO_MPS(X) ((X)/VIK_KPH_IN_MPS)

#define VIK_KNOTS_IN_MPS 1.94384449
#define VIK_MPS_TO_KNOTS(X) ((X)*VIK_KNOTS_IN_MPS)
#define VIK_KNOTS_TO_MPS(X) ((X)/VIK_KNOTS_IN_MPS)

#define VIK_DEFAULT_ALTITUDE 0.0
#define VIK_DEFAULT_DOP 0.0

#define VIK_GTK_WINDOW_FROM_WIDGET(x) GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(x)))
#define VIK_GTK_WINDOW_FROM_LAYER(x) VIK_GTK_WINDOW_FROM_WIDGET(VIK_LAYER(x)->vt)

#define DEG2RAD 0.017453293
#define RAD2DEG 57.2957795

/* mercator projection, latitude conversion (degrees) */
#define MERCLAT(x) (RAD2DEG * log(tan((0.25 * M_PI) + (0.5 * DEG2RAD * (x)))))
#define DEMERCLAT(x) (RAD2DEG * atan(sinh(DEG2RAD * (x))))

/* Some command line options */
extern gboolean vik_debug;
extern gboolean vik_verbose;
extern gboolean vik_version;

/* Global preferences */
void a_vik_preferences_init ();

/* Coord display preferences */
typedef enum {
  VIK_DEGREE_FORMAT_DDD,
  VIK_DEGREE_FORMAT_DMM,
  VIK_DEGREE_FORMAT_DMS,
} vik_degree_format_t;

vik_degree_format_t a_vik_get_degree_format ( );

/* Distance preferences */
typedef enum {
  VIK_UNITS_DISTANCE_KILOMETRES,
  VIK_UNITS_DISTANCE_MILES,
} vik_units_distance_t;

vik_units_distance_t a_vik_get_units_distance ( );

/* Speed preferences */
typedef enum {
  VIK_UNITS_SPEED_KILOMETRES_PER_HOUR,
  VIK_UNITS_SPEED_MILES_PER_HOUR,
  VIK_UNITS_SPEED_METRES_PER_SECOND,
  VIK_UNITS_SPEED_KNOTS,
} vik_units_speed_t;

vik_units_speed_t a_vik_get_units_speed ( );

/* Height (Depth) preferences */
typedef enum {
  VIK_UNITS_HEIGHT_METRES,
  VIK_UNITS_HEIGHT_FEET,
} vik_units_height_t;

vik_units_height_t a_vik_get_units_height ( );

gboolean a_vik_get_use_large_waypoint_icons ( );

/* Location preferences */
typedef enum {
  VIK_LOCATION_LAT,
  VIK_LOCATION_LONG,
} vik_location_t;

gdouble a_vik_get_default_lat ( );
gdouble a_vik_get_default_long ( );

/* Group for global preferences */
#define VIKING_PREFERENCES_GROUP_KEY "viking.globals"
#define VIKING_PREFERENCES_NAMESPACE "viking.globals."

#endif