/****************************************************************************
 *
 * MODULE:       d.colors
 * AUTHOR(S):    Jim Westervelt (CERL) (original contributor)
 *               Markus Neteler <neteler itc.it>,
 *               Bernhard Reiter <bernhard intevation.de>, 
 *               Eric G. Miller <egm2 jps.net>, 
 *               Glynn Clements <glynn gclements.plus.com>, 
 *               Hamish Bowman <hamish_nospam yahoo.com>
 * PURPOSE:      user changes color table for raster map layers
 * COPYRIGHT:    (C) 1999-2007 by the GRASS Development Team
 *
 *               This program is free software under the GNU General Public
 *               License (>=v2). Read the file COPYING that comes with GRASS
 *               for details.
 *
 *****************************************************************************/
#include <stdlib.h>
#include <grass/gis.h>
#include <grass/glocale.h>
#include <grass/display.h>
#include <grass/raster.h>
#include "colors.h"

int 
main (int argc, char **argv)
{
    char name[128] = "";
    struct Option *map;
    struct GModule *module;
    char *mapset;
    char buff[500];

    /* must run in a term window */
    G_putenv("GRASS_UI_TERM","1");

    /* Initialize the GIS calls */
    G_gisinit(argv[0]) ;

    /* Try to get default raster name, don't fail so --interface-description works */
    /* don't let R_open_driver() kill us */
    R__open_quiet();
    if (R_open_driver() == 0)
    {
        if(D_get_cell_name (name) < 0)
	    *name = 0;
        R_close_driver();
    }

    module = G_define_module();
    module->keywords = _("display");
    module->description =
	"Allows the user to interactively change the color table "
	"of a raster map layer displayed on the graphics monitor.";

    map = G_define_option();
    map->key = "map";
    map->type = TYPE_STRING;
    if (*name)
	map->answer = name;
    if (*name)
	map->required = NO;
    else
	map->required = YES;
    map->gisprompt = "old,cell,raster" ;
    map->description = "Name of raster map";

    if (G_parser(argc, argv))
	exit(1);

/* Make sure map is available */
    if (map->answer == NULL) exit(0);
    mapset = G_find_cell2 (map->answer, "") ;
    if (mapset == NULL)
    {
	char msg[256];
	sprintf(msg,"Raster file [%s] not available", map->answer);
	G_fatal_error(msg) ;
    }

    if(G_raster_map_is_fp(map->answer, mapset))
    {
        sprintf(buff,"Raster file [%s] is floating point! \nd.colors only works with integer maps", map->answer);
        G_fatal_error(buff) ;
    }

/* connect to the driver */
    if (R_open_driver() != 0)
	G_fatal_error ("No graphics device selected");

/* Read in the map region associated with graphics window */
    D_setup(0);

    get_map_info(map->answer, mapset) ;

    R_close_driver();
    exit(0);
}



