#include <string.h>
#include <grass/raster.h>
#include <grass/display.h>
#include "vectpoints.h"
#include <grass/Vect.h>
#include "globals.h"

#define VFILES 12

#define DO_REFRESH -1
#define DO_NEW      0
#define DO_ZOOM     1
#define DO_WARP     2


static int view2on, view2zoomon, numfiles = 0;
static char vect_file[VFILES][GNAME_MAX];
static char vect_mapset[VFILES][GMAPSET_MAX];
static char vect_color[VFILES][10];
static int get_clr_name(char *, int);
static int choose_vectfile(char *, char *);
static int drawvect(int, View *, double *, double *, int);

int plotvect(void)
{
    return (drawvect
	    (DO_NEW, (View *) NULL, (double *)NULL, (double *)NULL, 0));
}

int zoomvect(View * zoom_view)
{
    return (drawvect(DO_ZOOM, zoom_view, (double *)NULL, (double *)NULL, 0));
}

int re_fresh_vect(void)
{
    return (drawvect
	    (DO_REFRESH, (View *) NULL, (double *)NULL, (double *)NULL, 0));
}

int warpvect(double E[], double N[], int trans_order)
{
    return (drawvect(DO_WARP, VIEW_MAP1, E, N, trans_order));
}


static int drawvect(int zoomit,	/* -1 = refresh, 0 = new image, 1 = zoom, 2 = warp */
		    View * zoom_view, double E[], double N[], int trans_order)
{				/* order of transformation if warping vectors */
    int stat = 0;
    int i;
    char name[GNAME_MAX], mapset[GMAPSET_MAX];
    struct Cell_head cellhd;
    struct line_pnts *Points;
    char msg[100], win_name[100];
    int t, b, l, r;
    int blank = 0;
    View *active_view;
    int left, top, nrows, ncols;
    static int vectclr[VFILES];


    /* if refresh screen or overlay & no displayed vector maps return */
    if ((zoomit == DO_REFRESH || zoomit == DO_WARP) && !numfiles) {
	if (zoomit == DO_REFRESH)
	    display_points(1);
	return 0;
    }

    /* numfiles stays at 0 until the end of the first vector map init */

    if (numfiles >= VFILES) {
	G_warning
	    ("Can't display another map; reached maximum number of files");
	return 0;
    }

    select_target_env();

    if (zoomit == DO_REFRESH || zoomit == DO_NEW) {	/* New Map File or Refresh Screen */

	if (zoomit == DO_NEW) {	/* zoomit==0, Draw New Map File */
	    if (!choose_vectfile(name, mapset))
		return 0;

	    strcpy(vect_file[numfiles], name);
	    strcpy(vect_mapset[numfiles], mapset);

	    get_vector_color();	/* ask line_color to draw map */

	    if (!numfiles) {	/* first map: SET VECTOR WINDOW BY WIND */
		if (G_get_window(&cellhd) < 0) {
		    G_warning("Can't read current region parameters");
		    return 0;
		}
		G_copy(&VIEW_MAP2->cell.head, &cellhd, sizeof(cellhd));
	    }
	    else		/* not the first map */
		G_copy(&cellhd, &VIEW_MAP2->cell.head,
		       sizeof(VIEW_MAP2->cell.head));

	    numfiles++;

	}
	else {			/* zoomit=-1 Refresh Screen */
	    G_copy(&cellhd, &VIEW_MAP2->cell.head,
		   sizeof(VIEW_MAP2->cell.head));

	    if (!cellmap_present)
		Erase_view(VIEW_MAP2_ZOOM);

	    VIEW_MAP2_ZOOM->cell.configured = 0;
	    blank = BLACK;
	}

	strcpy(win_name, "vect_map");
	if (!view2on) {
	    t = VIEW_MAP2->top;
	    b = VIEW_MAP2->bottom;
	    l = VIEW_MAP2->left;
	    r = VIEW_MAP2->right;
	    D_new_window(win_name, t, b, l, r);
	    if (!cellmap_present)
		blank = BLACK;
	    else
		blank = 0;	/* don't erase viewport */
	    view2on = 1;
	}

	active_view = VIEW_MAP2;
    }
    else {			/* zoomit>0   Zoom or Warp */

	G_copy(&cellhd, &zoom_view->cell.head, sizeof(zoom_view->cell.head));

	if (!(zoom_view == VIEW_MAP1)) {	/* target side */
	    VIEW_MAP2_ZOOM->cell.configured = 0;
	    strcpy(win_name, "zoom_map");
	    if (!view2zoomon) {
		t = VIEW_MAP2_ZOOM->top;
		b = VIEW_MAP2_ZOOM->bottom;
		l = VIEW_MAP2_ZOOM->left;
		r = VIEW_MAP2_ZOOM->right;
		D_new_window(win_name, t, b, l, r);
		view2zoomon = 1;

	    }
	    active_view = VIEW_MAP2_ZOOM;
	    blank = BLACK;
	}
	else {
	    strcpy(win_name, "warp_map");	/* defined in drawcell routine */
	    active_view = VIEW_MAP1;
	    blank = 0;		/* don't erase viewport */
	}
    }

    nrows = active_view->nrows;
    ncols = active_view->ncols;
    left = active_view->left;
    top = active_view->top;

    D_set_cur_wind(win_name);
    R_standard_color(YELLOW);
    Outline_box(top, top + nrows - 1, left, left + ncols - 1);
    Points = Vect_new_line_struct();

    if (zoomit != DO_WARP) {
	Curses_clear_window(INFO_WINDOW);
	Curses_write_window(INFO_WINDOW, 1, 13, "COORDINATES");
	Curses_write_window(INFO_WINDOW, 3, 2, "MAIN WINDOW");

	sprintf(msg, "N = %10.2f   E = %10.2f", VIEW_MAP2->cell.head.north,
		VIEW_MAP2->cell.head.east);
	Curses_write_window(INFO_WINDOW, 5, 4, msg);
	sprintf(msg, "S = %10.2f   W = %10.2f", VIEW_MAP2->cell.head.south,
		VIEW_MAP2->cell.head.west);
	Curses_write_window(INFO_WINDOW, 6, 4, msg);

	Curses_write_window(INFO_WINDOW, 9, 2, "ZOOM WINDOW");
	sprintf(msg, "N = %10.2f   E = %10.2f",
		VIEW_MAP2_ZOOM->cell.head.north,
		VIEW_MAP2_ZOOM->cell.head.east);
	Curses_write_window(INFO_WINDOW, 11, 4, msg);
	sprintf(msg, "S = %10.2f   W = %10.2f",
		VIEW_MAP2_ZOOM->cell.head.south,
		VIEW_MAP2_ZOOM->cell.head.west);
	Curses_write_window(INFO_WINDOW, 12, 4, msg);
    }

    if (zoomit) {		/* ie ! DO_NEW */

	dsp_setup(blank, &cellhd);

	for (i = 0; i < numfiles; i++) {
	    sprintf(msg, "Displaying %s", vect_file[i]);
	    Menu_msg(msg);
	    R_standard_color(vectclr[i]);
	    if (zoomit != DO_WARP)
		stat = plot(vect_file[i], vect_mapset[i], Points);
	    else
		stat = plot_warp(vect_file[i], vect_mapset[i],
				 Points, E, N, trans_order);
	}
    }
    else {			/* ie DO_NEW */

	if (numfiles == 1) {	/* let first file set window */
	    G_copy(&VIEW_MAP2->cell.head, &cellhd, sizeof(cellhd));

	    cellhd.rows = VIEW_MAP2->nrows;
	    cellhd.cols = VIEW_MAP2->ncols;
	    cellhd.ns_res = (cellhd.north - cellhd.south) / cellhd.rows;
	    cellhd.ew_res = (cellhd.east - cellhd.west) / cellhd.cols;
	    if (cellhd.ns_res > cellhd.ew_res)
		cellhd.ew_res = cellhd.ns_res;
	    else
		cellhd.ns_res = cellhd.ew_res;

	    VIEW_MAP2->cell.ns_res = cellhd.ns_res;
	    VIEW_MAP2->cell.ew_res = cellhd.ew_res;

	    G_copy(&VIEW_MAP2->cell.head, &cellhd, sizeof(cellhd));

	    G_adjust_window_to_box(&cellhd, &VIEW_MAP2->cell.head,
				   VIEW_MAP2->nrows, VIEW_MAP2->ncols);

	    if (!cellmap_present) {
		Configure_view(VIEW_MAP2, vect_file[numfiles - 1],
			       vect_mapset[numfiles - 1], cellhd.ns_res,
			       cellhd.ew_res);
	    }

	    Curses_write_window(INFO_WINDOW, 15, 2,
				"WHERE CURSOR-> Mid Button");
	}

	dsp_setup(blank, &cellhd);

	R_standard_color(YELLOW);
	Outline_box(top, top + nrows - 1, left, left + ncols - 1);

	sprintf(msg, "Displaying %s", vect_file[numfiles - 1]);
	Menu_msg(msg);

	R_standard_color(line_color);
	vectclr[numfiles - 1] = line_color;

	get_clr_name(vect_color[numfiles - 1], line_color);

	stat =
	    plot(vect_file[numfiles - 1], vect_mapset[numfiles - 1], Points);

    }

    display_points(1);

    R_standard_color(WHITE);
    Outline_box(top, top + nrows - 1, left, left + ncols - 1);

    Menu_msg("");

    Vect_destroy_line_struct(Points);

    /*    VIEW_MAP2->cell.configured = 1; XXX */

    select_current_env();
    if (from_screen < 0) {
	from_flag = 1;
	from_screen = 0;
	if (from_keyboard < 0) {
	    from_keyboard = 0;
	    from_screen = 1;
	}
    }

    if (numfiles) {
	Curses_clear_window(MENU_WINDOW);
	Curses_write_window(MENU_WINDOW, 1, 5, "COLOR  MAP FILE");
	for (i = 0; i < numfiles; i++) {
	    sprintf(msg, "%7s  %s", vect_color[i], vect_file[i]);
	    Curses_write_window(MENU_WINDOW, i + 3, 3, msg);
	}
    }

    return 0;
}

static int choose_vectfile(char *name, char *mapset)
{
    return ask_gis_files("vector", vect_list, name, mapset, 1);
}

static int get_clr_name(char *name, int clr)
{
    switch (clr) {
    case BLUE:
	strcpy(name, "blue");
	break;

    case GRAY:
	strcpy(name, "gray");
	break;

    case GREEN:
	strcpy(name, "green");
	break;

    case RED:
	strcpy(name, "red");
	break;

    case WHITE:
	strcpy(name, "white");
	break;

    case YELLOW:
	strcpy(name, "yellow");
	break;
    }

    return 0;
}
