path: root/navit/gui/internal/gui_internal_poi.c

#include <glib.h>
#include <stdlib.h>
#include "color.h"
#include "coord.h"
#include "point.h"
#include "callback.h"
#include "graphics.h"
#include "debug.h"
#include "navit.h"
#include "navit_nls.h"
#include "item.h"
#include "xmlconfig.h"
#include "map.h"
#include "mapset.h"
#include "layout.h"
#include "route.h"
#include "transform.h"
#include "linguistics.h"
#include "fib.h"
#include "util.h"
#include "gui_internal.h"
#include "gui_internal_widget.h"
#include "gui_internal_priv.h"
#include "gui_internal_html.h"
#include "gui_internal_menu.h"
#include "gui_internal_keyboard.h"
#include "gui_internal_poi.h"


struct item_data {
	int dist;
	char *label;
	struct item item;
	struct coord c;
};

struct selector {
	char *icon;
	char *name;
	enum item_type *types;
};
static enum item_type selectors_BankTypes[]={type_poi_bank,type_poi_bank, type_poi_atm,type_poi_atm, type_none};
static enum item_type selectors_FuelTypes[]={type_poi_fuel,type_poi_fuel,type_none};
static enum item_type selectors_HotelTypes[]={type_poi_hotel,type_poi_camp_rv,type_poi_camping,type_poi_camping,
    type_poi_resort,type_poi_resort,type_poi_motel,type_poi_hostel,type_none};
static enum item_type selectors_RestaurantTypes[]={type_poi_bar,type_poi_picnic,type_poi_burgerking,type_poi_fastfood,
    type_poi_restaurant,type_poi_restaurant,type_poi_cafe,type_poi_cafe,type_poi_pub,type_poi_pub,type_none};
static enum item_type selectors_ShoppingTypes[]={type_poi_mall,type_poi_mall,type_poi_shop_grocery,type_poi_shop_grocery,
    type_poi_shopping,type_poi_shopping,type_poi_shop_butcher,type_poi_shop_baker,type_poi_shop_fruit,
    type_poi_shop_fruit,type_poi_shop_beverages,type_poi_shop_beverages,type_none};
static enum item_type selectors_ServiceTypes[]={type_poi_marina,type_poi_marina,type_poi_hospital,type_poi_hospital,
    type_poi_public_utilities,type_poi_public_utilities,type_poi_police,type_poi_autoservice,type_poi_information,
    type_poi_information,type_poi_pharmacy,type_poi_pharmacy,type_poi_personal_service,type_poi_repair_service,
    type_poi_restroom,type_poi_restroom,type_none};
static enum item_type selectors_ParkingTypes[]={type_poi_car_parking,type_poi_car_parking,type_none};
static enum item_type selectors_LandFeaturesTypes[]={type_poi_land_feature,type_poi_rock,type_poi_dam,type_poi_dam,
    type_poi_peak,type_poi_peak,type_none};
static enum item_type selectors_OtherTypes[]={type_point_unspecified,type_poi_land_feature-1,type_poi_rock+1,type_poi_fuel-1,
    type_poi_marina+1,type_poi_shopping-1,type_poi_shopping+1,type_poi_car_parking-1,type_poi_car_parking+1,
    type_poi_bar-1,type_poi_bank+1,type_poi_dam-1,type_poi_dam+1,type_poi_information-1,type_poi_information+1,
    type_poi_mall-1,type_poi_mall+1,type_poi_personal_service-1,type_poi_pharmacy+1,type_poi_repair_service-1,
    type_poi_repair_service+1,type_poi_restaurant-1,type_poi_restaurant+1,type_poi_restroom-1,type_poi_restroom+1,
    type_poi_shop_grocery-1,type_poi_shop_grocery+1,type_poi_peak-1,type_poi_peak+1,type_poi_motel-1,type_poi_hostel+1,
    type_poi_shop_butcher-1,type_poi_shop_baker+1,type_poi_shop_fruit-1,type_poi_shop_fruit+1,type_poi_shop_beverages-1,
    type_poi_shop_beverages+1,type_poi_pub-1,type_poi_atm+1,type_line-1,type_none};
/*static enum item_type selectors_UnknownTypes[]={type_point_unkn,type_point_unkn,type_none};*/
struct selector selectors[]={
	{"bank","Bank",selectors_BankTypes},
	{"fuel","Fuel",selectors_FuelTypes},
	{"hotel","Hotel",selectors_HotelTypes},
	{"restaurant","Restaurant",selectors_RestaurantTypes},
	{"shopping","Shopping",selectors_ShoppingTypes},
	{"hospital","Service",selectors_ServiceTypes},
	{"parking","Parking",selectors_ParkingTypes},
	{"peak","Land Features",selectors_LandFeaturesTypes},
	{"unknown","Other",selectors_OtherTypes},
/*	{"unknown","Unknown",selectors_UnknownTypes},*/
};
/**
 * @brief Get icon for given POI type.
 *
 * @param this pointer to gui context
 * @param type POI type
 * @return  Pointer to graphics_image object, or NULL if no picture available. 
 */

static struct graphics_image *
gui_internal_poi_icon(struct gui_priv *this, struct item *item)
{
	struct attr layout;
	struct attr icon_src;
	GList *layer;
	navit_get_attr(this->nav, attr_layout, &layout, NULL);
	layer=layout.u.layout->layers;
	while(layer) {
		GList *itemgra=((struct layer *)layer->data)->itemgras;
		while(itemgra) {
			GList *types=((struct itemgra *)itemgra->data)->type;
			while(types) {
				if((long)types->data==item->type) {
					GList *element=((struct itemgra *)itemgra->data)->elements;
					while(element) {
						struct element * el=element->data;
						if(el->type==element_icon) {
							char *src;
							char *icon;
							struct graphics_image *img;
							if(item_is_custom_poi(*item)) {
								struct map_rect *mr=map_rect_new(item->map, NULL);
								item=map_rect_get_item_byid(mr, item->id_hi, item->id_lo);
								if(item_attr_get(item, attr_icon_src, &icon_src)) {
									src=el->u.icon.src;
									if(!src || !src[0])
										src="%s";
									icon=g_strdup_printf(src,map_convert_string_tmp(item->map,icon_src.u.str));
								}
								else {
									icon=g_strdup(el->u.icon.src);
								}
							}
							else {
								icon=g_strdup(el->u.icon.src);
							}
							char *dot=g_strrstr(icon,".");
							dbg(lvl_debug,"%s %s\n", item_to_name(item->type),icon);
							if(dot)
								*dot=0;
							img=image_new_xs(this,icon);
							g_free(icon);
							if(img) 
								return img;
						}
						element=g_list_next(element);
					}
				}
				types=g_list_next(types);	
			}
			itemgra=g_list_next(itemgra);
		}
		layer=g_list_next(layer);
	}
	return NULL;
}

/**
 * @brief Free poi_param structure.
 *
 * @param p reference to the object to be freed.
 */

void
gui_internal_poi_param_free(void *p) 
{
	if(((struct poi_param *)p)->filterstr)
	   g_free(((struct poi_param *)p)->filterstr);
	if(((struct poi_param *)p)->filter)
	   g_list_free(((struct poi_param *)p)->filter);
	g_free(p);
};

/**
 * @brief Clone poi_param structure.
 *
 * @param p reference to the object to be cloned.
 * @return  Cloned object reference.
 */

static struct poi_param *
gui_internal_poi_param_clone(struct poi_param *p) 
{
	struct poi_param *r=g_new(struct poi_param,1);
	GList *l=p->filter;
	memcpy(r,p,sizeof(struct poi_param));
	r->filter=NULL;
	r->filterstr=NULL;
	if(p->filterstr) {
		char *last=g_list_last(l)->data;
		int len=(last - p->filterstr) + strlen(last)+1;
		r->filterstr=g_memdup(p->filterstr,len);
	}
	while(l) {
		r->filter=g_list_append(r->filter, r->filterstr + ((char*)(l->data) - p->filterstr) );
		l=g_list_next(l);
	}
	return r;
};

/**
 * @brief Set POIs filter data in poi_param structure.
 * @param param poi_param structure with unset filter data.
 * @param text filter text.
 */

void
gui_internal_poi_param_set_filter(struct poi_param *param, char *text) 
{
	char *s1, *s2;
	
	param->filterstr=removecase(text);
	s1=param->filterstr;
	do {
		s2=g_utf8_strchr(s1,-1,' ');
		if(s2)
			*s2++=0;
		param->filter=g_list_append(param->filter,s1);
		if(s2) {
			while(*s2==' ')
				s2++;
		}
		s1=s2;
	} while(s2 && *s2);
}

static struct widget *
gui_internal_cmd_pois_selector(struct gui_priv *this, struct pcoord *c, int pagenb)
{
	struct widget *wl,*wb;
	int nitems,nrows;
	int i;
	//wl=gui_internal_box_new(this, gravity_left_center|orientation_horizontal|flags_fill);
	wl=gui_internal_box_new(this, gravity_left_center|orientation_horizontal_vertical|flags_fill);
	wl->background=this->background;
	wl->w=this->root.w;
	wl->cols=this->root.w/this->icon_s;
	nitems=sizeof(selectors)/sizeof(struct selector);
	nrows=nitems/wl->cols + (nitems%wl->cols>0);
	wl->h=this->icon_l*nrows;
	for (i = 0 ; i < nitems ; i++) {
		struct poi_param *p=g_new0(struct poi_param,1);
		p->sel = 1;
		p->selnb = i;
		p->pagenb = pagenb;
		p->dist = 0;
		p->filter=NULL;
		p->filterstr=NULL;
		gui_internal_widget_append(wl, wb=gui_internal_button_new_with_callback(this, NULL,
			image_new_s(this, selectors[i].icon), gravity_left_center|orientation_vertical,
			gui_internal_cmd_pois, p));
		wb->c=*c;
		wb->data_free=gui_internal_poi_param_free;
		wb->bt=10;
	}

	gui_internal_widget_append(wl, wb=gui_internal_button_new_with_callback(this, NULL,
			image_new_s(this, "gui_search"), gravity_left_center|orientation_vertical,
			gui_internal_cmd_pois_filter, NULL));
	wb->c=*c;
	wb->bt=10;
	
	gui_internal_widget_pack(this,wl);
	return wl;
}

/**
 * @brief Widget to display POI item.
 *
 * @param this pointer to gui context
 * @param center reference to the standing point where angle to be counted from
 * @param item POI item reference
 * @param c POI coordinates
 * @param dist precomputed distance to POI (or -1 if it's not to be displayed)
 * @param name POI name
 * @return  Pointer to new widget.
 */

static void
format_dist(int dist, char *distbuf)
{
	if (dist > 10000)
		sprintf(distbuf,"%d ", dist/1000);
	else if (dist>0)
		sprintf(distbuf,"%d.%d ", dist/1000, (dist%1000)/100);
}

struct widget *
gui_internal_cmd_pois_item(struct gui_priv *this, struct coord *center, struct item *item, struct coord *c, struct route *route, int dist, char* name)
{
	char distbuf[32]="";
	char dirbuf[32]="";
	char routedistbuf[32]="";
	char *type;
	struct widget *wl;
	char *text;
	struct graphics_image *icon;

	format_dist(dist,distbuf);
	if(c) {
		int len; 		
		get_compass_direction(dirbuf, transform_get_angle_delta(center, c, 0), 1);
		len=strlen(dirbuf);
		dirbuf[len]=' ';
		dirbuf[len+1]=0;
		if (route) {
			route_get_distances(route, c, 1, &dist);
			if (dist != INT_MAX)
				format_dist(dist, routedistbuf);
		}
	}

	
	type=item_to_name(item->type);

	icon=gui_internal_poi_icon(this,item);
	if(!icon && item->type==type_house_number)
		icon=image_new_xs(this,"post");
	if(!icon) {
		icon=image_new_xs(this,"gui_inactive");
		text=g_strdup_printf("%s%s%s%s %s", distbuf, dirbuf, routedistbuf, type, name);
	} else if(strlen(name)>0)
		text=g_strdup_printf("%s%s%s%s", distbuf, dirbuf, routedistbuf, name);
	else 
		text=g_strdup_printf("%s%s%s%s", distbuf, dirbuf, routedistbuf, type);
		
	wl=gui_internal_button_new_with_callback(this, text, icon, gravity_left_center|orientation_horizontal|flags_fill, NULL, NULL);
	wl->datai=dist;
	g_free(text);
	if (name[0]) {
		wl->name=g_strdup_printf("%s %s",type,name);
	} else {
		wl->name=g_strdup(type);
	}
	wl->func=gui_internal_cmd_position;
	wl->data=(void *)9;
	wl->item=*item;
	wl->state|= STATE_SENSITIVE;
	return wl;
}

/**
 * @brief Get string representation of item address suitable for doing search and for display in POI list.
 *
 * @param item reference to item.
 * @return  Pointer to string representation of address. To be g_free()d after use.
 */

char *
gui_internal_compose_item_address_string(struct item *item, int prependPostal)
{
	char *s=g_strdup("");
	struct attr attr;
	if(prependPostal && item_attr_get(item, attr_postal, &attr)) 
		s=g_strjoin(" ",s,map_convert_string_tmp(item->map,attr.u.str),NULL);
	if(item_attr_get(item, attr_house_number, &attr)) 
		s=g_strjoin(" ",s,map_convert_string_tmp(item->map,attr.u.str),NULL);
	if(item_attr_get(item, attr_street_name, &attr)) 
		s=g_strjoin(" ",s,map_convert_string_tmp(item->map,attr.u.str),NULL);
	if(item_attr_get(item, attr_street_name_systematic, &attr)) 
		s=g_strjoin(" ",s,map_convert_string_tmp(item->map,attr.u.str),NULL);
	if(item_attr_get(item, attr_district_name, &attr)) 
		s=g_strjoin(" ",s,map_convert_string_tmp(item->map,attr.u.str),NULL);
	if(item_attr_get(item, attr_town_name, &attr)) 
		s=g_strjoin(" ",s,map_convert_string_tmp(item->map,attr.u.str),NULL);
	if(item_attr_get(item, attr_county_name, &attr)) 
		s=g_strjoin(" ",s,map_convert_string_tmp(item->map,attr.u.str),NULL);
	if(item_attr_get(item, attr_country_name, &attr)) 
		s=g_strjoin(" ",s,map_convert_string_tmp(item->map,attr.u.str),NULL);
	
	if(item_attr_get(item, attr_address, &attr)) 
		s=g_strjoin(" ",s,"|",map_convert_string_tmp(item->map,attr.u.str),NULL);
	return s;
}

static int
gui_internal_cmd_pois_item_selected(struct poi_param *param, struct item *item)
{
	enum item_type *types;
	struct selector *sel = param->sel? &selectors[param->selnb]: NULL;
	enum item_type type=item->type;
	struct attr attr;
	int match=0;
	if (type >= type_line && param->filter==NULL)
		return 0;
	if (! sel || !sel->types) {
		match=1;
	} else {
		types=sel->types;
		while (*types != type_none) {
			if (item->type >= types[0] && item->type <= types[1]) {
				return 1;
			}
			types+=2;
		}
	}
	if(type == type_house_number && !param->filter)
		return 0;
	if (param->filter) {
		char *long_name, *s;
		GList *f;
		int i;
		if (param->AddressFilterType>0) {
			s=gui_internal_compose_item_address_string(item,param->AddressFilterType==2?1:0);
		} else if (item_attr_get(item, attr_label, &attr)) {
			s=g_strdup_printf("%s %s", item_to_name(item->type), map_convert_string_tmp(item->map,attr.u.str));
		} else {
			s=g_strdup(item_to_name(item->type));
		}
		long_name=removecase(s);
		g_free(s);
                
		match=0;
		for(i=0;i<3 && !match;i++) {
			char *long_name_exp=linguistics_expand_special(long_name, i);
			for(s=long_name_exp,f=param->filter;f && s;f=g_list_next(f)) {
				s=strstr(s,f->data);
				if(!s) {
					break;
				}
				s=g_utf8_strchr(s,-1,' ');
			}
			g_free(long_name_exp);
			if(!f)
				match=1;
		}
		g_free(long_name);
	}
	return match;
}

/**
 * @brief Event handler for POIs list "more" element.
 *
 * @param this The graphics context.
 * @param wm called widget.
 * @param data event data.
 */
static void
gui_internal_cmd_pois_more(struct gui_priv *this, struct widget *wm, void *data) 
{
	struct widget *w=g_new0(struct widget,1);
	w->data=wm->data;
	w->c=wm->c;
	w->w=wm->w;
	wm->data_free=NULL;
	gui_internal_back(this, NULL, NULL);
	gui_internal_cmd_pois(this, w, w->data);
	free(w);
}


/**
 * @brief Event to apply POIs text filter.
 *
 * @param this The graphics context.
 * @param wm called widget.
 * @param data event data (pointer to editor widget containg filter text).
 */
static void
gui_internal_cmd_pois_filter_do(struct gui_priv *this, struct widget *wm, void *data) 
{
	struct widget *w=data;
	struct poi_param *param;
	GList *l;
	
	if(!w->text)
		return;
	
	if(w->data) {
		param=gui_internal_poi_param_clone(w->data);
		param->pagenb=0;
	} else {
		param=g_new0(struct poi_param,1);
	}
	if(!strcmp(wm->name,"AddressFilter"))
		param->AddressFilterType=1;
	else if(!strcmp(wm->name,"AddressFilterZip"))
		param->AddressFilterType=2;
	else
		param->AddressFilterType=0;

	gui_internal_poi_param_set_filter(param, w->text);

	l = g_list_previous(g_list_last(this->root.children));
	gui_internal_prune_menu(this, l->data);

	gui_internal_cmd_pois(this,w,param);
	gui_internal_poi_param_free(param);
}

/**
 * @brief POIs filter dialog.
 * Event to handle '\r' '\n' keys pressed.
 * 
 */

static void
gui_internal_cmd_pois_filter_changed(struct gui_priv *this, struct widget *wm, void *data)
{
	if (wm->text && wm->reason==gui_internal_reason_keypress_finish) {
		gui_internal_cmd_pois_filter_do(this, wm, wm);
	}
}


/**
 * @brief POIs filter dialog.
 *
 * @param this The graphics context.
 * @param wm called widget.
 * @param data event data.
 */
void
gui_internal_cmd_pois_filter(struct gui_priv *this, struct widget *wm, void *data) 
{
	struct widget *wb, *w, *wr, *wk, *we;
	int keyboard_mode;
	keyboard_mode = VKBD_FLAG_2 | gui_internal_keyboard_init_mode(getenv("LANG"));
	wb=gui_internal_menu(this,"Filter");
	w=gui_internal_box_new(this, gravity_center|orientation_vertical|flags_expand|flags_fill);
	gui_internal_widget_append(wb, w);
	wr=gui_internal_box_new(this, gravity_top_center|orientation_vertical|flags_expand|flags_fill);
        gui_internal_widget_append(w, wr);
        we=gui_internal_box_new(this, gravity_left_center|orientation_horizontal|flags_fill);
        gui_internal_widget_append(wr, we);

	gui_internal_widget_append(we, wk=gui_internal_label_new(this, NULL));
	wk->state |= STATE_EDIT|STATE_EDITABLE;
	wk->func=gui_internal_cmd_pois_filter_changed;
	wk->background=this->background;
	wk->flags |= flags_expand|flags_fill;
	wk->name=g_strdup("POIsFilter");
	wk->c=wm->c;
	gui_internal_widget_append(we, wb=gui_internal_image_new(this, image_new_xs(this, "gui_active")));
	wb->state |= STATE_SENSITIVE;
	wb->func = gui_internal_cmd_pois_filter_do;
	wb->name=g_strdup("NameFilter");
	wb->data=wk;
	gui_internal_widget_append(we, wb=gui_internal_image_new(this, image_new_xs(this, "post")));
	wb->state |= STATE_SENSITIVE;
	wb->name=g_strdup("AddressFilter");
	wb->func = gui_internal_cmd_pois_filter_do;
	wb->data=wk;
	gui_internal_widget_append(we, wb=gui_internal_image_new(this, image_new_xs(this, "zipcode")));
	wb->state |= STATE_SENSITIVE;
	wb->name=g_strdup("AddressFilterZip");
	wb->func = gui_internal_cmd_pois_filter_do;
	wb->data=wk;
	
	if (this->keyboard)
		gui_internal_widget_append(w, gui_internal_keyboard(this, keyboard_mode));
	else
		gui_internal_keyboard_show_native(this, w, keyboard_mode, getenv("LANG"));
	gui_internal_menu_render(this);


}

/**
 * @brief Do POI search specified by poi_param and display POIs found
 *
 * @param this The graphics context.
 * @param wm called widget.
 * @param data event data, reference to poi_param or NULL.
 */
void
gui_internal_cmd_pois(struct gui_priv *this, struct widget *wm, void *data)
{
	struct map_selection *sel,*selm;
	struct coord c,center;
	struct mapset_handle *h;
	struct map *m;
	struct map_rect *mr;
	struct item *item;
	struct widget *wi,*w,*w2,*wb, *wtable, *row;
	enum projection pro=wm->c.pro;
	struct poi_param *param;
	int param_free=0;
	int idist,dist;
	struct selector *isel;
	int pagenb;
	int prevdist;
	// Starting value and increment of count of items to be extracted
	const int pagesize = 50; 
	int maxitem, it = 0, i;
	struct item_data *items;
	struct fibheap* fh = fh_makekeyheap();
	int cnt = 0;
	struct table_data *td;
	struct widget *wl,*wt;
	char buffer[32];
	struct poi_param *paramnew;
	struct attr route;
dbg(lvl_debug,"POIs...");
	if(data) {
	  param = data;
	} else {
	  param = g_new0(struct poi_param,1);
	  param_free=1;
	}
	if (navit_get_attr(this->nav, attr_route, &route, NULL)) {
		struct attr route_status;
		if (!route_get_attr(route.u.route, attr_route_status, &route_status, NULL) || 
			(route_status.u.num != route_status_path_done_new &&
			 route_status.u.num != route_status_path_done_incremental))
			route.u.route=NULL;
	} else
		route.u.route=NULL;
	dist=10000*(param->dist+1);
	isel = param->sel? &selectors[param->selnb]: NULL;
	pagenb = param->pagenb;
	prevdist=param->dist*10000;
	maxitem = pagesize*(pagenb+1);
	items= g_new0( struct item_data, maxitem);
	
	
	dbg(lvl_debug, "Params: sel = %i, selnb = %i, pagenb = %i, dist = %i, filterstr = %s, AddressFilterType= %d\n",
		param->sel, param->selnb, param->pagenb, param->dist, param->filterstr, param->AddressFilterType);

	wb=gui_internal_menu(this, isel ? isel->name : _("POIs"));
	w=gui_internal_box_new(this, gravity_top_center|orientation_vertical|flags_expand|flags_fill);
	gui_internal_widget_append(wb, w);
	if (!isel && !param->filter)
		gui_internal_widget_append(w, gui_internal_cmd_pois_selector(this,&wm->c,pagenb));
	w2=gui_internal_box_new(this, gravity_top_center|orientation_vertical|flags_expand|flags_fill);
	gui_internal_widget_append(w, w2);

	sel=map_selection_rect_new(&wm->c,dist*transform_scale(abs(wm->c.y)+dist*1.5),18);
	center.x=wm->c.x;
	center.y=wm->c.y;
	h=mapset_open(navit_get_mapset(this->nav));
        while ((m=mapset_next(h, 1))) {
		selm=map_selection_dup_pro(sel, pro, map_projection(m));
		mr=map_rect_new(m, selm);
		dbg(lvl_debug,"mr=%p\n", mr);
		if (mr) {
			while ((item=map_rect_get_item(mr))) {
				if (gui_internal_cmd_pois_item_selected(param, item) &&
				    item_coord_get_pro(item, &c, 1, pro) &&
				    coord_rect_contains(&sel->u.c_rect, &c)  &&
				    (idist=transform_distance(pro, &center, &c)) < dist) {
					struct item_data *data;
					struct attr attr;
					char *label;
					item_attr_rewind(item);
					if (item->type==type_house_number) {
						label=gui_internal_compose_item_address_string(item,1);
					} else if (item_attr_get(item, attr_label, &attr)) {
						label=map_convert_string(item->map,attr.u.str);
						// Buildings which label is equal to addr:housenumber value
						// are duplicated by item_house_number. Don't include such 
						// buildings into the list. This is true for OSM maps created with 
						// maptool patched with #859 latest patch.
						// FIXME: For non-OSM maps, we probably would better don't skip these items.
						if(item->type==type_poly_building && item_attr_get(item, attr_house_number, &attr) ) {
							if(strcmp(label,map_convert_string_tmp(item->map,attr.u.str))==0) {
								g_free(label);
								continue;
							}
						}

					} else {
						label=g_strdup("");
					}
					
					if(it>=maxitem) {
						data = fh_extractmin(fh);
						g_free(data->label);
						data->label=NULL;
					} else {
						data = &items[it++];
					}
					data->label=label;
					data->item = *item;
					data->c = c;
					data->dist = idist;
					// Key expression is a workaround to fight
					// probable heap collisions when two objects
					// are at the same distance. But it destroys
					// right order of POIs 2048 km away from cener
					// and if table grows more than 1024 rows.
					fh_insertkey(fh, -((idist<<10) + cnt++), data);
					if (it == maxitem)
						dist = (-fh_minkey(fh))>>10;
				}
			}
			map_rect_destroy(mr);
		}
		map_selection_destroy(selm);
	}
	map_selection_destroy(sel);
	mapset_close(h);
	
	wtable = gui_internal_widget_table_new(this,gravity_left_top | flags_fill | flags_expand |orientation_vertical,1);
	td=wtable->data;

	gui_internal_widget_append(w2,wtable);

	// Move items from heap to the table
	for(i=0;;i++) 
	{
		int key = fh_minkey(fh);
		struct item_data *data = fh_extractmin(fh);
		if (data == NULL)
		{
			dbg(lvl_debug, "Empty heap: maxitem = %i, it = %i, dist = %i\n", maxitem, it, dist);
			break;
		}
		dbg(lvl_debug, "dist1: %i, dist2: %i\n", data->dist, (-key)>>10);
		if(i==(it-pagesize*pagenb) && data->dist>prevdist)
			prevdist=data->dist;
		wi=gui_internal_cmd_pois_item(this, &center, &data->item, &data->c, route.u.route, data->dist, data->label);
		wi->c.x=data->c.x;
		wi->c.y=data->c.y;
		wi->c.pro=pro;
		wi->background=this->background;
		row = gui_internal_widget_table_row_new(this,
							  gravity_left
							  | flags_fill
							  | orientation_horizontal);
		gui_internal_widget_append(row,wi);
		row->datai=data->dist;
		gui_internal_widget_prepend(wtable,row);
		g_free(data->label);
	}

	fh_deleteheap(fh);
	free(items);

	// Add an entry for more POI
	row = gui_internal_widget_table_row_new(this,
						  gravity_left
						  | flags_fill
						  | orientation_horizontal);
	row->datai=100000000; // Really far away for Earth, but won't work for bigger planets.
	gui_internal_widget_append(wtable,row);
	wl=gui_internal_box_new(this, gravity_left_center|orientation_horizontal|flags_fill);
	gui_internal_widget_append(row,wl);
	if (it == maxitem) {
		paramnew=gui_internal_poi_param_clone(param);
		paramnew->pagenb++;
		paramnew->count=it;
		snprintf(buffer, sizeof(buffer), "Get more (up to %d items)...", (paramnew->pagenb+1)*pagesize);
		wt=gui_internal_label_new(this, buffer);
		gui_internal_widget_append(wl, wt);
		wt->func=gui_internal_cmd_pois_more;
		wt->data=paramnew;
		wt->data_free=gui_internal_poi_param_free;
		wt->state |= STATE_SENSITIVE;
		wt->c = wm->c;
	} else {
		static int dist[]={1,5,10,0};
		wt=gui_internal_label_new(this, "Set distance to");
		gui_internal_widget_append(wl, wt);
		for(i=0;dist[i];i++) {
			paramnew=gui_internal_poi_param_clone(param);
			paramnew->dist+=dist[i];
			paramnew->count=it;
			snprintf(buffer, sizeof(buffer), " %i ", 10*(paramnew->dist+1));
			wt=gui_internal_label_new(this, buffer);
			gui_internal_widget_append(wl, wt);
			wt->func=gui_internal_cmd_pois_more;
			wt->data=paramnew;
			wt->data_free=gui_internal_poi_param_free;
			wt->state |= STATE_SENSITIVE;
			wt->c = wm->c;
		}
		wt=gui_internal_label_new(this, "km.");
		gui_internal_widget_append(wl, wt);

	}
	// Rendering now is needed to have table_data->bottomrow filled in.
	gui_internal_menu_render(this);
	td=wtable->data;
	if(td->bottom_row!=NULL)
	{
#if 0
		while(((struct widget*)td->bottom_row->data)->datai<=prevdist
				&& (td->next_button->state & STATE_SENSITIVE))
		{
			gui_internal_table_button_next(this, td->next_button, NULL);
		}
#else
		int firstrow=g_list_index(wtable->children, td->top_row->data);
		while(firstrow>=0) {
			int currow=g_list_index(wtable->children, td->bottom_row->data) - firstrow;
			if(currow<0) {
				dbg(lvl_debug,"Can't find bottom row in children list. Stop paging.\n");
				break;
			}
			if(currow>=param->count)
				break;
			if(!(td->scroll_buttons.next_button->state & STATE_SENSITIVE)) {
				dbg(lvl_debug,"Reached last page but item %i not found. Stop paging.\n",param->count);
				break;
			}
			gui_internal_table_button_next(this, td->scroll_buttons.next_button, NULL);
		}
#endif
	}
	gui_internal_menu_render(this);
        if(param_free)
        	g_free(param);
}