map_locations.h

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/*
    This file is part of darktable,
    Copyright (C) 2020-2021 Philippe Weyland.
    Copyright (C) 2021 Hubert Kowalski.
    Copyright (C) 2021 Pascal Obry.
    Copyright (C) 2022 Martin Bařinka.
    Copyright (C) 2025 Aurélien PIERRE.
    
    darktable 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 3 of the License, or
    (at your option) any later version.
    
    darktable 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 darktable.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#ifndef DT_METADATA_MAP_LOCATIONS_H
#define DT_METADATA_MAP_LOCATIONS_H
 
#include "metadata/geo.h"
#include <glib.h>
#include <sqlite3.h>
#include <stdint.h>
 
typedef enum dt_map_locations_type_t
{
  MAP_LOCATION_SHAPE_ELLIPSE,
  MAP_LOCATION_SHAPE_RECTANGLE,
  MAP_LOCATION_SHAPE_POLYGONS,
  MAP_LOCATION_SHAPE_MAX
} dt_map_locations_type_t;
 
typedef enum dt_map_locations_action_t
{
  MAP_LOCATION_ACTION_REMOVE,
  MAP_LOCATION_ACTION_UPDATE_OTHERS,
  MAP_LOCATION_ACTION_MAX
} dt_map_locations_action_t;
 
typedef struct dt_map_location_data_t
{
  double lon, lat, delta1, delta2, ratio;
  int shape;
  GList *polygons;
  int plg_pts;
} dt_map_location_data_t;
 
typedef struct dt_location_draw_t
{
  guint id;
  dt_map_location_data_t data;
  void *location;
} dt_location_draw_t;
 
typedef struct dt_map_location_t
{
  guint id;
  gchar *tag;
  guint count;
} dt_map_location_t;
 
// create a new location
guint dt_map_location_new(const char *const name);
 
// remove a location
void dt_map_location_delete(const guint locid);
 
// rename a location
void dt_map_location_rename(const guint locid, const char *const name);
 
// does the location name already exist
gboolean dt_map_location_name_exists(const char *const name);
 
// gets location's images number
int dt_map_location_get_images_count(const guint locid);
 
// retrieve list of tags which are on that path
// to be freed with dt_map_location_free_result()
GList *dt_map_location_get_locations_by_path(const gchar *path,
                                             const gboolean remove_root);
 
// retrieve list of locations which are on the map
// to be freed with g_list_free_full(list, dt_free_gpointer)
GList *dt_map_location_get_locations_on_map(const dt_map_box_t *const bbox);
 
// free map location list
void dt_map_location_free_result(GList **result);
 
// sort the tag list considering the '|' character
GList *dt_map_location_sort(GList *tags);
 
// get location's data
dt_map_location_data_t *dt_map_location_get_data(const guint locid);
 
// set locations's data
void dt_map_location_set_data(const guint locid, const dt_map_location_data_t *g);
 
// find locations which match with that image
GList *dt_map_location_find_locations(const int32_t imgid);
 
// update image's locations - remove old ones and add new ones
void dt_map_location_update_locations(const int32_t imgid, const GList *tags);
 
// update location's images - remove old ones and add new ones
gboolean dt_map_location_update_images(dt_location_draw_t *ld);
 
// return root tag for location geotagging
const char *dt_map_location_data_tag_root();
 
// tell if the point (lon, lat) belongs to location
gboolean dt_map_location_included(const float lon, const float lat,
                                  dt_map_location_data_t *g);
 
// get the map box containing the polygon + flat polygons
GList *dt_map_location_convert_polygons(void *polygons, dt_map_box_t *bbox, int *nb_pts);
 
// get the polygons for the given location
void dt_map_location_get_polygons(dt_location_draw_t *ld);
 
// free flat polygons
void dt_map_location_free_polygons(dt_location_draw_t *ld);
 
#endif // DT_METADATA_MAP_LOCATIONS_H
 
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