location.c

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/*
    This file is part of darktable,
    Copyright (C) 2011-2014 Henrik Andersson.
    Copyright (C) 2012 Robert Bieber.
    Copyright (C) 2012, 2014, 2016-2018 Tobias Ellinghaus.
    Copyright (C) 2013 johannes hanika.
    Copyright (C) 2013-2016 Roman Lebedev.
    Copyright (C) 2013 Simon Spannagel.
    Copyright (C) 2018 Benoit Brummer.
    Copyright (C) 2018 Maurizio Paglia.
    Copyright (C) 2018 rawfiner.
    Copyright (C) 2019, 2025 Aurélien PIERRE.
    Copyright (C) 2019-2021 Pascal Obry.
    Copyright (C) 2019 Peter Budai.
    Copyright (C) 2020 Aldric Renaudin.
    Copyright (C) 2021-2022 Diederik Ter Rahe.
    Copyright (C) 2021 Philippe Weyland.
    Copyright (C) 2021 Ralf Brown.
    Copyright (C) 2022 luzpaz.
    Copyright (C) 2022 Martin Bařinka.
    Copyright (C) 2022 Miloš Komarčević.
    
    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/>.
*/
 
#include "metadata/geo.h"
#include "control/settings.h"
#include "common/curl_tools.h"
#include "common/glib_utils.h"
#include "system/macros.h"
#include "common/module_versioning.h"
#include "common/utility.h"
#include "common/conf.h"
#include "control/jobs.h"
#include "libs/lib.h"
#include "libs/lib_api.h"
#include "views/view.h"
#include <curl/curl.h>
#include <gdk/gdkkeysyms.h>
#include "gui/window_manager.h"
#include "widgets/accelerators.h"
#include "widgets/container.h"
#include "widgets/widget_settings.h"
#include "control/signal.h"
 
DT_MODULE(1)
 
typedef enum _lib_location_type_t
{
  LOCATION_TYPE_VILLAGE,
  LOCATION_TYPE_HAMLET,
  LOCATION_TYPE_CITY,
  LOCATION_TYPE_ADMINISTRATIVE,
  LOCATION_TYPE_RESIDENTIAL,
  LOCATION_TYPE_UNKNOWN
} _lib_location_type_t;
 
typedef struct _lib_location_result_t
{
  int32_t relevance;
  _lib_location_type_t type;
  float lon;
  float lat;
  dt_map_box_t bbox;
  dt_geo_map_display_t marker_type;
  GList *marker_points;
  gchar *name;
} _lib_location_result_t;
 
typedef struct dt_lib_location_t
{
  GtkEntry *search;
  GtkWidget *result;
  GList *callback_params;
 
  GList *places;
 
  /* result buffer written to by */
  gchar *response;
  size_t response_size;
 
  /* pin, track or polygon currently shown on the map */
  GObject *marker;
  dt_geo_map_display_t marker_type;
 
  /* remember the currently selected search result so we can put it into a preset */
  _lib_location_result_t *selected_location;
 
  // place used to keep biggest polygon
  GList *marker_points;
} dt_lib_location_t;
 
typedef struct _callback_param_t
{
  dt_lib_location_t *lib;
  _lib_location_result_t *result;
} _callback_param_t;
 
#define LIMIT_RESULT 5
 
/* entry value committed, perform a search */
static void _lib_location_entry_activated(GtkButton *button, gpointer user_data);
 
static gboolean _lib_location_result_item_activated(GtkButton *button, GdkEventButton *ev, gpointer user_data);
 
static void _lib_location_parser_start_element(GMarkupParseContext *cxt, const char *element_name,
                                               const char **attribute_names, const gchar **attribute_values,
                                               gpointer user_data, GError **error);
 
static void clear_search(dt_lib_location_t *lib);
 
const char *name(struct dt_lib_module_t *self)
{
  return _("find location");
}
 
const char **views(dt_lib_module_t *self)
{
  static const char *v[] = {"map", NULL};
  return v;
}
 
uint32_t container(dt_lib_module_t *self)
{
  return DT_UI_CONTAINER_PANEL_RIGHT_CENTER;
}
 
 
void gui_reset(dt_lib_module_t *self)
{
  dt_lib_location_t *lib = (dt_lib_location_t *)self->data;
  gtk_entry_set_text(lib->search, "");
  clear_search(lib);
}
 
int position()
{
  return 999;
}
 
/*
  https://nominatim.openstreetmap.org/search/norrköping?format=xml&limit=5
 */
void gui_init(dt_lib_module_t *self)
{
  self->data = calloc(1, sizeof(dt_lib_location_t));
  dt_lib_location_t *lib = self->data;
 
  self->widget = gtk_box_new(GTK_ORIENTATION_VERTICAL, DT_GUI_BOX_SPACING);
 
  /* add search box */
  lib->search = GTK_ENTRY(gtk_entry_new());
  dt_accels_disconnect_on_text_input(GTK_WIDGET(lib->search));
  gtk_box_pack_start(GTK_BOX(self->widget), GTK_WIDGET(lib->search), FALSE, FALSE, 0);
 
  g_signal_connect(G_OBJECT(lib->search), "activate", G_CALLBACK(_lib_location_entry_activated),
                   (gpointer)self);
 
  /* add result vbox */
  lib->result = gtk_box_new(GTK_ORIENTATION_VERTICAL, DT_GUI_BOX_SPACING);
  gtk_box_pack_start(GTK_BOX(self->widget), GTK_WIDGET(lib->result), TRUE, FALSE, 0);
}
 
void gui_cleanup(dt_lib_module_t *self)
{
  if(IS_NULL_PTR(self->data)) return;
  dt_free(self->data);
}
 
static gboolean _event_box_enter_leave(GtkWidget *widget, GdkEventCrossing *event, gpointer user_data)
{
  if(event->type == GDK_ENTER_NOTIFY)
    gtk_widget_set_state_flags(widget, GTK_STATE_FLAG_PRELIGHT, FALSE);
  else
    gtk_widget_unset_state_flags(widget, GTK_STATE_FLAG_PRELIGHT);
 
  return FALSE;
}
 
static GtkWidget *_lib_location_place_widget_new(dt_lib_location_t *lib, _lib_location_result_t *place)
{
  GtkWidget *eb, *vb, *w;
  eb = gtk_event_box_new();
  gtk_widget_set_name(eb, "dt-map-location");
  g_signal_connect(G_OBJECT(eb), "enter-notify-event", G_CALLBACK(_event_box_enter_leave), NULL);
  g_signal_connect(G_OBJECT(eb), "leave-notify-event", G_CALLBACK(_event_box_enter_leave), NULL);
 
  vb = gtk_box_new(GTK_ORIENTATION_VERTICAL, DT_GUI_BOX_SPACING);
 
  /* add name */
  w = gtk_label_new(place->name);
  gtk_label_set_line_wrap(GTK_LABEL(w), TRUE);
  gtk_widget_set_halign(w, GTK_ALIGN_START);
  g_object_set(G_OBJECT(w), "xalign", 0.0, (gchar *)0);
  gtk_box_pack_start(GTK_BOX(vb), w, FALSE, FALSE, 0);
 
  /* add location coord */
  gchar *lat = dt_util_latitude_str(place->lat);
  gchar *lon = dt_util_longitude_str(place->lon);
  gchar *location = g_strconcat(lat, ", ", lon, NULL);
  w = gtk_label_new(location);
  dt_free(lat);
  dt_free(lon);
  dt_free(location);
  gtk_label_set_line_wrap(GTK_LABEL(w), TRUE);
  gtk_widget_set_halign(w, GTK_ALIGN_START);
  gtk_box_pack_start(GTK_BOX(vb), w, FALSE, FALSE, 0);
 
  /* setup layout */
  gtk_container_add(GTK_CONTAINER(eb), vb);
 
  gtk_widget_show_all(eb);
 
  /* connect button press signal for result item */
  _callback_param_t *param = (_callback_param_t *)malloc(sizeof(_callback_param_t));
  lib->callback_params = g_list_append(lib->callback_params, param);
  param->lib = lib;
  param->result = place;
  g_signal_connect(G_OBJECT(eb), "button-press-event", G_CALLBACK(_lib_location_result_item_activated),
                   (gpointer)param);
 
 
  return eb;
}
 
static size_t _lib_location_curl_write_data(void *buffer, size_t size, size_t nmemb, void *userp)
{
  dt_lib_location_t *lib = (dt_lib_location_t *)userp;
 
  char *newdata = g_malloc0(lib->response_size + nmemb + 1);
  if(!IS_NULL_PTR(lib->response)) memcpy(newdata, lib->response, lib->response_size);
  memcpy(newdata + lib->response_size, buffer, nmemb);
  dt_free(lib->response);
  lib->response = newdata;
  lib->response_size += nmemb;
 
  return nmemb;
}
 
 
static GMarkupParser _lib_location_parser = { _lib_location_parser_start_element, NULL, NULL, NULL, NULL };
 
 
static int32_t _lib_location_place_get_zoom(_lib_location_result_t *place)
{
  switch(place->type)
  {
    case LOCATION_TYPE_RESIDENTIAL:
      return 18;
 
    case LOCATION_TYPE_ADMINISTRATIVE:
      return 17;
 
    case LOCATION_TYPE_VILLAGE:
      return 12;
 
    case LOCATION_TYPE_HAMLET:
    case LOCATION_TYPE_CITY:
    case LOCATION_TYPE_UNKNOWN:
    default:
      return 8;
  }
 
  /* should never get here */
  return 0;
}
 
static void _clear_markers(dt_lib_location_t *lib)
{
  if(lib->marker_type == MAP_DISPLAY_NONE) return;
  dt_view_map_remove_marker(dt_view_manager_get_global(), lib->marker_type, lib->marker);
  g_object_unref(lib->marker);
  lib->marker = NULL;
  lib->marker_type = MAP_DISPLAY_NONE;
}
 
static void free_location(_lib_location_result_t *location)
{
  dt_free(location->name);
  g_list_free_full(location->marker_points, dt_free_gpointer);
  location->marker_points = NULL;
  dt_free(location);
}
 
static void clear_search(dt_lib_location_t *lib)
{
  dt_free(lib->response);
  lib->response_size = 0;
  lib->selected_location = NULL;
 
  g_list_free_full(lib->places, (GDestroyNotify)free_location);
  lib->places = NULL;
 
  dt_gui_container_destroy_children(GTK_CONTAINER(lib->result));
  g_list_free_full(lib->callback_params, dt_free_gpointer);
  lib->callback_params = NULL;
 
  _clear_markers(lib);
}
 
static void _show_location(dt_lib_location_t *lib, _lib_location_result_t *p)
{
  if(isnan(p->bbox.lon1) || isnan(p->bbox.lat1) || isnan(p->bbox.lon2) || isnan(p->bbox.lat2))
  {
    int32_t zoom = _lib_location_place_get_zoom(p);
    dt_view_map_center_on_location(dt_view_manager_get_global(), p->lon, p->lat, zoom);
  }
  else
  {
    dt_view_map_center_on_bbox(dt_view_manager_get_global(), p->bbox.lon1, p->bbox.lat1, p->bbox.lon2, p->bbox.lat2);
  }
 
  _clear_markers(lib);
 
  lib->marker = dt_view_map_add_marker(dt_view_manager_get_global(), p->marker_type, p->marker_points);
  lib->marker_type = p->marker_type;
  lib->selected_location = p;
 
  DT_DEBUG_CONTROL_SIGNAL_RAISE(dt_control_signal_get_global(), DT_SIGNAL_LOCATION_CHANGED,
                                p->marker_type == MAP_DISPLAY_POLYGON ? p->marker_points : NULL);
}
 
/* called when search job has been processed and
   result has been parsed */
static void _lib_location_search_finish(gpointer user_data)
{
  dt_lib_module_t *self = (dt_lib_module_t *)user_data;
  dt_lib_location_t *lib = (dt_lib_location_t *)self->data;
 
  /* check if search gave us some result */
  if(IS_NULL_PTR(lib->places)) return;
 
  /* for each location found populate the result list */
  for(const GList *item = lib->places; item; item = g_list_next(item))
  {
    _lib_location_result_t *place = (_lib_location_result_t *)item->data;
    gtk_box_pack_start(GTK_BOX(lib->result), _lib_location_place_widget_new(lib, place), TRUE, TRUE, 0);
    gtk_widget_show(lib->result);
  }
 
  /* if we only got one search result back lets
     set center location and zoom based on place type  */
  if(g_list_is_singleton(lib->places))
  {
    _lib_location_result_t *place = (_lib_location_result_t *)lib->places->data;
    _show_location(lib, place);
  }
}
 
static gboolean _lib_location_search(gpointer user_data)
{
  GMarkupParseContext *ctx = NULL;
  CURL *curl = NULL;
  CURLcode res;
  GError *err = NULL;
 
  dt_lib_module_t *self = (dt_lib_module_t *)user_data;
  dt_lib_location_t *lib = (dt_lib_location_t *)self->data;
  gchar *query = NULL, *text = NULL;
 
  /* get escaped search text */
  text = g_uri_escape_string(gtk_entry_get_text(lib->search), NULL, FALSE);
 
  if(!(text && *text)) goto bail_out;
 
  /* clean up previous results before adding new */
  clear_search(lib);
 
  /* build the query url */
  const char *search_url = dt_conf_get_string_const("plugins/map/geotagging_search_url");
  query = g_strdup_printf(search_url, text, LIMIT_RESULT);
  /* load url */
  curl = curl_easy_init();
  if(IS_NULL_PTR(curl)) goto bail_out;
 
  dt_curl_init(curl, FALSE);
 
  curl_easy_setopt(curl, CURLOPT_URL, query);
  curl_easy_setopt(curl, CURLOPT_WRITEDATA, lib);
  curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, _lib_location_curl_write_data);
  curl_easy_setopt(curl, CURLOPT_USERAGENT, (char *)darktable_package_string);
  curl_easy_setopt(curl, CURLOPT_TIMEOUT, 20L);
 
  res = curl_easy_perform(curl);
  if(res != 0) goto bail_out;
 
  if(!lib->response) goto bail_out;
 
  /* parse xml response and populate the result list */
  ctx = g_markup_parse_context_new(&_lib_location_parser, 0, lib, NULL);
  g_markup_parse_context_parse(ctx, lib->response, lib->response_size, &err);
  if(err) goto bail_out;
 
  /* add the places into the result list */
  GList *item = lib->places;
  if(IS_NULL_PTR(item)) goto bail_out;
 
//   while(item)
//   {
//     _lib_location_result_t *p = (_lib_location_result_t *)item->data;
//     fprintf(stderr, "(%f,%f) %s\n", p->lon, p->lat, p->name);
//     item = g_list_next(item);
//   }
 
/* cleanup an exit search job */
bail_out:
  if(err)
  {
    fprintf(stderr, "location search: %s\n", err->message);
    g_error_free(err);
  }
 
  if(curl) curl_easy_cleanup(curl);
 
  dt_free(text);
  dt_free(query);
 
  if(ctx) g_markup_parse_context_free(ctx);
 
  /* enable the widgets */
  gtk_widget_set_sensitive(GTK_WIDGET(lib->search), TRUE);
  // gtk_widget_set_sensitive(lib->result, FALSE);
 
  return FALSE;
}
 
gboolean _lib_location_result_item_activated(GtkButton *button, GdkEventButton *ev, gpointer user_data)
{
  _callback_param_t *param = (_callback_param_t *)user_data;
  dt_lib_location_t *lib = param->lib;
  _lib_location_result_t *result = param->result;
  _show_location(lib, result);
  return TRUE;
}
 
void _lib_location_entry_activated(GtkButton *button, gpointer user_data)
{
  dt_lib_module_t *self = (dt_lib_module_t *)user_data;
  dt_lib_location_t *lib = (dt_lib_location_t *)self->data;
  const gchar *text = gtk_entry_get_text(lib->search);
  if(IS_NULL_PTR(text) || text[0] == '\0') return;
 
  /* lock the widget while search job is performing */
  gtk_widget_set_sensitive(GTK_WIDGET(lib->search), FALSE);
  // gtk_widget_set_sensitive(lib->result, FALSE);
 
  /* start a bg job for fetching results of a search */
  g_idle_add_full(G_PRIORITY_DEFAULT_IDLE, _lib_location_search, user_data, _lib_location_search_finish);
}
 
 
static void _lib_location_parser_start_element(GMarkupParseContext *cxt, const char *element_name,
                                               const char **attribute_names, const gchar **attribute_values,
                                               gpointer user_data, GError **e)
{
  dt_lib_location_t *lib = (dt_lib_location_t *)user_data;
 
  /* only interested in place element */
  if(strcmp(element_name, "place") != 0) return;
 
  // used to keep the biggest polygon
  lib->marker_points = NULL;
 
  /* create new place */
  _lib_location_result_t *place = g_malloc0(sizeof(_lib_location_result_t));
  if(IS_NULL_PTR(place)) return;
 
  place->lon = NAN;
  place->lat = NAN;
  place->bbox.lon1 = NAN;
  place->bbox.lat1 = NAN;
  place->bbox.lon2 = NAN;
  place->bbox.lat2 = NAN;
  place->marker_type = MAP_DISPLAY_NONE;
  place->marker_points = NULL;
 
  gboolean show_outline = dt_conf_get_bool("plugins/map/show_outline");
  int max_outline_nodes = dt_conf_get_int("plugins/map/max_outline_nodes");
 
  /* handle the element attribute values */
  const gchar **aname = attribute_names;
  const gchar **avalue = attribute_values;
  if(*aname)
  {
    while(*aname)
    {
      if(strcmp(*aname, "display_name") == 0)
      {
        place->name = g_strdup(*avalue);
        if(!(place->name)) goto bail_out;
      }
      else if(strcmp(*aname, "lon") == 0)
        place->lon = g_strtod(*avalue, NULL);
      else if(strcmp(*aname, "lat") == 0)
        place->lat = g_strtod(*avalue, NULL);
      else if(strcmp(*aname, "boundingbox") == 0)
      {
        char *endptr;
        float lon1, lat1, lon2, lat2;
 
        lat1 = g_ascii_strtod(*avalue, &endptr);
        if(*endptr != ',') goto broken_bbox;
        endptr++;
 
        lat2 = g_ascii_strtod(endptr, &endptr);
        if(*endptr != ',') goto broken_bbox;
        endptr++;
 
        lon1 = g_ascii_strtod(endptr, &endptr);
        if(*endptr != ',') goto broken_bbox;
        endptr++;
 
        lon2 = g_ascii_strtod(endptr, &endptr);
        if(*endptr != '\0') goto broken_bbox;
 
        place->bbox.lon1 = lon1;
        place->bbox.lat1 = lat1;
        place->bbox.lon2 = lon2;
        place->bbox.lat2 = lat2;
broken_bbox:
        ;
      }
      // only use the first 'geotext' entry
      else if(show_outline &&
              strcmp(*aname, "geotext") == 0 &&
              place->marker_type == MAP_DISPLAY_NONE)
      {
        if(g_str_has_prefix(*avalue, "POINT"))
        {
          char *endptr;
          float lon = g_ascii_strtod(*avalue + strlen("POINT("), &endptr);
          float lat = g_ascii_strtod(endptr, &endptr);
          if(*endptr == ')')
          {
            place->marker_type = MAP_DISPLAY_POINT;
            dt_geo_map_display_point_t *p = malloc(sizeof(dt_geo_map_display_point_t));
            p->lon = lon;
            p->lat = lat;
            place->marker_points = g_list_append(place->marker_points, p);
          }
        }
        else if(g_str_has_prefix(*avalue, "LINESTRING")
#ifdef HAVE_OSMGPSMAP_110_OR_NEWER
                || g_str_has_prefix(*avalue, "POLYGON")
                || g_str_has_prefix(*avalue, "MULTIPOLYGON")
#endif
               )
        {
          gboolean error = FALSE;
          const char *startptr = *avalue;
          char *endptr;
          while(startptr && (*startptr == ' ' || *startptr == '(' || (*startptr >= 'A' && *startptr <= 'Z')))
            startptr++;
 
          int i = 0;
          while(1)
          {
            float lon = g_ascii_strtod(startptr, &endptr);
            float lat = g_ascii_strtod(endptr, &endptr);
 
            if(*endptr == ')') // TODO: support holes in POLYGON and several forms in MULTIPOLYGON?
            {
              // doesn't really support MULTIPOLYGON, just keeps the biggect one
              const int old_mp = g_list_length(lib->marker_points);
              const int new_mp = g_list_length(place->marker_points);
              if(g_str_has_prefix(endptr, ")),((") || g_str_has_prefix(endptr, "),("))
              {
                if(new_mp > old_mp)
                {
                  g_list_free_full(lib->marker_points, dt_free_gpointer);
                  lib->marker_points = place->marker_points;
                }
                else
                  g_list_free_full(place->marker_points, dt_free_gpointer);
                place->marker_points = NULL;
                startptr = endptr + (g_str_has_prefix(endptr, ")),((") ? 5 : 3);
                continue;
              }
              else
              {
                if(new_mp > old_mp)
                {
                  g_list_free_full(lib->marker_points, dt_free_gpointer);
                  lib->marker_points = NULL;
                }
                else
                {
                  g_list_free_full(place->marker_points, dt_free_gpointer);
                  place->marker_points = lib->marker_points;
                }
                lib->marker_points = NULL;
                break;
              }
            }
            if(*endptr != ',' || i > max_outline_nodes) // don't go too big for speed reasons
            {
              error = TRUE;
              break;
            }
            dt_geo_map_display_point_t *p = malloc(sizeof(dt_geo_map_display_point_t));
            p->lon = lon;
            p->lat = lat;
            place->marker_points = g_list_prepend(place->marker_points, p);
            startptr = endptr+1;
            i++;
          }
          place->marker_points = g_list_reverse(place->marker_points);
          if(error)
          {
            g_list_free_full(place->marker_points, dt_free_gpointer);
            place->marker_points = NULL;
          }
          else
          {
            place->marker_type = g_str_has_prefix(*avalue, "LINESTRING") ? MAP_DISPLAY_TRACK : MAP_DISPLAY_POLYGON;
          }
        }
        else
        {
          gchar *s = g_strndup(*avalue, 100);
          fprintf(stderr, "unsupported outline: %s%s\n", s, strlen(s) == strlen(*avalue) ? "" : " ...");
          dt_free(s);
        }
      }
      else if(strcmp(*aname, "type") == 0)
      {
 
        if(strcmp(*avalue, "village") == 0)
          place->type = LOCATION_TYPE_RESIDENTIAL;
        else if(strcmp(*avalue, "hamlet") == 0)
          place->type = LOCATION_TYPE_HAMLET;
        else if(strcmp(*avalue, "city") == 0)
          place->type = LOCATION_TYPE_CITY;
        else if(strcmp(*avalue, "administrative") == 0)
          place->type = LOCATION_TYPE_ADMINISTRATIVE;
        else if(strcmp(*avalue, "residental") == 0) // for backward compatibility
          place->type = LOCATION_TYPE_RESIDENTIAL;
        else if(strcmp(*avalue, "residential") == 0)
          place->type = LOCATION_TYPE_RESIDENTIAL;
      }
 
      aname++;
      avalue++;
    }
  }
 
  /* check if we got sane data */
  if(isnan(place->lon) || isnan(place->lat)) goto bail_out;
 
  /* add place to result list */
  lib->places = g_list_append(lib->places, place);
 
  return;
 
bail_out:
  dt_free(place->name);
  dt_free(place);
}
 
struct params_fixed_t
{
  int32_t relevance;
  _lib_location_type_t type;
  float lon;
  float lat;
  dt_map_box_t bbox;
  dt_geo_map_display_t marker_type;
} __attribute__((packed));
 
void *get_params(dt_lib_module_t *self, int *size)
{
  dt_lib_location_t *lib = (dt_lib_location_t *)self->data;
  _lib_location_result_t *location = lib->selected_location;
 
  // we have nothing to store when the user hasn't picked a search result
  if(IS_NULL_PTR(location)) return NULL;
 
  const size_t size_fixed = sizeof(struct params_fixed_t);
  const size_t size_name = strlen(location->name) + 1;
  const size_t size_points = 2 * sizeof(float) * g_list_length(location->marker_points);
  const size_t size_total = size_fixed + size_name + size_points;
 
  void *params = malloc(size_total);
  struct params_fixed_t *params_fixed = (struct params_fixed_t *)params;
  params_fixed->relevance = location->relevance;
  params_fixed->type = location->type;
  params_fixed->lon = location->lon;
  params_fixed->lat = location->lat;
  params_fixed->bbox.lon1 = location->bbox.lon1;
  params_fixed->bbox.lat1 = location->bbox.lat1;
  params_fixed->bbox.lon2 = location->bbox.lon2;
  params_fixed->bbox.lat2 = location->bbox.lat2;
  params_fixed->marker_type = location->marker_type;
 
  memcpy((uint8_t *)params + size_fixed, location->name, size_name);
 
  float *points = (float *)((uint8_t *)params + size_fixed + size_name);
  for(GList *iter = location->marker_points; iter; iter = g_list_next(iter), points += 2)
  {
    dt_geo_map_display_point_t *point = (dt_geo_map_display_point_t *)iter->data;
    points[0] = point->lat;
    points[1] = point->lon;
  }
 
  *size = size_total;
  return params;
}
 
int set_params(dt_lib_module_t *self, const void *params, int size)
{
  dt_lib_location_t *lib = (dt_lib_location_t *)self->data;
 
  const size_t size_fixed = sizeof(struct params_fixed_t);
 
  if(size < size_fixed) return 1;
 
  const struct params_fixed_t *params_fixed = (struct params_fixed_t *)params;
  const char *name = (char *)((uint8_t *)params + size_fixed);
  const size_t size_name = strlen(name) + 1;
 
  if(size_fixed + size_name > size) return 1;
 
  const size_t size_points = size - (size_fixed + size_name);
 
  if(size_points % 2 * sizeof(float) != 0) return 1;
 
  _lib_location_result_t *location = (_lib_location_result_t *)malloc(sizeof(_lib_location_result_t));
 
  location->relevance = params_fixed->relevance;
  location->type = params_fixed->type;
  location->lon = params_fixed->lon;
  location->lat = params_fixed->lat;
  location->bbox.lon1 = params_fixed->bbox.lon1;
  location->bbox.lat1 = params_fixed->bbox.lat1;
  location->bbox.lon2 = params_fixed->bbox.lon2;
  location->bbox.lat2 = params_fixed->bbox.lat2;
  location->marker_type = params_fixed->marker_type;
  location->name = g_strdup(name);
  location->marker_points = NULL;
 
  for(const float *points = (float *)((uint8_t *)params + size_fixed + size_name); (uint8_t *)points < (uint8_t *)params + size; points += 2)
  {
    dt_geo_map_display_point_t *p = (dt_geo_map_display_point_t *)malloc(sizeof(dt_geo_map_display_point_t));
    p->lat = points[0];
    p->lon = points[1];
    location->marker_points = g_list_prepend(location->marker_points, p);
  }
  location->marker_points = g_list_reverse(location->marker_points);
 
  clear_search(lib);
  lib->places = g_list_append(lib->places, location);
  gtk_entry_set_text(lib->search, "");
  _lib_location_search_finish(self);
 
  return 0;
}
 
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// modelines: These editor modelines have been set for all relevant files by tools/update_modelines.py
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