Add a preview parameter to ag_chart_new_from_db_save()

src/ag-chart.c

@@ -1223,7 +1223,9 @@ AgChart *ag_chart_load_from_placidus_file(GFile  *file,
 }
 
 AgChart *
-ag_chart_new_from_db_save(AgDbChartSave *save_data, GError **err)
+ag_chart_new_from_db_save(AgDbChartSave *save_data,
+                          gboolean preview,
+                          GError **err)
 {
     GsweTimestamp   *timestamp;
     gchar           *house_system_enum_name;
@@ -1250,6 +1252,15 @@ ag_chart_new_from_db_save(AgDbChartSave *save_data, GError **err)
             save_data->timezone
         );
 
+    if (preview) {
+        chart = ag_chart_new_preview(
+                timestamp,
+                save_data->longitude,
+                save_data->latitude,
+                save_data->altitude,
+                house_system
+            );
+    } else {
         chart = ag_chart_new_full(
                 timestamp,
                 save_data->longitude,
@@ -1257,6 +1268,7 @@ ag_chart_new_from_db_save(AgDbChartSave *save_data, GError **err)
                 save_data->altitude,
                 house_system
             );
+    }
 
     ag_chart_set_name(chart, save_data->name);
     ag_chart_set_country(chart, save_data->country);

src/ag-chart.h

@@ -91,7 +91,9 @@ AgChart *ag_chart_load_from_agc(GFile  *file,
 AgChart *ag_chart_load_from_placidus_file(GFile  *file,
                                           GError **err);
 
-AgChart *ag_chart_new_from_db_save(AgDbChartSave *save_data, GError **err);
+AgChart *ag_chart_new_from_db_save(AgDbChartSave *save_data,
+                                   gboolean      preview,
+                                   GError        **err);
 
 void ag_chart_save_to_file(AgChart *chart,
                            GFile   *file,

src/ag-window.c

@@ -1967,6 +1967,7 @@ ag_window_list_item_activated_cb(AgIconView        *icon_view,
 
     if ((priv->chart = ag_chart_new_from_db_save(
                  priv->saved_data,
+                 FALSE,
                  &err
             )) == NULL) {
         ag_app_message_dialog(