add Map inverse geocoding

add minimum/maximum to ScrollSpinBox

libs/map/osm_geocoding.h

@@ -0,0 +1,84 @@
+/*
+    QAD - Qt ADvanced
+
+	Ivan Pelipenko peri4ko@yandex.ru
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef osm_geocoding_h
+#define osm_geocoding_h
+
+#include "qad_map_export.h"
+
+#include <QGeoCoordinate>
+#include <QJsonDocument>
+#include <QPointF>
+
+class QNetworkReply;
+class QNetworkAccessManager;
+
+
+class QAD_MAP_EXPORT OSMGeocodingResult: public QObject {
+	Q_OBJECT
+	friend class OSMGeocoding;
+
+public:
+	void abort();
+
+	bool isEmpty() const { return res.isEmpty(); }
+	QJsonDocument result() const { return res; }
+	QString displayName() const;
+	QPointF resultCoordinate() const;
+
+private:
+	OSMGeocodingResult(QObject * parent);
+	~OSMGeocodingResult();
+
+	void requestDone();
+	QJsonDocument res;
+	QNetworkReply * reply = nullptr;
+
+signals:
+	void ready();
+};
+
+
+class QAD_MAP_EXPORT OSMGeocoding: public QObject {
+	Q_OBJECT
+
+public:
+	static OSMGeocodingResult * queue(QPointF coord);
+	static OSMGeocodingResult * queue(QGeoCoordinate coord) { return queue(QPointF(coord.latitude(), coord.longitude())); }
+
+private:
+	explicit OSMGeocoding();
+	~OSMGeocoding();
+
+	static OSMGeocoding * instance();
+
+	OSMGeocodingResult * reverseCoding(QPointF coord);
+
+	QNetworkAccessManager * nam = nullptr;
+	QString provider;
+
+public slots:
+
+private slots:
+
+signals:
+};
+
+
+#endif