add Map inverse geocoding

add minimum/maximum to ScrollSpinBox

libs/map/osm_geocoding.cpp

@@ -0,0 +1,92 @@
+#include "osm_geocoding.h"
+
+#include <QJsonObject>
+#include <QJsonValue>
+#include <QLocale>
+#include <QNetworkAccessManager>
+#include <QNetworkReply>
+#include <QNetworkRequest>
+
+
+OSMGeocodingResult::OSMGeocodingResult(QObject * parent): QObject(parent) {}
+
+
+OSMGeocodingResult::~OSMGeocodingResult() {}
+
+
+void OSMGeocodingResult::abort() {
+	if (reply) {
+		reply->abort();
+		reply->deleteLater();
+		blockSignals(true);
+		deleteLater();
+		reply = nullptr;
+	}
+}
+
+
+QString OSMGeocodingResult::displayName() const {
+	return res.object().value("display_name").toString();
+}
+
+
+QPointF OSMGeocodingResult::resultCoordinate() const {
+	auto loc_c = QLocale::c();
+	return QPointF(loc_c.toDouble(res.object().value("lat").toString()), loc_c.toDouble(res.object().value("lng").toString()));
+}
+
+
+void OSMGeocodingResult::requestDone() {
+	emit ready();
+	deleteLater();
+}
+
+
+// OSMGeocoding
+
+OSMGeocoding::OSMGeocoding(): QObject() {
+	nam      = new QNetworkAccessManager();
+	provider = "https://nominatim.openstreetmap.org";
+	// https://nominatim.openstreetmap.org/reverse?lat=52.79870&lon=27.56572&format=json
+}
+
+
+OSMGeocoding::~OSMGeocoding() {
+	delete nam;
+}
+
+
+OSMGeocoding * OSMGeocoding::instance() {
+	static OSMGeocoding ret;
+	return &ret;
+}
+
+
+OSMGeocodingResult * OSMGeocoding::queue(QPointF coord) {
+	return instance()->reverseCoding(coord);
+}
+
+
+OSMGeocodingResult * OSMGeocoding::reverseCoding(QPointF coord) {
+	auto loc_c = QLocale::c();
+	QNetworkRequest req(
+		provider +
+		QString("/reverse?lat=%1&lon=%2&format=json").arg(loc_c.toString(coord.x(), 'f', 8)).arg(loc_c.toString(coord.y(), 'f', 8)));
+	req.setHeader(QNetworkRequest::UserAgentHeader, "Qt/5");
+	req.setRawHeader("Accept-Language", (QLocale().name() + "," + QLocale().bcp47Name()).toLatin1());
+	auto * r = nam->get(req);
+	if (!r) return nullptr;
+	OSMGeocodingResult * ret = new OSMGeocodingResult(nam);
+	ret->reply               = r;
+	connect(r, &QNetworkReply::finished, this, [r, ret]() {
+		r->deleteLater();
+		if (r->error() != QNetworkReply::NoError) {
+			qDebug() << "Error:" << r->error();
+		} else {
+			QByteArray data = r->readAll();
+			if (!data.isEmpty()) ret->res = QJsonDocument::fromJson(data);
+		}
+		ret->requestDone();
+	});
+	return ret;
+}

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

libs/map/pivariant_geoposition.cpp

@@ -1,6 +1,7 @@
 #include "pivariant_geoposition.h"
 
 #include "mapitemimage.h"
+#include "osm_geocoding.h"
 #include "piqt.h"
 #include "pivaluetree.h"
 #include "ui_pivariant_geoposition.h"
@@ -31,7 +32,18 @@ PIVariantEditors::GeoPosition::GeoPosition() {
 		item->setScale(0.333 * appScale(this));
 		item->setPosition(ui.map->center());
 		ui.map->addItem(item);
-		connect(ui.map, &MapView::mapClicked, this, [item](QPointF c) { item->setPosition(c); });
+		OSMGeocodingResult * gc_res = nullptr;
+		connect(ui.map, &MapView::mapClicked, this, [this, item, &gc_res, ui](QPointF c) {
+			item->setPosition(c);
+			if (gc_res) gc_res->abort();
+			gc_res = OSMGeocoding::queue(c);
+			ui.label->setText("-");
+			connect(gc_res, &OSMGeocodingResult::ready, this, [&gc_res, ui]() {
+				ui.label->setText(gc_res->displayName());
+				gc_res = nullptr;
+			});
+		});
+		ui.map->mapClicked(ui.map->center());
 		if (dlg.exec() != QDialog::Accepted) return;
 		PIGeoPosition gp({item->position().x(), item->position().y(), 0.}, PIGeoPosition::Geodetic);
 		setValue(PIVariant::fromValue(gp));

libs/map/pivariant_geoposition_map.ui

@@ -16,11 +16,27 @@
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <widget class="MapView" name="map">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Preferred" vsizetype="Expanding">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
      <property name="zoom">
       <double>15.000000000000000</double>
      </property>
     </widget>
    </item>
+   <item>
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>-</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
    <item>
     <widget class="QDialogButtonBox" name="buttonBox">
      <property name="standardButtons">