SHPFileHelper.h

/****************************************************************************
 *
 * (c) 2009-2020 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
 *
 * QGroundControl is licensed according to the terms in the file
 * COPYING.md in the root of the source code directory.
 *
 ****************************************************************************/

#pragma once

#include <QObject>
#include <QList>
#include <QGeoCoordinate>
#include <QScopedPointer>

#include "ShapeFileHelper.h"

#include "shapefil.h"

/// The QGCMapPolygon class provides a polygon which can be displayed on a map using a map visuals control.
/// It maintains a representation of the polygon on QVariantList and QmlObjectListModel format.
class SHPFileHelper : public QObject
{
    Q_OBJECT

public:
    static ShapeFileHelper::ShapeType determineShapeType(const QString& shpFile, QString& errorString);
    static bool loadPolygonFromFile(const QString& shpFile, QList<QGeoCoordinate>& vertices, QString& errorString);

private:
    static bool         _validateSHPFiles(const QString& shpFile, int* utmZone, bool* utmSouthernHemisphere, QString& errorString);
    static SHPHandle    _loadShape(const QString& shpFile, int* utmZone, bool* utmSouthernHemisphere, QString& errorString);

    static const char* _errorPrefix;
};