GPXSee/src/map/map.h

#ifndef MAP_H
#define MAP_H

#include <QObject>
#include <QString>
#include <QRectF>
#include <QColor>

class QPainter;
class Coordinates;
class RectC;

class Map : public QObject
{
	Q_OBJECT

public:
	Map(QObject *parent = 0) : QObject(parent) {_backgroundColor = Qt::white;}

	virtual const QString &name() const = 0;

	virtual QRectF bounds() const = 0;
	virtual qreal resolution(const QRectF &rect) const = 0;

	virtual int zoom() const = 0;
	virtual int zoomFit(const QSize &size, const RectC &br) = 0;
	virtual int zoomIn() = 0;
	virtual int zoomOut() = 0;

	virtual QPointF ll2xy(const Coordinates &c) = 0;
	virtual Coordinates xy2ll(const QPointF &p) = 0;

	virtual void draw(QPainter *painter, const QRectF &rect) = 0;

	virtual void setBlockingMode(bool block) {Q_UNUSED(block);}
	virtual void clearCache() {}
	virtual void load() {}
	virtual void unload() {}

	void setBackgroundColor(const QColor &color) {_backgroundColor = color;}

	virtual bool isValid() const {return true;}
	virtual QString errorString() const {return QString();}

signals:
	void loaded();

protected:
	QColor _backgroundColor;
};

#endif // MAP_H