maptoolzoom.h

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#ifndef MAPTOOLZOOM_H
#define MAPTOOLZOOM_H
 
#include "map/tools/maptool.h"
 
#include <QPoint>
#include <QRect>
 
class OpenSWMMVisMapToolZoom : public OpenSWMMVisMapTool
{
    Q_OBJECT
    Q_PROPERTY(double zoomFactor READ zoomFactor WRITE setZoomFactor NOTIFY zoomFactorChanged)
    Q_PROPERTY(bool zoomInMode READ zoomInMode WRITE setZoomInMode)
 
public:
 
    explicit OpenSWMMVisMapToolZoom(MapCanvas *canvas, QObject *parent = nullptr);
 
    [[nodiscard]] QCursor cursor() const override;
 
    [[nodiscard]] double zoomFactor() const;
    void setZoomFactor(double factor);
 
    [[nodiscard]] bool zoomInMode() const;
    void setZoomInMode(bool zoomIn);
 
    void activate()   override;
    void deactivate() override;
 
    void mousePressEvent(QMouseEvent *event)   override;
    void mouseMoveEvent(QMouseEvent *event)    override;
    void mouseReleaseEvent(QMouseEvent *event) override;
    void wheelEvent(QWheelEvent *event)        override;
 
    void paint(QPainter *painter,
               const MapExtent &canvasExtent,
               const SpatialReferenceSystem *canvasSRS) override;
 
signals:
    void zoomFactorChanged(double factor);
 
private:
    bool   m_dragging      = false;
    bool   m_zoomIn        = true;
    bool   m_zoomInDefault = true;
    QPoint m_startPixel;
    QPoint m_currentPixel;
    double m_zoomFactor = 2.0;
};
 
#endif // MAPTOOLZOOM_H