#ifndef __MAGNIFYING_GLASS #define __MAGNIFYING_GLASS #include #include #include #include class MagnifyingGlass : public QLabel { Q_OBJECT private: float zoomLevel; void setup(const QSize &size); void keyPressEvent(QKeyEvent *event) override; public: MagnifyingGlass(int width, int height, QWidget *parent); MagnifyingGlass(const QSize &size, QWidget *parent); void mouseMoveEvent(QMouseEvent *event) override; public slots: void updateImage(int x, int y); void updateImage(); void wheelEvent(QWheelEvent *event) override; void zoomIn(); void zoomOut(); void sizeUp(); void sizeDown(); void heightUp(); void heightDown(); void widthUp(); void widthDown(); }; #endif