polygon.h

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#pragma once
 
#include <QMouseEvent>
#include <canvas/controls/canvas-control.h>
#include <QPoint>
 
 
namespace Controls {
 
    class Polygon : public CanvasControl {
        static constexpr unsigned int kDefaultNumSide = 5;
        static constexpr unsigned int kMinimumNumSide = 3;
    public:
        Polygon(Canvas *canvas) noexcept;
 
        bool mouseMoveEvent(QMouseEvent *e) override;
 
        bool mouseReleaseEvent(QMouseEvent *e) override;
 
        bool keyPressEvent(QKeyEvent *e) override;
 
        void paint(QPainter *painter) override;
 
        void exit() override;
 
        bool isActive() override;
 
        unsigned int getNumSide() const { return num_side_; }
        bool setNumSide(unsigned int numSide);
 
    private:
        unsigned int num_side_;
        QPointF initial_vertex_;
        QPointF center_;
        QPolygonF polygon_;
 
        void updateVertices(const QPointF &center, const QPointF &start_vertex);
    };
 
}