/*
 * Copyright 2017 Julian Harnath <julian.harnath@rwth-aachen.de>
 * All rights reserved. Distributed under the terms of the MIT license.
 */
#ifndef BARBER_POLE_H
#define BARBER_POLE_H


#include <View.h>

#include <Polygon.h>


class BMessageRunner;


/*! Spinning barber pole progress indicator. Number and colors of the
    color stripes are configurable. By default, it will be 2 colors,
    chosen from the system color palette.
*/
class BarberPole : public BView {
public:
        enum {
                // Message codes
                kRefreshMessage = 0x1001
        };

public:
                                                                BarberPole(const char* name);
                                                                ~BarberPole();

        virtual void                            MessageReceived(BMessage* message);
        virtual void                            Draw(BRect updateRect);
        virtual void                            FrameResized(float width, float height);

        virtual BSize                           MinSize();

                        void                            Start();
                        void                            Stop();

                        void                            SetSpinSpeed(float speed);
                        void                            SetColors(const rgb_color* colors,
                                                                        uint32 numColors);

private:
                        void                            _Spin();
                        void                            _DrawSpin(BRect updateRect);
                        void                            _DrawNonSpin(BRect updateRect);
private:
                        bool                            fIsSpinning;
                        float                           fSpinSpeed;
                        const rgb_color*        fColors;
                        uint32                          fNumColors;

                        float                           fScrollOffset;
                        BPolygon                        fStripe;
                        float                           fStripeWidth;
                        uint32                          fNumStripes;
};


#endif // BARBER_POLE_H