PColourWheel.h

//==============================================================================
// File:        PColourWheel.h
//
// Copyright (c) 2017, Phil Harvey, Queen's University
//==============================================================================
#ifndef __PColourWheel_h__
#define __PColourWheel_h__

#include "PImageCanvas.h"


class PColourWheel : public PImageCanvas {
public:
    PColourWheel(PImageWindow *owner, Widget canvas=0, int size=100);
    virtual ~PColourWheel();
    
    virtual void    DrawSelf();
    virtual void    AfterDrawing();
    virtual void    HandleEvents(XEvent *event);
    virtual void    Listen(int message, void *dataPt);
    
    void            SetIntensity(int val, int fastAnimate=0);
    void            AnimateDone();

    void            SetColourRGB(int *col3);
    void            GetColourRGB(int *col3);
    
    int             GetIntensity()  { return mIntensity; }

private:
    void            SetCursorPos(int x, int y);
    void            CursorMoved();
    void            DrawTheWheel();
    
    void            TestColours();
    void            AllocColours();
    void            FreeColours();
    
    Pixel         * mColours;
    char          * mAllocFlags;
    int             mIntensity;
    int             mCurX, mCurY;
    int             mWheelSize;
    int             mColourType;
    float           mMaxColour[3];
    XImage        * mImage;
    int             mFirstTry;
    int             mDelayedUpdate;
};

#endif // __PColourWheel_h__