ArrowRenderer.h

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#ifndef ARROWRENDERER_H_
#define ARROWRENDERER_H_

#include <QColor>
#include <QBrush>
#include <QPainter>
#include "ARender.h"

class ArrowRenderer : public ARender {
        public:
                ArrowRenderer(const Data& aData) : ARender(aData),
                                                   mArrowDistance(0.4), 
                                                   mArrowSize(0.4),
                                                   mScaleMax(0),
                                                   mScaleMin(0),
                                                   mScaleArrowIndex(0),
                                                   mScaleArrows(false),
                                                   mArrowBrush(Qt::black) {}

                virtual void render(QPixmap* pixmap);

                void setArrowDistance(float dist) { mArrowDistance = dist; }
                void setArrowSize(float size) { mArrowSize = size; }

                void setScaleArrowIndex(int newIndex){
                        mScaleArrowIndex = newIndex;
                        std::pair<float, float> range = mData.getDataRange(newIndex);
                        mScaleMin = range.first;
                        mScaleMax = range.second;       
                }
                
                void setScaleArrows(bool scaleArrows){mScaleArrows = scaleArrows;}
                
                void setScaleMax(float max){mScaleMax = max;}
                void setScaleMin(float min){mScaleMin = min;}
                
                void setArrowBrush(QBrush brush) { mArrowBrush = brush; }

                static void drawArrow(QPainter& painter, const QBrush& brush, float arrowSize);
        private:
                void drawArrow(QPainter& painter, float x, float y) const;

                float mArrowDistance;
                float mArrowSize;

                float mScaleMax;
                float mScaleMin;

                int mScaleArrowIndex;
                bool mScaleArrows;
                
                QBrush mArrowBrush;
};

#endif

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