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#ifndef HISTOGRAMVIEW_H
#define HISTOGRAMVIEW_H
#include "graphview.h"
/**
* Histogram graph view.
*
* When the view is zoomed such that there is more than one item occupying
* a single pixel the one with the highest value will be displayed.
*/
class HistogramView : public GraphView {
public:
HistogramView(QWidget* parent);
void setDataProvider(GraphDataProvider* data);
void setSelectionState(SelectionState* state);
/* Gradient colours for selected and unselected items */
void setSelectedGradient(const QLinearGradient& gradient);
void setUnelectedGradient(const QLinearGradient& gradient);
virtual void mouseMoveEvent(QMouseEvent *e);
virtual void mouseDoubleClickEvent(QMouseEvent *e);
virtual void update();
virtual void resizeEvent(QResizeEvent *e);
virtual void paintEvent(QPaintEvent *e);
protected:
qint64 itemAtPosition(QPoint pos);
qint64 valueAtPosition(QPoint pos);
protected:
QLinearGradient m_gradientSelected;
QLinearGradient m_gradientUnselected;
GraphDataProvider* m_data;
};
#endif
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