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#ifndef SCATTERPLOT_H
#define SCATTERPLOT_H
#include <vector>
#include <QtQuick>
#include <armadillo>
#include "colorscale.h"
#include "scale.h"
class QuadTree;
class Scatterplot
: public QQuickItem
{
Q_OBJECT
Q_PROPERTY(float glyphSize READ glyphSize WRITE setGlyphSize NOTIFY glyphSizeChanged)
public:
static const int PADDING = 20;
Scatterplot(QQuickItem *parent = 0);
arma::mat XY() const;
void setColorScale(const ColorScale *colorScale);
void setAutoScale(bool autoScale);
float glyphSize() const { return m_glyphSize; }
void setGlyphSize(float glyphSize);
void setDragEnabled(bool enabled) { m_dragEnabled = enabled; }
bool isDragEnabled() const { return m_dragEnabled; }
signals:
void xyChanged(const arma::mat &XY) const;
void xyInteractivelyChanged(const arma::mat &XY) const;
void colorDataChanged(const arma::vec &colorData) const;
void opacityDataChanged(const arma::vec &opacityData) const;
void selectionChanged(const std::vector<bool> &selection) const;
void selectionInteractivelyChanged(const std::vector<bool> &selection) const;
void itemBrushed(int item) const;
void itemInteractivelyBrushed(int item) const;
void scaleChanged(const LinearScale<float> &sx, const LinearScale<float> &sy) const;
void glyphSizeChanged(float glyphSize) const;
public slots:
void setXY(const arma::mat &xy);
void setColorData(const arma::vec &colorData);
void setOpacityData(const arma::vec &opacityData);
void setScale(const LinearScale<float> &sx, const LinearScale<float> &sy);
void setSelection(const std::vector<bool> &selection);
void brushItem(int item);
protected:
QSGNode *updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *);
void mousePressEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent *event);
void mouseReleaseEvent(QMouseEvent *event);
void hoverEnterEvent(QHoverEvent *event);
void hoverMoveEvent(QHoverEvent *event);
void hoverLeaveEvent(QHoverEvent *event);
private:
QSGNode *newSceneGraph();
QSGNode *newGlyphTree();
void applyManipulation();
void updateGlyphs(QSGNode *node);
void updateBrush(QSGNode *node);
// Data
arma::mat m_xy;
arma::vec m_colorData;
arma::vec m_opacityData;
// Visuals
float m_glyphSize;
const ColorScale *m_colorScale;
void autoScale();
bool m_autoScale;
LinearScale<float> m_sx, m_sy;
// Internal state
void interactiveSelection(bool mergeSelection);
std::vector<bool> m_selection;
bool m_anySelected;
int m_brushedItem;
enum State {
StateNone,
StateBrushing,
StateSelecting,
StateSelected,
StateMoving
} m_interactionState;
bool m_dragEnabled;
QPointF m_dragOriginPos, m_dragCurrentPos;
bool m_shouldUpdateGeometry, m_shouldUpdateMaterials;
QuadTree *m_quadtree;
void updateQuadTree();
};
#endif // SCATTERPLOT_H
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