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#ifndef SCATTERPLOT_H
#define SCATTERPLOT_H
#include <QtQuick>
#include <QSet>
#include <armadillo>
#include "colorscale.h"
#include "scale.h"
class Scatterplot
: public QQuickItem
{
Q_OBJECT
public:
Scatterplot(QQuickItem *parent = 0);
arma::mat XY() const;
void setColorScale(const ColorScale &colorScale);
void setXY(const arma::mat &xy, bool updateView);
void setColorData(const arma::vec &colorData, bool updateView);
void setOpacityData(const arma::vec &opacityData, bool updateView);
void setScale(const LinearScale<float> &sx, const LinearScale<float> &sy, bool updateView);
void setGlyphSize(float glyphSize, bool updateView);
void setAutoScale(bool autoScale);
Q_INVOKABLE bool saveToFile(const QUrl &url);
Q_INVOKABLE float glyphSize() const { return m_glyphSize; }
static const int PADDING = 20;
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 QSet<int> &selection) 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 setSelection(const QSet<int> &selection);
void setScale(const LinearScale<float> &sx, const LinearScale<float> &sy);
Q_INVOKABLE void setGlyphSize(float glyphSize);
protected:
QSGNode *updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *);
void mousePressEvent(QMouseEvent *event);
void mouseMoveEvent(QMouseEvent *event);
void mouseReleaseEvent(QMouseEvent *event);
private:
QSGNode *newSceneGraph();
QSGNode *newGlyphTree();
void applyManipulation();
void updateGlyphs(QSGNode *node);
// Data
arma::mat m_xy;
arma::vec m_colorData;
arma::vec m_opacityData;
// Visuals
float m_glyphSize;
ColorScale m_colorScale;
void autoScale();
bool m_autoScale;
LinearScale<float> m_sx, m_sy;
// Internal state
bool updateSelection(bool mergeSelection);
QSet<int> m_selectedGlyphs;
enum InteractionState {
INTERACTION_NONE,
INTERACTION_SELECTING,
INTERACTION_SELECTED,
INTERACTION_BEGIN_MOVING,
INTERACTION_MOVING
} m_currentInteractionState;
QPointF m_dragOriginPos, m_dragCurrentPos;
bool m_shouldUpdateGeometry, m_shouldUpdateMaterials;
};
#endif // SCATTERPLOT_H
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