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97 lines
2.1 KiB
C++
97 lines
2.1 KiB
C++
#ifndef GRAPHITEM_H
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#define GRAPHITEM_H
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#include <QGraphicsObject>
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#include <QPen>
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#include "data/graph.h"
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#include "units.h"
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#include "graphicsscene.h"
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class GraphItem : public QObject, public GraphicsItem
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{
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Q_OBJECT
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public:
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struct SegmentTime
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{
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SegmentTime() : time(NAN) {}
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SegmentTime(const QDateTime &date, qreal time)
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: date(date), time(time) {}
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QDateTime date;
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qreal time;
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};
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GraphItem(const Graph &graph, GraphType type, int width,
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const QColor &color, Qt::PenStyle style, QGraphicsItem *parent = 0);
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virtual ~GraphItem() {}
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virtual ToolTip info() const = 0;
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QPainterPath shape() const {return _shape;}
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QRectF boundingRect() const {return _shape.boundingRect();}
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
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QWidget *widget);
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GraphType graphType() const {return _type;}
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const QRectF &bounds() const {return _bounds;}
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qreal max() const;
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qreal min() const;
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qreal avg() const;
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void setScale(qreal sx, qreal sy);
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void setGraphType(GraphType type);
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void setColor(const QColor &color);
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void setWidth(int width);
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void setUnits(Units units) {_units = units;}
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void updateStyle();
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GraphItem *secondaryGraph() const {return _secondaryGraph;}
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void setSecondaryGraph(GraphItem *graph) {_secondaryGraph = graph;}
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qreal yAtX(qreal x) const;
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qreal distanceAtTime(qreal time) const;
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qreal timeAtDistance(qreal distance) const;
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SegmentTime date(qreal x);
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void redraw();
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signals:
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void selected(bool);
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public slots:
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void hover(bool hover);
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protected:
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void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
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void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
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void mousePressEvent(QGraphicsSceneMouseEvent *event);
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Units _units;
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private:
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const GraphSegment *segment(qreal x, GraphType type) const;
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void updatePath();
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void updateShape();
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void updateBounds();
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void updateColor();
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const QColor &color() const;
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Graph _graph;
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QColor _color;
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GraphType _type;
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qreal _sx, _sy;
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QPainterPath _path;
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QPainterPath _shape;
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QRectF _bounds;
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QPen _pen;
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bool _time;
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GraphItem *_secondaryGraph;
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};
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#endif // GRAPHITEM_H
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