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62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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// A small custom box plot series, which displays quartiles.
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// The QtCharts bar series were too inflexible with respect
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// to placement of the bars.
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#ifndef BOX_SERIES_H
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#define BOX_SERIES_H
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#include "statsseries.h"
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#include "statsvariables.h" // for StatsQuartiles
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#include <memory>
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#include <vector>
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#include <QGraphicsLineItem>
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#include <QGraphicsRectItem>
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class InformationBox;
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class BoxSeries : public StatsSeries {
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public:
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BoxSeries(QtCharts::QChart *chart, StatsAxis *xAxis, StatsAxis *yAxis,
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const QString &variable, const QString &unit, int decimals);
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~BoxSeries();
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void updatePositions() override;
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bool hover(QPointF pos) override;
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void unhighlight() override;
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// Note: this expects that all items are added with increasing pos
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// and that no bar is inside another bar, i.e. lowerBound and upperBound
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// are ordered identically.
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void append(double lowerBound, double upperBound, const StatsQuartiles &q, const QString &binName);
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private:
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// Get item under mouse pointer, or -1 if none
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int getItemUnderMouse(const QPointF &f);
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struct Item {
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QGraphicsRectItem box;
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QGraphicsLineItem topWhisker, bottomWhisker;
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QGraphicsLineItem topBar, bottomBar;
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QGraphicsLineItem center;
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QRectF bounding; // bounding box in screen coordinates
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~Item();
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double lowerBound, upperBound;
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StatsQuartiles q;
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QString binName;
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Item(QtCharts::QChart *chart, BoxSeries *series, double lowerBound, double upperBound, const StatsQuartiles &q, const QString &binName);
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void updatePosition(QtCharts::QChart *chart, BoxSeries *series);
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void highlight(bool highlight);
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};
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QString variable, unit;
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int decimals;
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std::vector<QString> formatInformation(const Item &item) const;
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std::unique_ptr<InformationBox> information;
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std::vector<std::unique_ptr<Item>> items;
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int highlighted; // -1: no item highlighted
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};
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#endif
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