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2480d3b7e0
All series are converted to QSG. Thus, the pointer to the QGraphicsView can be removed from the common base class. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
// SPDX-License-Identifier: GPL-2.0
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// A pie chart series, which displays percentual information.
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#ifndef PIE_SERIES_H
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#define PIE_SERIES_H
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#include "statsseries.h"
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#include <memory>
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#include <vector>
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#include <QString>
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struct InformationBox;
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struct ChartPieItem;
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struct ChartTextItem;
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class QRectF;
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class PieSeries : public StatsSeries {
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public:
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// The pie series is initialized with (name, count) pairs.
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// If keepOrder is false, bins will be sorted by size, otherwise the sorting
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// of the shown bins will be retained. Small bins are omitted for clarity.
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PieSeries(StatsView &view, StatsAxis *xAxis, StatsAxis *yAxis, const QString &categoryName,
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const std::vector<std::pair<QString, int>> &data, bool keepOrder, bool labels);
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~PieSeries();
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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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std::vector<QString> binNames();
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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) const;
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std::unique_ptr<ChartPieItem> item;
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QString categoryName;
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std::vector<QString> makeInfo(int idx) const;
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struct Item {
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std::unique_ptr<ChartTextItem> innerLabel, outerLabel;
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QString name;
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double angleFrom, angleTo; // In fraction of total
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int count;
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QPointF innerLabelPos, outerLabelPos; // With respect to a (-1, -1)-(1, 1) rectangle.
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Item(StatsView &view, const QString &name, int from, int count, int totalCount,
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int bin_nr, int numBins, bool labels);
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void updatePositions(const QPointF ¢er, double radius);
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void highlight(ChartPieItem &item, int bin_nr, bool highlight, int numBins);
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};
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std::vector<Item> items;
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int totalCount;
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// Entries in the "other" group. If empty, there is no "other" group.
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struct OtherItem {
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QString name;
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int count;
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};
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std::vector<OtherItem> other;
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std::unique_ptr<InformationBox> information;
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QPointF center; // center of drawing area
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double radius; // radius of pie
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int highlighted;
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};
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#endif
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