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ff536e98fc
Up to now, when the user changed the visibility of chart features (legend, quartiles, labels, etc.) the whole chart was replot. Instead, only change the visibility status of these items. After all, this modularity is one of the things the conversion to QSG was all about. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
68 lines
1.9 KiB
C++
68 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 "statshelper.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);
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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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ChartItemPtr<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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ChartItemPtr<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);
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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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ChartItemPtr<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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