subsurface/stats/statsseries.h
Berthold Stoeger e38b78b2aa statistics: select multiple dives in scatter-plot by shift-clicking
Somewhat improve selection mechanics in the scatter-plot by
allowing additional selections with shift-clicking. When the
dives under the mouse are already selected, then deselect them.
This appears to be a rather common UI idiom in desktop
applications.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-02-13 13:02:54 -08:00

29 lines
936 B
C++

// SPDX-License-Identifier: GPL-2.0
// Base class for all series. Defines a small virtual interface
// concerning highlighting of series items.
#ifndef STATS_SERIES_H
#define STATS_SERIES_H
#include <QPointF>
class StatsAxis;
class StatsView;
struct dive;
class StatsSeries {
public:
StatsSeries(StatsView &view, StatsAxis *xAxis, StatsAxis *yAxis);
virtual ~StatsSeries();
virtual void updatePositions() = 0; // Called if chart geometry changes.
virtual bool hover(QPointF pos) = 0; // Called on mouse movement. Return true if an item of this series is highlighted.
virtual void unhighlight() = 0; // Unhighlight any highlighted item.
virtual void selectItemsUnderMouse(const QPointF &pos, bool shiftPressed) = 0;
virtual void divesSelected(const QVector<dive *> &dives);
protected:
StatsView &view;
StatsAxis *xAxis, *yAxis; // May be zero for charts without axes (pie charts).
QPointF toScreen(QPointF p);
};
#endif