subsurface/profile-widget/ruleritem.h
Berthold Stoeger ed83f6ce32 profile: only keep pointer to plot_info in ruler objects
Now this one was strange:

The ruler items keep a copy of the plot_info struct. However,
only a shallow copy is made (the actual plot data is not copied).
This means that the data is only valid as long as the source
plot_info is valid. But if that is guaranteed, we simply can
keep a pointer instead of the full object.

I wonder if it wouldn't be better still to keep a pointer to
the profile and query that for the plot info?

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2022-03-13 15:08:01 -07:00

60 lines
1.4 KiB
C++

// SPDX-License-Identifier: GPL-2.0
#ifndef RULERITEM_H
#define RULERITEM_H
#include <QObject>
#include <QGraphicsEllipseItem>
#include <QGraphicsObject>
#include "profile-widget/divecartesianaxis.h"
struct plot_data;
struct plot_info;
class RulerItem2;
class RulerNodeItem2 : public QObject, public QGraphicsEllipseItem {
Q_OBJECT
friend class RulerItem2;
public:
explicit RulerNodeItem2();
void setRuler(RulerItem2 *r);
void setPlotInfo(const struct plot_info &info);
void recalculate();
private:
void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
const struct plot_info *pInfo;
int idx;
RulerItem2 *ruler;
DiveCartesianAxis *timeAxis;
DiveCartesianAxis *depthAxis;
};
class RulerItem2 : public QObject, public QGraphicsLineItem {
Q_OBJECT
public:
explicit RulerItem2();
void recalculate();
void setPlotInfo(const struct dive *d, const struct plot_info &pInfo);
RulerNodeItem2 *sourceNode() const;
RulerNodeItem2 *destNode() const;
void setAxis(DiveCartesianAxis *time, DiveCartesianAxis *depth);
void setVisible(bool visible);
public
slots:
void settingsChanged(bool toggled);
private:
const struct dive *dive;
const struct plot_info *pInfo;
QPointF startPoint, endPoint;
RulerNodeItem2 *source, *dest;
QString text;
DiveCartesianAxis *timeAxis;
DiveCartesianAxis *depthAxis;
QGraphicsRectItem *textItemBack;
QGraphicsSimpleTextItem *textItem;
};
#endif