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Added the DiveProfileItem that uses the DiveProfileModel to diplay data.

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I've used the paint() method on it ( even if it's not necessary
on a QGraphicsView ) to reduce absurdely the number of items that are
inserted on the QGraphicsScene ( each small line of the profile should
be an item if it was not for this, it's like that on the old profile. )
and thus reducing the memory consumption, speed and so on.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Tomaz Canabrava 2014-01-14 17:17:17 -02:00 • committed by Dirk Hohndel
parent 7d5cf32501
commit 581faa598e
3 changed files with 145 additions and 2 deletions
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48
qt-ui/profile/diveprofileitem.h Normal file
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#ifndef DIVEPROFILEITEM_H
#define DIVEPROFILEITEM_H
#include <QObject>
#include <QGraphicsPolygonItem>
/* This is the Profile Item, it should be used for quite a lot of things
on the profile view. The usage should be pretty simple:
DiveProfileItem *profile = new DiveProfileItem();
profile->setVerticalAxis( profileYAxis );
profile->setHorizontalAxis( timeAxis );
profile->setModel( DiveDataModel );
profile->setHorizontalDataColumn( DiveDataModel::TIME );
profile->setVerticalDataColumn( DiveDataModel::DEPTH );
scene()->addItem(profile);
This is a generically item and should be used as a base for others, I think...
*/
class DiveCartesianAxis;
class QAbstractTableModel;
class DiveProfileItem : public QObject, public QGraphicsPolygonItem{
Q_OBJECT
Q_PROPERTY(QPointF pos WRITE setPos READ pos)
Q_PROPERTY(qreal x WRITE setX READ x)
Q_PROPERTY(qreal y WRITE setY READ y)
public:
DiveProfileItem();
void setVerticalAxis(DiveCartesianAxis *vertical);
void setHorizontalAxis(DiveCartesianAxis *horizontal);
void setModel(QAbstractTableModel *model);
void setHorizontalDataColumn(int column);
void setVerticalDataColumn(int column);
virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = 0);
public slots:
void modelDataChanged();
private:
DiveCartesianAxis *hAxis;
DiveCartesianAxis *vAxis;
QAbstractTableModel *dataModel;
int hDataColumn;
int vDataColumn;
};
#endif