##// END OF EJS Templates
Added a new QXYSeries::replace override for performance reasons....
Added a new QXYSeries::replace override for performance reasons. Also added a QML demo application for oscilloscope use case. Oscilloscope use case was selected, because it involves a lot of data and has a strict requirements for performance. It revealed performance issues in data handling in QXYSeries, painting of QLineSeries and updating data in a model.

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qvbarmodelmapper.h
70 lines | 2.3 KiB | text/x-c | CLexer
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QVBARMODELMAPPER_H
#define QVBARMODELMAPPER_H
#include <QBarModelMapper>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
class QTCOMMERCIALCHART_EXPORT QVBarModelMapper : public QBarModelMapper
{
Q_OBJECT
Q_PROPERTY(QAbstractBarSeries *series READ series WRITE setSeries NOTIFY seriesReplaced)
Q_PROPERTY(QAbstractItemModel *model READ model WRITE setModel NOTIFY modelReplaced)
Q_PROPERTY(int firstBarSetColumn READ firstBarSetColumn WRITE setFirstBarSetColumn NOTIFY firstBarSetColumnChanged)
Q_PROPERTY(int lastBarSetColumn READ lastBarSetColumn WRITE setLastBarSetColumn NOTIFY lastBarSetColumnChanged)
Q_PROPERTY(int firstRow READ firstRow WRITE setFirstRow NOTIFY firstRowChanged)
Q_PROPERTY(int rowCount READ rowCount WRITE setRowCount NOTIFY rowCountChanged)
public:
explicit QVBarModelMapper(QObject *parent = 0);
QAbstractItemModel* model() const;
void setModel(QAbstractItemModel *model);
QAbstractBarSeries* series() const;
void setSeries(QAbstractBarSeries *series);
int firstBarSetColumn() const;
void setFirstBarSetColumn(int firstBarSetColumn);
int lastBarSetColumn() const;
void setLastBarSetColumn(int lastBarSetColumn);
int firstRow() const;
void setFirstRow(int firstRow);
int rowCount() const;
void setRowCount(int rowCount);
Q_SIGNALS:
void seriesReplaced();
void modelReplaced();
void firstBarSetColumnChanged();
void lastBarSetColumnChanged();
void firstRowChanged();
void rowCountChanged();
};
QTCOMMERCIALCHART_END_NAMESPACE
#endif // QVBARMODELMAPPER_H