##// 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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qhbarmodelmapper.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 QHBARMODELMAPPER_H
#define QHBARMODELMAPPER_H
#include <QBarModelMapper>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
class QTCOMMERCIALCHART_EXPORT QHBarModelMapper : 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 firstBarSetRow READ firstBarSetRow WRITE setFirstBarSetRow NOTIFY firstBarSetRowChanged)
Q_PROPERTY(int lastBarSetRow READ lastBarSetRow WRITE setLastBarSetRow NOTIFY lastBarSetRowChanged)
Q_PROPERTY(int firstColumn READ firstColumn WRITE setFirstColumn NOTIFY firstColumnChanged)
Q_PROPERTY(int columnCount READ columnCount WRITE setColumnCount NOTIFY columnCountChanged)
public:
explicit QHBarModelMapper(QObject *parent = 0);
QAbstractItemModel* model() const;
void setModel(QAbstractItemModel *model);
QAbstractBarSeries* series() const;
void setSeries(QAbstractBarSeries *series);
int firstBarSetRow() const;
void setFirstBarSetRow(int firstBarSetRow);
int lastBarSetRow() const;
void setLastBarSetRow(int lastBarSetRow);
int firstColumn() const;
void setFirstColumn(int firstColumn);
int columnCount() const;
void setColumnCount(int columnCount);
Q_SIGNALS:
void seriesReplaced();
void modelReplaced();
void firstBarSetRowChanged();
void lastBarSetRowChanged();
void firstColumnChanged();
void columnCountChanged();
};
QTCOMMERCIALCHART_END_NAMESPACE
#endif // QHBARMODELMAPPER_H