HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Files · examples/charts/openglseries/datasource.h

Accelerating lineseries with OpenGL...

Accelerating lineseries with OpenGL Added support for QAbstractSeries::useOpenGL property. When true, the series in question is drawn on a separate offscreen buffer using OpenGL and then superimposed on the chart. Currently this property is only supported for line and scatter series. Change-Id: I174fec541f9f3c23464270c1fe08f824af16a0fb Reviewed-by: Titta Heikkala <titta.heikkala@theqtcompany.com> Reviewed-by: Tomi Korpipää <tomi.korpipaa@theqtcompany.com>

Miikka Heikkinen - - Load All Authors

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      /****************************************************************************

      **

      ** Copyright (C) 2015 The Qt Company Ltd

      ** All rights reserved.

      ** For any questions to The Qt Company, please use contact form at http://qt.io

      **

      ** This file is part of the Qt Charts module.

      **

      ** Licensees holding valid commercial license for Qt may use this file in

      ** accordance with the Qt License Agreement provided with the Software

      ** or, alternatively, in accordance with the terms contained in a written

      ** agreement between you and The Qt Company.

      **

      ** If you have questions regarding the use of this file, please use

      ** contact form at http://qt.io

      **

      ****************************************************************************/

      #ifndef DATASOURCE_H

      #define DATASOURCE_H

      #include <QtCore/QObject>

      #include <QtCharts/QXYSeries>

      #include <QtWidgets/QLabel>

      #include <QtCore/QElapsedTimer>

      #include <QtCore/QTimer>

      QT_CHARTS_USE_NAMESPACE

      class DataSource : public QObject

      {

          Q_OBJECT

      public:

          explicit DataSource(QObject *parent = 0);

          void startUpdates(const QList<QXYSeries *> &seriesList, QLabel *fpsLabel);

      public slots:

          void generateData(int seriesCount, int rowCount, int colCount);

          void update(QAbstractSeries *series, int seriesIndex);

          void handleSceneChanged();

          void updateAllSeries();

      private:

          QVector<QVector<QVector<QPointF> > > m_data;

          int m_index;

          QList<QXYSeries *> m_seriesList;

          QLabel *m_fpsLabel;

          QElapsedTimer m_fpsTimer;

          QTimer m_dataUpdater;

      };

      #endif // DATASOURCE_H

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				/****************************************************************************
				**
				** Copyright (C) 2015 The Qt Company Ltd
				** All rights reserved.
				** For any questions to The Qt Company, please use contact form at http://qt.io
				**
				** This file is part of the Qt Charts module.
				**
				** Licensees holding valid commercial license for Qt may use this file in
				** accordance with the Qt License Agreement provided with the Software
				** or, alternatively, in accordance with the terms contained in a written
				** agreement between you and The Qt Company.
				**
				** If you have questions regarding the use of this file, please use
				** contact form at http://qt.io
				**
				****************************************************************************/

				#ifndef DATASOURCE_H
				#define DATASOURCE_H

				#include <QtCore/QObject>
				#include <QtCharts/QXYSeries>
				#include <QtWidgets/QLabel>
				#include <QtCore/QElapsedTimer>
				#include <QtCore/QTimer>

				QT_CHARTS_USE_NAMESPACE

				class DataSource : public QObject
				{
				Q_OBJECT
				public:
				explicit DataSource(QObject *parent = 0);

				void startUpdates(const QList<QXYSeries > &seriesList, QLabel fpsLabel);

				public slots:
				void generateData(int seriesCount, int rowCount, int colCount);
				void update(QAbstractSeries *series, int seriesIndex);
				void handleSceneChanged();
				void updateAllSeries();

				private:
				QVector<QVector<QVector<QPointF> > > m_data;
				int m_index;
				QList<QXYSeries *> m_seriesList;
				QLabel *m_fpsLabel;
				QElapsedTimer m_fpsTimer;
				QTimer m_dataUpdater;
				};

				#endif // DATASOURCE_H