/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
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** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
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** modification, are permitted provided that the following conditions are
** met:
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**     notice, this list of conditions and the following disclaimer.
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**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
**     of its contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
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****************************************************************************/

#include "q3dbars.h"

#include <QGuiApplication>
#include <QTimer>
#include <QDebug>

class ChartDataGenerator : public QObject
{
public:
    explicit ChartDataGenerator(QtDataVis3D::Q3DBars *barchart);
    ~ChartDataGenerator();

    void addBars();
    void changeStyle();
    void start();

private:
    QtDataVis3D::Q3DBars *m_chart;
    QTimer *m_dataTimer;
    QTimer *m_testTimer;
    int m_columnCount;
};

ChartDataGenerator::ChartDataGenerator(QtDataVis3D::Q3DBars *barchart)
    : m_chart(barchart)
    , m_dataTimer(0)
    , m_testTimer(0)
    , m_columnCount(20)
{
    m_chart->setBarSpecs(QPointF(2.0f, 0.5f), QPointF(0.0f, 0.0f), true);
    m_chart->setupSampleSpace(QPoint(m_columnCount, m_columnCount*2));
}

ChartDataGenerator::~ChartDataGenerator()
{
    if (m_dataTimer) {
        m_dataTimer->stop();
        delete m_dataTimer;
    }
    if (m_testTimer) {
        m_testTimer->stop();
        delete m_testTimer;
    }
    delete m_chart;
}

void ChartDataGenerator::start()
{
    m_dataTimer = new QTimer();
    m_dataTimer->setTimerType(Qt::CoarseTimer);
    m_dataTimer->setInterval(100);
    QObject::connect(m_dataTimer, &QTimer::timeout, this, &ChartDataGenerator::addBars);
    m_dataTimer->start(100);

    // Uncomment this to enable style changing every 10 seconds
//    m_testTimer = new QTimer();
//    m_testTimer->setTimerType(Qt::CoarseTimer);
//    m_testTimer->setInterval(10000);
//    QObject::connect(m_testTimer, &QTimer::timeout, this, &ChartDataGenerator::changeStyle);
//    m_testTimer->start(10000);
}

void ChartDataGenerator::addBars()
{
    QVector<float> data;
    for (int i = 0; i < m_columnCount; i++) {
        data.append(((float)i / (float)m_columnCount) / 2.0f + (float)(rand() % 30) / 100);
    }
    m_chart->addDataSet(data);
}

void ChartDataGenerator::changeStyle()
{
    static int model = 0;
    switch (model) {
    case 0:
        m_chart->setBarType(QtDataVis3D::Q3DBars::Cylinders, false);
        break;
    case 1:
        m_chart->setBarType(QtDataVis3D::Q3DBars::Cylinders, true);
        break;
    case 2:
        m_chart->setBarType(QtDataVis3D::Q3DBars::Cones, false);
        break;
    case 3:
        m_chart->setBarType(QtDataVis3D::Q3DBars::Cones, true);
        break;
    case 4:
        m_chart->setBarType(QtDataVis3D::Q3DBars::Bars, false);
        break;
    case 5:
        m_chart->setBarType(QtDataVis3D::Q3DBars::Bars, true);
        break;
    case 6:
        m_chart->setBarType(QtDataVis3D::Q3DBars::Pyramids, false);
        break;
    case 7:
        m_chart->setBarType(QtDataVis3D::Q3DBars::Pyramids, true);
        break;
    }
    model++;
    if (model > 7)
        model = 0;
}

int main(int argc, char **argv)
{
    QGuiApplication app(argc, argv);

    QtDataVis3D::Q3DBars barchart;
    barchart.resize(1024, 768);
    barchart.show();

    ChartDataGenerator *generator = new ChartDataGenerator(&barchart);
    generator->start();

    return app.exec();
}