charts

#include "customchartview.h"
#include 

CustomChartView::CustomChartView(QGraphicsView *parent) :
    QChartView(parent)
{
    m_categories << "Jan" << "Feb" << "Mar" << "Apr";

    //初始化横轴
    initAxisX(m_categories);

    //初始化纵轴
    initAxisY();

    //初始化chart
    initChart();

    //初始化数据源
    initBar();

    //重新设置数据源
    setBar(m_categories);
}

CustomChartView::~CustomChartView()
{
//    delete []m_barset;
//    delete []m_barSeries;

    delete m_chart;
    m_chart = NULL;
}

void CustomChartView::initAxisX(QStringList categories)
{
    m_categories = categories;

    //初始化横轴
    m_axisX = new QBarCategoryAxis(this);
    m_axisX->setLinePenColor(Qt::black);
    m_axisX->setLabelsFont(QFont("consoles", 18));
    m_axisX->setGridLineVisible(false);
    m_axisX->append(m_categories);
}

void CustomChartView::initAxisY()
{
    //初始化纵轴
    m_axisY = new QValueAxis(this);
    m_axisY->setRange(0, 10);
    m_axisY->setLinePenColor(Qt::black);
    m_axisY->setLabelsFont(QFont("consoles", 18));
}

void CustomChartView::initChart()
{
    m_chart = new QChart();
    m_chart->legend()->setVisible(false);
    m_chart->setAnimationOptions(QChart::SeriesAnimations);
    m_chart->setAxisX(m_axisX);
    setChart(m_chart);
}

void CustomChartView::initBar()
{
    for(int i = 0; i < 6; i++)
    {
        m_barSeries[i] = new QBarSeries(this);
        m_barSeries[i]->setLabelsVisible(true);
        m_barSeries[i]->setLabelsPosition(QAbstractBarSeries::LabelsOutsideEnd);
        m_barset[i] = new QBarSet("", m_barSeries[i]);
        m_barset[i]->setLabelFont(QFont("consoles", 16));
        *m_barset[i] << 0;
        m_barSeries[i]->append(m_barset[i]);
        if(0 == i)
        {
            m_barset[i]->setBrush(Qt::darkRed);
            m_barset[i]->setLabelColor(Qt::darkRed);
            QObject::connect(m_barset[0], &QBarSet::hovered, [=](bool b, int i){
                    if(b)
                      m_barset[0]->setBrush(Qt::red);
                    else
                      m_barset[0]->setBrush(Qt::darkRed);
            });
        }
        else if(1 == i)
        {
            m_barset[i]->setBrush(Qt::darkGreen);
            m_barset[i]->setLabelColor(Qt::darkGreen);
            QObject::connect(m_barset[1], &QBarSet::hovered, [=](bool b, int i){
                    if(b)
                      m_barset[1]->setBrush(Qt::green);
                    else
                      m_barset[1]->setBrush(Qt::darkGreen);
            });
        }
        else if(2 == i)
        {
            m_barset[i]->setBrush(Qt::darkBlue);
            m_barset[i]->setLabelColor(Qt::darkBlue);
            QObject::connect(m_barset[2], &QBarSet::hovered, [=](bool b, int i){
                    if(b)
                      m_barset[2]->setBrush(Qt::blue);
                    else
                      m_barset[2]->setBrush(Qt::darkBlue);
            });
        }
        else if(3 == i)
        {
            m_barset[i]->setBrush(Qt::darkCyan);
            m_barset[i]->setLabelColor(Qt::darkCyan);
            QObject::connect(m_barset[3], &QBarSet::hovered, [=](bool b, int i){
                    if(b)
                      m_barset[3]->setBrush(Qt::cyan);
                    else
                      m_barset[3]->setBrush(Qt::darkCyan);
            });
        }
        else if(4 == i)
        {
            m_barset[i]->setBrush(Qt::darkMagenta);
            m_barset[i]->setLabelColor(Qt::darkMagenta);
            QObject::connect(m_barset[i], &QBarSet::hovered, [=](bool b, int i){
                    if(b)
                      m_barset[4]->setBrush(Qt::magenta);
                    else
                      m_barset[4]->setBrush(Qt::darkMagenta);
            });
        }
        else if(5 == i)
        {
            m_barset[i]->setBrush(Qt::darkGray);
            m_barset[i]->setLabelColor(Qt::darkGray);
            QObject::connect(m_barset[5], &QBarSet::hovered, [=](bool b, int i){
                    if(b)
                      m_barset[5]->setBrush(Qt::gray);
                    else
                      m_barset[5]->setBrush(Qt::darkGray);
            });
        }
    }
}

void CustomChartView::setBar(QStringList categories)
{
    m_categories = categories;

    //重置横轴
    m_axisX->clear();
    m_axisX->append(m_categories);

    //重置纵轴
    m_axisY->setRange(0, 10);


//    m_chart->removeAllSeries();//crash ?
    for(int i = 0; i < 6; i++)//ok
    {
        if(m_barSeries[i] != NULL)
            m_chart->removeSeries(m_barSeries[i]);

    }

    //重新设置数据源
    for(int i = 0; i < categories.size(); i++)
    {
        m_barset[i]->setLabel(categories.at(i));
        m_barset[i]->replace(0, 0);

        m_barSeries[i]->append(m_barset[i]);
        m_chart->addSeries(m_barSeries[i]);
        m_chart->setAxisY(m_axisY, m_barSeries[i]);
    }

}

void CustomChartView::changeLabelHint(QString label)
{
    int max = 0;
    for(int i = 0; i < m_categories.size(); i++)
    {
        if(label == m_barset[i]->label())
        {
            m_barset[i]->append(m_barset[i]->at(0)+1);
            m_barset[i]->remove(0);

            max = m_barset[i]->at(0);

            break;
        }
    }

    for(int i = 0; i < m_categories.size(); i++)
    {
        if(m_barset[i]->at(0) > max)
            max = m_barset[i]->at(0);
    }

    if(max + 2 >= m_axisY->max())
        m_axisY->setRange(0, max+2);
}