#include "imagewidget.h"
#include <QCoreApplication>
#include <QDir>
#include <QTimer>
#include <QPainter>
#include <QCoreApplication>

class ImageWidgetPrivate{
public:
    int index=0;
    QList<QString> images;
    QTimer *timer;
    bool pause =false;

    void setImage();
};

void ImageWidgetPrivate::setImage()
{
    index++;
    if(index >= images.size())
    {
        index=0;
    }
}


ImageWidget::ImageWidget(QWidget *parent) : IWidget(parent),m_d(new ImageWidgetPrivate )
{
    QString path = qApp->applicationDirPath()+"/image/";
    QDir dir(path);
    QFileInfoList infoList = dir.entryInfoList(QStringList()<<"*.png"<< "*.bmp"<< "*.jpg", QDir::Files);
    foreach (QFileInfo info, infoList) {
        m_d->images<< info.absoluteFilePath();
        qDebug()<< info.absoluteFilePath();
    }
    m_d->timer = new QTimer(this);
    connect(m_d->timer, &QTimer::timeout, [=](){
        if(!m_d->pause)
            m_d->setImage();
        update();
    });

    if(m_d->images.size() > 0)
    {
        m_d->timer->start(1000);
    }
}

ImageWidget::~ImageWidget()
{
    delete m_d;
}

QString ImageWidget::id()
{
    return "image";
}

void ImageWidget::paintEvent(QPaintEvent *event)
{
    QWidget::paintEvent(event);
    if(m_d->images.size() > 0 )
    {
        QPainter painter(this);
        QString fileName = m_d->images[m_d->index];
        QPixmap pixmap(fileName);
        pixmap =pixmap.scaled(this->width(), this->height(), Qt::KeepAspectRatio);
        int x = (width()-pixmap.width())/2;
        int y = (height()-pixmap.height())/2;
        painter.drawPixmap(x, y , pixmap);
    }

    QWidget::paintEvent(event);
}

void ImageWidget::mousePressEvent(QMouseEvent *event)
{
    Q_UNUSED(event)
    m_d->pause = !m_d->pause;
}

void ImageWidget::mouseDoubleClickEvent(QMouseEvent *event)
{
    Q_UNUSED(event)
    qApp->quit();
}

void ImageWidget::showEvent(QShowEvent *event)
{
    Q_UNUSED(event)
    QMetaObject::invokeMethod(this->parent(), "setTitlebarVisible", Qt::QueuedConnection,  Q_ARG(bool, false));
}

void ImageWidget::hideEvent(QHideEvent *event)
{
    Q_UNUSED(event)
     QMetaObject::invokeMethod(this->parent(), "setTitlebarVisible", Qt::QueuedConnection,  Q_ARG(bool, true));
}