#include "ffmpegvideodlg.h"
#include "ui_ffmpegvideodlg.h"
#include <QMessageBox>

ffmpegvideoDlg::ffmpegvideoDlg(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::ffmpegvideoDlg)
{
    ui->setupUi(this);
    iniWindow();
}

ffmpegvideoDlg::~ffmpegvideoDlg()
{
    stop();
    delete ui;
}


 void ffmpegvideoDlg::iniWindow()
{
     QString VideoFilePath = QDir::currentPath()+"./Video";
     QDir VideoDir (VideoFilePath);
     if(!VideoDir.exists())
     {
         VideoDir.mkdir(VideoFilePath);
         qDebug()<<"文件夹创建成功";
     }
}
void ffmpegvideoDlg::setUrl(QString url)
{
    ffmpeg->setUrl(url);
}

void ffmpegvideoDlg::play()
{
    if(!m_PlayStatus)
    {
        m_PlayStatus = true;
        ffmpeg = new Cffmpeg_decode;
        ffmpeg->IsstopPlay = false;
        ffmpeg->moveToThread(&workerThread);
        connect(&workerThread,&QThread::finished,ffmpeg,&QObject::deleteLater);        //线程发送结束标志
        connect(this, &ffmpegvideoDlg::operate, ffmpeg, &Cffmpeg_decode::run);         //线程开始处理数据
        connect(ffmpeg,SIGNAL(sendQImage(QImage)),this,SLOT(receiveQImage(QImage)));   //发送解析的图片
        connect(ffmpeg,SIGNAL(sendConnectFail(int)),this,SLOT(showMessagBox(int)));    //发送错误信息提示
        workerThread.start();
        emit this->operate();   //启用线程信号
    }
}
void ffmpegvideoDlg::stop()
{
    if(m_PlayStatus)
    {
        m_PlayStatus = false;
        ffmpeg->IsstopPlay = true;  //线程结束标志
        workerThread.quit();        //线程退出时自动delete线程里的类
        workerThread.wait();
        img.fill(Qt::black);
    }
}

//绘图事件
void ffmpegvideoDlg::paintEvent(QPaintEvent *)
{
    QPainter painter(this);
    painter.drawImage(m_ax,m_ay,img);
}

//区域大小改变事件
void ffmpegvideoDlg::resizeEvent(QResizeEvent *event)
{
    //区域1920*1080自适应
    double VideoAreaHeight = this->height();
    double VideoAreaWidth = this->width();
    //高度值相对比较大
    if(VideoAreaHeight*16>VideoAreaWidth*9)
    {
        m_setVideoAreaWidth = VideoAreaWidth;
        m_setVideoAreaHeight = VideoAreaWidth*9/16;
        m_ax = 0;
        m_ay = 0.5*(VideoAreaHeight-m_setVideoAreaHeight);
    }
    //宽度值相对比较大
    else
    {
        m_setVideoAreaHeight = VideoAreaHeight;
        m_setVideoAreaWidth = VideoAreaHeight*16/9;
        m_ax = 0.5*(VideoAreaWidth-m_setVideoAreaWidth);
        m_ay = 0;
    }
}

void ffmpegvideoDlg::receiveQImage(const QImage &rImg)
{

    //img = rImg.scaled(this->size());
    QSize imgsize(m_setVideoAreaWidth,m_setVideoAreaHeight);
    img = rImg.scaled(imgsize);
    update();
}
//显示不同提示消息
void ffmpegvideoDlg::showMessagBox(int type)
{
    switch (type) {
    case 1:
        QMessageBox::information(NULL,tr("提示"),"获取视频失败",QMessageBox::Ok);
        break;
    default:
        break;
    }

}
bool ffmpegvideoDlg::Isplay(bool  IsstopPlay)
{
    return ffmpeg->IsstopPlay = IsstopPlay;
}