#include "VideoWidget.h"

VideoWidget::VideoWidget(QWidget* parent)
    : QWidget(parent)
    , m_bIsWindMax(false)
    , m_iWgtWidth(800)
    , m_iWgtHeight(600)
    , m_iMaxWidth(1920)
    , m_iMaxHeight(1080)
    , m_iCurWidth(0)  // 当前宽度
    , m_iCurHeight(0) // 当前高度
    , m_bMoving(false)
    , m_bEmbedded(false)
    , m_pFfmpegDecodeNew(nullptr)
    , m_uiIndex(0)
    , m_uiDataSize(0)
    , m_bIsPlay(false)
    , m_iTimerId(-1)
    , m_uiParseStatus(0)
    , m_pPixmapItem(nullptr)
{
    ui.setupUi(this);
    setWindowFlags(Qt::FramelessWindowHint);
    connect(ui.pb_popup, &QPushButton::clicked, this, &VideoWidget::popupWidget);
    connect(ui.pb_minimize, &QPushButton::clicked, this, &VideoWidget::showMinimized);
    connect(ui.pb_resize, &QPushButton::clicked, this, &VideoWidget::resizeWidget);
    connect(ui.pb_hide, &QPushButton::clicked, this, &VideoWidget::hideWidget);
    connect(ui.pb_videoPlayer, &QPushButton::clicked, this, &VideoWidget::videoPlayer);
    connect(ui.cb_videoSpeed, &QComboBox::currentTextChanged, this, &VideoWidget::selectVideoSpeed);

    m_wgtRect.m_iMaxWidth  = 1920;
    m_wgtRect.m_iMaxHeight = 1080;
    m_wgtRect.m_iWgtWidth  = 800;
    m_wgtRect.m_iWgtHeight = 600;
    // FFmpeg播放器
    ui.gv_videoPlayer->setScene(new QGraphicsScene(this));
    ui.gv_videoPlayer->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); // 关闭水平滚动条
    ui.gv_videoPlayer->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); // 关闭垂直滚动条
    m_pFfmpegDecodeNew = new FfmpegDecodeNew();
    // 进度条
    ui.hs_videoPlayer->setMaximum(100);
    ui.hs_videoPlayer->setValue(0);
    connect(ui.hs_videoPlayer, &QSlider::sliderPressed, this,
            &VideoWidget::videoSilderPressed); // 按下
    connect(ui.hs_videoPlayer, &QSlider::sliderReleased, this,
            &VideoWidget::videoSilderReleased); // 释放
}

VideoWidget::~VideoWidget()
{
    if (m_pFfmpegDecodeNew) {
        m_pFfmpegDecodeNew->stop();
        m_pFfmpegDecodeNew->quit();
        m_pFfmpegDecodeNew->wait();
        delete m_pFfmpegDecodeNew;
        m_pFfmpegDecodeNew = nullptr;
    }
}

void VideoWidget::setParam(QString title, int count)
{
    m_strTitle = title;
    m_iCount   = count;
    ui.lb_videoTitle->setText(title);
}

void VideoWidget::resizeEvent(QResizeEvent* event)
{
    QSize size   = event->size();
    m_iCurWidth  = size.width();
    m_iCurHeight = size.height();
    resizeSubControl(m_iCurWidth, m_iCurHeight);
}

void VideoWidget::mouseMoveEvent(QMouseEvent* event)
{
    if (m_bEmbedded == true) {
        return;
    }
    if (event->buttons().testFlag(Qt::LeftButton) && m_bMoving) {
        this->setCursor(Qt::OpenHandCursor);
        this->move(this->pos() + (event->globalPos() - m_lastMousePos));
        m_lastMousePos = event->globalPos();
    }
}

void VideoWidget::mouseReleaseEvent(QMouseEvent* event)
{
    if (m_bEmbedded == true) {
        return;
    }
    if (event->button() == Qt::LeftButton) {
        m_bMoving = false;
        this->setCursor(Qt::ArrowCursor);
    }
}

void VideoWidget::mousePressEvent(QMouseEvent* event)
{
    if (m_bEmbedded == true) {
        return;
    }
    if (event->button() == Qt::LeftButton) {
        m_bMoving      = true;
        m_lastMousePos = event->globalPos();
    }
}

void VideoWidget::resizeWidget()
{
    if (false == m_bIsWindMax) {
        // 窗口最大化
        this->setGeometry(0, 0, m_iMaxWidth, m_iMaxHeight);
        // resizeSubControl(m_iMaxWidth, m_iMaxHeight);
    } else if (true == m_bIsWindMax) {
        // 窗口正常化
        int iWgtPosX = (m_iMaxWidth - m_iWgtWidth) / 2;
        int iWgtPosY = (m_iMaxHeight - m_iWgtHeight) / 2;
        this->setGeometry(iWgtPosX, iWgtPosY, m_iWgtWidth, m_iWgtHeight);
        // resizeSubControl(m_iWgtWidth,m_iWgtHeight);
    }
    m_bIsWindMax = !m_bIsWindMax;
}

void VideoWidget::resizeSubControl(int width, int height)
{
    // 背景窗口
    QRect rect = ui.wgt_video->geometry();
    ui.wgt_video->setGeometry(rect.x(), rect.y(), width, height);
    // 菜单窗口
    QRect rectMenu = ui.wgt_menu->geometry();
    ui.wgt_menu->setGeometry(rectMenu.x(), rectMenu.y(), width, rectMenu.height());
    rect = ui.wgt_resize->geometry();
    ui.wgt_resize->setGeometry(width - 1 - rect.width(), rect.y(), rect.width(), rect.height());
    rect = ui.pb_popup->geometry();
    ui.pb_popup->setGeometry(width - 100 - rect.width(), rect.y(), rect.width(), rect.height());
    // 控制窗口
    QRect rectCtrl = ui.wgt_control->geometry();
    ui.wgt_control->setGeometry(rectCtrl.x(), height - rectCtrl.height(), width, rectCtrl.height());
    // 显示窗口
    // FFmpeg播放器
    rect = ui.gv_videoPlayer->geometry();
    ui.gv_videoPlayer->setGeometry(rect.x(), rect.y(), width,
                                   height - rectMenu.height() - rectCtrl.height());
    fitInView();
}

void VideoWidget::fitInView()
{
    if (m_pPixmapItem) {
        ui.gv_videoPlayer->fitInView(m_pPixmapItem, Qt::KeepAspectRatio);
    }
}

void VideoWidget::popupWidget()
{
    emit popupVideoWidget(m_strTitle, m_iCount, m_bEmbedded);
}

void VideoWidget::setWidgetEmbedded(bool embedded)
{
    m_bEmbedded = embedded;
    if (embedded == true) {
        ui.pb_minimize->setEnabled(false);
        ui.pb_resize->setEnabled(false);
        ui.pb_popup->setText("弹出");
    } else if (embedded == false) {
        ui.pb_minimize->setEnabled(true);
        ui.pb_resize->setEnabled(true);
        ui.pb_popup->setText("内嵌");
    }
}

void VideoWidget::setVideoData(QByteArray array)
{
    m_videoArray = array;
}

void VideoWidget::videoPlayer()
{
    if (m_uiParseStatus == 0) { // 没有解析任务
        return;
    }

    if (m_bIsPlay == false) {
        m_iTimerId = startTimer(20);
        ui.pb_videoPlayer->setText("停止");
        m_bIsPlay = true; // 播放
    } else if (m_bIsPlay == true) {
        killTimer(m_iTimerId);
        ui.pb_videoPlayer->setText("播放");
        m_bIsPlay = false; // 停止
    }
    emit startPlayer(m_bIsPlay);
}

void VideoWidget::timerEvent(QTimerEvent* event)
{
    if (m_pFfmpegDecodeNew->getImage(m_image)) {
        m_pixmap = QPixmap::fromImage(m_image);
        m_pPixmapItem->setPixmap(m_pixmap);
        ui.gv_videoPlayer->fitInView(m_pPixmapItem, Qt::KeepAspectRatio);
    }
}

void VideoWidget::playedCount(unsigned int num, unsigned int count)
{
    int value = (count * 1.0) / (num * 1.0) * 100;
    // 用于显示播放进度
    ui.hs_videoPlayer->setValue(value);
    if (ui.hs_videoPlayer->value() == 100) {
        ui.pb_videoPlayer->setText("播放");
        ui.hs_videoPlayer->setValue(0);
    }
}

void VideoWidget::stopPlay()
{
    m_bIsPlay = true;
    videoPlayer();
    // 清空缓存
    m_pFfmpegDecodeNew->getConstBuffer()->clear();
}

void VideoWidget::setParseStatus(unsigned int status)
{
    m_uiParseStatus = status;
    if (m_uiParseStatus != 0) {
        m_pPixmapItem = new QGraphicsPixmapItem();
        ui.gv_videoPlayer->scene()->addItem(m_pPixmapItem);
    }
    if (m_uiParseStatus == 1) { // 离线解析
        ui.hs_videoPlayer->show();
        ui.lb_videoSpeed->show();
        ui.cb_videoSpeed->show();
    } else if (m_uiParseStatus == 2) { // 在线解析
        ui.hs_videoPlayer->hide();
        ui.lb_videoSpeed->hide();
        ui.cb_videoSpeed->hide();
    }
}

void VideoWidget::hideWidget()
{
    emit hideVideoWidget(m_iCount);
}

// 拖动进度条
void VideoWidget::videoSilderPressed()
{
    // 先暂停播放，然后拖动进度条
    killTimer(m_iTimerId);
    ui.pb_videoPlayer->setText("播放");
    m_bIsPlay = false; // 停止
    emit startPlayer(m_bIsPlay);
}
// 释放进度条
void VideoWidget::videoSilderReleased()
{
    // 从指定位置开始回放
    int  iPos = ui.hs_videoPlayer->value();
    emit setPlayPos(iPos);
    m_iTimerId = startTimer(20);
    ui.pb_videoPlayer->setText("停止");
    m_bIsPlay = true; // 播放
    emit startPlayer(m_bIsPlay);
}

void VideoWidget::clearWidget()
{
    if (m_pPixmapItem) {
        ui.gv_videoPlayer->scene()->removeItem(m_pPixmapItem);
        delete m_pPixmapItem;
        m_pPixmapItem = nullptr;
    }
    ui.pb_videoPlayer->setText("播放");
}

void VideoWidget::selectVideoSpeed()
{
    QString strSpeed = ui.cb_videoSpeed->currentText();
    emit    videoSpeed(strSpeed);
}