程序示例精选
C++ QT视频音乐播放器
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前言

运行结果

文章目录

一、所需工具软件

二、使用步骤

代码如下（示例）：

#include "MainWindow.h"
#include "ui_MainWindow.h"

#include <QPainter>
#include <QFileDialog>
#include <QDebug>
#include <QMouseEvent>
#include <QMessageBox>

#include "AppConfig.h"
#include "Base/FunctionTransfer.h"

#include "Widget/SetVideoUrlDialog.h"
#include "Widget/mymessagebox_withTitle.h"
Q_DECLARE_METATYPE(VideoPlayerState)

MainWindow::MainWindow(QWidget *parent) :
    DragAbleWidget(parent),
    ui(new Ui::MainWindow)
{
   
   
    ui->setupUi(this->getContainWidget());

    FunctionTransfer::init(QThread::currentThreadId());

    ///初始化播放器
    VideoPlayer::initPlayer();

    setWindowFlags(Qt::FramelessWindowHint);//|Qt::WindowStaysOnTopHint);  //使窗口的标题栏隐藏
//    setAttribute(Qt::WA_TranslucentBackground);

    //因为VideoPlayer::PlayerState是自定义的类型 要跨线程传递需要先注册一下
    qRegisterMetaType<VideoPlayerState>();

    mPopMenu = new QMenu(this);

    mAddVideoAction              = new QAction(QIcon("images/open.png"), QStringLiteral("打开网络流"), this);
    mEditVideoAction             = new QAction(QIcon("images/open.png"), QStringLiteral("修改数据"), this);
    mDeleteVideoAction           = new QAction(QIcon("images/open.png"), QStringLiteral("删除"), this);
    mClearVideoAction            = new QAction(QIcon("images/open.png"), QStringLiteral("清空"), this);

    mPopMenu->addAction(mAddVideoAction);
//    mPopMenu->addAction(mEditVideoAction);
//    mPopMenu->addSeparator();       //添加分离器
    mPopMenu->addAction(mDeleteVideoAction);
    mPopMenu->addAction(mClearVideoAction);

    connect(mAddVideoAction,     &QAction::triggered, this, &MainWindow::slotActionClick);
    connect(mEditVideoAction,    &QAction::triggered, this, &MainWindow::slotActionClick);
    connect(mDeleteVideoAction,  &QAction::triggered, this, &MainWindow::slotActionClick);
    connect(mClearVideoAction,   &QAction::triggered, this, &MainWindow::slotActionClick);

    connect(ui->pushButton_open, &QPushButton::clicked, this, &MainWindow::slotBtnClick);
    connect(ui->toolButton_open, &QPushButton::clicked, this, &MainWindow::slotBtnClick);
    connect(ui->pushButton_clear,&QPushButton::clicked, this, &MainWindow::slotBtnClick);
    connect(ui->pushButton_play, &QPushButton::clicked, this, &MainWindow::slotBtnClick);
    connect(ui->pushButton_volume, &QPushButton::clicked, this, &MainWindow::slotBtnClick);

    connect(ui->horizontalSlider, SIGNAL(sig_valueChanged(int)), this, SLOT(slotSliderMoved(int)));
    connect(ui->horizontalSlider_2, SIGNAL(valueChanged(int)), this, SLOT(slotSliderMoved(int)));

    ui->listWidget->setContextMenuPolicy(Qt::CustomContextMenu);

    connect(ui->listWidget, &QListWidget::itemDoubleClicked, this, &MainWindow::slotItemDoubleClicked);
    connect(ui->listWidget, &QListWidget::customContextMenuRequested, this, &MainWindow::slotCustomContextMenuRequested);

    ui->page_video->setMouseTracking(true);
    ui->widget_videoPlayer->setMouseTracking(true);
//    ui->page_video->installEventFilter(this);
    ui->widget_videoPlayer->installEventFilter(this);
    ui->widget_container->installEventFilter(this);

    mCurrentIndex = 0;
    mCurrentItem = nullptr;
    mIsNeedPlayNext = false;

    mPlayer = new VideoPlayer();
    mPlayer->setVideoPlayerCallBack(this);

    mTimer = new QTimer; //定时器-获取当前视频时间
    connect(mTimer, &QTimer::timeout, this, &MainWindow::slotTimerTimeOut);
    mTimer->setInterval(500);

    mTimer_CheckControlWidget = new QTimer; //用于控制控制界面的出现和隐藏
    connect(mTimer_CheckControlWidget, &QTimer::timeout, this, &MainWindow::slotTimerTimeOut);
    mTimer_CheckControlWidget->setInterval(2500);

    mAnimation_ControlWidget  = new QPropertyAnimation(ui->widget_controller, "geometry");

    ui->stackedWidget->setCurrentWidget(ui->page_open);
    ui->pushButton_pause->hide();

    resize(1024,768);
    setTitle(QStringLiteral("我的播放器-V%1").arg(AppConfig::VERSION_NAME));

    mVolume = mPlayer->getVolume();

    std::thread([=]
    {
   
   
        while (1)
        {
   
   
            AppConfig::mSleep(500);

            static QPoint lastPoint = QPoint(0, 0);

            FunctionTransfer::runInMainThread([=]()
            {
   
   
                QPoint point = QCursor::pos();

                if (this->geometry().contains(point))
                {
   
   
                    if (lastPoint != point)
                    {
   
   

                        mTimer_CheckControlWidget->stop();
                        mTimer_CheckControlWidget->start();

                        lastPoint = point;
                    }
                }
            });
        }

    }).detach();
}

MainWindow::~MainWindow()
{
   
   
qDebug()<<__FUNCTION__;

    AppConfig::saveConfigInfoToFile();
    AppConfig::removeDirectory(AppConfig::AppDataPath_Tmp);

    delete ui;
}

void MainWindow::showOutControlWidget()
{
   
   

    mAnimation_ControlWidget->setDuration(800);

    int w = ui->widget_controller->width();
    int h = ui->widget_controller->height();
    int y = ui->widget_container->height() - ui->widget_controller->height();

    if (ui->widget_controller->isHidden())
    {
   
   
        ui->widget_controller->show();
        mAnimation_ControlWidget->setStartValue(ui->widget_controller->geometry());
    }
    else
    {
   
   
        mAnimation_ControlWidget->setStartValue(ui->widget_controller->geometry());
    }

//    mAnimation_ControlWidget->setKeyValueAt(0, QRect(0, 0, 00, 00));
//    mAnimation_ControlWidget->setKeyValueAt(0.4, QRect(20, 250, 20, 30));
//    mAnimation_ControlWidget->setKeyValueAt(0.8, QRect(100, 250, 20, 30));
//    mAnimation_ControlWidget->setKeyValueAt(1, QRect(250, 250, 100, 30));
    mAnimation_ControlWidget->setEndValue(QRect(x, y, w, h));
    mAnimation_ControlWidget->setEasingCurve(QEasingCurve::Linear); //设置动画效果

    mAnimation_ControlWidget->start();

}

void MainWindow::hideControlWidget()
{
   
   
    mAnimation_ControlWidget->setTargetObject(ui->widget_controller);

    mAnimation_ControlWidget->setDuration(300);

    int w = ui->widget_controller->width();
    int h = ui->widget_controller->height();
    int x = 0;
    int y = ui->widget_container->height() + h;

    mAnimation_ControlWidget->setStartValue(ui->widget_controller->geometry());
    mAnimation_ControlWidget->setEasingCurve(QEasingCurve::Linear); //设置动画效果

    mAnimation_ControlWidget->start();
}


void MainWindow::setVideoNums(const int &nums)
{
   
   
    ui->label_num->setText(QStringLiteral("%1个文件").arg(nums));
}

void MainWindow::addVideoFiles(const QStringList &videoFileList)
{
   
   
    if (!videoFileList.isEmpty())
    {
   
   
        QString filePath = videoFileList.first();
        AppConfig::gVideoFilePath = QFileInfo(filePath).absoluteDir().path();
        AppConfig::saveConfigInfoToFile();
    }

    for (QString filePath : videoFileList)
    {
   
   
        addVideoFile(filePath);
    }
}

void MainWindow::addVideoFile(const QString &filePath)
{
   
   
    QFileInfo fileInfo(filePath);

    QListWidgetItem *item = new QListWidgetItem();
    ui->listWidget->addItem(item);

    mVideoFileList.append(filePath);

    setVideoNums(mVideoFileList.size());
}

void MainWindow::clear()
{
   
   
    stopPlay();
    ui->listWidget->clear();
    mVideoFileList.clear();

    setVideoNums(mVideoFileList.size());
}

void MainWindow::startPlay()
{
   
   
    playVideo(0);
}

void MainWindow::stopPlay()
{
   
   
    if (mCurrentItem != nullptr)
    {
   
   
        mCurrentItem->setBackgroundColor(QColor(0, 0, 0, 0));
    }

    mCurrentItem = nullptr;

    mIsNeedPlayNext = false;
    mPlayer->stop(true);
}

void MainWindow::playVideo(const int &index)
{
   
   
    int playIndex = index;

//    ///播放到最后一个后，从头开始播放
//    {
   
   
//        if ((playIndex < 0) || (mVideoFileList.size() <= playIndex))
//        {
   
   
//            playIndex = 0;
//        }
//    }

    if (index >= 0 && mVideoFileList.size() > playIndex)
    {
   
   
        mCurrentIndex = playIndex;

        QString filePath = mVideoFileList.at(playIndex);

qDebug()<<__FUNCTION__<<filePath<<playIndex;

        playVideoFile(filePath);

//        ui->listWidget->setCurrentRow(playIndex);
        QListWidgetItem *item = ui->listWidget->item(playIndex);

        if (mCurrentItem != nullptr)
        {
   
   
            mCurrentItem->setBackgroundColor(QColor(0, 0, 0, 0));
        }

        mCurrentItem = item;

        mCurrentItem->setBackgroundColor(QColor(75, 92, 196));
    }
}

void MainWindow::playVideoFile(const QString &filePath)
{
   
   
    mIsNeedPlayNext = false;
    mPlayer->stop(true);
    mPlayer->startPlay(filePath.toStdString());
}

void MainWindow::slotSliderMoved(int value)
{
   
   
    if (QObject::sender() == ui->horizontalSlider)
    {
   
   
        mPlayer->seek((qint64)value * 1000000);
    }
    else if (QObject::sender() == ui->horizontalSlider_2)
    {
   
   
        mPlayer->setVolume(value / 100.0);
        ui->label_volume->setText(QString("%1").arg(value));
    }
}

void MainWindow::slotTimerTimeOut()
{
   
   
    if (QObject::sender() == mTimer)
    {
   
   
        qint64 Sec = mPlayer->getCurrentTime();

        ui->horizontalSlider->setValue(Sec);

        QString curTime;
        QString sStr = QString("0%1").arg(Sec % 60);
        if (hStr == "00")
        {
   
   
            curTime = QString("%1:%2").arg(mStr.right(2)).arg(sStr.right(2));
        }
        else
        {
   
   
            curTime = QString("%1:%2:%3").arg(hStr).arg(mStr.right(2)).arg(sStr.right(2));
        }

        ui->label_currenttime->setText(curTime);
    }
    else if (QObject::sender() == mTimer_CheckControlWidget)
    {
   
   
        mTimer_CheckControlWidget->stop();
        hideControlWidget();
    }
}


void MainWindow::doAdd()
{
   
   
    QStringList fileList = QFileDialog::getOpenFileNames(
               this, QStringLiteral("选择要播放的文件"),
                AppConfig::gVideoFilePath,//初始目录
                QStringLiteral("视频文件 (*.flv *.rmvb *.avi *.MP4 *.mkv);;")
                +QStringLiteral("音频文件 (*.mp3 *.wma *.wav);;")
                +QStringLiteral("所有文件 (*.*)"));

运行结果

三、在线协助：

如需安装运行环境或远程调试，可点击博主头像，进入个人主页查看博主联系方式，由专业技术人员远程协助！

1）远程安装运行环境，代码调试
2）Visual Studio, Qt, C++, Python编程语言入门指导
3）界面美化
4）软件制作