C++ QT视频播放器1.1

#include "videoplayer.h" #include "ui_videoplayer.h" #include <QTime> #include <QDebug> #include <opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp> #include "Mylabel.h" VideoPlayer::VideoPlayer(QWidget *parent) : QMainWindow(parent) , ui(new Ui::VideoPlayer) { ui->setupUi(this); //固定窗口尺寸（以用户设计窗口为准） setFixedSize(width(),height()); initWidget(); // 初始化窗口 mediaPlayerInit(); // 媒体播放初始化 //定时器，用于获取视频当前播放时间，毫秒值 this->timer = new QTimer(this);//定时器 connect(timer,&QTimer::timeout,this,&VideoPlayer::on_timeout); /* 媒体连接信号槽 */ connect(player,SIGNAL(positionChanged(qint64)),this,SLOT(onPositionChanged(qint64))); //connect(player,SIGNAL(stateChanged(QMediaPlayer::State)),this,SLOT(onStateChanged(QMediaPlayer::State))); connect(player, SIGNAL(durationChanged(qint64)), this, SLOT(onDurationChanged(qint64)));//视频持续时间，毫秒值 mediaPlayer->duration()可以直接获取 /* 视频进度条和音量调节*/ //自定义的信号costomSliderClicked() connect(ui->TimeSlider,SIGNAL(costomSliderClicked()),this,SLOT(sliderClicked())); connect(ui->volumeSlider,SIGNAL(costomSliderClicked()),this,SLOT(volumeSliderClicked())); /* 图标连接信号槽 自定义的信号clicked()*/ connect(ui->openVideoLabel,SIGNAL(clicked()),this,SLOT(openVideoClicked()));//打开文件 connect(ui->playMode,SIGNAL(clicked()),this,SLOT(labelClicked()));//循环播放 connect(ui->preLabel,SIGNAL(clicked()),this,SLOT(preLabelClicked()));//上一集 connect(ui->nextLabel,SIGNAL(clicked()),this,SLOT(nextLabelClicked()));//下一集 connect(ui->accelerateLabel,SIGNAL(clicked()),this,SLOT(MediaFastForwardClicked())); //快进 connect(ui->moderateLabel,SIGNAL(clicked()),this,SLOT(MediaDrawBackClicked()));//后退 connect(ui->playVideoLabel,SIGNAL(clicked()),this,SLOT(MediaPlayClicked()));//播放/暂停 connect(ui->volumeLabel,SIGNAL(clicked()),this,SLOT(volumeClicked()));//小喇叭设置静音/声音 connect(ui->listLabel,SIGNAL(clicked()),this,SLOT(listLabelClicked()));//展开视频列表 //视频播放列表widget向主界面发送信号，主界面与其连接，获取数据 connect(ui->widget,SIGNAL(sendData(QList<QString>,int)),this,SLOT(getData(QList<QString>,int))); } VideoPlayer::~VideoPlayer() { delete player; delete mediaPlaylist; delete ui; } ////////////////////////////////////////////////////////////////////////////////////////////////////////////// //初始化窗口 void VideoPlayer::initWidget(){ /* 视频窗口 */ // videoWidget = new QVideoWidget(); // videoWidget->setStyleSheet("border-image: none;" "background: transparent;""border:none"); // videoWidget->setMinimumSize(500, 480); // 视频窗口大小 OriginWidth = width(); setWindowOpacity(0.98); QPalette pal = palette(); pal.setColor(QPalette::Background, QColor( 230, 230, 250)); setPalette(pal); //this->setStyleSheet("background-color:rgba(240,255,255,0.5)"); QGraphicsScene * scene = new QGraphicsScene(this); ui->graphicsView->setScene(scene); ui->graphicsView->setBackgroundBrush(QColor(0, 0, 0)); // 设置黑色背景 videoItem = new QGraphicsVideoItem; videoItem->setSize(QSize(ui->graphicsView->width(),ui->graphicsView->height())); videoItem->setFlags(QGraphicsItem::ItemIsMovable| QGraphicsPathItem::ItemIsSelectable| QGraphicsItem::ItemIsFocusable); scene->addItem(videoItem); ui->graphicsView->setStyleSheet("border-image: none;" "background: transparent;""border:none"); ui->graphicsView->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); // 隐藏垂直滚动条 ui->graphicsView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); // 隐藏水平滚动条 //UI控件的样式设计 ui->volumeSlider->setStyleSheet( "QSlider::groove:horizontal{" "border:1px solid skyblue;" "background-color:skyblue;" "height:10px;" "border-radius:5px;" "}" "QSlider::handle:horizontal{" "background:qradialgradient(spread:pad,cx:0.5,cy:0.5,radius:0.5,fx:0.5,fy:0.5,stop:0.7 white,stop:0.8 rgb(140,212,255));" "width:20px;" "border-radius:10px;" "margin-top:-5px;" "margin-bottom:-5px;" "}" "#volumeSlider:sub-page:horizontal{" "background:green;" "margin:5px;" "border-radius:5px;}" ); ui->TimeSlider->setStyleSheet( "QSlider::groove:horizontal{" "border:1px solid skyblue;" "background-color:skyblue;" "height:10px;" "border-radius:5px;" "}" "QSlider::handle:horizontal{" "background:qradialgradient(spread:pad,cx:0.5,cy:0.5,radius:0.5,fx:0.5,fy:0.5,stop:0.7 white,stop:0.8 rgb(140,212,255));" "width:20px;" "border-radius:10px;" "margin-top:-5px;" "margin-bottom:-5px;" "}" "#TimeSlider:sub-page:horizontal{" "background:green;" "margin:5px;" "border-radius:5px;}" ); //打开视频图标 QString openFilePath = ":/images/openFile.png";//图标位置自行调整 QIcon openFileLabelIcon = QIcon(openFilePath); QPixmap m_openFilelPic = openFileLabelIcon.pixmap(openFileLabelIcon.actualSize(QSize(ui->openVideoLabel->width(), ui->openVideoLabel->height())));//size自行调整 ui->openVideoLabel->setPixmap(m_openFilelPic); //设置循环/顺序播放图标 QString filePath = ":/images/seqPlay.png";//图标位置自行调整 QIcon icon = QIcon(filePath); QPixmap m_pic = icon.pixmap(icon.actualSize(QSize(ui->playMode->width(), ui->playMode->height())));//size自行调整 ui->playMode->setPixmap(m_pic); //快进播放图标 QString accFilePath = ":/images/accelerate.png";//图标位置自行调整 QIcon accIcon = QIcon(accFilePath); QPixmap m_accPic = accIcon.pixmap(accIcon.actualSize(QSize(ui->accelerateLabel->width(), ui->accelerateLabel->height())));//size自行调整 ui->accelerateLabel->setPixmap(m_accPic); //小喇叭图标 QString volumeFilePath = ":/images/volume.png";//图标位置自行调整 QIcon volumeIcon = QIcon(volumeFilePath); QPixmap m_volumePic = volumeIcon.pixmap(volumeIcon.actualSize(QSize(ui->volumeLabel->width(), ui->volumeLabel->height())));//size自行调整 ui->volumeLabel->setPixmap(m_volumePic); //后退播放图标 QString modFilePath = ":/images/moderate.png";//图标位置自行调整 QIcon modIcon = QIcon(modFilePath); QPixmap m_modPic = modIcon.pixmap(modIcon.actualSize(QSize(ui->moderateLabel->width(), ui->moderateLabel->height())));//size自行调整 ui->moderateLabel->setPixmap(m_modPic); //暂停播放图标 QString playFilePath = ":/images/pause1.png";//图标位置自行调整 QIcon playIcon = QIcon(playFilePath); QPixmap m_playPic = playIcon.pixmap(playIcon.actualSize(QSize(ui->playVideoLabel->width(),