video player

PDF_Reader.pro

@@ -1,4 +1,5 @@
-QT       += core gui axcontainer
+QT       += core gui axcontainer multimediawidgets
+WEBENGINE_CONFIG += use_proprietary_codecs
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 TARGET = PDF_Reader
 TEMPLATE = app

mainwindow.cpp

@@ -21,6 +21,7 @@ MainWindow::MainWindow(QWidget *parent) :
     connect(this->m_quitAction, &QAction::triggered, qApp, &QApplication::quit);
 
     this->setMenuBar(menuBar);
+    this->resize(800, 600);
     show();
 }
 
@@ -30,12 +31,24 @@ MainWindow::~MainWindow()
 
 }
 
+void MainWindow::delay(int delay) {
+    QTime dieTime= QTime::currentTime().addSecs(delay);
+    while (QTime::currentTime() < dieTime)
+        QCoreApplication::processEvents(QEventLoop::AllEvents, 100);
+}
+
 void MainWindow::slotOpenAction() {
     m_filename = QFileDialog::getOpenFileName(
-            this, tr("Выберите файл"), "../", tr("PDF (*.pdf) ;; DOCX (*.docx) ;; XLSX (*.xlsx) ;; PPTX (*.pptx)"));
+            this, tr("Выберите файл"), "../", tr("MPEG (*.mpeg) ;; PDF (*.pdf) ;; DOCX (*.docx) ;; XLSX (*.xlsx) ;; PPTX (*.pptx)"));
     if (m_filename != "") {
+        if (axObj) {
             qDebug() << "Close file!\n";
             closeFile();
+        }
+        if (m_videoWidget) {
+            qDebug() << "Close MPEG!\n";
+            closeMPEG();
+        }
 
         if (m_filename.endsWith(".pdf")) {
             openPDF(m_filename);
@@ -45,6 +58,8 @@ void MainWindow::slotOpenAction() {
             openDOCX(m_filename);
         } else if (m_filename.endsWith(".xlsx")) {
             openXLSX(m_filename);
+        } else if (m_filename.endsWith(".mpeg")) {
+            openMPEG(m_filename);
         }
     }
 }
@@ -66,6 +81,7 @@ void MainWindow::closeFile() {
         axObj->clear();
         delete axObj;
         axObj = nullptr;
+        qDebug() << "file closed!";
     }
 }
 
@@ -78,46 +94,62 @@ void MainWindow::openPDF(QString &filename) {
     axObj->dynamicCall("LoadFile(QString)", filename);
 }
 
+/* run slideshow */
+void MainWindow::playPPTX() {
+    // Open parameter
+    QList<QVariant> param_list;
+    axObj->setControl("PowerPoint.Application");
+    param_list.append(m_filename);
+    param_list.append(1);
+    param_list.append(1);
+    param_list.append(0);
+    // Open a template file
+    QAxObject *presentations = axObj->querySubObject("Presentations");
+    QAxObject *presentation = presentations->querySubObject("Open(const QString&,int,int,int)", param_list);
+    // Start the slides
+    QAxObject *slideshow = presentation->querySubObject("SlideShowSettings");
+    slideshow->setProperty("RangeType", "ppShowAll");
+    slideshow->dynamicCall("run()");
+
+}
+
 void MainWindow::openPPTX(QString &filename) {
-    axObj = new QAxWidget("Powerpoint.Application", this);
+    /* инициализация окна виджетом */
-    setCentralWidget(axObj);
+    m_wideWidget = new QWidget;
-    if (axObj == nullptr)
+    setCentralWidget(m_wideWidget);
-    {
+    qDebug() << "1";
+    /* здесь будут элементы управления и окно проигрывателя (выравнивание по горизонтали) */
+    m_qvBoxLayout = new QVBoxLayout(m_wideWidget);
+
+    axObj = new QAxWidget("PowerPoint.Application", m_wideWidget);
+    m_btnPlay = new QPushButton("Начать презентацию");
+    qDebug() << "2";
+    m_qvBoxLayout->addWidget(axObj);
+    m_qvBoxLayout->addWidget(m_btnPlay);
+
+    if (axObj == nullptr) {
         return;
     }
-    if (!axObj->setControl(filename))
+    if (!axObj->setControl(filename)) {
-    {
         return;
     }
     axObj->dynamicCall("LoadFile(const QString&)", filename);
-    axObj->dynamicCall("SetVisible (bool Visible)", "true");
+    axObj->dynamicCall("SetVisible (bool Visible)", "false");
     axObj->setProperty("DisplayAlerts", false);
     axObj->setProperty("DisplayScrollBars", true);
-    axObj->setGeometry(this->geometry());
+
+    delay(1);
+
     axObj->show();
-
+    axObj->raise();
-    /* run slideshow */
+    qDebug() << "3";
-    //        // Open parameter
+    connect(this->m_btnPlay, &QPushButton::clicked, this, &MainWindow::playPPTX);
-    //        QList<QVariant> param_list;
-    //        param_list.append(filename);
-    //        param_list.append(1);
-    //        param_list.append(1);
-    //        param_list.append(0);
-    //        // Open a template file
-    //        QAxObject *presentations = axObj->querySubObject("Presentations");
-    //        QAxObject *presentation = presentations->querySubObject("Open(const QString&,int,int,int)", param_list);
-    //        // Start the slides
-    //        QAxObject *slideshow = presentation->querySubObject("SlideShowSettings");
-    //        slideshow->setProperty("RangeType", "ppShowAll");
-    //        slideshow->dynamicCall("run()");
-
 }
 
 void MainWindow::openXLSX(QString &filename) {
     axObj = new QAxWidget("Excel.Application", this);
     setCentralWidget(axObj);
-    if (axObj == nullptr)
+    if (axObj == nullptr) {
-    {
         return;
     }
     axObj->dynamicCall("SetVisible (bool Visible)", "false");
@@ -130,8 +162,7 @@ void MainWindow::openXLSX(QString &filename) {
 void MainWindow::openDOCX(QString &filename) {
     axObj = new QAxWidget("Word.Application", this);
     setCentralWidget(axObj);
-    if (axObj == nullptr)
+    if (axObj == nullptr) {
-    {
         return;
     }
     axObj->dynamicCall("SetVisible (bool Visible)", "false");
@@ -142,3 +173,135 @@ void MainWindow::openDOCX(QString &filename) {
     axObj->setControl(filename);
     axObj->show();
 }
+
+/* продолжить проигрывать видео */
+void MainWindow::playVideo() {
+    m_player->setPosition(m_position);
+    m_player->play();
+}
+
+/* остановка видео */
+void MainWindow::stopVideo() {
+    m_player->stop();
+}
+
+/* пауза видео */
+void MainWindow::pauseVideo() {
+    m_player->pause();
+}
+
+/* событие при изменении состояния видеопроигрывателя */
+void MainWindow::updateState(int state) {
+    switch (state) {
+        case QMediaPlayer::PlayingState:
+            /* media is played */
+            break;
+
+        case QMediaPlayer::PausedState:
+            /* media paused */
+            break;
+
+        case QMediaPlayer::StoppedState:
+            /* media is stopped */
+            break;
+    }
+}
+
+/* принудительно изменить время проигрывания */
+void MainWindow::changePosition() {
+    m_position = m_sliderVideo->value();
+    m_player->setPosition(m_position);
+}
+
+/* принудительно изменить время проигрывания */
+void MainWindow::updatePosition(qint64 position) {
+    m_position = position;
+    m_sliderVideo->setValue(m_position);
+}
+
+/* изменить величину звука */
+void MainWindow::changeVolume(int volume) {
+    m_player->setVolume(volume);
+}
+
+/* слот для иницализации значением слайдера видео */
+void MainWindow::updateDuration(qint64 duration) {
+    m_sliderVideo->setRange(0, m_player->duration());
+    m_sliderVideo->setEnabled(duration > 0);
+    m_sliderVideo->setPageStep(duration / 10);
+}
+
+/* инициализация медиа файла */
+void MainWindow::openMPEG(QString &filename) {
+    /* инициализация окна виджетом */
+    m_wideWidget = new QWidget;
+    setCentralWidget(m_wideWidget);
+
+    /* здесь будут элементы управления и окно проигрывателя (выравнивание по горизонтали) */
+    m_qvBoxLayout = new QVBoxLayout(m_wideWidget);
+
+    /* область для отображения видео */
+    m_videoWidget = new QVideoWidget;
+    m_player = new QMediaPlayer(m_videoWidget);
+    m_player->setVideoOutput(m_videoWidget);
+    m_player->setMedia(QUrl::fromLocalFile(filename));
+
+    /* область размещения кнопок управления видео */
+    m_hBtnsLayout = new QHBoxLayout;
+    m_play = new QPushButton("Play");
+    m_stop = new QPushButton("Stop");
+    m_pause = new QPushButton("Pause");
+    m_sliderVolume = new QSlider(Qt::Horizontal);
+    m_sliderVolume->setRange(0, 100); // диапазон значений громкости
+    m_sliderVolume->setValue(50); // текущая громкость 50%
+    m_sliderVideo = new QSlider(Qt::Horizontal);
+    m_hBtnsLayout->addWidget(m_play, 1);
+    m_hBtnsLayout->addWidget(m_stop, 1);
+    m_hBtnsLayout->addWidget(m_pause, 1);
+    m_hBtnsLayout->addWidget(&m_labelVolume);
+    m_hBtnsLayout->addWidget(m_sliderVolume, 1);
+    m_hBtnsLayout->addWidget(&m_labelScroll);
+    m_hBtnsLayout->addWidget(m_sliderVideo, 5);
+
+    /* поместить настроенные объекты в центральный виджет */
+    m_qvBoxLayout->addWidget(m_videoWidget);
+    m_qvBoxLayout->addLayout(m_hBtnsLayout);
+
+    /* связать слоты */
+    connect(this->m_play, &QPushButton::clicked, this, &MainWindow::playVideo);
+    connect(this->m_stop, &QPushButton::clicked, this, &MainWindow::stopVideo);
+    connect(this->m_pause, &QPushButton::clicked, this, &MainWindow::pauseVideo);
+    connect(this->m_sliderVolume, &QSlider::sliderMoved, this, &MainWindow::changeVolume);
+    connect(this->m_sliderVideo, &QSlider::sliderMoved, this, &MainWindow::changePosition);
+    connect(this->m_sliderVideo, &QSlider::valueChanged, this, &MainWindow::changePosition);
+    connect(this->m_player, &QMediaPlayer::durationChanged, this, &MainWindow::updateDuration);
+    connect(this->m_player, &QMediaPlayer::positionChanged, this, &MainWindow::updatePosition);
+    connect(this->m_player, &QMediaPlayer::stateChanged, this, &MainWindow::updateState);
+
+    /* начать проигрывать видео */
+    playVideo();
+}
+
+void MainWindow::closeMPEG() {
+    /* отключение всех слотов */
+    disconnect(this->m_play, &QPushButton::clicked, this, &MainWindow::playVideo);
+    disconnect(this->m_stop, &QPushButton::clicked, this, &MainWindow::stopVideo);
+    disconnect(this->m_pause, &QPushButton::clicked, this, &MainWindow::pauseVideo);
+    disconnect(this->m_sliderVolume, &QSlider::sliderMoved, this, &MainWindow::changeVolume);
+    disconnect(this->m_sliderVideo, &QSlider::sliderMoved, this, &MainWindow::changePosition);
+    disconnect(this->m_sliderVideo, &QSlider::sliderPressed, this, &MainWindow::changePosition);
+    disconnect(this->m_player, &QMediaPlayer::durationChanged, this, &MainWindow::updateDuration);
+    disconnect(this->m_player, &QMediaPlayer::positionChanged, this, &MainWindow::updatePosition);
+    disconnect(this->m_player, &QMediaPlayer::stateChanged, this, &MainWindow::updateState);
+
+    /* удаление динамических объектов */
+    delete m_sliderVideo;
+    delete m_sliderVolume;
+    delete m_play;
+    delete m_stop;
+    delete m_pause;
+    delete m_hBtnsLayout;
+    delete m_player;
+    delete m_videoWidget;
+    delete m_qvBoxLayout;
+}

mainwindow.h

@@ -5,6 +5,13 @@
 #include <QMainWindow>
 #include <ActiveQt>
 #include <QMenuBar>
+#include <qt_windows.h>
+#include <QtMultimedia/QMediaPlayer>
+#include <QtMultimedia/QMediaPlaylist>
+#include <QtMultimediaWidgets/QVideoWidget>
+#include <QDebug>
+#include <QVBoxLayout>
+#include <QHBoxLayout>
 
 namespace Ui {
 class MainWindow;
@@ -19,19 +26,59 @@ public:
     ~MainWindow();
 
 private:
-    Ui::MainWindow *ui;
+/* begin common objects */
-
+    Ui::MainWindow *ui{nullptr};
-    QAxWidget *axObj{nullptr};
+    QWidget *m_wideWidget{nullptr};
-    QString m_filename;
+    QVBoxLayout *m_qvBoxLayout{nullptr};
-    void openPDF(QString&);
-    void openPPTX(QString&);
-    void openXLSX(QString&);
-    void openDOCX(QString&);
-    void closeFile();
     QMenuBar *mb{nullptr};
     QMenu *m_menuFile{nullptr};
     QAction *m_openAction{nullptr};
     QAction *m_quitAction{nullptr};
+    QString m_filename;
+    void delay(int);
+/* end common objects */
+
+/* begin DOCX, XLSX, PPTX objects */
+    QAxWidget *axObj{nullptr};
+    void openPDF(QString&);
+    void openXLSX(QString&);
+    void openDOCX(QString&);
+    void openPPTX(QString&);
+    void closeFile();
+    QPushButton *m_btnPlay;
+private slots:
+    void playPPTX();
+/* end DOCX, XLSX, PPTX objects */
+
+/* begin MPEG objects */
+private:
+    void openMPEG(QString&);
+    void closeMPEG();
+
+    QVideoWidget *m_videoWidget{nullptr};
+    QMediaPlayer *m_player{nullptr};
+    QHBoxLayout *m_hBtnsLayout{nullptr};
+    QPushButton *m_play{nullptr};
+    QPushButton *m_stop{nullptr};
+    QPushButton *m_pause{nullptr};
+    QSlider *m_sliderVolume{nullptr};
+    QSlider *m_sliderVideo{nullptr};
+    QLabel m_labelVolume{"Volume:"};
+    QLabel m_labelScroll{"Scroll:"};
+    qint64 m_position{0};
+    int m_volume;
+private slots:
+    void playVideo();
+    void stopVideo();
+    void pauseVideo();
+    void changeVolume(int);
+    void changePosition();
+    void updatePosition(qint64);
+    void updateDuration(qint64);
+    void updateState(int);
+/* end MPEG objects */
+
+
 
 private slots:
     void slotOpenAction();