PlayerDemo.cpp

Go to the documentation of this file.

 
// Copyright (c) 2008-2019 OpenShot Studios, LLC
//
// SPDX-License-Identifier: LGPL-3.0-or-later
 
#include <string>
 
#include "PlayerDemo.h"
#include "../QtPlayer.h"
 
#include <QMessageBox>
#include <QFileDialog>
#include <QWidget>
#include <QBoxLayout>
#include <QMenuBar>
#include <QMenu>
#include <QKeyEvent>
#include <QCloseEvent>
#include <QApplication>
 
PlayerDemo::PlayerDemo(QWidget *parent)
    : QWidget(parent)
    , vbox(new QVBoxLayout(this))
    , menu(new QMenuBar(this))
    , video(new VideoRenderWidget(this))
    , player(new openshot::QtPlayer(video->GetRenderer()))
{
    setWindowTitle("OpenShot Player");
 
    menu->setNativeMenuBar(false);
 
    QAction *action = NULL;
    action = menu->addAction("Choose File");
    connect(action, SIGNAL(triggered(bool)), this, SLOT(open(bool)));
 
    vbox->addWidget(menu, 0);
    vbox->addWidget(video, 1);
 
    vbox->setMargin(0);
    vbox->setSpacing(0);
    resize(600, 480);
 
    // Accept keyboard event
    setFocusPolicy(Qt::StrongFocus);
 
}
 
PlayerDemo::~PlayerDemo()
{
}
 
void PlayerDemo::closeEvent(QCloseEvent *event)
{
    // Close window, stop player, and quit
    QWidget *pWin = QApplication::activeWindow();
    pWin->hide();
    player->Stop();
    QApplication::quit();
}
 
void PlayerDemo::keyPressEvent(QKeyEvent *event)
{
    if (event->key() == Qt::Key_Space || event->key() == Qt::Key_K) {
 
        if (player->Mode() == openshot::PLAYBACK_PAUSED)
        {
            // paused, so start playing again
            player->Play();
 
        }
        else if (player->Mode() == openshot::PLAYBACK_PLAY)
        {
 
            if (player->Speed() == 0)
                // already playing, but speed is zero... so just speed up to normal
                player->Speed(1);
            else
                // already playing... so pause
                player->Pause();
 
        }
 
    }
    else if (event->key() == Qt::Key_J) {
        if (player->Speed() - 1 != 0)
            player->Speed(player->Speed() - 1);
        else
            player->Speed(player->Speed() - 2);
 
        if (player->Mode() == openshot::PLAYBACK_PAUSED)
            player->Play();
    }
    else if (event->key() == Qt::Key_L) {
        if (player->Speed() + 1 != 0)
            player->Speed(player->Speed() + 1);
        else
            player->Speed(player->Speed() + 2);
 
        if (player->Mode() == openshot::PLAYBACK_PAUSED)
            player->Play();
 
    }
    else if (event->key() == Qt::Key_Left) {
        if (player->Speed() != 0)
            player->Speed(0);
        player->Seek(player->Position() - 1);
    }
    else if (event->key() == Qt::Key_Right) {
        if (player->Speed() != 0)
            player->Speed(0);
        player->Seek(player->Position() + 1);
    }
    else if (event->key() == Qt::Key_Escape) {
        QWidget *pWin = QApplication::activeWindow();
        pWin->hide();
 
        player->Stop();
 
        QApplication::quit();
    }
 
    event->accept();
    QWidget::keyPressEvent(event);
}
 
void PlayerDemo::open(bool checked)
{
    // Get filename of media files
    const QString filename = QFileDialog::getOpenFileName(this, "Open Video File");
    if (filename.isEmpty()) return;
 
    // Open *.osp file (read JSON into variable)
    QString project_json = "";
    if (filename.endsWith(".osp")) {
        QFile file(filename);
        if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
            return;
        while (!file.atEnd()) {
            QByteArray line = file.readLine();
            project_json += line;
        }
 
        // Set source from project JSON
        player->SetTimelineSource(project_json.toStdString());
    } else {
        // Set source from filepath
        player->SetSource(filename.toStdString());
    }
 
    // Set aspect ratio of widget
    video->SetAspectRatio(player->Reader()->info.display_ratio, player->Reader()->info.pixel_ratio);
 
    // Play video
    player->Play();
}