File indexing completed on 2024-04-28 04:21:27

 /* SPDX-FileCopyrightText: 2012-2020 The KPhotoAlbum Development Team
 
    SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "VideoShooter.h"
 
 #include "InfoBox.h"
 #include "VideoDisplay.h"
 #include "ViewerWidget.h"
 
 #include <BackgroundJobs/HandleVideoThumbnailRequestJob.h>
 #include <DB/ImageInfo.h>
 #include <MainWindow/Window.h>
 #include <kpathumbnails/ThumbnailCache.h>
 
 #include <QApplication>
 #include <QTimer>
 
 /**
   \class Viewer::VideoShooter
   \brief Utility class for making screenshots from a video
 
   While Phonon has an API for implementing a screenshot, it unfortunately doesn't work.
   We therefore need to make a screenshot using QPixmap::grabWindow (grabWidget doesn't work either).
   As grabWindow takes the pixels directly from the window, we need to make sure that it isn't covered with the infobox or the context menu.
   This class takes care of that, namely waiting for the context menu to disapear, hide the infobox, stop the video, and then shoot the snapshot
  */
 
 Viewer::VideoShooter *Viewer::VideoShooter::s_instance = nullptr;
 
 Viewer::VideoShooter::VideoShooter()
 {
 }
 
 void Viewer::VideoShooter::go(const DB::ImageInfoPtr &info, Viewer::ViewerWidget *viewer)
 {
     if (!s_instance)
         s_instance = new VideoShooter;
 
     s_instance->start(info, viewer);
 }
 
 void Viewer::VideoShooter::start(const DB::ImageInfoPtr &info, ViewerWidget *viewer)
 {
     qApp->setOverrideCursor(QCursor(Qt::BusyCursor));
     m_info = info;
     m_viewer = viewer;
 
     // Hide the info box
     m_infoboxVisible = m_viewer->m_infoBox->isVisible();
     if (m_infoboxVisible)
         m_viewer->m_infoBox->hide();
 
     // Stop playback
     m_wasPlaying = !m_viewer->m_videoDisplay->isPaused();
     if (m_wasPlaying)
         m_viewer->m_videoDisplay->playPause();
 
     // Wait a bit for the context menu to disapear
     QTimer::singleShot(200, this, &VideoShooter::doShoot);
 }
 
 void Viewer::VideoShooter::doShoot()
 {
     // Make the screenshot and save it
     const QImage image = m_viewer->m_videoDisplay->screenShoot();
     const DB::FileName fileName = m_info->fileName();
     MainWindow::Window::theMainWindow()->thumbnailCache()->removeThumbnail(fileName);
     BackgroundJobs::HandleVideoThumbnailRequestJob::saveFullScaleFrame(fileName, image);
 
     // Show the infobox again
     if (m_infoboxVisible)
         m_viewer->m_infoBox->show();
 
     // Restart the video
     if (m_wasPlaying)
         m_viewer->m_videoDisplay->playPause();
 
     qApp->restoreOverrideCursor();
 }
 // vi:expandtab:tabstop=4 shiftwidth=4:
 
 #include "moc_VideoShooter.cpp"