File indexing completed on 2025-01-05 03:57:25

 /* ============================================================
  *
  * This file is a part of digiKam project
  * https://www.digikam.org
  *
  * Date        : 2017-06-04
  * Description : A label to show transition preview
  *
  * SPDX-FileCopyrightText: 2017-2024 by Gilles Caulier <caulier dot gilles at gmail dot com>
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  *
  * ============================================================ */
 
 #include "transitionpreview.h"
 
 // Qt includes
 
 #include <QTimer>
 #include <QImage>
 #include <QPixmap>
 #include <QStandardPaths>
 
 // Local includes
 
 #include "frameutils.h"
 #include "digikam_debug.h"
 
 namespace Digikam
 {
 
 class Q_DECL_HIDDEN TransitionPreview::Private
 {
 public:
 
     explicit Private()
       : mngr         (nullptr),
         curTransition(TransitionMngr::None),
         previewSize  (QSize(192, 144))
     {
     }
 
     QTimer                    restartTimer;
     QTimer                    transTimer;
     TransitionMngr*           mngr;
     TransitionMngr::TransType curTransition;
     QSize                     previewSize;
 };
 
 TransitionPreview::TransitionPreview(QWidget* const parent)
     : QLabel(parent),
       d     (new Private)
 {
     setFixedSize(d->previewSize);
     setContentsMargins(QMargins());
     setScaledContents(false);
     setOpenExternalLinks(false);
     setFocusPolicy(Qt::NoFocus);
     setSizePolicy(QSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum));
 
     d->mngr = new TransitionMngr;
     d->mngr->setOutputSize(d->previewSize);
 
     connect(&d->transTimer, SIGNAL(timeout()),
             this, SLOT(slotProgressTransition()));
 
     connect(&d->restartTimer, SIGNAL(timeout()),
             this, SLOT(slotRestart()));
 }
 
 TransitionPreview::~TransitionPreview()
 {
     delete d;
 }
 
 void TransitionPreview::setImagesList(const QList<QUrl>& images)
 {
     if (!images.isEmpty())
     {
         d->mngr->setInImage(FrameUtils::makeFramedImage(images[0].toLocalFile(), d->previewSize));
 
         if (images.count() > 1)
         {
             d->mngr->setOutImage(FrameUtils::makeFramedImage(images[1].toLocalFile(), d->previewSize));
         }
         else
         {
             QImage blank(d->previewSize, QImage::Format_ARGB32);
             blank.fill(Qt::black);
             d->mngr->setOutImage(blank);
         }
     }
     else
     {
         QImage sample = QImage(QStandardPaths::locate(QStandardPaths::GenericDataLocation,
                                                       QLatin1String("digikam/data/sample-aix.png")));
         d->mngr->setInImage(sample);
 
         QImage blank(d->previewSize, QImage::Format_ARGB32);
         blank.fill(Qt::black);
         d->mngr->setOutImage(blank);
     }
 }
 
 void TransitionPreview::startPreview(TransitionMngr::TransType eff)
 {
     stopPreview();
     d->curTransition = eff;
     d->mngr->setTransition(eff);
     d->transTimer.start(100);
 }
 
 void TransitionPreview::slotProgressTransition()
 {
     int tmout  = -1;
     QImage img = d->mngr->currentFrame(tmout);
     setPixmap(QPixmap::fromImage(img));
 
     if (tmout == -1)
     {
         stopPreview();
         d->restartTimer.start(1000);
     }
 }
 
 void TransitionPreview::stopPreview()
 {
     d->transTimer.stop();
     d->restartTimer.stop();
 }
 
 void TransitionPreview::slotRestart()
 {
     startPreview(d->curTransition);
 }
 
 } // namespace Digikam
 
 #include "moc_transitionpreview.cpp"