File indexing completed on 2024-05-12 16:01:45

 /*
  *  SPDX-FileCopyrightText: 2017 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "KisAsyncAnimationRendererBase.h"
 
 #include <QTimer>
 #include <QThread>
 
 #include "kis_image.h"
 #include "kis_image_animation_interface.h"
 #include "kis_signal_auto_connection.h"
 #include "kis_image_config.h"
 
 struct KisCancelReasonStaticRegistrar {
     KisCancelReasonStaticRegistrar() {
         qRegisterMetaType<KisAsyncAnimationRendererBase::CancelReason>("KisAsyncAnimationRendererBase::CancelReason");
     }
 };
 
 static KisCancelReasonStaticRegistrar __registrar;
 
 struct KRITAUI_NO_EXPORT KisAsyncAnimationRendererBase::Private
 {
 
     KisSignalAutoConnectionsStore imageRequestConnections;
     QTimer regenerationTimeout;
 
     KisImageSP requestedImage;
     int requestedFrame = -1;
     bool isCancelled = false;
     KisRegion requestedRegion;
 };
 
 KisAsyncAnimationRendererBase::KisAsyncAnimationRendererBase(QObject *parent)
     : QObject(parent),
       m_d(new Private())
 {
     connect(&m_d->regenerationTimeout, SIGNAL(timeout()), SLOT(slotFrameRegenerationTimedOut()));
 
     KisImageConfig cfg(true);
 
     m_d->regenerationTimeout.setSingleShot(true);
     m_d->regenerationTimeout.setInterval(cfg.frameRenderingTimeout());
 }
 
 KisAsyncAnimationRendererBase::~KisAsyncAnimationRendererBase()
 {
 
 }
 
 void KisAsyncAnimationRendererBase::startFrameRegeneration(KisImageSP image, int frame, const KisRegion &regionOfInterest, Flags flags)
 {
     KIS_SAFE_ASSERT_RECOVER_NOOP(QThread::currentThread() == this->thread());
 
     m_d->requestedImage = image;
     m_d->requestedFrame = frame;
     m_d->isCancelled = false;
     m_d->requestedRegion = !regionOfInterest.isEmpty() ? regionOfInterest : image->bounds();
 
     KisImageAnimationInterface *animation = m_d->requestedImage->animationInterface();
 
     m_d->imageRequestConnections.clear();
     m_d->imageRequestConnections.addConnection(
                 animation, SIGNAL(sigFrameReady(int)),
                 this, SLOT(slotFrameRegenerationFinished(int)),
                 Qt::DirectConnection);
 
     m_d->imageRequestConnections.addConnection(
                 animation, SIGNAL(sigFrameCancelled()),
                 this, SLOT(slotFrameRegenerationCancelled()),
                 Qt::AutoConnection);
 
     m_d->regenerationTimeout.start();
     animation->requestFrameRegeneration(m_d->requestedFrame, m_d->requestedRegion, flags & Cancellable);
 }
 
 void KisAsyncAnimationRendererBase::startFrameRegeneration(KisImageSP image, int frame, Flags flags)
 {
     startFrameRegeneration(image, frame, KisRegion(), flags);
 }
 
 bool KisAsyncAnimationRendererBase::isActive() const
 {
     return m_d->requestedImage;
 }
 
 void KisAsyncAnimationRendererBase::cancelCurrentFrameRendering(CancelReason cancelReason)
 {
     KIS_SAFE_ASSERT_RECOVER_RETURN(m_d->requestedImage);
     frameCancelledCallback(m_d->requestedFrame, cancelReason);
 }
 
 void KisAsyncAnimationRendererBase::slotFrameRegenerationCancelled()
 {
     // the cancel can arrive in async way
     if (!m_d->requestedImage) return;
     frameCancelledCallback(m_d->requestedFrame, RenderingFailed);
 }
 
 void KisAsyncAnimationRendererBase::slotFrameRegenerationTimedOut()
 {
     // the timeout can arrive in async way
     if (!m_d->requestedImage) return;
     frameCancelledCallback(m_d->requestedFrame, RenderingTimedOut);
 }
 
 void KisAsyncAnimationRendererBase::slotFrameRegenerationFinished(int frame)
 {
     // We might have already cancelled the regeneration. We don't check
     // isCancelled flag here because this code runs asynchronously.
     if (!m_d->requestedImage) return;
 
     // WARNING: executed in the context of image worker thread!
 
     // probably a bit too strict...
     KIS_SAFE_ASSERT_RECOVER_NOOP(QThread::currentThread() != this->thread());
 
     frameCompletedCallback(frame, m_d->requestedRegion);
 }
 
 void KisAsyncAnimationRendererBase::notifyFrameCompleted(int frame)
 {
     KIS_SAFE_ASSERT_RECOVER_NOOP(QThread::currentThread() == this->thread());
 
     // the image events can come with a delay, even after
     // the processing was cancelled
     if (m_d->isCancelled) return;
 
     KIS_SAFE_ASSERT_RECOVER_RETURN(m_d->requestedImage);
     KIS_SAFE_ASSERT_RECOVER_RETURN(m_d->requestedFrame == frame);
 
     clearFrameRegenerationState(false);
     emit sigFrameCompleted(frame);
 }
 
 void KisAsyncAnimationRendererBase::notifyFrameCancelled(int frame, CancelReason cancelReason)
 {
     KIS_SAFE_ASSERT_RECOVER_NOOP(QThread::currentThread() == this->thread());
 
     // the image events can come with a delay, even after
     // the processing was cancelled
     if (m_d->isCancelled) return;
 
     KIS_SAFE_ASSERT_RECOVER_RETURN(m_d->requestedImage);
     KIS_SAFE_ASSERT_RECOVER_RETURN(m_d->requestedFrame == frame);
 
     clearFrameRegenerationState(true);
     emit sigFrameCancelled(frame, cancelReason);
 }
 
 void KisAsyncAnimationRendererBase::clearFrameRegenerationState(bool isCancelled)
 {
     // TODO: for some reason we mark the process as cancelled in any case, and it
     //       seem to be a correct behavior
     Q_UNUSED(isCancelled);
 
     m_d->imageRequestConnections.clear();
     m_d->requestedImage = 0;
     m_d->requestedFrame = -1;
     m_d->regenerationTimeout.stop();
     m_d->isCancelled = true;
     m_d->requestedRegion = KisRegion();
 }
 
 KisImageSP KisAsyncAnimationRendererBase::requestedImage() const
 {
     return m_d->requestedImage;
 }