File indexing completed on 2024-05-05 04:22:00

 // SPDX-FileCopyrightText: 2003-2010 Jesper K. Pedersen <blackie@kde.org>
 // SPDX-FileCopyrightText: 2022 Johannes Zarl-Zierl <johannes@zarl-zierl.at>
 //
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #ifndef IMAGEMANAGER_ASYNCLOADER_H
 #define IMAGEMANAGER_ASYNCLOADER_H
 
 #include "RequestQueue.h"
 #include "enums.h"
 
 #include <MainWindow/Window.h>
 
 #include <QImage>
 #include <QList>
 #include <QMutex>
 #include <QWaitCondition>
 
 class QEvent;
 
 namespace ImageManager
 {
 
 class ImageRequest;
 class ImageClientInterface;
 class ImageLoaderThread;
 
 // This class needs to inherit QObject to be capable of receiving events.
 class AsyncLoader : public QObject
 {
     Q_OBJECT
 
 public:
     static AsyncLoader *instance();
 
     // Request to load an image. The Manager takes over the ownership of
     // the request (and may delete it anytime).
     bool load(ImageRequest *request);
 
     // Stop loading all images requested by the given client.
     void stop(ImageClientInterface *, StopAction action = StopAll);
     int activeCount() const;
     bool isExiting() const;
 
 protected:
     void customEvent(QEvent *ev) override;
     bool loadVideo(ImageRequest *);
     void loadImage(ImageRequest *);
 
 private:
     friend class ImageLoaderThread; // may call 'next()'
     friend class MainWindow::Window; // may call 'requestExit()'
     void init();
 
     ImageRequest *next();
 
     void requestExit();
 
     static AsyncLoader *s_instance;
 
     RequestQueue m_loadList;
     QWaitCondition m_sleepers;
     // m_lock protects m_loadList and m_currentLoading
     mutable QMutex m_lock;
     QSet<ImageRequest *> m_currentLoading;
     QImage m_brokenImage;
     QList<ImageLoaderThread *> m_threadList;
     bool m_exitRequested = false;
 };
 }
 
 #endif /* IMAGEMANAGER_ASYNCLOADER_H */
 
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