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OpenBoard/src/core/UBSceneCache.h

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2.0 KiB

#ifndef UBSCENECACHE_H
#define UBSCENECACHE_H
#include <QtCore>
#include "domain/UBGraphicsScene.h"
class UBDocumentProxy;
class UBGraphicsScene;
class UBGraphicsScene;
class UBSceneCacheID
{
public:
UBSceneCacheID()
: documentProxy(0)
, pageIndex(-1)
{
// NOOP
}
UBSceneCacheID(UBDocumentProxy* pDocumentProxy, int pPageIndex)
{
documentProxy = pDocumentProxy;
pageIndex = pPageIndex;
}
UBDocumentProxy* documentProxy;
int pageIndex;
};
inline bool operator==(const UBSceneCacheID &id1, const UBSceneCacheID &id2)
{
return id1.documentProxy == id2.documentProxy
&& id1.pageIndex == id2.pageIndex;
}
inline uint qHash(const UBSceneCacheID &id)
{
return qHash(id.pageIndex);
}
class UBSceneCache : public QHash<UBSceneCacheID, UBGraphicsScene*>
{
public:
UBSceneCache();
virtual ~UBSceneCache();
UBGraphicsScene* createScene(UBDocumentProxy* proxy, int pageIndex);
void insert (UBDocumentProxy* proxy, int pageIndex, UBGraphicsScene* scene );
bool contains(UBDocumentProxy* proxy, int pageIndex) const;
UBGraphicsScene* value(UBDocumentProxy* proxy, int pageIndex);
UBGraphicsScene* value(const UBSceneCacheID& key) const
{
return QHash<UBSceneCacheID, UBGraphicsScene*>::value(key);
}
void removeScene(UBDocumentProxy* proxy, int pageIndex);
void removeAllScenes(UBDocumentProxy* proxy);
void moveScene(UBDocumentProxy* proxy, int sourceIndex, int targetIndex);
void shiftUpScenes(UBDocumentProxy* proxy, int startIncIndex, int endIncIndex);
private:
void internalMoveScene(UBDocumentProxy* proxy, int sourceIndex, int targetIndex);
void dumpCacheContent();
void compactCache();
int mCachedSceneCount;
QQueue<UBSceneCacheID> mCachedKeyFIFO;
QHash<UBSceneCacheID, UBGraphicsScene::SceneViewState> mViewStates;
};
#endif // UBSCENECACHE_H