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//=============================================================================
// MuseScore
// Music Composition & Notation
//
// Copyright (C) 2002-2011 Werner Schweer
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2
// as published by the Free Software Foundation and appearing in
// the file LICENCE.GPL
//=============================================================================
#ifndef __IMAGE_CACHE_H__
#define __IMAGE_CACHE_H__
namespace Ms {
class Image;
class Score;
//---------------------------------------------------------
// ImageStoreItem
//---------------------------------------------------------
class ImageStoreItem {
QList<Image*> _references;
QString _path; // original location of image
QString _type; // image type (file extension)
QByteArray _buffer;
QByteArray _hash; // 16 byte md4 hash of _buffer
public:
ImageStoreItem(const QString& p);
void dereference(Image*);
void reference(Image*);
const QString& path() const { return _path; }
QByteArray& buffer() { return _buffer; }
const QByteArray& buffer() const { return _buffer; }
bool loaded() const { return !_buffer.isEmpty(); }
void setPath(const QString& val);
bool isUsed(Score*) const;
bool isUsed() const { return !_references.empty(); }
void load();
QString hashName() const;
const QByteArray& hash() const { return _hash; }
void set(const QByteArray& b, const QByteArray& h) { _buffer = b; _hash = h; }
};
//---------------------------------------------------------
// ImageStore
//---------------------------------------------------------
class ImageStore {
typedef std::vector<ImageStoreItem*> ItemList;
ItemList _items;
public:
ImageStore() = default;
ImageStore(const ImageStore&) = delete;
ImageStore& operator=(const ImageStore&) = delete;
~ImageStore();
ImageStoreItem* getImage(const QString& path) const;
ImageStoreItem* add(const QString& path, const QByteArray&);
void clearUnused();
typedef ItemList::iterator iterator;
typedef ItemList::const_iterator const_iterator;
iterator begin() { return _items.begin(); }
const_iterator begin() const { return _items.begin(); }
iterator end() { return _items.end(); }
const_iterator end() const { return _items.end(); }
};
extern ImageStore imageStore; // this is the global imageStore
} // namespace Ms
#endif
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