Mercurial > hg > svcore
view base/Selection.h @ 335:02d2ad95ea52 spectrogram-cache-rejig
* Get storage advice for each cache in an FFT data server. Allows us to be
more confident about the actual memory situation and cut over from memory
to disc part way through an FFT calculation if necessary. StorageAdviser
is now a bit too optimistic though (it's too keen to allocate large numbers
of small blocks in memory).
author | Chris Cannam |
---|---|
date | Tue, 13 Nov 2007 13:54:10 +0000 |
parents | 70a232b1f12a |
children | 3efc20c59a94 6a94bb528e9d |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2006 Chris Cannam. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #ifndef _SELECTION_H_ #define _SELECTION_H_ #include <cstddef> #include <set> #include "XmlExportable.h" class Selection { public: Selection(); Selection(size_t startFrame, size_t endFrame); Selection(const Selection &); Selection &operator=(const Selection &); virtual ~Selection(); bool isEmpty() const; size_t getStartFrame() const; size_t getEndFrame() const; bool contains(size_t frame) const; bool operator<(const Selection &) const; bool operator==(const Selection &) const; protected: size_t m_startFrame; size_t m_endFrame; }; class MultiSelection : public XmlExportable { public: MultiSelection(); virtual ~MultiSelection(); typedef std::set<Selection> SelectionList; const SelectionList &getSelections() const; void setSelection(const Selection &selection); void addSelection(const Selection &selection); void removeSelection(const Selection &selection); void clearSelections(); void getExtents(size_t &startFrame, size_t &endFrame) const; /** * Return the selection that contains a given frame. * If defaultToFollowing is true, and if the frame is not in a * selected area, return the next selection after the given frame. * Return the empty selection if no appropriate selection is found. */ Selection getContainingSelection(size_t frame, bool defaultToFollowing) const; virtual void toXml(QTextStream &stream, QString indent = "", QString extraAttributes = "") const; protected: SelectionList m_selections; }; #endif