Mercurial > hg > svcore
view base/Selection.h @ 1353:2001fe23e449 3.0-integration
Fixes and updates for 32-bit Windows build
author | Chris Cannam |
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date | Mon, 09 Jan 2017 11:53:06 +0000 |
parents | cc27f35aa75c |
children | 6e9615bde1f9 |
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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" #include "BaseTypes.h" /** * A selection object simply represents a range in time, via start and * end frame. * * The end frame is the index of the frame just *after* the end of the * selection. For example a selection of length 10 frames starting at * time 0 will have start frame 0 and end frame 10. This will be * contiguous with (rather than overlapping with) a selection that * starts at frame 10. * * Any selection with equal start and end frames is empty, * representing "no selection". All empty selections are equal under * the comparison operators. The default constructor makes an empty * selection with start and end frames equal to zero. */ class Selection { public: Selection(); Selection(sv_frame_t startFrame, sv_frame_t endFrame); Selection(const Selection &); Selection &operator=(const Selection &); virtual ~Selection(); bool isEmpty() const; sv_frame_t getStartFrame() const; sv_frame_t getEndFrame() const; bool contains(sv_frame_t frame) const; bool operator<(const Selection &) const; bool operator==(const Selection &) const; protected: sv_frame_t m_startFrame; sv_frame_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(sv_frame_t &startFrame, sv_frame_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(sv_frame_t frame, bool defaultToFollowing) const; virtual void toXml(QTextStream &stream, QString indent = "", QString extraAttributes = "") const; protected: SelectionList m_selections; }; #endif