137 lines
3.0 KiB
C++
137 lines
3.0 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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Snap.h
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Dominic Mazzoni
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Create one of these objects at the beginning of a click/drag.
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Then, given a time corresponding to the current mouse cursor
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position, it will tell you the closest place to snap to.
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**********************************************************************/
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#ifndef __AUDACITY_SNAP__
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#define __AUDACITY_SNAP__
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#include <vector>
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#include <wx/defs.h>
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#include <wx/string.h>
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#include "widgets/NumericTextCtrl.h"
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class AudacityProject;
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class Track;
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class TrackArray;
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class TrackClipArray;
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class WaveClip;
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class WaveTrack;
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class TrackList;
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class ZoomInfo;
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class TrackClip
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{
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public:
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TrackClip(Track *t, WaveClip *c);
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#ifndef __AUDACITY_OLD_STD__
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// TrackClip(TrackClip&&) = default; is not supported by vs2013/5 so explicit version needed
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TrackClip(TrackClip&&);
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#endif
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~TrackClip();
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Track *track;
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Track *origTrack;
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WaveTrack *dstTrack;
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WaveClip *clip;
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movable_ptr<WaveClip> holder;
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};
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class TrackClipArray : public std::vector < TrackClip > {};
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enum
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{
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SNAP_OFF,
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SNAP_NEAREST,
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SNAP_PRIOR
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};
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const int kPixelTolerance = 4;
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class SnapPoint
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{
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public:
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explicit
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SnapPoint(double t_ = 0.0, const Track *track_ = nullptr)
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: t(t_), track(track_)
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{
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}
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double t;
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const Track *track;
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};
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using SnapPointArray = std::vector < SnapPoint > ;
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class SnapManager
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{
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public:
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SnapManager(TrackList *tracks,
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const ZoomInfo *zoomInfo,
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const TrackClipArray *clipExclusions = NULL,
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const TrackArray *trackExclusions = NULL,
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bool noTimeSnap = false,
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int pixelTolerance = kPixelTolerance);
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~SnapManager();
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// The track may be NULL.
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// Returns true if the output time is not the same as the input.
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// Pass rightEdge=true if this is the right edge of a selection,
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// and false if it's the left edge.
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bool Snap(Track *currentTrack,
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double t,
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bool rightEdge,
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double *outT,
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bool *snappedPoint,
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bool *snappedTime);
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static wxArrayString GetSnapLabels();
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static wxArrayString GetSnapValues();
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static const wxString & GetSnapValue(int index);
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static int GetSnapIndex(const wxString & value);
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private:
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void Reinit();
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void CondListAdd(double t, const Track *track);
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double Get(size_t index);
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wxInt64 PixelDiff(double t, size_t index);
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size_t Find(double t, size_t i0, size_t i1);
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size_t Find(double t);
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bool SnapToPoints(Track *currentTrack, double t, bool rightEdge, double *outT);
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private:
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const AudacityProject *mProject;
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TrackList *mTracks;
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const TrackClipArray *mClipExclusions;
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const TrackArray *mTrackExclusions;
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const ZoomInfo *mZoomInfo;
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int mPixelTolerance;
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bool mNoTimeSnap;
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double mEpsilon;
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SnapPointArray mSnapPoints;
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// Info for snap-to-time
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NumericConverter mConverter;
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bool mSnapToTime;
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int mSnapTo;
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double mRate;
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wxString mFormat;
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};
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#endif
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