88 lines
2.1 KiB
C++
88 lines
2.1 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 <wx/defs.h>
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#include <wx/dynarray.h>
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#include "Track.h"
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#include "widgets/NumericTextCtrl.h"
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class TrackClipArray;
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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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class SnapPoint {
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public:
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SnapPoint(double t, Track *track) {
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this->t = t;
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this->track = track;
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}
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double t;
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Track *track;
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};
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WX_DEFINE_SORTED_ARRAY(SnapPoint *, SnapPointArray);
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class SnapManager {
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public:
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SnapManager(TrackList *tracks, TrackClipArray *exclusions,
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double zoom, int pixelTolerance, bool noTimeSnap = false);
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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 *out_t,
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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 CondListAdd(double t, Track *tr);
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double Get(int index);
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double Diff(double t, int index);
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int Find(double t, int i0, int i1);
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int Find(double t);
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bool SnapToPoints(Track *currentTrack, double t, bool rightEdge,
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double *out_t);
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double mEpsilon;
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double mTolerance;
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double mZoom;
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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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};
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#endif
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