NoteTrackShifter Class Reference

Inheritance diagram for NoteTrackShifter:

Collaboration diagram for NoteTrackShifter:

Public Member Functions
	NoteTrackShifter (NoteTrack &track)
	~NoteTrackShifter () override
Track &	GetTrack () const override
	There is always an associated track. More...
HitTestResult	HitTest (double time, const ViewInfo &viewInfo, HitTestParams *) override
	Decide how shift behaves, based on the track that is clicked in. More...
void	SelectInterval (TimeInterval interval) override
	Notifies the shifter that a region is selected, so it may update its fixed and moving intervals. More...
bool	SyncLocks () override
	Whether unfixing of an interval should propagate to all overlapping intervals in the sync lock group. More...
double	AdjustT0 (double t0) const override
Public Member Functions inherited from TrackShifter
	TrackShifter ()
	TrackShifter (const TrackShifter &)=delete
TrackShifter &	operator= (const TrackShifter &)=delete
virtual	~TrackShifter ()=0
virtual Track &	GetTrack () const =0
	There is always an associated track. More...
virtual HitTestResult	HitTest (double time, const ViewInfo &viewInfo, HitTestParams *pParams=nullptr)=0
	Decide how shift behaves, based on the track that is clicked in. More...
const Intervals &	FixedIntervals () const
	Return special intervals of the track that will not move. More...
const Intervals &	MovingIntervals () const
	Return special intervals of the track that may move. More...
void	UnfixIntervals (std::function< bool(const ChannelGroupInterval &)> pred)
	Change intervals satisfying a predicate from fixed to moving. More...
void	UnfixAll ()
	Change all intervals from fixed to moving. More...
virtual void	SelectInterval (TimeInterval interval)
	Notifies the shifter that a region is selected, so it may update its fixed and moving intervals. More...
virtual bool	SyncLocks ()=0
	Whether unfixing of an interval should propagate to all overlapping intervals in the sync lock group. More...
virtual double	HintOffsetLarger (double desiredOffset)
	Given amount to shift by horizontally, maybe adjust it from zero to suggest minimum distance. More...
virtual double	QuantizeOffset (double desiredOffset)
	Given amount to shift by horizontally, do any preferred rounding, before placement constraint checks. More...
virtual double	AdjustOffsetSmaller (double desiredOffset)
	Given amount to shift by horizontally, maybe adjust it toward zero to meet placement constraints. More...
virtual bool	MayMigrateTo (Track &otherTrack)
virtual Intervals	Detach ()
	Remove all moving intervals from the track, if possible. More...
virtual bool	AdjustFit (const Track &otherTrack, const Intervals &intervals, double &desiredOffset, double tolerance)
virtual bool	Attach (Intervals intervals, double offset)
	Put moving intervals into the track, which may have migrated from another. More...
virtual bool	FinishMigration ()
	When dragging is done, do (once) the final steps of migration (which may be expensive) More...
virtual void	DoHorizontalOffset (double offset)
virtual double	AdjustT0 (double t0) const

Private Attributes
const std::shared_ptr< NoteTrack >	mpTrack

Additional Inherited Members
Public Types inherited from TrackShifter
enum class	HitTestResult { Miss , Selection , Intervals , Track }
	Possibilities for HitTest on the clicked track. More...
using	Intervals = std::vector< std::shared_ptr< ChannelGroupInterval > >
Protected Member Functions inherited from TrackShifter
void	CommonSelectInterval (TimeInterval interval)
bool	CommonMayMigrateTo (Track &otherTrack)
void	InitIntervals ()
	Derived class constructor can initialize all intervals reported by the track as fixed, none moving. More...
bool	AllFixed () const
Protected Attributes inherited from TrackShifter
Intervals	mFixed
Intervals	mMoving

Detailed Description

Definition at line 10 of file NoteTrackShifter.cpp.

Constructor & Destructor Documentation

NoteTrackShifter()

NoteTrackShifter::NoteTrackShifter ( NoteTrack &  track )

inline

Definition at line 12 of file NoteTrackShifter.cpp.

      : mpTrack{ track.SharedPointer<NoteTrack>() }
   {
      InitIntervals();
   }

References TrackShifter::InitIntervals().

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~NoteTrackShifter()

NoteTrackShifter::~NoteTrackShifter ( )

inlineoverride

Definition at line 17 of file NoteTrackShifter.cpp.

{}

Member Function Documentation

AdjustT0()

double NoteTrackShifter::AdjustT0 ( double  t0 ) const

inlineoverridevirtual

Reimplemented from TrackShifter.

Definition at line 41 of file NoteTrackShifter.cpp.

   {
      auto& track = GetTrack();
      if (t0 < track.GetStartTime())
         t0 = track.GetStartTime();
      if (t0 > track.GetEndTime())
         t0 = track.GetEndTime();
 
      return t0;
   }

References GetTrack().

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GetTrack()

Track & NoteTrackShifter::GetTrack ( ) const

inlineoverridevirtual

There is always an associated track.

Implements TrackShifter.

Definition at line 18 of file NoteTrackShifter.cpp.

{ return *mpTrack; }

References mpTrack.

Referenced by AdjustT0().

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HitTest()

HitTestResult NoteTrackShifter::HitTest ( double  time, const ViewInfo &  viewInfo, HitTestParams *  pParams  )

inlineoverridevirtual

Decide how shift behaves, based on the track that is clicked in.

If the return value is Intervals or Selection, then some intervals may be marked moving as a side effect

Precondition

!pParams || (time == pParams->viewInfo.PositionToTime(pParams->xx, pParams->rect.x))

Parameters

time	A time value to test
pParams	Optional extra information

Implements TrackShifter.

Definition at line 20 of file NoteTrackShifter.cpp.

   {
      UnfixAll();
      auto t0 = viewInfo.selectedRegion.t0();
      auto t1 = viewInfo.selectedRegion.t1();
      if ( mpTrack->IsSelected() && time >= t0 && time < t1 )
         return HitTestResult::Selection;
      else
         return HitTestResult::Intervals;
   }

References TrackShifter::Intervals, mpTrack, ViewInfo::selectedRegion, TrackShifter::Selection, NotifyingSelectedRegion::t0(), NotifyingSelectedRegion::t1(), and TrackShifter::UnfixAll().

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SelectInterval()

void NoteTrackShifter::SelectInterval ( TimeInterval  interval )

inlineoverridevirtual

Notifies the shifter that a region is selected, so it may update its fixed and moving intervals.

Default behavior: if any part of the track is selected, unfix all parts of it.

Reimplemented from TrackShifter.

Definition at line 32 of file NoteTrackShifter.cpp.

   {
      CommonSelectInterval(interval);
   }

References TrackShifter::CommonSelectInterval().

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SyncLocks()

bool NoteTrackShifter::SyncLocks ( )

inlineoverridevirtual

Whether unfixing of an interval should propagate to all overlapping intervals in the sync lock group.

Implements TrackShifter.

Definition at line 37 of file NoteTrackShifter.cpp.

{ return true; }

Member Data Documentation

mpTrack

const std::shared_ptr<NoteTrack> NoteTrackShifter::mpTrack

private

Definition at line 53 of file NoteTrackShifter.cpp.

Referenced by GetTrack(), and HitTest().

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The documentation for this class was generated from the following file:

• NoteTrackShifter.cpp