SpectrumView::SpectralDataSaver Class Reference

Inheritance diagram for SpectrumView::SpectralDataSaver:

Collaboration diagram for SpectrumView::SpectralDataSaver:

Public Member Functions
	SpectralDataSaver (SpectrumView &view)
void	Init (AudacityProject &project, bool clearAll) override
	~SpectralDataSaver () override
Public Member Functions inherited from BrushHandle::StateSaver
virtual	~StateSaver ()
virtual void	Init (AudacityProject &project, bool clearAll)=0
void	Commit ()

Private Attributes
SpectrumView &	mView
AudacityProject *	mpProject = nullptr

Additional Inherited Members
Protected Attributes inherited from BrushHandle::StateSaver
bool	mCommitted = false

Detailed Description

Definition at line 74 of file SpectrumView.cpp.

Constructor & Destructor Documentation

SpectralDataSaver()

SpectrumView::SpectralDataSaver::SpectralDataSaver ( SpectrumView &  view )

inlineexplicit

Definition at line 76 of file SpectrumView.cpp.

      : mView{ view }
   {}

~SpectralDataSaver()

SpectrumView::SpectralDataSaver::~SpectralDataSaver ( )

inlineoverride

Definition at line 104 of file SpectrumView.cpp.

   {
      if (mpProject)
         ForAll( *mpProject, [this](SpectrumView &view){
            if (mCommitted) {
               // Discard all backups
               view.mpBackupSpectralData = {};
            }
            else {
               // Restore all
               if (auto &pBackupData = view.mpBackupSpectralData) {
                  view.mpSpectralData->CopyFrom(*pBackupData);
                  pBackupData.reset();
               }
            }
         });
   }

References SpectrumView::ForAll(), BrushHandle::StateSaver::mCommitted, SpectrumView::mpBackupSpectralData, and mpProject.

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Member Function Documentation

Init()

void SpectrumView::SpectralDataSaver::Init ( AudacityProject &  project, bool  clearAll  )

inlineoverridevirtual

Implements BrushHandle::StateSaver.

Definition at line 80 of file SpectrumView.cpp.

   {
      mpProject = &project;
      ForAll( project, [this, clearAll](SpectrumView &view){
         auto pOldData = view.mpSpectralData;
         if (clearAll) {
            auto &pNewData = view.mpBackupSpectralData =
               std::make_shared<SpectralData>(pOldData->GetSR());
            pNewData->CopyFrom(*pOldData);
            pOldData->clearAllData();
         }
         else {
            // Back up one view only
            if (&mView == &view) {
               auto &pNewData = view.mpBackupSpectralData =
                  std::make_shared<SpectralData>(pOldData->GetSR());
               pNewData->CopyFrom( *pOldData );
            }
            else
               view.mpBackupSpectralData = {};
         }
      });
   }

References SpectrumView::ForAll(), SpectrumView::mpBackupSpectralData, mpProject, SpectrumView::mpSpectralData, mView, and project.

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Member Data Documentation

mpProject

AudacityProject* SpectrumView::SpectralDataSaver::mpProject = nullptr

private

Definition at line 124 of file SpectrumView.cpp.

Referenced by Init(), and ~SpectralDataSaver().

mView

SpectrumView& SpectrumView::SpectralDataSaver::mView

private

Definition at line 123 of file SpectrumView.cpp.

Referenced by Init().

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

• SpectrumView.cpp