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/* SPDX-License-Identifier: GPL-2.0-or-later */
/**********************************************************************
Audacity: A Digital Audio Editor
@file ProjectTimeSignature.cpp
Dmitry Vedenko
**********************************************************************/
#include "ProjectTimeSignature.h"
#include "Beats.h"
#include "Project.h"
#include "XMLAttributeValueView.h"
#include "XMLWriter.h"
static const AttachedProjectObjects::RegisteredFactory key
{
[](AudacityProject &project)
{ return std::make_shared<ProjectTimeSignature>(); }
};
ProjectTimeSignature& ProjectTimeSignature::Get(AudacityProject& project)
{
return project.AttachedObjects::Get<ProjectTimeSignature&>(key);
}
const ProjectTimeSignature&
ProjectTimeSignature::Get(const AudacityProject& project)
{
return Get(const_cast<AudacityProject&>(project));
}
ProjectTimeSignature::ProjectTimeSignature()
: mTempo { BeatsPerMinute.Read() }
, mUpperTimeSignature { UpperTimeSignature.Read() }
, mLowerTimeSignature { LowerTimeSignature.Read() }
{}
ProjectTimeSignature::~ProjectTimeSignature() = default;
double ProjectTimeSignature::GetTempo() const
{
return mTempo;
}
void ProjectTimeSignature::SetTempo(double tempo)
{
if (mTempo != tempo)
{
mTempo = tempo;
BeatsPerMinute.Write(tempo);
gPrefs->Flush();
PublishSignatureChange();
}
}
int ProjectTimeSignature::GetUpperTimeSignature() const
{
return mUpperTimeSignature;
}
void ProjectTimeSignature::SetUpperTimeSignature(int upperTimeSignature)
{
if (mUpperTimeSignature != upperTimeSignature)
{
mUpperTimeSignature = upperTimeSignature;
UpperTimeSignature.Write(upperTimeSignature);
gPrefs->Flush();
PublishSignatureChange();
}
}
int ProjectTimeSignature::GetLowerTimeSignature() const
{
return mLowerTimeSignature;
}
void ProjectTimeSignature::SetLowerTimeSignature(int lowerTimeSignature)
{
if (mLowerTimeSignature != lowerTimeSignature)
{
mLowerTimeSignature = lowerTimeSignature;
LowerTimeSignature.Write(lowerTimeSignature);
gPrefs->Flush();
PublishSignatureChange();
}
}
double ProjectTimeSignature::GetQuarterDuration() const
{
return 60.0 / mTempo;
}
double ProjectTimeSignature::GetBeatDuration() const
{
return GetQuarterDuration() * 4.0 / mLowerTimeSignature;
}
double ProjectTimeSignature::GetBarDuration() const
{
return GetBeatDuration() * mUpperTimeSignature;
}
void ProjectTimeSignature::PublishSignatureChange()
{
Publish(TimeSignatureChangedMessage { mTempo, mUpperTimeSignature,
mLowerTimeSignature });
}
static ProjectFileIORegistry::AttributeWriterEntry entry {
[](const AudacityProject &project, XMLWriter &xmlFile){
auto& formats = ProjectTimeSignature::Get(project);
xmlFile.WriteAttr(wxT("time_signature_tempo"), formats.GetTempo());
xmlFile.WriteAttr(wxT("time_signature_upper"), formats.GetUpperTimeSignature());
xmlFile.WriteAttr(wxT("time_signature_lower"), formats.GetLowerTimeSignature());
}
};
static ProjectFileIORegistry::AttributeReaderEntries entries {
// Just a pointer to function, but needing overload resolution as non-const:
(ProjectTimeSignature & (*)(AudacityProject&)) & ProjectTimeSignature::Get,
{
{ "time_signature_tempo", [](auto& signature, auto value)
{ signature.SetTempo(value.Get(BeatsPerMinute.Read())); } },
{ "time_signature_upper", [](auto& signature, auto value)
{ signature.SetUpperTimeSignature(value.Get(UpperTimeSignature.Read())); } },
{ "time_signature_lower", [](auto& signature, auto value)
{ signature.SetLowerTimeSignature(value.Get(LowerTimeSignature.Read())); } },
}
};
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