Silence.cpp

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  Silence.cpp
 
  Dominic Mazzoni
 
*******************************************************************//*******************************************************************/
#include "Silence.h"
#include "EffectEditor.h"
#include "LoadEffects.h"
 
#include "ShuttleGui.h"
#include "WaveTrack.h"
#include "../widgets/NumericTextCtrl.h"
 
const ComponentInterfaceSymbol EffectSilence::Symbol
/* i18n-hint: noun */
{ XC("Silence", "generator") };
 
namespace{ BuiltinEffectsModule::Registration< EffectSilence > reg; }
 
EffectSilence::EffectSilence()
{
   SetLinearEffectFlag(true);
}
 
EffectSilence::~EffectSilence()
{
}
 
// ComponentInterface implementation
 
ComponentInterfaceSymbol EffectSilence::GetSymbol() const
{
   return Symbol;
}
 
TranslatableString EffectSilence::GetDescription() const
{
   return XO("Creates audio of zero amplitude");
}
 
ManualPageID EffectSilence::ManualPage() const
{
   return L"Silence";
}
 
 
// EffectDefinitionInterface implementation
 
EffectType EffectSilence::GetType() const
{
   return EffectTypeGenerate;
}
 
// Effect implementation
 
std::unique_ptr<EffectEditor> EffectSilence::PopulateOrExchange(
   ShuttleGui & S, EffectInstance &, EffectSettingsAccess &access,
   const EffectOutputs *)
{
   S.StartVerticalLay();
   {
      S.StartHorizontalLay();
      {
         S.AddPrompt(XXO("&Duration:"));
         auto &extra = access.Get().extra;
         mDurationT = safenew
            NumericTextCtrl(FormatterContext::SampleRateContext(mProjectRate),
                              S.GetParent(), wxID_ANY,
                              NumericConverterType_TIME(),
                              extra.GetDurationFormat(),
                              extra.GetDuration(),
                               NumericTextCtrl::Options{}
                                  .AutoPos(true));
         S.Name(XO("Duration"))
            .Position(wxALIGN_CENTER | wxALL)
            .AddWindow(mDurationT);
      }
      S.EndHorizontalLay();
   }
   S.EndVerticalLay();
 
   return nullptr;
}
 
bool EffectSilence::TransferDataToWindow(const EffectSettings &settings)
{
   mDurationT->SetValue(settings.extra.GetDuration());
 
   return true;
}
 
bool EffectSilence::TransferDataFromWindow(EffectSettings &settings)
{
   settings.extra.SetDuration(mDurationT->GetValue());
 
   return true;
}
 
bool EffectSilence::GenerateTrack(
   const EffectSettings &settings, TrackList &tmp)
{
   (*tmp.Any<WaveTrack>().begin())
      ->InsertSilence(0.0, settings.extra.GetDuration());
   return true;
}