WaveformScale.cpp

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/**********************************************************************
 
Audacity: A Digital Audio Editor
 
WaveformScale.cpp
 
Paul Licameli
 
***********************************************************************/
 
#include "WaveformScale.h"
#include "WaveTrack.h"
#include <wx/gdicmn.h>
 
static const ChannelGroup::Attachments::RegisteredFactory
key2{ [](auto &) { return std::make_unique<WaveformScale>(); } };
 
WaveformScale &WaveformScale::Get(const WaveTrack &track)
{
   auto &mutTrack = const_cast<WaveTrack&>(track);
   return mutTrack.Attachments::Get<WaveformScale>(key2);
}
 
WaveformScale &WaveformScale::Get(const WaveChannel &channel)
{
   return Get(channel.GetTrack());
}
 
WaveformScale::~WaveformScale() = default;
 
auto WaveformScale::Clone() const -> PointerType
{
   return std::make_unique<WaveformScale>(*this);
}
 
int WaveformScale::ZeroLevelYCoordinate(wxRect rect) const
{
   return rect.GetTop() +
      (int)((mDisplayMax / (mDisplayMax - mDisplayMin)) * rect.height);
}