Method SaveMidi

Source/NoteCanvas.cpp:613–648

}

void NoteCanvas::SaveMidi()
{
   using namespace juce;
   constexpr static int ticksPerQuarterNote = 960;

   FileChooser chooser("Save midi", File(ofToDataPath("midi")), "*.mid", true, false, TheSynth->GetFileChooserParent());
   if (chooser.browseForFileToSave(true))
   {
      MidiFile midifile;
      midifile.setTicksPerQuarterNote(ticksPerQuarterNote);
      MidiMessageSequence track1;
      MidiMessage trackTimeSig = MidiMessage::timeSignatureMetaEvent(TheTransport->GetTimeSigTop(), TheTransport->GetTimeSigBottom());
      track1.addEvent(trackTimeSig);
      for (auto* element : mCanvas->GetElements())
      {
         NoteCanvasElement* noteOnElement = static_cast<NoteCanvasElement*>(element);
         int noteNumber = mCanvas->GetNumRows() - noteOnElement->mRow - 1;
         float noteStart = (element->mCol + element->mOffset) * ticksPerQuarterNote *
                           +TheTransport->GetMeasureFraction(mInterval) / TheTransport->GetMeasureFraction(kInterval_4n);
         float velocity = noteOnElement->GetVelocity();
         MidiMessage messageOn = MidiMessage::noteOn(1, noteNumber, velocity);
         messageOn.setTimeStamp(noteStart);
         track1.addEvent(messageOn);
         float noteEnd = (element->mCol + element->mOffset + element->mLength) * ticksPerQuarterNote *
                         +TheTransport->GetMeasureFraction(mInterval) / TheTransport->GetMeasureFraction(kInterval_4n);
         MidiMessage messageOff = MidiMessage::noteOff(1, noteNumber, velocity);
         messageOff.setTimeStamp(noteEnd);
         track1.addEvent(messageOff);
      }
      midifile.addTrack(track1);
      std::string savePath = chooser.getResult().getFullPathName().toStdString();
      File f(savePath);
      FileOutputStream out(f);
      midifile.writeTo(out);
   }
}

void NoteCanvas::CheckboxUpdated(Checkbox* checkbox, double time)
{