ProjectSettings.cpp

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/**********************************************************************
 
Audacity: A Digital Audio Editor
 
ProjectSettings.cpp
 
Paul Licameli split from AudacityProject.cpp
 
**********************************************************************/
 
#include "ProjectSettings.h"
 
 
 
#include "AudioIOBase.h"
#include "Project.h"
#include "QualitySettings.h"
#include "widgets/NumericTextCtrl.h"
#include "prefs/TracksBehaviorsPrefs.h"
#include "XMLWriter.h"
#include "XMLTagHandler.h"
 
wxDEFINE_EVENT(EVT_PROJECT_SETTINGS_CHANGE, wxCommandEvent);
 
namespace {
   void Notify(
      AudacityProject &project, ProjectSettings::EventCode code,
      long previousValue )
   {
      wxCommandEvent e{ EVT_PROJECT_SETTINGS_CHANGE };
      e.SetInt( static_cast<int>( code ) );
      e.SetExtraLong( previousValue );
      project.ProcessEvent( e );
   }
}
 
static const AudacityProject::AttachedObjects::RegisteredFactory
sProjectSettingsKey{
  []( AudacityProject &project ){
     auto result = std::make_shared< ProjectSettings >( project );
     return result;
   }
};
 
ProjectSettings &ProjectSettings::Get( AudacityProject &project )
{
   return project.AttachedObjects::Get< ProjectSettings >(
      sProjectSettingsKey );
}
 
const ProjectSettings &ProjectSettings::Get( const AudacityProject &project )
{
   return Get( const_cast< AudacityProject & >( project ) );
}
 
ProjectSettings::ProjectSettings(AudacityProject &project)
   : mProject{ project }
   , mSnapTo( gPrefs->Read(wxT("/SnapTo"), SNAP_OFF) )
   , mCurrentBrushRadius ( 5 )
{
   bool multiToolActive = false;
   gPrefs->Read(wxT("/GUI/ToolBars/Tools/MultiToolActive"), &multiToolActive);
 
   if (multiToolActive)
      mCurrentTool = ToolCodes::multiTool;
   else
      mCurrentTool = ToolCodes::selectTool;
 
   UpdatePrefs();
}
 
void ProjectSettings::UpdatePrefs()
{
   gPrefs->Read(wxT("/AudioFiles/ShowId3Dialog"), &mShowId3Dialog, true);
   gPrefs->Read(wxT("/GUI/EmptyCanBeDirty"), &mEmptyCanBeDirty, true);
   gPrefs->Read(wxT("/GUI/ShowSplashScreen"), &mShowSplashScreen, true);
   mSoloPref = TracksBehaviorsSolo.Read();
   // Update the old default to the NEW default.
   if (mSoloPref == wxT("Standard"))
      mSoloPref = wxT("Simple");
   gPrefs->Read(wxT("/GUI/TracksFitVerticallyZoomed"),
      &mTracksFitVerticallyZoomed, false);
   //   gPrefs->Read(wxT("/GUI/UpdateSpectrogram"),
   //     &mViewInfo.bUpdateSpectrogram, true);
 
   // This code to change an empty projects rate is currently disabled, after
   // discussion.  The rule 'Default sample rate' only affects newly created
   // projects was felt to be simpler and better.
#if 0
   // The DefaultProjectSample rate is the rate for new projects.
   // Do not change this project's rate, unless there are no tracks.
   if( TrackList::Get( *this ).size() == 0){
      mRate = QualityDefaultSampleRate.Read();
      // If necessary, we change this rate in the selection toolbar too.
      auto bar = SelectionBar::Get( *this );
      bar.SetRate( mRate );
   }
#endif
}
 
void ProjectSettings::SetSnapTo(int snap)
{
   mSnapTo = snap;
}
   
int ProjectSettings::GetSnapTo() const
{
   return mSnapTo;
}
 
void ProjectSettings::SetTool(int tool) {
   if (auto oldValue = mCurrentTool; oldValue != tool) {
      mCurrentTool = tool;
      Notify( mProject, ChangedTool, oldValue );
   }
}
 
static ProjectFileIORegistry::AttributeWriterEntry entry {
[](const AudacityProject &project, XMLWriter &xmlFile){
   auto &settings = ProjectSettings::Get(project);
   xmlFile.WriteAttr(wxT("snapto"),
                     settings.GetSnapTo() ? wxT("on") : wxT("off"));
}
};
 
static ProjectFileIORegistry::AttributeReaderEntries entries {
// Just a pointer to function, but needing overload resolution as non-const:
(ProjectSettings& (*)(AudacityProject &)) &ProjectSettings::Get, {
   // PRL:  The following has persisted as a per-project setting for long.
   // Maybe that should be abandoned.  Enough to save changes in the user
   // preference file.
   { "snapto", [](auto &settings, auto value){
      settings.SetSnapTo(value.ToWString() == wxT("on") ? true : false);
   } },
} };