Inheritance diagram for anonymous_namespace{SnapUtils.cpp}::ProjectDependentMultiplierSnapItem:

Collaboration diagram for anonymous_namespace{SnapUtils.cpp}::ProjectDependentMultiplierSnapItem:

Public Member Functions
	ProjectDependentMultiplierSnapItem (const Identifier &internalName, const TranslatableString &label, MultiplierFunctor functor)

SnapResult	Snap (const AudacityProject &project, double time, bool nearest) const override

SnapResult	SingleStep (const AudacityProject &project, double time, bool upwards) const override

Public Member Functions inherited from SnapRegistryItem
	SnapRegistryItem (const Identifier &internalName, const TranslatableString &label)

	~SnapRegistryItem () override

virtual SnapResult	Snap (const AudacityProject &project, double time, bool nearest) const =0

virtual SnapResult	SingleStep (const AudacityProject &project, double time, bool upwards) const =0

Public Member Functions inherited from Registry::SingleItem
	~SingleItem () override=0

Public Member Functions inherited from Registry::detail::BaseItem
	BaseItem (const Identifier &internalName)

virtual	~BaseItem ()

Private Attributes
const MultiplierFunctor	mMultiplierFunctor

Additional Inherited Members
Public Attributes inherited from SnapRegistryItem
const TranslatableString	label

Public Attributes inherited from Registry::detail::BaseItem
const Identifier	name

OrderingHint	orderingHint

Detailed Description

Definition at line 232 of file SnapUtils.cpp.

Constructor & Destructor Documentation

◆ ProjectDependentMultiplierSnapItem()

anonymous_namespace{SnapUtils.cpp}::ProjectDependentMultiplierSnapItem::ProjectDependentMultiplierSnapItem	(	const Identifier &	internalName,
		const TranslatableString &	label,
		MultiplierFunctor	functor
	)

inline

Definition at line 235 of file SnapUtils.cpp.

       : SnapRegistryItem { internalName, label }
       , mMultiplierFunctor { std::move(functor) }
   {
      assert(mMultiplierFunctor);
   }

Member Function Documentation

◆ SingleStep()

SnapResult anonymous_namespace{SnapUtils.cpp}::ProjectDependentMultiplierSnapItem::SingleStep	(	const AudacityProject &	project,
		double	time,
		bool	upwards
	)		const

inlineoverridevirtual

Implements SnapRegistryItem.

Definition at line 252 of file SnapUtils.cpp.

   {
      if (!mMultiplierFunctor)
         return { time, false };
 
      const auto multiplier = mMultiplierFunctor(project);
 
      const auto eps =
         std::max(1.0, time) * std::numeric_limits<double>::epsilon();
 
      const auto current = static_cast<int>(std::floor(time * (1.0 + eps) * multiplier));
      const auto next = upwards ? current + 1 : current - 1;
 
      double result = next / multiplier;
 
      if (result < 0.0)
         return { 0.0, false };
 
      while (static_cast<int>(std::floor(result * multiplier)) < next)
         result += eps;
 
      while (static_cast<int>(std::floor(result * multiplier)) > next)
         result -= eps;
 
      return { result, true };
   }

References project.

◆ Snap()

SnapResult anonymous_namespace{SnapUtils.cpp}::ProjectDependentMultiplierSnapItem::Snap	(	const AudacityProject &	project,
		double	time,
		bool	nearest
	)		const

inlineoverridevirtual

Implements SnapRegistryItem.

Definition at line 245 of file SnapUtils.cpp.

   {
      if (!mMultiplierFunctor)
         return { time, false };
      return SnapWithMultiplier(time, mMultiplierFunctor(project), nearest);
   }

References project, and anonymous_namespace{SnapUtils.cpp}::SnapWithMultiplier().

Here is the call graph for this function:

Member Data Documentation

◆ mMultiplierFunctor

const MultiplierFunctor anonymous_namespace{SnapUtils.cpp}::ProjectDependentMultiplierSnapItem::mMultiplierFunctor

private

Definition at line 281 of file SnapUtils.cpp.

The documentation for this class was generated from the following file:

SnapUtils.cpp

Public Member Functions

Private Attributes

Additional Inherited Members