AeonGUI::CairoPath Class Reference

Cairo-backend path implementation. More...

#include </d/a/AeonGUI/AeonGUI/include/aeongui/CairoPath.hpp>

Inheritance diagram for AeonGUI::CairoPath:

Collaboration diagram for AeonGUI::CairoPath:

Public Member Functions
	CairoPath ()
	Default constructor.
void	Construct (const std::vector< DrawType > &aCommands, size_t aPathDataHint=0) final
	Build the Cairo path from a vector of draw commands.
void	Construct (const DrawType *aCommands, size_t aCommandCount, size_t aPathDataHint=0) final
	Build the Cairo path from a raw array of draw commands.
	~CairoPath ()
	Destructor. Frees path data.
const cairo_path_t *	GetCairoPath () const
	Get the underlying Cairo path structure.
double	GetTotalLength () const final
	Compute the total arc length of the path.
PathPoint	GetPointAtLength (double aDistance) const final
	Get the position and tangent angle at a distance along the path.
bool	IsClosed () const final
	Check whether the path contains a close-path command.
Public Member Functions inherited from AeonGUI::Path
virtual	~Path ()=0
	Virtual destructor.

Detailed Description

Cairo-backend path implementation.

Converts DrawType command sequences into a cached cairo_path_t structure for efficient repeated rendering.

Member Function Documentation

Construct() [1/2]

void AeonGUI::CairoPath::Construct ( const DrawType * aCommands, size_t aCommandCount, size_t aPathDataHint = 0 )

finalvirtual

Build the Cairo path from a raw array of draw commands.

Parameters

aCommands	Pointer to the command array.
aCommandCount	Number of commands.
aPathDataHint	Pre-computed size hint for mPathData.

Implements AeonGUI::Path.

Construct() [2/2]

void AeonGUI::CairoPath::Construct ( const std::vector< DrawType > & aCommands, size_t aPathDataHint = 0 )

finalvirtual

Build the Cairo path from a vector of draw commands.

Parameters

aCommands	The draw command sequence.
aPathDataHint	Pre-computed size hint for mPathData.

Implements AeonGUI::Path.

GetCairoPath()

const cairo_path_t * AeonGUI::CairoPath::GetCairoPath

(

)

const

Get the underlying Cairo path structure.

Returns

Pointer to the cairo_path_t.

GetPointAtLength()

PathPoint AeonGUI::CairoPath::GetPointAtLength ( double aDistance ) const

finalvirtual

Get the position and tangent angle at a distance along the path.

Parameters

aDistance

Distance from the path start in user units.

Returns

PathPoint with x, y, and tangent angle.

Implements AeonGUI::Path.

GetTotalLength()

double AeonGUI::CairoPath::GetTotalLength ( ) const

finalvirtual

Compute the total arc length of the path.

Returns

Total length in user units.

Implements AeonGUI::Path.

IsClosed()

bool AeonGUI::CairoPath::IsClosed ( ) const

finalvirtual

Check whether the path contains a close-path command.

Returns

true if the path is closed.

Implements AeonGUI::Path.

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

• /d/a/AeonGUI/AeonGUI/include/aeongui/CairoPath.hpp
• /d/a/AeonGUI/AeonGUI/core/CairoPath.cpp