Papyrus::Circle Class Reference

A circle is drawn centered on the x,y coordinate with a specified radius. More...

#include <circle.h>

Inheritance diagram for Papyrus::Circle:

[legend]

List of all members.

Public Member Functions
	PAPYRUS_DRAWABLE (Circle)
virtual	~Circle ()
virtual void	set (const AttributeValueMap &avmap)
double	radius () const
	Returns the radius of this arc.
void	set_radius (double r)
	Sets the radius to r.
sigc::signal< void >	signal_radius ()
	Signal emitted when the radius is changed.
virtual void	draw_shape (Context &cairo) const
	Draws on the provided context.
virtual Glib::ustring	svg (unsigned depth=0)
Static Public Member Functions
static Circle::pointer	create (double radius=1.0, Fill::pointer fill=Fill::pointer(), Stroke::pointer stroke=Stroke::pointer())
	Creates a circle with the specified radius.
static Circle::pointer	create (const Glib::ustring &id, double radius=1.0, Fill::pointer fill=Fill::pointer(), Stroke::pointer stroke=Stroke::pointer())
	Creates a circle with the specified radius.
static Circle::pointer	create (const AttributeValueMap &avmap)
Protected Member Functions
	Circle (const Glib::ustring &id, double radius, Fill::pointer fill, Stroke::pointer stroke)
	Circle (const AttributeValueMap &avmap)
virtual Region	calculate_extents (const Matrix &m=Matrix::Identity, ExtentsPerformance ep=EXTENTS_QUICK) const
	Reimplments the extent calculation to optimize quick extents without rendering to the sidebuffer.
Protected Attributes
double	m_radius
	The radius of the arc.
sigc::signal< void >	m_signal_radius
	Signal emitted when the radius is changed.

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Detailed Description

A circle is drawn centered on the x,y coordinate with a specified radius.

The circle class is a very thin interface for a 360' arc, and doesn't actually extend the arc in any meaningful way, but is provided for convenience and notation.

Circle

Author:

Rick L Vinyard Jr

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Constructor & Destructor Documentation

Papyrus::Circle::Circle	(	const Glib::ustring &	id,
		double	radius,
		Fill::pointer	fill,
		Stroke::pointer	stroke
	)			[protected]

Referenced by create().

Papyrus::Circle::Circle

(

const AttributeValueMap &

avmap

)

[protected]

Papyrus::Circle::~Circle

(

)

[virtual]

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Member Function Documentation

Region Papyrus::Circle::calculate_extents	(	const Matrix &	m = Matrix::Identity,
		ExtentsPerformance	ep = EXTENTS_QUICK
	)			const [protected, virtual]

Reimplments the extent calculation to optimize quick extents without rendering to the sidebuffer.

Reimplemented from Papyrus::Drawable.

References Papyrus::EXTENTS_QUICK, Papyrus::Region::include(), m_radius, Papyrus::Shape::m_stroke, Papyrus::Matrix::transform_point(), Papyrus::Drawable::x(), and Papyrus::Drawable::y().

Circle::pointer Papyrus::Circle::create

(

const AttributeValueMap &

avmap

)

[static]

References Circle(), and PAPYRUS_CREATE.

Circle::pointer Papyrus::Circle::create	(	const Glib::ustring &	id,
		double	radius = 1.0,
		Fill::pointer	fill = Fill::pointer(),
		Stroke::pointer	stroke = Stroke::pointer()
	)			[static]

Creates a circle with the specified radius.

References PAPYRUS_CREATE.

Circle::pointer Papyrus::Circle::create	(	double	radius = 1.0,
		Fill::pointer	fill = Fill::pointer(),
		Stroke::pointer	stroke = Stroke::pointer()
	)			[static]

Creates a circle with the specified radius.

References PAPYRUS_CREATE.

Referenced by Papyrus::SVG::process_element().

void Papyrus::Circle::draw_shape

(

Context &

cairo

)

const [virtual]

Draws on the provided context.

Implements Papyrus::Shape.

References m_radius.

Papyrus::Circle::PAPYRUS_DRAWABLE

(

Circle

)

double Papyrus::Circle::radius

(

)

const

Returns the radius of this arc.

References m_radius.

void Papyrus::Circle::set

(

const AttributeValueMap &

avmap

)

[virtual]

Reimplemented from Papyrus::Shape.

References set_radius(), Papyrus::Drawable::set_x(), Papyrus::Drawable::set_y(), and Papyrus::strcaseeq().

void Papyrus::Circle::set_radius

(

double

r

)

Sets the radius to r.

References m_radius, m_signal_radius, and Papyrus::Shape::shape_changed().

Referenced by set().

sigc::signal< void > Papyrus::Circle::signal_radius

(

)

Signal emitted when the radius is changed.

References m_signal_radius.

Glib::ustring Papyrus::Circle::svg

(

unsigned

depth = 0

)

[virtual]

Reimplemented from Papyrus::Renderable.

References m_radius, Papyrus::Shape::svg_fill(), Papyrus::Renderable::svg_id(), Papyrus::Renderable::svg_spacing(), Papyrus::Drawable::svg_transform(), Papyrus::Drawable::x(), and Papyrus::Drawable::y().

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Member Data Documentation

double Papyrus::Circle::m_radius [protected]

The radius of the arc.

Referenced by calculate_extents(), draw_shape(), radius(), set_radius(), and svg().

sigc::signal<void> Papyrus::Circle::m_signal_radius [protected]

Signal emitted when the radius is changed.

Referenced by set_radius(), and signal_radius().

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

• circle.h
• circle.cpp