Base class for all Velvet UI elements. More...

#include <Widget.hpp>

Inheritance diagram for Widget:

Public Member Functions
	Widget ()
	Construct a widget with default font loading.

virtual void	handleEvent (const sf::Event &event, sf::RenderWindow &window)
	Handle an SFML event.

virtual void	render (sf::RenderWindow &window)
	Render this widget.

virtual void	setPosition (float x, float y)=0
	Set top-left position of widget in window coordinates.

virtual sf::Vector2< float >	getDimensions ()=0
	Get widget dimensions used by layout containers.

Public Attributes
sf::Font	font
	Shared font loaded by the base widget.

Protected Attributes
float	x

float	y

Detailed Description

Base class for all Velvet UI elements.

Widget defines the minimal lifecycle used by Velvet:

handleEvent receives SFML events
render triggers internal update + draw
setPosition and getDimensions are required for layout containers

Custom widgets should derive from Widget and implement the internal update, setPosition, and getDimensions.

Constructor & Destructor Documentation

◆ Widget()

Widget::Widget ( )

Construct a widget with default font loading.

Member Function Documentation

◆ getDimensions()

virtual sf::Vector2< float > Widget::getDimensions ( )

pure virtual

Get widget dimensions used by layout containers.

Returns: Width and height.

Implemented in Button, Image, InputField, Label, Slider, and Stack.

◆ handleEvent()

virtual void Widget::handleEvent	(	const sf::Event &	event,
		sf::RenderWindow &	window
	)

virtual

Handle an SFML event.

Parameters

event	Event propagated from Window.
window	Render window used for coordinate mapping.

Reimplemented in Button, InputField, Slider, and Stack.

◆ render()

virtual void Widget::render ( sf::RenderWindow & window )

virtual

Render this widget.

Default implementation calls update(window) then draw(window).

Reimplemented in Button, Image, InputField, Label, Slider, and Stack.

◆ setPosition()

virtual void Widget::setPosition	(	float	x,
		float	y
	)

pure virtual

Set top-left position of widget in window coordinates.

Implemented in Button, Image, InputField, Label, Slider, and Stack.

Member Data Documentation

◆ font

sf::Font Widget::font

Shared font loaded by the base widget.

◆ x

float Widget::x

protected

◆ y

float Widget::y