A class for receiving callbacks from a Slider. More...

Public Member Functions
virtual	~Listener ()=default
	Destructor. More...

virtual void	sliderValueChanged (Slider *slider)=0
	Called when the slider's value is changed. More...

virtual void	sliderDragStarted (Slider *)
	Called when the slider is about to be dragged. More...

virtual void	sliderDragEnded (Slider *)
	Called after a drag operation has finished. More...

Detailed Description

A class for receiving callbacks from a Slider.

To be told when a slider's value changes, you can register a Slider::Listener object using Slider::addListener().

See also: Slider::addListener, Slider::removeListener

Constructor & Destructor Documentation

◆ ~Listener()

virtual Slider::Listener::~Listener ( )

virtualdefault

Destructor.

Member Function Documentation

◆ sliderValueChanged()

virtual void Slider::Listener::sliderValueChanged ( Slider * slider )

pure virtual

Called when the slider's value is changed.

This may be caused by dragging it, or by typing in its text entry box, or by a call to Slider::setValue().

You can find out the new value using Slider::getValue().

See also: Slider::valueChanged

◆ sliderDragStarted()

virtual void Slider::Listener::sliderDragStarted ( Slider * )

virtual

Called when the slider is about to be dragged.

This is called when a drag begins, then it's followed by multiple calls to sliderValueChanged(), and then sliderDragEnded() is called after the user lets go.

See also: sliderDragEnded, Slider::startedDragging

◆ sliderDragEnded()

virtual void Slider::Listener::sliderDragEnded ( Slider * )