Class BasicSliderUI.TrackListener

All Implemented Interfaces:
MouseListener, MouseMotionListener, MouseWheelListener, EventListener, MouseInputListener
Enclosing class:
BasicSliderUI
public class BasicSliderUI.TrackListener
extends MouseInputAdapter

Track mouse movements. This class should be treated as a "protected" inner class. Instantiate it only within subclasses of Foo.

Fields

Modifier and Type Field Description
protected int currentMouseX

Current mouse x.
protected int currentMouseY

Current mouse y.
protected int offset

The offset

Constructors

Constructor Description
TrackListener()

Methods

Modifier and Type Method Description
void mouseDragged​(MouseEvent e)

Set the models value to the position of the top/left of the thumb relative to the origin of the track.
void mousePressed​(MouseEvent e)

If the mouse is pressed above the "thumb" component then reduce the scrollbars value by one page ("page up"), otherwise increase it by one page.
boolean shouldScroll​(int direction)

Returns if scrolling should occur

Methods declared in class java.awt.event.MouseAdapter

mouseMoved, mouseWheelMoved

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods declared in interface java.awt.event.MouseListener

mouseClicked, mouseEntered, mouseExited, mouseReleased

Methods declared in interface java.awt.event.MouseMotionListener

mouseMoved

Fields

offset

protected transient int offset

The offset

currentMouseX

protected transient int currentMouseX

Current mouse x.

currentMouseY

protected transient int currentMouseY

Current mouse y.

Constructors

TrackListener

public TrackListener()

Methods

mousePressed

public void mousePressed(MouseEvent e)

If the mouse is pressed above the "thumb" component then reduce the scrollbars value by one page ("page up"), otherwise increase it by one page. If there is no thumb then page up if the mouse is in the upper half of the track.

Parameters:
e - the event to be processed

shouldScroll

public boolean shouldScroll(int direction)

Returns if scrolling should occur

Parameters:
direction - the direction.
Returns:
if scrolling should occur

mouseDragged

public void mouseDragged(MouseEvent e)

Set the models value to the position of the top/left of the thumb relative to the origin of the track.

Specified by:
mouseDragged in interface MouseMotionListener
Overrides:
mouseDragged in class MouseAdapter
Parameters:
e - the event to be processed

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https://docs.oracle.com/en/java/javase/11/docs/api/java.desktop/javax/swing/plaf/basic/BasicSliderUI.TrackListener.html