Package io.github.palexdev.virtualizedfx.utils

Class ScrollUtils

java.lang.Object

io.github.palexdev.virtualizedfx.utils.ScrollUtils

public class ScrollUtils
extends Object

Utility class for VirtualFlows.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ScrollUtils.ScrollDirection

Method Summary

Modifier and Type	Method	Description
static ScrollUtils.ScrollDirection	determineScrollDirection(Orientation orientation, double delta)	Determines the direction of the scroll from the given orientation and the given delta, uses upOrDown(double) if orientation is VERTICAL or leftOrRight(double) if orientation is HORIZONTAL.
static boolean	isTrackPad(double delta)	Determines if a scroll event comes from the trackpad from the given delta value.
static ScrollUtils.ScrollDirection	leftOrRight(double delta)	If the given delta is lesser than 0 returns LEFT, otherwise returns RIGHT.
static ScrollUtils.ScrollDirection	upOrDown(double delta)	If the given delta is lesser than 0 returns DOWN, otherwise returns UP.

Methods inherited from class java.lang.Object

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

Method Details

isTrackPad

public static boolean isTrackPad(double delta)

Determines if a scroll event comes from the trackpad from the given delta value.

There's no real way to distinguish a scroll event from trackpad or mouse but usually all trackpad events have a much lower delta value.

determineScrollDirection

public static ScrollUtils.ScrollDirection determineScrollDirection(Orientation orientation,
 double delta)

Determines the direction of the scroll from the given orientation and the given delta, uses upOrDown(double) if orientation is VERTICAL or leftOrRight(double) if orientation is HORIZONTAL.

leftOrRight

public static ScrollUtils.ScrollDirection leftOrRight(double delta)

If the given delta is lesser than 0 returns LEFT, otherwise returns RIGHT.

upOrDown

public static ScrollUtils.ScrollDirection upOrDown(double delta)

If the given delta is lesser than 0 returns DOWN, otherwise returns UP.