Scrollbar

Overview

Scrollbar extends the built in Unity Scrollbar and adds smooth scrolling, optional auto hide behavior, and arrow button support. It keeps full compatibility with Unity UI while offering modern quality of life improvements.

Properties

Animation

Name	Type	Description
`smoothDuration`	`float`	Duration for smooth scrolling animation
`smoothCurve`	`AnimationCurve`	Easing curve for scroll animation

Auto Hide

Name	Type	Description
`autoHide`	`bool`	Enables automatic fade in and fade out
`hideAlpha`	`float`	Alpha to use when hidden
`hideDuration`	`float`	Duration of fade animation
`hideTimer`	`float`	Time to wait before starting fade out

References

Name	Type	Description
`minArrow`	`Button`	Optional button to scroll toward min
`maxArrow`	`Button`	Optional button to scroll toward max

Public Methods

Name	Parameters	Description
`ScrollToMin()`	None	Smoothly scrolls to min edge
`ScrollToMax()`	None	Smoothly scrolls to max edge
`ScrollTo(targetValue)`	`float`	Smooth scroll to normalized position
`ScrollTo(target, clamp, duration)`	`float, bool, float`	Full custom ScrollTo
`ScrollBy(amount)`	`float`	Additive scroll
`ScrollBy(amount, clamp, duration)`	`float, bool, float`	Additive scroll with settings

Code Example

ScrollbarExample.cs

using UnityEngine;
using Evo.UI;

public class ScrollbarExample : MonoBehaviour
{
    public Scrollbar scrollbar;

    void Start()
    {
        // Smooth scroll to 50%
        scrollbar.ScrollTo(0.5f);

        // Scroll by +0.1
        scrollbar.ScrollBy(0.1f);

        // Scroll instantly using Unity directly
        scrollbar.value = 1f;

        // Scroll to min or max
        scrollbar.ScrollToMin();
        scrollbar.ScrollToMax();
    }

    void Update()
    {
        // Example: scroll wheel manually
        if (Input.GetKeyDown(KeyCode.UpArrow))
            scrollbar.ScrollBy(0.1f);

        if (Input.GetKeyDown(KeyCode.DownArrow))
            scrollbar.ScrollBy(-0.1f);
    }
}