mirror of
https://github.com/RHeavenStudioPlus/HeavenStudioPlus.git
synced 2024-12-05 07:47:30 +00:00
b3f48e50a7
Co-authored-by: Jenny Crowe <jakobwcrowe@berkeley.edu>
62 lines
2.1 KiB
C#
62 lines
2.1 KiB
C#
using System.Collections;
|
|
using System.Collections.Generic;
|
|
using UnityEngine;
|
|
using UnityEngine.EventSystems;
|
|
using UnityEngine.UI;
|
|
|
|
namespace HeavenStudio.Editor
|
|
{
|
|
// Thank you Unity forums!
|
|
// https://forum.unity.com/threads/scroll-view-does-not-scroll-with-mousewheel-when-mouse-is-over-a-button-inside-the-scroll-view.848848/
|
|
|
|
public class ChiScrollRect : ScrollRect, IPointerEnterHandler, IPointerExitHandler
|
|
{
|
|
private static string mouseScrollWheelAxis = "Mouse ScrollWheel";
|
|
private bool swallowMouseWheelScrolls = true;
|
|
private bool isMouseOver = false;
|
|
|
|
public void OnPointerEnter(PointerEventData eventData)
|
|
{
|
|
isMouseOver = true;
|
|
}
|
|
|
|
public void OnPointerExit(PointerEventData eventData)
|
|
{
|
|
isMouseOver = false;
|
|
}
|
|
|
|
private void Update()
|
|
{
|
|
// Detect the mouse wheel and generate a scroll. This fixes the issue where Unity will prevent our ScrollRect
|
|
// from receiving any mouse wheel messages if the mouse is over a raycast target (such as a button).
|
|
if (isMouseOver && IsMouseWheelRolling())
|
|
{
|
|
var delta = UnityEngine.Input.GetAxis(mouseScrollWheelAxis);
|
|
|
|
PointerEventData pointerData = new PointerEventData(EventSystem.current);
|
|
pointerData.scrollDelta = new Vector2(0f, delta * scrollSensitivity);
|
|
|
|
swallowMouseWheelScrolls = false;
|
|
OnScroll(pointerData);
|
|
swallowMouseWheelScrolls = true;
|
|
}
|
|
}
|
|
|
|
public override void OnScroll(PointerEventData data)
|
|
{
|
|
if (IsMouseWheelRolling() && swallowMouseWheelScrolls)
|
|
{
|
|
// Eat the scroll so that we don't get a double scroll when the mouse is over an image
|
|
}
|
|
else
|
|
{
|
|
base.OnScroll(data);
|
|
}
|
|
}
|
|
|
|
private static bool IsMouseWheelRolling()
|
|
{
|
|
return UnityEngine.Input.GetAxis(mouseScrollWheelAxis) != 0;
|
|
}
|
|
}
|
|
}
|