mathe/Library/PackageCache/com.unity.shadergraph@14.0.8/Editor/Drawing/Manipulators/Scrollable.cs

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2024-09-20 20:30:10 +02:00
using UnityEngine;
using System;
using UnityEngine.UIElements;
namespace UnityEditor.ShaderGraph.Drawing
{
class Scrollable : MouseManipulator
{
Action<float> m_Handler;
public Scrollable(Action<float> handler)
{
m_Handler = handler;
}
protected override void RegisterCallbacksOnTarget()
{
target.RegisterCallback<WheelEvent>(HandleMouseWheelEvent);
}
protected override void UnregisterCallbacksFromTarget()
{
target.UnregisterCallback<WheelEvent>(HandleMouseWheelEvent);
}
void HandleMouseWheelEvent(WheelEvent evt)
{
m_Handler(evt.delta.y);
evt.StopPropagation();
}
}
}