MuHua-123
77 lines
2.6 KiB
C#
77 lines
2.6 KiB
C#
using System;
|
|
using System.Collections;
|
|
using System.Collections.Generic;
|
|
using UnityEngine;
|
|
using UnityEngine.UIElements;
|
|
|
|
namespace MuHua
|
|
{
|
|
/// <summary>
|
|
/// 滑块(水平)
|
|
/// </summary>
|
|
public class UIScrollerHorizontal
|
|
{
|
|
/// <summary> 绑定的元素 </summary>
|
|
public readonly VisualElement element;
|
|
/// <summary> 绑定的画布 </summary>
|
|
public readonly VisualElement canvas;
|
|
/// <summary> 值改变时 </summary>
|
|
public event Action<float> ValueChanged;
|
|
|
|
public float value;
|
|
public bool isDragger;
|
|
public float originalPosition;
|
|
public float pointerPosition;
|
|
|
|
public VisualElement dragger => element.Q<VisualElement>("Dragger");
|
|
|
|
public UIScrollerHorizontal(VisualElement element, VisualElement canvas)
|
|
{
|
|
this.element = element;
|
|
this.canvas = canvas;
|
|
|
|
//设置事件
|
|
dragger.RegisterCallback<PointerDownEvent>(DraggerDown);
|
|
element.RegisterCallback<PointerDownEvent>(ElementDown);
|
|
|
|
canvas.RegisterCallback<PointerUpEvent>((evt) => isDragger = false);
|
|
canvas.RegisterCallback<PointerLeaveEvent>((evt) => isDragger = false);
|
|
}
|
|
|
|
public void DraggerDown(PointerDownEvent evt)
|
|
{
|
|
isDragger = true;
|
|
originalPosition = dragger.transform.position.x;
|
|
pointerPosition = UITool.GetMousePosition().x;
|
|
}
|
|
public void ElementDown(PointerDownEvent evt)
|
|
{
|
|
float offset = evt.localPosition.x - dragger.resolvedStyle.width * 0.5f;
|
|
float max = element.resolvedStyle.width - dragger.resolvedStyle.width;
|
|
float value = Mathf.InverseLerp(0, max, offset);
|
|
UpdateValue(value);
|
|
}
|
|
|
|
/// <summary> 更新状态 </summary>
|
|
public virtual void Update()
|
|
{
|
|
if (!isDragger) { return; }
|
|
float differ = UITool.GetMousePosition().x - pointerPosition;
|
|
float offset = differ + originalPosition;
|
|
float max = element.resolvedStyle.width - dragger.resolvedStyle.width;
|
|
float value = Mathf.InverseLerp(0, max, offset);
|
|
UpdateValue(value);
|
|
}
|
|
|
|
/// <summary> 更新值(0-1) </summary>
|
|
public void UpdateValue(float value)
|
|
{
|
|
this.value = value;
|
|
ValueChanged?.Invoke(value);
|
|
float max = element.resolvedStyle.width - dragger.resolvedStyle.width;
|
|
float x = Mathf.Lerp(0, max, value);
|
|
dragger.transform.position = new Vector3(x, 0);
|
|
}
|
|
}
|
|
}
|