MuHua-123
99 lines
3.1 KiB
C#
99 lines
3.1 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.UIElements;
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using MuHua;
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/// <summary>
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/// UI拖拽物品
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/// </summary>
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public class UIDragItem : ModuleUIPanel, UIControl {
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/// <summary> 画布 </summary>
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private VisualElement canvas;
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/// <summary> 是否启用 </summary>
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private bool isEnable;
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/// <summary> 鼠标位置 </summary>
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private Vector2 mousePosition;
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/// <summary> 偏移位置 </summary>
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private Vector2 offsetPosition;
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/// <summary> 物品容器 </summary>
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private DragContainer container;
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/// <summary> 目标容器 </summary>
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private DragContainer targetContainer;
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public Label Count => Q<Label>("Count");
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public VisualElement Image => Q<VisualElement>("Image");
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public VisualElement Preview => Q<VisualElement>("Preview");
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public UIDragItem(VisualElement element, VisualElement canvas) : base(element) {
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this.canvas = canvas;
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ModuleUI.AddControl(this);
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canvas.RegisterCallback<MouseUpEvent>(MouseUpEvent);
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canvas.RegisterCallback<MouseMoveEvent>(FloatingFunc);
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}
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private void MouseUpEvent(MouseUpEvent evt) {
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if (!isEnable) { return; }
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isEnable = false;
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container?.Cancel();
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element.EnableInClassList("document-page-hide", !isEnable);
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if (container == null || targetContainer == null) { return; }
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int count = container.Count;
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DataItem item = container.Item;
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container.Exchange(targetContainer.Item, targetContainer.Count);
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targetContainer.Exchange(item, count);
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}
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private void FloatingFunc(MouseMoveEvent evt) {
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mousePosition = evt.mousePosition;
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}
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public void Update() {
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Preview.transform.position = mousePosition + offsetPosition;
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// if (targetContainer == null) { return; }
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// Preview.transform.position = targetContainer.Anchor.worldBound.position;
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}
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public void Dispose() {
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canvas.UnregisterCallback<MouseUpEvent>(MouseUpEvent);
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canvas.UnregisterCallback<MouseMoveEvent>(FloatingFunc);
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}
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/// <summary> 设置容器 </summary>
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public void Settings(DragContainer container) {
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this.container = container;
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isEnable = container.Item != null;
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element.EnableInClassList("document-page-hide", !isEnable);
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if (isEnable) { UpdatePreview(); }
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}
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/// <summary> 进入容器 </summary>
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public void EnterContainer(DragContainer container) {
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targetContainer = container;
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}
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/// <summary> 退出容器 </summary>
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public void ExitContainer(DragContainer container) {
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if (targetContainer == container) { targetContainer = null; }
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}
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private void UpdatePreview() {
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offsetPosition = container.Anchor.worldBound.position - mousePosition;
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Count.text = container.Count.ToString();
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Count.EnableInClassList("dragitem-count-hide", container.Count <= 1);
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Image.style.backgroundImage = new StyleBackground(container.Item.sprite);
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}
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}
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/// <summary>
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/// 项目拖拽
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/// </summary>
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public interface DragContainer {
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/// <summary> 数量 </summary>
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public int Count { get; }
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/// <summary> 物品 </summary>
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public DataItem Item { get; }
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/// <summary> 锚点 </summary>
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public VisualElement Anchor { get; }
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/// <summary> 取消拖拽 </summary>
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public void Cancel();
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/// <summary> 交换物品 </summary>
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public void Exchange(DataItem item, int count);
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} |