116 lines
3.3 KiB
C#
116 lines
3.3 KiB
C#
using UnityEngine;
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namespace AlicizaX.UI.RecyclerView
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{
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public interface ILayoutManager
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{
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/// <summary>
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/// 滚动时，刷新整个页面的布局
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/// </summary>
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void UpdateLayout();
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/// <summary>
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/// 为 ViewHolder 设置布局
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/// </summary>
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/// <param name="viewHolder"></param>
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/// <param name="index"></param>
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void Layout(ViewHolder viewHolder, int index);
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/// <summary>
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/// 设置 Content 大小
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/// </summary>
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void SetContentSize();
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/// <summary>
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/// 计算 Content 的大小
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/// </summary>
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/// <returns></returns>
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Vector2 CalculateContentSize();
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/// <summary>
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/// 计算第 index 个 ViewHolder 到顶部的距离
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/// </summary>
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/// <param name="index"></param>
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/// <returns></returns>
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Vector2 CalculatePosition(int index);
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/// <summary>
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/// 计算 ViewHolder 相对于内容长度的偏移
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/// </summary>
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/// <returns></returns>
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Vector2 CalculateContentOffset();
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/// <summary>
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/// 计算 ViewHolder 相对于视口的偏移
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/// </summary>
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/// <returns></returns>
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Vector2 CalculateViewportOffset();
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/// <summary>
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/// 获取当前显示的第一个 ViewHolder 下标
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/// </summary>
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/// <returns></returns>
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int GetStartIndex();
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/// <summary>
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/// 获取当前显示的最后一个 ViewHolder 下标
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/// </summary>
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/// <returns></returns>
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int GetEndIndex();
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/// <summary>
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/// 数据下标转换成在布局中对应的位置
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/// </summary>
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/// <param name="index"></param>
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/// <returns></returns>
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float IndexToPosition(int index);
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/// <summary>
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/// 在布局中的位置转换成数据下标
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/// </summary>
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/// <param name="position"></param>
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/// <returns></returns>
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int PositionToIndex(float position);
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/// <summary>
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/// 滚动时，item 对应的动画
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/// </summary>
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void DoItemAnimation();
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/// <summary>
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/// 判断第一个 ViewHolder 是否完全可见
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/// </summary>
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/// <param name="index">数据的真实下标</param>
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/// <returns></returns>
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bool IsFullVisibleStart(int index);
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/// <summary>
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/// 判断第一个 ViewHolder 是否完全不可见
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/// </summary>
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/// <param name="index">数据的真实下标</param>
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/// <returns></returns>
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bool IsFullInvisibleStart(int index);
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/// <summary>
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/// 判定最后一个 ViewHolder 是否完全可见
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/// </summary>
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/// <param name="index"></param>
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/// <returns></returns>
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bool IsFullVisibleEnd(int index);
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/// <summary>
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/// 判定最后一个 ViewHolder 是否完全不可见
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/// </summary>
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/// <param name="index"></param>
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/// <returns></returns>
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bool IsFullInvisibleEnd(int index);
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/// <summary>
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/// 判定第 index ViewHolder是否可见
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/// </summary>
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/// <param name="index"></param>
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/// <returns></returns>
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bool IsVisible(int index);
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}
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}
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