120 lines
3.5 KiB
C#
120 lines
3.5 KiB
C#
using System.Collections.Generic;
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using UnityEngine;
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namespace XericUI.BubbleLayout
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{
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/// <summary>
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/// 横排布局约束插件 —— 将气泡元素沿 X 轴排列，并通过弹簧力吸附到目标位置。
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/// 支持多布局框穿插排列。
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/// </summary>
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[AddComponentMenu("Xeric UI Vessel/Layout/Horizontal Layout Constraint", 54)]
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public class HorizontalLayoutConstraint : LinearLayoutConstraintBase
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{
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[Header("横排特有")]
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[Tooltip("垂直对齐方式：0=顶部, 1=居中, 2=底部")]
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[Range(0f, 2f)]
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[SerializeField] private float m_VerticalAlignment = 1f;
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[Tooltip("起始水平偏移（相对布局框区域中心）")]
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[SerializeField] private float m_StartOffsetX = 0f;
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#region LinearLayoutConstraintBase 实现
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/// <inheritdoc/>
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protected override string PrimaryAxisName => "X";
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/// <inheritdoc/>
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protected override bool IsPrimaryHorizontal => true;
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/// <inheritdoc/>
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protected override float GetPrimarySize(BubbleItemData item) => item.size.x;
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/// <inheritdoc/>
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protected override float GetPrimarySizeFromRT(RectTransform rt) => rt.rect.width;
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/// <inheritdoc/>
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protected override Vector2 MakeTargetPosition(float primary, float secondary)
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{
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return new Vector2(primary, secondary);
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}
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/// <inheritdoc/>
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protected override float GetSecondaryAlignOffset(BubbleItemData item, LayoutBox box)
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{
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// 垂直对齐偏移：0=顶部(top), 1=居中, 2=底部(bottom)
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// 在 localPosition 空间，Y 轴向上，所以 top = 正方向偏移
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float offset = (1f - m_VerticalAlignment) * (box.Region.height - item.size.y) * 0.5f;
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return offset;
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}
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#endregion
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#region Editor Gizmos
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#if UNITY_EDITOR
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/// <inheritdoc/>
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protected override void DrawItemTargets(List<GizmoSlot> allSlots, Vector2 layoutCenter)
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{
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// 将 slots 按 boxIndex 分组
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var boxSlots = new List<GizmoSlot>[m_LayoutBoxes.Count];
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for (int b = 0; b < m_LayoutBoxes.Count; b++)
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boxSlots[b] = new List<GizmoSlot>();
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for (int i = 0; i < allSlots.Count; i++)
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{
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var slot = allSlots[i];
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int bIdx = Mathf.Clamp(slot.boxIndex, 0, m_LayoutBoxes.Count - 1);
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boxSlots[bIdx].Add(slot);
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}
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// 穿插迭代，计算每个 slot 的目标位置
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int[] indices = new int[boxSlots.Length];
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float[] advances = new float[boxSlots.Length];
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for (int b = 0; b < boxSlots.Length; b++)
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{
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float total = 0f;
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for (int i = 0; i < boxSlots[b].Count; i++)
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total += boxSlots[b][i].size.x + m_Spacing;
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if (boxSlots[b].Count > 0) total -= m_Spacing;
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advances[b] = m_LayoutBoxes[b].Region.center.x + m_StartOffsetX - total * 0.5f;
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}
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Color fillColor = new Color(1f, 0.6f, 0.1f, 0.15f);
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Color wireColor = new Color(1f, 0.55f, 0f, 0.7f);
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bool anyRemaining = true;
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while (anyRemaining)
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{
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anyRemaining = false;
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for (int b = 0; b < boxSlots.Length; b++)
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{
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if (indices[b] >= boxSlots[b].Count)
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continue;
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anyRemaining = true;
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var slot = boxSlots[b][indices[b]];
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var box = m_LayoutBoxes[b];
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float alignOffset = (1f - m_VerticalAlignment) * (box.Region.height - slot.size.y) * 0.5f;
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float targetY = box.Region.center.y + alignOffset;
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float targetX = advances[b];
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Rect localRect = new Rect(
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targetX - slot.size.x * 0.5f,
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targetY - slot.size.y * 0.5f,
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slot.size.x,
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slot.size.y);
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DrawLocalRectAsWireCube(localRect, wireColor, fillColor);
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advances[b] += slot.size.x + m_Spacing;
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indices[b]++;
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}
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}
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}
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#endif
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#endregion
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}
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}
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