update 0.6.4
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@@ -1,213 +1,24 @@
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.UI;
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using XericLibrary.Runtime.Blueprint.QuickGraph;
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namespace XericLibrary.Runtime.Blueprint
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{
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/// <summary>
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/// 蓝图框选工具 —— 鼠标左键在空白区域拖拽，绘制矩形选框，
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/// 释放时计算框选范围内所有元素的交集并输出统计日志。
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/// <para>选框 UGUI Image 默认渲染在所有层之上（SetAsLastSibling）。</para>
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/// <para>框选结果通过 <see cref="BlueprintToolProvider.GetSelector"/>(Graph).<see cref="SelectorHandle.CurrentSelection"/> 读取。</para>
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/// <para>
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/// 选框仅在拖拽距离超过 <see cref="BoxSelectThreshold"/> 后才显示，
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/// 避免误触显示闪烁。
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/// </para>
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/// </summary>
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[BlueprintTool(phase: ToolPhase.PreUpdate, order: 60)]
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public class BlueprintBoxSelectTool : BlueprintTool
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{
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// ---------- 状态 ----------
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private bool _isBoxSelecting;
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private Vector2 _dragStartCanvas; // 按下时的画布坐标
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private Vector2 _dragEndCanvas; // 当前的画布坐标
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/// <summary>选框 GameObject 是否已创建并可见（超过阈值后）</summary>
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private bool _boxVisible;
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// 选框 UI
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private GameObject _selectionBoxGo;
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private Image _selectionBoxImage;
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private RectTransform _selectionBoxRt;
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// ---------- 配置 ----------
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/// <summary>框选拖拽触发阈值（画布单位）。拖拽距离超过此值后才显示选框并开始框选。</summary>
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public float BoxSelectThreshold = 10f;
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// ---------- 结果 ----------
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/// <summary>结果：通过 Provider.Selector.CurrentSelection 读取框选结果。</summary>
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// ===== 鼠标按下 =====
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public override void OnPointerDown(GraphInputTool sender, Vector2 canvasPoint, int mouseButton)
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{
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if (Graph == null) return;
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if (mouseButton != 0) return; // 仅左键
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// 仅在空白区域开始框选（HitTest 无结果）
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var hit = Graph.HitTest(canvasPoint);
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if (hit != null) return;
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_isBoxSelecting = true;
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_boxVisible = false;
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_dragStartCanvas = canvasPoint;
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_dragEndCanvas = canvasPoint;
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}
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// ===== 拖拽 =====
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public override void OnPointerDrag(GraphInputTool sender, Vector2 canvasPoint, Vector2 delta, int mouseButton)
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{
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if (!_isBoxSelecting || mouseButton != 0) return;
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_dragEndCanvas = canvasPoint;
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// 检查拖拽距离是否超过阈值
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float threshold = BoxSelectThreshold;
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float dragDist = Vector2.Distance(_dragStartCanvas, _dragEndCanvas);
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if (!_boxVisible && dragDist > threshold)
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{
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// 首次超过阈值 → 创建选框
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_boxVisible = true;
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CreateSelectionBox();
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}
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if (_boxVisible)
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{
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UpdateSelectionBox();
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}
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}
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// ===== 释放 =====
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public override void OnPointerUp(GraphInputTool sender, Vector2 canvasPoint, int mouseButton)
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{
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if (!_isBoxSelecting || mouseButton != 0) return;
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_dragEndCanvas = canvasPoint;
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if (_boxVisible)
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{
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FinishSelection();
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}
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else
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{
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// 未超过阈值 → 点击行为（框选起点处的元素）
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SelectAtPoint(_dragStartCanvas);
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}
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_isBoxSelecting = false;
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}
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// ===== 销毁 =====
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public override void OnDestroy()
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{
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DestroySelectionBox();
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}
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// ===== 选框 UI =====
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private void CreateSelectionBox()
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{
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if (Graph?.Canvas == null) return;
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var root = Graph.Canvas.GetRootTransform();
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if (root == null) return;
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// 销毁已有的选框（应对重复点击）
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DestroySelectionBox();
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_selectionBoxGo = new GameObject("__Bp_BoxSelect", typeof(RectTransform), typeof(Image));
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_selectionBoxGo.hideFlags = HideFlags.HideAndDontSave;
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_selectionBoxRt = _selectionBoxGo.GetComponent<RectTransform>();
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_selectionBoxRt.SetParent(root, false);
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// 枢轴设为左下角；锚点居中对齐 RenderRoot 枢轴（与 CanvasToLocal 空间一致）
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_selectionBoxRt.pivot = Vector2.zero;
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_selectionBoxRt.anchorMin = new Vector2(0.5f, 0.5f);
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_selectionBoxRt.anchorMax = new Vector2(0.5f, 0.5f);
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_selectionBoxRt.SetAsLastSibling(); // 渲染在最顶层
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_selectionBoxImage = _selectionBoxGo.GetComponent<Image>();
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_selectionBoxImage.color = new Color(0.2f, 0.5f, 1.0f, 0.15f);
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var outline = _selectionBoxGo.AddComponent<Outline>();
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outline.effectColor = Color.white;
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outline.effectDistance = new Vector2(1, -1);
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}
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private void UpdateSelectionBox()
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{
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if (_selectionBoxRt == null || Graph?.Canvas == null) return;
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// 将画布坐标转为 RenderRoot 本地空间坐标（CanvasToLocal）
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var startLocal = Graph.Canvas.CanvasToLocal(_dragStartCanvas);
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var endLocal = Graph.Canvas.CanvasToLocal(_dragEndCanvas);
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// 计算 RectTransform 位置和尺寸（RenderRoot 本地空间）
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var minX = Mathf.Min(startLocal.x, endLocal.x);
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var minY = Mathf.Min(startLocal.y, endLocal.y);
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var maxX = Mathf.Max(startLocal.x, endLocal.x);
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var maxY = Mathf.Max(startLocal.y, endLocal.y);
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_selectionBoxRt.anchoredPosition = new Vector2(minX, minY);
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_selectionBoxRt.sizeDelta = new Vector2(maxX - minX, maxY - minY);
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}
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private void FinishSelection()
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{
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UpdateSelectionBox();
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// 计算选框内的元素（画布坐标空间）
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var selectList = new System.Collections.Generic.List<IBlueprintElement>();
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var min = new Vector2(
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Mathf.Min(_dragStartCanvas.x, _dragEndCanvas.x),
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Mathf.Min(_dragStartCanvas.y, _dragEndCanvas.y));
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var max = new Vector2(
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Mathf.Max(_dragStartCanvas.x, _dragEndCanvas.x),
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Mathf.Max(_dragStartCanvas.y, _dragEndCanvas.y));
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var selectRect = new Rect(min, max - min);
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var selector = BlueprintToolProvider.GetSelector(Graph);
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selector.RectHitTest(Graph, selectRect, selectList);
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// 通过当前 Graph 的 SelectorHandle 提交多选
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selector.CommitMultiSelection(selectList);
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// 销毁选框
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DestroySelectionBox();
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}
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private void SelectAtPoint(Vector2 canvasPoint)
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{
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if (Graph == null) return;
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var selector = BlueprintToolProvider.GetSelector(Graph);
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var hit = selector.HitTest(Graph, canvasPoint);
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if (hit != null)
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selector.CommitSelection(hit);
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else
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selector.SwapToHistory();
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}
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private void DestroySelectionBox()
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{
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if (_selectionBoxGo != null)
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{
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#if UNITY_EDITOR
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if (!Application.isPlaying)
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Object.DestroyImmediate(_selectionBoxGo);
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else
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#endif
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Object.Destroy(_selectionBoxGo);
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_selectionBoxGo = null;
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_selectionBoxRt = null;
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_selectionBoxImage = null;
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}
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}
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private bool _selecting, _visible; private Vector2 _start, _end; private GameObject _box; private Image _image; private RectTransform _rect; private Outline _outline; private QuickGraphRenderStyleResolver _styles;
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public override void OnInitialize() { _styles = new QuickGraphRenderStyleResolver(Graph); _styles.Changed += _ => ApplyStyle(); }
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public override void OnConfigChanged() => _styles?.Refresh();
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public override void OnPointerDown(GraphInputTool sender, Vector2 point, int button) { if (button != 0 || Graph == null || Graph.HitTest(point) != null) return; _selecting = true; _visible = false; _start = _end = point; }
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public override void OnPointerDrag(GraphInputTool sender, Vector2 point, Vector2 delta, int button) { if (!_selecting || button != 0) return; _end = point; if (!_visible && Vector2.Distance(_start, _end) > _styles.Snapshot.Selection.DragThreshold) { _visible = true; Create(); } if (_visible) UpdateBox(); }
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public override void OnPointerUp(GraphInputTool sender, Vector2 point, int button) { if (!_selecting || button != 0) return; _end = point; if (_visible) Finish(); else SelectAt(_start); _selecting = false; }
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private void Create() { if (Graph?.Canvas == null) return; var root = Graph.Canvas.GetRootTransform(); if (root == null) return; DestroyBox(); _box = new GameObject("__Bp_BoxSelect", typeof(RectTransform), typeof(Image), typeof(Outline)); _box.hideFlags = HideFlags.HideAndDontSave; _rect = _box.GetComponent<RectTransform>(); _rect.SetParent(root, false); _rect.pivot = Vector2.zero; _rect.anchorMin = _rect.anchorMax = new Vector2(.5f, .5f); _rect.SetAsLastSibling(); _image = _box.GetComponent<Image>(); _outline = _box.GetComponent<Outline>(); ApplyStyle(); }
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private void ApplyStyle() { if (_image == null || _styles == null) return; var s = _styles.Snapshot.Selection; _image.color = s.FillColor; _image.raycastTarget = s.RaycastTarget; _outline.effectColor = s.OutlineColor; _outline.effectDistance = s.OutlineOffset; }
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private void UpdateBox() { if (_rect == null || Graph?.Canvas == null) return; var a = Graph.Canvas.CanvasToLocal(_start); var b = Graph.Canvas.CanvasToLocal(_end); var min = Vector2.Min(a, b); _rect.anchoredPosition = min; _rect.sizeDelta = Vector2.Max(a, b) - min; }
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private void Finish() { UpdateBox(); var min = Vector2.Min(_start, _end); var selector = BlueprintToolProvider.GetSelector(Graph); var result = new List<IBlueprintElement>(); selector.RectHitTest(Graph, new Rect(min, Vector2.Max(_start, _end) - min), result); selector.CommitMultiSelection(result); DestroyBox(); }
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private void SelectAt(Vector2 point) { var selector = BlueprintToolProvider.GetSelector(Graph); var hit = selector.HitTest(Graph, point); if (hit != null) selector.CommitSelection(hit); else selector.SwapToHistory(); }
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private void DestroyBox() { if (_box == null) return; if (Application.isPlaying) Object.Destroy(_box); else Object.DestroyImmediate(_box); _box = null; _image = null; _rect = null; _outline = null; }
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public override void OnDestroy() { _styles?.Dispose(); _styles = null; DestroyBox(); }
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}
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}
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