拼ui 一些业务逻辑x实现
This commit is contained in:
FloatGaming
@@ -0,0 +1,426 @@
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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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namespace EasyChart
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{
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public sealed class ChartLabelController
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{
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private sealed class Entry
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{
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public Label Label;
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public bool Used;
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public int ZOrder;
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public bool ClipToPlot;
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public float Scale;
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public float ScaleFrom;
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public float ScaleTo;
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public float ScaleAnimStartTime;
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public bool ScaleAnimating;
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public bool HideOnScaleZero;
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}
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private readonly Dictionary<string, Entry> _active = new Dictionary<string, Entry>(256);
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private readonly Stack<Label> _pool = new Stack<Label>(256);
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private VisualElement _root;
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private VisualElement _overlayContainer;
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private VisualElement _plotClippedContainer;
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private IVisualElementScheduledItem _scaleAnimItem;
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private const float k_ScaleAnimDurationSec = 0.5f;
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private Rect _plotRect;
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private object _styleContext;
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private float _edgeFadePx;
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public void Bind(VisualElement root)
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{
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_root = root;
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EnsureContainers();
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EnsureScaleAnimTicker();
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}
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public void BeginFrame(Rect plotRect, object styleContext, float edgeFadePx = 0f)
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{
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_plotRect = plotRect;
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_styleContext = styleContext;
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_edgeFadePx = Mathf.Max(0f, edgeFadePx);
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EnsureContainers();
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EnsureScaleAnimTicker();
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if (_plotClippedContainer != null)
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{
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// Expand clipping area by edgeFadePx on all sides
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_plotClippedContainer.style.left = _plotRect.x - _edgeFadePx;
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_plotClippedContainer.style.top = _plotRect.y - _edgeFadePx;
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_plotClippedContainer.style.width = _plotRect.width + _edgeFadePx * 2f;
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_plotClippedContainer.style.height = _plotRect.height + _edgeFadePx * 2f;
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}
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foreach (var kv in _active)
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{
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kv.Value.Used = false;
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}
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}
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public void Submit(in LabelDescriptor desc)
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{
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if (_root == null) return;
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if (string.IsNullOrEmpty(desc.key)) return;
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EnsureContainers();
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if (!_active.TryGetValue(desc.key, out var entry))
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{
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entry = new Entry();
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entry.Label = GetPooledLabel();
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_active.Add(desc.key, entry);
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}
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entry.Used = true;
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entry.ZOrder = desc.zOrder;
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entry.ClipToPlot = desc.clipToPlot;
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var label = entry.Label;
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if (label == null) return;
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bool shouldBeVisible = desc.visible && !string.IsNullOrEmpty(desc.text);
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if (!shouldBeVisible)
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{
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RequestHide(entry);
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return;
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}
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EnsureShown(entry);
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if (label.parent != GetParentContainer(desc.clipToPlot))
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{
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label.RemoveFromHierarchy();
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GetParentContainer(desc.clipToPlot)?.Add(label);
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}
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label.text = desc.text;
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label.style.position = Position.Absolute;
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label.style.width = StyleKeyword.Auto;
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label.style.height = StyleKeyword.Auto;
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if (desc.colorOverride.a > 0f)
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{
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label.style.color = desc.colorOverride;
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}
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if (desc.fontSizeOverride > 0f)
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{
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label.style.fontSize = desc.fontSizeOverride;
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}
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else
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{
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label.style.fontSize = StyleKeyword.Null;
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}
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ChartTextStyleApplier.ApplyLabel(label, _styleContext != null ? _styleContext : _root, desc.role);
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// Apply background
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bool hasBackground = desc.backgroundColor.a > 0f || desc.backgroundTexture != null;
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if (hasBackground)
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{
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label.style.paddingLeft = 4f;
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label.style.paddingRight = 4f;
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label.style.paddingTop = 2f;
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label.style.paddingBottom = 2f;
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if (desc.backgroundTexture != null)
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{
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// When texture is set, use it as background image (no solid color layer)
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label.style.backgroundColor = StyleKeyword.Null;
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label.style.backgroundImage = new StyleBackground(desc.backgroundTexture);
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label.style.unityBackgroundImageTintColor = desc.backgroundColor.a > 0f ? desc.backgroundColor : Color.white;
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}
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else
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{
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// Only solid color background
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label.style.backgroundColor = desc.backgroundColor;
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label.style.backgroundImage = StyleKeyword.Null;
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label.style.unityBackgroundImageTintColor = StyleKeyword.Null;
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}
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}
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else
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{
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label.style.backgroundColor = StyleKeyword.Null;
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label.style.backgroundImage = StyleKeyword.Null;
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label.style.unityBackgroundImageTintColor = StyleKeyword.Null;
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label.style.paddingLeft = StyleKeyword.Null;
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label.style.paddingRight = StyleKeyword.Null;
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label.style.paddingTop = StyleKeyword.Null;
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label.style.paddingBottom = StyleKeyword.Null;
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}
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var resolvedOffset = new Vector2(desc.offsetPx.x, -desc.offsetPx.y);
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// For clipToPlot labels, offset by edgeFadePx since container is expanded
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float containerOffsetX = desc.clipToPlot ? _edgeFadePx : 0f;
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float containerOffsetY = desc.clipToPlot ? _edgeFadePx : 0f;
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float x = (desc.clipToPlot ? containerOffsetX : _plotRect.x) + desc.anchorPx.x + resolvedOffset.x;
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float y = (desc.clipToPlot ? containerOffsetY : _plotRect.y) + desc.anchorPx.y + resolvedOffset.y;
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ApplyAnchor(label, desc.anchor, x, y);
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// Apply edge fade transparency for clipToPlot labels
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if (desc.clipToPlot && _edgeFadePx > 0f)
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{
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float fadeAlpha = ComputeEdgeFadeAlpha(desc.anchorPx.x, desc.anchorPx.y, _plotRect.width, _plotRect.height, _edgeFadePx);
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label.style.opacity = fadeAlpha;
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}
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else
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{
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label.style.opacity = 1f;
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}
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}
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public void EndFrame()
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{
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foreach (var kv in _active)
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{
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if (kv.Value.Used) continue;
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RequestHide(kv.Value);
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}
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}
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private void EnsureScaleAnimTicker()
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{
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if (_root == null) return;
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if (_scaleAnimItem != null) return;
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_scaleAnimItem = _root.schedule.Execute(TickScaleAnimations).Every(16);
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}
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private void TickScaleAnimations()
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{
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if (_root == null) return;
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float now = Time.realtimeSinceStartup;
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foreach (var kv in _active)
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{
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var e = kv.Value;
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if (e == null) continue;
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if (!e.ScaleAnimating) continue;
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float t = (now - e.ScaleAnimStartTime) / k_ScaleAnimDurationSec;
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if (t >= 1f)
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{
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e.Scale = e.ScaleTo;
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ApplyScale(e);
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e.ScaleAnimating = false;
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if (e.HideOnScaleZero && e.ScaleTo <= 0f && e.Label != null)
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{
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e.Label.visible = false;
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e.HideOnScaleZero = false;
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}
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continue;
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}
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t = Mathf.Clamp01(t);
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e.Scale = Mathf.Lerp(e.ScaleFrom, e.ScaleTo, t);
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ApplyScale(e);
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}
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}
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private static void ApplyScale(Entry entry)
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{
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if (entry == null) return;
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if (entry.Label == null) return;
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float s = Mathf.Clamp01(entry.Scale);
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entry.Label.transform.scale = new Vector3(s, s, 1f);
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}
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private static void EnsureShown(Entry entry)
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{
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if (entry == null) return;
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if (entry.Label == null) return;
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if (!entry.Label.visible)
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{
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entry.Label.visible = true;
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}
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entry.HideOnScaleZero = false;
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if (entry.ScaleAnimating)
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{
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if (entry.ScaleTo >= 1f) return;
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}
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else
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{
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if (entry.Scale >= 1f) return;
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}
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entry.ScaleFrom = entry.Scale;
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if (entry.ScaleFrom <= 0f) entry.ScaleFrom = 0f;
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entry.ScaleTo = 1f;
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entry.ScaleAnimStartTime = Time.realtimeSinceStartup;
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entry.ScaleAnimating = true;
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ApplyScale(entry);
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}
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private void RequestHide(Entry entry)
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{
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if (entry == null) return;
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if (entry.Label == null) return;
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if (!entry.Label.visible && entry.Scale <= 0f) return;
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// Freeze position while hiding: if the label is under the plot-clipped container,
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// its visual position would keep changing when plotRect/container layout changes.
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// Move it to the overlay container and convert coordinates once when hide starts.
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if (entry.Label.parent == _plotClippedContainer && _overlayContainer != null)
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{
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float x = entry.Label.resolvedStyle.left + _plotRect.x;
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float y = entry.Label.resolvedStyle.top + _plotRect.y;
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entry.Label.RemoveFromHierarchy();
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_overlayContainer.Add(entry.Label);
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entry.Label.style.left = x;
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entry.Label.style.top = y;
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}
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// Hide: no scale animation (per request). Reset scale to 0 so next show animates 0->1.
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entry.HideOnScaleZero = false;
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entry.ScaleAnimating = false;
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entry.ScaleFrom = 0f;
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entry.ScaleTo = 0f;
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entry.Scale = 0f;
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ApplyScale(entry);
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entry.Label.visible = false;
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}
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public void RequestScaleOut(string key)
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{
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if (string.IsNullOrEmpty(key)) return;
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if (!_active.TryGetValue(key, out var entry)) return;
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if (entry == null || entry.Label == null) return;
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if (!entry.Label.visible) return;
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// Already animating to 0
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if (entry.ScaleAnimating && entry.ScaleTo <= 0f) return;
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entry.ScaleFrom = entry.Scale;
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entry.ScaleTo = 0f;
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entry.ScaleAnimStartTime = Time.realtimeSinceStartup;
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entry.ScaleAnimating = true;
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entry.HideOnScaleZero = true;
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ApplyScale(entry);
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}
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private void EnsureContainers()
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{
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if (_root == null) return;
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if (_overlayContainer == null)
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{
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_overlayContainer = new VisualElement();
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_overlayContainer.name = "label-overlay-container";
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_overlayContainer.pickingMode = PickingMode.Ignore;
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_overlayContainer.style.position = Position.Absolute;
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_overlayContainer.style.left = 0;
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_overlayContainer.style.top = 0;
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_overlayContainer.style.right = 0;
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_overlayContainer.style.bottom = 0;
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_overlayContainer.style.overflow = Overflow.Visible;
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_root.Add(_overlayContainer);
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}
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if (_plotClippedContainer == null)
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{
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_plotClippedContainer = new VisualElement();
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_plotClippedContainer.name = "label-plot-clipped-container";
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_plotClippedContainer.pickingMode = PickingMode.Ignore;
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_plotClippedContainer.style.position = Position.Absolute;
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_plotClippedContainer.style.overflow = Overflow.Hidden;
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_root.Add(_plotClippedContainer);
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}
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}
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private VisualElement GetParentContainer(bool clipToPlot)
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{
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if (clipToPlot) return _plotClippedContainer;
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return _overlayContainer;
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}
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private Label GetPooledLabel()
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{
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Label label = _pool.Count > 0 ? _pool.Pop() : new Label();
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label.pickingMode = PickingMode.Ignore;
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return label;
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}
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private static float ComputeEdgeFadeAlpha(float anchorX, float anchorY, float plotWidth, float plotHeight, float fadePx)
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{
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if (fadePx <= 0f) return 1f;
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// Calculate distance from each edge (negative = inside, positive = outside)
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float distLeft = -anchorX;
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float distRight = anchorX - plotWidth;
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float distTop = -anchorY;
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float distBottom = anchorY - plotHeight;
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// Find the maximum overflow distance
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float maxOverflow = Mathf.Max(distLeft, distRight, distTop, distBottom);
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if (maxOverflow <= 0f) return 1f; // Inside plot area
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if (maxOverflow >= fadePx) return 0f; // Beyond fade zone
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// Linear fade from 1 to 0 as we go from edge to fadePx
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return 1f - (maxOverflow / fadePx);
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}
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private static void ApplyAnchor(Label label, ChartLabelAnchor anchor, float x, float y)
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{
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if (label == null) return;
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label.style.left = x;
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label.style.top = y;
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switch (anchor)
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{
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case ChartLabelAnchor.TopLeft:
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label.style.translate = new StyleTranslate(new Translate(0, 0, 0));
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label.style.unityTextAlign = TextAnchor.UpperLeft;
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break;
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case ChartLabelAnchor.Top:
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label.style.translate = new StyleTranslate(new Translate(new Length(-50, LengthUnit.Percent), 0, 0));
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label.style.unityTextAlign = TextAnchor.UpperCenter;
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break;
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case ChartLabelAnchor.TopRight:
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label.style.translate = new StyleTranslate(new Translate(new Length(-100, LengthUnit.Percent), 0, 0));
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label.style.unityTextAlign = TextAnchor.UpperRight;
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break;
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case ChartLabelAnchor.Left:
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label.style.translate = new StyleTranslate(new Translate(0, new Length(-50, LengthUnit.Percent), 0));
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label.style.unityTextAlign = TextAnchor.MiddleLeft;
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break;
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case ChartLabelAnchor.Right:
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label.style.translate = new StyleTranslate(new Translate(new Length(-100, LengthUnit.Percent), new Length(-50, LengthUnit.Percent), 0));
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label.style.unityTextAlign = TextAnchor.MiddleRight;
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break;
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case ChartLabelAnchor.BottomLeft:
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label.style.translate = new StyleTranslate(new Translate(0, new Length(-100, LengthUnit.Percent), 0));
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label.style.unityTextAlign = TextAnchor.LowerLeft;
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break;
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case ChartLabelAnchor.Bottom:
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label.style.translate = new StyleTranslate(new Translate(new Length(-50, LengthUnit.Percent), new Length(-100, LengthUnit.Percent), 0));
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label.style.unityTextAlign = TextAnchor.LowerCenter;
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break;
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case ChartLabelAnchor.BottomRight:
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label.style.translate = new StyleTranslate(new Translate(new Length(-100, LengthUnit.Percent), new Length(-100, LengthUnit.Percent), 0));
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label.style.unityTextAlign = TextAnchor.LowerRight;
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break;
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default:
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label.style.translate = new StyleTranslate(new Translate(new Length(-50, LengthUnit.Percent), new Length(-50, LengthUnit.Percent), 0));
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label.style.unityTextAlign = TextAnchor.MiddleCenter;
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break;
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}
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}
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}
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}
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Reference in New Issue
Block a user