67 lines
2.2 KiB
C#
67 lines
2.2 KiB
C#
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using System.Collections.Generic;
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using TMPro;
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using UnityEngine;
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using UnityEngine.TextCore.LowLevel;
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namespace SceneView
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{
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public static class FontUtilities
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{
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private static readonly Dictionary<string, TMP_FontAsset> _fontCache = new Dictionary<string, TMP_FontAsset>();
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/// <summary>
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/// 根据字体名称从操作系统加载字体，并创建 TMP_FontAsset（带缓存）
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/// 非常遗憾，用不了
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/// </summary>
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/// <param name="fontName">系统字体名称，如 "Arial", "Microsoft YaHei" 等</param>
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/// <returns>对应的 TMP_FontAsset，失败则返回 null</returns>
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public static TMP_FontAsset? GetOrCreateTMPFont(string fontName)
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{
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if (string.IsNullOrWhiteSpace(fontName))
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return null;
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if (_fontCache.TryGetValue(fontName, out var cached))
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return cached;
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var baseFont = Font.CreateDynamicFontFromOSFont(fontName, 12); // 12 是临时大小，不影响 TMP 字体质量
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if (baseFont == null || baseFont.dynamic == false)
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{
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Debug.LogWarning($"Font '{fontName}' not found in OS.");
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return null;
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}
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// 创建 TMP 字体资源
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var tmpFont = TMP_FontAsset.CreateFontAsset(
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baseFont,
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samplingPointSize: 72,
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atlasPadding: 4,
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renderMode: GlyphRenderMode.SDFAA,
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atlasWidth: 1024,
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atlasHeight: 1024,
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atlasPopulationMode: AtlasPopulationMode.Dynamic,
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enableMultiAtlasSupport: true
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);
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if (tmpFont != null)
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{
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_fontCache[fontName] = tmpFont;
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Debug.Log($"Loaded TMP font: {fontName}");
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}
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else
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{
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Debug.LogError($"Failed to create TMP_FontAsset from font: {fontName}");
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}
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return tmpFont;
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}
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/// <summary>
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/// 清空缓存（谨慎使用，通常不需要）
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/// </summary>
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public static void ClearCache()
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{
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_fontCache.Clear();
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}
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}
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}
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