100 lines
4.2 KiB
C#
100 lines
4.2 KiB
C#
using UnityEngine;
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using UnityEngine.UI;
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using TMPro;
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namespace BaseGames.UI.Theme
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{
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/// <summary>
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/// 将 <see cref="UIThemeSO"/> 中的视觉令牌应用到当前 GameObject 及其子节点。
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///
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/// 用法：
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/// 1. 在 Prefab 根节点挂载此组件并指定 <see cref="_theme"/>；
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/// 2. 在每个需要主题化的子节点添加 <see cref="UIThemeRole"/> 组件指定角色；
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/// 3. <see cref="Apply"/> 会被 <see cref="OnEnable"/> 自动调用一次，
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/// 也可在主题切换后手动调用。
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///
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/// 性能：使用 <see cref="Component.GetComponentsInChildren{T}(bool)"/> 一次性收集，
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/// 仅在 Enable / 显式刷新时执行；运行时无每帧成本。
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/// </summary>
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[DisallowMultipleComponent]
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public class UIThemeApplier : MonoBehaviour
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{
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[SerializeField] private UIThemeSO _theme;
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[Tooltip("启用时自动应用一次。运行时切换主题可手动调用 Apply()。")]
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[SerializeField] private bool _applyOnEnable = true;
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private void OnEnable()
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{
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if (_applyOnEnable) Apply();
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}
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/// <summary>用当前 <see cref="_theme"/> 覆盖子节点上所有 <see cref="UIThemeRole"/> 标记。</summary>
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public void Apply()
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{
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if (_theme == null) return;
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var roles = GetComponentsInChildren<UIThemeRole>(includeInactive: true);
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for (int i = 0; i < roles.Length; i++)
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ApplyRole(roles[i], _theme);
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}
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/// <summary>运行时切换主题。</summary>
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public void SetTheme(UIThemeSO theme)
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{
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_theme = theme;
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Apply();
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}
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private static void ApplyRole(UIThemeRole role, UIThemeSO theme)
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{
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if (role == null) return;
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switch (role.Kind)
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{
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case UIThemeRoleKind.Graphic_Primary: SetGraphicColor(role, theme.Primary); break;
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case UIThemeRoleKind.Graphic_Secondary: SetGraphicColor(role, theme.Secondary); break;
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case UIThemeRoleKind.Graphic_Accent: SetGraphicColor(role, theme.Accent); break;
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case UIThemeRoleKind.Graphic_Background: SetGraphicColor(role, theme.Background); break;
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case UIThemeRoleKind.Graphic_Success: SetGraphicColor(role, theme.Success); break;
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case UIThemeRoleKind.Graphic_Warning: SetGraphicColor(role, theme.Warning); break;
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case UIThemeRoleKind.Graphic_Danger: SetGraphicColor(role, theme.Danger); break;
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case UIThemeRoleKind.Text_Primary: SetTextStyle(role, theme.TextPrimary, theme.BodyFont, theme.BodyFontSize); break;
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case UIThemeRoleKind.Text_Secondary: SetTextStyle(role, theme.TextSecondary, theme.BodyFont, theme.SmallFontSize); break;
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case UIThemeRoleKind.Text_Header: SetTextStyle(role, theme.TextPrimary, theme.HeaderFont, theme.HeaderFontSize); break;
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case UIThemeRoleKind.Text_Disabled: SetTextStyle(role, theme.TextDisabled, theme.BodyFont, theme.BodyFontSize); break;
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case UIThemeRoleKind.Button: SetButtonColors(role, theme); break;
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}
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}
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private static void SetGraphicColor(UIThemeRole role, Color c)
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{
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var g = role.GetComponent<Graphic>();
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if (g != null) g.color = c;
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}
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private static void SetTextStyle(UIThemeRole role, Color c, TMP_FontAsset font, float size)
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{
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var tmp = role.GetComponent<TMP_Text>();
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if (tmp != null)
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{
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tmp.color = c;
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if (font != null) tmp.font = font;
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if (role.OverrideFontSize) tmp.fontSize = size;
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}
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}
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private static void SetButtonColors(UIThemeRole role, UIThemeSO theme)
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{
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var btn = role.GetComponent<Button>();
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if (btn == null) return;
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var cb = btn.colors;
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cb.normalColor = theme.ButtonNormal;
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cb.highlightedColor = theme.ButtonHighlighted;
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cb.pressedColor = theme.ButtonPressed;
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cb.disabledColor = theme.ButtonDisabled;
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btn.colors = cb;
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}
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}
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}
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