83 lines
2.8 KiB
C#
83 lines
2.8 KiB
C#
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using System;
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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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namespace Plugins.Animate_UI_Materials
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{
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[ExecuteAlways]
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[AddComponentMenu("UI/Animate UI Material/GraphicMaterialOverride")]
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public class GraphicMaterialOverride : BufferedMaterialModifier
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{
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/// <summary>
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/// Recreate the modified material using each active IMaterialPropertyModifier on this GameObject or its children
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/// </summary>
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public void SetMaterialDirty()
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{
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if (TryGetComponent(out Graphic graphic))
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{
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graphic.SetMaterialDirty();
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}
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}
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/// <summary>
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/// A buffer list to accelerate GetComponents requests
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/// </summary>
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[NonSerialized] List<IMaterialPropertyModifier> _modifiers;
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/// <summary>
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/// Retrieves all enabled IMaterialPropertyModifiers belonging to direct children
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/// </summary>
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/// <returns>An iterator over all enabled modifiers, avoid storing this value</returns>
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public IEnumerable<IMaterialPropertyModifier> GetModifiers(bool includeInactive = false)
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{
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// Ensure the buffer list is available
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_modifiers ??= new List<IMaterialPropertyModifier>();
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// Load all IPropertyModifiers belonging the direct children of this GameObject
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foreach (Transform child in transform)
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{
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// skip this GameObject if disabled
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if (!child.gameObject.activeSelf && !includeInactive) continue;
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// disabled children will be ignored
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child.GetComponents(_modifiers);
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// Call the children to apply their modified properties
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foreach (IMaterialPropertyModifier propertyModifier in _modifiers)
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{
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// Check if the modifier is enabled (skip if not)
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if (propertyModifier.enabled || includeInactive)
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{
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yield return propertyModifier;
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}
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}
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}
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// Ensure no ref is kept
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_modifiers.Clear();
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}
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// On enable and disable, update the target graphic
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void OnEnable() => SetMaterialDirty();
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void OnDisable() => SetMaterialDirty();
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/// <summary>
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/// Called by Graphic using the IMaterialModifier interface through the parent class
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/// Modifies the buffered material to match all children component specifications
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/// </summary>
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/// <param name="modifiedMaterial">A copy of the Graphic base material, buffered for reuse</param>
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protected override void ModifyMaterial(Material modifiedMaterial)
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{
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// Iterate over all active modifiers
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foreach (IMaterialPropertyModifier modifier in GetModifiers())
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{
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// Ignore un-init modifiers
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if (!string.IsNullOrEmpty(modifier.PropertyName))
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{
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// Apply the property to the new material
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modifier.ApplyModifiedProperty(modifiedMaterial);
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}
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}
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}
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}
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}
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