Changing How TableMatrix Cells Are Drawn

If you want to change how the TwoDimensionalArrayDrawer draws its cells you have to add the TableMatrix attribute to the field and supply a method name to the DrawElementMethod parameter of the TableMatrix Attribute. This method name gets resolved using ActionResolvers and will be called for each cell. Inside of this function you use normal Unity GUI functions or Odin's GUI functions to draw the cell's contents. Odin can pass a few arguments to the provided function via [NamedValues], these are the possible arguments:

Name	Type
rect	Rect
element	TElement
value	TElement
array	TArray
x	int
y	int

public class SomeMonoBehaviour : SerializedMonoBehaviour
{   
    [TableMatrix(DrawElementMethod = nameof(DrawElement))]
    public GameObject[,] SomeTwoDimensionalArray = new GameObject[3, 3];

    private GameObject DrawElement(Rect rect, GameObject value)
    {
        // Draw your cell content here
        // [...]

        return value;
    }  
}

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Here is a small complete example that shows how you could change the preview texture that Odin draws for your class inside the TwoDimensionalArrayDrawer.

SomeMonoBehaviour.cs

using Sirenix.OdinInspector;
using Sirenix.Utilities.Editor;
using UnityEngine;

public class SomeMonoBehaviour : SerializedMonoBehaviour
{
    [TableMatrix(DrawElementMethod = nameof(DrawElement), SquareCells = true)]
    public Item[,] Items = new Item[3, 3];

    private Item DrawElement(Rect rect, Item value)
    {
        return (Item)SirenixEditorFields.UnityPreviewObjectField(
            rect: rect,
            value: value,
            texture: value?.Preview, // We provide a custom preview texture
            type: typeof(Item)
        );
    } 
}

Item.cs

using UnityEngine;

[CreateAssetMenu]
public class Item : ScriptableObject
{
    public string Name;
    public string Description;
    public Texture2D Preview;
}

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Default

Custom

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Last update: September 30, 2021