【Unity】Buttonクラスを継承して拡張Buttonクラスを作る

はじめに

UnityのButtonを拡張したり、OnPointerDownとOnPointerUpを取得したいときの処理を備忘録として掲載します。

ソース

using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

#if UNITY_EDITOR
using UnityEditor;
using UnityEditor.UI;
#endif

public class MyButton : Button
{
    [SerializeField]
    private ButtonClickedEvent m_OnDown = new ButtonClickedEvent();

    [SerializeField]
    private ButtonClickedEvent m_OnUp = new ButtonClickedEvent();


    public override void OnPointerClick(PointerEventData eventData)
    {
        base.OnPointerClick(eventData);

        Debug.Log("MyButton OnPointerClick");
    }

    public override void OnPointerDown(PointerEventData eventData)
    {
        base.OnPointerDown(eventData);

        Debug.Log("MyButton OnPointerDown");
        m_OnDown?.Invoke();
    }

    public override void OnPointerUp(PointerEventData eventData)
    {
        base.OnPointerUp(eventData);

        Debug.Log("MyButton OnPointerUp");

        m_OnUp?.Invoke();
    }

}

#if UNITY_EDITOR

[CustomEditor(typeof(MyButton), true)]
[CanEditMultipleObjects]
public class MyButtonEditor : ButtonEditor
{
    SerializedProperty m_OnUpProperty;
    SerializedProperty m_OnDownProperty;

    protected override void OnEnable()
    {
        base.OnEnable();
        m_OnUpProperty = serializedObject.FindProperty("m_OnUp");
        m_OnDownProperty = serializedObject.FindProperty("m_OnDown");
    }

    public override void OnInspectorGUI()
    {
        base.OnInspectorGUI();
        EditorGUILayout.Space();

        serializedObject.Update();
        EditorGUILayout.PropertyField(m_OnUpProperty);
        EditorGUILayout.PropertyField(m_OnDownProperty);
        serializedObject.ApplyModifiedProperties();
    }
}

#endif

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