XCharts/Scripts/Editor/PropertyDrawers/LineArrowDrawer.cs

using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

namespace XCharts
{
    [CustomPropertyDrawer(typeof(LineArrow), true)]
    public class LineArrowStyleDrawer : PropertyDrawer
    {
        private Dictionary<string, bool> m_LineArrowToggle = new Dictionary<string, bool>();

        public override void OnGUI(Rect pos, SerializedProperty prop, GUIContent label)
        {
            Rect drawRect = pos;
            drawRect.height = EditorGUIUtility.singleLineHeight;
            SerializedProperty show = prop.FindPropertyRelative("m_Show");
            SerializedProperty m_Position = prop.FindPropertyRelative("m_Position");
            SerializedProperty m_Width = prop.FindPropertyRelative("m_Width");
            SerializedProperty m_Height = prop.FindPropertyRelative("m_Height");
            SerializedProperty m_Offset = prop.FindPropertyRelative("m_Offset");
            SerializedProperty m_Dent = prop.FindPropertyRelative("m_Dent");
            ChartEditorHelper.MakeFoldout(ref drawRect, ref m_LineArrowToggle, prop, "Line Arrow", show, false);
            drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
            if (ChartEditorHelper.IsToggle(m_LineArrowToggle, prop))
            {
                ++EditorGUI.indentLevel;
                EditorGUI.PropertyField(drawRect, m_Position);
                drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
                EditorGUI.PropertyField(drawRect, m_Width);
                drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
                EditorGUI.PropertyField(drawRect, m_Height);
                drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
                EditorGUI.PropertyField(drawRect, m_Offset);
                drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
                EditorGUI.PropertyField(drawRect, m_Dent);
                drawRect.y += EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
                --EditorGUI.indentLevel;
            }
        }

        public override float GetPropertyHeight(SerializedProperty prop, GUIContent label)
        {
            float height = 0;
            if (ChartEditorHelper.IsToggle(m_LineArrowToggle, prop))
            {
                height += 6 * EditorGUIUtility.singleLineHeight + 5 * EditorGUIUtility.standardVerticalSpacing;
            }
            else
            {
                height += 1 * EditorGUIUtility.singleLineHeight + 1 * EditorGUIUtility.standardVerticalSpacing;
            }
            return height;
        }
    }
}