AudioLocalizationElementDrawer.cs

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using UnityEngine;
using UnityEditor;

namespace HKI.Core.Loc.Editor
{
    [CustomPropertyDrawer(typeof(AudioLocalization.AudioLocalizationElement))]
    public class AudioLocalizationElementDrawer : PropertyDrawer
    {
        // OnGUI function
        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
        {
            float languageRectWidth = 80.0f;
            float volumeLabelRectWidth = 50.0f;
            float volumeRectWidth = position.width * 0.15f;
            float pitchLabelRectWidth = 35.0f;
            float pitchRectWidth = position.width * 0.35f;
            float space = 2.0f;

            Rect languageRect = new Rect(position.x, position.y, languageRectWidth, position.height);
            Rect localizationClipRect = new Rect(position.x + languageRectWidth + space, position.y, position.width - languageRectWidth - 5 * space - volumeRectWidth - pitchRectWidth - volumeLabelRectWidth - pitchLabelRectWidth, position.height);
            Rect volumeLabelRect = new Rect(position.x + position.width - pitchRectWidth - 3 * space - pitchLabelRectWidth - volumeRectWidth - volumeLabelRectWidth, position.y, volumeLabelRectWidth, position.height);
            Rect volumeRect = new Rect(position.x + position.width - pitchRectWidth - 2 * space - pitchLabelRectWidth - volumeRectWidth, position.y, volumeRectWidth, position.height);
            Rect pitchLabelRect = new Rect(position.x + position.width - pitchRectWidth - space - pitchLabelRectWidth, position.y, pitchLabelRectWidth, position.height);
            Rect pitchRect = new Rect(position.x + position.width - pitchRectWidth, position.y, pitchRectWidth, position.height);

            EditorGUI.PropertyField(languageRect, property.FindPropertyRelative("Language"), GUIContent.none);
            EditorGUI.PropertyField(localizationClipRect, property.FindPropertyRelative("Clip"), GUIContent.none);
            EditorGUI.LabelField(volumeLabelRect, "Volume:");
            EditorGUI.PropertyField(volumeRect, property.FindPropertyRelative("Volume"), GUIContent.none);
            EditorGUI.LabelField(pitchLabelRect, "Pitch:");
            EditorGUI.PropertyField(pitchRect, property.FindPropertyRelative("Pitch"), GUIContent.none);
        }
    }
}