using UnityEngine;
using UnityEditor;

public class SimpleImageViewerWindow : EditorWindow
{
    private Texture2D image;
    private string imagePath = "Assets/ResRaw/zh.png";
    
    // 手动设置显示尺寸
    private float displayWidth = 389f;
    private float displayHeight = 690f;

    [MenuItem("NBC/ZH/Simple Image Viewer")]
    public static void ShowWindow()
    {
        GetWindow<SimpleImageViewerWindow>("Game");
    }

    private void OnEnable()
    {
        // 加载图片
        image = AssetDatabase.LoadAssetAtPath<Texture2D>(imagePath);
        if (image == null)
        {
            Debug.LogError($"无法加载图片: {imagePath}");
        }
    }

    private void OnGUI()
    {
        if (image == null)
        {
            EditorGUILayout.HelpBox($"图片加载失败: {imagePath}", MessageType.Error);
            return;
        }

        // // 显示尺寸设置
        // EditorGUILayout.LabelField("显示尺寸设置", EditorStyles.boldLabel);
        // displayWidth = EditorGUILayout.FloatField("宽度", displayWidth);
        // displayHeight = EditorGUILayout.FloatField("高度", displayHeight);

        // EditorGUILayout.Space();

        // 计算居中所需的水平间距
        float horizontalSpace = (position.width - displayWidth) / 2;
        horizontalSpace = Mathf.Max(0, horizontalSpace);

        // 创建水平布局来实现居中
        GUILayout.BeginHorizontal();
        {
            // 左侧空白区域
            GUILayout.Space(horizontalSpace);
            
            // 绘制图片
            Rect imageRect = GUILayoutUtility.GetRect(displayWidth, displayHeight);
            imageRect.width = displayWidth;
            imageRect.height = displayHeight;
            GUI.DrawTexture(imageRect, image, ScaleMode.StretchToFill);
            
            // 右侧空白区域
            GUILayout.Space(horizontalSpace);
        }
        GUILayout.EndHorizontal();

        // // 显示图片信息
        // EditorGUILayout.Space();
        // EditorGUILayout.LabelField("图片信息", EditorStyles.boldLabel);
        // EditorGUILayout.LabelField($"路径: {imagePath}");
        // EditorGUILayout.LabelField($"Unity纹理尺寸: {image.width} x {image.height}");
        // EditorGUILayout.LabelField($"显示尺寸: {displayWidth} x {displayHeight}");
    }
}