using UnityEditor;
using UnityEngine;

using System.Collections;
using System.Collections.Generic;

[CustomEditor(typeof(SpriteAsset))]
public class EditorSpriteAsste : Editor
{
	#region 变量

    private Vector2 ScrollPos;

    #endregion

	private void OnEnable()
	{
	    
	}

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

        if (GUILayout.Button("GetSpriteInfo"))
        {
            GetSpriteInfo();
        }

        ScrollPos = GUILayout.BeginScrollView(ScrollPos, false, false);

        if (SpriteAsset.SpriteInfoList != null)
        {
            for (int i = 0; i < SpriteAsset.SpriteInfoList.Count; i++)
            {
                SpriteInfo spriteInfo = SpriteAsset.SpriteInfoList[i];

                EditorGUILayout.ObjectField("", spriteInfo.Sprite, typeof(Sprite), false);

                GUILayout.BeginVertical();

                EditorGUILayout.LabelField("Name : " + spriteInfo.Name);

                EditorGUILayout.LabelField("LowerLeft : " + spriteInfo.UvList[0]);
                EditorGUILayout.LabelField("UpperLeft : " + spriteInfo.UvList[1]);
                EditorGUILayout.LabelField("UpperRight : " + spriteInfo.UvList[2]);
                EditorGUILayout.LabelField("LowerRight : " + spriteInfo.UvList[3]);

                EditorGUILayout.LabelField("");

                GUILayout.EndVertical();
            }
        }

        GUILayout.EndScrollView();
    }


    private void GetSpriteInfo()
    {
        SpriteAsset.SpriteInfoList = new List<SpriteInfo>();

        string path = AssetDatabase.GetAssetPath(SpriteAsset.Texture);

        Object[] objects = AssetDatabase.LoadAllAssetsAtPath(path);

        for (int i = 0; i < objects.Length; i++)
        {
            if (objects[i] is Sprite)
            {
                Sprite sprite = (Sprite) objects[i];
                SpriteInfo spriteInfo = new SpriteInfo();
                
                spriteInfo.Sprite = sprite;
                spriteInfo.Name = sprite.name;

                float width = SpriteAsset.Texture.width;
                float height = SpriteAsset.Texture.height;

                Vector2 llUv = new Vector2(sprite.rect.xMin/width, sprite.rect.yMin/height);
                Vector2 ulUv = new Vector2(sprite.rect.xMin/width, sprite.rect.yMax/height);
                Vector2 urUv = new Vector2(sprite.rect.xMax/width, sprite.rect.yMax/height);
                Vector2 lrUv = new Vector2(sprite.rect.xMax/width, sprite.rect.yMin/height);
                
                spriteInfo.UvList = new List<Vector2>();
                spriteInfo.UvList.Add(llUv);
                spriteInfo.UvList.Add(ulUv);
                spriteInfo.UvList.Add(urUv);
                spriteInfo.UvList.Add(lrUv);

                SpriteAsset.SpriteInfoList.Add(spriteInfo);
            }
        }
    }
}