using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Xml;
using System;


public class CustomFontImportor : MonoBehaviour
{
    public Font font;
    public TextAsset textAsset;

    //解析xml格式的fnt
    // void Awake()
    // {
    //     if (font == null || textAsset == null)
    //     {
    //         //Debug.LogError("请设置font和textAsset.");
    //         return;
    //     }

    //     XmlDocument xmlDocument = new XmlDocument();
    //     xmlDocument.LoadXml(textAsset.text);


    //     int totalWidth = Convert.ToInt32(xmlDocument["font"]["common"].Attributes["scaleW"].InnerText);
    //     int totalHeight = Convert.ToInt32(xmlDocument["font"]["common"].Attributes["scaleH"].InnerText);

    //     XmlElement xml = xmlDocument["font"]["chars"];
    //     ArrayList characterInfoList = new ArrayList();


    //     for (int i = 0; i < xml.ChildNodes.Count; ++i)
    //     {
    //         XmlNode node = xml.ChildNodes[i];
    //         if (node.Attributes == null)
    //         {
    //             continue;
    //         }
    //         int index = Convert.ToInt32(node.Attributes["id"].InnerText);
    //         int x = Convert.ToInt32(node.Attributes["x"].InnerText);
    //         int y = Convert.ToInt32(node.Attributes["y"].InnerText);
    //         int width = Convert.ToInt32(node.Attributes["width"].InnerText);
    //         int height = Convert.ToInt32(node.Attributes["height"].InnerText);
    //         int xOffset = Convert.ToInt32(node.Attributes["xoffset"].InnerText);
    //         int yOffset = Convert.ToInt32(node.Attributes["yoffset"].InnerText);
    //         int xAdvance = Convert.ToInt32(node.Attributes["xadvance"].InnerText);
    //         CharacterInfo info = new CharacterInfo();
    //         Rect uv = new Rect();
    //         uv.x = (float)x / totalWidth;
    //         uv.y = (float)(totalHeight - y - height) / totalHeight;
    //         uv.width = (float)width / totalWidth;
    //         uv.height = (float)height / totalHeight;
    //         info.index = index;
    //         info.uvBottomLeft = new Vector2(uv.xMin, uv.yMin);
    //         info.uvBottomRight = new Vector2(uv.xMax, uv.yMin);
    //         info.uvTopLeft = new Vector2(uv.xMin, uv.yMax);
    //         info.uvTopRight = new Vector2(uv.xMax, uv.yMax);
    //         info.minX = xOffset;
    //         info.maxX = xOffset + width;
    //         info.minY = -yOffset - height;
    //         info.maxY = -yOffset;
    //         info.advance = xAdvance;
    //         info.glyphWidth = width;
    //         info.glyphHeight = height;
    //         characterInfoList.Add(info);
    //     }
    //     font.characterInfo = characterInfoList.ToArray(typeof(CharacterInfo)) as CharacterInfo[];
    //     Debug.Log("生成成功.");
    // }

    //解析txt格式的fnt
    void Start()
    {
        if (font == null || textAsset == null)
        {
            //Debug.LogError("请设置font和textAsset.");
            return;
        }

        Hashtable kvs = new Hashtable();
        List<Hashtable> chars = new List<Hashtable>();
        string[] kvStrs = textAsset.text.Split(new char[]{' ', '\n'});
        Hashtable charInfo = null;
        int charListIndex = 0;
        foreach (var kvStr in kvStrs)
        {
            if (kvStr.Trim().Length == 0) continue;
            if (kvStr == "char") {
                if (charListIndex != chars.Count) chars.Add(charInfo);
                charInfo = new Hashtable();
                charListIndex++;
                continue;
            }
            if (!kvStr.Contains("=")) continue;
            string k = kvStr.Split(new char[]{'='})[0];
            string v = kvStr.Split(new char[]{'='})[1];
            if (charInfo != null) {
                charInfo.Add(k, v);
                continue;
            } 
            kvs.Add(k, v);
        }
        if (charListIndex != chars.Count) chars.Add(charInfo);

        int totalWidth = Convert.ToInt32(kvs["scaleW"]);
        int totalHeight = Convert.ToInt32(kvs["scaleH"]);

        ArrayList characterInfoList = new ArrayList();

        for (int i = 0; i < chars.Count; ++i)
        {
            Hashtable charRecord = chars[i];
            int index = Convert.ToInt32(charRecord["id"]);
            int x = Convert.ToInt32(charRecord["x"]);
            int y = Convert.ToInt32(charRecord["y"]);
            int width = Convert.ToInt32(charRecord["width"]);
            int height = Convert.ToInt32(charRecord["height"]);
            int xOffset = Convert.ToInt32(charRecord["xoffset"]);
            int yOffset = Convert.ToInt32(charRecord["yoffset"]);
            int xAdvance = Convert.ToInt32(charRecord["xadvance"]);
            CharacterInfo info = new CharacterInfo();
            Rect uv = new Rect();
            uv.x = (float)x / totalWidth;
            uv.y = (float)(totalHeight - y - height) / totalHeight;
            uv.width = (float)width / totalWidth;
            uv.height = (float)height / totalHeight;
            info.index = index;
            info.uvBottomLeft = new Vector2(uv.xMin, uv.yMin);
            info.uvBottomRight = new Vector2(uv.xMax, uv.yMin);
            info.uvTopLeft = new Vector2(uv.xMin, uv.yMax);
            info.uvTopRight = new Vector2(uv.xMax, uv.yMax);
            info.minX = xOffset;
            info.maxX = xOffset + width;
            info.minY = -yOffset - height;
            info.maxY = -yOffset;
            info.advance = xAdvance;
            info.glyphWidth = width;
            info.glyphHeight = height;
            characterInfoList.Add(info);
        }
        font.characterInfo = characterInfoList.ToArray(typeof(CharacterInfo)) as CharacterInfo[];
        Debug.Log("生成成功.");
    }
}