using UnityEngine;
using UnityEngine.UI;

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

public class ImagePlus : Image
{
    #region 变量

    public Text Text
    {
        get
        {
            if (Text_ == null)
            {
                Text_ = GetComponentInParent<Text>();
            }

            return Text_;
        }
        set { Text_ = value; }
    }

    private Text Text_;

    public bool Draw;

    public List<UIVertex[]> VerticesList;

    #endregion

    public void UpdateStatus(bool draw, VertexHelper empty, List<UIVertex> vertexList)
    {
        Draw = draw;

        if (Draw)
        {
            if (Application.isPlaying)
            {
                if (sprite == null)
                {
                    Auxiliary.Instance.DelayCall
                        (
                            () =>
                            {
                                sprite = ResourceManager.LoadSprite("Atlas", Folder.Atlas);
                            },
                            1
                        );
                }
            }

            VerticesList = new List<UIVertex[]>();

            if (vertexList.Valid())
            {
                for (int i = 0; i < vertexList.Count; i += 4)
                {
                    UIVertex v0 = vertexList[i + 0];
                    UIVertex v1 = vertexList[i + 1];
                    UIVertex v2 = vertexList[i + 2];
                    UIVertex v3 = vertexList[i + 3];

                    v0.color *= color;
                    v1.color *= color;
                    v2.color *= color;
                    v3.color *= color;

                    VerticesList.Add
                        (
                            new UIVertex[]
                            {
                                v0,
                                v1,
                                v2,
                                v3
                            }
                        );
                }
            }

            OnPopulateMesh(empty);
        }

        Auxiliary.Instance.DelayCall
            (
                () =>
                {
                    SetVerticesDirty();
                },
                2
            );
    }

    protected override void OnPopulateMesh(VertexHelper toFill)
    {
        toFill.Clear();
        
        if (Draw)
        {
            if (VerticesList.Valid())
            {
                for (int i = 0; i < VerticesList.Count; i++)
                {
                    toFill.AddUIVertexQuad(VerticesList[i]);
                }
            }
        }
    }
}