using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using WMS.Base.WebService;
using WMS.Model.Base;
using System.IO;

namespace WMS.Frm.Base
{
    public partial class FrmGoods : Form
    {
        private static FrmGoods goods;
        private string oldGoodsID;
        
        /// <summary>
        /// 实例化Goods的一个对象
        /// </summary>
        /// <returns>Goods对象</returns>
        public static FrmGoods GetInstance()
        {
            if (goods == null || goods.IsDisposed)
            {
                goods = new FrmGoods();
            }

            return goods;
        }

        public FrmGoods()
        {
            InitializeComponent();
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            this.Opacity = 0.6;
        }

        public bool Set(string goodsID,Point point)
        {
            if (oldGoodsID != goodsID) {
                //获取商品信息
                string strGoodsList = WebLockConfig.Instance.Goods.GetGoodsList(goodsID, "", "", "");
                List<GoodsInfoModel> list = Newtonsoft.Json.JsonConvert.DeserializeObject<List<GoodsInfoModel>>(strGoodsList);
                if (list.Count == 0)
                {
                    return false;
                }
                GoodsInfoModel goods = list[0];
                //显示图片
                if (goods.IMG != null)
                {
                    MemoryStream ms = new System.IO.MemoryStream(goods.IMG);
                    pictureEdit.Image = System.Drawing.Image.FromStream(ms);
                    this.pictureEdit.Size = pictureEdit.Image.Size;
                    this.ClientSize = this.pictureEdit.Size;
                    
                }
                oldGoodsID = goodsID;
            }

            if (pictureEdit.Image == null) {
                return false;
            }

            //根据图片调整位置
            int screenHeight = Screen.GetWorkingArea(this).Height;
            if (point.Y + pictureEdit.Image.Height > screenHeight)
            {
                point = new Point(point.X, point.Y - pictureEdit.Image.Height - 20);
            }
            this.Location = point;

            return true;
        }


        ///// <summary>
        ///// 修改窗体的Paint事件，美化界面，这里做一个渐变背景，需要引入System.Drawing.Drawing2D;
        ///// </summary>
        ///// <param name="sender"></param>
        ///// <param name="e"></param>
        //private void Goods_Paint(object sender, PaintEventArgs e)
        //{
        //    Graphics g = e.Graphics;
        //    Color FColor = Color.Red;
        //    Color TColor = Color.Yellow;
        //    Brush b = new LinearGradientBrush(this.ClientRectangle, FColor, TColor, LinearGradientMode.ForwardDiagonal);
        //    g.FillRectangle(b, this.ClientRectangle);
        //}

        ////实现鼠标拖动悬浮窗体
        //const int WM_NCHITTEST = 0x0084;
        //const int HTCLIENT = 0x0001;
        //const int HTCAPTION = 0x0002;
        //protected override void WndProc(ref System.Windows.Forms.Message m)
        //{
        //    switch (m.Msg)
        //    {
        //        case WM_NCHITTEST:
        //            base.WndProc(ref m);
        //            if (m.Result == (IntPtr)HTCLIENT)
        //                m.Result = (IntPtr)HTCAPTION;
        //            break;
        //        default:
        //            base.WndProc(ref m);
        //            break;
        //    }
        //}
    }
}