using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using DevExpress.XtraEditors;
using Lskj.PubUtils;
using DevExpress.XtraEditors.Controls;
using System.Reflection;
using CommonLib;
using System.IO;
using System.Drawing.Imaging;

namespace Lskj.MyControl
{
    public partial class LabelPicFileEx : UserControl
    {
        /// <summary>
        /// 存放本地图片未知
        /// </summary>
        private string _localTempPath = Application.StartupPath + "\\tempfiles";

        public string CurrentImagePath = string.Empty;

        private int padding_right = 7;
        public LabelPicFileEx()
        {
            InitializeComponent();
        }

        private string labelText;
        [Description("Label值")]
        public string LabelText
        {
            get { return labelText; }
            set
            {
                labelText = value;
                lbMsg.Text = value;
                pl_left.Width = lbMsg.Width + padding_right;
            }
        }

        [Description("提示文本")]
        public string TipMsg { get; set; }

        [Description("是否允许为空")]
        public bool IsEmpt { get; set; }

        public PictureEdit GetPictureBox { get { return ImgFile;} }

        private string defaultString;

        public string DefaultString
        {
            get { return defaultString; }
            set { defaultString = value; }
        }
        private string unionFields;

        public string UnionFields
        {
            get { return unionFields; }
            set { unionFields = value; }
        }
        private string unionValue;

        public string UnionValue
        {
            get { return unionValue; }
            set { unionValue = value; }
        }

        public event UnionEventHander UnionEvent;
        public delegate void UnionEventHander(object sender);
         
        public event UploadEventHander UploadEvent;
        public delegate void UploadEventHander(object sender);

        public event DeleteEventHander DeleteEvent;
        public delegate void DeleteEventHander(object sender);

        #region 右键菜单事件
        /// <summary>
        /// 剪切
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tsmi_cut_Click(object sender, EventArgs e)
        {
            this.CurrentImagePath = string.Empty;
            InvokeMenuMethod(GetMenu(ImgFile), "OnClickedCut");
        }
        /// <summary>
        /// 拷贝图片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tsmi_copy_Click(object sender, EventArgs e)
        {
            InvokeMenuMethod(GetMenu(ImgFile), "OnClickedCopy");
        }
        /// <summary>
        /// 粘贴图片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tsmi_paste_Click(object sender, EventArgs e)
        {
            this.CurrentImagePath = string.Empty;
            InvokeMenuMethod(GetMenu(ImgFile), "OnClickedPaste");
        }
        /// <summary>
        /// 删除图片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tsmi_delete_Click(object sender, EventArgs e)
        {
            this.CurrentImagePath = string.Empty;
            InvokeMenuMethod(GetMenu(ImgFile), "OnClickedDelete");
            if (DeleteEvent != null)
            {
                DeleteEvent(sender);
            }
        }
        /// <summary>
        /// 加载图片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tsmi_load_Click(object sender, EventArgs e)
        {            
            InvokeMenuMethod(GetMenu(ImgFile), "OnClickedLoad");

            this.CurrentImagePath = string.Empty;   
        }
        /// <summary>
        /// 保存图片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tsmi_save_Click(object sender, EventArgs e)
        {
            InvokeMenuMethod(GetMenu(ImgFile), "OnClickedSave");
        }
        /// <summary>
        /// 关联其他图片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tsmi_union_Click(object sender, EventArgs e)
        {
            if (UnionEvent != null)
            {
                UnionEvent(this);
            }
        }
        /// <summary>
        /// 上传图片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void tsmi_upload_Click(object sender, EventArgs e)
        {
            if (UploadEvent != null)
            {
                UploadEvent(this);
            }
        }
        #endregion

        #region 其他事件
        /// <summary>
        /// 打开之前验证
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void cmsMenu_Opening(object sender, CancelEventArgs e)
        {
            bool isImage = ImgFile.Image == null;

            tsmi_cut.Enabled = !isImage;
            tsmi_copy.Enabled = !isImage;
            tsmi_delete.Enabled = !isImage;
            tsmi_save.Enabled = !isImage;

            tsmi_load.Enabled = true;
            tsmi_union.Enabled = true;

            tsmi_upload.Enabled = !isImage;
            tsmi_paste.Enabled = ClipboardHelper.ContainsImage();
        }
        #endregion

        #region 扩展PictureEdit
        private void InvokeMenuMethod(PictureMenu menu, string name)
        {
            MethodInfo mi = typeof(PictureMenu).GetMethod(name, BindingFlags.NonPublic | BindingFlags.Instance);
            if (mi != null && menu != null)
                mi.Invoke(menu, new object[] { menu, new EventArgs() });
        }
        private PictureMenu GetMenu(PictureEdit edit)
        {
            PropertyInfo pi = typeof(PictureEdit).GetProperty("Menu", BindingFlags.NonPublic | BindingFlags.Instance);
            if (pi != null)
                return pi.GetValue(edit, null) as PictureMenu;
            return null;
        }
        #endregion

        /// <summary>
        /// 保存图片到本地
        /// <return>存放的路径</return>
        /// </summary>
        public string SaveImageToLocal(string prefix)
        {
            try
            {
                Image img = this.GetPictureBox.Image;
                if (img != null)
                {
                    //string fileName = string.IsNullOrWhiteSpace(CurrentImagePath) ? prefix + "_" + Guid.NewGuid().ToString() + ".png" : Path.GetFileName(CurrentImagePath);
                    string fileName = prefix + "_" + Guid.NewGuid().ToString().Replace("-", "") + ".jpg";
                    string tempPath = Path.Combine(new string[] { _localTempPath, fileName });

                    this.CurrentImagePath = tempPath;
                    // 不存在创建目录
                    if (!Directory.Exists(Path.Combine(new string[] { _localTempPath })))
                    {
                        Directory.CreateDirectory(Path.Combine(_localTempPath));
                    }
                    if (!File.Exists(tempPath))
                    {
                        Bitmap bitmap = new Bitmap(img);
                        bitmap.Save(tempPath);
                    }

                    return (File.Exists(tempPath)) ? tempPath : string.Empty;
                }
            }
            catch (Exception)
            {
            }
            return string.Empty;
        }

        private void ImgFile_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            FrmImageDialog imageDialog = new FrmImageDialog();
            imageDialog.ImageSource = this.ImgFile.Image;
            imageDialog.ShowDialog();
        }
    }
}