MES_Client/TGMES/Core.Mes.Client.Comm/Control/ctrlFileDown.cs

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 System.IO;
using System.Collections;
using Core.Mes.Client.Comm.Server;
using System.Diagnostics;
using Core.Mes.Client.Comm.Control;
using Core.Mes.Client.Comm.Tool;

namespace Core.Mes.Client.Comm.Control
{
    public delegate void FileChange(string fileName);
    public delegate void FileDelete();
    public partial class ctrlFileDown : UserControl
    {
        //坐标系数
        private double _btn1 = 0;
        private double _btn2 = 0;
        private double _btn3 = 0;
        private double _lbl2X = 0;
        private double _lbl2Y = 0;

        public ctrlFileDown()
        {
            InitializeComponent();
            if (this.DesignMode) return;
            _btn1 = (double)button1.Location.X / (double)this.panel1.Width;
            _btn2 = (double)button2.Location.X / (double)this.panel1.Width;
            _btn3 = (double)button3.Location.X / (double)this.panel1.Width;
            _lbl2X = (double)label2.Location.X / (double)this.pictureBox1.Width;
            _lbl2Y = (double)label2.Location.Y / (double)this.pictureBox1.Height;
        }

        private string strPath = "";//定义文件路径字段
        private List<Image> ing = new List<Image>();
        private ArrayList ingname = new ArrayList();
        private List<FileBean> list = new List<FileBean>();
        private string currentFileName = "";

        public event FileChange FileChangeEvent;
        public event FileDelete FileDeleteEvent;

        [Browsable(true)]
        public List<FileBean> List
        {
            get { return list; }
            set { list = value; }
        }

        int i = 0;
        int j = 0;
        int a = 0;
        bool fal = false;
        public string spathName = "";
        public string FilePath
        {
            get 
            { 
                return spathName; 
            }
            set 
            { 
                spathName = value;
                FlileDown(spathName);
            }
        }

        public void FlileDown(string pathName)
        {
            if (this.DesignMode) return;
            if (pathName == "" || pathName == null) return;
            List<FileBean> list = Core.Mes.Client.Comm.Server.FileHelper.Download(pathName);
            ShowByListFileBean(list);
        }

        /// <summary>
        /// 通过文件集合（图片）显示出来。
        /// </summary>
        /// <param name="list"></param>
        public void ShowByListFileBean(List<FileBean> list)
        {
            if (list == null) return;
            j = 0;
            i = 0;
            ing.Clear();
            ingname.Clear();
            this.list = list;
            ClearTmp();
            foreach (FileBean bean in list)
            {
                Image image;
                try
                {
                    image = FileHelper.BytesToBitmap(bean.getFile());
                }
                catch
                {
                    image = null;
                    WriteBytesToTmp(bean.getFile(), bean.getFileName());
                }

                ing.Add(image);
                ingname.Add(bean.getFileName());
                if (ing[0] != null)
                {
                    PictureBoxHelper.LoadThumbnailImage((Bitmap)ing[0], pictureBox1);
                }
                this.currentFileName = list[0].getFileName();
                if (FileChangeEvent != null)
                {
                    FileChangeEvent(currentFileName);
                }
                //PictureBoxHelper.LoadThumbnailImage(pictureBox1);
                j = j + 1;
            }
            if (ing.Count == 0)
            {
                button1.Visible = false;
                button2.Visible = false;
                fal = false;
                this.pictureBox1.Image = null;
                this.currentFileName = "";
                if (FileChangeEvent != null)
                {
                    FileChangeEvent(currentFileName);
                }
                // MessageBox.Show("文件夹是空的", "提示");  LX 修改
                label1.Text = "0/0";
            }
            else
            {
                button1.Visible = true;
                button2.Visible = true;
                fal = true;
                label1.Text = "1/" + j;
            }
            ShowDontViewBnt();
        }

        private void WriteBytesToTmp(byte[] Bytes, string fileName)
        {
            try
            {
                string tmpPath = Environment.CurrentDirectory + "\\Tmp\\";
                FileStream fs = new FileStream(tmpPath + fileName, FileMode.Create);
                fs.Write(Bytes, 0, Bytes.Length);
                fs.Flush();
                fs.Close();
            }
            catch { }
        }

        private void ClearTmp()
        {
            string tmpPath = Environment.CurrentDirectory + "\\Tmp\\";
            DirectoryInfo di = new DirectoryInfo(tmpPath);
            if (di.Exists == fal)
            {
                di.Create();
                return;
            }

            foreach (FileInfo fi in di.GetFiles())
            {
                try
                {
                    fi.Delete();
                }
                catch { continue; }
            }
        }
        
        
        private void button2_Click(object sender, EventArgs e)//上一张
        {
            if (fal)
            {
                this.pictureBox1.Image = null;
                if (i == 0)
                {
                    i = j - 1;
                    if (ing[i] != null)
                    {
                        PictureBoxHelper.LoadThumbnailImage((Bitmap)ing[i], pictureBox1);
                    }
                    this.currentFileName = list[i].getFileName();
                    //PictureBoxHelper.LoadThumbnailImage(pictureBox1);
                    label1.Text = i+1+"/"+ j;
                }
                else
                {
                    i = i - 1;
                    if (ing[i] != null)
                    {
                        PictureBoxHelper.LoadThumbnailImage((Bitmap)ing[i], pictureBox1);
                    }
                    this.currentFileName = list[i].getFileName();
                    //PictureBoxHelper.LoadThumbnailImage(pictureBox1);
                    label1.Text = i+1 + "/" + j;
                }
                if (FileChangeEvent != null)
                {
                    FileChangeEvent(currentFileName);
                }
                ShowDontViewBnt();
            }
        }

        private void button1_Click(object sender, EventArgs e)//下一张
        {
            if (fal)
            {
                this.pictureBox1.Image = null;
                if (i + 1 == j)
                {
                    i = 0;
                    if (ing[i] != null)
                    {
                        PictureBoxHelper.LoadThumbnailImage((Bitmap)ing[i], pictureBox1);
                    }
                    this.currentFileName = list[i].getFileName();
                    //PictureBoxHelper.LoadThumbnailImage(pictureBox1);
                    label1.Text = i+1 + "/" + j;
                }
                else
                {
                    i = i + 1;
                    if (ing[i] != null)
                    {
                        PictureBoxHelper.LoadThumbnailImage((Bitmap)ing[i], pictureBox1);
                    }
                    this.currentFileName = list[i].getFileName();
                    //PictureBoxHelper.LoadThumbnailImage(pictureBox1);
                    label1.Text = i + 1 + "/" + j;
                }
                if (FileChangeEvent != null)
                {
                    FileChangeEvent(currentFileName);
                }
                ShowDontViewBnt();
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (ingname.Count == 0)
            {
                MessageUtil.ShowWarning("没有可删除的文件！");
                return;
            }
            if (MessageBox.Show("是否确定要进行删除操作", "警告", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)  //LX 修改
            {
                bool isSuccess = Core.Mes.Client.Comm.Server.FileHelper.Delete(spathName + "/" + ingname[i] + ""); ;
                if (isSuccess)
                {
                    MessageUtil.ShowTips("删除成功！");
                    FlileDown(spathName);
                    if (FileDeleteEvent != null) FileDeleteEvent();
                }
            }
        }

        private void ShowDontViewBnt()
        {
            if (this.pictureBox1.Image == null && ing.Count > 0)
            {
                label2.Visible = true;
                button4.Visible = true;
                label2.Text = "无法浏览文件：" + ingname[i];
            }
            else
            {
                label2.Visible = false;
                button4.Visible = false;
            }
        }

        private void pictureBox1_SizeChanged(object sender, EventArgs e)
        {
            if (this.DesignMode == true) return;
            if (_lbl2X == 0) return;
            label2.Location = new Point((int)((double)pictureBox1.Width * _lbl2X),
                (int)((double)pictureBox1.Height * _lbl2Y));
            button4.Location = new Point(label2.Location.X + 45, label2.Location.Y + 35);
        }

        private void panel1_SizeChanged(object sender, EventArgs e)
        {
            if (this.DesignMode == true) return;
            if (_btn1 == 0) return;
            button1.Location = new Point((int)((double)panel1.Width * _btn1), button1.Location.Y);
            button2.Location = new Point((int)((double)panel1.Width * _btn2), button1.Location.Y);
            button3.Location = new Point((int)((double)panel1.Width * _btn3), button1.Location.Y);
            button5.Location = new Point(button3.Location.X - 103, button3.Location.Y);
        }

        private void button4_Click(object sender, EventArgs e)
        {
            string filePath = Environment.CurrentDirectory + "\\Tmp\\" + ingname[i];
            Process.Start(filePath);
        }

        private void button5_Click(object sender, EventArgs e)
        {
            if (ing.Count == 0)
            {
                MessageUtil.ShowWarning("没有可下载的文件！");
                return;
            }
            SaveFileDialog file = new SaveFileDialog();
            string fileType = list[i].getFileName().Split('.')[list[i].getFileName().Split('.').Length - 1];
            file.Filter = "Document(*." + fileType + ")| *." + fileType;
            file.FileName = list[i].getFileName();
            DialogResult drStat = file.ShowDialog();
            if (drStat == DialogResult.OK)
            {
                FileStream fs = new FileStream(file.FileName, FileMode.Create);
                byte[] Bytes = list[i].getFile();
                fs.Write(Bytes, 0, Bytes.Length);
                fs.Flush();
                fs.Close();
            }
        }
    }
}