tijian_tieying/web/dccdc.Selfhelp/frm_CodeReader.cs

using AForge.Video;
using AForge.Video.DirectShow;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Text;
using System.Windows.Forms;
using ZXing;

namespace dccdc.Selfhelp
{
    public partial class frm_CodeReader : Form
    {
        private int time = 8;
        public frm_CodeReader()
        {
            InitializeComponent();
        }
        public frm_CodeReader(string msg):this()
        {
            label1.Text = msg;
        }
        //private FilterInfoCollection videoDevices;
        private void frm_CodeReader_Load(object sender, EventArgs e)
        {
            //videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
            this.BackColor = Color.FromArgb(71, 216, 233);
            int port = 0;
            this.TopMost = true;
            
            string sport = System.Configuration.ConfigurationManager.AppSettings["commPort"];
            if (!int.TryParse(sport, out port))
            {
                port = 1;
            }
            try
            {
                extend.close_comm();
                extend.open_comm(port);
                extend.send_comm(11);
            }
            catch (Exception ex)
            {
                Status s = new Status(ex.Message);
                s.ShowDialog();
                this.Close();
            }
            start_Click(null, null);
        }

        private VideoCaptureDevice videoSource;
        private void start_Click(object sender, EventArgs e)
        {

            //视频捕获设备
            videoSource = new VideoCaptureDevice(extend.Config.AppSettings.Settings["vid"].Value);
            //捕获到新画面时触发
            videoSource.NewFrame += new NewFrameEventHandler(video_NewFrame);
            //先关一下，下面再打开。避免重复打开的错误
            CloseVideoSource();
            //设置画面大小
            string fbl = extend.Config.AppSettings.Settings["vsize"].Value;
            //videoSource.DesiredFrameSize = new Size(int.Parse(fbl.Split('x')[0]), int.Parse(fbl.Split('y')[0]));
            //启动视频组件
            var videoCapabilities = videoSource.VideoCapabilities;
            int h = int.Parse(fbl.Split('x')[1]);
            int w = int.Parse(fbl.Split('x')[0]);
            //this.Width = w;
            //this.Height = h;
            foreach (var vc in videoCapabilities)
            {
                if (vc.FrameSize.Width == w && vc.FrameSize.Height == h)
                    videoSource.VideoResolution = vc;

            }
            videoSource.Start();

        }

        private void CloseVideoSource()
        {
            if (!(videoSource == null))
                if (videoSource.IsRunning)
                {
                    videoSource.SignalToStop();
                    videoSource = null;
                }

        }
        /// <summary>
        /// 全局变量，保存每一次捕获的图像
        /// </summary>
        Bitmap img = null;
        string code = "";
        public string CodeStr { get { return code; } }
        private void video_NewFrame(object sender, NewFrameEventArgs eventArgs)
        {
            img = (Bitmap)eventArgs.Frame.Clone();
            Bitmap bm = new Bitmap(768, 1024);
            Graphics g = Graphics.FromImage(bm);
            g.FillRectangle(Brushes.White, new Rectangle(0, 0, 768, 1024));
            img.RotateFlip(RotateFlipType.Rotate270FlipXY);
            g.DrawImage(img, new Point((768 - img.Width) / 2, (1024 - img.Height) / 2));

            MemoryStream ms = new MemoryStream();
            img.Save(ms, ImageFormat.Bmp);
            ms.Position = 0;
            var bt = ms.ToArray();
            var imgcode = Image.FromStream(ms);
            LuminanceSource source = new RGBLuminanceSource(bt, img.Width, img.Height);
            BinaryBitmap bitmap = new BinaryBitmap(new ZXing.Common.HybridBinarizer(source));
            Result result = null;
            try
            {
                //开始解码
                result = new MultiFormatReader().decode(bitmap);
            }
            catch (ReaderException re)
            {
                Status s = new Status(re.Message);
                s.ShowDialog();
                s.Close();
                this.DialogResult = DialogResult.Cancel;
            }
            if (result != null)
            {
                if (code == result.Text)
                {
                    DialogResult = DialogResult.OK;
                }
                code = result.Text;
            }
            var imgzz = Image.FromFile(Application.StartupPath + "\\image\\zz.png");
            g.DrawString(time.ToString("00"), new Font("微软雅黑", 36), Brushes.Yellow, new Point(650, 15));
            g.DrawImage(imgzz, new Point(0, 0));
            pictureBox1.Image = bm;
        }

        private void btn_test_Click(object sender, EventArgs e)
        {
            start_Click(sender, e);
        }
        /*
        private void getCamList()
        {
            
             try
             {
                 //AForge.Video.DirectShow.FilterInfoCollection 设备枚举类
                 var videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
                 //清空列表框
                 comboBox1.Items.Clear();
                 if (videoDevices.Count == 0)
                     throw new ApplicationException();
                 //全局变量，标示设备摄像头设备是否存在
                 DeviceExist = true;
                 //加入设备
                 foreach (FilterInfo device in videoDevices)
                 {
                     comboBox1.Items.Add(device.Name);
                 }
                 //默认选择第一项
                 comboBox1.SelectedIndex = 0;
             }
             catch (ApplicationException)
             {
                 DeviceExist = false;
                 comboBox1.Items.Add("未找到可用设备");
             }
             
        }*/

        private void frm_CodeReader_FormClosing(object sender, FormClosingEventArgs e)
        {
            CloseVideoSource();
            
            extend.send_comm(12);
            extend.close_comm();
            
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            time--;
            if (time <= 0)
            {
                this.Close();
            }
        }
    }
}