using LB_VisionProcesses.BarcodeReaders;
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using System;
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using System.Diagnostics;
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using System.Drawing;
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using System.Windows.Forms;
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namespace LB_SmartVision.Forms.Pages.BarcodeReaderPage
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{
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public partial class BarcodeReaderForm : Form
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{
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BarcodeReaderBase barcodeReader { get; set; }
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PictureBox pictureBox1 { get; set; }
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public BarcodeReaderForm()
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{
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InitializeComponent();
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}
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public BarcodeReaderForm(BarcodeReaderBase reader)
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{
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InitializeComponent();
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// 创建图像显示控件
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pictureBox1 = new PictureBox();
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pictureBox1.Dock = DockStyle.Fill;
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pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;
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uiGroupBoxImage.Controls.Add(pictureBox1);
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if (reader == null)
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return;
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this.barcodeReader = reader;
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this.Text = reader.SN;
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// 添加品牌选项
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foreach (BarcodeReaderBrand brand in Enum.GetValues(typeof(BarcodeReaderBrand)))
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{
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if (brand != BarcodeReaderBrand.Unsupported)
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uiComboBoxBrand.Items.Add(brand.ToString());
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}
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// 设置品牌
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uiComboBoxBrand.Text = reader.Brand.ToString();
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// 加载回调函数
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Subscribe();
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}
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private void BarcodeReaderForm_FormClosing(object sender, FormClosingEventArgs e)
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{
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if (barcodeReader == null)
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return;
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barcodeReader.StopGrabbing();
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Unsubscribe();
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}
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public void Unsubscribe()
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{
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try
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{
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if (barcodeReader == null)
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return;
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// 取消回调函数
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barcodeReader.BarcodeRead -= OnBarcodeRead;
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}
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catch (Exception ex)
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{
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// 记录错误信息
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Debug.WriteLine($"错误: {ex.Message}");
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}
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}
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public void Subscribe()
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{
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try
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{
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if (barcodeReader == null)
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return;
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// 取消回调函数
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barcodeReader.BarcodeRead -= OnBarcodeRead;
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// 加载回调函数
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barcodeReader.BarcodeRead += OnBarcodeRead;
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}
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catch (Exception ex)
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{
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// 记录错误信息
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Debug.WriteLine($"错误: {ex.Message}");
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}
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}
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private void OnBarcodeRead(object sender, BarcodeEventArgs e)
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{
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if (e.Barcodes == null || e.Barcodes.Count == 0)
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return;
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if (this.InvokeRequired)
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{
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this.Invoke(new Action(() =>
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{
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DisplayBarcodeResult(e);
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}));
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}
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else
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{
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DisplayBarcodeResult(e);
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}
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}
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private void DisplayBarcodeResult(BarcodeEventArgs e)
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{
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uiListBoxBarcodes.Items.Clear();
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if (e.BarcodeInfos != null && e.BarcodeInfos.Count > 0)
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{
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foreach (var info in e.BarcodeInfos)
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{
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uiListBoxBarcodes.Items.Add(info.Text);
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}
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}
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if (e.Image != null)
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{
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// 创建图像副本进行绘制
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Bitmap drawImg = new Bitmap(e.Image);
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using (Graphics g = Graphics.FromImage(drawImg))
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{
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g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
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using (Pen pen = new Pen(Color.LimeGreen, 3))
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using (SolidBrush brush = new SolidBrush(Color.LimeGreen))
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using (Font font = new Font("Arial", 16, FontStyle.Bold))
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{
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foreach (var info in e.BarcodeInfos)
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{
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if (info.Points != null && info.Points.Length >= 4)
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{
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// 绘制框线
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g.DrawPolygon(pen, info.Points);
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// 绘制文本
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Point textPos = info.Points[0];
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textPos.Y -= 25;
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g.DrawString(info.Text, font, brush, textPos);
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}
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}
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}
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}
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// 释放旧图像
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var oldImg = pictureBox1.Image;
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pictureBox1.Image = drawImg;
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oldImg?.Dispose();
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}
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uiTextBoxResult.Text = $"读取到{e.BarcodeInfos.Count}个条码";
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}
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private void uiRadioButtonSoftTrigger_CheckedChanged(object sender, EventArgs e)
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{
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uiButtonSoftTrigger.Enabled = uiRadioButtonSoftTrigger.Checked;
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if (barcodeReader == null)
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return;
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barcodeReader.SetTriggerMode(uiRadioButtonSoftTrigger.Checked);
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}
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private void uiButtonStartGrabbing_Click(object sender, EventArgs e)
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{
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if (barcodeReader == null)
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return;
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if (barcodeReader.StartGrabbing())
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{
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uiButtonStartGrabbing.Enabled = false;
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uiButtonStopGrabbing.Enabled = true;
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}
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}
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private void uiButtonStopGrabbing_Click(object sender, EventArgs e)
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{
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if (barcodeReader == null)
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return;
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if (barcodeReader.StopGrabbing())
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{
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uiButtonStartGrabbing.Enabled = true;
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uiButtonStopGrabbing.Enabled = false;
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}
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}
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private void uiButtonSoftTrigger_Click(object sender, EventArgs e)
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{
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if (barcodeReader == null)
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return;
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barcodeReader.SoftTrigger();
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}
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private void uiButtonClear_Click(object sender, EventArgs e)
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{
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uiListBoxBarcodes.Items.Clear();
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uiTextBoxResult.Text = "";
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if (pictureBox1 != null)
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pictureBox1.Image = null;
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}
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}
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}
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