c7a9324635
- 新增打印终端、配对码、打印任务相关表结构与接口\n- 增加后台打印终端/任务管理页和资产标签远程打印入口\n- 引入 .NET 8 Windows 打印助手源码及下载清单配置
366 lines
12 KiB
C#
366 lines
12 KiB
C#
using System.Drawing.Drawing2D;
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using System.Drawing.Printing;
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using System.Drawing.Text;
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using QRCoder;
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namespace FixedAssetPrintAgent;
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internal sealed class LabelPrintService
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{
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private const string CompanyName = "常州简尚家具有限公司";
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private const int CanvasWidth = 480;
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private const int CanvasHeight = 320;
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private const int PaperWidthHundredthsOfInch = 236;
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private const int PaperHeightHundredthsOfInch = 157;
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public List<PrinterInfo> ListPrinters()
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{
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var defaultPrinter = string.Empty;
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try
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{
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var settings = new PrinterSettings();
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defaultPrinter = settings.PrinterName;
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}
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catch
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{
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defaultPrinter = string.Empty;
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}
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return PrinterSettings.InstalledPrinters
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.Cast<string>()
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.Select(name => new PrinterInfo
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{
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Name = name,
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IsDefault = string.Equals(name, defaultPrinter, StringComparison.OrdinalIgnoreCase),
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IsAvailable = true
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})
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.OrderByDescending(item => item.IsDefault)
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.ThenBy(item => item.Name, StringComparer.OrdinalIgnoreCase)
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.ToList();
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}
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public Task<int> PrintAssetLabelsAsync(string printerName, IReadOnlyList<AssetLabelItem> items)
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{
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return Task.Run(() =>
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{
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var pages = items.Select(RenderAssetLabel).ToList();
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try
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{
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PrintBitmaps(printerName, pages, "固定资产标签打印");
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return pages.Count;
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}
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finally
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{
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foreach (var page in pages)
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{
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page.Dispose();
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}
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}
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});
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}
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public Task PrintTestLabelAsync(string printerName)
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{
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return Task.Run(() =>
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{
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using var bitmap = RenderAssetLabel(new AssetLabelItem
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{
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EquipmentCode = "TEST-60X40",
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EquipmentName = "测试标签",
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EquipmentType = "测试标签",
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PurchaseDate = DateTimeOffset.Now.ToString("yyyy-MM-dd"),
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Department = new DepartmentInfo
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{
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Name = $"测试打印 · {printerName}"
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}
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});
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PrintBitmaps(printerName, [bitmap], "固定资产测试标签");
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});
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}
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private static Bitmap RenderAssetLabel(AssetLabelItem item)
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{
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var bitmap = new Bitmap(CanvasWidth, CanvasHeight);
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bitmap.SetResolution(203, 203);
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using var graphics = Graphics.FromImage(bitmap);
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graphics.Clear(Color.White);
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graphics.SmoothingMode = SmoothingMode.HighQuality;
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graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
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graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
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graphics.TextRenderingHint = TextRenderingHint.SingleBitPerPixelGridFit;
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using var outerPen = new Pen(Color.Black, 4);
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graphics.DrawRectangle(outerPen, 2, 2, CanvasWidth - 4, CanvasHeight - 4);
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DrawHeader(graphics);
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DrawQrSection(graphics, item);
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DrawInfoSection(graphics, item);
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return bitmap;
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}
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private static void DrawHeader(Graphics graphics)
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{
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var headerRect = new Rectangle(0, 0, CanvasWidth, 54);
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using var fillBrush = new SolidBrush(Color.Black);
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graphics.FillRectangle(fillBrush, headerRect);
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using var companyFont = new Font("Microsoft YaHei", 22, FontStyle.Bold, GraphicsUnit.Pixel);
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using var whiteBrush = new SolidBrush(Color.White);
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using var companyFormat = new StringFormat
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{
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Alignment = StringAlignment.Near,
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LineAlignment = StringAlignment.Center,
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Trimming = StringTrimming.EllipsisCharacter,
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FormatFlags = StringFormatFlags.NoWrap
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};
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graphics.DrawString(CompanyName, companyFont, whiteBrush, new RectangleF(18, 0, 350, 54), companyFormat);
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graphics.FillRectangle(whiteBrush, new Rectangle(414, 16, 18, 18));
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graphics.FillRectangle(whiteBrush, new Rectangle(440, 16, 5, 18));
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}
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private static void DrawQrSection(Graphics graphics, AssetLabelItem item)
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{
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var panelRect = new Rectangle(14, 66, 184, 184);
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using var framePen = new Pen(Color.Black, 2);
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graphics.DrawRectangle(framePen, panelRect);
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var innerRect = Rectangle.Inflate(panelRect, -10, -10);
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graphics.DrawRectangle(framePen, innerRect);
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using var qrBitmap = BuildQrBitmap(item.EquipmentCode);
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var qrRect = Rectangle.Inflate(innerRect, -10, -10);
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graphics.DrawImage(qrBitmap, qrRect);
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}
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private static void DrawInfoSection(Graphics graphics, AssetLabelItem item)
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{
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var startX = 212;
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var contentWidth = 252;
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var typeText = NormalizeText(item.EquipmentType, "未分类资产");
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var codeLines = SplitCodeForDisplay(item.EquipmentCode);
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var purchaseDate = FormatLabelDate(item.PurchaseDate);
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var organization = NormalizeText(item.Department?.Name, "未分配组织");
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using var blackBrush = new SolidBrush(Color.Black);
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using var whiteBrush = new SolidBrush(Color.White);
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using var typeFont = new Font("Bahnschrift", 18, FontStyle.Bold, GraphicsUnit.Pixel);
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using var codeFont = new Font("Bahnschrift", 34, FontStyle.Bold, GraphicsUnit.Pixel);
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using var captionFont = new Font("Bahnschrift", 13, FontStyle.Bold, GraphicsUnit.Pixel);
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using var valueFont = new Font("Microsoft YaHei", 18, FontStyle.Bold, GraphicsUnit.Pixel);
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using var orgFont = new Font("Microsoft YaHei", 17, FontStyle.Bold, GraphicsUnit.Pixel);
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using var noWrapFormat = new StringFormat
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{
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Alignment = StringAlignment.Near,
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LineAlignment = StringAlignment.Center,
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Trimming = StringTrimming.EllipsisCharacter,
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FormatFlags = StringFormatFlags.NoWrap
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};
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var typeWidth = Math.Min(contentWidth, Math.Max(92, (int)Math.Ceiling(graphics.MeasureString(typeText, typeFont).Width) + 24));
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var typeRect = new Rectangle(startX, 70, typeWidth, 34);
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graphics.FillRectangle(blackBrush, typeRect);
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graphics.DrawString(typeText, typeFont, whiteBrush, typeRect, noWrapFormat);
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var codeY = 114;
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foreach (var line in codeLines.Take(2))
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{
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graphics.DrawString(line, codeFont, blackBrush, new RectangleF(startX, codeY, contentWidth, 38), noWrapFormat);
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codeY += 34;
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}
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graphics.FillRectangle(blackBrush, new Rectangle(startX, 184, contentWidth - 4, 3));
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DrawCaptionWithValue(
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graphics,
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startX,
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198,
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"采购日期",
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string.IsNullOrWhiteSpace(purchaseDate) ? "-" : purchaseDate,
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captionFont,
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valueFont);
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DrawCaptionWithMultilineValue(
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graphics,
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startX,
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242,
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"所属组织",
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organization,
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captionFont,
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orgFont,
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contentWidth,
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44);
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graphics.FillRectangle(blackBrush, new Rectangle(startX, 296, 180, 3));
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graphics.FillRectangle(blackBrush, new Rectangle(startX + 188, 287, 26, 12));
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}
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private static void DrawCaptionWithValue(
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Graphics graphics,
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int x,
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int y,
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string caption,
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string value,
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Font captionFont,
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Font valueFont)
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{
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using var blackBrush = new SolidBrush(Color.Black);
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using var whiteBrush = new SolidBrush(Color.White);
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using var captionFormat = new StringFormat
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{
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Alignment = StringAlignment.Center,
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LineAlignment = StringAlignment.Center,
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FormatFlags = StringFormatFlags.NoWrap
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};
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using var valueFormat = new StringFormat
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{
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Alignment = StringAlignment.Near,
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LineAlignment = StringAlignment.Center,
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Trimming = StringTrimming.EllipsisCharacter,
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FormatFlags = StringFormatFlags.NoWrap
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};
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var captionRect = new Rectangle(x, y, 82, 24);
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graphics.FillRectangle(blackBrush, captionRect);
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graphics.DrawString(caption, captionFont, whiteBrush, captionRect, captionFormat);
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graphics.DrawString(value, valueFont, blackBrush, new RectangleF(x, y + 24, 210, 28), valueFormat);
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}
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private static void DrawCaptionWithMultilineValue(
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Graphics graphics,
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int x,
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int y,
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string caption,
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string value,
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Font captionFont,
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Font valueFont,
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int maxWidth,
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int maxHeight)
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{
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using var blackBrush = new SolidBrush(Color.Black);
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using var whiteBrush = new SolidBrush(Color.White);
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using var captionFormat = new StringFormat
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{
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Alignment = StringAlignment.Center,
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LineAlignment = StringAlignment.Center,
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FormatFlags = StringFormatFlags.NoWrap
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};
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using var valueFormat = new StringFormat
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{
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Alignment = StringAlignment.Near,
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LineAlignment = StringAlignment.Near,
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Trimming = StringTrimming.EllipsisCharacter
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};
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var captionRect = new Rectangle(x, y, 82, 24);
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graphics.FillRectangle(blackBrush, captionRect);
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graphics.DrawString(caption, captionFont, whiteBrush, captionRect, captionFormat);
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graphics.DrawString(value, valueFont, blackBrush, new RectangleF(x, y + 24, maxWidth, maxHeight), valueFormat);
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}
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private static Bitmap BuildQrBitmap(string text)
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{
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using var generator = new QRCodeGenerator();
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using var data = generator.CreateQrCode(NormalizeText(text, "UNKNOWN"), QRCodeGenerator.ECCLevel.Q);
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using var qrCode = new QRCode(data);
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return qrCode.GetGraphic(20, Color.Black, Color.White, true);
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}
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private static void PrintBitmaps(string printerName, IReadOnlyList<Bitmap> pages, string documentName)
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{
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if (string.IsNullOrWhiteSpace(printerName))
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{
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throw new InvalidOperationException("尚未选择标签打印机，请先在助手里保存打印机。");
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}
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using var document = new PrintDocument();
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document.DocumentName = documentName;
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document.PrinterSettings.PrinterName = printerName;
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if (!document.PrinterSettings.IsValid)
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{
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throw new InvalidOperationException($"找不到打印机：{printerName}");
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}
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document.DefaultPageSettings.Margins = new Margins(0, 0, 0, 0);
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document.DefaultPageSettings.PaperSize = new PaperSize("AssetLabel60x40", PaperWidthHundredthsOfInch, PaperHeightHundredthsOfInch);
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document.DefaultPageSettings.Landscape = false;
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document.OriginAtMargins = false;
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document.PrintController = new StandardPrintController();
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var pageIndex = 0;
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document.PrintPage += (_, eventArgs) =>
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{
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var page = pages[pageIndex];
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var graphics = eventArgs.Graphics;
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if (graphics is null)
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{
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throw new InvalidOperationException("当前打印驱动没有返回可用的绘图上下文。");
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}
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graphics.PageUnit = GraphicsUnit.Display;
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graphics.Clear(Color.White);
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graphics.DrawImage(page, eventArgs.PageBounds);
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pageIndex += 1;
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eventArgs.HasMorePages = pageIndex < pages.Count;
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};
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document.Print();
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}
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private static string NormalizeText(string? value, string fallback)
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{
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var normalized = string.IsNullOrWhiteSpace(value)
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? string.Empty
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: string.Join(" ", value.Split(['\r', '\n', '\t', ' '], StringSplitOptions.RemoveEmptyEntries));
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return string.IsNullOrWhiteSpace(normalized) ? fallback : normalized;
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}
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private static string FormatLabelDate(string? value)
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{
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if (string.IsNullOrWhiteSpace(value))
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{
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return string.Empty;
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}
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var normalized = value.Trim().Replace('/', '-');
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return normalized.Length >= 10 ? normalized[..10] : normalized;
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}
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private static List<string> SplitCodeForDisplay(string? value)
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{
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var normalized = NormalizeText(value, "-");
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if (normalized.Length <= 14)
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{
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return [normalized];
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}
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var separatorIndexes = normalized
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.Select((character, index) => (character, index))
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.Where(item => item.character is '-' or '/')
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.Select(item => item.index)
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.ToList();
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if (separatorIndexes.Count > 0)
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{
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var middleIndex = normalized.Length / 2.0;
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var bestIndex = separatorIndexes
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.OrderBy(index => Math.Abs(index - middleIndex))
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.First();
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var first = normalized[..(bestIndex + 1)].Trim();
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var second = normalized[(bestIndex + 1)..].Trim();
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if (!string.IsNullOrWhiteSpace(first) && !string.IsNullOrWhiteSpace(second))
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{
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return [first, second];
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}
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}
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var midpoint = (int)Math.Ceiling(normalized.Length / 2.0);
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return [normalized[..midpoint], normalized[midpoint..]];
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}
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}
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