Printing mails. (#471)
* Implemented printing functionality. * Implemented icon for printing. * Remove debug code.
This commit is contained in:
Burak Kaan Köse
@@ -28,6 +28,7 @@ namespace Wino.Core.UWP
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services.AddTransient<INotificationBuilder, NotificationBuilder>();
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services.AddTransient<IClipboardService, ClipboardService>();
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services.AddTransient<IStartupBehaviorService, StartupBehaviorService>();
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services.AddSingleton<IPrintService, PrintService>();
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}
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}
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}
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266
Wino.Core.UWP/Services/PrintService.cs
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266
Wino.Core.UWP/Services/PrintService.cs
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@@ -0,0 +1,266 @@
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using System;
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using System.Collections.Generic;
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using System.Numerics;
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using System.Threading.Tasks;
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using Microsoft.Graphics.Canvas;
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using Microsoft.Graphics.Canvas.Printing;
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using Windows.Data.Pdf;
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using Windows.Graphics.Printing;
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using Windows.Graphics.Printing.OptionDetails;
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using Windows.Storage.Streams;
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using Wino.Core.Domain.Enums;
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using Wino.Core.Domain.Interfaces;
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using Wino.Core.Domain.Models.Printing;
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namespace Wino.Core.UWP.Services
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{
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/// <summary>
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/// Printer service that uses WinRT APIs to print PDF files.
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/// Used modified version of the code here:
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/// https://github.com/microsoft/Win2D-Samples/blob/reunion_master/ExampleGallery/PrintingExample.xaml.cs
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/// HTML file is saved as PDF to temporary location.
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/// Then PDF is loaded as PdfDocument and printed using CanvasBitmap for each page.
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/// </summary>
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public class PrintService : IPrintService
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{
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private TaskCompletionSource<PrintingResult> _taskCompletionSource;
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private CanvasPrintDocument printDocument;
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private PrintTask printTask;
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private PdfDocument pdfDocument;
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private List<CanvasBitmap> bitmaps = new();
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private Vector2 largestBitmap;
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private Vector2 pageSize;
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private Vector2 imagePadding = new Vector2(64, 64);
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private Vector2 cellSize;
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private int bitmapCount;
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private int columns;
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private int rows;
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private int bitmapsPerPage;
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private int pageCount = -1;
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private PrintInformation _currentPrintInformation;
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public async Task<PrintingResult> PrintPdfFileAsync(string pdfFilePath, string printTitle)
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{
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if (_taskCompletionSource != null)
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{
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_taskCompletionSource.TrySetResult(PrintingResult.Abandoned);
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_taskCompletionSource = new TaskCompletionSource<PrintingResult>();
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}
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// Load the PDF file
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var file = await Windows.Storage.StorageFile.GetFileFromPathAsync(pdfFilePath);
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pdfDocument = await PdfDocument.LoadFromFileAsync(file);
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_taskCompletionSource ??= new TaskCompletionSource<PrintingResult>();
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_currentPrintInformation = new PrintInformation(pdfFilePath, printTitle);
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printDocument = new CanvasPrintDocument();
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printDocument.PrintTaskOptionsChanged += OnDocumentTaskOptionsChanged;
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printDocument.Preview += OnDocumentPreview;
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printDocument.Print += OnDocumentPrint;
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var printManager = PrintManager.GetForCurrentView();
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printManager.PrintTaskRequested += PrintingExample_PrintTaskRequested;
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try
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{
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await PrintManager.ShowPrintUIAsync();
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var result = await _taskCompletionSource.Task;
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return result;
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}
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finally
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{
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// Dispose everything.
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UnregisterPrintManager(printManager);
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ClearBitmaps();
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UnregisterTask();
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DisposePDFDocument();
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_taskCompletionSource = null;
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}
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}
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private void DisposePDFDocument()
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{
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if (pdfDocument != null)
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{
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pdfDocument = null;
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}
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}
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private void UnregisterTask()
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{
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if (printTask != null)
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{
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printTask.Completed -= TaskCompleted;
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printTask = null;
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}
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}
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private void UnregisterPrintManager(PrintManager manager)
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{
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manager.PrintTaskRequested -= PrintingExample_PrintTaskRequested;
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}
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private void ClearBitmaps()
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{
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foreach (var bitmap in bitmaps)
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{
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bitmap.Dispose();
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}
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bitmaps.Clear();
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}
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private void PrintingExample_PrintTaskRequested(PrintManager sender, PrintTaskRequestedEventArgs args)
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{
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if (_currentPrintInformation == null) return;
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printTask = args.Request.CreatePrintTask(_currentPrintInformation.PDFTitle, (createPrintTaskArgs) =>
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{
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createPrintTaskArgs.SetSource(printDocument);
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});
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printTask.Completed += TaskCompleted;
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}
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private void TaskCompleted(PrintTask sender, PrintTaskCompletedEventArgs args)
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=> _taskCompletionSource?.TrySetResult((PrintingResult)args.Completion);
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private async void OnDocumentTaskOptionsChanged(CanvasPrintDocument sender, CanvasPrintTaskOptionsChangedEventArgs args)
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{
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var deferral = args.GetDeferral();
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try
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{
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await LoadPDFPageBitmapsAsync(sender);
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var pageDesc = args.PrintTaskOptions.GetPageDescription(1);
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var newPageSize = pageDesc.PageSize.ToVector2();
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if (pageSize == newPageSize && pageCount != -1)
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{
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// We've already figured out the pages and the page size hasn't changed, so there's nothing left for us to do here.
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return;
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}
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pageSize = newPageSize;
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sender.InvalidatePreview();
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// Figure out the bitmap index at the top of the current preview page. We'll request that the preview defaults to showing
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// the page that still has this bitmap on it in the new layout.
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int indexOnCurrentPage = 0;
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if (pageCount != -1)
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{
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indexOnCurrentPage = (int)(args.CurrentPreviewPageNumber - 1) * bitmapsPerPage;
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}
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// Calculate the new layout
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var printablePageSize = pageSize * 0.9f;
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cellSize = largestBitmap + imagePadding;
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var cellsPerPage = printablePageSize / cellSize;
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columns = Math.Max(1, (int)Math.Floor(cellsPerPage.X));
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rows = Math.Max(1, (int)Math.Floor(cellsPerPage.Y));
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bitmapsPerPage = columns * rows;
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// Calculate the page count
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bitmapCount = bitmaps.Count;
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pageCount = (int)Math.Ceiling(bitmapCount / (double)bitmapsPerPage);
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sender.SetPageCount((uint)pageCount);
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// Set the preview page to the one that has the item that was currently displayed in the last preview
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args.NewPreviewPageNumber = (uint)(indexOnCurrentPage / bitmapsPerPage) + 1;
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}
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finally
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{
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deferral.Complete();
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}
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}
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private async Task LoadPDFPageBitmapsAsync(CanvasPrintDocument sender)
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{
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ClearBitmaps();
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bitmaps ??= new List<CanvasBitmap>();
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for (int i = 0; i < pdfDocument.PageCount; i++)
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{
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var page = pdfDocument.GetPage((uint)i);
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var stream = new InMemoryRandomAccessStream();
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await page.RenderToStreamAsync(stream);
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var bitmap = await CanvasBitmap.LoadAsync(sender, stream);
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bitmaps.Add(bitmap);
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}
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largestBitmap = Vector2.Zero;
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foreach (var bitmap in bitmaps)
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{
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largestBitmap.X = Math.Max(largestBitmap.X, (float)bitmap.Size.Width);
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largestBitmap.Y = Math.Max(largestBitmap.Y, (float)bitmap.Size.Height);
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}
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}
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private void OnDocumentPreview(CanvasPrintDocument sender, CanvasPreviewEventArgs args)
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{
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var ds = args.DrawingSession;
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var pageNumber = args.PageNumber;
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DrawPdfPage(sender, ds, pageNumber);
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}
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private void OnDocumentPrint(CanvasPrintDocument sender, CanvasPrintEventArgs args)
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{
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var detailedOptions = PrintTaskOptionDetails.GetFromPrintTaskOptions(args.PrintTaskOptions);
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int pageCountToPrint = (int)pdfDocument.PageCount;
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for (uint i = 1; i <= pageCountToPrint; ++i)
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{
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using var ds = args.CreateDrawingSession();
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var imageableRect = args.PrintTaskOptions.GetPageDescription(i).ImageableRect;
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DrawPdfPage(sender, ds, i);
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}
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}
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private void DrawPdfPage(CanvasPrintDocument sender, CanvasDrawingSession ds, uint pageNumber)
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{
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if (bitmaps?.Count == 0) return;
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var cellAcross = new Vector2(cellSize.X, 0);
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var cellDown = new Vector2(0, cellSize.Y);
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var totalSize = cellAcross * columns + cellDown * rows;
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Vector2 topLeft = (pageSize - totalSize) / 2;
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int bitmapIndex = ((int)pageNumber - 1) * bitmapsPerPage;
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for (int row = 0; row < rows; ++row)
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{
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for (int column = 0; column < columns; ++column)
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{
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var cellTopLeft = topLeft + cellAcross * column + cellDown * row;
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var bitmapInfo = bitmaps[bitmapIndex % bitmaps.Count];
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var bitmapPos = cellTopLeft + (cellSize - bitmapInfo.Size.ToVector2()) / 2;
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ds.DrawImage(bitmapInfo, bitmapPos);
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bitmapIndex++;
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}
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}
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}
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}
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}
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@@ -91,6 +91,7 @@
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<Compile Include="Models\Personalization\SystemAppTheme.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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<Compile Include="Services\PreferencesService.cs" />
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<Compile Include="Services\PrintService.cs" />
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<Compile Include="Services\StartupBehaviorService.cs" />
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<Compile Include="Services\StatePersistenceService.cs" />
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<Compile Include="Services\WinoServerConnectionManager.cs" />
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@@ -120,6 +121,9 @@
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<PackageReference Include="Microsoft.Toolkit.Uwp">
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<Version>7.1.3</Version>
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</PackageReference>
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<PackageReference Include="Win2D.uwp">
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<Version>1.28.0</Version>
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</PackageReference>
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\Wino.Core.Domain\Wino.Core.Domain.csproj">
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@@ -140,6 +144,9 @@
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<Name>Windows Desktop Extensions for the UWP</Name>
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</SDKReference>
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</ItemGroup>
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<ItemGroup>
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<Folder Include="Models\Printing\" />
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</ItemGroup>
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<PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' < '14.0' ">
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<VisualStudioVersion>14.0</VisualStudioVersion>
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</PropertyGroup>
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