[#15] MailWindow: Add feature to print

Elwig/Documents/Document.cs

@@ -16,6 +16,8 @@ namespace Elwig.Documents {
         protected TempFile? _pdfFile = null;
         protected string? _pdfPath;
         protected string? PdfPath => _pdfPath ?? _pdfFile?.FilePath;
+        public int? TotalPages { get; private set; }
+        public int? Pages => TotalPages / (DoubleSided ? 2 : 1);
 
         public bool ShowFoldMarks = App.Config.Debug;
         public bool DoubleSided = false;
@@ -114,7 +116,8 @@ namespace Elwig.Documents {
                     progress?.Report(GenerationProportion * 100 * i / n);
                 }
                 progress?.Report(GenerationProportion * 100);
-                await Pdf.Convert(tmpFiles, pdf.FileName, DoubleSided, new Progress<double>(v => progress?.Report(GenerationProportion * 100 + v * (1 - GenerationProportion))));
+                var pages = await Pdf.Convert(tmpFiles, pdf.FileName, DoubleSided, new Progress<double>(v => progress?.Report(GenerationProportion * 100 + v * (1 - GenerationProportion))));
+                TotalPages = pages.Pages;
                 foreach (var tmp in tmpHtmls) {
                     tmp.Dispose();
                 }
@@ -124,7 +127,8 @@ namespace Elwig.Documents {
                 using (var tmpHtml = new TempFile("html")) {
                     await File.WriteAllTextAsync(tmpHtml.FilePath, await Render(), Utils.UTF8);
                     progress?.Report(50.0);
-                    await Pdf.Convert(tmpHtml.FilePath, pdf.FilePath, DoubleSided);
+                    var pages = await Pdf.Convert(tmpHtml.FilePath, pdf.FilePath, DoubleSided);
+                    TotalPages = pages.Pages;
                 }
                 _pdfFile = pdf;
             }

Elwig/Helpers/Printing/Pdf.cs

@@ -49,11 +49,11 @@ namespace Elwig.Helpers.Printing {
             return Task.CompletedTask;
         }
 
-        public static async Task<IEnumerable<int>> Convert(string htmlPath, string pdfPath, bool doubleSided = false, IProgress<double>? progress = null) {
+        public static async Task<(int Pages, IEnumerable<int> PerDoc)> Convert(string htmlPath, string pdfPath, bool doubleSided = false, IProgress<double>? progress = null) {
             return await Convert([htmlPath], pdfPath, doubleSided, progress);
         }
 
-        public static async Task<IEnumerable<int>> Convert(IEnumerable<string> htmlPath, string pdfPath, bool doubleSided = false, IProgress<double>? progress = null) {
+        public static async Task<(int Pages, IEnumerable<int> PerDoc)> Convert(IEnumerable<string> htmlPath, string pdfPath, bool doubleSided = false, IProgress<double>? progress = null) {
             if (WinziPrintProc == null) throw new InvalidOperationException("The WinziPrint process has not been initialized yet");
             progress?.Report(0.0);
             using var client = new TcpClient("127.0.0.1", 30983);
@@ -71,8 +71,8 @@ namespace Elwig.Helpers.Printing {
                     var parts = line[9..].Trim().Split('/').Select(int.Parse).ToArray();
                     progress?.Report(100.0 * parts[0] / parts[1]);
                 } else if (line.StartsWith("success:")) {
-                    var m = Regex.Match(line, @"\(([0-9, ]+)\)");
+                    var m = Regex.Match(line, @"([0-9]+) pages \(([0-9, ]+)\)");
-                    return m.Groups[1].Value.Split(", ").Select(int.Parse).ToList();
+                    return (int.Parse(m.Groups[1].Value), m.Groups[2].Value.Split(", ").Select(int.Parse).ToList());
                 }
             }
         }

Elwig/Windows/MailWindow.xaml

@@ -249,9 +249,11 @@
                             Grid.Row="0" Grid.Column="2" Grid.ColumnSpan="3" FontSize="14"
                             Click="PreviewButton_Click"/>
                     <Button x:Name="PrintButton" Content="Drucken" IsEnabled="False"
-                            Grid.Row="2" Grid.Column="2" FontSize="14"/>
+                            Grid.Row="2" Grid.Column="2" FontSize="14"
+                            Click="PrintButton_Click"/>
                     <Button x:Name="EmailButton" Content="E-Mails verschicken" IsEnabled="False"
-                            Grid.Row="2" Grid.Column="4" FontSize="14"/>
+                            Grid.Row="2" Grid.Column="4" FontSize="14"
+                            Click="EmailButton_Click"/>
                 </Grid>
 
                 <Button x:Name="BackButton" Content="Zurück" Grid.Row="1"

Elwig/Windows/MailWindow.xaml.cs

@@ -543,7 +543,7 @@ namespace Elwig.Windows {
             GenerateButton.IsEnabled = true;
             Mouse.OverrideCursor = null;
             PreviewButton.IsEnabled = true;
-            //PrintButton.IsEnabled = true;
+            PrintButton.IsEnabled = true;
             //EmailButton.IsEnabled = true;
         }
 
@@ -571,6 +571,24 @@ namespace Elwig.Windows {
             }
         }
 
+        private async void PrintButton_Click(object sender, RoutedEventArgs evt) {
+            if (PrintDocument == null) return;
+            var res = MessageBox.Show($"Sollen {PrintDocument.Pages} Blätter ({PrintDocument.TotalPages} Seiten) gedruckt werden?\n" +
+                $"Sind die \"Duplex-Einstellungen\" des Standarddruckers entsprechend eingestellt (doppelseitig bzw. einseitig)?",
+                "Rundschreiben drucken", MessageBoxButton.YesNo, MessageBoxImage.Question, MessageBoxResult.No);
+            if (res == MessageBoxResult.Yes) {
+                if (App.Config.Debug) {
+                    PrintDocument.Show();
+                } else {
+                    await PrintDocument.Print();
+                }
+            }
+        }
+
+        private void EmailButton_Click(object sender, RoutedEventArgs evt) {
+            // TODO
+        }
+
         public void AddDeliveryConfirmation() {
             AvaiableDocumentsList.SelectedIndex = 1;
             if (AvaiableDocumentsList.SelectedItem is not string s || SelectedDocs.Any(d => d.Type == DocType.DeliveryConfirmation))