PrintUI thing.

Wino.Mail.ViewModels/MailRenderingPageViewModel.cs

@@ -55,6 +55,8 @@ public partial class MailRenderingPageViewModel : MailBaseViewModel,
     // Used in 'Save as' and 'Print' functionality.
     public Func<string, Task<bool>> SaveHTMLasPDFFunc { get; set; }
 
+    public Action ShowPrintUIAction { get; set; }
+
     #region Properties
 
     public bool ShouldDisplayDownloadProgress => IsIndetermineProgress || (CurrentDownloadPercentage > 0 && CurrentDownloadPercentage <= 100);
@@ -255,7 +257,7 @@ public partial class MailRenderingPageViewModel : MailBaseViewModel,
         }
         else if (operation == MailOperation.Print)
         {
-            await PrintAsync();
+            ShowPrintUI();
         }
         else if (operation == MailOperation.ViewMessageSource)
         {
@@ -680,37 +682,16 @@ public partial class MailRenderingPageViewModel : MailBaseViewModel,
         }
     }
 
-    private async Task PrintAsync()
+    private void ShowPrintUI()
     {
-        // Printing:
-        // 1. Let WebView2 save the current HTML as PDF to temporary location.
-        // 2. Saving as PDF will divide pages correctly for Win2D CanvasBitmap.
-        // 3. Use Win2D CanvasBitmap as IPrintDocumentSource and WinRT APIs to print the PDF.
-
         try
         {
-            var printFilePath = Path.Combine(_applicationConfiguration.ApplicationTempFolderPath, "print.pdf");
-
-            if (File.Exists(printFilePath)) File.Delete(printFilePath);
-
-            await SaveHTMLasPDFFunc(printFilePath);
-
-            var result = await PrintService.PrintPdfFileAsync(printFilePath, Subject);
-
-            if (result == PrintingResult.Submitted)
-            {
-                _dialogService.InfoBarMessage(Translator.DialogMessage_PrintingSuccessTitle, Translator.DialogMessage_PrintingSuccessMessage, InfoBarMessageType.Success);
-            }
-            else if (result != PrintingResult.Canceled)
-            {
-                var message = string.Format(Translator.DialogMessage_PrintingFailedMessage, result);
-                _dialogService.InfoBarMessage(Translator.DialogMessage_PrintingFailedTitle, message, InfoBarMessageType.Warning);
-            }
+            ShowPrintUIAction?.Invoke();
         }
-        catch (Exception ex)
+        catch (Exception exception)
         {
-            Log.Error(ex, "Failed to print mail.");
-            _dialogService.InfoBarMessage(string.Empty, ex.Message, InfoBarMessageType.Error);
+            Log.Error(exception, "Failed to print mail.");
+            _dialogService.InfoBarMessage(string.Empty, exception.Message, InfoBarMessageType.Error);
         }
     }
 

Wino.Mail.WinUI/Views/MailRenderingPage.xaml.cs

@@ -43,12 +43,29 @@ public sealed partial class MailRenderingPage : MailRenderingPageAbstract,
         Environment.SetEnvironmentVariable("WEBVIEW2_DEFAULT_BACKGROUND_COLOR", "00FFFFFF");
         Environment.SetEnvironmentVariable("WEBVIEW2_ADDITIONAL_BROWSER_ARGUMENTS", "--enable-features=OverlayScrollbar,msOverlayScrollbarWinStyle,msOverlayScrollbarWinStyleAnimation,msWebView2CodeCache");
 
+        ViewModel.ShowPrintUIAction = ShowPrintUI;
+
         ViewModel.SaveHTMLasPDFFunc = new Func<string, Task<bool>>((path) =>
         {
             return Chromium.CoreWebView2.PrintToPdfAsync(path, null).AsTask();
         });
     }
 
+    private async void ShowPrintUI()
+    {
+        if (Chromium.CoreWebView2 == null) return;
+
+        // TODO: Footer still shows wino.mail/html, there is no way to change it currently.
+        // TODO: ShowPrintUI - System doesn't open.
+        // TODO: ShowPrintUI - System doesn't open.
+
+        // Set the document title before printing. This title will be used in the print dialog and header.
+        await Chromium.CoreWebView2.ExecuteScriptAsync($"document.title = '{ViewModel.Subject}';");
+        var settings = Chromium.CoreWebView2.Environment.CreatePrintSettings();
+
+        Chromium.CoreWebView2?.ShowPrintUI(CoreWebView2PrintDialogKind.System);
+    }
+
     public override async void OnEditorThemeChanged()
     {
         base.OnEditorThemeChanged();
@@ -181,7 +198,7 @@ public sealed partial class MailRenderingPage : MailRenderingPageAbstract,
 
         var editorBundlePath = (await ViewModel.NativeAppService.GetEditorBundlePathAsync()).Replace("editor.html", string.Empty);
 
-        Chromium.CoreWebView2.SetVirtualHostNameToFolderMapping("app.reader", editorBundlePath, CoreWebView2HostResourceAccessKind.Allow);
+        Chromium.CoreWebView2.SetVirtualHostNameToFolderMapping("wino.mail", editorBundlePath, CoreWebView2HostResourceAccessKind.Allow);
 
         Chromium.CoreWebView2.DOMContentLoaded -= DOMContentLoaded;
         Chromium.CoreWebView2.DOMContentLoaded += DOMContentLoaded;
@@ -189,7 +206,7 @@ public sealed partial class MailRenderingPage : MailRenderingPageAbstract,
         Chromium.CoreWebView2.NewWindowRequested -= WindowRequested;
         Chromium.CoreWebView2.NewWindowRequested += WindowRequested;
 
-        Chromium.Source = new Uri("https://app.reader/reader.html");
+        Chromium.Source = new Uri("https://wino.mail/reader.html");
     }
 
 
@@ -206,7 +223,7 @@ public sealed partial class MailRenderingPage : MailRenderingPageAbstract,
     private async void WebViewNavigationStarting(WebView2 sender, CoreWebView2NavigationStartingEventArgs args)
     {
         // This is our reader.
-        if (args.Uri == "https://app.reader/reader.html")
+        if (args.Uri == "https://wino.mail/reader.html")
             return;
 
         // Cancel all external navigations since it's navigating to different address inside the WebView2.