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Add Utils.RunBackground

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This commit is contained in:
Lorenz Stechauner
2023-03-09 23:02:54 +01:00
parent 54ba861b0e
commit 483657911d
4 changed files with 18 additions and 12 deletions
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6
WGneu/App.xaml.cs
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@ -19,13 +19,13 @@ namespace WGneu {
} }
protected override void OnStartup(StartupEventArgs e) { protected override void OnStartup(StartupEventArgs e) {
Task.Run(() => Documents.Html.Init(PrintingReadyChanged)); Utils.RunBackground("HTML Initialization", () => Documents.Html.Init(PrintingReadyChanged));
Task.Run(() => Documents.Pdf.Init(PrintingReadyChanged)); Utils.RunBackground("PDF Initialization", () => Documents.Pdf.Init(PrintingReadyChanged));
base.OnStartup(e); base.OnStartup(e);
} }
protected override void OnExit(ExitEventArgs e) { protected override void OnExit(ExitEventArgs e) {
Task.Run(() => Documents.Pdf.Close()); Utils.RunBackground("PDF Close", () => Documents.Pdf.Close());
base.OnExit(e); base.OnExit(e);
} }

2
WGneu/Documents/Pdf.cs
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@ -39,7 +39,7 @@ namespace WGneu.Documents {
if (Browser == null) throw new InvalidOperationException("The puppeteer engine has not been initialized yet"); if (Browser == null) throw new InvalidOperationException("The puppeteer engine has not been initialized yet");
using var page = await Browser.NewPageAsync(); using var page = await Browser.NewPageAsync();
page.Console += OnConsole; page.Console += OnConsole;
await page.GoToAsync("file://" + htmlPath); await page.GoToAsync($"file://{htmlPath}");
await page.EvaluateFunctionAsync("async () => { await window.PagedPolyfill.preview(); }"); await page.EvaluateFunctionAsync("async () => { await window.PagedPolyfill.preview(); }");
await page.PdfAsync(pdfPath, new() { await page.PdfAsync(pdfPath, new() {
PreferCSSPageSize = true, PreferCSSPageSize = true,

10
WGneu/Utils.cs
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@ -46,6 +46,16 @@ namespace WGneu {
return a.Select(ch => ch - '0').Aggregate((sum, n) => (sum * 10 + n) % b); return a.Select(ch => ch - '0').Aggregate((sum, n) => (sum * 10 + n) % b);
} }
public static void RunBackground(string title, Func<Task> a) {
Task.Run(async () => {
try {
await a();
} catch (Exception e) {
MessageBox.Show(e.ToString(), title, MessageBoxButton.OK, MessageBoxImage.Error);
}
});
}
public sealed class TemporaryFile : IDisposable { public sealed class TemporaryFile : IDisposable {
private int Usages = 0; private int Usages = 0;
public string FilePath { get; private set; } public string FilePath { get; private set; }

12
WGneu/Windows/MainWindow.xaml.cs
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@ -43,14 +43,10 @@ namespace WGneu.Windows {
} }
private void Button4_Click(object sender, EventArgs e) { private void Button4_Click(object sender, EventArgs e) {
Task.Run(async () => { Utils.RunBackground("PDF Generation", async () => {
try { using var letter = new BusinessLetter("Test Dokument", _context.Members.First());
using var letter = new BusinessLetter("Test Dokument", _context.Members.First()); await letter.Generate();
await letter.Generate(); letter.Show();
letter.Show();
} catch (Exception e) {
MessageBox.Show(e.ToString(), "PDF Generation", MessageBoxButton.OK, MessageBoxImage.Error);
}
}); });
} }
} }