/// <summary>
/// This is the event handler for PrintManager.PrintTaskRequested.
/// In order to ensure a good user experience, the system requires that the app handle the PrintTaskRequested event within the time specified by PrintTaskRequestedEventArgs.Request.Deadline.
/// Therefore, we use this handler to only create the print task.
/// The print settings customization can be done when the print document source is requested.
/// </summary>
/// <param name="sender">PrintManager</param>
/// <param name="e">PrintTaskRequestedEventArgs</param>
protected override void PrintTaskRequested(PrintManager sender, PrintTaskRequestedEventArgs e)
{
PrintTask printTask = null;
printTask = e.Request.CreatePrintTask("C# Printing SDK Sample", sourceRequestedArgs =>
{
PrintTaskOptionDetails printDetailedOptions = PrintTaskOptionDetails.GetFromPrintTaskOptions(printTask.Options);
IList <string> displayedOptions = printDetailedOptions.DisplayedOptions;
// Choose the printer options to be shown.
// The order in which the options are appended determines the order in which they appear in the UI
displayedOptions.Clear();
displayedOptions.Add(Windows.Graphics.Printing.StandardPrintTaskOptions.Copies);
displayedOptions.Add(Windows.Graphics.Printing.StandardPrintTaskOptions.Orientation);
displayedOptions.Add(Windows.Graphics.Printing.StandardPrintTaskOptions.ColorMode);
// Create a new list option
PrintCustomItemListOptionDetails pageFormat = printDetailedOptions.CreateItemListOption("PageRange", "Page Range");
pageFormat.AddItem("PrintAll", "Print all");
pageFormat.AddItem("PrintSelection", "Print Selection");
pageFormat.AddItem("PrintRange", "Print Range");
// Add the custom option to the option list
displayedOptions.Add("PageRange");
// Create new edit option
PrintCustomTextOptionDetails pageRangeEdit = printDetailedOptions.CreateTextOption("PageRangeEdit", "Range");
// Register the handler for the option change event
printDetailedOptions.OptionChanged += printDetailedOptions_OptionChanged;
// Register the handler for the PrintTask.Completed event.
// Print Task event handler is invoked when the print job is completed.
printTask.Completed += async(s, args) =>
{
pageRangeEditVisible = false;
selectionMode = false;
pageList.Clear();
// Notify the user when the print operation fails.
if (args.Completion == PrintTaskCompletion.Failed)
{
await scenarioPage.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
LogHelper.Log(LogLevel.Error, "Failed to print.");
});
}
await scenarioPage.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
// Restore first page to its default layout.
// Undo any changes made by a text selection.
ShowContent(null);
});
};
sourceRequestedArgs.SetSource(printDocumentSource);
});
}
/// <summary>
/// This is the event handler for PrintManager option changed.
/// </summary>
/// <param name="sender">PrintTaskOptionDetails</param>
/// <param name="args">PrintTaskOptionChangedEventArgs </param>
private static async void PrintDetailedOptions_OptionChanged(PrintTaskOptionDetails sender, PrintTaskOptionChangedEventArgs args)
{
bool invalidatePreview = false;
string optionId = args.OptionId as string;
if (string.IsNullOrEmpty(optionId))
{
return;
}
if (optionId == "HeaderText")
{
PrintCustomTextOptionDetails headerText = (PrintCustomTextOptionDetails)sender.Options["HeaderText"];
_headerText = headerText.Value.ToString();
invalidatePreview = true;
}
if (optionId == "FooterText")
{
PrintCustomTextOptionDetails footerText = (PrintCustomTextOptionDetails)sender.Options["FooterText"];
_footerText = footerText.Value.ToString();
invalidatePreview = true;
}
if (optionId == "LeftMargin")
{
PrintCustomTextOptionDetails leftMargin = (PrintCustomTextOptionDetails)sender.Options["LeftMargin"];
var leftMarginValueConverterArg = double.TryParse(leftMargin.Value.ToString(), out var leftMarginValue);
if (leftMarginValue > 50 || leftMarginValue < 0 || !leftMarginValueConverterArg)
{
leftMargin.ErrorText = _resourceLoader.GetString("Print_ErrorMsg_ValueOutOfRange");
return;
}
else if (Math.Round(leftMarginValue, 1) != leftMarginValue)
{
leftMargin.ErrorText = _resourceLoader.GetString("Print_ErrorMsg_DecimalOutOfRange");
return;
}
leftMargin.ErrorText = string.Empty;
_applicationContentMarginLeft = (Math.Round(leftMarginValue / 100, 3));
invalidatePreview = true;
}
if (optionId == "TopMargin")
{
PrintCustomTextOptionDetails topMargin = (PrintCustomTextOptionDetails)sender.Options["TopMargin"];
var topMarginValueConverterArg = double.TryParse(topMargin.Value.ToString(), out var topMarginValue);
if (topMarginValue > 50 || topMarginValue < 0 || !topMarginValueConverterArg)
{
topMargin.ErrorText = _resourceLoader.GetString("Print_ErrorMsg_ValueOutOfRange");
return;
}
else if (Math.Round(topMarginValue, 1) != topMarginValue)
{
topMargin.ErrorText = _resourceLoader.GetString("Print_ErrorMsg_DecimalOutOfRange");
return;
}
topMargin.ErrorText = string.Empty;
_applicationContentMarginTop = (Math.Round(topMarginValue / 100, 3));
invalidatePreview = true;
}
if (invalidatePreview)
{
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
_printDocument.InvalidatePreview();
});
}
}
/// <summary>
/// This is the event handler for PrintManager.PrintTaskRequested.
/// </summary>
/// <param name="sender">PrintManager</param>
/// <param name="e">PrintTaskRequestedEventArgs </param>
private static void PrintTaskRequested(PrintManager sender, PrintTaskRequestedEventArgs e)
{
PrintTask printTask = null;
printTask = e.Request.CreatePrintTask("Notepads", sourceRequestedArgs =>
{
var deferral = sourceRequestedArgs.GetDeferral();
PrintTaskOptionDetails printDetailedOptions = PrintTaskOptionDetails.GetFromPrintTaskOptions(printTask.Options);
IList <string> displayedOptions = printTask.Options.DisplayedOptions;
// Choose the printer options to be shown.
// The order in which the options are appended determines the order in which they appear in the UI
displayedOptions.Clear();
displayedOptions.Add(StandardPrintTaskOptions.Orientation);
displayedOptions.Add(StandardPrintTaskOptions.Copies);
displayedOptions.Add(StandardPrintTaskOptions.MediaSize);
displayedOptions.Add(StandardPrintTaskOptions.InputBin);
// Add Margin setting in % options
PrintCustomTextOptionDetails leftMargin = printDetailedOptions.CreateTextOption("LeftMargin", _resourceLoader.GetString("Print_LeftMarginEntry_Title"));
PrintCustomTextOptionDetails topMargin = printDetailedOptions.CreateTextOption("TopMargin", _resourceLoader.GetString("Print_TopMarginEntry_Title"));
leftMargin.Description = topMargin.Description = _resourceLoader.GetString("Print_MarginEntry_Description");
leftMargin.TrySetValue(Math.Round(100 * _applicationContentMarginLeft, 1).ToString());
topMargin.TrySetValue(Math.Round(100 * _applicationContentMarginTop, 1).ToString());
displayedOptions.Add("LeftMargin");
displayedOptions.Add("TopMargin");
// Add Header and Footer text options
PrintCustomTextOptionDetails headerText = printDetailedOptions.CreateTextOption("HeaderText", _resourceLoader.GetString("Print_HeaderEntry_Title"));
PrintCustomTextOptionDetails footerText = printDetailedOptions.CreateTextOption("FooterText", _resourceLoader.GetString("Print_FooterEntry_Title"));
headerText.TrySetValue(_headerText);
footerText.TrySetValue(_footerText);
displayedOptions.Add("HeaderText");
displayedOptions.Add("FooterText");
displayedOptions.Add(StandardPrintTaskOptions.CustomPageRanges);
displayedOptions.Add(StandardPrintTaskOptions.Duplex);
displayedOptions.Add(StandardPrintTaskOptions.Collation);
//displayedOptions.Add(StandardPrintTaskOptions.NUp);
displayedOptions.Add(StandardPrintTaskOptions.MediaType);
displayedOptions.Add(StandardPrintTaskOptions.Bordering);
//displayedOptions.Add(StandardPrintTaskOptions.ColorMode);
displayedOptions.Add(StandardPrintTaskOptions.PrintQuality);
displayedOptions.Add(StandardPrintTaskOptions.HolePunch);
displayedOptions.Add(StandardPrintTaskOptions.Staple);
// Preset the default value of the printer option
printTask.Options.MediaSize = PrintMediaSize.Default;
printDetailedOptions.OptionChanged += PrintDetailedOptions_OptionChanged;
// Print Task event handler is invoked when the print job is completed.
printTask.Completed += async(s, args) =>
{
// Notify the user when the print operation fails.
if (args.Completion == PrintTaskCompletion.Failed)
{
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
NotificationCenter.Instance.PostNotification(_resourceLoader.GetString("Print_NotificationMsg_PrintFailed"), 1500);
});
}
};
sourceRequestedArgs.SetSource(_printDocumentSource);
deferral.Complete();
});
}
