/// <summary>
/// Constructor
/// </summary>
/// <param name="printJobConfiguration">Configuration information for the print job</param>
/// <param name="inputStream">Stream containing PDF data</param>
public PdfPrintJob(
PrintJobConfiguration printJobConfiguration,
Stream inputStream)
: base(printJobConfiguration)
{
_inputStream = inputStream ?? throw new PrintJobException("EXCEPTION:PRN007 Null stream", new ArgumentNullException(nameof(inputStream)));
}
public override async Task <bool> PrintFromURLAsync(string url, PrintJobConfiguration printJobConfiguration)
{
bool result = false;
try
{
if (PrintFromURLAsyncSupported)
{
WebViewPrintClientSubclass webViewClientSubclass = new WebViewPrintClientSubclass(url, printJobConfiguration); // TODO - check that this is disposed
webViewClientSubclass.Run();
result = true;
}
}
catch (Java.Lang.Exception jlex)
{
await PrintStatusReporting.ReportExceptionSilentlyAsync(jlex);
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (System.Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
}
#pragma warning restore CA1031 // Do not catch general exception types
return(result);
}
/// <summary>
/// Print the contents of a WebView
/// </summary>
/// <param name="parentPage">The page that the WebView is shown on.</param>
/// <param name="webView">The Xamarin.Forms WebView.</param>
/// <param name="webViewAdditionFunctions">Additional functions</param>
/// <param name="printJobConfiguration">Configuration information for the print job.</param>
/// <returns>true if attempting print, false otherwise.</returns>
public override async Task <bool> PrintWebViewAsync(
Page parentPage,
WebView webView,
IWebViewAdditionalFunctions webViewAdditionFunctions,
PrintJobConfiguration printJobConfiguration)
{
bool result = false;
try
{
// TODO - get rid of use of UIWebView as deprecated by Apple
// See https://forums.xamarin.com/discussion/168620/itms-90338-non-public-api-usage-apple-rejected-my-app-xamarin#latest
if (PrintWebViewAsyncSupported &&
(webViewAdditionFunctions?.NativeControl is UIWebView nativeWebView))
{
using (nativeWebView)
{
result = await PrintUIViewAsync(nativeWebView, printJobConfiguration);
}
}
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
}
#pragma warning restore CA1031 // Do not catch general exception types
return(result);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="printJobConfiguration">Configuration information for the print job</param>
/// <param name="imageData">Byte array containing image data</param>
public ImagePrintJob(
PrintJobConfiguration printJobConfiguration,
byte[] imageData)
: base(printJobConfiguration)
{
_imageData = imageData;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="printJobConfiguration">Configuration information for the print job</param>
/// <param name="imageStream">Stream providing image data</param>
public ImagePrintJob(
PrintJobConfiguration printJobConfiguration,
Stream imageStream)
: base(printJobConfiguration)
{
_imageStream = imageStream;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="printJobConfiguration">Configuration information for the print job</param>
/// <param name="uri">The URI addressing whatever is to be printed</param>
public UriPrintJob(
PrintJobConfiguration printJobConfiguration,
Uri uri)
: base(printJobConfiguration)
{
_uri = uri ?? throw new PrintJobException("EXCEPTION:PRN001 Invalid URL", new ArgumentNullException(nameof(uri)));
}
public override async Task <bool> PrintFromURLAsync(string url, PrintJobConfiguration printJobConfiguration) // was string jobName, bool enablePrintPreview = true)
{
bool result = false;
try
{
if (PrintFromURLAsyncSupported)
{
if (!(url is null))
{
UriPrintJob printJob = new UriPrintJob(printJobConfiguration, new Uri(url));
await printJob.PrintAsync();
result = true;
}
}
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
result = false;
}
#pragma warning restore CA1031 // Do not catch general exception types
// TODO - does this want to be here??? printJob?.UnwireAllEvents();
return(result);
}
public override async Task <bool> PrintImageFromByteArrayAsync(
byte[] content,
PrintJobConfiguration config)
{
bool result = false;
try
{
if (PrintImageFromByteArrayAsyncSupported)
{
ImagePrintJob printJob = new ImagePrintJob(config, content);
await printJob.PrintAsync();
result = true;
}
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
result = false;
}
#pragma warning restore CA1031 // Do not catch general exception types
return(result);
}
public override async Task <bool> PrintWebViewAsync(
Page parentPage,
WebView webView,
IWebViewAdditionalFunctions webViewAdditionFunctions,
PrintJobConfiguration printJobConfiguration)
{
bool result = false;
try
{
if (PrintWebViewAsyncSupported &&
(webViewAdditionFunctions?.NativeControl is Android.Webkit.WebView nativeWebView))
{
PrintServiceAndroidHelper.PrintFromWebView(nativeWebView, printJobConfiguration);
result = true;
}
}
catch (Java.Lang.Exception jlex)
{
await PrintStatusReporting.ReportExceptionSilentlyAsync(jlex);
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (System.Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
}
#pragma warning restore CA1031 // Do not catch general exception types
return(result);
}
public override async Task <bool> PrintPdfFromStreamAsync(
Stream inputStream,
PrintJobConfiguration config)
{
bool result = false;
try
{
if (PrintPdfFromStreamAsyncSupported)
{
PdfPrintJob printJob = new PdfPrintJob(config, inputStream);
await printJob.PrintAsync();
result = true;
}
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
result = false;
}
#pragma warning restore CA1031 // Do not catch general exception types
return(result);
}
public override void OnPageFinished(Android.Webkit.WebView webView, string url)
{
// TODO - investigate whether even using OnPageFinished is enough to always avoid getting a blank page output
PrintServiceAndroidHelper.PrintFromWebView(webView, _printJobConfiguration);
_printJobConfiguration = null;
_webView.Dispose();
_webView = null;
Dispose(); // is this legitimate?
}
private static async Task <UIPrintInteractionController> PopulateCommonPrinterDetailsAsync(
PrintJobConfiguration printJobConfiguration)
{
UIPrintInteractionController printer = UIPrintInteractionController.SharedPrintController;
if (printer is null)
{
await PrintStatusReporting.ReportErrorAsync(
CrossPrinting.PrintingMessages.UnableToPrintAtThisTime);
}
else
{
printer.PrintInfo = UIPrintInfo.PrintInfo;
if (!(printer.PrintInfo is null))
{
if (!(printJobConfiguration is null))
{
switch (printJobConfiguration.DuplexPreference)
{
case PrintJobDuplexConfiguration.LongEdge:
printer.PrintInfo.Duplex = UIPrintInfoDuplex.LongEdge;
break;
case PrintJobDuplexConfiguration.ShortEdge:
printer.PrintInfo.Duplex = UIPrintInfoDuplex.ShortEdge;
break;
case PrintJobDuplexConfiguration.None:
default:
printer.PrintInfo.Duplex = UIPrintInfoDuplex.None;
break;
}
printer.PrintInfo.JobName = printJobConfiguration.JobName;
printer.PrintInfo.Orientation
= printJobConfiguration.PreferPortraitOrientation
? UIPrintInfoOrientation.Portrait
: UIPrintInfoOrientation.Landscape;
printer.PrintInfo.OutputType
= printJobConfiguration.PreferColor
? UIPrintInfoOutputType.General
: UIPrintInfoOutputType.Grayscale;
}
}
printer.ShowsPageRange = true;
}
return(printer);
}
private async Task <bool> PrintImageFromData(NSData data, PrintJobConfiguration printJobConfiguration)
{
bool result = false;
using (data)
{
UIImage uiImage = UIImage.LoadFromData(data);
using (uiImage)
{
result = await PrintObjectAsync(uiImage, printJobConfiguration);
}
}
return(result);
}
private static async Task <bool> PrintObjectAsync(NSObject nsObject, PrintJobConfiguration printJobConfiguration)
{
bool result = false;
UIPrintInteractionController printer = await PopulateCommonPrinterDetailsAsync(printJobConfiguration);
if (!(printer is null))
{
printer.PrintingItem = nsObject;
printer.Present(true, PrintCompletion);
printer.Dispose();
result = true;
}
return(result);
}
private async Task <bool> PrintFileFromStreamAsync(Stream inputStream, PrintJobConfiguration printJobConfiguration)
{
bool result = false;
try
{
string documents = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
string library = Path.Combine(documents, "..", "Library");
string filePath = Path.Combine(library, printJobConfiguration.JobName);
try
{
File.Delete(filePath);
}
#pragma warning disable CA1031 // Do not catch general exception types
catch
{
// no-op
}
#pragma warning restore CA1031 // Do not catch general exception types
using (MemoryStream tempStream = new MemoryStream())
{
inputStream.Position = 0;
inputStream.CopyTo(tempStream);
File.WriteAllBytes(filePath, tempStream.ToArray());
}
NSUrl url = NSUrl.FromFilename(filePath);
using (url)
{
result = await PrintObjectAsync(url, printJobConfiguration);
}
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
}
#pragma warning restore CA1031 // Do not catch general exception types
return(result);
}
public override async Task <bool> PrintImageFromStreamAsync(Stream stream, PrintJobConfiguration printJobConfiguration)
{
try
{
if (PrintImageFromStreamAsyncSupported)
{
return(await PrintImageFromData(
NSData.FromStream(stream),
printJobConfiguration));
}
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
}
#pragma warning restore CA1031 // Do not catch general exception types
return(false);
}
public override async Task <bool> PrintFromURLAsync(string url, PrintJobConfiguration printJobConfiguration)
{
bool result = false;
try
{
if (PrintFromURLAsyncSupported)
{
using (NSUrl nsUrl = NSUrl.FromString(url))
{
result = await PrintObjectAsync(nsUrl, printJobConfiguration);
}
}
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
}
#pragma warning restore CA1031 // Do not catch general exception types
return(result);
}
private async Task <bool> PrintUIViewAsync(UIView uiView, PrintJobConfiguration printJobConfiguration)
{
bool result = false;
UIPrintInteractionController printer = await PopulateCommonPrinterDetailsAsync(printJobConfiguration);
if (!(printer is null))
{
printer.PrintPageRenderer = new UIPrintPageRenderer()
{
HeaderHeight = 40,
FooterHeight = 40
};
printer.PrintPageRenderer.AddPrintFormatter(uiView.ViewPrintFormatter, 0);
UIPrintInteractionResult interactionResult;
if (Device.Idiom == TargetIdiom.Tablet) // TODO - move to ApplicationType
{
interactionResult =
await printer.PresentFromRectInViewAsync(new CGRect(200, 200, 0, 0), uiView, true);
}
else
{
interactionResult = await printer.PresentAsync(true);
}
PrintCompletion(
interactionResult.PrintInteractionController,
interactionResult.Completed,
null);
result = interactionResult.Completed;
printer.Dispose();
}
return(result);
}
public override async Task <bool> PrintWebViewAsync(
Page page,
WebView webView,
IWebViewAdditionalFunctions webViewAdditionFunctions,
PrintJobConfiguration config)
{
bool result = false;
try
{
if (PrintWebViewAsyncSupported)
{
if (!(webViewAdditionFunctions is null))
{
await webViewAdditionFunctions.WaitForViewToBeInNativeLayout(page, 10, 100);
WebViewPrintJob printJob = new WebViewPrintJob(config, webViewAdditionFunctions);
//WebViewPrintJob printJob = new WebViewPrintJob(config, html);
await printJob.PrintAsync();
result = true;
}
}
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
result = false;
}
#pragma warning restore CA1031 // Do not catch general exception types
// TODO - does this want to be here??? printJob?.UnwireAllEvents();
return(result);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="printJobConfiguration">Configuration information for the print job</param>
/// <param name="webViewAdditionalFunctions">Interface that provides access to functionality required by this class. Typically, this interface will be implemented by a subclass of Xamarin.Forms.WebView</param>
public WebViewPrintJob(
PrintJobConfiguration printJobConfiguration,
IWebViewAdditionalFunctions webViewAdditionalFunctions)
: base(printJobConfiguration)
{
if (webViewAdditionalFunctions is null)
{
throw new PrintJobException(
"EXCEPTION:PRN003 Invalid interface to native WebView",
new ArgumentNullException(nameof(webViewAdditionalFunctions)));
}
else if (webViewAdditionalFunctions.NativeControl is null)
{
throw new PrintJobException(
"EXCEPTION:PRN004 Invalid (null) native WebView");
}
else if (!(webViewAdditionalFunctions.NativeControl is Windows.UI.Xaml.Controls.WebView))
{
throw new PrintJobException(
"EXCEPTION:PRN006 Invalid native WebView");
}
_nativeWebView = (Windows.UI.Xaml.Controls.WebView)webViewAdditionalFunctions.NativeControl;
}
public abstract Task <bool> PrintImageFromByteArrayAsync(byte[] content, PrintJobConfiguration config);
public abstract Task <bool> PrintPdfFromStreamAsync(Stream stream, PrintJobConfiguration config);
public abstract Task <bool> PrintWebViewAsync(Page parentPage, WebView webView, IWebViewAdditionalFunctions webViewAdditionFunctions, PrintJobConfiguration config);
#pragma warning restore IDE0052 // Remove unread private members
public WebViewPrintClientSubclass(string url, PrintJobConfiguration printJobConfiguration)
{
_printJobConfiguration = printJobConfiguration;
_url = url;
}
public override async Task <bool> PrintImageFromStreamAsync(Stream inputStream, PrintJobConfiguration printJobConfiguration)
{
bool result = false;
try
{
if (PrintImageFromStreamAsyncSupported)
{
PrintServiceAndroidHelper.PrintImageFromStream(inputStream, printJobConfiguration);
result = true;
}
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (System.Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
}
#pragma warning restore CA1031 // Do not catch general exception types
return(result);
}
public override async Task <bool> PrintImageFromByteArrayAsync(byte[] content, PrintJobConfiguration printJobConfiguration)
{
// based on https://github.com/bushbert/XamarinPCLPrinting/blob/master/PCLPrintExample/PCLPrintExample/PCLPrintExample.Android/Print.cs
bool result = false;
try
{
if (PrintImageFromByteArrayAsyncSupported)
{
//using (
Stream inputStream = new MemoryStream(content); //)
{
PrintServiceAndroidHelper.PrintImageFromStream(inputStream, printJobConfiguration);
result = true;
}
}
}
#pragma warning disable CA1031 // Do not catch general exception types
catch (System.Exception ex)
{
await PrintStatusReporting.ReportExceptionAsync(ex);
}
#pragma warning restore CA1031 // Do not catch general exception types
return(result);
}
public abstract Task <bool> PrintFromURLAsync(string url, PrintJobConfiguration config);
public override async Task <bool> PrintPdfFromStreamAsync(Stream inputStream, PrintJobConfiguration printJobConfiguration) => PrintPdfFromStreamAsyncSupported && await PrintFileFromStreamAsync(inputStream, printJobConfiguration);
/// <summary>
/// Constructor
/// </summary>
/// <param name="printJobConfiguration">Configuration information for the print job</param>
protected BasePrintJob(PrintJobConfiguration printJobConfiguration)
{
_printJobConfiguration = printJobConfiguration;
}
