void CalculateScale(PrintAttributes newAttributes)
{
int dpi = Math.Max(newAttributes.GetResolution().HorizontalDpi, newAttributes.GetResolution().VerticalDpi);
int leftMargin = (int)(dpi * (float)newAttributes.MinMargins.LeftMils / 1000);
int rightMargin = (int)(dpi * (float)newAttributes.MinMargins.RightMils / 1000);
int topMargin = (int)(dpi * (float)newAttributes.MinMargins.TopMils / 1000);
int bottomMargin = (int)(dpi * (float)newAttributes.MinMargins.BottomMils / 1000);
int w = (int)(dpi * (float)newAttributes.GetMediaSize().WidthMils / 1000) - leftMargin - rightMargin;
int h = (int)(dpi * (float)newAttributes.GetMediaSize().HeightMils / 1000) - topMargin - bottomMargin;
scale = Math.Min((float)document.PageContentRect.Width() / w, (float)document.PageContentRect.Height() / h);
}
public override void OnLayout(PrintAttributes oldAttributes, PrintAttributes newAttributes,
CancellationSignal cancellationSignal, LayoutResultCallback callback, Bundle extras)
{
document = new PrintedPdfDocument(context, newAttributes);
CalculateScale(newAttributes);
var printInfo = new PrintDocumentInfo
.Builder("pdf-test.pdf")
.SetContentType(PrintContentType.Document)
.SetPageCount(1)
.Build();
callback.OnLayoutFinished(printInfo, true);
}
public override void OnLayout (PrintAttributes oldAttributes, PrintAttributes newAttributes,
CancellationSignal cancellationSignal, LayoutResultCallback callback, Bundle extras)
{
mWrappedInstance.OnLayout(oldAttributes, newAttributes,
cancellationSignal, callback, extras);
}
public override void OnLayout (PrintAttributes oldAttributes, PrintAttributes newAttributes, CancellationSignal cancellationSignal, Android.Print.PrintDocumentAdapter.LayoutResultCallback callback, Bundle extras)
{
if (cancellationSignal.IsCanceled) {
callback.OnLayoutCancelled ();
return;
}
PrintDocumentInfo pdi = new PrintDocumentInfo.Builder (PrintService.pdfName).SetContentType (Android.Print.PrintContentType.Document).Build ();
callback.OnLayoutFinished (pdi, true);
}