public void Print(object sender, EventArgs args)
{
UIPrintInteractionController controller = UIPrintInteractionController.SharedPrintController;
if (controller == null)
{
Console.WriteLine("Couldn't get shared UIPrintInteractionController");
return;
}
controller.CutLengthForPaper = delegate(UIPrintInteractionController printController, UIPrintPaper paper) {
// Create a font with arbitrary size so that you can calculate the approximate
// font points per screen point for the height of the text.
UIFont font = textformatter.Font;
NSString str = new NSString(textField.Text);
UIStringAttributes attributes = new UIStringAttributes();
attributes.Font = font;
CGSize size = str.GetSizeUsingAttributes(attributes);
nfloat approximateFontPointPerScreenPoint = font.PointSize / size.Height;
// Create a new font using a size that will fill the width of the paper
font = SelectFont((float)(paper.PrintableRect.Size.Width * approximateFontPointPerScreenPoint));
// Calculate the height and width of the text with the final font size
attributes.Font = font;
CGSize finalTextSize = str.GetSizeUsingAttributes(attributes);
// Set the UISimpleTextFormatter font to the font with the size calculated
textformatter.Font = font;
// Calculate the margins of the roll. Roll printers may have unprintable areas
// before and after the cut. We must add this to our cut length to ensure the
// printable area has enough room for our text.
nfloat lengthOfMargins = paper.PaperSize.Height - paper.PrintableRect.Size.Height;
// The cut length is the width of the text, plus margins, plus some padding
return(finalTextSize.Width + lengthOfMargins + paper.PrintableRect.Size.Width * PaddingFactor);
};
UIPrintInfo printInfo = UIPrintInfo.PrintInfo;
printInfo.OutputType = UIPrintInfoOutputType.General;
printInfo.Orientation = UIPrintInfoOrientation.Landscape;
printInfo.JobName = textField.Text;
textformatter = new UISimpleTextPrintFormatter(textField.Text)
{
Color = SelectedColor,
Font = SelectFont()
};
controller.PrintInfo = printInfo;
controller.PrintFormatter = textformatter;
if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad)
{
controller.PresentFromRectInView(printButton.Frame, View, true, PrintingComplete);
}
else
{
controller.Present(true, PrintingComplete);
}
}
