public PrintPreviewController(GtkFormPrintDocument operation)
{
this.operation = operation;
operation.BeginPrint += operation_BeginPrint;
operation.DrawPage += operation_DrawPage;
operation.EndPrint += operation_EndPrint;
}
public void PrintDocument()
{
if (printingDocument)
{
return;
}
try {
printingDocument = true;
exceptionPrinting = null;
if (document != null)
{
var newDocument = new GtkFormPrintDocument(document.FormToPrint)
{
UseFullPage = document.UseFullPage
};
newDocument.DefaultPageSetup = document.DefaultPageSetup.Copy();
newDocument.DefaultPageSetup.Orientation = document.FormToPrint.Landscape
? PageOrientation.Landscape
: PageOrientation.Portrait;
if (document.PrintSettings != null)
{
newDocument.PrintSettings = document.PrintSettings.Copy();
newDocument.PrintSettings.Orientation = newDocument.DefaultPageSetup.Orientation;
}
string printerName = null;
if (document.PrintSettings != null && !string.IsNullOrWhiteSpace(document.PrintSettings.Printer))
{
printerName = document.PrintSettings.Printer;
}
newDocument.SetPrinterSettings(printerName);
ClearPagesCache();
document = newDocument;
sizeIsInvalid = true;
virtualSizeIsInvalid = true;
document.DrawPage += document_DrawPage;
using (new PrintPreviewController(document))
document.Run(PrintOperationAction.Preview, ComponentHelper.TopWindow);
document.DrawPage -= document_DrawPage;
document.PageRows = document.FormToPrint.GetPageRows();
document.PageColumns = document.FormToPrint.GetPageColumns();
StartPage = Math.Min(startPage, TotalPages - 1);
OnPagesCalculated(EventArgs.Empty);
}
QueueDraw();
} catch (GException ex) {
exceptionPrinting = ex;
} catch (AccessViolationException ex) {
exceptionPrinting = ex;
} finally {
printingDocument = false;
}
}