protected override void OnDrawPage(PrintContext context, int page_nr)
{
Context cairoContext;
if (previewSurface != null)
{
var file = System.IO.Path.GetTempFileName();
var target = new SvgSurface(file,
formArea.Width,
formArea.Height);
cairoContext = new Context(target);
pageFiles.Add(file);
}
else
{
cairoContext = context.CairoContext;
}
pageContexts.Add(cairoContext);
using (var dp = new DrawingProviderCairo(cairoContext, context.CreatePangoLayout())) {
dp.DrawingScaleX = drawingScaleX;
dp.DrawingScaleY = drawingScaleY;
formToPrint.DrawingProvider = dp;
formToPrint.Draw(page_nr, new PointD());
}
}
protected override void OnBeginPrint(PrintContext context)
{
cancelled = false;
Cleanup();
if (context == null)
{
throw new NullReferenceException("context is null");
}
if (context.PageSetup == null)
{
throw new NullReferenceException("context.PageSetup is null");
}
if (formToPrint == null)
{
throw new NullReferenceException("formToPrint is null");
}
if (formToPrint.PageMargins == null)
{
throw new NullReferenceException("formToPrint.PageMargins is null");
}
using (var dp = new DrawingProviderCairo(context.CairoContext, context.CreatePangoLayout())) {
drawingScaleX = (float)(context.Width / (context.PageSetup.GetPageWidth(Unit.Pixel) * SD_SCALE));
drawingScaleY = (float)(context.Height / (context.PageSetup.GetPageHeight(Unit.Pixel) * SD_SCALE));
drawingScaleIsValid = true;
dp.DrawingScaleX = drawingScaleX;
dp.DrawingScaleY = drawingScaleY;
formToPrint.DrawingProvider = dp;
if (formToPrint.PageMargins.Top == int.MaxValue)
{
formToPrint.PageMargins.Top = UseFullPage ? 0 : (int)Math.Round(context.PageSetup.GetTopMargin(Unit.Pixel) * SD_SCALE);
formToPrint.PageMargins.Bottom = UseFullPage ? 0 : (int)Math.Round(context.PageSetup.GetBottomMargin(Unit.Pixel) * SD_SCALE);
formToPrint.PageMargins.Left = UseFullPage ? 0 : (int)Math.Round(context.PageSetup.GetLeftMargin(Unit.Pixel) * SD_SCALE);
formToPrint.PageMargins.Right = UseFullPage ? 0 : (int)Math.Round(context.PageSetup.GetRightMargin(Unit.Pixel) * SD_SCALE);
}
if (formToPrint.PageWidth <= 0)
{
formToPrint.PageWidth = pageWidth != null ?
pageWidth.Value :
(int)Math.Round(context.PageSetup.GetPageWidth(Unit.Pixel) * SD_SCALE);
}
if (formToPrint.PageHeight <= 0)
{
formToPrint.PageHeight = (int)Math.Round(context.PageSetup.GetPageHeight(Unit.Pixel) * SD_SCALE);
}
formArea.X = (int)(formToPrint.PageMargins.Left * drawingScaleX);
formArea.Y = (int)(formToPrint.PageMargins.Top * drawingScaleY);
formArea.Width = (int)(formToPrint.PageWidth * drawingScaleX);
formArea.Height = (int)(formToPrint.PageHeight * drawingScaleY);
paperWidth = formArea.Width + (int)((formToPrint.PageMargins.Left + formToPrint.PageMargins.Right) * drawingScaleX);
paperHeight = formArea.Height + (int)((formToPrint.PageMargins.Top + formToPrint.PageMargins.Bottom) * drawingScaleY);
ErrorHandling.LogError(string.Format("OnBeginPrint Paper: {0}x{1}, Form Area: {2}x{3}, Form Size: {4}x{5}, Orientation: {6}",
paperWidth,
paperHeight,
formArea.Width,
formArea.Height,
formToPrint.PageWidth,
formToPrint.PageHeight,
context.PageSetup.Orientation), ErrorSeverity.Information);
totalPages = formToPrint.GetTotalPages();
pageColumns = formToPrint.GetPageColumns();
pageRows = formToPrint.GetPageRows();
NPages = totalPages;
formToPrint.DrawingProvider = null;
}
base.OnBeginPrint(context);
}