/// <summary>
/// Draw the prepared box to a PDF page
/// </summary>
private Result <Nothing> RenderBox(XFont baseFont, KeyValuePair <string, DocumentBox> boxDef, double fx, double fy, XGraphics gfx, DocumentPage pageToRender, int pageIndex, int pageTotal)
{
var box = boxDef.Value !;
var font = (box.Definition.BoxFontSize != null) ? GetFont(box.Definition.BoxFontSize.Value) : baseFont;
// boxes are defined in terms of the background image pixels or existing PDF page, so we need to convert
var boxWidth = box.Definition.Width * fx;
var boxHeight = box.Definition.Height * fy;
var space = new XRect(box.Definition.Left * fx, box.Definition.Top * fy, boxWidth, boxHeight);
// Handle the special case of embedding an image
if (box.BoxType == DocumentBoxType.EmbedJpegImage)
{
if (string.IsNullOrWhiteSpace(box.RenderContent !))
{
return(Result.Success()); // empty data is considered OK
}
try
{
_loadingTimer.Start();
var jpegStream = _files.LoadUrl(box.RenderContent);
if (jpegStream is null)
{
return(Result.Success()); // Embedded images are always considered optional
}
var img = XImage.FromStream(jpegStream);
gfx.DrawImage(img, space);
}
catch (Exception ex)
{
Console.WriteLine(ex);
// Nothing. Embedded images are always considered optional
}
finally
{
_loadingTimer.Stop();
}
return(Result.Success());
}
// Read data, or pick a special type
var str = box.BoxType switch
{
DocumentBoxType.Normal => box.RenderContent,
// For the special values, we might want to re-apply the display format
DocumentBoxType.PageGenerationDate => TryApplyDisplayFormat(box, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")),
DocumentBoxType.CurrentPageNumber => TryApplyDisplayFormat(box, (pageIndex + 1).ToString()),
DocumentBoxType.TotalPageCount => TryApplyDisplayFormat(box, pageTotal.ToString()),
DocumentBoxType.RepeatingPageNumber => TryApplyDisplayFormat(box, (pageToRender.RepeatIndex + 1).ToString()),
DocumentBoxType.RepeatingPageTotalCount => TryApplyDisplayFormat(box, pageToRender.RepeatCount.ToString()),
_ => box.RenderContent
};
if (str == null)
{
return(Result.Success()); // empty data is considered OK
}
var align = MapAlignments(box.Definition);
RenderTextInBox(font, gfx, box.Definition, fx, fy, str, space, align);
return(Result.Success());
}