Hi guys I have an instance where I have a logo image as part of some
artwork..
If a user uploads a new logo I have a form field which is larger than the
default logo.
I then use that form field to position the new image.
The problem is I need to set the background colour of that form field to
white so that it covers the old logo in the event that the new image is
smaller than the old logo..
what I have done is:
foreach (var imageField in imageReplacements)
{
fields.SetFieldProperty(imageField.Key,
"bgcolor",
iTextSharp.text.Color.WHITE, null);
fields.RegenerateField(imageField.Key);
PdfContentByte overContent =
stamper.GetOverContent(imageField.Value.PageNumber);
float[] logoArea =
fields.GetFieldPositions(imageField.Key);
if (logoArea != null)
{
iTextSharp.text.Rectangle
logoRect = new
iTextSharp.text.Rectangle(logoArea[1], logoArea[2], logoArea[3],
logoArea[4]);
var logo =
iTextSharp.text.Image.GetInstance(imageField.Value.Location);
if (logo.Width >=
logoRect.Width || logo.Height >= logoRect.Height)
{
logo.ScaleToFit(logoRect.Width, logoRect.Height);
}
logo.Alignment =
iTextSharp.text.Image.ALIGN_LEFT;
logo.SetAbsolutePosition(logoRect.Left, logoArea[2] + (logoRect.Height
- logo.ScaledHeight) / 2);
// left: logoArea[3] -
logo.ScaledWidth + (logoRect.Width -
logo.ScaledWidth) / 2
overContent.AddImage(logo);
}
}
The problem with this is that the background colour of the field is set to
white and the image then doesn't appear.. i remove the SetFieldProperty and
RegenerateField commands and the image replacement works fine..
is there a way to set a stacking order on layers?
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