public Watermark()
{
Image = null;
Scale = new ImageScale(0.2F, ImageScaleDimension.Width);
Margin = new AbsoluteImageMargin();
Alignment = ImageAlignment.BottomRight;
Opacity = 1f;
}
public ImagePosition GetWatermarkPosition(ImageResolution imageResolution, ImageResolution watermarkResolution, AbsoluteImageMargin margin)
{
if (margin != null && imageResolution != null && watermarkResolution != null)
{
var resultPosition = new ImagePosition();
if (Alignment == ImageAlignment.TopLeft)
{
resultPosition.FirstPoint = new PointF(margin.Left, margin.Top);
resultPosition.SecondPoint = new PointF(watermarkResolution.Width + margin.Left, margin.Top);
resultPosition.ThirdPoint = new PointF(margin.Left, watermarkResolution.Height + margin.Top);
}
else if (Alignment == ImageAlignment.TopRight)
{
resultPosition.FirstPoint = new PointF(imageResolution.Width - margin.Right - watermarkResolution.Width, margin.Top);
resultPosition.SecondPoint = new PointF(imageResolution.Width - margin.Right, margin.Top);
resultPosition.ThirdPoint = new PointF(imageResolution.Width - margin.Right - watermarkResolution.Width, watermarkResolution.Height + margin.Top);
}
else if (Alignment == ImageAlignment.BottomLeft)
{
resultPosition.FirstPoint = new PointF(margin.Left, imageResolution.Height - watermarkResolution.Height - margin.Bottom);
resultPosition.SecondPoint = new PointF(watermarkResolution.Width + margin.Left, imageResolution.Height - watermarkResolution.Height - margin.Bottom);
resultPosition.ThirdPoint = new PointF(margin.Left, imageResolution.Height - margin.Bottom);
}
else if (Alignment == ImageAlignment.BottomRight)
{
resultPosition.FirstPoint = new PointF(imageResolution.Width - watermarkResolution.Width - margin.Right, imageResolution.Height - watermarkResolution.Height - margin.Bottom);
resultPosition.SecondPoint = new PointF(imageResolution.Width - margin.Right, imageResolution.Height - watermarkResolution.Height - margin.Bottom);
resultPosition.ThirdPoint = new PointF(imageResolution.Width - watermarkResolution.Width - margin.Right, imageResolution.Height - margin.Bottom);
}
else if (Alignment == ImageAlignment.Top)
{
resultPosition.FirstPoint = new PointF((imageResolution.Width / 2) - (watermarkResolution.Width / 2), margin.Top);
resultPosition.SecondPoint = new PointF((imageResolution.Width / 2) + (watermarkResolution.Width / 2), margin.Top);
resultPosition.ThirdPoint = new PointF((imageResolution.Width / 2) - (watermarkResolution.Width / 2), margin.Top + watermarkResolution.Height);
}
else if (Alignment == ImageAlignment.Bottom)
{
resultPosition.FirstPoint = new PointF((imageResolution.Width / 2) - (watermarkResolution.Width / 2), imageResolution.Height - margin.Bottom - watermarkResolution.Height);
resultPosition.SecondPoint = new PointF((imageResolution.Width / 2) + (watermarkResolution.Width / 2), imageResolution.Height - margin.Bottom - watermarkResolution.Height);
resultPosition.ThirdPoint = new PointF((imageResolution.Width / 2) - (watermarkResolution.Width / 2), imageResolution.Height - margin.Bottom);
}
else if (Alignment == ImageAlignment.Left)
{
resultPosition.FirstPoint = new PointF(margin.Left, (imageResolution.Height / 2) - (watermarkResolution.Height / 2));
resultPosition.SecondPoint = new PointF(margin.Left + watermarkResolution.Width, (imageResolution.Height / 2) - (watermarkResolution.Height / 2));
resultPosition.ThirdPoint = new PointF(margin.Left, (imageResolution.Height / 2) + (watermarkResolution.Height / 2));
}
else if (Alignment == ImageAlignment.Right)
{
resultPosition.FirstPoint = new PointF(imageResolution.Width - margin.Right - watermarkResolution.Width, (imageResolution.Height / 2) - (watermarkResolution.Height / 2));
resultPosition.SecondPoint = new PointF(imageResolution.Width - margin.Right, (imageResolution.Height / 2) - (watermarkResolution.Height / 2));
resultPosition.ThirdPoint = new PointF(imageResolution.Width - margin.Right - watermarkResolution.Width, (imageResolution.Height / 2) + (watermarkResolution.Height / 2));
}
else if (Alignment == ImageAlignment.Center)
{
resultPosition.FirstPoint = new PointF((imageResolution.Width / 2) - (watermarkResolution.Width / 2), (imageResolution.Height / 2) - (watermarkResolution.Height / 2));
resultPosition.SecondPoint = new PointF((imageResolution.Width / 2) + (watermarkResolution.Width / 2), (imageResolution.Height / 2) - (watermarkResolution.Height / 2));
resultPosition.ThirdPoint = new PointF((imageResolution.Width / 2) - (watermarkResolution.Width / 2), (imageResolution.Height / 2) + (watermarkResolution.Height / 2));
}
else
{
throw new NotImplementedException();
}
return(resultPosition);
}
throw new ArgumentException();
}
