public static Image AddCopyrightText(Image originImage, string copyrightText, CopyrightPosition position)
{
return(AddCopyrightText(originImage, copyrightText, Color.FromArgb(153, 0, 0, 0), Color.FromArgb(153, 255, 255, 255), null, position, 0.05, 1, 1, "Arial", FontStyle.Regular,
72f, 72f));
}
private static CopyrightHorizontalPosition GetHorizentalPosition(CopyrightPosition pos)
{
// Mask: 000 111
return((CopyrightHorizontalPosition)((char)pos & (char)0x07));
}
private static CopyrightVerticalPosition GetVerticalPosition(CopyrightPosition pos)
{
// Mask: 111 000
return((CopyrightVerticalPosition)((char)pos & (char)0x38));
}
public static Image AddCopyrightText(Image originImage, string copyrightText, Color shadowColor, Color color, int[] fontSizes,
CopyrightPosition position = CopyrightPosition.BottomCenter,
double marginPercent = 0.05, int shadowOffsetX = 1, int shadowOffsetY = 1, string fontFamily = "Arial", FontStyle fontStyle = FontStyle.Regular,
float xDpi = 72f, float yDpi = 72f)
{
// Try to find the possible max size of the Copyright message
Graphics g = Graphics.FromImage(originImage);
if (fontSizes == null || fontSizes.Length <= 0)
{
fontSizes = new int[] { 16, 14, 12, 10, 8, 6, 4 };
}
int fontSize = 0;
if (fontSizes.Length > 1)
{
fontSize = FindAvailableMaxTextSize(fontSizes, fontFamily, fontStyle, copyrightText, g, originImage.Width, originImage.Height);
}
else
{
fontSize = fontSizes[0];
}
Font font = new Font(fontFamily, fontSize, fontStyle);
SizeF size = new SizeF();
size = g.MeasureString(copyrightText, font);
g.Dispose();
// Compute x and y
float x = 0, y = 0;
StringAlignment alignment = StringAlignment.Center;
switch (GetHorizentalPosition(position))
{
case CopyrightHorizontalPosition.Left:
x = (int)(originImage.Width * marginPercent);
alignment = StringAlignment.Near;
break;
case CopyrightHorizontalPosition.Center:
x = originImage.Width / 2;
alignment = StringAlignment.Center;
break;
case CopyrightHorizontalPosition.Right:
x = (originImage.Width - ((int)(originImage.Width * marginPercent)));
alignment = StringAlignment.Far;
break;
default:
break;
}
switch (GetVerticalPosition(position))
{
case CopyrightVerticalPosition.Top:
y = (int)(originImage.Height * marginPercent);
break;
case CopyrightVerticalPosition.Middle:
y = originImage.Height / 2;
break;
case CopyrightVerticalPosition.Bottom:
y = (originImage.Height - ((int)(originImage.Height * marginPercent))) - (size.Height / 2);
break;
default:
break;
}
return(AddCopyrightText(originImage, copyrightText, shadowColor, color, x, y, fontSizes, shadowOffsetX, shadowOffsetY, fontFamily, fontStyle, alignment, xDpi, yDpi));
}