Rank: Member
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Joined: 5/27/2005(UTC) Posts: 4
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Hi,
My client requires huge copyright messages to be dynamically displayed across all images posted on their website. How do I overlay text on an image but allowing the image underneath the text to be still visible (i.e. opacity of the text to be reduced) ? I would appreciate if you could show a quick snippet in C#.
Many thanks, Mike
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Rank: Advanced Member
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Joined: 8/3/2003(UTC) Posts: 1,070
Thanks: 1 times Was thanked: 12 time(s) in 12 post(s)
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Hello, You can insert watermarks on your images using the following code snippet: Code:// Input text string, offset of text output and source bitmap.
System.String text = "Aurigma Inc.";
System.Drawing.PointF offset = new System.Drawing.PointF(30.0F, 30.0F);
Aurigma.GraphicsMill.Bitmap bitmap = new Aurigma.GraphicsMill.Bitmap(Aurigma.GraphicsMill.RgbColor.Yellow,
200, 200, Aurigma.GraphicsMill.PixelFormat.Format24bppRgb);
// Convert bitmap to rgb color space.
bitmap.ColorManagement.ConvertToContinuous(Aurigma.GraphicsMill.ColorSpace.Rgb, false, false);
// Create font instance.
System.Drawing.Font font = new System.Drawing.Font("Arial", 14);
System.Drawing.Graphics graphics = bitmap.GetGdiplusGraphics();
try
{
// Create solid brush with opacity.
System.Drawing.SolidBrush brush = new System.Drawing.SolidBrush(Color.FromArgb(0x9F, 0x00, 0x00, 0x00));
// Draw text string.
graphics.DrawString(text, font, brush, offset);
}
finally
{
font.Dispose();
graphics.Dispose();
}
// Save result bitmap.
bitmap.Save(@"c:/1.png");
If you have some questions, please fill free to contact me. Edited by user Sunday, December 23, 2007 6:15:11 PM(UTC)
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Rank: Member
Groups: Guest
Joined: 5/27/2005(UTC) Posts: 4
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Thank you for your suggestion.
Mike
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