watermark an image

Question

How to watermark an image by adding label on drag and drop at design and save the image atlast..... Any idea guys. Pl Help me soon

Kip Hackman · Answer

You can use LEADTOOLS Document SDK technology in your application. https://www.leadtools.com/sdk/products/document You can leverage the AnnBatesStampComposer class, to add a watermark, then use the AnnRenderingEngine to burn the watermark to the image. Here is some sample code: using (RasterCodecs _codecs = new RasterCodecs()) using (RasterImage _image = _codecs.Load(@ "C:\LEADTOOLS21\Resources\Images\cannon.jpg" )) { //Set the rendering engine AnnBatesStampComposer.RenderingEngine = new AnnWinFormsRenderingEngine(); //Create AnnBatesStampComposer instance and add the created Bates stamp to it AnnBatesStampComposer batesStampComposer = new AnnBatesStampComposer(); //Create Bates stamp container, set its size and mapper and attach it to the composer AnnContainer batesStampContainer = new AnnContainer(); batesStampContainer.Mapper.MapResolutions(_image.XResolution, _image.YResolution, _image.XResolution, _image.YResolution); batesStampContainer.Size = batesStampContainer.Mapper.SizeToContainerCoordinates(LeadSizeD.Create(_image.Width, _image.Height)); //Create AnnBatesStamp and set its properties AnnBatesStamp batesStamp = new AnnBatesStamp(); batesStamp.Font = new AnnFont( "Arial" , 12); batesStamp.Foreground = AnnSolidColorBrush.Create( "Red" ); batesStamp.HorizontalAlignment = AnnHorizontalAlignment.Center; batesStamp.VerticalAlignment = AnnVerticalAlignment.Center; batesStamp.Logo.Angle = 45; batesStamp.Logo.Font = new AnnFont( "Arial" , 32); batesStamp.Logo.Opacity = 0.5; batesStamp.Logo.StretchLogo = true ; batesStamp.Logo.Text = "Watermark" ; batesStampComposer.Stamps.Add(batesStamp); //Apply Bates Stamp to our container batesStampComposer.TargetContainers.Add(batesStampContainer); AnnBatesStampComposer.RenderingEngine.RenderOnImage(batesStampContainer, _image); _codecs.Save(_image, @ "C:\LEADTOOLS21\Resources\Images\watermarkedImage.tif" , RasterImageFormat.Tif, 8); }

paul daniel · Answer

Hi 1) Run Visual Studio 2005 2) Create new "Web-Site" project using Project Wizard 3) Click "Website" menu and then "Add Reference" command in this menu 4) "Add Reference" dialog will appear. Select "Bytescout.Watermarking.dll" and click OK to add a reference to Bytescout.Watermarking SDK component 5) Then copy and paste the following code into the "Default.aspx.cs" file (see below) using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using Bytescout.Watermarking; using Bytescout.Watermarking.Presets; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { // Create Watermarker instance Watermarker waterMarker = new Watermarker(); // Initialize library waterMarker.InitLibrary("demo", "demo"); // Set input file name string inputFilePath = "my_sample_image.jpg"; // Add image to apply watermarks to waterMarker.AddInputFile(inputFilePath); // Create new watermark TextFitsPage preset = new TextFitsPage(); // Set watermark text preset.Text = "Bytescout Watermarking"; // Add watermark to watermarker waterMarker.AddWatermark(preset); // clear http output Response.Clear(); // set the content type to JPEG Response.ContentType = "image/jpeg"; // add content type header Response.AddHeader("Content-Type", "image/jpeg"); // set the content disposition Response.AddHeader("Content-Disposition", "inline;filename=my_sample_image.jpg"); // Set output directory waterMarker.OutputOptions.OutputStream = Response.OutputStream; // Apply watermarks waterMarker.Execute(0); Response.End(); } }

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