CodecsPngOptions Class

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public class CodecsPngOptions

'Declaration
 
Public Class CodecsPngOptions

'Usage
 
Dim instance As CodecsPngOptions

public sealed class CodecsPngOptions

function Leadtools.Codecs.CodecsPngOptions()

public ref class CodecsPngOptions

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Public Sub CodecsPngOptionsExample()
      Dim codecs As RasterCodecs = New RasterCodecs()

      Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
      Dim image As RasterImage = codecs.Load(srcFileName)

      ' save with maximum quality
      codecs.Options.Png.Save.QualityFactor = 1
      codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "quality.png"), RasterImageFormat.Png, image.BitsPerPixel)

      ' save with maximum compression
      codecs.Options.Png.Save.QualityFactor = 9
      codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "compression.png"), RasterImageFormat.Png, image.BitsPerPixel)

      ' Clean up
      image.Dispose()
      codecs.Dispose()
   End Sub

Public NotInheritable Class LEAD_VARS
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

public void CodecsPngOptionsExample()
     {
         RasterCodecs codecs = new RasterCodecs();

         string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
         RasterImage image = codecs.Load(srcFileName);

         // save with maximum quality
         codecs.Options.Png.Save.QualityFactor = 1;
         codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "quality.png"), RasterImageFormat.Png, image.BitsPerPixel);

         // save with maximum compression
         codecs.Options.Png.Save.QualityFactor = 9;
         codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "compression.png"), RasterImageFormat.Png, image.BitsPerPixel);

         // Clean up
         image.Dispose();
         codecs.Dispose();
     }

static class LEAD_VARS
{
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

CodecsOptionsExamples.prototype.CodecsPngOptionsExample = function ( )
{
   Tools.SetLicense ( ) ;
   with (Leadtools) {
      with (Leadtools.Codecs) {
         var codecs = new RasterCodecs();
         var image;
         // Load the image
         var srcFileName = "Assets\\Image1.cmp";
         return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) {
            return codecs.loadAsync(LeadStreamFactory.create(loadFile))
         })
         .then(function (img) {
            image = img;

            //Save as PNG
            // save with maximum quality
            codecs.options.png.save.qualityFactor = 1;

            var destFileName = "quality.png";
            return Tools.AppLocalFolder().createFileAsync(destFileName)
         })
         .then(function (saveFile) {
            return codecs.saveAsync(image, LeadStreamFactory.create(saveFile), RasterImageFormat.png, image.bitsPerPixel)
         })
         .then(function () {

            // save with maximum compression
            codecs.options.png.save.qualityFactor = 9;
            destFileName = "compression.png";
            return Tools.AppLocalFolder().createFileAsync(destFileName)
         })
         .then(function (saveFile) {
            return codecs.saveAsync(image, LeadStreamFactory.create(saveFile), RasterImageFormat.png, image.bitsPerPixel)
         })
         .then(function () {
            // Clean up
            image.close();
            codecs.close();
         })
      }
   }
}

[TestMethod]
public async Task CodecsPngOptionsExample()
{
   RasterCodecs codecs = new RasterCodecs();
   // Load the image
   string srcFileName = @"Assets\Image1.cmp";
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   //Save as PNG
   // save with maximum quality
   codecs.Options.Png.Save.QualityFactor = 1;
   string destFileName = @"quality.png";
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Png, image.BitsPerPixel);

   // save with maximum compression
   codecs.Options.Png.Save.QualityFactor = 9;
   destFileName = @"compression.png";
   saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Png, image.BitsPerPixel);

   // Clean up
   image.Dispose();
   codecs.Dispose();
}

public void CodecsPngOptionsExample(Stream inStream, Stream outStreamPng1, Stream outStreamPng2)
{
   RasterCodecs codecs = new RasterCodecs();
   RasterImage image = codecs.Load(inStream);

   // save with maximum quality
   codecs.Options.Png.Save.QualityFactor = 1;
   codecs.Save(image, outStreamPng1, RasterImageFormat.Png, image.BitsPerPixel);

   // save with maximum compression
   codecs.Options.Png.Save.QualityFactor = 9;
   codecs.Save(image, outStreamPng2, RasterImageFormat.Png, image.BitsPerPixel);

   // Clean up
   image.Dispose();
}

Public Sub CodecsPngOptionsExample(ByVal inStream As Stream, ByVal outStreamPng1 As Stream, ByVal outStreamPng2 As Stream)
   Dim codecs As RasterCodecs = New RasterCodecs()
   Dim image As RasterImage = codecs.Load(inStream)

   ' save with maximum quality
   codecs.Options.Png.Save.QualityFactor = 1
   codecs.Save(image, outStreamPng1, RasterImageFormat.Png, image.BitsPerPixel)

   ' save with maximum compression
   codecs.Options.Png.Save.QualityFactor = 9
   codecs.Save(image, outStreamPng2, RasterImageFormat.Png, image.BitsPerPixel)

   ' Clean up
   image.Dispose()
End Sub

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

CodecsPngOptions Members
Leadtools.Codecs Namespace
PNG Files and Transparency