LEADTOOLS画像ファイルサポート(Leadtools.Codecsアセンブリ)

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CodecsPngOptionsクラス








メンバ 
PNGイメージのロードと保存についての追加のオプションを提供します。
オブジェクトモデル
構文
public class CodecsPngOptions 
'Declaration
 
Public Class CodecsPngOptions 
'Usage
 
Dim instance As CodecsPngOptions
public sealed class CodecsPngOptions 
@interface LTCodecsPngOptions : NSObject
public class CodecsPngOptions
function Leadtools.Codecs.CodecsPngOptions()
public ref class CodecsPngOptions 
サンプル
Copy Code  
Imports Leadtools
Imports Leadtools.Codecs

      
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
using Leadtools;
using Leadtools.Codecs;

      
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();
         })
      }
   }
}
using Leadtools;
using Leadtools.Codecs;

      
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();
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Examples;
using Leadtools.ImageProcessing;

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();
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing

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
必要条件

ターゲットプラットホーム

参照

参照

CodecsPngOptionsメンバ
Leadtools.Codecs名前空間
PNGファイルと透明度