PngQualityFactor Property

Summary

Gets or sets the PNG quality factor used saving a raster image as an Open XML Paper Specification (XPS) document.

Syntax

C++/CLI

Java

Python

public int PngQualityFactor {get; set;}

public int getPngQualityFactor() 
public void setPngQualityFactor(int qualityFactor)

public: 
property int PngQualityFactor { 
   int get(); 
   void set (    int );

PngQualityFactor # get and set (CodecsXpsSaveOptions)

Property Value

Value	Description
0	Default compression
1	Fastest compression
3	Default value
9	Highest compression ratio
10	No compression
0-10.0	Value Range

Remarks

The RasterCodecs object will use the PngQualityFactor value when images are saved with the RasterImageFormat.Xps format.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
 
using Leadtools.ImageProcessing.Core; 
using Leadtools.Pdf; 
 
public void CodecsXpsOptionsExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
 
   string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "test.xps"); 
   string pngDestFileName = Path.Combine(LEAD_VARS.ImagesDir, "PngCompressed.xps"); 
   string jpegDestFileName = Path.Combine(LEAD_VARS.ImagesDir, "JpegCompressed.xps"); 
 
   // Set the resolution for loading XPS files to 300 by 300 DPI (Dots per inch) 
   // CodecsXpsOptions & CodecsXpsLoadOptions reference 
   codecs.Options.RasterizeDocument.Load.XResolution = 300; 
   codecs.Options.RasterizeDocument.Load.YResolution = 300; 
 
   // Load the source file 
   RasterImage image = codecs.Load(srcFileName); 
 
   // Save this file as XPS with PNG compression and quality factor of 9 (highest compression) 
   // CodecsXpsSaveOptions reference 
   codecs.Options.Xps.Save.PngQualityFactor = 9; 
   codecs.Save(image, pngDestFileName, RasterImageFormat.Xps, 24); 
 
   // Save this file as XPS with JPEG 422 compression and quality factor of 255 (highest compression) 
   codecs.Options.Xps.Save.JpegQualityFactor = 255; 
   codecs.Save(image, jpegDestFileName, RasterImageFormat.Xps, 24); 
 
   // Clean up 
   image.Dispose(); 
   codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.IOException; 
import java.net.URI; 
import java.net.URISyntaxException; 
import java.nio.file.Paths; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.core.MinMaxBitsCommand; 
 
 
public void codecsXpsOptionsExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   RasterCodecs codecs = new RasterCodecs(); 
   String srcFileName = combine(LEAD_VARS_IMAGES_DIR, "Leadtools.xps"); 
   String pngDestFileName = combine(LEAD_VARS_IMAGES_DIR, "PngCompressed.xps"); 
   String jpegDestFileName = combine(LEAD_VARS_IMAGES_DIR, "JpegCompressed.xps"); 
 
   // Set the resolution for loading XPS files to 300 by 300 DPI (Dots per inch) 
   // CodecsXpsOptions & CodecsXpsLoadOptions reference 
   codecs.getOptions().getRasterizeDocument().getLoad().setXResolution(300); 
   codecs.getOptions().getRasterizeDocument().getLoad().setYResolution(300); 
   // Load the source file 
   RasterImage image = codecs.load(srcFileName); 
 
   // Save this file as XPS with PNG compression and quality factor of 9 (highest compression) 
   // CodecsXpsSaveOptions reference 
   codecs.getOptions().getXps().getSave().setPngQualityFactor(9); 
   codecs.save(image, pngDestFileName, RasterImageFormat.XPS, 24); 
   assertTrue("File unsuccessfully saved to " + pngDestFileName, (new File(pngDestFileName)).exists()); 
   System.out.printf("File successfully saved to %s%n", pngDestFileName); 
 
   // Save this file as XPS with JPEG 422 compression and quality factor of 255 
   // (highest compression) 
   codecs.getOptions().getXps().getSave().setJpegQualityFactor(255); 
   codecs.save(image, jpegDestFileName, RasterImageFormat.XPS, 24); 
 
   assertTrue("File unsuccessfully saved to " + jpegDestFileName, (new File(jpegDestFileName)).exists()); 
   System.out.printf("File successfully saved to %s%n", jpegDestFileName); 
 
   // Clean up 
   image.dispose(); 
   codecs.dispose(); 
}

Requirements

Target Platforms

Reference

CodecsXpsSaveOptions Class

CodecsXpsSaveOptions Members

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Help Version 23.0.2024.2.29

Leadtools.Codecs Assembly

Introduction

Getting Started

Namespaces

Leadtools.Codecs Namespace

Assemblies