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

using Leadtools; 
using Leadtools.Codecs; 
 
using Leadtools.ImageProcessing.Core; 
 
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:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

CodecsXpsSaveOptions Class

CodecsXpsSaveOptions Members

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Help Version 22.0.2023.5.5

Leadtools.Codecs Assembly

Introduction

Getting Started

Namespaces

Leadtools.Codecs Namespace

Assemblies