PaletteFlags Property

Summary

Gets or sets the palette flags to use.

Syntax

Objective-C

C++/CLI

Java

Python

public ColorResolutionCommandPaletteFlags PaletteFlags { get; set; }

@property (nonatomic, assign) LTColorResolutionCommandPaletteFlags paletteFlags;

public ColorResolutionCommandPaletteFlags getPaletteFlags() 
public void setPaletteFlags(ColorResolutionCommandPaletteFlags value)

public: 
property ColorResolutionCommandPaletteFlags PaletteFlags { 
   ColorResolutionCommandPaletteFlags get(); 
   void set (    ColorResolutionCommandPaletteFlags ); 
}

PaletteFlags # get and set (CodecsThumbnailOptions)

Property Value

The palette flags to use. The default value is None.

Remarks

The PaletteFlags will be passed to ColorResolutionCommand internally when MaintainAspectRatio is true, ForceSize is true, and the source image is not 24-bit. In this case, the thumbnail image is converted to 24-bit, then, combined with a "background" image. The resulting image is then returned to the thumbnail image's original bit-depth using PaletteFlags.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Svg; 
 
 
public void ReadThumbnailExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
 
   string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); 
 
   // Create a thumbnail with default options 
   CodecsThumbnailOptions options = CodecsThumbnailOptions.Default; 
   options.LoadStamp = false; 
   RasterImage thumbnail = codecs.ReadThumbnail(srcFileName, options, 1); 
 
   Debug.WriteLine("Thumbnail with default option:"); 
   Debug.WriteLine("  Size: {0} by {1} pixels. Bits/Pixel: {2}", thumbnail.Width, thumbnail.Height, thumbnail.BitsPerPixel); 
   thumbnail.Dispose(); 
 
   // Create a thumbnail with some options 
   options.LoadStamp = false; 
   options.Width = 40; 
   options.Height = 80; 
   options.ForceSize = true; 
   options.MaintainAspectRatio = false; 
   options.BackColor = RasterColor.FromKnownColor(RasterKnownColor.LightBlue); 
   options.BitsPerPixel = 8; 
   options.DitheringMethod = RasterDitheringMethod.None; 
   options.Order = RasterByteOrder.Rgb; 
   options.PaletteFlags = ColorResolutionCommandPaletteFlags.None; 
   options.Resample = false; 
   thumbnail = codecs.ReadThumbnail(srcFileName, options, 1); 
 
   Debug.WriteLine("Thumbnail with set option (size: {0} by {1}, Bits/Pixel: {2}, ForeSize: {3}", 
      options.Width, options.Height, options.BitsPerPixel, options.ForceSize); 
   Debug.WriteLine("  Size: {0} by {1} pixels. Bits/Pixel: {2}", thumbnail.Width, thumbnail.Height, thumbnail.BitsPerPixel); 
   thumbnail.Dispose(); 
 
   codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

CodecsThumbnailOptions Structure

CodecsThumbnailOptions Members

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Help Version 22.0.2023.5.5

Leadtools.Codecs Assembly

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Leadtools.Codecs Namespace

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