FixedPalette Property

Summary

Enables or disables loading the image to the LEAD fixed palette.

Syntax

Objective-C

C++/CLI

Java

Python

public bool FixedPalette { get; set; }

@property (nonatomic, assign) BOOL fixedPalette;

public boolean getFixedPalette() 
public void setFixedPalette(boolean value)

public: 
property bool FixedPalette { 
   bool get(); 
   void set (    bool ); 
}

FixedPalette # get and set (CodecsLoadOptions)

Property Value

Value	Description
true	To force a palletized image to be dithered to the LEAD fixed palette.
false	To not force a palletized image to be dithered to the LEAD fixed palette. The default value is false.

Example

using Leadtools; 
using Leadtools.Codecs; 
 
using Leadtools.ImageProcessing.Core; 
 
 
RasterImage image; 
private void Codecs_LoadImage(object sender, CodecsLoadImageEventArgs e) 
{ 
   //copy each row of data into our manually allocated RasterImage 
   image.SetRow(e.Row, e.Buffer.Data, image.BytesPerLine * e.Lines); 
} 
 
public void AllocateImageExample() 
{ 
   string fileName = Path.Combine(LEAD_VARS.ImagesDir, "image1.cmp"); 
   RasterCodecs codecs = new RasterCodecs(); 
   CodecsImageInfo info = codecs.GetInformation(fileName, false); 
   int size = info.Width * info.Height * info.BitsPerPixel; 
   IntPtr data = Marshal.AllocHGlobal(size); 
 
   image = new RasterImage(RasterMemoryFlags.User, info.Width, info.Height, info.BitsPerPixel, RasterByteOrder.Bgr, info.ViewPerspective, null, data, size); 
   image.Access(); 
   //Setting the loading options. 
   //Do NOT allow LEADTOOLS to allocate the image data 
   codecs.Options.Load.AllocateImage = false; // CodecsOptions & CodecsLoadOptions reference 
   codecs.Options.Load.StoreDataInImage = false; 
   //keeping the loaded image data compressed in memory. 
   codecs.Options.Load.Compressed = true; 
   codecs.Options.Load.DiskMemory = false; 
   //force a palletized image to be dithered to the LEAD fixed palette. 
   codecs.Options.Load.FixedPalette = true; 
   //we know the format of the file 
   codecs.Options.Load.Format = RasterImageFormat.Cmp; 
   //disable loading metadata markers if present in the file, false to ignore them. 
   codecs.Options.Load.Markers = false; 
   codecs.Options.Load.NoDiskMemory = true; 
   codecs.Options.Load.NoInterlace = false; 
   codecs.Options.Load.NoTiledMemory = true; 
   codecs.Options.Load.Passes = 0; 
   //ignore the view perspective stored in the file. 
   codecs.Options.Load.Rotated = false; 
   //set negative pixel values to 0. 
   codecs.Options.Load.Signed = false; 
   codecs.Options.Load.InitAlpha = true; 
   //load super-compressed in memory 
   codecs.Options.Load.SuperCompressed = true; 
   codecs.Options.Load.TiledMemory = false; 
   codecs.Options.Load.XResolution = 350; 
   codecs.Options.Load.YResolution = 350; 
   //allow loading corrupted images 
   codecs.Options.Load.LoadCorrupted = true; 
 
   codecs.LoadImage += Codecs_LoadImage; 
   codecs.Load(fileName); 
   codecs.LoadImage -= Codecs_LoadImage; 
   image.Release(); 
 
   //Meta file's comments will be saved. 
   //CodecsSaveOptions reference 
   codecs.Options.Save.Comments = true; 
   codecs.Options.Save.FixedPalette = true; 
   codecs.Options.Save.GeoKeys = false; 
   //Tiff file output will be gray. 
   codecs.Options.Save.GrayOutput = true; 
   //Meta file's markers will be saved. 
   codecs.Options.Save.Markers = true; 
   codecs.Options.Save.MotorolaOrder = false; 
   codecs.Options.Save.OptimizedPalette = true; 
   codecs.Options.Save.Password = "LEADTOOLS"; 
 
   LeadSize[] resolutions = new LeadSize[1]; 
   resolutions[0].Width = 350; 
   resolutions[0].Height = 350; 
 
   codecs.Options.Save.GetResolutions(); 
   codecs.Options.Save.SetResolutions(resolutions); 
   codecs.Options.Save.Reset(); 
 
   //Meta file's tags will be saved. 
   codecs.Options.Save.Tags = true; 
   codecs.Options.Save.UseImageDitheringMethod = true; 
 
 
 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "allocate_image.tif"), RasterImageFormat.Tif, 8, 1, image.PageCount, 1, CodecsSavePageMode.Overwrite); 
 
   // Finalize cannot be called directly, it is invoked automatically. 
   // To clean up before exiting, use Dispose 
   image.Dispose(); 
   Marshal.FreeHGlobal(data); 
   codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

CodecsLoadOptions Class

CodecsLoadOptions Members

Download our FREE evaluation

Help Version 22.0.2023.5.5

Leadtools.Codecs Assembly

Introduction

Getting Started

Namespaces

Leadtools.Codecs Namespace

Assemblies