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ImageOptimizerDirectory Delegate

Summary

Called during the directory optimization operation to give the user information about the image(s) being optimized.

Syntax

C#
VB
C++
public delegate bool ImageOptimizerDirectory( 
   ImageOptimizerDirectoryData data 
) 
  
Public Delegate Function ImageOptimizerDirectory( _ 
   ByVal data As Leadtools.Imageoptimization.ImageOptimizerDirectoryData _ 
) As Boolean 
public delegate bool ImageOptimizerDirectory(  
   Leadtools.Imageoptimization.ImageOptimizerDirectoryData^ data 
) 

Parameters

data
A ImageOptimizerDirectoryData object containing information about the image(s) being optimized.

Return Value

A System.Boolean value that indicates whether to cancel the optimization operation for the current image. Possible values are:

Value Description
false Cancel the optimization operation for the current image.
true Continue normally.
Remarks

This method will be called to provide the user information about the image(s) being optimized, such as the percent completion for the current image being optimized, and the percent completion for all files being optimized.

Example

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageOptimization; 
 
int _imageNo; 
 
public void TestDirImageOptimizer() 
{ 
   _imageNo = 0; 
 
   // Initialize the RasterCodecs class 
   RasterCodecs codecs = new RasterCodecs(); 
 
   // The input and output directories 
   string inputDirectory = LEAD_VARS.ImagesDir; 
   string outputDirectory = Path.Combine(LEAD_VARS.ImagesDir, "OptimizedImages"); 
 
   // Initialize a new Optimizer object 
   ImageOptimizer optimizer = new ImageOptimizer(); 
 
   // Optimization Options 
   ImageOptimizerOptions options = ImageOptimizerOptions.Default; 
 
   optimizer.OptimizeDirectory(codecs, 
      inputDirectory, 
      outputDirectory, 
      options, 
      "*.jpg", 
      false, 
      ImageOptimizerDirectory); 
 
   //shutdown the RasterCodecs class. 
} 
 
bool ImageOptimizerDirectory(ImageOptimizerDirectoryData data) 
{ 
   Console.WriteLine(string.Format("File Percent = {0}%,    Total Percent = {1}%", data.FilePercent, data.TotalPercent)); 
 
   if (_imageNo == data.TotalFolderFilesCount) 
   { 
      // Operation Done. 
      Console.WriteLine("Optimization Operation Completed Successfully"); 
      return true; 
   } 
   else if (data.Status == ImageOptimizerDirectoryStatus.PreOptimizingImage) 
   { 
      string text = string.Format("Optimizing Image {0} ?\n", data.InputFileName); 
      DialogResult result = MessageBox.Show(text, "", MessageBoxButtons.YesNoCancel); 
 
      if (result == DialogResult.Yes) 
      { 
         // Optimize the image using the default options. 
         data.Options = ImageOptimizerOptions.Default; 
         return true; 
      } 
      else if (result == DialogResult.No) 
      { 
         // Skip this image. 
         _imageNo++; 
         data.SkipImage = true; 
      } 
      else 
         // Stop the whole operation. 
         return false; 
   } 
   else if (data.FilePercent == 100) 
   { 
      _imageNo++; 
 
      // Displaying information about the optimized image. 
      string msg = string.Format("Optimizing File ( {0} of {1} ) \n" + 
         "--------------------------------\n" + 
         "Source File Name = {2}\n" + 
         "Detination File Name = {3}\n" + 
         "No of Pages = {4}\n", 
         _imageNo, data.TotalFolderFilesCount, data.InputFileName, data.OutputFileName, data.ImageInfo.TotalPages); 
 
      Console.WriteLine(msg); 
   } 
   return true; 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageOptimization 
Imports Leadtools.Support.Examples 
 
 
Private _imageNo As Integer 
Public Sub TestDirImageOptimizer() 
   _imageNo = 0 
 
   ' Initialize the RasterCodecs class 
   Dim codecs As RasterCodecs = New RasterCodecs() 
 
   ' The input and output directories 
   Dim inputDirectory As String = LEAD_VARS.ImagesDir 
   Dim outputDirectory As String = Path.Combine(LEAD_VARS.ImagesDir, "OptimizedImages") 
 
   ' Initialize a new Optimizer object 
   Dim optimizer As ImageOptimizer = New ImageOptimizer() 
 
   ' Optimization Options 
   Dim options As ImageOptimizerOptions = ImageOptimizerOptions.Default 
 
   optimizer.OptimizeDirectory(codecs, 
      inputDirectory, 
      outputDirectory, 
      options, 
      "*.jpg", 
      False, 
      AddressOf ImageOptimizerDirectory) 
 
   'shutdown the RasterCodecs class. 
End Sub 
 
Public Function ImageOptimizerDirectory(ByVal data As ImageOptimizerDirectoryData) As Boolean 
   Console.WriteLine(String.Format("File Percent = {0}%,    Total Percent = {1}%", data.FilePercent, data.TotalPercent)) 
 
   If (_imageNo = data.TotalFolderFilesCount) Then 
 
      ' Operation Done. 
      Console.WriteLine("Optimization Operation Completed Successfully") 
      Return True 
 
   ElseIf (data.Status = ImageOptimizerDirectoryStatus.PreOptimizingImage) Then 
      Dim text As String = String.Format("Optimizing Image {0} ?\n", data.InputFileName) 
      Dim result As DialogResult = MessageBox.Show(text, "", MessageBoxButtons.YesNoCancel) 
 
      If (result = DialogResult.Yes) Then 
         ' Optimize the image using the default options. 
         data.Options = ImageOptimizerOptions.Default 
         Return True 
      ElseIf (result = DialogResult.No) Then 
         ' Skip this image. 
         _imageNo += 1 
         data.SkipImage = True 
      Else 
         ' Stop the whole operation. 
         Return False 
      End If 
   ElseIf (data.FilePercent = 100) Then 
      _imageNo += 1 
 
      ' Displaying information about the optimized image. 
      Dim msg As String = String.Format("Optimizing File ( {0} of {1} ) \n" + 
         "--------------------------------\n" + 
         "Source File Name = {2}\n" + 
         "Detination File Name = {3}\n" + 
         "No of Pages = {4}\n", 
         _imageNo, data.TotalFolderFilesCount, data.InputFileName, data.OutputFileName, data.ImageInfo.TotalPages) 
 
      Console.WriteLine(msg) 
   End If 
   Return True 
End Function 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class 

Requirements

Target Platforms

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