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InvertEffect Class

Summary

Inverts the colors in the specified image, giving it the appearance of a photographic negative.

Syntax

C++

public class InvertEffect : System.Windows.Media.Effects.ShaderEffect, System.Windows.Media.Animation.IAnimatable

Public Class InvertEffect  
   Inherits System.Windows.Media.Effects.ShaderEffect 
   Implements System.Windows.Media.Animation.IAnimatable

public ref class InvertEffect : public System.Windows.Media.Effects.ShaderEffect, System.Windows.Media.Animation.IAnimatable

Remarks

This class can also be used to invert the color of a 1-bit image, making the black white and the white black.

Example

Silverlight C#

Silverlight VB

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing 
Imports Leadtools.Windows.Controls 
Imports Leadtools.Windows.Media 
Imports Leadtools.Windows.Media.Effects 
 
Class InvertEffectExampleWindow 
   Inherits Window 
   Private theViewer As ImageViewer 
 
   Public Sub New() 
      Dim sp As New StackPanel() 
      Content = sp 
 
      theViewer = New ImageViewer() 
 
      theViewer.HorizontalAlignment = HorizontalAlignment.Center 
      theViewer.VerticalAlignment = VerticalAlignment.Top 
      theViewer.ImageHorizontalAlignment = HorizontalAlignment.Left 
      theViewer.ImageVerticalAlignment = VerticalAlignment.Top 
 
      sp.Children.Add(theViewer) 
 
      ' Load an image into the viewer 
      theViewer.Source = New BitmapImage(New Uri(System.IO.Path.Combine(LEAD_VARS.ImagesDir, "Cannon.jpg"))) 
 
      Title = "Double click to use the Effect" 
 
      AddHandler theViewer.MouseDoubleClick, AddressOf theViewer_MouseDoubleClick 
   End Sub 
 
   Private Sub theViewer_MouseDoubleClick(ByVal sender As Object, ByVal e As MouseButtonEventArgs) 
      Dim effect As New InvertEffect() 
      theViewer.ImageEffect = effect 
 
      Title = "Using InvertEffect" 
   End Sub 
End Class 
 
Public NotInheritable Class LEAD_VARS 
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.Windows.Controls; 
using Leadtools.Windows.Media; 
using Leadtools.Windows.Media.Effects; 
 
class InvertEffectExampleWindow : Window 
{ 
   private ImageViewer theViewer; 
   public InvertEffectExampleWindow() 
   { 
      StackPanel sp = new StackPanel(); 
      Content = sp; 
 
      theViewer = new ImageViewer(); 
 
      theViewer.HorizontalAlignment = HorizontalAlignment.Center; 
      theViewer.VerticalAlignment = VerticalAlignment.Top; 
      theViewer.ImageHorizontalAlignment = HorizontalAlignment.Left; 
      theViewer.ImageVerticalAlignment = VerticalAlignment.Top; 
 
      sp.Children.Add(theViewer); 
 
      // Load an image into the viewer 
      theViewer.Source = new BitmapImage(new Uri(System.IO.Path.Combine(LEAD_VARS.ImagesDir, "Cannon.jpg"))); 
 
      Title = "Double click to use the Effect"; 
 
      theViewer.MouseDoubleClick += new MouseButtonEventHandler(theViewer_MouseDoubleClick); 
   } 
 
   private void theViewer_MouseDoubleClick(object sender, MouseButtonEventArgs e) 
   { 
      InvertEffect effect = new InvertEffect(); 
      theViewer.ImageEffect = effect; 
 
      Title = "Using InvertEffect"; 
   } 
} 
 
static class LEAD_VARS 
{ 
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.Windows.Media; 
using Leadtools.Windows.Media.Effects; 
using Leadtools.Windows.Controls; 
 
class InvertEffectExampleWindow : UserControl 
{ 
   private ImageViewer theViewer; 
   public InvertEffectExampleWindow() 
   { 
      StackPanel sp = new StackPanel(); 
      Content = sp; 
 
      theViewer = new ImageViewer(); 
 
      theViewer.HorizontalAlignment = HorizontalAlignment.Center; 
      theViewer.VerticalAlignment = VerticalAlignment.Top; 
      theViewer.ImageHorizontalAlignment = HorizontalAlignment.Left; 
      theViewer.ImageVerticalAlignment = VerticalAlignment.Top; 
 
      sp.Children.Add(theViewer); 
 
      // Load an image into the viewer 
      theViewer.Source = new BitmapImage(new Uri(LeadtoolsExamples.Common.ImagesPath.Path + "Cannon.jpg")); 
 
      //theViewer.MouseDoubleClick += new MouseButtonEventHandler(theViewer_MouseDoubleClick); 
   } 
 
   private void theViewer_MouseDoubleClick(object sender, MouseButtonEventArgs e) 
   { 
      InvertEffect effect = new InvertEffect(); 
      theViewer.ImageEffect = effect; 
   } 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing 
Imports Leadtools.Windows.Controls 
Imports Leadtools.Windows.Media 
Imports Leadtools.Windows.Media.Effects 
 
Class InvertEffectExampleWindow 
   Inherits UserControl 
   Private theViewer As ImageViewer 
 
   Public Sub New() 
      Dim sp As New StackPanel() 
      Content = sp 
 
      theViewer = New ImageViewer() 
 
      theViewer.HorizontalAlignment = HorizontalAlignment.Center 
      theViewer.VerticalAlignment = VerticalAlignment.Top 
      theViewer.ImageHorizontalAlignment = HorizontalAlignment.Left 
      theViewer.ImageVerticalAlignment = VerticalAlignment.Top 
 
      sp.Children.Add(theViewer) 
 
      ' Load an image into the viewer 
      theViewer.Source = New BitmapImage(New Uri(LeadtoolsExamples.Common.ImagesPath.Path + "Cannon.jpg")) 
   End Sub 
 
   Private Sub theViewer_MouseDoubleClick(ByVal sender As Object, ByVal e As MouseButtonEventArgs) 
      Dim effect As New InvertEffect() 
      theViewer.ImageEffect = effect 
   End Sub 
End Class

<Window x:Class="InvertEffectExample" 
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
xmlns:leadControls="clr-namespace:Leadtools.Windows.Controls;assembly=Leadtools.Windows.Controls" 
xmlns:leadEffects="clr-namespace:Leadtools.Windows.Media.Effects;assembly=Leadtools.Windows.Media.Effects" 
Height="600" Width="800"> 
   <StackPanel> 
      <leadControls:ImageViewer 
         HorizontalAlignment="Center" VerticalAlignment="Top" 
         ImageHorizontalAlignment="Left" ImageVerticalAlignment="Top" 
         Source="file:///c:\users\Public\Documents\LEADTOOLS Images\cannon.jpg"> 
         <leadControls:ImageViewer.ImageEffect> 
            <leadEffects:InvertEffect/> 
         </leadControls:ImageViewer.ImageEffect> 
      </leadControls:ImageViewer> 
   </StackPanel> 
</Window>