ImageViewerMagnifyGlassInteractiveMode Class

Summary

Shows a magnified version of the image on top of the viewer.

Syntax

Objective-C

C++/CLI

public class ImageViewerMagnifyGlassInteractiveMode : ImageViewerSpyGlassInteractiveMode

@interface LTImageViewerMagnifyGlassInteractiveMode : LTImageViewerSpyGlassInteractiveMode<NSCoding>

public ref class ImageViewerMagnifyGlassInteractiveMode : ImageViewerSpyGlassInteractiveMode

Remarks

ImageViewerMagnifyGlassInteractiveMode derives from ImageViewerSpyGlassInteractiveMode and waits for the DrawImage event. When this event fires, it will then use the ScaleFactor value to draw a magnified version of the image area underneath the spy glass on top of the viewer.

Drawing a rubber-band on the viewer is usually followed by another user operation to perform the action. In most cases, the rubber band is to be restricted on the "work" area. The RestrictToWorkBounds can control this behavior.

This interactive mode does not subscribe to any additional events from the InteractiveService beyond those in ImageViewerSpyGlassInteractiveMode and does not set InteractiveEventArgs.IsHandled to true in any additional way.

For more information, refer to Image Viewer Interactive Modes.

Example

using Leadtools; 
using Leadtools.Controls; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
 
 
public ImageViewer _imageViewer; 
 
public void ImageViewerExample() 
{ 
   // Create the image viewer 
   _imageViewer = new ImageViewer(); 
   _imageViewer.Dock = DockStyle.Fill; 
   _imageViewer.BackColor = SystemColors.AppWorkspace; 
   this.Controls.Add(_imageViewer); 
   _imageViewer.BringToFront(); 
 
   // Add Pan/Zoom interactive mode 
   // Click and drag to pan, CTRL-Click and drag to zoom in and out 
   _imageViewer.DefaultInteractiveMode = new ImageViewerPanZoomInteractiveMode(); 
 
   // Get each ImageViewerInteractiveMode. This should only return PanZoom 
   foreach (var mode in _imageViewer.InteractiveModes) 
   { 
      Debug.WriteLine(mode); 
   } 
 
   var intertiaOptions = ControlInertiaScrollOptions.CreateDefault(); 
   intertiaOptions.IsEnabled = true; 
 
   // Load an image 
   using (var codecs = new RasterCodecs()) 
      _imageViewer.Image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "image1.cmp")); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

Requirements

Target Platforms

Reference

ImageViewerMagnifyGlassInteractiveMode Members

Leadtools.Controls Namespace

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Help Version 23.0.2024.2.29

Leadtools.Controls Assembly

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Leadtools.Controls Namespace

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