FloaterTransform Property

Summary

Transformation matrix used by the floater image (single item mode).

Syntax

C++/CLI

public virtual LeadMatrix FloaterTransform { get; set; }

public:  
   virtual property LeadMatrix^ FloaterTransform 
   { 
      LeadMatrix^ get() 
      void set(LeadMatrix^ value) 
   }

Property Value

The transformation matrix used by the floater image (single item mode). Default value is Identity.

Remarks

This is a helper property for applications that use ImageViewer in single item mode. It is a shortcut to FloaterTransform of ActiveItem. For more information, refer to Image Viewer in Single Item Mode.

Example

using Leadtools; 
using Leadtools.Controls; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
 
 
public ImageViewerForm _form = new ImageViewerForm(); 
public ImageViewer _imageViewer; 
 
public void ImageViewerFloaterExample() 
{ 
   // Get the Form's ImageViewer control 
   _imageViewer = _form.ImageViewer; 
 
   // Load an image 
   using (var codecs = new RasterCodecs()) 
      _imageViewer.Image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")); 
 
   ImageViewerItem item = null; 
   RasterImage image = null; 
 
   if (_imageViewer.Items.Count > 0) 
   { 
      item = _imageViewer.Items[0]; 
      image = item.Image; 
   } 
 
   if (image == null) 
   { 
      item.ImageRegionToFloater(); 
      if (item == null) 
         item = _imageViewer.Items.AddFromImage(RasterImage.Create(400, 400, 24, 96, RasterColor.White), 1); 
      else 
         item.Image = RasterImage.Create(400, 400, 24, 96, RasterColor.White); 
   } 
 
   var xForm = RasterRegionXForm.Default; 
   image.AddRectangleToRegion(xForm, new LeadRect(10, 10, 400, 200), RasterRegionCombineMode.Set); 
 
   xForm = RasterRegionXForm.Default; 
   xForm.ViewPerspective = image.ViewPerspective; 
   var rc = image.GetRegionBounds(xForm); 
   var command = new CopyRectangleCommand(rc, RasterMemoryFlags.Conventional); 
   command.Run(image); 
 
   var floater = command.DestinationImage; 
 
   rc = image.RectangleFromImage(RasterViewPerspective.TopLeft, rc); 
 
   if (floater != null) 
   { 
      xForm.ViewPerspective = RasterViewPerspective.TopLeft; 
      xForm.ViewPerspective = RasterViewPerspective.TopLeft; 
      xForm.XOffset = -rc.Left; 
      xForm.YOffset = -rc.Top; 
      _imageViewer.FloaterOpacity = 1.0; 
   } 
 
   item.CombineFloater(null, true); 
   _imageViewer.CombineFloater(false); 
   image.MakeRegionEmpty(); 
   floater.MakeRegionEmpty(); 
 
   item.Floater = floater; 
   var transform = item.FloaterTransform; 
   transform.RotateAt(45, floater.ImageWidth / 2, floater.ImageHeight / 2); 
 
   item.FloaterTransform = transform; 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

Requirements

Target Platforms

Reference

ImageViewer Class

ImageViewer Members

Leadtools.Controls Namespace

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Help Version 23.0.2024.2.29

Leadtools.Controls Assembly

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