CombineFloater Method

Summary

Combines the floaters with the images for all items inside this ImageViewer.

Syntax

C++/CLI

public virtual void CombineFloater( 
   bool deleteFloater 
)

public:  
   virtual void CombineFloater( 
      bool deleteFloater 
   )

Parameters

deleteFloater

true to automatically delete the floater image from the item after combining, otherwise; false.

Remarks

This method will loop through all the items inside this ImageViewer and check if any has a floater image (the value of ImageViewerItem.Floater is not null) that is visible (the value of ImageViewerItem.FloaterOpacity is not 0). If so, it will try to combine this floater with the item images using ImageViewerItem.CombineFloater.

The floater transformation (position, scale and rotation value) is stored in ImageViewerItem.FloaterTransform for each item and this method will use this value during the combine operation.

The floater transformation might result in it being layered on top of more than one item (its original or other) and this method will combine the floater with all the items that intersect with the final floater position and size.

Example

using Leadtools; 
using Leadtools.Controls; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
 
 
public void ImageViewerFloater_Example() 
{ 
   ImageViewerItem item = null; 
   RasterImage image = null; 
 
   if (_imageViewer.Items.Count > 0) 
   { 
      item = _imageViewer.Items[0]; 
      image = item.Image; 
   } 
 
   if (image == null) 
   { 
      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; 
   } 
 
   image.MakeRegionEmpty(); 
   floater.MakeRegionEmpty(); 
 
   item.Floater = floater; 
   var transform = item.FloaterTransform; 
   transform.RotateAt(45, floater.ImageWidth / 2, floater.ImageHeight / 2); 
 
   item.FloaterTransform = transform; 
}

Requirements

Target Platforms

Reference

ImageViewer Class

ImageViewer Members

Leadtools.Controls Namespace

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Help Version 22.0.2023.1.24

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