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Floater Property (ImageViewerItem)

Summary

Floater image of this item.

Syntax

C++

public RasterImage Floater { get; set; }

Public Property Floater() As RasterImage 
   Get 
   Set

public:  
   property RasterImage^ Floater 
   { 
      RasterImage^ get() 
      void set(RasterImage^ value) 
   }

Property Value

The floater image of this item. Default value is null.

Remarks

The image viewer supports a floater image that can be dragged with the mouse or touch when ImageViewerFloaterInteractiveMode is used.

The floater outline can be rendered or animated using FloaterRegionRenderMode.

The position, scale and rotation of the floater can be manipulated with the FloaterTransform property.

FloaterOpacity can be used to set any opacity value for the floater from completely transparent to fully opaque and in between.

Changing the value of this property will fire the ItemChanged event with ImageViewerItemChangedReason.Floater.

The viewer will subscribe to RasterImage.Changed and automatically perform the necessary updates when the floater image changes externally by other parts of the application.

Floater property of ImageViewer will update this member if this is the active item when the viewer is used in single item mode.

For more information, refer to Image Viewer Items.

Example

using Leadtools; 
using Leadtools.Controls; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
using LeadtoolsExamples.Common; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
 
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;

Imports Leadtools 
Imports Leadtools.Controls 
Imports Leadtools.Codecs 
Imports Leadtools.Drawing 
Imports Leadtools.ImageProcessing 
Imports Leadtools.ImageProcessing.Color 
Imports LeadtoolsControlsExamples.LeadtoolsExamples.Common 
 
Dim item As ImageViewerItem = Nothing 
Dim image As RasterImage = Nothing 
 
If _imageViewer.Items.Count > 0 Then 
   item = _imageViewer.Items(0) 
   image = item.Image 
End If 
 
If image Is Nothing Then 
   If item Is Nothing Then 
      item = _imageViewer.Items.AddFromImage(RasterImage.Create(400, 400, 24, 96, RasterColor.White), 1) 
   Else 
      item.Image = RasterImage.Create(400, 400, 24, 96, RasterColor.White) 
   End If 
End If 
 
Dim xForm As RasterRegionXForm = RasterRegionXForm.Default 
image.AddRectangleToRegion(xForm, New LeadRect(10, 10, 400, 200), RasterRegionCombineMode.Set) 
 
xForm = RasterRegionXForm.Default 
xForm.ViewPerspective = image.ViewPerspective 
Dim rc As LeadRect = image.GetRegionBounds(xForm) 
Dim command As New CopyRectangleCommand(rc, RasterMemoryFlags.Conventional) 
command.Run(image) 
 
Dim floater As RasterImage = command.DestinationImage 
 
rc = image.RectangleFromImage(RasterViewPerspective.TopLeft, rc) 
 
If Not floater Is Nothing Then 
   xForm.ViewPerspective = RasterViewPerspective.TopLeft 
   xForm.ViewPerspective = RasterViewPerspective.TopLeft 
   xForm.XOffset = -rc.Left 
   xForm.YOffset = -rc.Top 
End If 
 
image.MakeRegionEmpty() 
floater.MakeRegionEmpty() 
 
item.Floater = floater 
Dim transform As LeadMatrix = item.FloaterTransform 
transform.RotateAt(45, floater.ImageWidth / 2, floater.ImageHeight / 2) 
 
item.FloaterTransform = transform