RasterViewerInteractiveMode Enumeration

C#
Visual Basic
Objective-C
Java
C++

public enum RasterViewerInteractiveMode : System.Enum, System.IComparable, System.IConvertible, System.IFormattable

'Declaration
 
Public Enum RasterViewerInteractiveMode 
   Inherits System.Enum
   Implements System.IComparable, System.IConvertible, System.IFormattable

'Usage
 
Dim instance As RasterViewerInteractiveMode

public enum class RasterViewerInteractiveMode : public System.Enum, System.IComparable, System.IConvertible, System.IFormattable

Value	Member	Description
0x00000000	None	Default, no user interaction.
0x00000001	Pan	Allows the user to pan the image using the mouse.
0x00000002	CenterAt	Centers the image at the mouse coordinates for the last user click. This will call the RasterImageViewer.CenterAtPoint method.
0x00000003	ZoomTo	Zooms the image to the rectangle created by the user.
0x00000004	Region	Creates a region based on user interaction. The type of region created depends on the RasterImageViewer.InteractiveRegionType property.
0x00000005	MagnifyGlass	Starts the MagnifyGlass.
0x00000006	Floater	Starts moving the RasterImageViewer.FloaterImage.
0x00000007	Page	Allows the user to change the current page in the image using the mouse.
0x00000008	Scale	Allows the user to change the current scale factor of the image using the mouse.
0x00000009	UserRectangle	User-defined rectangle. You should subscribe to the RasterImageViewer.InteractiveUserRectangle event to add your custom code to handle the rectangle drawn.
0x0000000A	ZoomAt	Zooms the image at the mouse coordinates for the last user click. This will call the RasterImageViewer.ZoomAtPoint method with scaleFactor set to RasterImageViewer.CenterZoomAtPointScaleFactor.

The RasterImageViewer.InteractiveMode property controls user interaction with the control's display.

This example will set the viewer interactive mode to "ZoomAt", it will also alternate the scale factor used with each click between 2 and 0.5. When you run this example, the first click on the viewer will zoom in the image around that point twice. When you click again, the viewer will zoom out the image around that point twice. Subsequent clicks will repeat these operations.

C#
Visual Basic
WinRT C#
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Silverlight C#
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Imports Leadtools.WinForms
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Drawing

Private Shared Sub RasterViewerInteractiveModeExample(ByVal viewer As RasterImageViewer)
   ' Make sure the viewer size mode is normal
   viewer.SizeMode = RasterPaintSizeMode.Normal
   ' Set interactive mode to ZoomAt
   viewer.InteractiveMode = RasterViewerInteractiveMode.ZoomAt

   ' Set the center at scale factor to 1, so zoom in twice with each click
   viewer.CenterZoomAtPointScaleFactor = 2.0

   AddHandler viewer.InteractiveModeEnded, AddressOf viewer_InteractiveModeEnded
End Sub

Private Shared Sub viewer_InteractiveModeEnded(ByVal sender As Object, ByVal e As EventArgs)
   ' Check if this is the Center At interactive mode
   Dim viewer As RasterImageViewer = CType(sender, RasterImageViewer)
   If viewer.InteractiveMode = RasterViewerInteractiveMode.ZoomAt Then
      If viewer.CenterZoomAtPointScaleFactor = 2.0 Then
         ' Switch the scale factor to 0.5, so next time we click, it will zoom out twice
         viewer.CenterZoomAtPointScaleFactor = 0.5
      Else
         ' Back to 2, so we zoom in
         viewer.CenterZoomAtPointScaleFactor = 2.0
      End If
   End If
End Sub

using Leadtools.WinForms;
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Color;
using Leadtools.Drawing;

private static void RasterViewerInteractiveModeExample(RasterImageViewer viewer)
{
   // Make sure the viewer size mode is normal
   viewer.SizeMode = RasterPaintSizeMode.Normal;
   // Set interactive mode to ZoomAt
   viewer.InteractiveMode = RasterViewerInteractiveMode.ZoomAt;

   // Set the center at scale factor to 1, so zoom in twice with each click
   viewer.CenterZoomAtPointScaleFactor = 2.0;

   viewer.InteractiveModeEnded += viewer_ZoomAtInteractiveModeEnded;
}
private static void viewer_ZoomAtInteractiveModeEnded(object sender, EventArgs e)
{
   // Check if this is the Center At interactive mode
   RasterImageViewer viewer = sender as RasterImageViewer;
   if (viewer.InteractiveMode == RasterViewerInteractiveMode.ZoomAt)
   {
      if (viewer.CenterZoomAtPointScaleFactor == 2.0)
      {
         // Switch the scale factor to 0.5, so next time we click, it will zoom out twice
         viewer.CenterZoomAtPointScaleFactor = 0.5;
      }
      else
      {
         // Back to 2, so we zoom in
         viewer.CenterZoomAtPointScaleFactor = 2.0;
      }
   }
}

System.Object
   System.ValueType
      System.Enum
         Leadtools.WinForms.RasterViewerInteractiveMode

Target Platforms

Reference

Leadtools.WinForms Namespace