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ViewerBorderPadding Class

Summary

Determines the border padding for Leadtools ImageViewer controls.

Syntax

C++

public class ViewerBorderPadding

Public Class ViewerBorderPadding

public ref class ViewerBorderPadding

Example

Public Sub ViewerBorderPaddingExample(ByVal viewer As RasterImageViewer) 
   If (viewer.IsImageAvailable) Then 
      AddHandler viewer.BorderPadding.Changed, AddressOf BorderPadding_Changed 
      viewer.BorderPadding.All = 0 
      Dim viewerWidth As Integer = viewer.Right - viewer.Left 
      Dim viewerHeight As Integer = viewer.Bottom - viewer.Top 
      Dim imageWidth As Integer = viewer.Image.Width 
      Dim imageHeight As Integer = viewer.Image.Height 
 
      If (imageWidth < viewerWidth) Then 
         viewer.BorderPadding.Left = (viewerWidth - imageWidth) \ 2 
         viewer.BorderPadding.Right = 0 
      End If 
 
      If (imageHeight < viewerHeight) Then 
         viewer.BorderPadding.Top = (viewerHeight - imageHeight) \ 2 
         viewer.BorderPadding.Bottom = 0 
      End If 
      RemoveHandler viewer.BorderPadding.Changed, AddressOf BorderPadding_Changed 
   End If 
End Sub 
 
Private Sub BorderPadding_Changed(ByVal sender As Object, ByVal e As EventArgs) 
   Console.WriteLine("BorderPadding Changed") 
End Sub

using Leadtools.WinForms; 
using Leadtools; 
using Leadtools.Codecs; 
 
public void ViewerBorderPaddingExample(RasterImageViewer viewer) 
{ 
   if(viewer.IsImageAvailable) 
   { 
      viewer.BorderPadding.Changed += new EventHandler(BorderPadding_Changed); 
      viewer.BorderPadding.All = 0; 
      int viewerWidth = viewer.Right - viewer.Left; 
      int viewerHeight = viewer.Bottom - viewer.Top; 
      int imageWidth = viewer.Image.Width; 
      int imageHeight = viewer.Image.Height; 
 
      if(imageWidth < viewerWidth) 
      { 
         viewer.BorderPadding.Left = (viewerWidth - imageWidth) / 2; 
         viewer.BorderPadding.Right = 0; 
      } 
 
      if(imageHeight < viewerHeight) 
      { 
         viewer.BorderPadding.Top = (viewerHeight - imageHeight) / 2; 
         viewer.BorderPadding.Bottom = 0; 
      } 
 
      viewer.BorderPadding.Changed -= new EventHandler(BorderPadding_Changed); 
   } 
} 
 
private void BorderPadding_Changed(System.Object sender, EventArgs e) 
{ 
   Console.WriteLine("BorderPadding Changed"); 
}