PdfContentXObjectTool Class
In This Topic
Visual tool that allows to extract, select, transform, replace or remove images or forms on PDF page.
Object Model
Syntax
Example
This example shows how to highlight focused XObject in PDF document loaded into image viewer.
''' <summary>
''' A form that allows to load PDF document into image viewer and
''' highlight focused XObject in PDF document.
''' </summary>
Public Partial Class PdfContentXObjectToolExamples
Inherits System.Windows.Forms.Form
'...
Private _imageViewer As Vintasoft.Imaging.UI.ImageViewer
Private _contentXObjectTool As Vintasoft.Imaging.Pdf.UI.PdfContentXObjectTool
Public Sub New()
'...
' create an instance of the PdfContentXObjectTool
_contentXObjectTool = New Vintasoft.Imaging.Pdf.UI.PdfContentXObjectTool()
' set a pen and brush for image selection
_contentXObjectTool.SelectionImagesBrush = New System.Drawing.SolidBrush(System.Drawing.Color.FromArgb(32, System.Drawing.Color.Blue))
_contentXObjectTool.SelectionImagesPen = System.Drawing.Pens.Red
' set a pen and brush for form selection
_contentXObjectTool.SelectionFormsBrush = New System.Drawing.SolidBrush(System.Drawing.Color.FromArgb(32, System.Drawing.Color.Lime))
_contentXObjectTool.SelectionFormsPen = System.Drawing.Pens.Blue
' subscribe to content XObject tool events
AddHandler _contentXObjectTool.ContentXObjectMouseEnter, New System.EventHandler(Of Vintasoft.Imaging.Pdf.UI.PdfContentXObjectEventArgs)(AddressOf ContentXObjectTool_ContentXObjectMouseEnter)
AddHandler _contentXObjectTool.ContentXObjectMouseLeave, New System.EventHandler(Of Vintasoft.Imaging.Pdf.UI.PdfContentXObjectEventArgs)(AddressOf ContentXObjectTool_ContentXObjectMouseLeave)
' set the content XObject tool as current tool
_imageViewer.VisualTool = _contentXObjectTool
End Sub
''' <summary>
''' Occurs when the mouse pointer enters the XObject on PDF page.
''' </summary>
Private Sub ContentXObjectTool_ContentXObjectMouseEnter(sender As Object, e As Vintasoft.Imaging.Pdf.UI.PdfContentXObjectEventArgs)
' add the focused XObject to a list of selected XObjects
_contentXObjectTool.SelectedXObjects.Add(e.ContentXObject)
End Sub
''' <summary>
''' Occurs when the mouse pointer leaves the XObject on PDF page.
''' </summary>
Private Sub ContentXObjectTool_ContentXObjectMouseLeave(sender As Object, e As Vintasoft.Imaging.Pdf.UI.PdfContentXObjectEventArgs)
' remove the focused XObject from a list of selected XObjects
_contentXObjectTool.SelectedXObjects.Remove(e.ContentXObject)
End Sub
End Class
/// <summary>
/// A form that allows to load PDF document into image viewer and
/// highlight focused XObject in PDF document.
/// </summary>
public partial class PdfContentXObjectToolExamples : System.Windows.Forms.Form
{
//...
Vintasoft.Imaging.UI.ImageViewer _imageViewer;
Vintasoft.Imaging.Pdf.UI.PdfContentXObjectTool _contentXObjectTool;
public PdfContentXObjectToolExamples()
{
//...
// create an instance of the PdfContentXObjectTool
_contentXObjectTool = new Vintasoft.Imaging.Pdf.UI.PdfContentXObjectTool();
// set a pen and brush for image selection
_contentXObjectTool.SelectionImagesBrush =
new System.Drawing.SolidBrush(
System.Drawing.Color.FromArgb(32, System.Drawing.Color.Blue));
_contentXObjectTool.SelectionImagesPen = System.Drawing.Pens.Red;
// set a pen and brush for form selection
_contentXObjectTool.SelectionFormsBrush =
new System.Drawing.SolidBrush(
System.Drawing.Color.FromArgb(32, System.Drawing.Color.Lime));
_contentXObjectTool.SelectionFormsPen = System.Drawing.Pens.Blue;
// subscribe to content XObject tool events
_contentXObjectTool.ContentXObjectMouseEnter +=
new System.EventHandler<Vintasoft.Imaging.Pdf.UI.PdfContentXObjectEventArgs>(ContentXObjectTool_ContentXObjectMouseEnter);
_contentXObjectTool.ContentXObjectMouseLeave +=
new System.EventHandler<Vintasoft.Imaging.Pdf.UI.PdfContentXObjectEventArgs>(ContentXObjectTool_ContentXObjectMouseLeave);
// set the content XObject tool as current tool
_imageViewer.VisualTool = _contentXObjectTool;
}
/// <summary>
/// Occurs when the mouse pointer enters the XObject on PDF page.
/// </summary>
private void ContentXObjectTool_ContentXObjectMouseEnter(
object sender,
Vintasoft.Imaging.Pdf.UI.PdfContentXObjectEventArgs e)
{
// add the focused XObject to a list of selected XObjects
_contentXObjectTool.SelectedXObjects.Add(e.ContentXObject);
}
/// <summary>
/// Occurs when the mouse pointer leaves the XObject on PDF page.
/// </summary>
private void ContentXObjectTool_ContentXObjectMouseLeave(
object sender,
Vintasoft.Imaging.Pdf.UI.PdfContentXObjectEventArgs e)
{
// remove the focused XObject from a list of selected XObjects
_contentXObjectTool.SelectedXObjects.Remove(e.ContentXObject);
}
}
Inheritance Hierarchy
Requirements
Target Platforms: .NET 7; .NET 6; .NET 5; .NET Core 3.1; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5
See Also