XRendering AntiAliasText Property. Whether to anti-alias text. ABCpdf .NET PDF Library.

Determines whether text will be rendered with anti-aliased edges.

Anti-aliasing is a technique for using gradients of color to eliminate jagged edges when objects are drawn. The object edges are blurred to reduce pixelation.

The following example shows the effect that this parameter has on PDF rendering.

[C#]
Doc theDoc = new Doc();
theDoc.Rect.Inset(50, 50);
// Add some text
theDoc.FontSize = 48;
theDoc.Pos.String = "50 690";
int id = theDoc.AddText("Abc");
// Render images
theDoc.Rect.String = theDoc.GetInfo(id, "rect");
theDoc.Rendering.AntiAliasText = true;
Bitmap antialiasedBitmap = theDoc.Rendering.GetBitmap();
theDoc.Rendering.AntiAliasText = false;
Bitmap aliasedBitmap = theDoc.Rendering.GetBitmap();
// Add enlarged images to the pdf file
theDoc.Rect.Magnify(5, 5);
theDoc.Rect.Move(0, -300);
theDoc.AddImageBitmap(aliasedBitmap, false);
theDoc.Rect.Move(0, -300);
theDoc.AddImageBitmap(antialiasedBitmap, false);
// Annotate
theDoc.Rect.String = theDoc.MediaBox.String;
theDoc.Color.String = "255 0 0";
theDoc.FontSize = 36;
theDoc.Pos.String = "50 740";
theDoc.AddText("Original text:");
theDoc.Pos.String = "50 620";
theDoc.AddText("Magnified aliased image:");
theDoc.Pos.String = "50 320";
theDoc.AddText("Magnified antialiased image:");
// Save render of pdf files
theDoc.Rendering.AntiAliasText = true;
theDoc.Rendering.DotsPerInch = 36;
theDoc.Rendering.Save(Server.MapPath("RenderingAntiAliasText.png"));
theDoc.Clear();
[Visual Basic]
Dim theDoc As Doc = New Doc()
theDoc.Rect.Inset(50, 50)
' Add some text
theDoc.FontSize = 48
theDoc.Pos.String = "50 690"
Dim id As Integer = theDoc.AddText("Abc")
' Render images
theDoc.Rect.String = theDoc.GetInfo(id, "rect")
theDoc.Rendering.AntiAliasText = True
Dim antialiasedBitmap As Bitmap = theDoc.Rendering.GetBitmap()
theDoc.Rendering.AntiAliasText = False
Dim aliasedBitmap As Bitmap = theDoc.Rendering.GetBitmap()
' Add enlarged images to the pdf file
theDoc.Rect.Magnify(5, 5)
theDoc.Rect.Move(0, -300)
theDoc.AddImageBitmap(aliasedBitmap, False)
theDoc.Rect.Move(0, -300)
theDoc.AddImageBitmap(antialiasedBitmap, False)
' Annotate
theDoc.Rect.String = theDoc.MediaBox.String
theDoc.Color.String = "255 0 0"
theDoc.FontSize = 36
theDoc.Pos.String = "50 740"
theDoc.AddText("Original text:")
theDoc.Pos.String = "50 620"
theDoc.AddText("Magnified aliased image:")
theDoc.Pos.String = "50 320"
theDoc.AddText("Magnified antialiased image:")
' Save render of pdf files
theDoc.Rendering.AntiAliasText = True
theDoc.Rendering.DotsPerInch = 36
theDoc.Rendering.Save(Server.MapPath("RenderingAntiAliasText.png"))
theDoc.Clear()



RenderingAntiAliasText.png