Aspose.Pdf also allows to set the vertical alignment of the Text Segments in the Text paragraph. This feature is required sometimes when we need to write some Chemical Formula, Company Trade Marks, Symbols, Mathematical Figures with Powers etc.
There are two kinds of vertical alignments of Text Segments supported by Aspose.Pdf as follows:
- Topline
- Baseline
To have a clear distinction between Baseline and Topline alignments, follow the figure below:
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TextInfo class is vital to text format settings having all properties and methods required to control text formatting. Vertical alignment of Text Segments is also controlled by setting the IsBaseline property (of TextInfo class) to true or false.
To align the Text Segments vertical, follow these 2 points:
- To Topline the Text Segment , we set IsBaseline property to false.
- To Baseline the Text Segment , we set IsBaseline property to true.
The default value of IsBaseline property is true. It means that by default, all Text Segments are baselined. So, to Topline the Text Segment , we have given an example below for your reference.
Code Snippet
[C#]
//Instantiate Pdf object by calling its empty constructor
Pdf pdf1 = new Pdf();
//Create a section in the Pdf object
Section sec1 = pdf1.Sections.Add();
//Create a new text paragraph with an initial text segment "Aspose"
Text text1 = new Text(sec1,"Aspose");
//Add the text paragraph to the section
sec1.Paragraphs.Add(text1);
//Create a new text segment into the text paragraph
Segment seg2 = text1.Segments.Add("TM");
//Set the vertical alignment of text segment "seg2" to Topline by setting
//IsBaseline property ot seg2.TextInfo to true
seg2.TextInfo.IsBaseline=false;
//Save the Pdf
pdf1.Save(...);
[VB.NET]
'Instantiate Pdf object by calling its empty constructor
Dim pdf1 As Pdf = New Pdf()
'Create a section in the Pdf object
Dim sec1 As Section = pdf1.Sections.Add()
'Create a new text paragraph with an initial text segment "Aspose"
Dim text1 As Text = New Text(sec1,"Aspose")
'Add the text paragraph to the section
sec1.Paragraphs.Add(text1)
'Create a new text segment into the text paragraph
Dim seg2 As Segment = text1.Segments.Add("TM")
'Set the vertical alignment of text segment "seg2" to Topline by setting
'IsBaseline property ot seg2.TextInfo to true
seg2.TextInfo.IsBaseline=false
'Save the Pdf
pdf1.Save(...)
[JAVA]
//Instantiate Pdf instance by calling its empty constructor
Pdf pdf1 = new Pdf();
//Create a new section in the Pdf object
Section sec1 = pdf1.getSections().add();
//Create a new text paragraph with an initial text segment "Aspose"
Text text1 = new Text(sec1,"Aspose");
//Add the text paragraph to the section
sec1.getParagraphs().add(text1);
//Create a new text segment into the text paragraph
Segment seg2 = text1.getSegments().add("TM");
//Set the vertical alignment of text segment "seg2" to Topline by setting
//BaseLineOffset a positive value
seg2.getTextInfo().setBaseLineOffset(3);
[XML]
<?xml version="1.0" encoding="utf-8" ?>
<Pdf xmlns="Aspose.Pdf">
<Section>
<Text>
<Segment>Aspose</Segment>
<Segment IsBaseline="false">TM</Segment>
</Text>
</Section>
</Pdf>