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With auto-fit feature, you can automatically reduce the font size of text to fit a shape, or you can shrink or enlarge shape to fit the exact size of your text. This article will show you how to auto-fit text or shape using Spire.Presentation with C#, VB.NET.
Step 1: Create an instance of Presentation class.
Presentation presentation = new Presentation();
Step 2: Insert a shape, and set the AutofitType property to Normal, which means the text automatically shrinks to fit shape.
IAutoShape textShape1 = presentation.Slides[0].Shapes.AppendShape(ShapeType.Rectangle, new RectangleF(50, 50, 150, 80)); textShape1.TextFrame.Text = "Shrink text to fit shape. Shrink text to fit shape. Shrink text to fit shape. Shrink text to fit shape."; textShape1.TextFrame.AutofitType = TextAutofitType.Normal;
Step 3: Insert a shape, and set the AutofitType property to Shape, which means the shape size automatically decreases or increases to fit text.
IAutoShape textShape2 = presentation.Slides[0].Shapes.AppendShape(ShapeType.Rectangle, new RectangleF(350, 50, 150, 80)); textShape2.TextFrame.Text = "Resize shape to fit text."; textShape2.TextFrame.AutofitType = TextAutofitType.Shape;
Step 4: Save the file.
presentation.SaveToFile("output.pptx", FileFormat.Pptx2013);
Output:
Full Code:
using Spire.Presentation;
using System.Drawing;
namespace AutofitinPPT
{
class Program
{
static void Main(string[] args)
{
Presentation presentation = new Presentation();
IAutoShape textShape1 = presentation.Slides[0].Shapes.AppendShape(ShapeType.Rectangle, new RectangleF(50, 50, 150, 80));
textShape1.TextFrame.Text = "Shrink text to fit shape. Shrink text to fit shape. Shrink text to fit shape. Shrink text to fit shape.";
textShape1.TextFrame.AutofitType = TextAutofitType.Normal;
IAutoShape textShape2 = presentation.Slides[0].Shapes.AppendShape(ShapeType.Rectangle, new RectangleF(350, 50, 150, 80));
textShape2.TextFrame.Text = "Resize shape to fit text.";
textShape2.TextFrame.AutofitType = TextAutofitType.Shape;
presentation.SaveToFile("output.pptx", FileFormat.Pptx2013);
}
}
}
Imports Spire.Presentation
Imports System.Drawing
Namespace AutofitinPPT
Class Program
Private Shared Sub Main(args As String())
Dim presentation As New Presentation()
Dim textShape1 As IAutoShape = presentation.Slides(0).Shapes.AppendShape(ShapeType.Rectangle, New RectangleF(50, 50, 150, 80))
textShape1.TextFrame.Text = "Shrink text to fit shape. Shrink text to fit shape. Shrink text to fit shape. Shrink text to fit shape."
textShape1.TextFrame.AutofitType = TextAutofitType.Normal
Dim textShape2 As IAutoShape = presentation.Slides(0).Shapes.AppendShape(ShapeType.Rectangle, New RectangleF(350, 50, 150, 80))
textShape2.TextFrame.Text = "Resize shape to fit text."
textShape2.TextFrame.AutofitType = TextAutofitType.Shape
presentation.SaveToFile("output.pptx", FileFormat.Pptx2013)
End Sub
End Class
End Namespace
In the previous article, we have demonstrated how to explode a pie chart via Spire.XLS. This article we will explain how to explode a doughnut chart in C#.
When we need to explode a doughnut chart, we can set the chart type as DoughnutExploded when we create a doughnut chart from scratch. For the existing doughnut chart, we can easily change the chart type to explode the doughnut chart.
Step 1: Create an instance of Excel workbook and load the document from file.
Workbook workbook = new Workbook();
workbook.LoadFromFile("DoughnutChart.xlsx",ExcelVersion.Version2010);
Step 2: Get the first worksheet from the sample workbook.
Worksheet sheet = workbook.Worksheets[0];
Step 3: Get the first chart from the first worksheet.
Chart chart = sheet.Charts[0];
Step 4: Set the chart type as DoughnutExploded to explode the doughnut chart.
chart.ChartType = ExcelChartType.DoughnutExploded;
Step 5: Save the document to file.
workbook.SaveToFile("ExplodedDoughnutChart.xlsx", ExcelVersion.Version2010);
Effective screenshot of the explode doughnut chart:
Full codes of how to explode a doughnut chart:
using Spire.Xls;
namespace ExplodeDoughnut
{
class Program
{
static void Main(string[] args)
{
Workbook workbook = new Workbook();
workbook.LoadFromFile("DoughnutChart.xlsx", ExcelVersion.Version2010);
Worksheet sheet = workbook.Worksheets[0];
Chart chart = sheet.Charts[0];
chart.ChartType = ExcelChartType.DoughnutExploded;
workbook.SaveToFile("ExplodedDoughnutChart.xlsx", ExcelVersion.Version2010);
}
}
}
We often need to resize images to a desired size after we insert them into a Word document. This article demonstrates how to programmatically resize images in a Word document using Spire.Doc and C#.
Below is the screenshot of the example document we used for demonstration:
Detail steps:
Step 1: Load the Word document.
Document document = new Document("Input.docx");
Step 2: Get the first section and the first paragraph in the section.
Section section = document.Sections[0]; Paragraph paragraph = section.Paragraphs[0];
Step 3: Resize images in the paragraph.
foreach (DocumentObject docObj in paragraph.ChildObjects)
{
if (docObj is DocPicture)
{
DocPicture picture = docObj as DocPicture;
picture.Width = 50f;
picture.Height = 50f;
}
}
Step 4: Save the document.
document.SaveToFile("ResizeImages.docx");
Output:
Full code:
using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
namespace Resize
{
class Program
{
static void Main(string[] args)
{
Document document = new Document("Input.docx");
Section section = document.Sections[0];
Paragraph paragraph = section.Paragraphs[0];
foreach (DocumentObject docObj in paragraph.ChildObjects)
{
if (docObj is DocPicture)
{
DocPicture picture = docObj as DocPicture;
picture.Width = 50f;
picture.Height = 50f;
}
}
document.SaveToFile("ResizeImages.docx");
}
}
}
