将椭圆对象添加到PDF文件

以下代码片段也适用于Aspose.PDF.Drawing库。

添加椭圆对象

Aspose.PDF for .NET支持将椭圆对象添加到PDF文档中。它还提供用特定颜色填充椭圆对象的功能。

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void Ellipse()
{
    // The path to the document directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Images();

    // Create PDF document
    using (var document = new Aspose.Pdf.Document())
    {
        // Add page
        var page = document.Pages.Add();

        // Create Drawing object with certain dimensions
        var graph = new Aspose.Pdf.Drawing.Graph(400, 400);

        // Set border for Drawing object
        var borderInfo = new Aspose.Pdf.BorderInfo(Aspose.Pdf.BorderSide.All, Aspose.Pdf.Color.Green);
        graph.Border = borderInfo;

        // Create first ellipse with specified coordinates and radii
        var ellipse1 = new Aspose.Pdf.Drawing.Ellipse(150, 100, 120, 60)
        {
            GraphInfo = { Color = Aspose.Pdf.Color.GreenYellow },
            Text = new Aspose.Pdf.Text.TextFragment("Ellipse")
        };
        graph.Shapes.Add(ellipse1);

        // Create second ellipse with different dimensions and color
        var ellipse2 = new Aspose.Pdf.Drawing.Ellipse(50, 50, 18, 300)
        {
            GraphInfo = { Color = Aspose.Pdf.Color.DarkRed }
        };
        graph.Shapes.Add(ellipse2);

        // Add Graph object to paragraphs collection of page
        page.Paragraphs.Add(graph);

        // Save PDF document
        document.Save(dataDir + "DrawingEllipse_out.pdf");
    }
}

创建填充椭圆对象

以下代码片段演示如何添加一个用颜色填充的椭圆对象。

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void EllipseFilled()
{
    // The path to the document directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Images();

    // Create PDF document
    using (var document = new Aspose.Pdf.Document())
    {
        // Add page
        var page = document.Pages.Add();

        // Create Drawing object with certain dimensions
        var graph = new Aspose.Pdf.Drawing.Graph(400, 400);

        // Set border for Drawing object
        var borderInfo = new Aspose.Pdf.BorderInfo(Aspose.Pdf.BorderSide.All, Aspose.Pdf.Color.Green);
        graph.Border = borderInfo;

        // Create first ellipse and set its fill color
        var ellipse1 = new Aspose.Pdf.Drawing.Ellipse(100, 100, 120, 180)
        {
            GraphInfo = 
            { 
                FillColor = Aspose.Pdf.Color.GreenYellow 
            }
        };
        graph.Shapes.Add(ellipse1);

        // Create second ellipse and set its fill color
        var ellipse2 = new Aspose.Pdf.Drawing.Ellipse(200, 150, 180, 120)
        {
            GraphInfo = 
            { 
                FillColor = Aspose.Pdf.Color.DarkRed 
            }
        };
        graph.Shapes.Add(ellipse2);

        // Add Graph object to paragraphs collection of page
        page.Paragraphs.Add(graph);

        // Save PDF document
        document.Save(dataDir + "DrawingEllipse_out.pdf");
    }
}

在椭圆内添加文本

Aspose.PDF for .NET支持在图形对象内添加文本。图形对象的文本属性提供设置图形对象文本的选项。以下代码片段演示如何在矩形对象内添加文本。

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void EllipseWithText()
{
    // The path to the document directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Images();

    // Create PDF document
    using (var document = new Aspose.Pdf.Document())
    {
        // Add page
        var page = document.Pages.Add();

        // Create Drawing object with certain dimensions
        var graph = new Aspose.Pdf.Drawing.Graph(400, 400);

        // Set border for Drawing object
        var borderInfo = new Aspose.Pdf.BorderInfo(Aspose.Pdf.BorderSide.All, Aspose.Pdf.Color.Green);
        graph.Border = borderInfo;

        // Create TextFragment for adding text to shapes
        var textFragment = new Aspose.Pdf.Text.TextFragment("Ellipse")
        {
            TextState =
            {
                Font = Aspose.Pdf.Text.FontRepository.FindFont("Helvetica"),
                FontSize = 24
            }
        };

        // Create first ellipse and set properties
        var ellipse1 = new Aspose.Pdf.Drawing.Ellipse(100, 100, 120, 180)
        {
            GraphInfo = 
            { 
                FillColor = Aspose.Pdf.Color.GreenYellow 
            },
            Text = textFragment
        };
        graph.Shapes.Add(ellipse1);

        // Create second ellipse and set properties
        var ellipse2 = new Aspose.Pdf.Drawing.Ellipse(200, 150, 180, 120)
        {
            GraphInfo = 
            { 
                FillColor = Aspose.Pdf.Color.DarkRed 
            },
            Text = textFragment
        };
        graph.Shapes.Add(ellipse2);

        // Add Graph object to paragraphs collection of page
        page.Paragraphs.Add(graph);

        // Save PDF document
        document.Save(dataDir + "DrawingEllipseText_out.pdf");
    }
}