PDF内のテキストをC#で回転させる

次のコードスニペットは、Aspose.PDF.Drawingライブラリでも動作します。

回転プロパティを使用してPDF内のテキストを回転させる

TextFragmentクラスの回転プロパティを使用することで、さまざまな角度でテキストを回転させることができます。テキストの回転は、文書生成のさまざまなシナリオで使用できます。要件に応じてテキストを回転させるために、度数法で回転角を指定できます。テキスト回転を実装できるさまざまなシナリオを以下に示します。

TextFragmentとTextBuilderを使用して回転を実装する

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

    // Create PDF document
    using (var document = new Aspose.Pdf.Document())
    {
        // Get particular page
        var page = document.Pages.Add();
        // Create text fragment
        var textFragment1 = new Aspose.Pdf.Text.TextFragment("main text");
        textFragment1.Position = new Aspose.Pdf.Text.Position(100, 600);
        // Set text properties
        textFragment1.TextState.FontSize = 12;
        textFragment1.TextState.Font = Aspose.Pdf.Text.FontRepository.FindFont("TimesNewRoman");
        // Create rotated text fragment
        var textFragment2 = new Aspose.Pdf.Text.TextFragment("rotated text");
        textFragment2.Position = new Aspose.Pdf.Text.Position(200, 600);
        // Set text properties
        textFragment2.TextState.FontSize = 12;
        textFragment2.TextState.Font = Aspose.Pdf.Text.FontRepository.FindFont("TimesNewRoman");
        textFragment2.TextState.Rotation = 45;
        // Create rotated text fragment
        var textFragment3 = new Aspose.Pdf.Text.TextFragment("rotated text");
        textFragment3.Position = new Aspose.Pdf.Text.Position(300, 600);
        // Set text properties
        textFragment3.TextState.FontSize = 12;
        textFragment3.TextState.Font = Aspose.Pdf.Text.FontRepository.FindFont("TimesNewRoman");
        textFragment3.TextState.Rotation = 90;
        // create TextBuilder object
        var textBuilder = new Aspose.Pdf.Text.TextBuilder(page);
        // Append the text fragment to the PDF page
        textBuilder.AppendText(textFragment1);
        textBuilder.AppendText(textFragment2);
        textBuilder.AppendText(textFragment3);
        // Save PDF document
        document.Save(dataDir + "RotateTextInsidePDF_out.pdf");
    }
}

TextParagraphとTextBuilderを使用して回転を実装する（回転したフラグメント）

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

    // Create PDF document
    using (var document = new Aspose.Pdf.Document())
    {
        // Get particular page
        var page = document.Pages.Add();
        var paragraph = new Aspose.Pdf.Text.TextParagraph();
        paragraph.Position = new Aspose.Pdf.Text.Position(200, 600);
        // Create text fragment
        var textFragment1 = new Aspose.Pdf.Text.TextFragment("rotated text");
        // Set text properties
        textFragment1.TextState.FontSize = 12;
        textFragment1.TextState.Font = Aspose.Pdf.Text.FontRepository.FindFont("TimesNewRoman");
        // Set rotation
        textFragment1.TextState.Rotation = 45;
        // Create text fragment
        var textFragment2 = new Aspose.Pdf.Text.TextFragment("main text");
        // Set text properties
        textFragment2.TextState.FontSize = 12;
        textFragment2.TextState.Font = Aspose.Pdf.Text.FontRepository.FindFont("TimesNewRoman");
        // Create text fragment
        var textFragment3 = new Aspose.Pdf.Text.TextFragment("another rotated text");
        // Set text properties
        textFragment3.TextState.FontSize = 12;
        textFragment3.TextState.Font = Aspose.Pdf.Text.FontRepository.FindFont("TimesNewRoman");
        // Set rotation
        textFragment3.TextState.Rotation = -45;
        // Append the text fragments to the paragraph
        paragraph.AppendLine(textFragment1);
        paragraph.AppendLine(textFragment2);
        paragraph.AppendLine(textFragment3);
        // Create TextBuilder object
        var textBuilder = new Aspose.Pdf.Text.TextBuilder(page);
        // Append the text paragraph to the PDF page
        textBuilder.AppendParagraph(paragraph);
        // Save PDF document
        document.Save(dataDir + "RotateTextInsidePDF_out.pdf");
    }
}

TextFragmentとPage.Paragraphsを使用して回転を実装する

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

    // Create PDF document
    using (var document = new Aspose.Pdf.Document())
    {
        // Get particular page
        var page = document.Pages.Add();
        // Create text fragment
        var textFragment1 = new Aspose.Pdf.Text.TextFragment("main text");
        // Set text properties
        textFragment1.TextState.FontSize = 12;
        textFragment1.TextState.Font = Aspose.Pdf.Text.FontRepository.FindFont("TimesNewRoman");
        // Create text fragment
        var textFragment2 = new Aspose.Pdf.Text.TextFragment("rotated text");
        // Set text properties
        textFragment2.TextState.FontSize = 12;
        textFragment2.TextState.Font = Aspose.Pdf.Text.FontRepository.FindFont("TimesNewRoman");
        // Set rotation
        textFragment2.TextState.Rotation = 315;
        // Create text fragment
        var textFragment3 = new Aspose.Pdf.Text.TextFragment("rotated text");
        // Set text properties
        textFragment3.TextState.FontSize = 12;
        textFragment3.TextState.Font = Aspose.Pdf.Text.FontRepository.FindFont("TimesNewRoman");
        // Set rotation
        textFragment3.TextState.Rotation = 270;
        page.Paragraphs.Add(textFragment1);
        page.Paragraphs.Add(textFragment2);
        page.Paragraphs.Add(textFragment3);
        // Save PDF document
        document.Save(dataDir + "RotateTextInsidePDF_out.pdf");
    }
}

TextParagraphとTextBuilderを使用して回転を実装する（全体の段落を回転）

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

    // Create PDF document
    using (var document = new Aspose.Pdf.Document())
    {
        // Get particular page
        var page = document.Pages.Add();
        for (int i = 0; i < 4; i++)
        {
            var paragraph = new Aspose.Pdf.Text.TextParagraph();
            paragraph.Position = new Aspose.Pdf.Text.Position(200, 600);
            // Specify rotation
            paragraph.Rotation = i * 90 + 45;
            // Create text fragment
            var textFragment1 = new Aspose.Pdf.Text.TextFragment("Paragraph Text");
            // Create text fragment
            textFragment1.TextState.FontSize = 12;
            textFragment1.TextState.Font = Aspose.Pdf.Text.FontRepository.FindFont("TimesNewRoman");
            textFragment1.TextState.BackgroundColor = Aspose.Pdf.Color.LightGray;
            textFragment1.TextState.ForegroundColor = Aspose.Pdf.Color.Blue;
            // Create text fragment
            var textFragment2 = new Aspose.Pdf.Text.TextFragment("Second line of text");
            // Set text properties
            textFragment2.TextState.FontSize = 12;
            textFragment2.TextState.Font = Aspose.Pdf.Text.FontRepository.FindFont("TimesNewRoman");
            textFragment2.TextState.BackgroundColor = Aspose.Pdf.Color.LightGray;
            textFragment2.TextState.ForegroundColor = Aspose.Pdf.Color.Blue;
            // Create text fragment
            var textFragment3 = new Aspose.Pdf.Text.TextFragment("And some more text...");
            // Set text properties
            textFragment3.TextState.FontSize = 12;
            textFragment3.TextState.Font = Aspose.Pdf.Text.FontRepository.FindFont("TimesNewRoman");
            textFragment3.TextState.BackgroundColor = Aspose.Pdf.Color.LightGray;
            textFragment3.TextState.ForegroundColor = Aspose.Pdf.Color.Blue;
            textFragment3.TextState.Underline = true;
            paragraph.AppendLine(textFragment1);
            paragraph.AppendLine(textFragment2);
            paragraph.AppendLine(textFragment3);
            // Create TextBuilder object
            var textBuilder = new Aspose.Pdf.Text.TextBuilder(page);
            // Append the text fragment to the PDF page
            textBuilder.AppendParagraph(paragraph);
        }
        // Save PDF document
        document.Save(dataDir + "RotateTextInsidePDF_out.pdf");
    }
}