获取 PDF 文件的查看器偏好设置

获取现有 PDF 文件的查看器偏好设置

ViewerPreference 类表示 PDF 文件的显示模式；例如，将文档窗口定位在屏幕中央，隐藏查看器应用程序的菜单栏等。

为了读取设置，我们使用 GetViewerPreference 类。此方法返回一个变量，其中保存了所有设置。

.NET Core 3.1

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

    // Open PDF document
    using (var document = new Aspose.Pdf.Document(dataDir + "SetViewerPreference.pdf"))
    {
        // Instantiate PdfContentEditor object
        var editor = new Aspose.Pdf.Facades.PdfContentEditor(document);

        // Get Viewer Preferences
        var preferences = editor.GetViewerPreference();

        if ((preferences & Aspose.Pdf.Facades.ViewerPreference.CenterWindow) != 0)
        {
            Console.WriteLine("CenterWindow");
        }

        if ((preferences & Aspose.Pdf.Facades.ViewerPreference.HideMenubar) != 0)
        {
            Console.WriteLine("Menu bar hided");
        }

        if ((preferences & Aspose.Pdf.Facades.ViewerPreference.PageModeFullScreen) != 0)
        {
            Console.WriteLine("Page Mode Full Screen");
        }
    }
}

.NET 8

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

    // Open PDF document
    using var document = new Aspose.Pdf.Document(dataDir + "SetViewerPreference.pdf");

    // Instantiate PdfContentEditor object
    var editor = new Aspose.Pdf.Facades.PdfContentEditor(document);

    // Get Viewer Preferences
    var preferences = editor.GetViewerPreference();

    if ((preferences & Aspose.Pdf.Facades.ViewerPreference.CenterWindow) != 0)
    {
        Console.WriteLine("CenterWindow");
    }

    if ((preferences & Aspose.Pdf.Facades.ViewerPreference.HideMenubar) != 0)
    {
        Console.WriteLine("Menu bar hided");
    }

    if ((preferences & Aspose.Pdf.Facades.ViewerPreference.PageModeFullScreen) != 0)
    {
        Console.WriteLine("Page Mode Full Screen");
    }
}