Aspose.Slides for .NET是一個獨特的演示處理API，它允許應用程序讀取、寫入、修改和轉換PowerPoint演示文稿。作為一個獨立的API，它提供了管理PowerPoint關鍵功能的功能，如管理文本、形狀、表格和動畫、向幻燈片添加音頻和視頻、預覽幻燈片等，而不需要Microsoft PowerPoint。

Aspose.Slides for .NET迎來2020年9月更新v20.9，實現自主的跨平臺3D引擎，在SVG中生成支持單個tspan的Id屬性，修復保存.ppt文件時發生異常等諸多問題。（點擊下方按鈕即可下載）

下載Aspose.Slides最新版

（安裝包僅提供部分功能，并設置限制，如需試用完整功能請）

具體更新內容

公共API更改

添加3D支持

在Aspose.Slides 20.9 中宣布了自己的跨平臺3D引擎。新的3D引擎可以導出和柵格化具有3D效果的形狀和文本。

在以前的版本中，已應用3D效果的“幻燈片”形狀被渲染為平坦。但是，現在可以使用成熟的3D渲染形狀。此外，現在可以通過Slides公共API創建具有3D效果的形狀：

using (Presentation pres = new Presentation())
{
    IAutoShape shape = pres.Slides[0].Shapes.AddAutoShape(ShapeType.Rectangle, 200, 150, 200, 200);
    shape.TextFrame.Text = "3D";
    shape.TextFrame.Paragraphs[0].ParagraphFormat.DefaultPortionFormat.FontHeight = 64;
    
    shape.ThreeDFormat.Camera.CameraType = CameraPresetType.OrthographicFront;
    shape.ThreeDFormat.Camera.SetRotation(20, 30, 40);
    shape.ThreeDFormat.LightRig.LightType = LightRigPresetType.Flat;
    shape.ThreeDFormat.LightRig.Direction = LightingDirection.Top;
    shape.ThreeDFormat.Material = MaterialPresetType.Powder; 
    shape.ThreeDFormat.ExtrusionHeight = 100;
    shape.ThreeDFormat.ExtrusionColor.Color = Color.Blue;
    
    pres.Slides[0].GetThumbnail(2, 2).Save("sample_3d.png");
    pres.Save("sandbox_3d.pptx", SaveFormat.Pptx);
}

渲染的縮略圖如下所示：

添加IBulletFormatEffectiveData.FillFormat屬性

新的FillFormat屬性已添加到IBulletFormatEffectiveData接口。使用此屬性可以獲取段落項目符號填充的有效值。

下面的代碼段演示了如何檢索項目符號的填充有效數據：

using (Presentation pres = new Presentation("SomePresentation.pptx"))
{
    // Assume that the first shape on the first slide is AutoShape with some text...
    // Output information about text paragraphs' bullets
    AutoShape autoShape = (AutoShape)pres.Slides[0].Shapes[0];
    foreach (Paragraph para in autoShape.TextFrame.Paragraphs)
    {
        IBulletFormatEffectiveData bulletFormatEffective = para.ParagraphFormat.Bullet.GetEffective();
        Console.WriteLine("Bullet type: " + bulletFormatEffective.Type);
        if (bulletFormatEffective.Type != BulletType.None)
        {
            Console.WriteLine("Bullet fill type: " + bulletFormatEffective.FillFormat.FillType);
            switch (bulletFormatEffective.FillFormat.FillType)
            {
                case FillType.Solid:
                    Console.WriteLine("Solid fill color: " + bulletFormatEffective.FillFormat.SolidFillColor);
                    break;
                case FillType.Gradient:
                    Console.WriteLine("Gradient stops count: " + bulletFormatEffective.FillFormat.GradientFormat.GradientStops.Count);
                    foreach (IGradientStopEffectiveData gradStop in bulletFormatEffective.FillFormat.GradientFormat.GradientStops)
                        Console.WriteLine(gradStop.Position + ": " + gradStop.Color);
                    break;
                case FillType.Pattern:
                    Console.WriteLine("Pattern style: " + bulletFormatEffective.FillFormat.PatternFormat.PatternStyle);
                    Console.WriteLine("Fore color: " + bulletFormatEffective.FillFormat.PatternFormat.ForeColor);
                    Console.WriteLine("Back color: " + bulletFormatEffective.FillFormat.PatternFormat.BackColor);
                    break;
            }
        }
        Console.WriteLine();
    }
}

Aspose.Slides.Export.Web成員應用程序示例

下面的代碼示例演示了Aspose.Slides.Export.Web成員的實際應用。它代表Presentation類的擴展，該擴展創建并設置一個WebDocument對象，該對象將演示文稿保存為HTML。請注意，轉換模板未包含在示例中。

public static class PresentationExtensions
{
    public static WebDocument ToSinglePageWebDocument(
        this Presentation pres,
        WebDocumentOptions options,
        string templatesPath,
        string outputPath)
    {
        WebDocument document = new WebDocument(options);

        SetGlobals(document, options, outputPath);
        document.Global.Put("slidesPath", outputPath);
        document.Global.Put("stylesPath", outputPath);

        document.AddCommonInputOutput(options, templatesPath, outputPath, pres);

        return document;
    }
    
    private static void SetGlobals(WebDocument document, WebDocumentOptions options, string outputPath)
    {
        string imagesPath = Path.Combine(outputPath, "images");
        string fontsPath = Path.Combine(outputPath, "fonts");
        string mediaPath = Path.Combine(outputPath, "media");

        document.Global.Put("slideMargin", 10);
        document.Global.Put("embedImages", options.EmbedImages);
        document.Global.Put("imagesPath", imagesPath);
        document.Global.Put("fontsPath", fontsPath);
        document.Global.Put("mediaPath", mediaPath);
    }
    
    private static void AddCommonInputOutput(this WebDocument document, WebDocumentOptions options, string templatesPath, string outputPath, Presentation pres)
    {
        string stylesPath = document.Global.Get<string>("stylesPath");

        document.Input.AddTemplate<Presentation>("styles-pres", Path.Combine(templatesPath, @"styles\pres.css"));
        document.Input.AddTemplate<MasterSlide>("styles-master", Path.Combine(templatesPath, @"styles\master.css"));

        document.Input.AddTemplate<Presentation>("index", Path.Combine(templatesPath, "index.html"));
        document.Input.AddTemplate<Slide>("slide", Path.Combine(templatesPath, "slide.html"));
        document.Input.AddTemplate<AutoShape>("autoshape", Path.Combine(templatesPath, "autoshape.html"));
        document.Input.AddTemplate<TextFrame>("textframe", Path.Combine(templatesPath, "textframe.html"));
        document.Input.AddTemplate<Paragraph>("paragraph", Path.Combine(templatesPath, "paragraph.html"));
        document.Input.AddTemplate<Paragraph>("bullet", Path.Combine(templatesPath, "bullet.html"));
        document.Input.AddTemplate<Portion>("portion", Path.Combine(templatesPath, "portion.html"));

        document.Input.AddTemplate<VideoFrame>("videoframe", Path.Combine(templatesPath, "videoframe.html"));

        document.Input.AddTemplate<PictureFrame>("pictureframe", Path.Combine(templatesPath, "pictureframe.html"));
        document.Input.AddTemplate<Table>("table", Path.Combine(templatesPath, "table.html"));
        document.Input.AddTemplate<Shape>("shape", Path.Combine(templatesPath, "shape.html"));

        document.Output.Add(Path.Combine(outputPath, "index.html"), "index", pres);
        document.Output.Add(Path.Combine(stylesPath, "pres.css"), "styles-pres", pres);
        document.Output.Add(Path.Combine(stylesPath, "master.css"), "styles-master", (MasterSlide)pres.Masters[0]);

        if (!options.EmbedImages)
        {
            string imagesPath = document.Global.Get<string>("imagesPath");
            document.AddImagesOutput(imagesPath, pres);
        }
    }
    
    private static void AddImagesOutput(this WebDocument document, string outputPath, Presentation pres)
    {
        for (int index = 0; index < pres.Images.Count; index++)
        {
            IPPImage image = pres.Images[index];
            string path;
            string ext;

            if (image.ContentType == "image/x-emf"
                || image.ContentType == "image/x-wmf") //save metafile as PNG to make it supported by various browsers  
            {
                ext = "png";
                path = Path.Combine(outputPath, string.Format("image{0}.{1}", index, ext));

                var bitmap = ImageHelper.MetafileToBitmap(image);
                document.Output.Add(path, new ThumbnailOutputFile(bitmap), image);

                continue;
            }

            ext = MimeTypesMap.GetExtension(image.ContentType);
            path = Path.Combine(outputPath, string.Format("image{0}.{1}", index, ext));

            document.Output.Add(path, image);
        }
    }
}