Aspose.Slides for .NET 17.5 Release Notes

bool IsFooterVisible { get; }
bool IsSlideNumberVisible { get; }
bool IsDateTimeVisible { get; }

void SetFooterVisibility(bool isVisible);
void SetSlideNumberVisibility(bool isVisible);
void SetDateTimeVisibility(bool isVisible);

void SetFooterText(string text);
void SetDateTimeText(string text);

void SetFooterAndChildFootersVisibility(bool isVisible);
void SetSlideNumberAndChildSlideNumbersVisibility(bool isVisible);
void SetDateTimeAndChildDateTimesVisibility(bool isVisible);

void SetFooterAndChildFootersText(string text);
void SetDateTimeAndChildDateTimesText(string text);

IMasterSlideHeaderFooterManager IMasterSlide.HeaderFooterManager { get; }
ILayoutSlideHeaderFooterManager ILayoutSlide.HeaderFooterManager { get; }
ISlideHeaderFooterManager ISlide.HeaderFooterManager { get; }

IPresentationSlideHeaderFooterManager IPresentation.HeaderFooterManager { get; }

using (Presentation presentation = new Presentation("presentation.ppt"))
{
  IBaseSlideHeaderFooterManager headerFooterManager = presentation.Slides[0].HeaderFooterManager;
  if (!headerFooterManager.IsFooterVisible) // Property IsFooterVisible is used for indicating that a slide footer placeholder is not present.
  {
    headerFooterManager.SetFooterVisibility(true); // Method SetFooterVisibility is used for making a slide footer placeholder visible.
  }
  if (!headerFooterManager.IsSlideNumberVisible) // Property IsSlideNumberVisible is used for indicating that a slide page number placeholder is not present.
  {
    headerFooterManager.SetSlideNumberVisibility(true); // Method SetSlideNumberVisibility is used for making a slide page number placeholder visible.
  }
  if (!headerFooterManager.IsDateTimeVisible) // Property IsDateTimeVisible is used for indicating that a slide date-time placeholder is not present.
  {
    headerFooterManager.SetDateTimeVisibility(true); // Method SetFooterVisibility is used for making a slide date-time placeholder visible.
  }
  headerFooterManager.SetFooterText("Footer text"); // Method SetFooterText is used for setting text to slide footer placeholder.
  headerFooterManager.SetDateTimeText("Date and time text"); // Method SetDateTimeText is used for setting text to slide date-time placeholder.
}

using (Presentation presentation = new Presentation("presentation.ppt"))
{
  IMasterSlideHeaderFooterManager headerFooterManager = presentation.Masters[0].HeaderFooterManager;
  headerFooterManager.SetFooterAndChildFootersVisibility(true); // Method SetFooterAndChildFootersVisibility is used for making a master slide and all child footer placeholders visible.
  headerFooterManager.SetSlideNumberAndChildSlideNumbersVisibility(true); // Method SetSlideNumberAndChildSlideNumbersVisibility is used for making a master slide and all child page number placeholders visible.
  headerFooterManager.SetDateTimeAndChildDateTimesVisibility(true); // Method SetDateTimeAndChildDateTimesVisibility is used for making a master slide and all child date-time placeholders visible.
  headerFooterManager.SetFooterAndChildFootersText("Footer text"); // Method SetFooterAndChildFootersText is used for setting text to master slide and all child footer placeholders.
  headerFooterManager.SetDateTimeAndChildDateTimesText("Date and time text"); // Method SetDateTimeAndChildDateTimesText is used for setting text to master slide and all child date-time placeholders.
}

class CustomSvgShapeFormattingController : ISvgShapeFormattingController
{
  private int m_shapeIndex;
  
  public CustomSvgShapeFormattingController(int shapeStartIndex = 0)
  {
    m_shapeIndex = shapeStartIndex;
  }

  public void FormatShape(ISvgShape svgShape, IShape shape)
  {
    svgShape.Id = string.Format("shape-{0}", m_shapeIndex++);
  }
}

using (Presentation pres = new Presentation("pres.pptx"))
{
  // exclude default presentation fonts
  string[] fontNameExcludeList = { "Calibri", "Arial" };

  EmbedAllFontsHtmlController embedFontsController = new EmbedAllFontsHtmlController(fontNameExcludeList);

  HtmlOptions htmlOptionsEmbed = new HtmlOptions
  {
    HtmlFormatter = HtmlFormatter.CreateCustomFormatter(embedFontsController)
  };
  pres.Save("pres.html", SaveFormat.Html, htmlOptionsEmbed);
}

public virtual void WriteFont(
    IHtmlGenerator generator,
    IFontData originalFont,
    IFontData substitutedFont,
    string fontStyle,
    string fontWeight,
    byte[] fontData)
  {
    // todo: serialize font as you need
  }

class LinkAllFontsHtmlController : EmbedAllFontsHtmlController
{
  private readonly string m_basePath;

  public LinkAllFontsHtmlController(string[] fontNameExcludeList, string basePath)
      : base(fontNameExcludeList)

  {
    m_basePath = basePath;
  }

  public override void WriteFont(
      IHtmlGenerator generator,
      IFontData originalFont,
      IFontData substitutedFont,
	  string fontStyle,
	  string fontWeight,
	  byte[] fontData)
  {
    string fontName = substitutedFont == null ? originalFont.FontName : substitutedFont.FontName;
    string path = string.Format("{0}.woff", fontName); // some path sanitaze may be needed
    File.WriteAllBytes(Path.Combine(m_basePath, path), fontData);

    generator.AddHtml("<style>");
    generator.AddHtml("@font-face { ");
    generator.AddHtml(string.Format("font-family: '{0}'; ", fontName));
    generator.AddHtml(string.Format("src: url('{0}')", path));
    generator.AddHtml(" }");
    generator.AddHtml("</style>");
  }
}