Aspose.Slides for Java 17.9 Release Notes

byte[] memoryFont1 = ReadAllBytesFromFile("customfonts\CustomFont1.ttf");
byte[] memoryFont2 = ReadAllBytesFromFile("customfonts\CustomFont2.ttf");

ILoadOptions loadOptions = new LoadOptions();
loadOptions.getDocumentLevelFontSources().setFontFolders(new String[] { "assets\fonts", "global\fonts" });
loadOptions.getDocumentLevelFontSources().setMemoryFonts(new byte[][] { memoryFont1, memoryFont2 });
IPresentation presentation = CreatePresentation("MyPresentation.pptx", loadOptions);
try{
    //work with the presentation
    //CustomFont1, CustomFont2 as well as fonts from assets\fonts & global\fonts folders and their subfolders are available to the presentation
}finally {
    presentation.dispose();
}

final String[] fontFolders1 = new String[] { "assets\fonts" };
final String[] fontFolders2 = new String[] { "global\fonts" };

final byte[] memoryFont1 = ReadAllBytesFromFile("customfonts\CustomFont1.ttf");
final byte[] memoryFont2 = ReadAllBytesFromFile("customfonts\CustomFont2.ttf");

final IFontSources fontSources1 = new FontSources() {{
    setFontFolders(fontFolders1);
    setMemoryFonts(new byte[][] { memoryFont1 });
}};
final IFontSources fontSources2 = new FontSources() {{
    setFontFolders(fontFolders2);
    setMemoryFonts(new byte[][] { memoryFont2 });
}};
final IPresentation presentation1 = CreatePresentation("MyPresentation1.pptx", new LoadOptions(){{setDocumentLevelFontSources(fontSources1);}});
try{
    final IPresentation presentation2 = CreatePresentation("MyPresentation2.pptx", new LoadOptions(){{setDocumentLevelFontSources(fontSources2);}});
    try {
        //work with the presentations
        //CustomFont1 as well as fonts from assets\fonts folder and its subfolders are available to presentation1 but not to presentation2
        //CustomFont2 as well as fonts from global\fonts folder and its subfolders are available to presentation2 but not to presentation1
    }finally{
        presentation2.dispose();
    }
}finally {
    presentation1.dispose();
}

If you need to add external fonts at application level and make it available to all presentations please use FonsLoader class. You can use them together like as follows:

byte[] globalMemoryFont = ReadAllBytesFromFile("customfonts\CustomFont1.ttf");
byte[] localMemoryFont = ReadAllBytesFromFile("customfonts\CustomFont2.ttf");

ILoadOptions loadOptions = new LoadOptions();
loadOptions.getDocumentLevelFontSources().setFontFolders(new String[] { "assets\fonts" });
loadOptions.getDocumentLevelFontSources().setMemoryFonts(new byte[][] { localMemoryFont });

IPresentation presentation1 = CreatePresentation("MyPresentation.pptx", loadOptions);
try{
    //work with the presentation
    //CustomFont2 as well as fonts from assets\fonts folder and its subfolders are available to the presentation
    //CustomFont1 as well as fonts from global\fonts folder and its subfolders are unavailable to the presentation
}finally {
    presentation1.dispose();
}

FontsLoader.loadExternalFonts(new String[] { "global\fonts" });
FontsLoader.loadExternalFont(globalMemoryFont);

IPresentation presentation2 = CreatePresentation("MyPresentation.pptx", loadOptions);
try{
    //work with the presentation
    //CustomFont1 and CustomFont2 as well as fonts from global\fonts and assets\fonts folders and their subfolders are available to the presentation
}finally {
    presentation2.dispose();
}

com.aspose.slides.Presentation.getPresentationText(InputStream stream, /*TextExtractionArrangingMode*/int mode)
com.aspose.slides.Presentation.getPresentationText(String file, /*TextExtractionArrangingMode*/int mode)
com.aspose.slides.Presentation.getPresentationText(InputStream stream, /*TextExtractionArrangingMode*/int mode, LoadOptions options)

Presentation pres = new Presentation("Presentation.pptx");
try {
    // Saving notes pages
    pres.save("Output.html", SaveFormat.HtmlNotes);
} finally {
    pres.dispose();
}

public class CustomHeaderAndFontsController extends EmbedAllFontsHtmlController {
    // Custom header template
    final static String Header = "<!DOCTYPE html>\n" +
            "<html>\n" +
            "<head>\n" +
            "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">\n" +
            "<meta http-equiv=\"X-UA-Compatible\" content=\"IE=9\">\n" +
            "<link rel=\"stylesheet\" type=\"text/css\" href=\"%s\">\n" +
            "</head>";


    private final String m_cssFileName;

    public CustomHeaderAndFontsController(String cssFileName) {
        m_cssFileName = cssFileName;
    }

    @Override
    public void writeDocumentStart(IHtmlGenerator generator, IPresentation presentation) {
        generator.addHtml(String.format(Header, m_cssFileName));
        writeAllFonts(generator, presentation);
    }

    @Override
    public void writeAllFonts(IHtmlGenerator generator, IPresentation presentation) {
        generator.addHtml("<!-- Embedded fonts -->");
        super.writeAllFonts(generator, presentation);
    }
}

Presentation pres = new Presentation("pres.pptx");
try{
    final CustomHeaderAndFontsController htmlController = new CustomHeaderAndFontsController("styles.css");
    HtmlOptions options = new HtmlOptions(){{
        setHtmlFormatter(HtmlFormatter.createCustomFormatter(htmlController));
    }};
    pres.save("pres.html", SaveFormat.Html, options);
}finally {
    pres.dispose();
}