While working on creating a .pptx file using ASPOSE.Slides, I encountered some issues with embedding fonts. As an alternative option, I am looking for suggestions on how to embed custom fonts in a .pptx file using Apache POI or other methods.
If you have any insights or solutions to share regarding embedding fonts inside MS PowerPoint, please feel free to provide your input.
Please avoid providing answers specific to static or local systems.
It has been mentioned previously that it is possible to achieve this without the use of Apache.
Visit the official site
To manage fonts, you can locate them in C:\Windows\Fonts directory
Hello @Bhagyashree,
One interesting feature of Aspose.Slides is the ability to embed fonts directly into presentations. To achieve this, you can experiment with the sample code provided below:
String directory = Utils.getDirectoryPath(AddEmbeddedFonts.class);
Presentation presentation = new Presentation(directory + "");
IFontData[] allFonts = presentation.getFontManager().getFonts();
IFontData[] embeddedFonts = presentation.getFontManager().getEmbeddedFonts();
for (IFontData font : exclude(allFonts, embeddedFonts))
{
presentation.getFontManager().addEmbeddedFont(font, EmbedFontCharacters.All);
}
presentation.save("output.pptx", SaveFormat.Pptx);
If you encounter any difficulties implementing this or have any concerns, please don't hesitate to reach out. I serve as a Support Developer/Advocate at Aspose.
With the upcoming release of POI 4.1.0 (expected around February 2019), Apache POI will now have the ability to embed fonts as well. The methods provided are just the beginning, as it's not a simple task of adding .ttf/.otf files.
To convert True-Type (.ttf) or Open-Type (.otf) fonts to EOT/MTX formats compatible with Office, I'm utilizing sfntly. Since sfntly classes aren't available as maven artifacts yet and importing the whole chunk into POI isn't ideal, you can clone and customize my example project from here.
If you need to add an MTX font stream to a slideshow (HSLF or XSLF), you would use:
org.apache.poi.sl.usermodel.SlideShow.addFont(InputStream fontData)
To subset fonts, you'll require the specific codepoints used, which can be extracted using:
org.apache.poi.sl.extractor.SlideShowExtractor.getCodepoints(String typeface, Boolean italic, Boolean bold)
For retrieving information about an MTX font data stream, there is a new helper class available:
org.apache.poi.common.usermodel.fonts.FontHeader
I'm not sure how to modify it using Apache, but you can simply edit it with PowerPoint...
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