Class StreamFontSource

  • All Implemented Interfaces:
    com.aspose.words.internal.zzMX, com.aspose.words.internal.zzMV
    public abstract class StreamFontSource 
    extends FontSourceBase

Base class for user-defined stream font source.

In order to use the stream font source you should create a derived class from the StreamFontSource and provide implementation of the openFontDataStream() method.

openFontDataStream() method could be called several times. For the first time it will be called when Aspose.Words scans the provided font sources to get the list of available fonts. Later it may be called if the font is used in the document to parse the font data and to embed the font data to some output formats.

StreamFontSource may be useful because it allows to load the font data only when it is required and not to store it in the memory for the FontSettings lifetime.

Property Getters/Setters Summary
Returns the font source priority.
Returns the type of the font source. The value of the property is FontSourceType integer constant.
Method Summary
Returns list of fonts available via this source.
abstract System.IO.StreamopenFontDataStream()
This method should open the stream with font data on demand.

    • Property Getters/Setters Detail

      • getPriority

        public int getPriority()
        Returns the font source priority.

        This value is used when there are fonts with the same family name and style in different font sources. In this case Aspose.Words selects the font from the source with the higher priority value.

        The default value is 0.


        Shows how to create a file font source.
        Document doc = new Document();
        // Create a font settings object for our document
        doc.setFontSettings(new FontSettings());
        // Create a font source from a file in our system
        FileFontSource fileFontSource = new FileFontSource(getMyDir() + "Alte DIN 1451 Mittelschrift.ttf", 0);
        // Import the font source into our document
        doc.getFontSettings().setFontsSources(new FontSourceBase[]{fileFontSource});
        Assert.assertEquals(fileFontSource.getFilePath(), getMyDir() + "Alte DIN 1451 Mittelschrift.ttf");
        Assert.assertEquals(fileFontSource.getType(), FontSourceType.FONT_FILE);
        Assert.assertEquals(fileFontSource.getPriority(), 0);
      • getType

        public int getType()
        Returns the type of the font source. The value of the property is FontSourceType integer constant.
    • Method Detail

      • getAvailableFonts

        public java.util.ArrayList<PhysicalFontInfo> getAvailableFonts()
        Returns list of fonts available via this source.


        Shows how to get available fonts and information about them.
        // Add a new folder source which will instruct Aspose.Words to search the following folder for fonts
        FontSourceBase[] folderFontSource = {new FolderFontSource(getFontsDir(), true)};
        for (PhysicalFontInfo fontInfo : folderFontSource[0].getAvailableFonts()) {
            System.out.println(MessageFormat.format("FontFamilyName : {0}", fontInfo.getFontFamilyName()));
            System.out.println(MessageFormat.format("FullFontName  : {0}", fontInfo.getFullFontName()));
            System.out.println(MessageFormat.format("Version  : {0}", fontInfo.getVersion()));
            System.out.println(MessageFormat.format("FilePath : {0}\n", fontInfo.getFilePath()));
      • openFontDataStream

        public abstract System.IO.Stream openFontDataStream()
                                               throws java.lang.Exception
        This method should open the stream with font data on demand. The stream will be closed after reading. There is no need to close it explicitly.
        Font data stream.