MemoryFontSource

MemoryFontSource(byte[])

Ctor.

public MemoryFontSource(byte[] fontData)
ParameterTypeDescription
fontDataByte[]Binary font data.

Examples

Shows how to use a byte array with data from a font file as a font source.

byte[] fontBytes = File.ReadAllBytes(MyDir + "Alte DIN 1451 Mittelschrift.ttf");
MemoryFontSource memoryFontSource = new MemoryFontSource(fontBytes, 0);

Document doc = new Document();
doc.FontSettings = new FontSettings();
doc.FontSettings.SetFontsSources(new FontSourceBase[] {memoryFontSource});

Assert.AreEqual(FontSourceType.MemoryFont, memoryFontSource.Type);
Assert.AreEqual(0, memoryFontSource.Priority);

See Also

MemoryFontSource(byte[], int)

Ctor.

public MemoryFontSource(byte[] fontData, int priority)
ParameterTypeDescription
fontDataByte[]Binary font data.
priorityInt32Font source priority. See the Priority property description for more information.

Examples

Shows how to use a byte array with data from a font file as a font source.

byte[] fontBytes = File.ReadAllBytes(MyDir + "Alte DIN 1451 Mittelschrift.ttf");
MemoryFontSource memoryFontSource = new MemoryFontSource(fontBytes, 0);

Document doc = new Document();
doc.FontSettings = new FontSettings();
doc.FontSettings.SetFontsSources(new FontSourceBase[] {memoryFontSource});

Assert.AreEqual(FontSourceType.MemoryFont, memoryFontSource.Type);
Assert.AreEqual(0, memoryFontSource.Priority);

See Also

MemoryFontSource(byte[], int, string)

Ctor.

public MemoryFontSource(byte[] fontData, int priority, string cacheKey)
ParameterTypeDescription
fontDataByte[]Binary font data.
priorityInt32Font source priority. See the Priority property description for more information.
cacheKeyStringThe key of this source in the cache. See CacheKey property description for more information.

Examples

Shows how to speed up the font cache initialization process.

public void LoadFontSearchCache()
{
    const string cacheKey1 = "Arvo";
    const string cacheKey2 = "Arvo-Bold";
    FontSettings parsedFonts = new FontSettings();
    FontSettings loadedCache = new FontSettings();

    parsedFonts.SetFontsSources(new FontSourceBase[]
    {
        new FileFontSource(FontsDir + "Arvo-Regular.ttf", 0, cacheKey1),
        new FileFontSource(FontsDir + "Arvo-Bold.ttf", 0, cacheKey2)
    });

    using (MemoryStream cacheStream = new MemoryStream())
    {
        parsedFonts.SaveSearchCache(cacheStream);
        loadedCache.SetFontsSources(new FontSourceBase[]
        {
            new SearchCacheStream(cacheKey1),
            new MemoryFontSource(File.ReadAllBytes(FontsDir + "Arvo-Bold.ttf"), 0, cacheKey2)
        }, cacheStream);
    }

    Assert.AreEqual(parsedFonts.GetFontsSources().Length, loadedCache.GetFontsSources().Length);
}

/// <summary>
/// Load the font data only when required instead of storing it in the memory
/// for the entire lifetime of the "FontSettings" object.
/// </summary>
private class SearchCacheStream : StreamFontSource
{
    public SearchCacheStream(string cacheKey):base(0, cacheKey)
    {
    }

    public override Stream OpenFontDataStream()
    {
        return File.OpenRead(FontsDir + "Arvo-Regular.ttf");
    }
}

See Also

MemoryFontSource.CacheKey