CustomFontSource

CustomFontSource delegate

Custom font source provider function

public delegate CustomFontData[] CustomFontSource(params object[] args);
Parameter Type Description
args Object[] The arguments.

Return Value

The list of specific fonts to render the image

Examples

This example demonstrates the custom font source providing to use the specific font(s) for image rendering. Unlike FontSettings.SetFontsFolders method works in the image scope and allowing to provide the fonts in multi-user scenarios.

[C#]

public void CustomFontSourceTest(string inputPath, string outputPath, string fileName, string fontPath)
{
    var loadOptions = new Aspose.Imaging.LoadOptions();
    loadOptions.AddCustomFontSource(GetFontSource, fontPath);
    using (var img = Image.Load(System.IO.Path.Combine(inputPath, fileName), loadOptions))
    {
        Aspose.Imaging.ImageOptions.VectorRasterizationOptions vectorRasterizationOptions =
            (Aspose.Imaging.ImageOptions.VectorRasterizationOptions)img.GetDefaultOptions(new object[] { Color.White, img.Width, img.Height });
        vectorRasterizationOptions.TextRenderingHint = Aspose.Imaging.TextRenderingHint.SingleBitPerPixel;
        vectorRasterizationOptions.SmoothingMode = Aspose.Imaging.SmoothingMode.None;

        img.Save(System.IO.Path.Combine(outputPath, fileName + ".png"), new Aspose.Imaging.ImageOptions.PngOptions
        {
            VectorRasterizationOptions = vectorRasterizationOptions
        });
    }
}

// The custom fonts provider example. 
private Aspose.Imaging.CustomFontHandler.CustomFontData[] GetFontSource(params object[] args)
{
    string fontsPath = string.Empty;
    if (args.Length > 0)
    {
        fontsPath = args[0].ToString();
    }

    var customFontData = new System.Collections.Generic.List<Aspose.Imaging.CustomFontHandler.CustomFontData>();
    foreach (var font in System.IO.Directory.GetFiles(fontsPath))
    {
        customFontData.Add(new Aspose.Imaging.CustomFontHandler.CustomFontData(Path.GetFileNameWithoutExtension(font), System.IO.File.ReadAllBytes(font)));
    }

    return customFontData.ToArray();
}

See Also