readme.md

Aspose.Imaging for Java API allows 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.

Interested ?

You may go further at : https://products.aspose.com/imaging/java/ or at https://github.com/aspose-imaging/Aspose.Imaging-for-Java

custom-fonts.java

import com.aspose.imaging.*;
import com.aspose.imaging.customfonthandler.CustomFontData;
import com.aspose.imaging.imageoptions.PngOptions;
import com.aspose.imaging.imageoptions.VectorRasterizationOptions;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.ArrayList;
import java.util.List;

String dataDir = "C:/folder/";
String[] files = new String[] { "missing-font.emf", "missing-font.odg", "missing-font.wmf", "missing-font.svg" };

for (String file : files)
{
	String outputPath = dataDir + file + ".png";
	CustomFontSourceTest(dataDir, dataDir, file, dataDir + "Fonts");
	new File(outputPath).delete();
}    

public static void CustomFontSourceTest(String inputPath, String outputPath, String fileName, String fontPath)
{
	LoadOptions loadOptions = new LoadOptions();
	loadOptions.addCustomFontSource(new CustomFontSource(), fontPath);
	try (Image img = Image.load(inputPath + fileName, loadOptions))
	{
		VectorRasterizationOptions vectorRasterizationOptions =
				(VectorRasterizationOptions)img.getDefaultOptions(new Object[] { Color.getWhite(), img.getWidth(), img.getHeight() });
		vectorRasterizationOptions.setTextRenderingHint(TextRenderingHint.SingleBitPerPixel);
		vectorRasterizationOptions.setSmoothingMode(SmoothingMode.None);

		img.save(outputPath + fileName + ".png", new PngOptions()
		{{
			setVectorRasterizationOptions(vectorRasterizationOptions);
		}});
	}
}

// The custom fonts' provider example.
static class CustomFontSource implements com.aspose.imaging.CustomFontSource
{
	@Override
	public CustomFontData[] get(Object... args)
	{
		String fontsPath = "";
		if (args.length > 0)
		{
			fontsPath = args[0].toString();
		}

		List<CustomFontData> customFontData = new ArrayList<>();
		final File[] files = new File(fontsPath).listFiles();
		if (files != null)
		{
			for (File font : files)
			{
				try
				{
					final String fontName = font.getName();
					customFontData.add(new CustomFontData(fontName.substring(0, fontName.lastIndexOf('.')), Files.readAllBytes(font.toPath())));
				}
				catch (IOException ignored)
				{
					// Skip this
				}
			}
		}

		return customFontData.toArray(new CustomFontData[0]);
	}
}