write generated fonts

font-writing-saving.java

/** Convenience method for generating a font, and then writing the fnt and png files.
 * Writing a generated font to files allows the possibility of only generating the fonts when they are missing, otherwise
 * loading from a previously generated file.
 * @param fontFile
 * @param fontSize
 */
private static BitmapFont generateFontWriteFiles(String fontName, FileHandle fontFile, int fontSize, int pageWidth, int pageHeight) {
    FreeTypeFontGenerator generator = new FreeTypeFontGenerator(fontFile);

    PixmapPacker packer = new PixmapPacker(pageWidth, pageHeight, Format.RGBA8888, 2, false);
    FreeTypeBitmapFontData fontData = generator.generateData(fontSize, FreeTypeFontGenerator.DEFAULT_CHARS, false, packer);
    Array<Page> pages = packer.getPages();
    TextureRegion[] texRegions = new TextureRegion[pages.size];
    for (int i=0; i<pages.size; i++) {
        Page p = pages.get(i);
        Texture tex = new Texture(new PixmapTextureData(p.getPixmap(), p.getPixmap().getFormat(), false, false, true)) {
            @Override
            public void dispose () {
                super.dispose();
                getTextureData().consumePixmap().dispose();
            }
        };
        tex.setFilter(Texture.TextureFilter.Nearest, Texture.TextureFilter.Nearest);
        texRegions[i] = new TextureRegion(tex);
    }
	BitmapFont font = new BitmapFont(fontData, texRegions, false);
	saveFontToFile(font, fontSize, fontName, packer);
	generator.dispose();
	packer.dispose();
	return font;
}

private static boolean saveFontToFile(BitmapFont font, int fontSize, String fontName, PixmapPacker packer) {
	FileHandle fontFile = getFontFile(fontName + ".fnt"); // .fnt path
	FileHandle pixmapDir = getFontFile(fontName); // png dir path
	BitmapFontWriter.setOutputFormat(OutputFormat.Text);

	String[] pageRefs = BitmapFontWriter.writePixmaps(packer.getPages(), pixmapDir, fontName);
	Tools.log.debug(String.format("Saving font [%s]: fontfile: %s, pixmapDir: %s\n", fontName, fontFile, pixmapDir));
	// here we must add the png dir to the page refs
	for (int i = 0; i < pageRefs.length; i++) {
		pageRefs[i] = fontName + "/" + pageRefs[i];
		//Tools.log.debug("\tpageRef: " + pageRefs[i]);
	}
	BitmapFontWriter.writeFont(font.getData(), pageRefs, fontFile, new FontInfo(fontName, fontSize), 1, 1);
	return true;
}

private static FileHandle getFontFile(String filename) {
	return Gdx.files.local("generated-fonts/" + filename);
}