gistfile1.java

package com.badlogic.gdx.tests;
 
import com.badlogic.gdx.Files.FileType;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.files.FileHandle;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Pixmap.Format;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.Texture.TextureFilter;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.BitmapFont.Glyph;
import com.badlogic.gdx.graphics.g2d.PixmapPacker;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.graphics.g2d.TextureAtlas;
import com.badlogic.gdx.graphics.g2d.TextureAtlas.AtlasRegion;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator;
import com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator.FreeTypeBitmapFontData;
import com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator.FreeTypeFontParameter;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.Label;
import com.badlogic.gdx.scenes.scene2d.ui.Label.LabelStyle;
import com.badlogic.gdx.tests.utils.GdxTest;
import com.badlogic.gdx.utils.Array;
 
public class FontPackingTest extends GdxTest {
 
	private final static int SIZE_1 = 30;
	private final static int SIZE_2 = 20;
	private final static int COUNT = 2;
	private final static String CHARS = "ABC";
	private PixmapPacker mPacker;
	private TextureAtlas mAtlas;
	private BitmapFont[] mFonts = new BitmapFont[COUNT];
	private Stage mStage;
	private Label[] mLabels = new Label[COUNT];
	private SpriteBatch mBatch;
 
	@Override
	public void create() {
		mBatch = new SpriteBatch();
		mPacker = new PixmapPacker(512, 512, Format.RGBA8888, 0, false);
		mFonts[0] = loadFont("data/MTLc3m.ttf", CHARS, SIZE_1);
		mFonts[1] = loadFont("data/MTLc3m.ttf", CHARS, SIZE_2);
		mStage = new Stage();
		mLabels[0] = new Label(CHARS, new LabelStyle(mFonts[0], Color.WHITE));
		mLabels[1] = new Label(CHARS, new LabelStyle(mFonts[1], Color.CYAN));
		for (Label label : mLabels) {
			mStage.addActor(label);
		}
	}
 
	private BitmapFont loadFont(String name, String characters, int size) {
		if (mAtlas == null) {
			mAtlas = mPacker.generateTextureAtlas(TextureFilter.Nearest,
					TextureFilter.Nearest, false);
		}
 
		FreeTypeFontGenerator generator = null;
 
		FileHandle fontHandle = Gdx.files
				.getFileHandle(name, FileType.Internal);
		if (!fontHandle.exists()) {
			throw new IllegalStateException("No font available?");
		}
 
		generator = new FreeTypeFontGenerator(fontHandle);
 
		FreeTypeFontParameter params = new FreeTypeFontParameter();
		params.size = size;
		params.characters = characters;
		params.packer = mPacker;
		FreeTypeBitmapFontData data = generator.generateData(params);
		mPacker.updateTextureAtlas(mAtlas, TextureFilter.Nearest, TextureFilter.Nearest, false);
		Array<TextureRegion> fontRegions = new Array<TextureRegion>();
		// Remove ".ttf" at the end...
		final String fontKey = String.format("%s_%d_",
				name.substring(0, name.length() - 4), size);
		for (AtlasRegion region : mAtlas.getRegions()) {
			if (region.name.startsWith(fontKey)) {
				fontRegions.add(region);
			}
		}
 
		generator.dispose();
		Texture texture = mAtlas.getTextures().first();
		return new BitmapFont(data,
				new TextureRegion(texture, 0, 0, texture.getWidth(), texture.getHeight()),
				true);
	}
 
	@Override
	public void dispose() {
		mAtlas.dispose();
	}
 
	@Override
	public void render() {
		Gdx.gl.glClearColor(0, 0, 0, 1);
		Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
//		mStage.act();
//		mStage.draw();
 
				
		mBatch.begin();
		mFonts[0].setColor(Color.RED);
		mFonts[0].draw(mBatch, CHARS, 0, 50);		
		mFonts[1].setColor(Color.BLUE);
		mFonts[1].draw(mBatch, CHARS, 0, 100);
		
		int x = 0;
		for(TextureRegion region: mAtlas.getRegions()) {
			mBatch.draw(region, x, 150);
			x += region.getRegionWidth() + 4;
		}
		
		mBatch.end();
	}
 
	@Override
	public void resize(int width, int height) {
		mStage.getViewport().update(width, height);
		
		float x = 0.0f;
		float y = 10.0f;
 
		for (Label label : mLabels) {
			label.setPosition(x, y);
			y += 30.0f;
		}
	}
 
	@Override
	public void pause() {
	}
 
	@Override
	public void resume() {
	}
}