com.badlogic.gdx.assets.loaders.TextureAtlasLoader.java Source code

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Here is the source code for com.badlogic.gdx.assets.loaders.TextureAtlasLoader.java

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/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package com.badlogic.gdx.assets.loaders;

import com.badlogic.gdx.assets.AssetDescriptor;
import com.badlogic.gdx.assets.AssetLoaderParameters;
import com.badlogic.gdx.assets.AssetManager;
import com.badlogic.gdx.assets.loaders.TextureLoader.TextureParameter;
import com.badlogic.gdx.files.FileHandle;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.TextureAtlas;
import com.badlogic.gdx.graphics.g2d.TextureAtlas.TextureAtlasData;
import com.badlogic.gdx.graphics.g2d.TextureAtlas.TextureAtlasData.Page;
import com.badlogic.gdx.utils.Array;

/** {@link AssetLoader} to load {@link TextureAtlas} instances. Passing a {@link TextureAtlasParameter} to
 * {@link AssetManager#load(String, Class, AssetLoaderParameters)} allows to specify whether the atlas regions should be flipped
 * on the y-axis or not.
 * @author mzechner */
public class TextureAtlasLoader
        extends SynchronousAssetLoader<TextureAtlas, TextureAtlasLoader.TextureAtlasParameter> {
    public TextureAtlasLoader(FileHandleResolver resolver) {
        super(resolver);
    }

    TextureAtlasData data;

    @Override
    public TextureAtlas load(AssetManager assetManager, String fileName, FileHandle file,
            TextureAtlasParameter parameter) {
        for (Page page : data.getPages()) {
            Texture texture = assetManager.get(page.textureFile.path().replaceAll("\\\\", "/"), Texture.class);
            page.texture = texture;
        }

        return new TextureAtlas(data);
    }

    @Override
    public Array<AssetDescriptor> getDependencies(String fileName, FileHandle atlasFile,
            TextureAtlasParameter parameter) {
        FileHandle imgDir = atlasFile.parent();

        if (parameter != null)
            data = new TextureAtlasData(atlasFile, imgDir, parameter.flip);
        else {
            data = new TextureAtlasData(atlasFile, imgDir, false);
        }

        Array<AssetDescriptor> dependencies = new Array();
        for (Page page : data.getPages()) {
            TextureParameter params = new TextureParameter();
            params.format = page.format;
            params.genMipMaps = page.useMipMaps;
            params.minFilter = page.minFilter;
            params.magFilter = page.magFilter;
            dependencies.add(new AssetDescriptor(page.textureFile, Texture.class, params));
        }
        return dependencies;
    }

    static public class TextureAtlasParameter extends AssetLoaderParameters<TextureAtlas> {
        /** whether to flip the texture atlas vertically **/
        public boolean flip = false;

        public TextureAtlasParameter() {
        }

        public TextureAtlasParameter(boolean flip) {
            this.flip = flip;
        }
    }
}