/*******************************************************************************
* 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;
}
TextureAtlas atlas = new TextureAtlas(data);
data = null;
return atlas;
}
@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;
}
}
}