/*******************************************************************************
* 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, 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, TextureAtlasParameter parameter) {
FileHandle atlasFile = resolve(fileName);
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<AssetDescriptor>();
for (Page page : data.getPages()) {
FileHandle handle = resolve(page.textureFile.path());
TextureParameter params = new TextureParameter();
params.format = page.format;
params.genMipMaps = page.useMipMaps;
params.minFilter = page.minFilter;
params.magFilter = page.magFilter;
dependencies.add(new AssetDescriptor(handle.path().replaceAll("\\\\", "/"), 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;
}
}
}