/*******************************************************************************
* 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.resolvers;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.assets.loaders.FileHandleResolver;
import com.badlogic.gdx.backends.gwt.GwtFileHandle;
import com.badlogic.gdx.files.FileHandle;
public class ResolutionFileResolver implements FileHandleResolver {
public static class Resolution {
public final int portraitWidth;
public final int portraitHeight;
public final String suffix;
public Resolution (int portraitWidth, int portraitHeight, String suffix) {
this.portraitWidth = portraitWidth;
this.portraitHeight = portraitHeight;
this.suffix = suffix;
}
}
protected final FileHandleResolver baseResolver;
protected final Resolution[] descriptors;
public ResolutionFileResolver (FileHandleResolver baseResolver, Resolution... descriptors) {
this.baseResolver = baseResolver;
this.descriptors = descriptors;
}
@Override
public FileHandle resolve (String fileName) {
Resolution bestDesc = choose(descriptors);
FileHandle originalHandle = new GwtFileHandle(fileName);
FileHandle handle = baseResolver.resolve(resolve(originalHandle, bestDesc.suffix));
if (!handle.exists()) handle = baseResolver.resolve(fileName);
return handle;
}
protected String resolve (FileHandle originalHandle, String suffix) {
return originalHandle.parent() + "/" + suffix + "/" + originalHandle.name();
}
static public Resolution choose (Resolution... descriptors) {
int width = 0;
if (Gdx.graphics.getWidth() > Gdx.graphics.getHeight()) {
width = Gdx.graphics.getHeight();
} else {
width = Gdx.graphics.getWidth();
}
Resolution bestDesc = null;
// Find lowest.
int best = Integer.MAX_VALUE;
for (int i = 0, n = descriptors.length; i < n; i++) {
if (descriptors[i].portraitWidth < best) {
best = descriptors[i].portraitWidth;
bestDesc = descriptors[i];
}
}
// Find higher, but not over the screen res.
best = Integer.MAX_VALUE;
for (int i = 0, n = descriptors.length; i < n; i++) {
if (descriptors[i].portraitWidth <= width) {
best = descriptors[i].portraitWidth;
bestDesc = descriptors[i];
}
}
return bestDesc;
}
}