/*
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 flex2.compiler.media;
import java.util.ArrayList;
import java.util.Map;
import flex2.compiler.SymbolTable;
import flex2.compiler.TranscoderException;
import flex2.compiler.common.PathResolver;
import flex2.compiler.io.VirtualFile;
import flex2.compiler.util.MimeMappings;
import flex2.compiler.util.NameFormatter;
/**
* Transcodes a compiled PBJ shader file to an ActionScript class.
*
* @author Peter Farland
*/
public class PBJTranscoder extends AbstractTranscoder
{
private DataTranscoder dataTranscoder = new DataTranscoder();
public PBJTranscoder()
{
super(new String[]{MimeMappings.PBJ}, null, true);
}
@Override
public TranscodingResults doTranscode(PathResolver context,
SymbolTable symbolTable, Map<String, Object> args,
String className, boolean generateSource)
throws TranscoderException
{
VirtualFile source = resolveSource(context, args);
// Create ByteArray subclass
String byteArrayClassName = className + "ByteArray";
args.put(NEWNAME, byteArrayClassName);
TranscodingResults byteArrayResults = dataTranscoder.doTranscode(context,
symbolTable, args, byteArrayClassName, generateSource);
byteArrayResults.className = byteArrayClassName;
// Create Shader subclass
TranscodingResults shaderResults = new TranscodingResults(source);
shaderResults.className = className;
if (generateSource)
shaderResults.generatedCode = generateSource(className, byteArrayClassName);
// Associate ByteArray subclass asset with Shader subclass asset.
shaderResults.additionalAssets = new ArrayList<TranscodingResults>();
shaderResults.additionalAssets.add(byteArrayResults);
return shaderResults;
}
@Override
public boolean isSupportedAttribute(String attr)
{
return false;
}
/**
* Generates source:
* <pre>
* package mypackage
* {
*
* import flash.display.Shader;
* import flash.utils.ByteArray;
* import mx.core.IFlexAsset;
* import mypackage.MyShaderAssetByteArray;
*
* public class MyShaderAsset extends Shader implements IFlexAsset
* {
* public function MyShaderAsset()
* {
* super(null);
* byteCode = new mypackage.MyShaderAssetByteArray();
* }
* }
* }
* </pre>
*
* @param className
* @param results
*/
private String generateSource(String fullClassName, String byteArrayClassName)
{
String packageName = NameFormatter.retrievePackageName(fullClassName);
String className = NameFormatter.retrieveClassName(fullClassName);
StringBuilder sb = new StringBuilder();
sb.append("package ").append(packageName).append("\n");
sb.append("{\n");
sb.append("import flash.display.Shader;\n");
sb.append("import flash.utils.ByteArray;\n");
sb.append("import mx.core.IFlexAsset;\n");
if (packageName.length() > 0)
sb.append("import ").append(byteArrayClassName).append(";\n");
sb.append("\n");
sb.append("public class ").append(className).append(" extends Shader implements IFlexAsset\n");
sb.append("{\n");
sb.append("\tpublic function ").append(className).append("()\n");
sb.append(" {\n");
sb.append(" super();\n");
sb.append(" byteCode = new " + byteArrayClassName + "();\n");
sb.append(" }\n");
sb.append("}\n");
sb.append("}\n");
return sb.toString();
}
}