org.apache.xmlgraphics.java2d.TransformType Maven / Gradle / Ivy
/*
* 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.
*/
/* $Id: TransformType.java 1732018 2016-02-24 04:51:06Z gadams $ */
package org.apache.xmlgraphics.java2d;
// CSOFF: WhitespaceAround
/**
* Enumeration for transformation types.
*
* @version $Id: TransformType.java 1732018 2016-02-24 04:51:06Z gadams $
* Originally authored by Vincent Hardy.
*/
public final class TransformType {
/*
* Transform type constants
*/
public static final int TRANSFORM_TRANSLATE = 0;
public static final int TRANSFORM_ROTATE = 1;
public static final int TRANSFORM_SCALE = 2;
public static final int TRANSFORM_SHEAR = 3;
public static final int TRANSFORM_GENERAL = 4;
/**
* Strings describing the elementary transforms
*/
public static final String TRANSLATE_STRING = "translate";
public static final String ROTATE_STRING = "rotate";
public static final String SCALE_STRING = "scale";
public static final String SHEAR_STRING = "shear";
public static final String GENERAL_STRING = "general";
/**
* TransformType values
*/
public static final TransformType TRANSLATE = new TransformType(TRANSFORM_TRANSLATE, TRANSLATE_STRING);
public static final TransformType ROTATE = new TransformType(TRANSFORM_ROTATE, ROTATE_STRING);
public static final TransformType SCALE = new TransformType(TRANSFORM_SCALE, SCALE_STRING);
public static final TransformType SHEAR = new TransformType(TRANSFORM_SHEAR, SHEAR_STRING);
public static final TransformType GENERAL = new TransformType(TRANSFORM_GENERAL, GENERAL_STRING);
private String desc;
private int val;
/**
* Constructor is private so that no instances other than
* the ones in the enumeration can be created.
* @see #readResolve
*/
private TransformType(int val, String desc) {
this.desc = desc;
this.val = val;
}
/**
* @return description
*/
public String toString() {
return desc;
}
/**
* Convenience for enumeration switching.
* That is,
*
* switch(transformType.toInt()){
* case TransformType.TRANSFORM_TRANSLATE:
* ....
* case TransformType.TRANSFORM_ROTATE:
*
*/
public int toInt() {
return val;
}
/**
* This is called by the serialization code before it returns an unserialized
* object. To provide for unicity of instances, the instance that was read
* is replaced by its static equivalent
*/
public Object readResolve() {
switch(val) {
case TRANSFORM_TRANSLATE:
return TransformType.TRANSLATE;
case TRANSFORM_ROTATE:
return TransformType.ROTATE;
case TRANSFORM_SCALE:
return TransformType.SCALE;
case TRANSFORM_SHEAR:
return TransformType.SHEAR;
case TRANSFORM_GENERAL:
return TransformType.GENERAL;
default:
throw new RuntimeException("Unknown TransformType value");
}
}
}