/*
Copyright 2004 The Apache Software Foundation
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 org.apache.batik.dom.svg;
import java.util.StringTokenizer;
import org.apache.batik.util.SVGConstants;
import org.apache.batik.parser.ParseException;
import org.apache.batik.parser.DefaultPreserveAspectRatioHandler;
import org.apache.batik.parser.PreserveAspectRatioHandler;
import org.apache.batik.parser.PreserveAspectRatioParser;
import org.w3c.dom.DOMException;
import org.w3c.dom.svg.SVGPreserveAspectRatio;
/**
* Abstract implementation for SVGPreservAspectRatio
*
* This is the base implementation for SVGPreservAspectRatio
*
* @author Tonny Kohar
*/
public abstract class AbstractSVGPreserveAspectRatio
implements SVGPreserveAspectRatio {
/**
* align property by default the value is
* SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMID
*/
protected short align =
SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMID;
/**
* meetOrSlice property
* by default the value is SVGPreserveAspectRatio.SVG_MEETORSLICE_MEET;
*/
protected short meetOrSlice = SVGPreserveAspectRatio.SVG_MEETORSLICE_MEET;
/** Creates a new instance of AbstractSVGPreserveAspectRatio */
public AbstractSVGPreserveAspectRatio() {
}
public short getAlign() {
return this.align;
}
public short getMeetOrSlice() {
return this.meetOrSlice;
}
public void setAlign(short align) {
this.align = align;
setAttributeValue(getValueAsString());
}
public void setMeetOrSlice(short meetOrSlice) {
this.meetOrSlice = meetOrSlice;
setAttributeValue(getValueAsString());
}
public void reset() {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMID;
meetOrSlice = SVGPreserveAspectRatio.SVG_MEETORSLICE_MEET;
//setAttributeValue(getValueAsString());
}
protected abstract void setAttributeValue(String value)
throws DOMException;
protected abstract DOMException createDOMException(short type, String key,
Object[] args);
protected void setValueAsString(String value) throws DOMException {
PreserveAspectRatioParserHandler ph;
ph = new PreserveAspectRatioParserHandler();
try {
PreserveAspectRatioParser p = new PreserveAspectRatioParser();
p.setPreserveAspectRatioHandler(ph);
p.parse(value);
align = ph.getAlign();
meetOrSlice = ph.getMeetOrSlice();
} catch (ParseException ex) {
throw createDOMException(SVG_PRESERVEASPECTRATIO_UNKNOWN,
"invalid value for preserveAspectRatio",
null);
}
}
/** Return the value of String to be used on setAttributeNS, in
* other word the mapping of align meetOrSlice to representation
* string use by SVG
*/
protected String getValueAsString() {
String value = null;
switch (align) {
case SVG_PRESERVEASPECTRATIO_NONE:
value = SVGConstants.SVG_NONE_VALUE;
return value; // if none ignore the rest
case SVG_PRESERVEASPECTRATIO_XMINYMIN:
value = SVGConstants.SVG_XMINYMIN_VALUE;
break;
case SVG_PRESERVEASPECTRATIO_XMIDYMIN:
value = SVGConstants.SVG_XMIDYMIN_VALUE;
break;
case SVG_PRESERVEASPECTRATIO_XMAXYMIN:
value = SVGConstants.SVG_XMAXYMIN_VALUE;
break;
case SVG_PRESERVEASPECTRATIO_XMINYMID:
value = SVGConstants.SVG_XMINYMID_VALUE;
break;
case SVG_PRESERVEASPECTRATIO_XMIDYMID:
value = SVGConstants.SVG_XMIDYMID_VALUE;
break;
case SVG_PRESERVEASPECTRATIO_XMAXYMID:
value = SVGConstants.SVG_XMAXYMID_VALUE;
break;
case SVG_PRESERVEASPECTRATIO_XMINYMAX:
value = SVGConstants.SVG_XMINYMAX_VALUE;
break;
case SVG_PRESERVEASPECTRATIO_XMIDYMAX:
value = SVGConstants.SVG_XMIDYMAX_VALUE;
break;
case SVG_PRESERVEASPECTRATIO_XMAXYMAX:
value = SVGConstants.SVG_XMAXYMAX_VALUE;
break;
default:
throw createDOMException
(SVG_PRESERVEASPECTRATIO_UNKNOWN,
"invalid value for preserveAspectRatio",null);
//break;
}
switch (meetOrSlice) {
case SVG_MEETORSLICE_MEET:
value = value + " " + SVGConstants.SVG_MEET_VALUE;
break;
case SVG_MEETORSLICE_SLICE:
value = value + " " + SVGConstants.SVG_SLICE_VALUE;
break;
default:
throw createDOMException(SVG_MEETORSLICE_UNKNOWN,
"invalid value for preserveAspectRatio",
null);
//break;
}
return value;
}
protected class PreserveAspectRatioParserHandler
extends DefaultPreserveAspectRatioHandler {
public short align =
SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMID;
public short meetOrSlice = SVGPreserveAspectRatio.SVG_MEETORSLICE_MEET;
public short getAlign() {
return align;
}
public short getMeetOrSlice() {
return meetOrSlice;
}
/**
* Invoked when 'none' been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void none() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_NONE;
}
/**
* Invoked when 'xMaxYMax' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMaxYMax() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMAXYMAX;
}
/**
* Invoked when 'xMaxYMid' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMaxYMid() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMAXYMID;
}
/**
* Invoked when 'xMaxYMin' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMaxYMin() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMAXYMIN;
}
/**
* Invoked when 'xMidYMax' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMidYMax() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMAX;
}
/**
* Invoked when 'xMidYMid' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMidYMid() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMID;
}
/**
* Invoked when 'xMidYMin' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMidYMin() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMIDYMIN;
}
/**
* Invoked when 'xMinYMax' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMinYMax() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMINYMAX;
}
/**
* Invoked when 'xMinYMid' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMinYMid() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMINYMID;
}
/**
* Invoked when 'xMinYMin' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void xMinYMin() throws ParseException {
align = SVGPreserveAspectRatio.SVG_PRESERVEASPECTRATIO_XMINYMIN;
}
/**
* Invoked when 'meet' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void meet() throws ParseException {
meetOrSlice = SVGPreserveAspectRatio.SVG_MEETORSLICE_MEET;
}
/**
* Invoked when 'slice' has been parsed.
* @exception ParseException if an error occured while processing
* the transform
*/
public void slice() throws ParseException {
meetOrSlice = SVGPreserveAspectRatio.SVG_MEETORSLICE_SLICE;
}
}
}