/*
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.css.engine.value.svg12;
import org.apache.batik.css.engine.CSSEngine;
import org.apache.batik.css.engine.CSSStylableElement;
import org.apache.batik.css.engine.StyleMap;
import org.apache.batik.css.engine.value.LengthManager;
import org.apache.batik.css.engine.value.FloatValue;
import org.apache.batik.css.engine.value.svg12.SVG12ValueConstants;
import org.apache.batik.css.engine.value.Value;
import org.apache.batik.css.engine.value.ValueManager;
import org.apache.batik.util.SVG12CSSConstants;
import org.w3c.css.sac.LexicalUnit;
import org.w3c.dom.css.CSSPrimitiveValue;
import org.w3c.dom.css.CSSValue;
import org.w3c.dom.DOMException;
/**
* This class provides a factory for the 'margin-*' properties values.
*
* @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
* @version $Id: LineHeightManager.java,v 1.2 2005/03/27 08:58:31 cam Exp $
*/
public class LineHeightManager extends LengthManager {
public LineHeightManager() { }
/**
* Implements {@link ValueManager#isInheritedProperty()}.
*/
public boolean isInheritedProperty() {
return true;
}
/**
* Implements {@link ValueManager#getPropertyName()}.
*/
public String getPropertyName() {
return SVG12CSSConstants.CSS_LINE_HEIGHT_PROPERTY;
}
/**
* Implements {@link ValueManager#getDefaultValue()}.
*/
public Value getDefaultValue() {
return SVG12ValueConstants.NORMAL_VALUE;
}
/**
* Implements {@link ValueManager#createValue(LexicalUnit,CSSEngine)}.
*/
public Value createValue(LexicalUnit lu, CSSEngine engine)
throws DOMException {
switch (lu.getLexicalUnitType()) {
case LexicalUnit.SAC_INHERIT:
return SVG12ValueConstants.INHERIT_VALUE;
case LexicalUnit.SAC_IDENT: {
String s = lu.getStringValue().toLowerCase();
if (SVG12CSSConstants.CSS_NORMAL_VALUE.equals(s))
return SVG12ValueConstants.NORMAL_VALUE;
throw createInvalidIdentifierDOMException(lu.getStringValue());
}
default:
return super.createValue(lu, engine);
}
}
/**
* Indicates the orientation of the property associated with
* this manager.
*/
protected int getOrientation() {
// Not really used.
return VERTICAL_ORIENTATION;
}
/**
* Implements {@link
* ValueManager#computeValue(CSSStylableElement,String,CSSEngine,int,StyleMap,Value)}.
*/
public Value computeValue(CSSStylableElement elt,
String pseudo,
CSSEngine engine,
int idx,
StyleMap sm,
Value value) {
if (value.getCssValueType() != CSSValue.CSS_PRIMITIVE_VALUE)
return value;
switch (value.getPrimitiveType()) {
case CSSPrimitiveValue.CSS_NUMBER:
return new LineHeightValue(CSSPrimitiveValue.CSS_NUMBER,
value.getFloatValue(), true);
case CSSPrimitiveValue.CSS_PERCENTAGE: {
float v = value.getFloatValue();
int fsidx = engine.getFontSizeIndex();
float fs = engine.getComputedStyle
(elt, pseudo, fsidx).getFloatValue();
return new FloatValue(CSSPrimitiveValue.CSS_NUMBER, v * fs*.01f);
}
default:
return super.computeValue(elt, pseudo, engine, idx, sm, value);
}
}
}