| /* |
| |
| 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 org.apache.batik.css.engine.value.svg; |
| |
| 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.FloatValue; |
| import org.apache.batik.css.engine.value.LengthManager; |
| import org.apache.batik.css.engine.value.StringMap; |
| import org.apache.batik.css.engine.value.Value; |
| import org.apache.batik.css.engine.value.ValueManager; |
| import org.apache.batik.util.CSSConstants; |
| import org.apache.batik.util.SVGTypes; |
| |
| import org.w3c.css.sac.LexicalUnit; |
| import org.w3c.dom.DOMException; |
| import org.w3c.dom.css.CSSPrimitiveValue; |
| |
| /** |
| * This class provides a manager for the 'baseline-shift' property values. |
| * |
| * @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a> |
| * @version $Id$ |
| */ |
| public class BaselineShiftManager extends LengthManager { |
| |
| /** |
| * The identifier values. |
| */ |
| protected static final StringMap values = new StringMap(); |
| static { |
| values.put(CSSConstants.CSS_BASELINE_VALUE, |
| SVGValueConstants.BASELINE_VALUE); |
| values.put(CSSConstants.CSS_SUB_VALUE, |
| SVGValueConstants.SUB_VALUE); |
| values.put(CSSConstants.CSS_SUPER_VALUE, |
| SVGValueConstants.SUPER_VALUE); |
| } |
| |
| /** |
| * Implements {@link ValueManager#isInheritedProperty()}. |
| */ |
| public boolean isInheritedProperty() { |
| return false; |
| } |
| |
| /** |
| * Implements {@link ValueManager#isAnimatableProperty()}. |
| */ |
| public boolean isAnimatableProperty() { |
| return true; |
| } |
| |
| /** |
| * Implements {@link ValueManager#isAdditiveProperty()}. |
| */ |
| public boolean isAdditiveProperty() { |
| return false; |
| } |
| |
| /** |
| * Implements {@link ValueManager#getPropertyType()}. |
| */ |
| public int getPropertyType() { |
| return SVGTypes.TYPE_BASELINE_SHIFT_VALUE; |
| } |
| |
| /** |
| * Implements {@link ValueManager#getPropertyName()}. |
| */ |
| public String getPropertyName() { |
| return CSSConstants.CSS_BASELINE_SHIFT_PROPERTY; |
| } |
| |
| /** |
| * Implements {@link ValueManager#getDefaultValue()}. |
| */ |
| public Value getDefaultValue() { |
| return SVGValueConstants.BASELINE_VALUE; |
| } |
| |
| /** |
| * Implements {@link ValueManager#createValue(LexicalUnit,CSSEngine)}. |
| */ |
| public Value createValue(LexicalUnit lu, CSSEngine engine) |
| throws DOMException { |
| switch (lu.getLexicalUnitType()) { |
| case LexicalUnit.SAC_INHERIT: |
| return SVGValueConstants.INHERIT_VALUE; |
| |
| case LexicalUnit.SAC_IDENT: |
| Object v = values.get(lu.getStringValue().toLowerCase().intern()); |
| if (v == null) { |
| throw createInvalidIdentifierDOMException(lu.getStringValue()); |
| } |
| return (Value)v; |
| } |
| return super.createValue(lu, engine); |
| } |
| |
| /** |
| * Implements {@link ValueManager#createStringValue(short,String,CSSEngine)}. |
| */ |
| public Value createStringValue(short type, String value, CSSEngine engine) |
| throws DOMException { |
| if (type != CSSPrimitiveValue.CSS_IDENT) { |
| throw createInvalidIdentifierDOMException(value); |
| } |
| Object v = values.get(value.toLowerCase().intern()); |
| if (v == null) { |
| throw createInvalidIdentifierDOMException(value); |
| } |
| return (Value)v; |
| } |
| |
| /** |
| * 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.getPrimitiveType() == CSSPrimitiveValue.CSS_PERCENTAGE) { |
| sm.putLineHeightRelative(idx, true); |
| |
| int fsi = engine.getLineHeightIndex(); |
| CSSStylableElement parent; |
| parent = (CSSStylableElement)elt.getParentNode(); |
| if (parent == null) { |
| // Hmmm somthing pretty odd - can't happen accordint to spec, |
| // should always have text parent. |
| // http://www.w3.org/TR/SVG11/text.html#BaselineShiftProperty |
| parent = elt; |
| } |
| Value fs = engine.getComputedStyle(parent, pseudo, fsi); |
| float fsv = fs.getFloatValue(); |
| float v = value.getFloatValue(); |
| return new FloatValue(CSSPrimitiveValue.CSS_NUMBER, |
| (fsv * v) / 100f); |
| } |
| return super.computeValue(elt, pseudo, engine, idx, sm, value); |
| } |
| |
| |
| /** |
| * Indicates the orientation of the property associated with |
| * this manager. |
| */ |
| protected int getOrientation() { |
| return BOTH_ORIENTATION; // Not used |
| } |
| |
| } |