| /* |
| * ==================================================================== |
| * 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.poi.sl.draw.geom; |
| |
| import java.awt.geom.Rectangle2D; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * Date: 10/24/11 |
| * |
| * @author Yegor Kozlov |
| */ |
| public class Context { |
| final Map<String, Double> _ctx = new HashMap<String, Double>(); |
| final IAdjustableShape _props; |
| final Rectangle2D _anchor; |
| |
| public Context(CustomGeometry geom, Rectangle2D anchor, IAdjustableShape props){ |
| _props = props; |
| _anchor = anchor; |
| for(Guide gd : geom.adjusts) evaluate(gd); |
| for(Guide gd : geom.guides) evaluate(gd); |
| } |
| |
| public Rectangle2D getShapeAnchor(){ |
| return _anchor; |
| } |
| |
| public Guide getAdjustValue(String name){ |
| return _props.getAdjustValue(name); |
| } |
| |
| public double getValue(String key){ |
| if(key.matches("(\\+|-)?\\d+")){ |
| return Double.parseDouble(key); |
| } |
| |
| Formula builtIn = Formula.builtInFormulas.get(key); |
| if(builtIn != null){ |
| return builtIn.evaluate(this); |
| } |
| |
| if(!_ctx.containsKey(key)) { |
| throw new RuntimeException("undefined variable: " + key); |
| } |
| |
| return _ctx.get(key); |
| } |
| |
| public double evaluate(Formula fmla){ |
| double result = fmla.evaluate(this); |
| String key = fmla.getName(); |
| if(key != null) _ctx.put(key, result); |
| return result; |
| } |
| } |