| /* |
| * ==================================================================== |
| * 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; |
| import java.util.regex.Pattern; |
| |
| public class Context { |
| private static final Pattern DOUBLE_PATTERN = Pattern.compile( |
| "[\\x00-\\x20]*[+-]?(NaN|Infinity|((((\\p{Digit}+)(\\.)?((\\p{Digit}+)?)" + |
| "([eE][+-]?(\\p{Digit}+))?)|(\\.(\\p{Digit}+)([eE][+-]?(\\p{Digit}+))?)|" + |
| "(((0[xX](\\p{XDigit}+)(\\.)?)|(0[xX](\\p{XDigit}+)?(\\.)(\\p{XDigit}+)))" + |
| "[pP][+-]?(\\p{Digit}+)))[fFdD]?))[\\x00-\\x20]*"); |
| |
| private final Map<String, Double> _ctx = new HashMap<>(); |
| private final IAdjustableShape _props; |
| private 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); |
| } |
| } |
| |
| Rectangle2D getShapeAnchor(){ |
| return _anchor; |
| } |
| |
| Guide getAdjustValue(String name){ |
| return _props.getAdjustValue(name); |
| } |
| |
| public double getValue(String key){ |
| if(DOUBLE_PATTERN.matcher(key).matches()){ |
| return Double.parseDouble(key); |
| } |
| |
| // BuiltInGuide throws IllegalArgumentException if key is not defined |
| return _ctx.containsKey(key) ? _ctx.get(key) : evaluate(BuiltInGuide.valueOf("_"+key)); |
| } |
| |
| public double evaluate(Formula fmla){ |
| double result = fmla.evaluate(this); |
| if (fmla instanceof Guide) { |
| String key = ((Guide)fmla).getName(); |
| if (key != null) { |
| _ctx.put(key, result); |
| } |
| } |
| return result; |
| } |
| } |