| /* |
| * 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.fop.render.shading; |
| |
| import java.util.List; |
| |
| import org.apache.fop.pdf.PDFDeviceColorSpace; |
| import org.apache.fop.pdf.PDFNumber; |
| |
| /** |
| * A class for writing shading objects for different output formats |
| */ |
| public class ShadingPattern { |
| |
| private Shading shading; |
| |
| /** |
| * Constructor |
| * @param shading The shading object from which to write the output |
| */ |
| public ShadingPattern(Shading shading) { |
| this.shading = shading; |
| } |
| |
| /** |
| * Outputs the given shading object to a String |
| * @param colorSpace The Colospace (PDF and Postscript) |
| * @param shadingType The shading type |
| * @param background The background |
| * @param bBox The bounding box |
| * @param antiAlias Anti-aliasing |
| * @return Returns the output string |
| */ |
| public String toString(PDFDeviceColorSpace colorSpace, int shadingType, List background, |
| List bBox, boolean antiAlias) { |
| StringBuffer p = new StringBuffer(128); |
| p.append("<<\n/ShadingType " + shadingType + " \n"); |
| if (colorSpace != null) { |
| p.append("/ColorSpace /" |
| + colorSpace.getName() + " \n"); |
| } |
| |
| if (background != null) { |
| p.append("/Background [ "); |
| for (int bgIndex = 0; bgIndex < background.size(); bgIndex++) { |
| p.append(PDFNumber.doubleOut((Double)background.get(bgIndex)) |
| + " "); |
| } |
| p.append("] \n"); |
| } |
| |
| if (bBox |
| != null) { // I've never seen an example, so I guess this is right. |
| p.append("/BBox [ "); |
| for (int bboxIndex = 0; bboxIndex < bBox.size(); bboxIndex++) { |
| p.append(PDFNumber.doubleOut((Double)bBox.get(bboxIndex)) |
| + " "); |
| } |
| p.append("] \n"); |
| } |
| |
| if (antiAlias) { |
| p.append("/AntiAlias " + antiAlias + " \n"); |
| } |
| |
| // Here's where we differentiate based on what type it is. |
| switch (shadingType) { |
| //Function based shading |
| case 1: p = shading.handleShadingType1(p); break; |
| //Axial shading |
| case 2: |
| //Radial shading |
| case 3: p = shading.handleShadingType2or3(p); break; |
| //Free-form Gouraud-shaded triangle meshes |
| case 4: |
| //Coons patch meshes |
| case 6: |
| //Tensor product patch meshes |
| case 7: p = shading.handleShadingType4or6or7(p); break; |
| //Lattice Free form gouraud-shaded triangle mesh |
| case 5: p = shading.handleShadingType5(p); break; |
| default: //Shading pattern outside expecting values |
| break; |
| } |
| |
| p.append(">>"); |
| |
| return (p.toString()); |
| } |
| } |