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-rw-r--r--src/java/org/apache/fop/render/shading/ShadingPattern.java105
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diff --git a/src/java/org/apache/fop/render/shading/ShadingPattern.java b/src/java/org/apache/fop/render/shading/ShadingPattern.java
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+/*
+ * 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());
+ }
+}