| /* |
| * 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. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.render.pdf.pdfbox; |
| |
| import org.apache.pdfbox.pdmodel.PDPage; |
| |
| /** |
| * Common utility functions for PDF access. |
| */ |
| public final class PDFUtil { |
| |
| private PDFUtil() { } |
| |
| /** |
| * Determines the rotation of a given page and normalizes the returned value to the values |
| * 0, 90, 180 and 270. If not a multiple of 90 is encountered, 0 is returned. |
| * @param page the page |
| * @return the page rotation (0, 90, 180 or 270) |
| */ |
| public static int getNormalizedRotation(PDPage page) { |
| //Handle the /Rotation entry on the page dict |
| int rotation = page.getRotation(); |
| rotation %= 360; |
| if (rotation < 0) { |
| rotation += 360; |
| } |
| switch (rotation) { |
| case 90: |
| case 180: |
| case 270: |
| return rotation; |
| default: |
| return 0; |
| } |
| } |
| |
| } |