/*
 * 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 com.tom_roush.pdfbox.pdmodel;

import com.tom_roush.pdfbox.cos.COSName;
import com.tom_roush.pdfbox.pdmodel.interactive.pagenavigation.PDTransition;
import com.tom_roush.pdfbox.pdmodel.interactive.pagenavigation.PDTransitionDirection;
import com.tom_roush.pdfbox.pdmodel.interactive.pagenavigation.PDTransitionStyle;

import org.junit.Test;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;

import static junit.framework.TestCase.assertEquals;

/**
 * @author Andrea Vacondio
 *
 */
public class TestPDPageTransitions
{

    @Test
    public void readTransitions() throws IOException
    {
        PDDocument doc = PDDocument.load(this.getClass().getResourceAsStream(
                "/pdfbox/com/tom_roush/pdfbox/pdmodel/interactive/pagenavigation/transitions_test.pdf"));
        PDTransition firstTransition = doc.getPages().get(0).getTransition();
        assertEquals(PDTransitionStyle.Glitter.name(), firstTransition.getStyle());
        assertEquals(2, firstTransition.getDuration(), 0);
        assertEquals(PDTransitionDirection.TOP_LEFT_TO_BOTTOM_RIGHT.getCOSBase(),
                firstTransition.getDirection());
        doc.close();
    }

    @Test
    public void saveAndReadTransitions() throws IOException
    {
        // save
        PDDocument document = new PDDocument();
        PDPage page = new PDPage();
        document.addPage(page);
        PDTransition transition = new PDTransition(PDTransitionStyle.Fly);
        transition.setDirection(PDTransitionDirection.NONE);
        transition.setFlyScale(0.5f);
        page.setTransition(transition, 2);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        document.save(baos);
        document.close();

        // read
        byte[] pdf = baos.toByteArray();
        PDDocument doc = PDDocument.load(new ByteArrayInputStream(pdf));
        page = doc.getPages().get(0);
        PDTransition loadedTransition = page.getTransition();
        assertEquals(PDTransitionStyle.Fly.name(), loadedTransition.getStyle());
        assertEquals(2, page.getCOSObject().getFloat(COSName.DUR), 0);
        assertEquals(PDTransitionDirection.NONE.getCOSBase(), loadedTransition.getDirection());
        doc.close();
    }
}