107 lines
3.9 KiB
Java
107 lines
3.9 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.hslf.examples;
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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.Graphics2D;
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import java.awt.RenderingHints;
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import java.awt.geom.Rectangle2D;
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import java.awt.image.BufferedImage;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import javax.imageio.ImageIO;
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import org.apache.poi.hslf.usermodel.HSLFSlide;
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import org.apache.poi.hslf.usermodel.HSLFSlideShow;
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/**
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* Demonstrates how you can use HSLF to convert each slide into a PNG image
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*
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* @author Yegor Kozlov
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*/
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public final class PPT2PNG {
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public static void main(String args[]) throws Exception {
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if (args.length == 0) {
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usage();
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return;
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}
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int slidenum = -1;
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float scale = 1;
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String file = null;
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for (int i = 0; i < args.length; i++) {
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if (args[i].startsWith("-")) {
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if ("-scale".equals(args[i])){
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scale = Float.parseFloat(args[++i]);
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} else if ("-slide".equals(args[i])) {
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slidenum = Integer.parseInt(args[++i]);
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}
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} else {
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file = args[i];
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}
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}
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if(file == null){
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usage();
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return;
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}
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FileInputStream is = new FileInputStream(file);
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HSLFSlideShow ppt = new HSLFSlideShow(is);
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is.close();
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Dimension pgsize = ppt.getPageSize();
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int width = (int)(pgsize.width*scale);
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int height = (int)(pgsize.height*scale);
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for (HSLFSlide slide : ppt.getSlides()) {
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if (slidenum != -1 && slidenum != slide.getSlideNumber()) continue;
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String title = slide.getTitle();
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System.out.println("Rendering slide "+slide.getSlideNumber() + (title == null ? "" : ": " + title));
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BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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Graphics2D graphics = img.createGraphics();
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graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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graphics.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
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graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
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graphics.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
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graphics.setPaint(Color.white);
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graphics.fill(new Rectangle2D.Float(0, 0, width, height));
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graphics.scale((double)width/pgsize.width, (double)height/pgsize.height);
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slide.draw(graphics);
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String fname = file.replaceAll("\\.ppt", "-" + slide.getSlideNumber() + ".png");
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FileOutputStream out = new FileOutputStream(fname);
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ImageIO.write(img, "png", out);
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out.close();
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}
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}
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private static void usage(){
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System.out.println("Usage: PPT2PNG [-scale <scale> -slide <num>] ppt");
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}
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}
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