| /* |
| * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package org.netbeans.jemmy.util; |
| |
| import java.awt.AWTException; |
| import java.awt.Component; |
| import java.awt.Rectangle; |
| import java.awt.Robot; |
| import java.awt.Toolkit; |
| import java.awt.image.BufferedImage; |
| import java.io.BufferedOutputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.zip.CRC32; |
| import java.util.zip.Deflater; |
| import java.util.zip.DeflaterOutputStream; |
| |
| /** |
| * This class allows to encode BufferedImage into B/W, greyscale or true color |
| * PNG image format with maximum compression.<br> |
| * It also provides complete functionality for capturing full screen, part of |
| * screen or single component, encoding and saving captured image info PNG file. |
| * |
| * @author Adam Sotona |
| * @version 1.0 |
| */ |
| public class PNGEncoder extends Object { |
| |
| /** |
| * black and white image mode. |
| */ |
| public static final byte BW_MODE = 0; |
| /** |
| * grey scale image mode. |
| */ |
| public static final byte GREYSCALE_MODE = 1; |
| /** |
| * full color image mode. |
| */ |
| public static final byte COLOR_MODE = 2; |
| |
| OutputStream out; |
| CRC32 crc; |
| byte mode; |
| |
| /** |
| * public constructor of PNGEncoder class with greyscale mode by default. |
| * |
| * @param out output stream for PNG image format to write into |
| */ |
| public PNGEncoder(OutputStream out) { |
| this(out, GREYSCALE_MODE); |
| } |
| |
| /** |
| * public constructor of PNGEncoder class. |
| * |
| * @param out output stream for PNG image format to write into |
| * @param mode BW_MODE, GREYSCALE_MODE or COLOR_MODE |
| */ |
| public PNGEncoder(OutputStream out, byte mode) { |
| crc = new CRC32(); |
| this.out = out; |
| if (mode < 0 || mode > 2) { |
| throw new IllegalArgumentException("Unknown color mode"); |
| } |
| this.mode = mode; |
| } |
| |
| void write(int i) throws IOException { |
| byte b[] = {(byte) ((i >> 24) & 0xff), (byte) ((i >> 16) & 0xff), (byte) ((i >> 8) & 0xff), (byte) (i & 0xff)}; |
| write(b); |
| } |
| |
| void write(byte b[]) throws IOException { |
| out.write(b); |
| crc.update(b); |
| } |
| |
| /** |
| * main encoding method (stays blocked till encoding is finished). |
| * |
| * @param image BufferedImage to encode |
| * @throws IOException IOException |
| */ |
| public void encode(BufferedImage image) throws IOException { |
| int width = image.getWidth(null); |
| int height = image.getHeight(null); |
| final byte id[] = {-119, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13}; |
| write(id); |
| crc.reset(); |
| write("IHDR".getBytes()); |
| write(width); |
| write(height); |
| byte head[]; |
| switch (mode) { |
| case BW_MODE: |
| head = new byte[]{1, 0, 0, 0, 0}; |
| break; |
| case GREYSCALE_MODE: |
| head = new byte[]{8, 0, 0, 0, 0}; |
| break; |
| case COLOR_MODE: |
| head = new byte[]{8, 2, 0, 0, 0}; |
| break; |
| default: |
| throw new AssertionError("Unexpected mode: " + mode); |
| } |
| write(head); |
| write((int) crc.getValue()); |
| ByteArrayOutputStream compressed = new ByteArrayOutputStream(65536); |
| BufferedOutputStream bos = new BufferedOutputStream(new DeflaterOutputStream(compressed, new Deflater(9))); |
| int pixel; |
| int color; |
| int colorset; |
| switch (mode) { |
| case BW_MODE: |
| int rest = width % 8; |
| int bytes = width / 8; |
| for (int y = 0; y < height; y++) { |
| bos.write(0); |
| for (int x = 0; x < bytes; x++) { |
| colorset = 0; |
| for (int sh = 0; sh < 8; sh++) { |
| pixel = image.getRGB(x * 8 + sh, y); |
| color = ((pixel >> 16) & 0xff); |
| color += ((pixel >> 8) & 0xff); |
| color += (pixel & 0xff); |
| colorset <<= 1; |
| if (color >= 3 * 128) { |
| colorset |= 1; |
| } |
| } |
| bos.write((byte) colorset); |
| } |
| if (rest > 0) { |
| colorset = 0; |
| for (int sh = 0; sh < width % 8; sh++) { |
| pixel = image.getRGB(bytes * 8 + sh, y); |
| color = ((pixel >> 16) & 0xff); |
| color += ((pixel >> 8) & 0xff); |
| color += (pixel & 0xff); |
| colorset <<= 1; |
| if (color >= 3 * 128) { |
| colorset |= 1; |
| } |
| } |
| colorset <<= 8 - rest; |
| bos.write((byte) colorset); |
| } |
| } |
| break; |
| case GREYSCALE_MODE: |
| for (int y = 0; y < height; y++) { |
| bos.write(0); |
| for (int x = 0; x < width; x++) { |
| pixel = image.getRGB(x, y); |
| color = ((pixel >> 16) & 0xff); |
| color += ((pixel >> 8) & 0xff); |
| color += (pixel & 0xff); |
| bos.write((byte) (color / 3)); |
| } |
| } |
| break; |
| case COLOR_MODE: |
| for (int y = 0; y < height; y++) { |
| bos.write(0); |
| for (int x = 0; x < width; x++) { |
| pixel = image.getRGB(x, y); |
| bos.write((byte) ((pixel >> 16) & 0xff)); |
| bos.write((byte) ((pixel >> 8) & 0xff)); |
| bos.write((byte) (pixel & 0xff)); |
| } |
| } |
| break; |
| } |
| bos.close(); |
| write(compressed.size()); |
| crc.reset(); |
| write("IDAT".getBytes()); |
| write(compressed.toByteArray()); |
| write((int) crc.getValue()); |
| write(0); |
| crc.reset(); |
| write("IEND".getBytes()); |
| write((int) crc.getValue()); |
| out.close(); |
| } |
| |
| /** |
| * Static method performing screen capture into PNG image format file with |
| * given fileName. |
| * |
| * @param rect Rectangle of screen to be captured |
| * @param fileName file name for screen capture PNG image file |
| */ |
| public static void captureScreen(Rectangle rect, String fileName) { |
| captureScreen(rect, fileName, GREYSCALE_MODE); |
| } |
| |
| /** |
| * Static method performing screen capture into PNG image format file with |
| * given fileName. |
| * |
| * @param rect Rectangle of screen to be captured |
| * @param mode image color mode |
| * @param fileName file name for screen capture PNG image file |
| */ |
| public static void captureScreen(Rectangle rect, String fileName, byte mode) { |
| try { |
| BufferedImage capture = new Robot().createScreenCapture(rect); |
| BufferedOutputStream file = new BufferedOutputStream(new FileOutputStream(fileName)); |
| PNGEncoder encoder = new PNGEncoder(file, mode); |
| encoder.encode(capture); |
| } catch (AWTException awte) { |
| awte.printStackTrace(); |
| } catch (IOException ioe) { |
| ioe.printStackTrace(); |
| } |
| } |
| |
| /** |
| * Static method performing one component screen capture into PNG image |
| * format file with given fileName. |
| * |
| * @param comp Component to be captured |
| * @param fileName String image target filename |
| */ |
| public static void captureScreen(Component comp, String fileName) { |
| captureScreen(comp, fileName, GREYSCALE_MODE); |
| } |
| |
| /** |
| * Static method performing one component screen capture into PNG image |
| * format file with given fileName. |
| * |
| * @param comp Component to be captured |
| * @param fileName String image target filename |
| * @param mode image color mode |
| */ |
| public static void captureScreen(Component comp, String fileName, byte mode) { |
| captureScreen(new Rectangle(comp.getLocationOnScreen(), |
| comp.getSize()), |
| fileName, mode); |
| } |
| |
| /** |
| * Static method performing whole screen capture into PNG image format file |
| * with given fileName. |
| * |
| * @param fileName String image target filename |
| */ |
| public static void captureScreen(String fileName) { |
| captureScreen(fileName, GREYSCALE_MODE); |
| } |
| |
| /** |
| * Static method performing whole screen capture into PNG image format file |
| * with given fileName. |
| * |
| * @param fileName String image target filename |
| * @param mode image color mode |
| */ |
| public static void captureScreen(String fileName, byte mode) { |
| captureScreen(new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()), fileName, mode); |
| } |
| } |
