Move ImageConverter and Unzipper to utils package

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-over/trunk@153 174cde9d-5d70-4d2a-aa98-46368bc2aaf7

2 files changed, 250 insertions, 0 deletions

diff --git a/pdf-over-gui/src/main/java/at/asit/pdfover/utils/ImageConverter.java b/pdf-over-gui/src/main/java/at/asit/pdfover/utils/ImageConverter.java
new file mode 100644
index 00000000..91d11157
--- /dev/null
+++ b/pdf-over-gui/src/main/java/at/asit/pdfover/utils/ImageConverter.java
@@ -0,0 +1,175 @@
+/*
+ * Copyright 2012 by A-SIT, Secure Information Technology Center Austria
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://joinup.ec.europa.eu/software/page/eupl
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ */
+package at.asit.pdfover.utils;
+
+// Imports
+import java.awt.image.BufferedImage;
+import java.awt.image.ColorModel;
+import java.awt.image.ComponentColorModel;
+import java.awt.image.DirectColorModel;
+import java.awt.image.IndexColorModel;
+import java.awt.image.WritableRaster;
+
+import org.eclipse.swt.graphics.ImageData;
+import org.eclipse.swt.graphics.PaletteData;
+import org.eclipse.swt.graphics.RGB;
+
+/**
+ * 
+ */
+public class ImageConverter {
+	
+	/**
+	 * Convert Image Data to AWT Image
+	 * @param data
+	 * @return AWT Image
+	 */
+	public static BufferedImage convertToAWT(ImageData data) {
+		ColorModel colorModel = null;
+		PaletteData palette = data.palette;
+		if (palette.isDirect) {
+			colorModel = new DirectColorModel(data.depth, palette.redMask,
+					palette.greenMask, palette.blueMask);
+			BufferedImage bufferedImage = new BufferedImage(colorModel,
+					colorModel.createCompatibleWritableRaster(data.width,
+							data.height), false, null);
+			WritableRaster raster = bufferedImage.getRaster();
+			int[] pixelArray = new int[3];
+			for (int y = 0; y < data.height; y++) {
+				for (int x = 0; x < data.width; x++) {
+					int pixel = data.getPixel(x, y);
+					RGB rgb = palette.getRGB(pixel);
+					pixelArray[0] = rgb.red;
+					pixelArray[1] = rgb.green;
+					pixelArray[2] = rgb.blue;
+					raster.setPixels(x, y, 1, 1, pixelArray);
+				}
+			}
+			return bufferedImage;
+		}
+		RGB[] rgbs = palette.getRGBs();
+		byte[] red = new byte[rgbs.length];
+		byte[] green = new byte[rgbs.length];
+		byte[] blue = new byte[rgbs.length];
+		for (int i = 0; i < rgbs.length; i++) {
+			RGB rgb = rgbs[i];
+			red[i] = (byte) rgb.red;
+			green[i] = (byte) rgb.green;
+			blue[i] = (byte) rgb.blue;
+		}
+		if (data.transparentPixel != -1) {
+			colorModel = new IndexColorModel(data.depth, rgbs.length, red,
+					green, blue, data.transparentPixel);
+		} else {
+			colorModel = new IndexColorModel(data.depth, rgbs.length, red,
+					green, blue);
+		}
+		BufferedImage bufferedImage = new BufferedImage(colorModel,
+				colorModel.createCompatibleWritableRaster(data.width,
+						data.height), false, null);
+		WritableRaster raster = bufferedImage.getRaster();
+		int[] pixelArray = new int[1];
+		for (int y = 0; y < data.height; y++) {
+			for (int x = 0; x < data.width; x++) {
+				int pixel = data.getPixel(x, y);
+				pixelArray[0] = pixel;
+				raster.setPixel(x, y, pixelArray);
+			}
+		}
+		return bufferedImage;
+
+	}
+
+	/**
+	 * Convert AWT Image to SWT Image
+	 * 
+	 * @param bufferedImage
+	 * @return SWT Image data
+	 */
+	public static ImageData convertToSWT(final BufferedImage bufferedImage) {
+		if (bufferedImage.getColorModel() instanceof DirectColorModel) {
+			DirectColorModel colorModel = (DirectColorModel) bufferedImage
+					.getColorModel();
+			PaletteData palette = new PaletteData(colorModel.getRedMask(),
+					colorModel.getGreenMask(), colorModel.getBlueMask());
+			ImageData data = new ImageData(bufferedImage.getWidth(),
+					bufferedImage.getHeight(), colorModel.getPixelSize(),
+					palette);
+			WritableRaster raster = bufferedImage.getRaster();
+			int[] pixelArray = new int[3];
+			for (int y = 0; y < data.height; y++) {
+				for (int x = 0; x < data.width; x++) {
+					raster.getPixel(x, y, pixelArray);
+					int pixel = palette.getPixel(new RGB(pixelArray[0],
+							pixelArray[1], pixelArray[2]));
+					data.setPixel(x, y, pixel);
+				}
+			}
+			return data;
+		} else if (bufferedImage.getColorModel() instanceof IndexColorModel) {
+			IndexColorModel colorModel = (IndexColorModel) bufferedImage
+					.getColorModel();
+			int size = colorModel.getMapSize();
+			byte[] reds = new byte[size];
+			byte[] greens = new byte[size];
+			byte[] blues = new byte[size];
+			colorModel.getReds(reds);
+			colorModel.getGreens(greens);
+			colorModel.getBlues(blues);
+			RGB[] rgbs = new RGB[size];
+			for (int i = 0; i < rgbs.length; i++) {
+				rgbs[i] = new RGB(reds[i] & 0xFF, greens[i] & 0xFF,
+						blues[i] & 0xFF);
+			}
+			PaletteData palette = new PaletteData(rgbs);
+			ImageData data = new ImageData(bufferedImage.getWidth(),
+					bufferedImage.getHeight(), colorModel.getPixelSize(),
+					palette);
+			data.transparentPixel = colorModel.getTransparentPixel();
+			WritableRaster raster = bufferedImage.getRaster();
+			int[] pixelArray = new int[1];
+			for (int y = 0; y < data.height; y++) {
+				for (int x = 0; x < data.width; x++) {
+					raster.getPixel(x, y, pixelArray);
+					data.setPixel(x, y, pixelArray[0]);
+				}
+			}
+			return data;
+		} else if (bufferedImage.getColorModel() instanceof ComponentColorModel) {
+		    ComponentColorModel colorModel = (ComponentColorModel)bufferedImage.getColorModel();
+
+		    //ASSUMES: 3 BYTE BGR IMAGE TYPE
+
+		    PaletteData palette = new PaletteData(0x0000FF, 0x00FF00,0xFF0000);
+		    ImageData data = new ImageData(bufferedImage.getWidth(), bufferedImage.getHeight(), colorModel.getPixelSize(), palette);
+
+		    //This is valid because we are using a 3-byte Data model with no transparent pixels
+		    data.transparentPixel = -1;
+
+		    WritableRaster raster = bufferedImage.getRaster();
+		    int[] pixelArray = new int[3];
+		    for (int y = 0; y < data.height; y++) {
+		        for (int x = 0; x < data.width; x++) {
+		            raster.getPixel(x, y, pixelArray);
+		            int pixel = palette.getPixel(new RGB(pixelArray[0], pixelArray[1], pixelArray[2]));
+		            data.setPixel(x, y, pixel);
+		        }
+		    }
+		    return data;
+		}
+		return null;
+	}
+}
diff --git a/pdf-over-gui/src/main/java/at/asit/pdfover/utils/Unzipper.java b/pdf-over-gui/src/main/java/at/asit/pdfover/utils/Unzipper.java
new file mode 100644
index 00000000..b40cf3d9
--- /dev/null
+++ b/pdf-over-gui/src/main/java/at/asit/pdfover/utils/Unzipper.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2012 by A-SIT, Secure Information Technology Center Austria
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://joinup.ec.europa.eu/software/page/eupl
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ */
+package at.asit.pdfover.utils;
+
+// Imports
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Unzipper to extract default configuration
+ */
+public class Unzipper {
+	/**
+	 * SLF4J Logger instance
+	 **/
+	private static final Logger log = LoggerFactory.getLogger(Unzipper.class);
+
+	/**
+	 * Extracts Zip File input stream to target path 
+	 * @param is
+	 * @param targetPath
+	 * @throws IOException
+	 */
+	public static void unzip(InputStream is, String targetPath) throws IOException {
+		ZipInputStream zis = new ZipInputStream(is);
+		ZipEntry entry;
+		// while there are entries I process them
+		while ((entry = zis.getNextEntry()) != null) {
+			log.debug("entry: " + entry.getName() + ", "  //$NON-NLS-1$//$NON-NLS-2$
+					+ entry.getSize());
+			// consume all the data from this entry
+
+			if (entry.isDirectory()) {
+				log.debug("Extracting directory: " + entry.getName()); //$NON-NLS-1$
+				
+				File nDir =new File(targetPath + "/" + entry.getName()); //$NON-NLS-1$
+				if(!nDir.exists()) {
+					if(!nDir.mkdir()) {
+						throw new IOException("Failed to create dir: " + entry.getName()); //$NON-NLS-1$
+					}
+				}
+				continue;
+			}
+			byte[] buffer = new byte[1024];
+			int len;
+			BufferedOutputStream out = new BufferedOutputStream(
+					new FileOutputStream(targetPath + "/" + entry.getName())); //$NON-NLS-1$
+			while ((len = zis.read(buffer)) >= 0)
+				out.write(buffer, 0, len);
+			
+			out.close();
+		}
+	}
+}