1 files changed, 108 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/image/FileFormat.java b/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/image/FileFormat.java
new file mode 100755
index 0000000000..1bf2ae1d80
--- /dev/null
+++ b/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/image/FileFormat.java
@@ -0,0 +1,108 @@
+package org.eclipse.swt.internal.image;
+
+/*
+ * Licensed Materials - Property of IBM,
+ * WebSphere Studio Workbench
+ * (c) Copyright IBM Corp 2000
+ */
+
+/* Imports */
+import java.io.*;
+import org.eclipse.swt.*;
+import org.eclipse.swt.graphics.*;
+
+/* Class Definition */
+public abstract class FileFormat {
+	LEDataInputStream inputStream;
+	LEDataOutputStream outputStream;
+	ImageLoader loader;
+byte[] bitInvertData(byte[] data, int startIndex, int endIndex) {
+	// Destructively bit invert data in the given byte array.
+	for (int i = startIndex; i < endIndex; i++) {
+		data[i] = (byte)(255 - data[i - startIndex]);
+	}
+	return data;
+}
+
+abstract ImageData[] loadFromByteStream();
+
+public ImageData[] loadFromStream(LEDataInputStream stream) {
+	try {
+		inputStream = stream;
+		return loadFromByteStream();
+	} catch (Exception e) {
+		SWT.error(SWT.ERROR_IO, e);
+		return null;
+	}
+}
+public static ImageData[] load(InputStream is, ImageLoader loader) {
+	FileFormat fileFormat = null;
+	LEDataInputStream stream = new LEDataInputStream(is);
+	if (GIFFileFormat.isGIFFile(stream)) {
+		fileFormat = new GIFFileFormat();
+	} else if (WinBMPFileFormat.isBMPFile(stream)) {
+		fileFormat = new WinBMPFileFormat();
+	} else if (WinICOFileFormat.isICOFile(stream)) {
+		fileFormat = new WinICOFileFormat();
+	} else if (JPEGFileFormat.isJPEGFile(stream)) {
+		fileFormat = new JPEGFileFormat();
+	} else if (PNGFileFormat.isPNGFile(stream)) {
+		fileFormat = new PNGFileFormat();
+	} else {
+		SWT.error(SWT.ERROR_UNSUPPORTED_FORMAT);
+	}
+	fileFormat.loader = loader;
+	return fileFormat.loadFromStream(stream);
+}
+public static void save(OutputStream os, int format, ImageLoader loader) {
+	/* We do not currently support writing multi-image files,
+	 * so we use the first image data in the loader's array. */
+	ImageData data = loader.data[0];
+	LEDataOutputStream stream = new LEDataOutputStream(os);
+	switch (format) {
+		case SWT.IMAGE_BMP:
+			WinBMPFileFormat f = new WinBMPFileFormat();
+			f.unloadIntoStream(data, stream);
+			break;
+		case SWT.IMAGE_BMP_RLE:
+			f = new WinBMPFileFormat();
+			if (data.depth == 8)
+				f.compression = 1;
+			if (data.depth == 4)
+				f.compression = 2;
+			f.unloadIntoStream(data, stream);
+			break;
+		case SWT.IMAGE_GIF:
+			GIFFileFormat g = new GIFFileFormat();
+			g.unloadIntoStream(data, stream);
+			break;
+		case SWT.IMAGE_ICO:
+			WinICOFileFormat i = new WinICOFileFormat();
+			i.unloadIntoStream(data, stream);
+			break;
+		case SWT.IMAGE_JPEG:
+			JPEGFileFormat j = new JPEGFileFormat();
+			j.unloadIntoStream(data, stream);
+			break;
+		case SWT.IMAGE_PNG:
+			PNGFileFormat p = new PNGFileFormat();
+			p.unloadIntoStream(data, stream);
+			break;
+		default:
+			SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+	}
+}
+
+abstract void unloadIntoByteStream(ImageData image);
+
+public void unloadIntoStream(ImageData image, LEDataOutputStream stream) {
+	try {
+		outputStream = stream;
+		unloadIntoByteStream(image);
+		outputStream.close();
+	} catch (Exception e) {
+		try {outputStream.close();} catch (Exception f) {}
+		SWT.error(SWT.ERROR_IO, e);
+	}
+}
+}