1 files changed, 0 insertions, 408 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/image/PngIhdrChunk.java b/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/image/PngIhdrChunk.java
deleted file mode 100755
index 37d550883e..0000000000
--- a/bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/image/PngIhdrChunk.java
+++ /dev/null
@@ -1,408 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2000, 2006 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- *     IBM Corporation - initial API and implementation
- *******************************************************************************/
-package org.eclipse.swt.internal.image;
-
-
-import org.eclipse.swt.*;
-import org.eclipse.swt.graphics.*;
-
-class PngIhdrChunk extends PngChunk {
-	static final int IHDR_DATA_LENGTH = 13;
-	
-	static final int WIDTH_DATA_OFFSET = DATA_OFFSET + 0;
-	static final int HEIGHT_DATA_OFFSET = DATA_OFFSET + 4;
-	static final int BIT_DEPTH_OFFSET = DATA_OFFSET + 8;
-	static final int COLOR_TYPE_OFFSET = DATA_OFFSET + 9;
-	static final int COMPRESSION_METHOD_OFFSET = DATA_OFFSET + 10;
-	static final int FILTER_METHOD_OFFSET = DATA_OFFSET + 11;
-	static final int INTERLACE_METHOD_OFFSET = DATA_OFFSET + 12;
-	
-	static final byte COLOR_TYPE_GRAYSCALE = 0;
-	static final byte COLOR_TYPE_RGB = 2;
-	static final byte COLOR_TYPE_PALETTE = 3;
-	static final byte COLOR_TYPE_GRAYSCALE_WITH_ALPHA = 4;
-	static final byte COLOR_TYPE_RGB_WITH_ALPHA = 6;
-	
-	static final int INTERLACE_METHOD_NONE = 0;
-	static final int INTERLACE_METHOD_ADAM7 = 1;
-	
-	static final int FILTER_NONE = 0;
-	static final int FILTER_SUB = 1;
-	static final int FILTER_UP = 2;
-	static final int FILTER_AVERAGE = 3;
-	static final int FILTER_PAETH = 4;
-	
-	static final byte[] ValidBitDepths = {1, 2, 4, 8, 16};
-	static final byte[] ValidColorTypes = {0, 2, 3, 4, 6};
-	
-	int width, height;
-	byte bitDepth, colorType, compressionMethod, filterMethod, interlaceMethod;
-	
-PngIhdrChunk(int width, int height, byte bitDepth, byte colorType, byte compressionMethod, byte filterMethod, byte interlaceMethod) {
-	super(IHDR_DATA_LENGTH);
-	setType(TYPE_IHDR);
-	setWidth(width);
-	setHeight(height);
-	setBitDepth(bitDepth);
-	setColorType(colorType);
-	setCompressionMethod(compressionMethod);
-	setFilterMethod(filterMethod);
-	setInterlaceMethod(interlaceMethod);
-	setCRC(computeCRC());
-}
-
-/**
- * Construct a PNGChunk using the reference bytes
- * given.
- */	
-PngIhdrChunk(byte[] reference) {
-	super(reference);
-	if (reference.length <= IHDR_DATA_LENGTH) SWT.error(SWT.ERROR_INVALID_IMAGE);
-	width = getInt32(WIDTH_DATA_OFFSET);
-	height = getInt32(HEIGHT_DATA_OFFSET);
-	bitDepth = reference[BIT_DEPTH_OFFSET];
-	colorType = reference[COLOR_TYPE_OFFSET];
-	compressionMethod = reference[COMPRESSION_METHOD_OFFSET];
-	filterMethod = reference[FILTER_METHOD_OFFSET];
-	interlaceMethod = reference[INTERLACE_METHOD_OFFSET];
-}
-
-int getChunkType() {
-	return CHUNK_IHDR;
-}
-
-/**
- * Get the image's width in pixels.
- */
-int getWidth() {
-	return width;
-}
-
-/**
- * Set the image's width in pixels.
- */
-void setWidth(int value) {
-	setInt32(WIDTH_DATA_OFFSET, value);
-	width = value;
-}
-
-/**
- * Get the image's height in pixels.
- */
-int getHeight() {
-	return height;
-}
-
-/**
- * Set the image's height in pixels.
- */
-void setHeight(int value) {
-	setInt32(HEIGHT_DATA_OFFSET, value);
-	height = value;
-}
-
-/**
- * Get the image's bit depth.
- * This is limited to the values 1, 2, 4, 8, or 16.
- */
-byte getBitDepth() {
-	return bitDepth;
-}
-
-/**
- * Set the image's bit depth.
- * This is limited to the values 1, 2, 4, 8, or 16.
- */
-void setBitDepth(byte value) {
-	reference[BIT_DEPTH_OFFSET] = value;
-	bitDepth = value;
-}
-
-/**
- * Get the image's color type.
- * This is limited to the values:
- * 0 - Grayscale image.
- * 2 - RGB triple.
- * 3 - Palette.
- * 4 - Grayscale with Alpha channel.
- * 6 - RGB with Alpha channel.
- */
-byte getColorType() {
-	return colorType;
-}
-
-/**
- * Set the image's color type.
- * This is limited to the values:
- * 0 - Grayscale image.
- * 2 - RGB triple.
- * 3 - Palette.
- * 4 - Grayscale with Alpha channel.
- * 6 - RGB with Alpha channel.
- */
-void setColorType(byte value) {
-	reference[COLOR_TYPE_OFFSET] = value;
-	colorType = value;
-}
-
-/**
- * Get the image's compression method.
- * This value must be 0.
- */
-byte getCompressionMethod() {
-	return compressionMethod;
-}
-
-/**
- * Set the image's compression method.
- * This value must be 0.
- */
-void setCompressionMethod(byte value) {
-	reference[COMPRESSION_METHOD_OFFSET] = value;
-	compressionMethod = value;
-}
-
-/**
- * Get the image's filter method.
- * This value must be 0.
- */
-byte getFilterMethod() {
-	return filterMethod;
-}
-
-/**
- * Set the image's filter method.
- * This value must be 0.
- */
-void setFilterMethod(byte value) {
-	reference[FILTER_METHOD_OFFSET] = value;
-	filterMethod = value;
-}
-
-/**
- * Get the image's interlace method.
- * This value is limited to:
- * 0 - No interlacing used.
- * 1 - Adam7 interlacing used.
- */
-byte getInterlaceMethod() {
-	return interlaceMethod;
-}
-
-/**
- * Set the image's interlace method.
- * This value is limited to:
- * 0 - No interlacing used.
- * 1 - Adam7 interlacing used.
- */
-void setInterlaceMethod(byte value) {
-	reference[INTERLACE_METHOD_OFFSET] = value;
-	interlaceMethod = value;
-}
-
-/**
- * Answer whether the chunk is a valid IHDR chunk.
- */
-void validate(PngFileReadState readState, PngIhdrChunk headerChunk) {
-	// An IHDR chunk is invalid if any other chunk has
-	// been read.
-	if (readState.readIHDR 
-		|| readState.readPLTE
-		|| readState.readIDAT
-		|| readState.readIEND) 
-	{
-		SWT.error(SWT.ERROR_INVALID_IMAGE);
-	} else {
-		readState.readIHDR = true;
-	}
-	
-	super.validate(readState, headerChunk);
-	
-	if (length != IHDR_DATA_LENGTH) SWT.error(SWT.ERROR_INVALID_IMAGE);
-	if (compressionMethod != 0) SWT.error(SWT.ERROR_INVALID_IMAGE);
-	if (interlaceMethod != INTERLACE_METHOD_NONE &&
-		interlaceMethod != INTERLACE_METHOD_ADAM7) {
-			SWT.error(SWT.ERROR_INVALID_IMAGE);
-	}
-	
-	boolean colorTypeIsValid = false;
-	for (int i = 0; i < ValidColorTypes.length; i++) {
-		if (ValidColorTypes[i] == colorType) {
-			colorTypeIsValid = true;
-			break;
-		}
-	}
-	if (!colorTypeIsValid) SWT.error(SWT.ERROR_INVALID_IMAGE);
-
-	boolean bitDepthIsValid = false;
-	for (int i = 0; i < ValidBitDepths.length; i++) {
-		if (ValidBitDepths[i] == bitDepth) {
-			bitDepthIsValid = true;
-			break;
-		}
-	}
-	if (!bitDepthIsValid) SWT.error(SWT.ERROR_INVALID_IMAGE);
-	
-	if ((colorType == COLOR_TYPE_RGB 
-		|| colorType == COLOR_TYPE_RGB_WITH_ALPHA
-		|| colorType == COLOR_TYPE_GRAYSCALE_WITH_ALPHA)
-		&& bitDepth < 8) 
-	{
-			SWT.error(SWT.ERROR_INVALID_IMAGE);
-	}
-	
-	if (colorType == COLOR_TYPE_PALETTE && bitDepth > 8) {
-		SWT.error(SWT.ERROR_INVALID_IMAGE);
-	}
-}
-
-String getColorTypeString() {
-	switch (colorType) {
-		case COLOR_TYPE_GRAYSCALE: 				return "Grayscale";
-		case COLOR_TYPE_RGB: 					return "RGB";		
-		case COLOR_TYPE_PALETTE:				return "Palette";
-		case COLOR_TYPE_GRAYSCALE_WITH_ALPHA:	return "Grayscale with Alpha";
-		case COLOR_TYPE_RGB_WITH_ALPHA:			return "RGB with Alpha";
-		default:								return "Unknown - " + colorType;
-	}
-}
-
-String getFilterMethodString() {
-	switch (filterMethod) {
-		case FILTER_NONE:		return "None";
-		case FILTER_SUB:		return "Sub";
-		case FILTER_UP:			return "Up";
-		case FILTER_AVERAGE:	return "Average";
-		case FILTER_PAETH:		return "Paeth";
-		default:				return "Unknown";
-	}
-}
-
-String getInterlaceMethodString() {
-	switch (interlaceMethod) {
-		case INTERLACE_METHOD_NONE: 	return "Not Interlaced";
-		case INTERLACE_METHOD_ADAM7:	return "Interlaced - ADAM7";
-		default:				return "Unknown";
-	}
-}
-
-void contributeToString(StringBuffer buffer) {
-	buffer.append("\n\tWidth: ");
-	buffer.append(width);
-	buffer.append("\n\tHeight: ");
-	buffer.append(height);
-	buffer.append("\n\tBit Depth: ");
-	buffer.append(bitDepth);
-	buffer.append("\n\tColor Type: ");
-	buffer.append(getColorTypeString());
-	buffer.append("\n\tCompression Method: ");
-	buffer.append(compressionMethod);
-	buffer.append("\n\tFilter Method: ");
-	buffer.append(getFilterMethodString());
-	buffer.append("\n\tInterlace Method: ");
-	buffer.append(getInterlaceMethodString());
-}
-
-boolean getMustHavePalette() {
-	return colorType == COLOR_TYPE_PALETTE;
-}
-
-boolean getCanHavePalette() {
-	return colorType != COLOR_TYPE_GRAYSCALE && 
-		colorType != COLOR_TYPE_GRAYSCALE_WITH_ALPHA;
-}
-
-/**
- * Answer the pixel size in bits based on the color type
- * and bit depth.
- */
-int getBitsPerPixel() {
-	switch (colorType) {
-		case COLOR_TYPE_RGB_WITH_ALPHA:
-			return 4 * bitDepth;
-		case COLOR_TYPE_RGB:
-			return 3 * bitDepth;
-		case COLOR_TYPE_GRAYSCALE_WITH_ALPHA:
-			return 2 * bitDepth;
-		case COLOR_TYPE_GRAYSCALE:
-		case COLOR_TYPE_PALETTE:
-			return bitDepth;
-		default:
-			SWT.error(SWT.ERROR_INVALID_IMAGE);
-			return 0;
-	}
-}
-
-/**
- * Answer the pixel size in bits based on the color type
- * and bit depth.
- */
-int getSwtBitsPerPixel() {
-	switch (colorType) {
-		case COLOR_TYPE_RGB_WITH_ALPHA:
-		case COLOR_TYPE_RGB:
-		case COLOR_TYPE_GRAYSCALE_WITH_ALPHA:
-			return 24;
-		case COLOR_TYPE_GRAYSCALE:
-		case COLOR_TYPE_PALETTE:
-			return Math.min(bitDepth, 8);
-		default:
-			SWT.error(SWT.ERROR_INVALID_IMAGE);
-			return 0;
-	}
-}
-
-int getFilterByteOffset() {
-	if (bitDepth < 8) return 1;
-	return getBitsPerPixel() / 8;
-}
-
-boolean usesDirectColor() {
-	switch (colorType) {
-		case COLOR_TYPE_GRAYSCALE:
-		case COLOR_TYPE_GRAYSCALE_WITH_ALPHA:
-		case COLOR_TYPE_RGB:
-		case COLOR_TYPE_RGB_WITH_ALPHA:
-			return true;
-		default:
-			return false;
-	}
-}
-
-PaletteData createGrayscalePalette() {
-	int depth = Math.min(bitDepth, 8);
-	int max = (1 << depth) - 1;
-	int delta = 255 / max;
-	int gray = 0;
-	RGB[] rgbs = new RGB[max + 1]; 
-	for (int i = 0; i <= max; i++) {
-		rgbs[i] = new RGB(gray, gray, gray);
-		gray += delta;
-	}
-	return new PaletteData(rgbs);
-}
-
-PaletteData getPaletteData() {
-	switch (colorType) {
-		case COLOR_TYPE_GRAYSCALE:
-			return createGrayscalePalette();
-		case COLOR_TYPE_GRAYSCALE_WITH_ALPHA:
-		case COLOR_TYPE_RGB:
-		case COLOR_TYPE_RGB_WITH_ALPHA:
-			return new PaletteData(0xFF0000, 0xFF00, 0xFF);
-		default:
-			return null;
-	}	
-}
-
-
-
-}