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view org.eclipse.swt.gtk.linux.x86/src/org/eclipse/swt/internal/image/PngIendChunk.d @ 125:c43718956f21 default tip
Updated the snippets status.
author | Jacob Carlborg <doob@me.com> |
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date | Thu, 11 Aug 2011 19:55:14 +0200 |
parents | 536e43f63c81 |
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/******************************************************************************* * 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 * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module org.eclipse.swt.internal.image.PngIendChunk; import org.eclipse.swt.SWT; import org.eclipse.swt.internal.image.PngFileReadState; import org.eclipse.swt.internal.image.PngIhdrChunk; import org.eclipse.swt.internal.image.PngChunk; class PngIendChunk : PngChunk { this() { super(0); setType(TYPE_IEND); setCRC(computeCRC()); } this(byte[] reference){ super(reference); } override int getChunkType() { return CHUNK_IEND; } /** * Answer whether the chunk is a valid IEND chunk. */ override void validate(PngFileReadState readState, PngIhdrChunk headerChunk) { // An IEND chunk is invalid if no IHDR has been read. // Or if a palette is required and has not been read. // Or if no IDAT chunk has been read. if (!readState.readIHDR || (headerChunk.getMustHavePalette() && !readState.readPLTE) || !readState.readIDAT || readState.readIEND) { SWT.error(SWT.ERROR_INVALID_IMAGE); } else { readState.readIEND = true; } super.validate(readState, headerChunk); // IEND chunks are not allowed to have any data. if (getLength() > 0) SWT.error(SWT.ERROR_INVALID_IMAGE); } }