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view org.eclipse.swt.gtk.linux.x86/src/org/eclipse/swt/internal/image/PngHuffmanTables.d @ 120:536e43f63c81
Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661
===D2===
* added [Try]Immutable/Const/Shared templates to work with differenses in D1/D2 instead of version statements
used these templates to work with strict type storage rules of dmd-2.053
* com.ibm.icu now also compilable with D2, but not tested yet
* small fixes
Snippet288 - shared data is in TLS
===Phobos===
* fixed critical bugs in Phobos implemention
completely incorrect segfault prone fromStringz (Linux's port ruthless killer)
terrible, incorrect StringBuffer realization (StyledText killer)
* fixed small bugs as well
Snippet72 - misprint in the snippet
* implemented missed functionality for Phobos
ByteArrayOutputStream implemented (image loading available)
formatting correctly works for all DWT's cases
As a result, folowing snippets now works with Phobos (Snippet### - what is fixed):
Snippet24, 42, 111, 115, 130, 235, 276 - bad string formatting
Snippet48, 282 - crash on image loading
Snippet163, 189, 211, 213, 217, 218, 222 - crash on copy/cut in StyledText
Snippet244 - hang-up
===Tango===
* few changes for the latest Tango trunc-r5661
* few small performance improvments
===General===
* implMissing-s for only one version changed to implMissingInTango/InPhobos
* incorrect calls to Format in toString-s fixed
* fixed loading \uXXXX characters in ResourceBundle
* added good UTF-8 support for StyledText, TextLayout (Win32) and friends
UTF functions revised and tested. It is now in java.nonstandard.*Utf modules
StyledText and TextLayout (Win32) modules revised for UTF-8 support
* removed small diferences in most identical files in *.swt.* folders
*.swt.internal.image, *.swt.events and *.swt.custom are identical in Win32/Linux32
now 179 of 576 (~31%) files in *.swt.* folders are fully identical
* Win32: snippets now have right subsystem, pretty icons and native system style controls
* small fixes in snippets
Snippet44 - it's not Snippet44
Snippet212 - functions work with different images and offsets arrays
Win32: Snippet282 - crash on close if the button has an image
Snippet293 - setGrayed is commented
and others
Win32: As a result, folowing snippets now works
Snippet68 - color doesn't change
Snippet163, 189, 211, 213, 217, 218, 222 - UTF-8 issues (see above)
Snippet193 - no tabel headers
author | Denis Shelomovskij <verylonglogin.reg@gmail.com> |
---|---|
date | Sat, 09 Jul 2011 15:50:20 +0300 |
parents | 7a2dd761a8b2 |
children |
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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.PngHuffmanTables; import org.eclipse.swt.internal.image.PngHuffmanTable; import org.eclipse.swt.internal.image.PngDecodingDataStream; import org.eclipse.swt.internal.image.PngLzBlockReader; public class PngHuffmanTables { PngHuffmanTable literalTable; PngHuffmanTable distanceTable; static PngHuffmanTable FixedLiteralTable; static PngHuffmanTable FixedDistanceTable; static const int LiteralTableSize = 288; static int[] FixedLiteralLengths = [ 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, ]; static const int DistanceTableSize = 32; static int[] FixedDistanceLengths = [ 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, ]; static const int LengthCodeTableSize = 19; static const int[] LengthCodeOrder = [ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ]; static PngHuffmanTables getDynamicTables(PngDecodingDataStream stream) { return new PngHuffmanTables(stream); } static PngHuffmanTables getFixedTables() { return new PngHuffmanTables(); } private PngHuffmanTable getFixedLiteralTable() { if (FixedLiteralTable is null) { FixedLiteralTable = new PngHuffmanTable(FixedLiteralLengths); } return FixedLiteralTable; } private PngHuffmanTable getFixedDistanceTable() { if (FixedDistanceTable is null) { FixedDistanceTable = new PngHuffmanTable(FixedDistanceLengths); } return FixedDistanceTable; } private this () { literalTable = getFixedLiteralTable(); distanceTable = getFixedDistanceTable(); } private this (PngDecodingDataStream stream) { int literals = PngLzBlockReader.FIRST_LENGTH_CODE + stream.getNextIdatBits(5); int distances = PngLzBlockReader.FIRST_DISTANCE_CODE + stream.getNextIdatBits(5); int codeLengthCodes = PngLzBlockReader.FIRST_CODE_LENGTH_CODE + stream.getNextIdatBits(4); if (codeLengthCodes > PngLzBlockReader.LAST_CODE_LENGTH_CODE) { stream.error(); } /* Tricky, tricky, tricky. The length codes are stored in * a very odd order. (For the order, see the definition of * the static field lengthCodeOrder.) Also, the data may * not contain values for all the codes. It may just contain * values for the first X number of codes. The table should * be of size <LengthCodeTableSize> regardless of the number * of values actually given in the table. */ int[] lengthCodes = new int[LengthCodeTableSize]; for (int i = 0; i < codeLengthCodes; i++) { lengthCodes[LengthCodeOrder[i]] = stream.getNextIdatBits(3); } PngHuffmanTable codeLengthsTable = new PngHuffmanTable(lengthCodes); int[] literalLengths = readLengths( stream, literals, codeLengthsTable, LiteralTableSize); int[] distanceLengths = readLengths( stream, distances, codeLengthsTable, DistanceTableSize); literalTable = new PngHuffmanTable(literalLengths); distanceTable = new PngHuffmanTable(distanceLengths); } private int [] readLengths (PngDecodingDataStream stream, int numLengths, PngHuffmanTable lengthsTable, int tableSize) { int[] lengths = new int[tableSize]; for (int index = 0; index < numLengths;) { int value = lengthsTable.getNextValue(stream); if (value < 16) { // Literal value lengths[index] = value; index++; } else if (value is 16) { // Repeat the previous code 3-6 times. int count = stream.getNextIdatBits(2) + 3; for (int i = 0; i < count; i++) { lengths[index] = lengths [index - 1]; index++; } } else if (value is 17) { // Repeat 0 3-10 times. int count = stream.getNextIdatBits(3) + 3; for (int i = 0; i < count; i++) { lengths[index] = 0; index++; } } else if (value is 18) { // Repeat 0 11-138 times. int count = stream.getNextIdatBits(7) + 11; for (int i = 0; i < count; i++) { lengths[index] = 0; index++; } } else { stream.error(); } } return lengths; } int getNextLiteralValue(PngDecodingDataStream stream) { return literalTable.getNextValue(stream); } int getNextDistanceValue(PngDecodingDataStream stream) { return distanceTable.getNextValue(stream); } }