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view org.eclipse.swt.gtk.linux.x86/src/org/eclipse/swt/internal/image/JPEGScanHeader.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 | f713da8bc051 |
children |
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/******************************************************************************* * Copyright (c) 2000, 2005 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.JPEGScanHeader; import org.eclipse.swt.SWT; import org.eclipse.swt.internal.image.JPEGVariableSizeSegment; import org.eclipse.swt.internal.image.LEDataInputStream; import org.eclipse.swt.internal.image.JPEGFileFormat; import java.lang.all; final class JPEGScanHeader : JPEGVariableSizeSegment { public int[][] componentParameters; public this(byte[] reference) { super(reference); } public this(LEDataInputStream byteStream) { super(byteStream); initializeComponentParameters(); } public int getApproxBitPositionHigh() { return reference[(2 * getNumberOfImageComponents()) + 7] >> 4; } public int getApproxBitPositionLow() { return reference[(2 * getNumberOfImageComponents()) + 7] & 0xF; } public int getEndOfSpectralSelection() { return reference[(2 * getNumberOfImageComponents()) + 6]; } public int getNumberOfImageComponents() { return reference[4]; } public int getStartOfSpectralSelection() { return reference[(2 * getNumberOfImageComponents()) + 5]; } /* Used when decoding. */ void initializeComponentParameters() { int compCount = getNumberOfImageComponents(); componentParameters = null; for (int i = 0; i < compCount; i++) { int ofs = 5 + i * 2; int cid = reference[ofs] & 0xFF; int dc = (reference[ofs + 1] & 0xFF) >> 4; int ac = reference[ofs + 1] & 0xF; if (componentParameters.length <= cid) { int[][] newParams = new int[][](cid + 1); System.arraycopy(componentParameters, 0, newParams, 0, componentParameters.length); componentParameters = newParams; } componentParameters[cid] = [ dc, ac ]; } } /* Used when encoding. */ public void initializeContents() { int compCount = getNumberOfImageComponents(); int[][] compSpecParams = componentParameters; if (compCount is 0 || compCount !is compSpecParams.length) { SWT.error(SWT.ERROR_INVALID_IMAGE); } for (int i = 0; i < compCount; i++) { int ofs = i * 2 + 5; int[] compParams = compSpecParams[i]; reference[ofs] = cast(byte)(i + 1); reference[ofs + 1] = cast(byte)(compParams[0] * 16 + compParams[1]); } } public void setEndOfSpectralSelection(int anInteger) { reference[(2 * getNumberOfImageComponents()) + 6] = cast(byte)anInteger; } public void setNumberOfImageComponents(int anInteger) { reference[4] = cast(byte)(anInteger & 0xFF); } public void setStartOfSpectralSelection(int anInteger) { reference[(2 * getNumberOfImageComponents()) + 5] = cast(byte)anInteger; } public override int signature() { return JPEGFileFormat.SOS; } public bool verifyProgressiveScan() { int start = getStartOfSpectralSelection(); int end = getEndOfSpectralSelection(); int low = getApproxBitPositionLow(); int high = getApproxBitPositionHigh(); int count = getNumberOfImageComponents(); if ((start is 0 && end is 00) || (start <= end && end <= 63)) { if (low <= 13 && high <= 13 && (high is 0 || high is low + 1)) { return start is 0 || (start > 0 && count is 1); } } return false; } public bool isACProgressiveScan() { return getStartOfSpectralSelection() !is 0 && getEndOfSpectralSelection() !is 0; } public bool isDCProgressiveScan() { return getStartOfSpectralSelection() is 0 && getEndOfSpectralSelection() is 0; } public bool isFirstScan() { return getApproxBitPositionHigh() is 0; } }