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view org.eclipse.swt.gtk.linux.x86/src/org/eclipse/swt/internal/image/PngPlteChunk.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 | f589fc20a5f9 |
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.PngPlteChunk; import java.lang.all; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.PaletteData; import org.eclipse.swt.graphics.RGB; import org.eclipse.swt.internal.image.PngChunk; import org.eclipse.swt.internal.image.PngFileReadState; import org.eclipse.swt.internal.image.PngIhdrChunk; class PngPlteChunk : PngChunk { int paletteSize; this(PaletteData palette) { super(palette.getRGBs().length * 3); paletteSize = length / 3; setType(TYPE_PLTE); setPaletteData(palette); setCRC(computeCRC()); } this(byte[] reference){ super(reference); paletteSize = length / 3; } override int getChunkType() { return CHUNK_PLTE; } /** * Get the number of colors in this palette. */ int getPaletteSize() { return paletteSize; } /** * Get a PaletteData object representing the colors * stored in this PLTE chunk. * The result should be cached as the PLTE chunk * does not store the palette data created. */ PaletteData getPaletteData() { RGB[] rgbs = new RGB[paletteSize]; // int start = DATA_OFFSET; // int end = DATA_OFFSET + length; for (int i = 0; i < rgbs.length; i++) { int offset = DATA_OFFSET + (i * 3); int red = reference[offset] & 0xFF; int green = reference[offset + 1] & 0xFF; int blue = reference[offset + 2] & 0xFF; rgbs[i] = new RGB(red, green, blue); } return new PaletteData(rgbs); } /** * Set the data of a PLTE chunk to the colors * stored in the specified PaletteData object. */ void setPaletteData(PaletteData palette) { RGB[] rgbs = palette.getRGBs(); for (int i = 0; i < rgbs.length; i++) { int offset = DATA_OFFSET + (i * 3); reference[offset] = cast(byte) rgbs[i].red; reference[offset + 1] = cast(byte) rgbs[i].green; reference[offset + 2] = cast(byte) rgbs[i].blue; } } /** * Answer whether the chunk is a valid PLTE chunk. */ override void validate(PngFileReadState readState, PngIhdrChunk headerChunk) { // A PLTE chunk is invalid if no IHDR has been read or if any PLTE, // IDAT, or IEND chunk has been read. if (!readState.readIHDR || readState.readPLTE || readState.readTRNS || readState.readIDAT || readState.readIEND) { SWT.error(SWT.ERROR_INVALID_IMAGE); } else { readState.readPLTE = true; } super.validate(readState, headerChunk); // Palettes cannot be included in grayscale images. // // Note: just ignore the palette. // if (!headerChunk.getCanHavePalette()) SWT.error(SWT.ERROR_INVALID_IMAGE); // Palette chunks' data fields must be event multiples // of 3. Each 3-byte group represents an RGB value. if (getLength() % 3 !is 0) SWT.error(SWT.ERROR_INVALID_IMAGE); // Palettes cannot have more entries than 2^bitDepth // where bitDepth is the bit depth of the image given // in the IHDR chunk. if (1 << headerChunk.getBitDepth() < paletteSize) { SWT.error(SWT.ERROR_INVALID_IMAGE); } // Palettes cannot have more than 256 entries. if (256 < paletteSize) SWT.error(SWT.ERROR_INVALID_IMAGE); } override String contributeToString() { return Format("\n\tPalette size:{}", paletteSize ); } }