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view org.eclipse.swt.gtk.linux.x86/src/org/eclipse/swt/internal/image/PngEncoder.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 | ddbfe84d86df |
children |
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/******************************************************************************* * Copyright (c) 2000, 2007 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.PngEncoder; import java.lang.all; import org.eclipse.swt.internal.image.LEDataOutputStream; import org.eclipse.swt.internal.image.PngDeflater; import java.io.ByteArrayOutputStream; import java.io.OutputStream; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.ImageData; import org.eclipse.swt.graphics.ImageLoader; import org.eclipse.swt.graphics.RGB; import org.eclipse.swt.internal.Compatibility; import org.eclipse.swt.internal.image.PngChunk; final class PngEncoder { static const byte SIGNATURE[] = [cast(byte) '\211', cast(byte) 'P', cast(byte) 'N', cast(byte) 'G', cast(byte) '\r', cast(byte) '\n', cast(byte) '\032', cast(byte) '\n']; static const byte TAG_IHDR[] = [cast(byte) 'I', cast(byte) 'H', cast(byte) 'D', cast(byte) 'R']; static const byte TAG_PLTE[] = [cast(byte) 'P', cast(byte) 'L', cast(byte) 'T', cast(byte) 'E']; static const byte TAG_TRNS[] = [cast(byte) 't', cast(byte) 'R', cast(byte) 'N', cast(byte) 'S']; static const byte TAG_IDAT[] = [cast(byte) 'I', cast(byte) 'D', cast(byte) 'A', cast(byte) 'T']; static const byte TAG_IEND[] = [cast(byte) 'I', cast(byte) 'E', cast(byte) 'N', cast(byte) 'D']; ByteArrayOutputStream bytes; PngChunk chunk; ImageLoader loader; ImageData data; int transparencyType; int width, height, bitDepth, colorType; int compressionMethod = 0; int filterMethod = 0; int interlaceMethod = 0; public this(ImageLoader loader) { this.bytes = new ByteArrayOutputStream(1024); this.loader = loader; this.data = loader.data[0]; this.transparencyType = data.getTransparencyType(); this.width = data.width; this.height = data.height; this.bitDepth = 8; this.colorType = 2; if (data.palette.isDirect) { if (transparencyType is SWT.TRANSPARENCY_ALPHA) { this.colorType = 6; } } else { this.colorType = 3; } if (!(colorType is 2 || colorType is 3 || colorType is 6)) SWT.error(SWT.ERROR_INVALID_IMAGE); } void writeShort(ByteArrayOutputStream baos, int theShort) { byte byte1 = cast(byte) ((theShort >> 8) & 0xff); byte byte2 = cast(byte) (theShort & 0xff); byte[2] temp = [byte1, byte2]; baos.write(temp, 0, 2); } void writeInt(ByteArrayOutputStream baos, int theInt) { byte byte1 = cast(byte) ((theInt >> 24) & 0xff); byte byte2 = cast(byte) ((theInt >> 16) & 0xff); byte byte3 = cast(byte) ((theInt >> 8) & 0xff); byte byte4 = cast(byte) (theInt & 0xff); byte[4] temp = [byte1, byte2, byte3, byte4]; baos.write(temp, 0, 4); } void writeChunk(in byte[] tag, in byte[] buffer) { int bufferLength = (buffer !is null) ? buffer.length : 0; chunk = new PngChunk(bufferLength); writeInt(bytes, bufferLength); bytes.write(tag, 0, 4); chunk.setType(tag); if (bufferLength !is 0) { bytes.write(buffer, 0, bufferLength); chunk.setData(buffer); } else { chunk.setCRC(chunk.computeCRC()); } writeInt(bytes, chunk.getCRC()); } void writeSignature() { bytes.write(SIGNATURE, 0, 8); } void writeHeader() { ByteArrayOutputStream baos = new ByteArrayOutputStream(13); writeInt(baos, width); writeInt(baos, height); baos.write(bitDepth); baos.write(colorType); baos.write(compressionMethod); baos.write(filterMethod); baos.write(interlaceMethod); writeChunk(TAG_IHDR, baos.toByteArray()); } void writePalette() { RGB[] RGBs = data.palette.getRGBs(); if (RGBs.length > 256) SWT.error(SWT.ERROR_INVALID_IMAGE); ByteArrayOutputStream baos = new ByteArrayOutputStream(RGBs.length); for (int i = 0; i < RGBs.length; i++) { baos.write(cast(byte) RGBs[i].red); baos.write(cast(byte) RGBs[i].green); baos.write(cast(byte) RGBs[i].blue); } writeChunk(TAG_PLTE, baos.toByteArray()); } void writeTransparency() { ByteArrayOutputStream baos = new ByteArrayOutputStream(); switch (transparencyType) { case SWT.TRANSPARENCY_ALPHA: int pixelValue, alphaValue; byte[] alphas = new byte[data.palette.getRGBs().length]; for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { pixelValue = data.getPixel(x, y); alphaValue = data.getAlpha(x, y); alphas[pixelValue] = cast(byte) alphaValue; } } baos.write(alphas, 0, alphas.length); break; case SWT.TRANSPARENCY_PIXEL: int pixel = data.transparentPixel; if (colorType is 2) { int redMask = data.palette.redMask; int redShift = data.palette.redShift; int greenMask = data.palette.greenMask; int greenShift = data.palette.greenShift; int blueShift = data.palette.blueShift; int blueMask = data.palette.blueMask; int r = pixel & redMask; r = (redShift < 0) ? r >>> -redShift : r << redShift; int g = pixel & greenMask; g = (greenShift < 0) ? g >>> -greenShift : g << greenShift; int b = pixel & blueMask; b = (blueShift < 0) ? b >>> -blueShift : b << blueShift; writeShort(baos, r); writeShort(baos, g); writeShort(baos, b); } if (colorType is 3) { byte[] padding = new byte[pixel + 1]; for (int i = 0; i < pixel; i++) { padding[i] = cast(byte) 255; } padding[pixel] = cast(byte) 0; baos.write(padding, 0, padding.length); } break; default: } writeChunk(TAG_TRNS, baos.toByteArray()); } void writeImageData() { ByteArrayOutputStream baos = new ByteArrayOutputStream(1024); OutputStream os = Compatibility.newDeflaterOutputStream(baos); if (os is null) os = baos; if (colorType is 3) { byte[] lineData = new byte[width]; for (int y = 0; y < height; y++) { int filter = 0; os.write(filter); data.getPixels(0, y, width, lineData, 0); for (int x = 0; x < lineData.length; x++) { os.write(lineData[x]); } } } else { int[] lineData = new int[width]; byte[] alphaData = null; if (colorType is 6) { alphaData = new byte[width]; } int redMask = data.palette.redMask; int redShift = data.palette.redShift; int greenMask = data.palette.greenMask; int greenShift = data.palette.greenShift; int blueShift = data.palette.blueShift; int blueMask = data.palette.blueMask; for (int y = 0; y < height; y++) { int filter = 0; os.write(filter); data.getPixels(0, y, width, lineData, 0); if (colorType is 6) { data.getAlphas(0, y, width, alphaData, 0); } for (int x = 0; x < lineData.length; x++) { int pixel = lineData[x]; int r = pixel & redMask; r = (redShift < 0) ? r >>> -redShift : r << redShift; int g = pixel & greenMask; g = (greenShift < 0) ? g >>> -greenShift : g << greenShift; int b = pixel & blueMask; b = (blueShift < 0) ? b >>> -blueShift : b << blueShift; os.write(r); os.write(g); os.write(b); if (colorType is 6) { os.write(alphaData[x]); } } } } os.flush(); os.close(); byte[] compressed = baos.toByteArray(); if (os is baos) { PngDeflater deflater = new PngDeflater(); compressed = deflater.deflate(compressed); } writeChunk(TAG_IDAT, compressed); } void writeEnd() { writeChunk(TAG_IEND, null); } public void encode(LEDataOutputStream outputStream) { try { writeSignature(); writeHeader(); if (colorType is 3) { writePalette(); } bool transparencyAlpha = (transparencyType is SWT.TRANSPARENCY_ALPHA); bool transparencyPixel = (transparencyType is SWT.TRANSPARENCY_PIXEL); bool type2Transparency = (colorType is 2 && transparencyPixel); bool type3Transparency = (colorType is 3 && (transparencyAlpha || transparencyPixel)); if (type2Transparency || type3Transparency) { writeTransparency(); } writeImageData(); writeEnd(); outputStream.write(bytes.toByteArray()); } catch (IOException e) { SWT.error(SWT.ERROR_IO, e); } } }