author | ohair |
Tue, 25 May 2010 15:58:33 -0700 | |
changeset 5506 | 202f599c92aa |
parent 715 | f16baef3a20e |
child 23312 | 4711f66e7d5c |
permissions | -rw-r--r-- |
2 | 1 |
/* |
5506 | 2 |
* Copyright (c) 2005, 2008, Oracle and/or its affiliates. All rights reserved. |
2 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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5506 | 7 |
* published by the Free Software Foundation. Oracle designates this |
2 | 8 |
* particular file as subject to the "Classpath" exception as provided |
5506 | 9 |
* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package com.sun.imageio.plugins.gif; |
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import java.io.UnsupportedEncodingException; |
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import java.nio.charset.Charset; |
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import java.util.ArrayList; |
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import java.util.Iterator; |
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import java.util.List; |
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import javax.imageio.ImageTypeSpecifier; |
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import javax.imageio.metadata.IIOInvalidTreeException; |
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import javax.imageio.metadata.IIOMetadata; |
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import javax.imageio.metadata.IIOMetadataNode; |
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import javax.imageio.metadata.IIOMetadataFormat; |
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import javax.imageio.metadata.IIOMetadataFormatImpl; |
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import org.w3c.dom.Node; |
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class GIFWritableImageMetadata extends GIFImageMetadata { |
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// package scope |
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static final String |
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NATIVE_FORMAT_NAME = "javax_imageio_gif_image_1.0"; |
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GIFWritableImageMetadata() { |
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super(true, |
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NATIVE_FORMAT_NAME, |
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"com.sun.imageio.plugins.gif.GIFImageMetadataFormat", |
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null, null); |
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} |
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public boolean isReadOnly() { |
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return false; |
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} |
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public void reset() { |
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// Fields from Image Descriptor |
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imageLeftPosition = 0; |
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imageTopPosition = 0; |
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imageWidth = 0; |
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imageHeight = 0; |
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interlaceFlag = false; |
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sortFlag = false; |
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localColorTable = null; |
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// Fields from Graphic Control Extension |
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disposalMethod = 0; |
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userInputFlag = false; |
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transparentColorFlag = false; |
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delayTime = 0; |
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transparentColorIndex = 0; |
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// Fields from Plain Text Extension |
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hasPlainTextExtension = false; |
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textGridLeft = 0; |
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textGridTop = 0; |
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textGridWidth = 0; |
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textGridHeight = 0; |
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characterCellWidth = 0; |
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characterCellHeight = 0; |
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textForegroundColor = 0; |
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textBackgroundColor = 0; |
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text = null; |
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// Fields from ApplicationExtension |
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applicationIDs = null; |
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authenticationCodes = null; |
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applicationData = null; |
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// Fields from CommentExtension |
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// List of byte[] |
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comments = null; |
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} |
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private byte[] fromISO8859(String data) { |
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try { |
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return data.getBytes("ISO-8859-1"); |
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} catch (UnsupportedEncodingException e) { |
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2ae294e4518c
6613529: Avoid duplicate object creation within JDK packages
dav
parents:
2
diff
changeset
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return "".getBytes(); |
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} |
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} |
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protected void mergeNativeTree(Node root) throws IIOInvalidTreeException { |
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Node node = root; |
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if (!node.getNodeName().equals(nativeMetadataFormatName)) { |
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fatal(node, "Root must be " + nativeMetadataFormatName); |
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} |
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node = node.getFirstChild(); |
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while (node != null) { |
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String name = node.getNodeName(); |
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if (name.equals("ImageDescriptor")) { |
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imageLeftPosition = getIntAttribute(node, |
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"imageLeftPosition", |
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-1, true, |
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true, 0, 65535); |
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imageTopPosition = getIntAttribute(node, |
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"imageTopPosition", |
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-1, true, |
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true, 0, 65535); |
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imageWidth = getIntAttribute(node, |
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"imageWidth", |
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-1, true, |
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true, 1, 65535); |
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imageHeight = getIntAttribute(node, |
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"imageHeight", |
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-1, true, |
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true, 1, 65535); |
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interlaceFlag = getBooleanAttribute(node, "interlaceFlag", |
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false, true); |
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} else if (name.equals("LocalColorTable")) { |
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int sizeOfLocalColorTable = |
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getIntAttribute(node, "sizeOfLocalColorTable", |
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true, 2, 256); |
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if (sizeOfLocalColorTable != 2 && |
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sizeOfLocalColorTable != 4 && |
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sizeOfLocalColorTable != 8 && |
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sizeOfLocalColorTable != 16 && |
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sizeOfLocalColorTable != 32 && |
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sizeOfLocalColorTable != 64 && |
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sizeOfLocalColorTable != 128 && |
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sizeOfLocalColorTable != 256) { |
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fatal(node, |
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"Bad value for LocalColorTable attribute sizeOfLocalColorTable!"); |
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} |
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sortFlag = getBooleanAttribute(node, "sortFlag", false, true); |
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localColorTable = getColorTable(node, "ColorTableEntry", |
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true, sizeOfLocalColorTable); |
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} else if (name.equals("GraphicControlExtension")) { |
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String disposalMethodName = |
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getStringAttribute(node, "disposalMethod", null, |
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true, disposalMethodNames); |
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disposalMethod = 0; |
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while(!disposalMethodName.equals(disposalMethodNames[disposalMethod])) { |
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disposalMethod++; |
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} |
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userInputFlag = getBooleanAttribute(node, "userInputFlag", |
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false, true); |
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transparentColorFlag = |
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getBooleanAttribute(node, "transparentColorFlag", |
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false, true); |
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delayTime = getIntAttribute(node, |
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"delayTime", |
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-1, true, |
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true, 0, 65535); |
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transparentColorIndex = |
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getIntAttribute(node, "transparentColorIndex", |
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-1, true, |
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true, 0, 65535); |
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} else if (name.equals("PlainTextExtension")) { |
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hasPlainTextExtension = true; |
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textGridLeft = getIntAttribute(node, |
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"textGridLeft", |
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-1, true, |
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true, 0, 65535); |
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textGridTop = getIntAttribute(node, |
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"textGridTop", |
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-1, true, |
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true, 0, 65535); |
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textGridWidth = getIntAttribute(node, |
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"textGridWidth", |
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-1, true, |
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true, 1, 65535); |
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textGridHeight = getIntAttribute(node, |
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"textGridHeight", |
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-1, true, |
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true, 1, 65535); |
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characterCellWidth = getIntAttribute(node, |
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"characterCellWidth", |
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-1, true, |
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true, 1, 65535); |
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characterCellHeight = getIntAttribute(node, |
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"characterCellHeight", |
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-1, true, |
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true, 1, 65535); |
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textForegroundColor = getIntAttribute(node, |
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"textForegroundColor", |
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-1, true, |
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true, 0, 255); |
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textBackgroundColor = getIntAttribute(node, |
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"textBackgroundColor", |
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-1, true, |
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true, 0, 255); |
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// XXX The "text" attribute of the PlainTextExtension element |
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// is not defined in the GIF image metadata format but it is |
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// present in the GIFImageMetadata class. Consequently it is |
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// used here but not required and with a default of "". See |
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// bug 5082763. |
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String textString = |
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getStringAttribute(node, "text", "", false, null); |
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text = fromISO8859(textString); |
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} else if (name.equals("ApplicationExtensions")) { |
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IIOMetadataNode applicationExtension = |
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(IIOMetadataNode)node.getFirstChild(); |
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if (!applicationExtension.getNodeName().equals("ApplicationExtension")) { |
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fatal(node, |
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"Only a ApplicationExtension may be a child of a ApplicationExtensions!"); |
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} |
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String applicationIDString = |
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getStringAttribute(applicationExtension, "applicationID", |
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null, true, null); |
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String authenticationCodeString = |
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getStringAttribute(applicationExtension, "authenticationCode", |
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null, true, null); |
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Object applicationExtensionData = |
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applicationExtension.getUserObject(); |
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if (applicationExtensionData == null || |
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!(applicationExtensionData instanceof byte[])) { |
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fatal(applicationExtension, |
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"Bad user object in ApplicationExtension!"); |
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} |
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if (applicationIDs == null) { |
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applicationIDs = new ArrayList(); |
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authenticationCodes = new ArrayList(); |
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applicationData = new ArrayList(); |
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} |
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applicationIDs.add(fromISO8859(applicationIDString)); |
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authenticationCodes.add(fromISO8859(authenticationCodeString)); |
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applicationData.add(applicationExtensionData); |
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} else if (name.equals("CommentExtensions")) { |
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Node commentExtension = node.getFirstChild(); |
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if (commentExtension != null) { |
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while(commentExtension != null) { |
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if (!commentExtension.getNodeName().equals("CommentExtension")) { |
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fatal(node, |
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"Only a CommentExtension may be a child of a CommentExtensions!"); |
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} |
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if (comments == null) { |
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comments = new ArrayList(); |
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} |
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String comment = |
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getStringAttribute(commentExtension, "value", null, |
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true, null); |
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comments.add(fromISO8859(comment)); |
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commentExtension = commentExtension.getNextSibling(); |
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} |
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} |
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} else { |
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fatal(node, "Unknown child of root node!"); |
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} |
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node = node.getNextSibling(); |
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} |
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} |
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298 |
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protected void mergeStandardTree(Node root) |
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throws IIOInvalidTreeException { |
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Node node = root; |
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if (!node.getNodeName() |
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.equals(IIOMetadataFormatImpl.standardMetadataFormatName)) { |
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fatal(node, "Root must be " + |
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IIOMetadataFormatImpl.standardMetadataFormatName); |
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} |
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node = node.getFirstChild(); |
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while (node != null) { |
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String name = node.getNodeName(); |
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311 |
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312 |
if (name.equals("Chroma")) { |
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Node childNode = node.getFirstChild(); |
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while(childNode != null) { |
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String childName = childNode.getNodeName(); |
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316 |
if (childName.equals("Palette")) { |
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localColorTable = getColorTable(childNode, |
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"PaletteEntry", |
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false, -1); |
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break; |
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} |
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childNode = childNode.getNextSibling(); |
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} |
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} else if (name.equals("Compression")) { |
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Node childNode = node.getFirstChild(); |
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326 |
while(childNode != null) { |
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String childName = childNode.getNodeName(); |
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if (childName.equals("NumProgressiveScans")) { |
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329 |
int numProgressiveScans = |
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330 |
getIntAttribute(childNode, "value", 4, false, |
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true, 1, Integer.MAX_VALUE); |
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332 |
if (numProgressiveScans > 1) { |
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interlaceFlag = true; |
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} |
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335 |
break; |
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336 |
} |
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childNode = childNode.getNextSibling(); |
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338 |
} |
|
339 |
} else if (name.equals("Dimension")) { |
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340 |
Node childNode = node.getFirstChild(); |
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341 |
while(childNode != null) { |
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342 |
String childName = childNode.getNodeName(); |
|
343 |
if (childName.equals("HorizontalPixelOffset")) { |
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344 |
imageLeftPosition = getIntAttribute(childNode, |
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345 |
"value", |
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346 |
-1, true, |
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true, 0, 65535); |
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348 |
} else if (childName.equals("VerticalPixelOffset")) { |
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349 |
imageTopPosition = getIntAttribute(childNode, |
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350 |
"value", |
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351 |
-1, true, |
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true, 0, 65535); |
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353 |
} |
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354 |
childNode = childNode.getNextSibling(); |
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355 |
} |
|
356 |
} else if (name.equals("Text")) { |
|
357 |
Node childNode = node.getFirstChild(); |
|
358 |
while(childNode != null) { |
|
359 |
String childName = childNode.getNodeName(); |
|
360 |
if (childName.equals("TextEntry") && |
|
361 |
getAttribute(childNode, "compression", |
|
362 |
"none", false).equals("none") && |
|
363 |
Charset.isSupported(getAttribute(childNode, |
|
364 |
"encoding", |
|
365 |
"ISO-8859-1", |
|
366 |
false))) { |
|
367 |
String value = getAttribute(childNode, "value"); |
|
368 |
byte[] comment = fromISO8859(value); |
|
369 |
if (comments == null) { |
|
370 |
comments = new ArrayList(); |
|
371 |
} |
|
372 |
comments.add(comment); |
|
373 |
} |
|
374 |
childNode = childNode.getNextSibling(); |
|
375 |
} |
|
376 |
} else if (name.equals("Transparency")) { |
|
377 |
Node childNode = node.getFirstChild(); |
|
378 |
while(childNode != null) { |
|
379 |
String childName = childNode.getNodeName(); |
|
380 |
if (childName.equals("TransparentIndex")) { |
|
381 |
transparentColorIndex = getIntAttribute(childNode, |
|
382 |
"value", |
|
383 |
-1, true, |
|
384 |
true, 0, 255); |
|
385 |
transparentColorFlag = true; |
|
386 |
break; |
|
387 |
} |
|
388 |
childNode = childNode.getNextSibling(); |
|
389 |
} |
|
390 |
} |
|
391 |
||
392 |
node = node.getNextSibling(); |
|
393 |
} |
|
394 |
} |
|
395 |
||
396 |
public void setFromTree(String formatName, Node root) |
|
397 |
throws IIOInvalidTreeException |
|
398 |
{ |
|
399 |
reset(); |
|
400 |
mergeTree(formatName, root); |
|
401 |
} |
|
402 |
} |