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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.6.0_04) on Sat May 17 11:57:46 CEST 2008 --><TITLE>BidiOrder</TITLE><META NAME="date" CONTENT="2008-05-17"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ if (location.href.indexOf('is-external=true') == -1) { parent.document.title="BidiOrder"; }}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><HR><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><a href="http://www.1t3xt.com/docs/book.php" target="_blank"><img src="http://www.1t3xt.com/img/book/lowagie_3d.jpg" border="0" /></a></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../com/lowagie/text/pdf/BidiLine.html" title="class in com.lowagie.text.pdf"><B>PREV CLASS</B></A> <A HREF="../../../../com/lowagie/text/pdf/ByteBuffer.html" title="class in com.lowagie.text.pdf"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html?com/lowagie/text/pdf/BidiOrder.html" target="_top"><B>FRAMES</B></A> <A HREF="BidiOrder.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">com.lowagie.text.pdf</FONT><BR>Class BidiOrder</H2><PRE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>com.lowagie.text.pdf.BidiOrder</B></PRE><HR><DL><DT><PRE>public final class <B>BidiOrder</B><DT>extends <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL></PRE><P>Reference implementation of the Unicode 3.0 Bidi algorithm. <p> This implementation is not optimized for performance. It is intended as a reference implementation that closely follows the specification of the Bidirectional Algorithm in The Unicode Standard version 3.0. <p> <b>Input:</b><br> There are two levels of input to the algorithm, since clients may prefer to supply some information from out-of-band sources rather than relying on the default behavior. <ol> <li>unicode type array <li>unicode type array, with externally supplied base line direction </ol> <p><b>Output:</b><br> Output is separated into several stages as well, to better enable clients to evaluate various aspects of implementation conformance. <ol> <li>levels array over entire paragraph <li>reordering array over entire paragraph <li>levels array over line <li>reordering array over line </ol> Note that for conformance, algorithms are only required to generate correct reordering and character directionality (odd or even levels) over a line. Generating identical level arrays over a line is not required. Bidi explicit format codes (LRE, RLE, LRO, RLO, PDF) and BN can be assigned arbitrary levels and positions as long as the other text matches. <p> As the algorithm is defined to operate on a single paragraph at a time, this implementation is written to handle single paragraphs. Thus rule P1 is presumed by this implementation-- the data provided to the implementation is assumed to be a single paragraph, and either contains no 'B' codes, or a single 'B' code at the end of the input. 'B' is allowed as input to illustrate how the algorithm assigns it a level. <p> Also note that rules L3 and L4 depend on the rendering engine that uses the result of the bidi algorithm. This implementation assumes that the rendering engine expects combining marks in visual order (e.g. to the left of their base character in RTL runs) and that it adjust the glyphs used to render mirrored characters that are in RTL runs so that they render appropriately.<P><P><DL><DT><B>Author:</B></DT> <DD>Doug Felt</DD></DL><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Field Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#AL">AL</A></B></CODE><BR> Right-to-Left Arabic</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#AN">AN</A></B></CODE><BR> Arabic Number</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#B">B</A></B></CODE><BR> Paragraph Separator</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>private static char[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#baseTypes">baseTypes</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#BN">BN</A></B></CODE><BR> Boundary Neutral</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#CS">CS</A></B></CODE><BR> Common Number Separator</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>private byte[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#embeddings">embeddings</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#EN">EN</A></B></CODE><BR> European Number</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#ES">ES</A></B></CODE><BR> European Number Separator</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#ET">ET</A></B></CODE><BR> European Number Terminator</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>private byte[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#initialTypes">initialTypes</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#L">L</A></B></CODE><BR> Left-to-right</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#LRE">LRE</A></B></CODE><BR> Left-to-Right Embedding</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#LRO">LRO</A></B></CODE><BR> Left-to-Right Override</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#NSM">NSM</A></B></CODE><BR> Non-Spacing Mark</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#ON">ON</A></B></CODE><BR> Other Neutrals</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>private byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#paragraphEmbeddingLevel">paragraphEmbeddingLevel</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#PDF">PDF</A></B></CODE><BR> Pop Directional Format</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#R">R</A></B></CODE><BR> Right-to-Left</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>private byte[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#resultLevels">resultLevels</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>private byte[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#resultTypes">resultTypes</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#RLE">RLE</A></B></CODE><BR> Right-to-Left Embedding</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#RLO">RLO</A></B></CODE><BR> Right-to-Left Override</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>private static byte[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#rtypes">rtypes</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#S">S</A></B></CODE><BR> Segment Separator</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>private int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#textLength">textLength</A></B></CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#TYPE_MAX">TYPE_MAX</A></B></CODE><BR> Maximum bidi type value.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static byte</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../com/lowagie/text/pdf/BidiOrder.html#TYPE_MIN">TYPE_MIN</A></B></CODE><BR> Minimum bidi type value.</TD>⌨️ 快捷键说明
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