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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD> <TITLE>2D Text Tutorial Lesson 5: Other Methods</TITLE> <META NAME="AUTHOR" CONTENT="Monica Pawlan of the JDC"> <META NAME="CREATED" CONTENT="09/15/98"> <META NAME="OWNER" CONTENT="Editorial/JDC"> <META NAME="revision" CONTENT="@(#)other.src 1.8 11/10/99 JDC"> <META NAME="TOPIC" CONTENT="tutorial, graphics, media, JDK 1.2, text, API"> <STYLE TYPE="text/css"> <!-- CODE {font-family: Courier, Monospace; font-size: 12pt} PRE {font-family: Courier, Monospace; font-size: 11pt} --> </STYLE></HEAD><!-- Start Body Insert--><BODY BGCOLOR="#ffffff"><!-- End Body Insert--><!-- Start PageTop Insert --><TABLE BORDER="0" CELLSPACING="0" CELLPADDING="0" WIDTH="100%"> <TR ALIGN="CENTER" VALIGN="TOP"> <TD WIDTH="157" ALIGN="LEFT"> <IMG SRC="/images/pixel.gif" HEIGHT="40" WIDTH="40" ALT=""> <A HREF="http://java.sun.com/index.html"><IMG SRC="/images/javalogo52x88.gif" WIDTH="52" HEIGHT="88" ALT="Java Technology Home Page" 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Java Technology is Used Worldwide"></A></TD></TR><TR><TD> </TD></TR><!-- End NavBar Insert --><!-- START SUB-NAV --><TR> <TD><!-- INSERT SUB-NAV INFO --> </TD></TR><!-- END SUB-NAV --></TABLE><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0"><TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><!-- Template Version 2.0 --><!-- ================== --><!-- Start Main Content --><!-- ================== --><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0"><TR><TD><FONT FACE="Verdana, Arial, Helvetica, sans-serif"> <DIV ALIGN="RIGHT"> <FONT SIZE="-1"><A HREF="/developer/onlineTraining/index.html">Training Index</A></FONT> <H2>2D Text Tutorial<BR> <FONT SIZE="3">Lesson 5: Other Methods</FONT></H2> <H4><EM>By Monica Pawlan</EM></H4> <FONT SIZE="-1">[<A HREF="int.html"><<BACK</A>] [<A HREF="index.html#TOC">CONTENTS</A>] [<A HREF="end.html">NEXT>></A>]</FONT></DIV> <P>This lesson describes the following <A HREF="http://java.sun.com/products/jdk/1.2/docs/api/index.html"><CODE>java.awt.font.TextLayout</CODE></A> methods.You have seen some of these methods in previous lessons, while othersintroduced here for the first time here.<UL><LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><A HREF="#base">Baseline and Baseline Offsets</A></FONT><LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><A HREF="#ascent">Ascent, Descent, and Leading</A></FONT><LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><A HREF="#advance">Advance and Visual Advance</A></FONT><LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><A HREF="#bounds">Bounds and Black Box Bounds</A></FONT><LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><A HREF="#just">Justified Text</A></FONT><LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><A HREF="#level">Character Level</A></FONT><LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif"><A HREF="exercises.html#five">Exercises</A></FONT> </UL><HR><A NAME="base"></A><H3>Baseline</H3>The baseline is the hypothetical line upon which characters rest. Somecharacters such as <I>y</I> and <I>g</I> have descenders that drop below the baseline.<P><IMG SRC="./Art/Baseline.gif"><P>A <CODE>TextLayout</CODE> object has methods for returninginformation about the baseline of the text. The methods support writing systems that use different baselines,and multiple such writing systems in the same line of text. <UL><LI><CODE>TextLayout.getBaseline</CODE><LI><CODE>TextLayout.getBaselineOffsets</CODE></UL>The baselinessupported are Roman, centered, and hanging. <UL><LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Roman text uses the baseline that runs underthe bottoms of the characters that do not have descenders. </FONT><P><LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Chinese text uses a centered baseline that runs through the centers of the characters. </FONT><P><LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">The hanging baseline is used for languages,like Hindi, which generally align at the top. </FONT></UL><BLOCKQUOTE><HR>⌨️ 快捷键说明
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