<HTML> <HEAD> <!-- Created by texi2html 1.56k + clip patches and <A href="http://www.clip.dia.fi.upm.es/Software">lpdoc</A> from ciao.texi on 28 January 2007 --> <LINK rel="stylesheet" href="ciao.css" type="text/css"> <TITLE>The Ciao Prolog System - text_class (library)</TITLE> </HEAD> <BODY> Go to the <A HREF="ciao_1.html">first</A>, <A HREF="ciao_142.html">previous</A>, <A HREF="ciao_144.html">next</A>, <A HREF="ciao_241.html">last</A> section, <A HREF="ciao_toc.html">table of contents</A>. <P><HR><P> <H1><A NAME="SEC593" HREF="ciao_toc.html#TOC593">text_class (library)</A></H1> <P> <A NAME="IDX6535"></A> <P> <STRONG>Author(s):</STRONG> Montserrat Urraca. <P> <STRONG>Version:</STRONG> 1.10#7 (2006/4/26, 19:22:13 CEST) <P> <STRONG>Version of last change:</STRONG> 1.9#148 (2003/12/4, 17:34:58 CET) <UL> <LI><A HREF="ciao_143.html#SEC594">Usage and interface (text_class)</A> <LI><A HREF="ciao_143.html#SEC595">Documentation on exports (text_class)</A> </UL> <H2><A NAME="SEC594" HREF="ciao_toc.html#TOC594">Usage and interface (<CODE>text_class</CODE>)</A></H2> <div class="cartouche"> <UL> <LI><STRONG>Library usage:</STRONG> <CODE>:- use_module(library(text_class)).</CODE> <LI><STRONG>Exports:</STRONG> <UL> <LI><EM>Predicates:</EM> <A NAME="IDX6536"></A> <CODE>coord/2</CODE>, <A NAME="IDX6537"></A> <CODE>point/2</CODE>, <A NAME="IDX6538"></A> <CODE>text_characters/1</CODE>, <A NAME="IDX6539"></A> <CODE>anchor/1</CODE>, <A NAME="IDX6540"></A> <CODE>font_type/1</CODE>, <A NAME="IDX6541"></A> <CODE>justify_text/1</CODE>. </UL> <LI><STRONG>Other modules used:</STRONG> <UL> <LI><EM>System library modules:</EM> <A NAME="IDX6542"></A> <CODE>objects/objects_rt</CODE>. </UL> </UL> </div class="cartouche"> <H2><A NAME="SEC595" HREF="ciao_toc.html#TOC595">Documentation on exports (<CODE>text_class</CODE>)</A></H2> <P> <A NAME="IDX6543"></A> <A NAME="IDX6544"></A> <DL> <DT><span class="define">PREDICATE:</span> <B>coord/2:</B> <DD><A NAME="IDX6545"></A> <P> <STRONG>Usage:</STRONG> <CODE>coord(+X, +Y)</CODE> <UL> <LI><EM>Description:</EM> <CODE>X</CODE> and <CODE>Y</CODE> specify the coordinates of a point used to position the text on the display. <LI><EM>Call and exit should be <EM>compatible</EM> with:</EM> <CODE>+X</CODE> is an integer. (<CODE>basic_props:int/1</CODE>) <CODE>+Y</CODE> is an integer. (<CODE>basic_props:int/1</CODE>) </UL> </DL> <P> <A NAME="IDX6546"></A> <A NAME="IDX6547"></A> <DL> <DT><span class="define">PREDICATE:</span> <B>point/2:</B> <DD><A NAME="IDX6548"></A> <P> <STRONG>Usage:</STRONG> <CODE>point(+X, +Y)</CODE> <UL> <LI><EM>Description:</EM> <CODE>X</CODE> and <CODE>Y</CODE> change the coordinates of a point used to position the text on the display. <LI><EM>Call and exit should be <EM>compatible</EM> with:</EM> <CODE>+X</CODE> is an integer. (<CODE>basic_props:int/1</CODE>) <CODE>+Y</CODE> is an integer. (<CODE>basic_props:int/1</CODE>) </UL> </DL> <P> <A NAME="IDX6549"></A> <A NAME="IDX6550"></A> <DL> <DT><span class="define">PREDICATE:</span> <B>text_characters/1:</B> <DD><A NAME="IDX6551"></A> <P> <STRONG>Usage 1:</STRONG> <CODE>text_characters(+Text)</CODE> <UL> <LI><EM>Description:</EM> <CODE>Text</CODE> specifies the characters to be displayed in the text item. This option defaults to an empty string. <LI><EM>Call and exit should be <EM>compatible</EM> with:</EM> <CODE>+Text</CODE> is currently instantiated to an atom. (<CODE>term_typing:atom/1</CODE>) </UL> <P> <STRONG>Usage 2:</STRONG> <CODE>text_characters(-Text)</CODE> <UL> <LI><EM>Description:</EM> Gets the text displayed in the text item. <LI><EM>Call and exit should be <EM>compatible</EM> with:</EM> <CODE>-Text</CODE> is currently instantiated to an atom. (<CODE>term_typing:atom/1</CODE>) </UL> </DL> <P> <A NAME="IDX6552"></A> <A NAME="IDX6553"></A> <DL> <DT><span class="define">PREDICATE:</span> <B>anchor/1:</B> <DD><A NAME="IDX6554"></A> <P> <STRONG>Usage 1:</STRONG> <CODE>anchor(+AnchorPos)</CODE> <UL> <LI><EM>Description:</EM> <CODE>AnchorPos</CODE> tells how to position the text relative to the positioning point for the text. This option defaluts to center. <LI><EM>Call and exit should be <EM>compatible</EM> with:</EM> <CODE>+AnchorPos</CODE> is currently instantiated to an atom. (<CODE>term_typing:atom/1</CODE>) </UL> <P> <STRONG>Usage 2:</STRONG> <CODE>anchor(-AnchorPos)</CODE> <UL> <LI><EM>Description:</EM> Gets the position of the text relative to the positioning point. <LI><EM>Call and exit should be <EM>compatible</EM> with:</EM> <CODE>-AnchorPos</CODE> is currently instantiated to an atom. (<CODE>term_typing:atom/1</CODE>) </UL> </DL> <P> <A NAME="IDX6555"></A> <A NAME="IDX6556"></A> <DL> <DT><span class="define">PREDICATE:</span> <B>font_type/1:</B> <DD><A NAME="IDX6557"></A> <P> <STRONG>Usage 1:</STRONG> <CODE>font_type(+Font)</CODE> <UL> <LI><EM>Description:</EM> <CODE>Font</CODE> specifies the font to use for the text item. This option defaluts to arial. <LI><EM>Call and exit should be <EM>compatible</EM> with:</EM> <CODE>+Font</CODE> is currently instantiated to an atom. (<CODE>term_typing:atom/1</CODE>) </UL> <P> <STRONG>Usage 2:</STRONG> <CODE>font_type(-Font)</CODE> <UL> <LI><EM>Description:</EM> Gets the value of the <CODE>Font</CODE> used for the text item. <LI><EM>Call and exit should be <EM>compatible</EM> with:</EM> <CODE>-Font</CODE> is currently instantiated to an atom. (<CODE>term_typing:atom/1</CODE>) </UL> </DL> <P> <A NAME="IDX6558"></A> <A NAME="IDX6559"></A> <DL> <DT><span class="define">PREDICATE:</span> <B>justify_text/1:</B> <DD><A NAME="IDX6560"></A> <P> <STRONG>Usage 1:</STRONG> <CODE>justify_text(+How)</CODE> <UL> <LI><EM>Description:</EM> <CODE>How</CODE> specifies how to justify the text within its bounding region. <CODE>How</CODE> must be one of the values left, right or center. This option defaluts to left. <LI><EM>Call and exit should be <EM>compatible</EM> with:</EM> <CODE>+How</CODE> is currently instantiated to an atom. (<CODE>term_typing:atom/1</CODE>) </UL> <P> <STRONG>Usage 2:</STRONG> <CODE>justify_text(-How)</CODE> <UL> <LI><EM>Description:</EM> Gets <CODE>How</CODE> is justified the text. <LI><EM>Call and exit should be <EM>compatible</EM> with:</EM> <CODE>-How</CODE> is currently instantiated to an atom. (<CODE>term_typing:atom/1</CODE>) </UL> </DL> <P><HR><P> Go to the <A HREF="ciao_1.html">first</A>, <A HREF="ciao_142.html">previous</A>, <A HREF="ciao_144.html">next</A>, <A HREF="ciao_241.html">last</A> section, <A HREF="ciao_toc.html">table of contents</A>. </BODY> </HTML>
