<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xi="http://www.w3.org/2001/XInclude" xmlns:src="http://nwalsh.com/xmlns/litprog/fragment" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="5.0" xml:id="make.graphic.viewport"> <refmeta> <refentrytitle>make.graphic.viewport</refentrytitle> <refmiscinfo class="other" otherclass="datatype">boolean</refmiscinfo> </refmeta> <refnamediv> <refname>make.graphic.viewport</refname> <refpurpose>Use tables in HTML to make viewports for graphics</refpurpose> </refnamediv> <refsynopsisdiv> <src:fragment xml:id="make.graphic.viewport.frag"> <xsl:param name="make.graphic.viewport" select="1"/> </src:fragment> </refsynopsisdiv> <refsection><info><title>Description</title></info> <para>The HTML <tag>img</tag> element only supports the notion of content-area scaling; it doesn't support the distinction between a content-area and a viewport-area, so we have to make some compromises.</para> <para>If <parameter>make.graphic.viewport</parameter> is non-zero, a table will be used to frame the image. This creates an effective viewport-area. </para> <para>Tables and alignment don't work together, so this parameter is ignored if alignment is specified on an image.</para> </refsection> </refentry>