From: Norman Walsh <ndw@nwalsh.com>
Date: Tue, 11 Jun 2002 13:14:38 +0000 (+0000)
Subject: Made new parameters public
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6a5cde6e4e11692cbb0fbf0d78516d835eebc1a7;p=docbook-dsssl

Made new parameters public
---

diff --git a/xsl/html/graphics.xsl b/xsl/html/graphics.xsl
index 0a6e8a162..2896a29ea 100644
--- a/xsl/html/graphics.xsl
+++ b/xsl/html/graphics.xsl
@@ -24,7 +24,6 @@
      ******************************************************************** -->
 
 <lxslt:component prefix="xtext" elements="insertfile"/>
-
 <lxslt:component prefix="ximg" functions="new getWidth getDepth"/>
 
 <!-- ==================================================================== -->
@@ -70,10 +69,6 @@
 
 <!-- ==================================================================== -->
 
-<xsl:param name="nominal.image.width" select="6 * $pixels.per.inch"/>
-<xsl:param name="nominal.image.depth" select="4 * $pixels.per.inch"/>
-<xsl:param name="make.graphic.viewport" select="1"/>
-
 <xsl:template name="process.image">
   <!-- When this template is called, the current node should be  -->
   <!-- a graphic, inlinegraphic, imagedata, or videodata. All    -->
@@ -443,19 +438,26 @@ valign: <xsl:value-of select="@valign"/></xsl:message>
             <xsl:with-param name="scaled.contentwidth" select="$scaled.contentwidth"/>
             <xsl:with-param name="viewport" select="$viewport"/>
           </xsl:call-template>
-          <embed src="{$filename}" type="image/svg+xml">
-            <xsl:call-template name="process.image.attributes">
-              <xsl:with-param name="alt" select="$alt"/>
-              <xsl:with-param name="html.depth" select="$html.depth"/>
-              <xsl:with-param name="html.width" select="$html.width"/>
-              <xsl:with-param name="longdesc" select="$longdesc"/>
-              <xsl:with-param name="scale" select="$scale"/>
-              <xsl:with-param name="scalefit" select="$scalefit"/>
-              <xsl:with-param name="scaled.contentdepth" select="$scaled.contentdepth"/>
-              <xsl:with-param name="scaled.contentwidth" select="$scaled.contentwidth"/>
-              <xsl:with-param name="viewport" select="$viewport"/>
-            </xsl:call-template>
-          </embed>
+          <xsl:if test="@align">
+            <xsl:attribute name="align">
+              <xsl:value-of select="@align"/>
+            </xsl:attribute>
+          </xsl:if>
+          <xsl:if test="$use.embed.for.svg != 0">
+            <embed src="{$filename}" type="image/svg+xml">
+              <xsl:call-template name="process.image.attributes">
+                <xsl:with-param name="alt" select="$alt"/>
+                <xsl:with-param name="html.depth" select="$html.depth"/>
+                <xsl:with-param name="html.width" select="$html.width"/>
+                <xsl:with-param name="longdesc" select="$longdesc"/>
+                <xsl:with-param name="scale" select="$scale"/>
+                <xsl:with-param name="scalefit" select="$scalefit"/>
+                <xsl:with-param name="scaled.contentdepth" select="$scaled.contentdepth"/>
+                <xsl:with-param name="scaled.contentwidth" select="$scaled.contentwidth"/>
+                <xsl:with-param name="viewport" select="$viewport"/>
+              </xsl:call-template>
+            </embed>
+          </xsl:if>
         </object>
       </xsl:when>
       <xsl:otherwise>
@@ -463,6 +465,13 @@ valign: <xsl:value-of select="@valign"/></xsl:message>
           <xsl:attribute name="src">
             <xsl:value-of select="$filename"/>
           </xsl:attribute>
+
+          <xsl:if test="@align">
+            <xsl:attribute name="align">
+              <xsl:value-of select="@align"/>
+            </xsl:attribute>
+          </xsl:if>
+
           <xsl:call-template name="process.image.attributes">
             <xsl:with-param name="alt" select="$alt"/>
             <xsl:with-param name="html.depth" select="$html.depth"/>
@@ -480,7 +489,8 @@ valign: <xsl:value-of select="@valign"/></xsl:message>
   </xsl:variable>
 
   <xsl:choose>
-    <xsl:when test="$viewport != 0">
+    <!-- tables and alignment don't play nicely; skip the table if align is set -->
+    <xsl:when test="$viewport != 0 and not(@align)">
       <table border="0" summary="manufactured viewport for HTML img"
              cellspacing="0" cellpadding="0">
         <xsl:if test="$html.width != ''">
diff --git a/xsl/html/param.ent b/xsl/html/param.ent
index 16cf34159..bff56ca2f 100644
--- a/xsl/html/param.ent
+++ b/xsl/html/param.ent
@@ -40,11 +40,11 @@
 <!ENTITY funcsynopsis.decoration SYSTEM "../params/funcsynopsis.decoration.xml">
 <!ENTITY funcsynopsis.style SYSTEM "../params/funcsynopsis.style.xml">
 <!ENTITY function.parens SYSTEM "../params/function.parens.xml">
-<!ENTITY generate.meta.abstract SYSTEM "../params/generate.meta.abstract.xml">
 <!ENTITY generate.id.attributes SYSTEM "../params/generate.id.attributes.xml">
 <!ENTITY generate.index SYSTEM "../params/generate.index.xml">
 <!ENTITY generate.legalnotice.link SYSTEM "../params/generate.legalnotice.link.xml">
 <!ENTITY generate.manifest SYSTEM "../params/generate.manifest.xml">
+<!ENTITY generate.meta.abstract SYSTEM "../params/generate.meta.abstract.xml">
 <!ENTITY generate.section.toc.level SYSTEM "../params/generate.section.toc.level.xml">
 <!ENTITY generate.toc SYSTEM "../params/generate.toc.xml">
 <!ENTITY glossary.collection SYSTEM "../params/glossary.collection.xml">
@@ -80,8 +80,9 @@
 <!ENTITY linenumbering.separator SYSTEM "../params/linenumbering.separator.xml">
 <!ENTITY linenumbering.width SYSTEM "../params/linenumbering.width.xml">
 <!ENTITY link.mailto.url SYSTEM "../params/link.mailto.url.xml">
-<!ENTITY make.valid.html SYSTEM "../params/make.valid.html.xml">
+<!ENTITY make.graphic.viewport SYSTEM "../params/make.graphic.viewport.xml">
 <!ENTITY make.single.year.ranges SYSTEM "../params/make.single.year.ranges.xml">
+<!ENTITY make.valid.html SYSTEM "../params/make.valid.html.xml">
 <!ENTITY make.year.ranges SYSTEM "../params/make.year.ranges.xml">
 <!ENTITY manifest SYSTEM "../params/manifest.xml">
 <!ENTITY manual.toc SYSTEM "../params/manual.toc.xml">
@@ -89,6 +90,8 @@
 <!ENTITY navig.graphics.extension SYSTEM "../params/navig.graphics.extension.xml">
 <!ENTITY navig.graphics.path SYSTEM "../params/navig.graphics.path.xml">
 <!ENTITY navig.showtitles SYSTEM "../params/navig.showtitles.xml">
+<!ENTITY nominal.image.depth SYSTEM "../params/nominal.image.depth.xml">
+<!ENTITY nominal.image.width SYSTEM "../params/nominal.image.width.xml">
 <!ENTITY nominal.table.width SYSTEM "../params/nominal.table.width.xml">
 <!ENTITY olink.fragid SYSTEM "../params/olink.fragid.xml">
 <!ENTITY olink.outline.ext SYSTEM "../params/olink.outline.ext.xml">
@@ -104,6 +107,7 @@
 <!ENTITY process.empty.source.toc SYSTEM "../params/process.empty.source.toc.xml">
 <!ENTITY process.source.toc SYSTEM "../params/process.source.toc.xml">
 <!ENTITY profile.arch SYSTEM "../params/profile.arch.xml">
+<!ENTITY profile.attribute SYSTEM "../params/profile.attribute.xml">
 <!ENTITY profile.condition SYSTEM "../params/profile.condition.xml">
 <!ENTITY profile.conformance SYSTEM "../params/profile.conformance.xml">
 <!ENTITY profile.lang SYSTEM "../params/profile.lang.xml">
@@ -112,11 +116,10 @@
 <!ENTITY profile.revisionflag SYSTEM "../params/profile.revisionflag.xml">
 <!ENTITY profile.role SYSTEM "../params/profile.role.xml">
 <!ENTITY profile.security SYSTEM "../params/profile.security.xml">
+<!ENTITY profile.separator SYSTEM "../params/profile.separator.xml">
 <!ENTITY profile.userlevel SYSTEM "../params/profile.userlevel.xml">
-<!ENTITY profile.vendor SYSTEM "../params/profile.vendor.xml">
-<!ENTITY profile.attribute SYSTEM "../params/profile.attribute.xml">
 <!ENTITY profile.value SYSTEM "../params/profile.value.xml">
-<!ENTITY profile.separator SYSTEM "../params/profile.separator.xml">
+<!ENTITY profile.vendor SYSTEM "../params/profile.vendor.xml">
 <!ENTITY punct.honorific SYSTEM "../params/punct.honorific.xml">
 <!ENTITY qanda.defaultlabel SYSTEM "../params/qanda.defaultlabel.xml">
 <!ENTITY qanda.inherit.numeration SYSTEM "../params/qanda.inherit.numeration.xml">
@@ -144,13 +147,14 @@
 <!ENTITY table.border.thickness SYSTEM "../params/table.border.thickness.xml">
 <!ENTITY table.borders.with.css SYSTEM "../params/table.borders.with.css.xml">
 <!ENTITY tablecolumns.extension SYSTEM "../params/tablecolumns.extension.xml">
-<!ENTITY textinsert.extension SYSTEM "../params/textinsert.extension.xml">
 <!ENTITY tex.math.delims SYSTEM "../params/tex.math.delims.xml">
-<!ENTITY tex.math.in.alt SYSTEM "../params/tex.math.in.alt.xml">
 <!ENTITY tex.math.file SYSTEM "../params/tex.math.file.xml">
+<!ENTITY tex.math.in.alt SYSTEM "../params/tex.math.in.alt.xml">
+<!ENTITY textinsert.extension SYSTEM "../params/textinsert.extension.xml">
 <!ENTITY toc.list.type SYSTEM "../params/toc.list.type.xml">
 <!ENTITY toc.section.depth SYSTEM "../params/toc.section.depth.xml">
 <!ENTITY ulink.target SYSTEM "../params/ulink.target.xml">
+<!ENTITY use.embed.for.svg SYSTEM "../params/use.embed.for.svg.xml">
 <!ENTITY use.extensions SYSTEM "../params/use.extensions.xml">
 <!ENTITY use.id.as.filename SYSTEM "../params/use.id.as.filename.xml">
 <!ENTITY use.role.as.xrefstyle SYSTEM "../params/use.role.as.xrefstyle.xml">
diff --git a/xsl/html/param.xweb b/xsl/html/param.xweb
index ea6e69ca5..72adc5235 100644
--- a/xsl/html/param.xweb
+++ b/xsl/html/param.xweb
@@ -203,7 +203,6 @@ to be incomplete. Don't forget to read the source, too :-)</para>
 </reference>
 
 <reference><title>Miscellaneous</title>
-&graphic.default.extension;
 &formal.procedures;
 &formal.title.placement;
 &runinhead.default.title.end.punct;
@@ -224,6 +223,14 @@ to be incomplete. Don't forget to read the source, too :-)</para>
 &use.role.as.xrefstyle;
 </reference>
 
+<reference><title>Graphics</title>
+&graphic.default.extension;
+&nominal.image.width;
+&nominal.image.depth;
+&use.embed.for.svg;
+&make.graphic.viewport;
+</reference>
+
 <reference><title>Chunking</title>
 &html.ext;
 &html.extra.head.links;
@@ -351,11 +358,11 @@ around all these parameters.</para>
 <src:fragref linkend="funcsynopsis.decoration.frag"/>
 <src:fragref linkend="funcsynopsis.style.frag"/>
 <src:fragref linkend="function.parens.frag"/>
-<src:fragref linkend="generate.meta.abstract.frag"/>
 <src:fragref linkend="generate.id.attributes.frag"/>
 <src:fragref linkend="generate.index.frag"/>
 <src:fragref linkend="generate.legalnotice.link.frag"/>
 <src:fragref linkend="generate.manifest.frag"/>
+<src:fragref linkend="generate.meta.abstract.frag"/>
 <src:fragref linkend="generate.section.toc.level.frag"/>
 <src:fragref linkend="generate.toc.frag"/>
 <src:fragref linkend="glossary.collection.frag"/>
@@ -376,8 +383,8 @@ around all these parameters.</para>
 <src:fragref linkend="htmlhelp.encoding.frag"/>
 <src:fragref linkend="htmlhelp.enumerate.images.frag"/>
 <src:fragref linkend="htmlhelp.force.map.and.alias.frag"/>
-<src:fragref linkend="htmlhelp.hhc.frag"/>
 <src:fragref linkend="htmlhelp.hhc.folders.instead.books.frag"/>
+<src:fragref linkend="htmlhelp.hhc.frag"/>
 <src:fragref linkend="htmlhelp.hhc.section.depth.frag"/>
 <src:fragref linkend="htmlhelp.hhc.show.root.frag"/>
 <src:fragref linkend="htmlhelp.hhp.frag"/>
@@ -391,6 +398,7 @@ around all these parameters.</para>
 <src:fragref linkend="linenumbering.separator.frag"/>
 <src:fragref linkend="linenumbering.width.frag"/>
 <src:fragref linkend="link.mailto.url.frag"/>
+<src:fragref linkend="make.graphic.viewport.frag"/>
 <src:fragref linkend="make.single.year.ranges.frag"/>
 <src:fragref linkend="make.valid.html.frag"/>
 <src:fragref linkend="make.year.ranges.frag"/>
@@ -400,6 +408,8 @@ around all these parameters.</para>
 <src:fragref linkend="navig.graphics.frag"/>
 <src:fragref linkend="navig.graphics.path.frag"/>
 <src:fragref linkend="navig.showtitles.frag"/>
+<src:fragref linkend="nominal.image.depth.frag"/>
+<src:fragref linkend="nominal.image.width.frag"/>
 <src:fragref linkend="nominal.table.width.frag"/>
 <src:fragref linkend="olink.fragid.frag"/>
 <src:fragref linkend="olink.outline.ext.frag"/>
@@ -415,6 +425,7 @@ around all these parameters.</para>
 <src:fragref linkend="process.empty.source.toc.frag"/>
 <src:fragref linkend="process.source.toc.frag"/>
 <src:fragref linkend="profile.arch.frag"/>
+<src:fragref linkend="profile.attribute.frag"/>
 <src:fragref linkend="profile.condition.frag"/>
 <src:fragref linkend="profile.conformance.frag"/>
 <src:fragref linkend="profile.lang.frag"/>
@@ -423,11 +434,10 @@ around all these parameters.</para>
 <src:fragref linkend="profile.revisionflag.frag"/>
 <src:fragref linkend="profile.role.frag"/>
 <src:fragref linkend="profile.security.frag"/>
+<src:fragref linkend="profile.separator.frag"/>
 <src:fragref linkend="profile.userlevel.frag"/>
-<src:fragref linkend="profile.vendor.frag"/>
-<src:fragref linkend="profile.attribute.frag"/>
 <src:fragref linkend="profile.value.frag"/>
-<src:fragref linkend="profile.separator.frag"/>
+<src:fragref linkend="profile.vendor.frag"/>
 <src:fragref linkend="punct.honorific.frag"/>
 <src:fragref linkend="qanda.defaultlabel.frag"/>
 <src:fragref linkend="qanda.inherit.numeration.frag"/>
@@ -455,13 +465,14 @@ around all these parameters.</para>
 <src:fragref linkend="table.border.thickness.frag"/>
 <src:fragref linkend="table.borders.with.css.frag"/>
 <src:fragref linkend="tablecolumns.extension.frag"/>
-<src:fragref linkend="textinsert.extension.frag"/>
+<src:fragref linkend="tex.math.delims.frag"/>
 <src:fragref linkend="tex.math.file.frag"/>
 <src:fragref linkend="tex.math.in.alt.frag"/>
-<src:fragref linkend="tex.math.delims.frag"/>
+<src:fragref linkend="textinsert.extension.frag"/>
 <src:fragref linkend="toc.list.type.frag"/>
 <src:fragref linkend="toc.section.depth.frag"/>
 <src:fragref linkend="ulink.target.frag"/>
+<src:fragref linkend="use.embed.for.svg.frag"/>
 <src:fragref linkend="use.extensions.frag"/>
 <src:fragref linkend="use.id.as.filename.frag"/>
 <src:fragref linkend="use.role.as.xrefstyle.frag"/>
diff --git a/xsl/params/make.graphic.viewport.xml b/xsl/params/make.graphic.viewport.xml
new file mode 100644
index 000000000..1d3a25b50
--- /dev/null
+++ b/xsl/params/make.graphic.viewport.xml
@@ -0,0 +1,30 @@
+<refentry id="make.graphic.viewport">
+<refmeta>
+<refentrytitle>make.graphic.viewport</refentrytitle>
+<refmiscinfo role="type">boolean</refmiscinfo>
+</refmeta>
+<refnamediv>
+<refname>make.graphic.viewport</refname>
+<refpurpose>Use tables in HTML to make viewports for graphics</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment id='make.graphic.viewport.frag'>
+<xsl:param name="make.graphic.viewport" select="1"/>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsect1><title>Description</title>
+
+<para>The HTML <sgmltag>img</sgmltag> 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>
+</refsect1>
+</refentry>
diff --git a/xsl/params/nominal.image.depth.xml b/xsl/params/nominal.image.depth.xml
new file mode 100644
index 000000000..ac4935b00
--- /dev/null
+++ b/xsl/params/nominal.image.depth.xml
@@ -0,0 +1,22 @@
+<refentry id="nominal.image.depth">
+<refmeta>
+<refentrytitle>nominal.image.depth</refentrytitle>
+<refmiscinfo role="type">length</refmiscinfo>
+</refmeta>
+<refnamediv>
+<refname>nominal.image.depth</refname>
+<refpurpose>Nominal image depth</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment id='nominal.image.depth.frag'>
+<xsl:param name="nominal.image.depth" select="4 * $pixels.per.inch"/>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsect1><title>Description</title>
+
+<para>See <parameter>nominal.image.width</parameter>.</para>
+
+</refsect1>
+</refentry>
diff --git a/xsl/params/nominal.image.width.xml b/xsl/params/nominal.image.width.xml
new file mode 100644
index 000000000..f630af9c0
--- /dev/null
+++ b/xsl/params/nominal.image.width.xml
@@ -0,0 +1,38 @@
+<refentry id="nominal.image.width">
+<refmeta>
+<refentrytitle>nominal.image.width</refentrytitle>
+<refmiscinfo role="type">length</refmiscinfo>
+</refmeta>
+<refnamediv>
+<refname>nominal.image.width</refname>
+<refpurpose>The nominal image width</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment id='nominal.image.width.frag'>
+<xsl:param name="nominal.image.width" select="6 * $pixels.per.inch"/>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsect1><title>Description</title>
+
+<para>Graphic widths expressed as a percentage are problematic. In the
+following discussion, we speak of width and contentwidth, but
+the same issues apply to depth and contentdepth.</para>
+
+<para>A width of 50% means "half of the available space for the image."
+That's fine. But note that in HTML, this is a dynamic property and
+the image size will vary if the browser window is resized.</para>
+
+<para>A contentwidth of 50% means "half of the actual image width".
+But what does that mean if the stylesheets cannot assess the image's
+actual size? Treating this as a width of 50% is one possibility, but
+it produces behavior (dynamic scaling) that seems entirely out of
+character with the meaning.</para>
+
+<para>Instead, the stylesheets define a
+<parameter>nominal.image.width</parameter> and convert percentages to
+actual values based on that nominal size.</para>
+
+</refsect1>
+</refentry>
diff --git a/xsl/params/use.embed.for.svg.xml b/xsl/params/use.embed.for.svg.xml
new file mode 100644
index 000000000..766d41464
--- /dev/null
+++ b/xsl/params/use.embed.for.svg.xml
@@ -0,0 +1,28 @@
+<refentry id="use.embed.for.svg">
+<refmeta>
+<refentrytitle>use.embed.for.svg</refentrytitle>
+<refmiscinfo role="type">boolean</refmiscinfo>
+</refmeta>
+<refnamediv>
+<refname>use.embed.for.svg</refname>
+<refpurpose>Use HTML <sgmltag>embed</sgmltag> for SVG?</refpurpose>
+</refnamediv>
+
+<refsynopsisdiv>
+<src:fragment id='use.embed.for.svg.frag'>
+<xsl:param name="use.embed.for.svg" select="1"/>
+</src:fragment>
+</refsynopsisdiv>
+
+<refsect1><title>Description</title>
+
+<para>If non-zero, an <sgmltag>embed</sgmltag> element will be created for
+SVG figures. An <sgmltag>object</sgmltag> is <emphasis>always</emphasis> created,
+this parameter merely controls whether or not an additional <sgmltag>embed</sgmltag>
+is generated inside the <sgmltag>object</sgmltag>.</para>
+
+<para>On the plus side, this may be more portable among browsers and plug-ins.
+On the minus side, it isn't valid HTML.</para>
+
+</refsect1>
+</refentry>