[
https://issues.apache.org/jira/browse/FOP-2852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16795109#comment-16795109
]
Matthias Reischenbacher commented on FOP-2852:
----------------------------------------------
First you transform to the intermediate tree XML format, here a code sample:
{code:java}
//Create a user agent
FOUserAgent userAgent = this.fopFactory.newFOUserAgent();
this.configureUserAgent(userAgent, targetResolution);
//Create an instance of the target document handler so the IFSerializer
//can use its font setup
String mime = mimeOutput == null ? MimeConstants.MIME_PDF : mimeOutput;
//Create an instance of the target renderer so the XMLRenderer can use its font
setup
Renderer targetRenderer = userAgent.getRendererFactory().createRenderer(
userAgent, mime);
//Create the XMLRenderer to create the area tree XML
XMLRenderer xmlRenderer = new XMLRenderer(userAgent);
//Tell the XMLRenderer to mimic the target renderer
xmlRenderer.mimicRenderer(targetRenderer);
//Make sure the prepared XMLRenderer is used
userAgent.setRendererOverride(xmlRenderer);
File tempFile;
// Setup output
OutputStream out;
try
{
tempFile = File.createTempFile("fop-if", ".xml");
out = new FileOutputStream(tempFile);
}
catch (IOException e)
{
throw new RuntimeException(e);
}
out = new BufferedOutputStream(out);
Source src = new DOMSource(xslFoDoc);
try {
Fop fop = this.fopFactory.newFop(null, userAgent, out);
// Setup XSLT
TransformerFactory factory = TransformerFactory.newInstance();
Transformer transformer = factory.newTransformer();
// Resulting SAX events (the generated FO) must be piped through to FOP
Result res = new SAXResult(fop.getDefaultHandler());
// Start XSLT transformation and FOP processing
transformer.transform(src, res);
} finally {
IOUtils.closeQuietly(out);
}
{code}
Then you modify the generated XML, e.g. by applying a XSL transform (make sure,
to give the list-item-label elements in your FO markup an "id", that matches
the XPath expression in the template):
{code:java}
<xsl:template match="block[starts-with(@prod-id, 'list-item-label')]">
<xsl:copy>
<xsl:copy-of select="@*"/>
<xsl:variable name="currentBaseLine" select="lineArea/@bpda"/>
<xsl:variable name="nextBaseLine"
select="parent::block/following-sibling::block[1]/block[1]/lineArea[1]/@bpda"/>
<xsl:variable name="diff" select="($nextBaseLine - $currentBaseLine)"/>
<xsl:attribute name="bap">
<xsl:value-of select="concat('0 0 ', $diff, ' 0')"/>
</xsl:attribute>
<xsl:attribute name="padding-before">
<xsl:value-of select="$diff"/>
</xsl:attribute>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template>
{code}
And then you convert the transformed intermediate XML format to PDF:
{code:java}
//Create a user agent
FOUserAgent userAgent = this.fopFactory.newFOUserAgent();
this.configureUserAgent(userAgent, targetResolution);
//Setup target handler
String mime = mimeOutput == null ? MimeConstants.MIME_PDF : mimeOutput;
try {
//Setup fonts and user agent
FontInfo fontInfo = new FontInfo();
//Construct the AreaTreeModel that will received the individual pages
AreaTreeModel treeModel = new RenderPagesModel(userAgent,
mime, fontInfo, out);
//Iterate over all area tree files
AreaTreeParser parser = new AreaTreeParser();
Source src = new DOMSource(xslFoDoc);
parser.parse(src, treeModel, userAgent);
//Signal the end of the processing. The renderer can finalize the target
document.
treeModel.endDocument();
}
catch (SAXException e)
{
throw new FOPException(e);
} finally {
IOUtils.closeQuietly(out);
}
{code}
As I said, all a bit hacky, but it works :).
> relative-align on list-item is ignored
> --------------------------------------
>
> Key: FOP-2852
> URL: https://issues.apache.org/jira/browse/FOP-2852
> Project: FOP
> Issue Type: Bug
> Affects Versions: 2.3
> Reporter: Björn Kautler
> Priority: Major
> Attachments: image-2019-03-18-15-51-15-406.png
>
>
> When you have a list-item where in the first line is an inline image, the
> enumeration is too high as it is top-aligned like this:
> !image-2019-03-18-15-51-15-406.png!
> As far as I have seen this is ok as default behavior.
> But if the `list-item` has the attribute `relative-align` set to `baseline`
> it should align to the baseline as far as I understood, but it seems Fop
> totally ignores this.
> The screenshot is made with the attribute set.
>
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
