-----Original message-----
From: Mikhail Voitenko [EMAIL PROTECTED]
Date: Fri, 01 Dec 2006 12:37:30 +0100
To: [email protected]
Subject: Re: [api-dev] Determining graphic mime types with Java
> Hi Fernand,
>
> Fernand Vanrie wrote:
> > Ian,
> >
> > In Basic I used the "DocumentStorage" and then out of an
> > "InputStream" the MimeType
> >
> > oPictures = oDocument.getDocumentStorage.getbyname("Pictures")
> > mFiles() = oPictures.getElementNames
> > oOriginalGraphic =
> >
getGraphDescritorFromStream(oPictures.getByName(mFiles(j)).getInputStream()
> > oOriginalGraphic.getPropertyValue("MimeType")
>
> Yes, this solution works well when a document is already opened.
But, if
> the only purpose is to access a zipfile, opening the document isnot
an
> optimal way.
Yes, but storing Graphics in an OO-doc is even a worser thing no ? :-)
>
> >
> > I few weeks ago I asked this list for an "URL" to the ZipFile, but
no
> > answer so far :-)
>
> Sorry, if I remember correctly the question was about converting of
> graphic URL to ZipFile URL. You even have proposed a solution based
on
> the mentioned example asking whether there is a better one. So I
would
> treat no answer in this case as a sign that there is no better
solution. ;)
>
> Best regards,
> Mikhail.
>
>
> >
> > Hope it helps a bit
> > Fernand
> >
> > an Shields schreef:
> >
> >>I'm still working on my filter and trying to understand how to
extract
> >>graphics from a Writer document in Java. So far, I cannot find
theJava
> >>equivalents to certain parts of the snippet at
>
>>http://codesnippets.services.openoffice.org/Writer/Writer.ExtractGfx.snip
> >>
> >>In particular, the closest thing I can find to the oZipArchive in
the
> >>example is XZipFileAccess which I created as follows:
> >> Object zipArgs[] = new Object[1];
> >> zipArgs[0] = xSource.getURL();
> >> XZipFileAccess xZipFileAccess =
> >> (XZipFileAccess) UnoRuntime.queryInterface(
> >> XZipFileAccess.class,
> >> m_xMCF.createInstanceWithArgumentsAndContext(
> >> "com.sun.star.packages.zip.ZipFileAccess",
> >> zipArgs, m_Ctx));
> >>>From a graphic property set I can extract a graphic URL
> >> String graphicURL = AnyConverter.toString(xGraphicPropSet
> >> .getPropertyValue("GraphicURL"));
> >>which gives me something like:
> >>vnd.sun.star.GraphicObject:10000000000003590000036584C7606C
> >>
> >>I have a gif and a jpg file in the doc I am working on and a file
> >>Pictures/10000000000003590000036584C7606C.jpg
> >>in the compressed .odt file, so I figure there ought to be some
way of
> >>determining the mime type programatically, but I'm at a
standstill.
> >>
> >>If I use
> >> PropertyValue[] mediaProps = new PropertyValue[1];
> >> mediaProps[0] = new PropertyValue();
> >> mediaProps[0].Name = "URL";
> >> mediaProps[0].Value = graphicURL;
> >>and then
> >> XPropertySet xGraphicProps = (XPropertySet)
> >> UnoRuntime.queryInterface(XPropertySet.class,
> >> xGraphicProvider.queryGraphicDescriptor(mediaProps));
>>>The property set claims to have a mimetype property, but it is an
empty
> >>string. I also tried
> >> XGraphic xGraphic = (XGraphic)
> >> UnoRuntime.queryInterface(
> >> XGraphic.class,
> >> xGraphicProvider.queryGraphic(mediaProps));
> >>And got a null XGraphic object returned.
> >>
> >>I am able to extract the 10000000000003590000036584C7606C part of
the
> >>above URL and use it to get an XInputStream
> >>String graphicURLPrefix =
> >> graphicURL.substring("vnd.sun.star.GraphicObject:".length());
> >> XInputStream graphicFile = (XInputStream)
> >> UnoRuntime.queryInterface(
> >> XInputStream.class,
> >> xZipFileAccess.getStreamByPattern("*Pictures/"
> >> + graphicURLPrefix + "*"));
> >>from which I can readthe file length, so I'm making some progress,
> >>although I still can't figure out the mime type.
> >>
> >>I'm left with at least two problems.
> >>
> >>1) There doesn't seem to be any equivalent in Java/Uno to the
> >>getByHierarchicalName call used in the snippet. It doesn't exist
in
> >>XZipFileAccess as far as I can see.
> >>
> >>2) Is there somethign wrong with the way I set up the media
properties
> >>for the graphics progider query? It seems that the
> >>vnd.sun.star.GraphicObject:10000000000003590000036584C7606C isn't
an
> >>adequate URL or I'm missing something else in the media
properties.
> >>
> >>
> >
> >
> >
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