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<p>I think only If you give him a QIODevice which read from an URI.</p>
<p></p>
<p>------------------------------------</p>
<p>QImageReader r;</p>
<p>r.setFileName("http://www.index.hu/alma.jpg");</p>
<p>qDebug() << r.canRead();</p>
<p></p>
<p>false</p>
<p></p>
<p>r.setFileName("file:///home/gyuri/kepek/becs/dsc03906.jpg");</p>
<p>qDebug() << r.canRead();</p>
<p></p>
<p>false</p>
<p></p>
<p>r.setFileName("/home/gyuri/kepek/becs/dsc03906.jpg");</p>
<p>qDebug() << r.canRead();</p>
<p></p>
<p>true</p>
<p>------------------------------------------------------------------------------------</p>
<p></p>
<p>I invented the following solution:</p>
<p>Add a new service type, called QImageIOPlugins</p>
<p>Create a .desktop file for each image format, with two custom parameters:</p>
<p>X-KDE-ImageFormat</p>
<p>X-KDE-MimeType</p>
<p></p>
<p>These .desktop files contains the mapping between mime-types and image format names. Everything else is in the mime-database already.</p>
<p></p>
<p>Resurrected a very small KImageIO class, which contains only the essential functions for the Imageformat-mimetype conversion:</p>
<p></p>
<p> static QString pattern(Mode mode = Reading);</p>
<p> static QStringList typeForMime(const QString& mimeType);</p>
<p> static QStringList mimeTypes( Mode mode = Writing );</p>
<p> static bool isSupported( const QString& _mimeType, Mode _mode = Writing );</p>
<p> ( and maybe QString KImageIO::suffix(const QString& type) )</p>
<p></p>
<p>It's more lightweight than .kimgio files and the old KImageIO class.</p>
<p></p>
<p>P.S: as I see, there are commits which uses only the image format list from QImageReader|Writer, is it enough? Then I dump out my mini-KImageIO.</p>
<p></p>
<p>e.g:</p>
<p>http://websvn.kde.org/trunk/KDE/kdelibs/kio/kfile/kfiledialog.cpp?rev=497896&r1=497724&r2=497896</p>
<p></p>
<p></p>
<p>2006. január 14. 19.43 dátummal Gregory Hayes ezt írta:</p>
<p>> I vote for option 2. I think QImageReader and friends provide us with most</p>
<p>> of what we need. Do you know if the QimageReader::canRead can handle URIs?</p>
<p>></p>
<p>> Greg</p>
<p>> -</p>
<p>></p>
<p>> On 1/14/06, Szombathelyi György <gyurco@freemail.hu> wrote:</p>
<p>> > Hi!</p>
<p>> ></p>
<p>> > I removed kimageio from kdelibs trunk yesterday, now I've got a problem</p>
<p>> > of converting some uses in kdebase.</p>
<p>> > Especially KImageIO::pattern() and KImageIO::mimeTypes() are problematic,</p>
<p>> > since there's no such concept in QImageReader and QImageWriter. Qt only</p>
<p>> > knows</p>
<p>> > the "format", which can be e.g "jpg", "png", etc...</p>
<p>> > Now I see 2 options:</p>
<p>> > 1. Restore KImageIO and the .kimgio files, which has the neccessary</p>
<p>> > information, and clean up KImageIO</p>
<p>> > 2. Add the Qt image format name to the mime database, e.g. with</p>
<p>> > X-KDE-imageformat=jpg. Then new convenience function(s) can be added to</p>
<p>> > kmimetype.h, e.g allImageFormats() or sth. else.</p>
<p>> ></p>
<p>> > Option 1 is simplest, but .kimgio files store nearly the same data as the</p>
<p>> > mime</p>
<p>> > files, except the image format name.</p>
<p>> ></p>
<p>> > Any opinions? (or other ideas?)</p>
<p>> ></p>
<p>> > Bye,</p>
<p>> > György</p>
<p>> ></p>
<p>> > ____________________________________________________________________</p>
<p>> > Miert fizetsz az internetert? Korlatlan, ingyenes internet hozzaferes a</p>
<p>> > FreeStarttol</p>
<p>> > Probald ki most! http://www.freestart.hu</p>
<p></p>
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