Hi Shawn and Michal, thank you very much, this is what we´re looking for. Looking at the commit log, it seems our question was just in time.
Regards Stefan -----Ursprüngliche Nachricht----- Von: Shawn Rutledge <shawn.rutle...@qt.io> Gesendet: Dienstag, 11. Februar 2020 15:55 An: Neubert Stefan <n...@hekatron.de> Cc: interest@qt-project.org Betreff: Re: [Interest] QQuickImageProvider for PDF rendering > On 11 Feb 2020, at 15:38, Neubert Stefan <n...@hekatron.de> wrote: > > Hi list, > > we are using a QQuickImageProvider to load and render PDF pages through qtpdf > to display the pages in QtQuick. > Right now we use an additional qmlExtentionPlugin to get the information > about a pdf document, like page count > and request the page images in a QtQuick Image by setting the source property > to something like > "image:://ProviderName/PathToPDF/pageNumber". The image provider has some > queues holding the last > requested documents and pages to avoid reloading the pdfs all the time. This > is working quite fine. > > We are searching for an approach how to avoid the double loading, in our > extention plugin and in the image provider. > > One idea was to extend an image provider with Q_PROPERTY or something else to > access the meta data of the loaded > pdfs, like accessing a singleton object in QtQuick, but we don´t know if this > would be the right approach or even possible. > The qt blog about qtpdf in 2017 said something about adding QtQuick support, > but there has not been any work on it. > > Any suggestion on how to properly implement qtpdf in QQuick or how to extend > an image provider with additional > meta data is welcome. I’m working on the QtQuick feature set now. You can get the latest unfinished code from the wip/qtpdf branch in the qtwebengine repo. We moved qtpdf there because of the build system, mainly (chromium switching build systems made it difficult to upgrade the pdfium version in the old qtpdf repo, but the work was already mostly done in the webengine repo). ________________________________ Hekatron Technik GmbH Bruehlmatten 3a - 9 D-79295 Sulzburg Reg.-Ger. Freiburg HRB 300243 Geschaeftsfuehrer: Michael Roth, Daniel Liechti, Armin Berchtold Telefon +49 7634 500-0 Telefax +49 7634 500-316 ________________________________ _______________________________________________ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest
