QML show PDF file

eyllanesc

You can use poppler as I show in this post: https://stackoverflow.com/a/52844509/6622587

Melle_87

@artwaw: Thank you. I will try Poppler.

Melle_87

This post is deleted!

Melle_87

@eyllanesc: Ok. Thank you for the example. I compiled and installed the plugin. But why is it "import org.docviewer.poppler 1.0"?
This gives me the error "module "org.docviewer.poppler" is not installed".
Maybe I should mention that I am cross compiling on Ubuntu my application for raspberry pi.

jsulm

@Melle_87 said in QML show PDF file:

But why is it "import org.docviewer.poppler 1.0"?

Well, because you need to import Poppler stuff if you want to use it.
"I compiled and installed the plugin" - did you cross-compiled it for your device or host machine?

Melle_87

@jsulm: At the moment I am a little bit confused.
I compiled and installed it directly on my raspberry.

jsulm

@Melle_87 said in QML show PDF file:

I compiled and installed it directly on my raspberry

It needs to be in your sysroot. Did you resync your sysroot after installing on RPi?

Melle_87

@jsulm: Ah okay. Of course, I have to resync my sysroot. I resynced the folders /usr/local/include, /usr/local/lib and /usr/lib/arm-linux-gnueabihf/qt5 from raspberry to host.

Then I added this to my qmldir file:

module org.docviewer.poppler
PDFView 1.0 PDFView.qml
plugin popplerPlugin
typeinfo popplerPlugin.qmltypes

But now I get the error message:

plugin "popplerPlugin" not found

What is the reason for this error message?

jsulm

@Melle_87 I'm not a QML expert.
Not sure you have to change qmldir.
When you installed Poppler on RPi - where was it installed?

Melle_87

@jsulm: I think on raspi it was installed in /usr/lib/arm-linux-gnueabihf/qt5/qml/org/docviewer/poppler. Because in this folder I find popplerPlugin.qmltypes.

KroMignon

@Melle_87 said in QML show PDF file:

think on raspi it was installed in /usr/lib/arm-linux-gnueabihf/qt5/qml/org/docviewer/poppler. Because in this folder I find popplerPlugin.qmltypes.

You can follow the import process when setting environment variable QML_IMPORT_TRACE.
As written in documentation, QML import path is:

Additional import paths can be added through QQmlEngine::addImportPath() or the QML2_IMPORT_PATH environment variable. When running the qmlscene tool, you can also use the -I option to add an import path.

Take a look here ==> https://doc.qt.io/qt-5/qtqml-syntax-imports.html#qml-import-path

jsulm

@Melle_87 Does it work if you do not change qmldir?

Melle_87

@KroMignon: Thank you. So it is possible to set this QML2_IMPORT_PATH variable in Qt Creator in the Run Environment? I set this variable to /usr/lib/arm-linux-gnueabihf/qt5/qml/org/docviewer/poppler. Is this correct?

Melle_87

@jsulm: If I don't change the qmldir file I get "module "org.docviewer.poppler" is not installed".

KroMignon

@Melle_87 said in QML show PDF file:

So it is possible to set this QML2_IMPORT_PATH variable in Qt Creator in the Run Environment?

Yes, I think so. But I would suggest you first to try out QML_IMPORT_TRACE to be aware why your plugin in not loaded.
Perhaps there are missing libs?
==> https://doc.qt.io/qt-5/qtquick-debugging.html#debugging-module-imports

Melle_87

@KroMignon: Thank for alle the tipps. I leave my qmldir file as it is and only set QML2_IMPORT_PATH = /usr/lib/arm-linux-gnueabihf/qt5/qml. Now the everything seems to be loaded correctly.
But now I have a new problem. On start up I get a "Segmentation fault".
I think the problem is that I compiled poppler with qmake of Qt 5.11.3. But actually I use Qt5.12.4. I have both Qt versions on the raspi. How can I explicitly use the qmake of Qt5.12.4 for compiling poppler?

jsulm

@Melle_87 said in QML show PDF file:

How can I explicitly use the qmake of Qt5.12.4 for compiling poppler?

By calling the qmake from the Qt version you want to use (use absolute path to qmake).

Melle_87

@jsulm: Hmmm... Okay. Unfortunately in Qt5.12.4 folder there is no qmake available ...

jsulm

@Melle_87 said in QML show PDF file:

Qt5.12.4 folder there is no qmake available

Then this is not a valid Qt installation.
How did you install it?

Melle_87

@jsulm: It was not me who installed the Qt version ... So I have to ask. But is there a way to get the qmake of this version?
Or maybe it would be easier to cross compile Poppler?