Create QML Plugin (type not created)

lolopolosko

Hi!
I created plugin using Poppler lib, but it does not work

pro:
@TEMPLATE = lib
CONFIG += qt plugin
QT += declarative

LIBS += -L"/home/ruslan/Doc/Qt/Project/qmlPDf/libs" -lpoppler-qt4
INCLUDEPATH += src/

HEADERS +=
qmlpdf.h
qmlpdfplugin.h

SOURCES +=
qmlpdf.cpp
qmlpdfplugin.cpp@

plugin.h:
@#ifndef QMLPDFPLUGIN_H
#define QMLPDFPLUGIN_H

#include <QDeclarativeExtensionPlugin>

class qmlPDFPlugin : public QDeclarativeExtensionPlugin
{
Q_OBJECT
public:
void registerTypes(const char *uri);
};

#endif // QMLPDFPLUGIN_H
@

plugin.cpp:
@#include "qmlpdfplugin.h"
#include "qmlpdf.h"

#include <QtDeclarative>

void qmlPDFPlugin::registerTypes(const char *uri){
qmlRegisterType<qmlPDF>(uri,1,0,"PDFView");
}

Q_EXPORT_PLUGIN2(qmlpdfplugin,qmlPDFPlugin);
@

DeclarItem.cpp:
@#include "qmlpdf.h"
#include "poppler-qt4.h"

#include <QApplication>
#include <QDesktopWidget>
#include <QPainter>
#include <QFile>
#include <QDebug>

qmlPDF::qmlPDF(QDeclarativeItem *parent) :
QDeclarativeItem(parent)
{
docPDF = Poppler::Document::load("/home/ruslan/Doc/Qt/Project/PDFViewer/jni.pdf");
setFlag(ItemHasNoContents,false);
}
@

If I delete line @docPDF = Poppler::Document::load("/home/ruslan/Doc/Qt/Project/PDFViewer/jni.pdf"); @
my plugin is good work, but another @Project/qmlPDf/App.qml:8:5: PDFView is not a type
PDFView {
^ @

lolopolosko

"Source code":http://zoki.org.ua/example.tar.gz

lolopolosko

Please! Help me!

tolszak

I think you missed to add qmlPDF/libs directory to your LD_LIBRARY_PATH so plugin could not find poppler library, Just copy plotter library to place where your executable is. BTW (Why do you declare all member variables, used as property value storage, public? Shouldn't they be private or protected?)

lolopolosko

bq. I think you missed to add qmlPDF/libs directory to your LD_LIBRARY_PATH so plugin could not find poppler library

I added poppler library in LIBS variable
@LIBS += -L"libs-path" -lpoppler-qt4@

bq. Why do you declare all member variables, used as property value storage, public? Shouldn’t they be private or protected?

Qt Quick / QML works with the meta-object system and member variables are declared in the class as public does not see

tolszak

But it's in build time.
When your run application (for exmaple qmlviewer) you need to set this path in LD_LIBRARY_PATH or copy this poppler library to place where qmlviewer is or other place where libraries are searched.

@
LIBS+= -L....
@
works only in build time.
Please test with:
LD_LIBRARY_PATH="/home/ruslan/Doc/Qt/Project/qmlPDf/libs"

Additionally your App.qml files lacks of import.
If your plugin binary is in the same place where App.qml is the you should add:
@
"import qmlPDFPlugin 1.0"
@

Could you please read whole documentation regarding:
http://qt-project.org/doc/qt-4.8/declarative-tutorials-extending-chapter6-plugins.html

lolopolosko

Sorry, but this not work :(

lolopolosko

Ok.. this is works!
I am build this project on Windows
Copies libs (poppler, zlib, openjpeg, freetype) in %QTDIR%\bin