[Edward]

Hi Guys,

I’ve been trying to incorporate a C++ pdf printer to my application; I have tested a simple application using Qt (not felgo) and this works, however when trying to integrate together it’s not working, I’m terrible when it comes to C++ but this is my code so far:

 

NOTE: I receive the error   file:allbookd/qml/Main.qml:12: module “com.allbookd.pdf” is not installed

 

My Code is:

 

main.cpp

#include <QApplication>
#include <FelgoApplication>
#include <QQmlApplicationEngine>
#include <QtAndroid>

#include <QQmlContext>
#include "pdf.h"


int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    FelgoApplication felgo;

    felgo.setPreservePlatformFonts(true);

    qmlRegisterType<pdf>("com.allbookd.pdf",3,0,"MyPdf");

    QQmlApplicationEngine engine;

    const QUrl url(QStringLiteral("qrc:/Main.qml"));
    QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,
                     &app, [url](QObject *obj, const QUrl &objUrl) {
        if (!obj && url == objUrl)
            QCoreApplication::exit(-1);
    }, Qt::QueuedConnection);

    felgo.setMainQmlFileName(QStringLiteral("qrc:/qml/Main.qml"));

    engine.load(QUrl(felgo.mainQmlFileName()));

     QtAndroid::hideSplashScreen(1000);

    return app.exec();
}

 

pdf.h

#ifndef PDF_H
#define PDF_H

#include <QObject>
#include <QDebug>
#include <QPainter>
#include <QTextDocument>
#include <QPdfWriter>
#include <QDate>
#include <QStandardPaths>
#include <QPrinter>
#include <QFile>

class pdf : public QObject
{
    Q_OBJECT
public:
    explicit pdf(QObject *parent = nullptr);

    void setCurrentDate();
    QString getCurrentDate() const;

signals:

public slots:
    QString getPdfPath() const;
    void saveInvoice();

private:
    QString currentDate;
    QString pdfPath;
};

#endif // PDF_H

 

pdf.cpp

#include "pdf.h"

pdf::pdf(QObject *parent) : QObject(parent)
{
    setCurrentDate();
    QString path = QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation);
    pdfPath = path + "/invoice_" + getCurrentDate() + ".pdf";
}

void pdf::setCurrentDate()
{
    QDate date(QDate::currentDate());
    int day = date.day();
    int month = date.month();
    int year =  date.year();

    currentDate = QString::number(day) + "_" + QString::number(month) + "_" + QString::number(year);
}

QString pdf::getCurrentDate() const
{
    return currentDate;
}

QString pdf::getPdfPath() const
{
    return pdfPath;
}

void pdf::saveInvoice()
{
    QPdfWriter pdfWriter(getPdfPath());

    pdfWriter.setPageSize(QPageSize(QPageSize::A4));

    QPainter painter(&pdfWriter);

    painter.scale(20.0, 20.0);

    QFile file(":/html/htmlcode.html");    
    if(file.open(QIODevice::ReadOnly)) {
        QByteArray temp = file.readAll();   
        QString html = temp;                
        QTextDocument doc;
        doc.setHtml(html);                 
        doc.drawContents(&painter);         
    } else {
        qDebug() << "error: " << file.error();
    }
}

 

Main.qml

import Felgo 3.0
import QtQuick 2.0
import QtQuick.Layouts 1.1
import QtQuick.Controls 2.0 as Quick2
import com.allbookd.pdf 3.0
import "model"
import "adminPages"
import "setupPages"
import "userPages"
import "helpPages"
import "videoPages"
import "toolkit"


//the rest isn't really needed as it wont load past the 'import' call

 

 

 

 

[jrrobles79]

Have you cleaned and rebuilded your project? Every time I got that error is because the application haven’t compiled all the new c++ classes I have added, also I will add a signal somewhere to tell the qml that the invoice has been saved

 

//on h
signals:
    void invoiceSaved(int error);


//on cpp
void pdf::saveInvoice()
{
int error = 0 // 0 all ok , 1 error    
QPdfWriter pdfWriter(getPdfPath());

    pdfWriter.setPageSize(QPageSize(QPageSize::A4));

    QPainter painter(&pdfWriter);

    painter.scale(20.0, 20.0);

    QFile file(":/html/htmlcode.html");    
    if(file.open(QIODevice::ReadOnly)) {
        QByteArray temp = file.readAll();   
        QString html = temp;                
        QTextDocument doc;
        doc.setHtml(html);                 
        doc.drawContents(&painter);   
        
    } else {
        qDebug() << "error: " << file.error();
error = 1;
    }

emit invoiceSaved(error)       

}

[Edward]

Thanks for the tip on signalling the completion!

I’ve cleaned/qmake/rebuilt my project and nothing seems to be working sadly….. unless it’s something in my .pro file?

 

CONFIG += felgo # old: CONFIG += vplay

PRODUCT_IDENTIFIER = com.XXX.XXXX.XXX
PRODUCT_VERSION_CODE = 33

qmlFolder.source = qml

assetsFolder.source = assets
DEPLOYMENTFOLDERS += assetsFolder

RESOURCES += resources.qrc # uncomment for publishing

QML_IMPORT_PATH =

QML_DESIGNER_IMPORT_PATH =


QT += androidextras \
quick gui core printsupport


SOURCES += \
    main.cpp \
    pdf.cpp

HEADERS += \
    pdf.h


android {
    ANDROID_PACKAGE_SOURCE_DIR = $$PWD/android
    OTHER_FILES += android/AndroidManifest.xml       android/build.gradle
}

ios {
    QMAKE_INFO_PLIST = ios/Project-Info.plist
    OTHER_FILES += $$QMAKE_INFO_PLIST

    FELGO_PLUGINS += firebase
    FELGO_PLUGINS += onesignal
}

DISTFILES += \
    //files normally here

 

[jrrobles79]

Maybe, but I don’t see where can be the error, I had a similar issue a few days ago when I added the felgo licence key on the pro file:

 

# contains(ANDROID_TARGET_ARCH, arm64-v8a) {
#   PRODUCT_VERSION_CODE=1011 # add 1 as suffix
#   PRODUCT_LICENSE_KEY = "FGH..."
# } else {
# PRODUCT_VERSION_CODE=1010 # add 0 as suffix
# PRODUCT_LICENSE_KEY="ABC...."
# }

I had to comment all and rebuild the project to make the new class work.

[Edward]

Okay,

It seems to be working –

cleaning/qmake/building was unsuccessful, but I deleted the directories, restarted my pc, clean/qmake/build and it worked!