QQuickImageProvider - requestImage() not implemented

metaDom

Hey guys,

I'm trying to pass a QImage to QML via QQuickImageProvider. Once QML requests the image I receive the following error:

"(null):0 ((null)): ImageProvider supports Image type but has not implemented requestImage()"

My provider looks as follows:

source:

#include "qmlimageprovider.h"

QmlImageProvider::QmlImageProvider()
    :QQuickImageProvider(QQuickImageProvider::Image)
{
}
QmlImageProvider::~QmlImageProvider()
{
}

void QmlImageProvider::setPic(QImage cameraFrame)
{
    this->cameraFrame = cameraFrame;
    emit cameraFrameReady();
}

QImage QmlImageProvider::requestImage(const QString &id, QSize *size, const QSize &requestedSize, bool requestedAutoTransform)
{
    Q_UNUSED(id);
    Q_UNUSED(size);
    Q_UNUSED(requestedSize);
    Q_UNUSED(requestedAutoTransform);

    qDebug() << "Request Image";

    return this->cameraFrame;
}

header:

#ifndef QMLIMAGEPROVIDER_H
#define QMLIMAGEPROVIDER_H

#include <QQuickImageProvider>
#include <QDebug>

class QmlImageProvider : public QObject, public QQuickImageProvider
{
    Q_OBJECT

    public:
        explicit QmlImageProvider();
        ~QmlImageProvider();

        void setPic(QImage cameraFrame);

    protected:
        virtual QImage requestImage(const QString &id, QSize *size, const QSize &requestedSize, bool requestedAutoTransform);

    signals:
        void cameraFrameReady();

    private:
        QImage cameraFrame;
};

#endif // QMLIMAGEPROVIDER_H

Thanks in advance!

jsulm

Shouldn't requestImage(...) be public?