Take screenshot of MapGraphicsView (in C++)

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03-28-2016 01:14 PM
MaximilianSchönenberg
New Contributor II

Hello,

I want to take a screenshot of the MapGraphicsView and export it to png, jpg..

I tried this, but it returns just a grey picture:

//EsriRuntimeQt::MapGraphicsView* m_MapGraphicsView;
auto pixmap = QPixmap::grabWidget(m_MapGraphicsView);
QFile file(fileUrl.toLocalFile());
file.open(QIODevice::WriteOnly);
pixmap.save(&file, "PNG");

Is there another way of taking a screenshot?

Thanks in advance!

Best regards,

Maximilian

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MaximilianSchönenberg
New Contributor II

Thank you for your answer Koushik, but it's the same result as before (see attachment).

This is what finally works for me (thanks to Norbert Thoden​):

//QVBoxLayout* m_VBox
QRect rect(m_VBox->itemAt(1)->geometry());
QMutex m(QMutex::NonRecursive);
m.lock();
m.tryLock(100);
auto pixmap = QGuiApplication::primaryScreen()->grabWindow(winId(),rect.x(), rect.y(), rect.width(), rect.height());
QFile file(fileUrl.toLocalFile());
file.open(QIODevice::WriteOnly);
pixmap.save(&file, "PNG");

Best regards,

Maximilian Schönenberg

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4 Replies
LucasDanzinger
Esri Frequent Contributor

This doesn't directly help you right now, but I just wanted to let you know that with our Quartz release, there will be a function directly on the MapView that will export it to an image.

MaximilianSchönenberg
New Contributor II

Ok, but Quartz isn't released yet. Is there another way of taking a screenshot of the MapView with 10.2.6?

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KoushikHajra
Esri Contributor

You can try this.  You might want to change the size of the rectangle.  But this should work:

    QRect rect(QPoint(0, 100), QSize(400, 400)) ;
    QPixmap image = QWidget::grab(rect);
    QString path = QDir::tempPath() + QString("/testImage.png");
    bool success = image.save(path);
    qDebug() << success;

Possibly didn't work because there was no size specified maybe?

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MaximilianSchönenberg
New Contributor II

Thank you for your answer Koushik, but it's the same result as before (see attachment).

This is what finally works for me (thanks to Norbert Thoden​):

//QVBoxLayout* m_VBox
QRect rect(m_VBox->itemAt(1)->geometry());
QMutex m(QMutex::NonRecursive);
m.lock();
m.tryLock(100);
auto pixmap = QGuiApplication::primaryScreen()->grabWindow(winId(),rect.x(), rect.y(), rect.width(), rect.height());
QFile file(fileUrl.toLocalFile());
file.open(QIODevice::WriteOnly);
pixmap.save(&file, "PNG");

Best regards,

Maximilian Schönenberg

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