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Thread: Getting image directly with runJavaScript

  1. #1
    Join Date
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    Default Getting image directly with runJavaScript

    Hi there,

    Firstly some source code:

    Qt Code:
    1. QWebEngineView *m_Browser = new QWebEngineView(this);
    2.  
    3. m_Browser->setUrl("http://www.nytimes.com/");
    4.  
    5. m_Browser->page()->runJavaScript("document.querySelector('img').src;", [&] (const QVariant &result) {
    6. qDebug()<< result << result.toByteArray();
    7. });
    To copy to clipboard, switch view to plain text mode 

    With runJavaScript I select the first found image and .src delivers the src tag of the image (e.g. https://static01.nyt.com/images/.....375.jpg). This works very well but if I remove the src tag I get the img object itself.
    Qt Code:
    1. m_Browser->page()->runJavaScript("document.querySelector('img');", [&] (const QVariant &result) {
    2. qDebug()<< result << result.toByteArray();
    To copy to clipboard, switch view to plain text mode 

    QDebug says I get "QVariant(QVariantMap, QMap())", it is possible to convert this response to put it in a QPixmap? I can use the src of the image to load the image but when it is possible to obtain the image directly that would be nice.

  2. #2
    Join Date
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    Qt products
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    Default Re: Getting image directly with runJavaScript

    I am not sure, but wouldn't you get the tag object if you don't specify the attribute?

    Does the img tag even have the notion of image data that a script could access?

    Cheers,
    _

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