[PyQt] QWebEngineView triggerPageAction segfaults

[Florian Bruhin]

Hey,

* Rembrand at daxLAB <rembrand at daxlab.com> [2016-12-08 12:12:12 +0100]:
> I can use the triggerPageAcrion from QWebEngineView for some actions
> but not for all. Selecting and deselecting content works as well as
> refresh/reload  BUT everything related to an image like the actions: 
> 
>   QWebEnginePage::CopyImageToClipboard
>   QWebEnginePage::CopyImageUrlToClipboard
>   QWebEnginePage::DownloadImageToDisk
> 
> results in a segfault when executed.

Those are intended to be used with a context menu opened.

To be fair, they should probably just print a qWarning and do nothing
instead of segfaulting, but you'd need to report that in Qt's
bugtracker: https://bugreports.qt.io/

> If anybody knows a method to copy an image from QWebEngineview to
> the clipboard (or even download) without a segfault I would be very
> happy.

If it's already open, I wonder if QWebEngineView::toHtml or
toPlainText would give you something useful.

If not, you could also re-download it:

- Maybe the SavePage action does something sensible
- Or use a QNetworkAccessManager to download it independendly from
  QtWebEngine
- Some new API will also soon be added to trigger custom downloads:
  https://codereview.qt-project.org/#/c/173894/

> Is it possible that this is not implemented in PyQt5?

PyQt is just a wrapper over what Qt provides ;)

Florian

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