When we hide the context menu on QtWebEngine, we get a mouse event
relative to the QMenu in the filter, which means tab.elements.at_pos
will get called with a negative position (and thus assert) or at least a
wrong position.
From the QApplication.postEvent docs:
http://doc.qt.io/qt-5/qcoreapplication.html#postEvent
The event must be allocated on the heap since the post event queue
will take ownership of the event and delete it once it has been
posted. It is not safe to access the event after it has been posted.
We can't reliably guarantee that from Python, so we need to use
sendEvent instead.
Previously, the drawn hint labels were affected by the zoom, i.e., they
were stretched out by QtWebKit and actually had to be drawn at the
unzoomed position.
The Python/C++ API gives us coordinated adjusted for zoom, so
we always *negatively* adjusted them to get the unzoomed coordinates.
JS gave us the original coordinates, so we stretched them out according
to the zoom if adjust_zoom was given (which means only when clicking a
link).
Now we always operate in term of display coordinates: The point where we
draw the hint label is equal to the point we're clicking.
Thus, the zoom level for javascript is always adjusted, and the Python
zoom level is never (negatively) adjusted.
The following methods were only used for hint labels and thus removed
now:
- document_element
- create_inside
- find_first
- set_inner_xml
- remove_from_document
- set_style_property
This moves various stuff around and out of QtWebKit code:
- open_target and hint_target are now in TabData, not on the WebPage
- As much as possible got extracted from WebPage.acceptNavigationRequest
to AbstractTab._on_link_clicked, with a new link_clicked signal added
to WebPage. However, we need to decide whether to handle the request
in this tab or not inside acceptNavigationRequest, so we have some
code duplicated there and in WebEnginePage.acceptNavigationRequest.
- _mousepress_opentarget (i.e., setting the open_target) is now handled
in MouseEventFilter, not in WebView.
For some reason, when e.g. visiting duckduckgo and then heise.de,
QtWebEngine suddenly gets a new QOpenGLWidget as focusProxy.
We install an extra eventFilter observing the ChildAdded event and
re-adding the MouseEventFilter when that happens.
Since we now use QWebEngineScript, we can't easily know when the script
finished running and we can access window._qutebrowser.scroll.
We instead assume the initial position (if we don't get a
scrollPositionChanged) will always be (0, 0), and explicitly set it
to (None, None) (displaying ???) if we can't connect that signal.
We now load the JS code as a QWebEngineScript, which sets up
window._qutebrowser with various "modules". That means we don't have to
pass the whole module every time we want to execute something.
It doesn't actually work yet (as it claims the field is not editable),
but at least does not crash when the backend limitation for the command
is removed.
webelem.javascript_escape got renamed to javascript.string_escape, and a
new javascript.assemble got added to make it easier to call a function
inside a .js file.
