This reverts commit 4e11613d2df064b138532c18f88bbf278c64f347.
We can actually make this synchronous just fine by collecting that
information when searching for the elements...
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
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.
This was more complicated than the other data/config/cachedir test
fixes, as QtWebEngine was accessing the datadir directly (and bypassing
standdarddir.data).
This means the tmpdir_data stub is not enough, we need to set
XDG_DATA_HOME to redirect access.
