In the algorithm execution dialog, this adds buttons to allow
users to save the current log (to text or HTML files), copy the
log contents to the clipboard, and clear the log.
In some cases it is useful to add extra information to the symbols in the legend.
This work allows definition of additional labels in vector layer properties > Legend tab.
Previously QgsSvgCache would often try to fetch remote images
using a network request on the main thread, by calling
processEvents repeatedly until the request was complete.
This caused lots of bugs, since the main thread processEvents
would proceed with all kinds of stuff assuming that the
svg fetch operation was complete, leading to frequent crashes
and deadlocks and making remote svg use impossible (it's
likely that the SVG cache remote fetching code was written
in the pre-multi-threaded rendering era).
There's no way to fix this with async svg fetching - we
HAVE to remove the processEvents call, and a QEventLoop
won't help either (since the method may be called on the
main thread). Accordingly the only solution is to
fetch the requested svg in the background, and return
a temporary "downloading" svg for use in the meantime.
We use a QgsNetworkContentFetcherTask to do this, so it's
nicely integrated with task manager.
A request task is fired up when a remote svg is requested
for the first time, with the temporary downloading svg
returned for use by the caller asynchronously. QgsSvgCache
then emits the remoteSvgFetched signal when a previously
requested remote SVG has been successfully fetched,
triggering a map canvas redraw with the correct SVG
graphic.
Fixes#18504
Also:
- move doxygen comments to header files so that they get included
in Python docstrings
- remove duplicate doxygen implemented in both header and footer
- remove some redundant doxygen for overridden methods
- add some missing docs
options->color tab
This brings all of QGIS' color scheme handling to a more logical and
user-discoverable place. Previously this functionality was only
available inside the color dialog itself (i.e. users would have to start
changing a color before they could create and edit schemes)
Creates a new QgsProxyStyle subclass of QProxyStyle which
automatically sets the base style to match the current
application style (creating a new QStyle object, since
setting the base style takes ownership). Additionally,
QgsProxyStyle correctly parents the style to a parent
widget, avoiding leaks since calling QWidget::setStyle
doesn't transfer ownership.
Fixes incorrect theme used for layer tree view since
addition of indicator icons.
The search widget wrappers for relations have two issues
* They recursively load whatever relations are defined. With self-referencing this leads to 💀
This is addressed by only loading one level of relations in search widgets.
* They would load even when hidden, leading to long load times on attribute table opening.
We now only actually load the form on the show event
This adds a mini-framework for display of extra icons in layer tree views
next to layer and group names. Tool tip text can be associated with indicators
to give extra context for indicators. In addition, a signal gets emitted
when user clicks indicators and custom actions can be defined.
The main window's layer tree view (ToC) gets support for indicators
that are shown when a vector layer has a filter applied. This makes it easier
for users to understand that they are looking at a subset of all data.
Clicking the indicator's icon brings up query builder.
- Switch to flags instead of boolean argument
- Move logic for layer validity to canRunUsingLayer
- Add unit test
Also remove settings flag to hide duplicate features action
