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.
Run clang-tidy modernize-use-override to remove all the redundant
virtual keywords from overridden methods, and add some missing
overrides.
Another benefit is that this has also added the overrides
on destructors, which will cause a build failure if a base
class is missing a virtual destructor.
Instead of having different marker sizes in legend as separate legend nodes,
the new "collapsed" mode packs all sizes into one legend node.
This commit only makes it available in the API, not exposed in GUI yet.
Another bit in the project refactoring work to get rid of dependencies
on QgsProject singleton.
Reading of layer trees from XML is now split into two phases:
1. read XML and keep layer IDs
2. resolve layer IDs to QgsMapLayer instances (using QgsProject)
There are convenience methods to do both phases in one go.
spell check will be done automatically in words by default (when some conditions are fulfilled)
possibility to avoid in words checking by adding :* at the end in spelling.dat
one can add #spellok at the end of a line of code to skip spell check on this line
See https://github.com/qgis/QGIS-Enhancement-Proposals/issues/86
- Checking/unchecking a group doesn't change the check state of its children.
A node is visible if and only if it is checked and all its parents too.
- There is no more a semi-checked state for a group
- Ctrl-clic on a unchecked group will check the group and all its descendants.
- Ctrl-clic on a unchecked layer will check the lager and all its parents.
- Ctrl-clic on a checked group will uncheck the group and all its descendants.
- Ctrl-clic on a checked layer will uncheck the layer and all its parents.
- Those actions are available in contextual menu items in the tree view.
- Invisible layers because they or their parent(s) is unchecked are greyed out.
To make the implementation saner, the legend node that may be embedded within parent
layer node is kept separately from activeNodes.
(cherry picked from commit b385ebd9ba9272516eed61e5825a603fcee969e9)
