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.
- composer shape style button (no other composer ones for now- they're
all getting removed with layouts anyway)
- point cluster/displacement renderer buttons
Button widgets for configuring symbol properties were reimplemented
multiple times throughout the codebase. This commit creates a new
standard QgsSymbolButton widget which should be used whenever
a button for configuring symbol properties is required.
Features include:
- automatic use of inline panels whenever possible
- dropdown menu with shortcuts to color settings, copy/pasting colors
- accepts drag and dropped colors to set symbol color
