This means that symbol selectors can be aware of the correct variable
scope and values for both populating expression builder widgets and
for symbol previews.
If a .ui file is specified and the widget specified in the .ui file is not
supported by the widgetwrapper which is configured in the layer properties
the system will automatically try to find a better suitable widgetwrapper.
To do this, widgetwrappers (respectively their factories) can return a map of
supported widget types with priority values.
The widgetwrapper which offers the heighest priority for a certain widget type
will be used in case of a mismatch.
Sponsored by OPENGIS.ch special projects team (aka gis.se troubleshooting
section)
is not applied
This could also have been fixed by changing from the activated
signal to currentIndexChanged for the indexChanged connection,
but it looks like activated was intentionally used here.
This fixes performance issues with the attribute table visible when deleting a
large number of features.
The attribute table tries to behave smart in the following way:
* It tries to remove only the deleted rows as long as they are in one or a few
single blocks
* If there are more than 100 rows to delete and it starts to delete blocks
of a size smaller than 10 it assumes that the selection to delete is widely
distributed and that a reload of the whole model is less expensive than a
differential update.
Fix#10167
Size and Rotation can be defined by an expression for all symbols
composing a marker. Width can be defined by an expression for all
symbols composing a line.
For markers, a legend is generated for varying sizes. This allows
multivariate analysis legend in the case of classified/graduated colors.
The offset is now set along with size to maintain the relative position
of symbols composing a marker.
An asistant, with preview, is accessible through the data defined button
to help the user define the size expression. Three methods are
available: Frannery, Area and Radius.
Added a widget for use in categorized/classified symbology gui to set
the expression if needed. The assistant is also available from it.
This adds a new histogram tab to the graduated renderer, which
shows an interactive histogram of the values from the assigned
field or expression. Class breaks can be moved or added using
the histogram widget.
A base class, QgsHistogramWidget, has been created to display
histograms for a field or expression. In future this could be
used to show a histogram within a "selection statistics" panel.
Sponsored by ADUGA (http://www.aduga.org)
