* [theme] fix invisile text in field expression widget in dark themes
only on MacOS at the moment
* switch back to original palette
* remove useless includes
* don't use pointer
This hack was introduced when Qt had poor support of Mac Dark Theme so that the combination of the default QGIS theme and Dark Theme on the OS was forcing to use QGIS Night Mapping theme.
Since Qt 5.12, it does look good and it's the last Qt LTS version.
If the group (or the root) has any queryable child, it is flagged as queryable
Also fixes an issue with json enconding with rasters.
Fixes#21697
Funded by: Kanton Zug
This line symbol type is designed to replicate the ArcGIS Hash Line
symbol layer type. It allows for a repeating line segment to be
drawn over the length of a feature, with a line-sub symbol used
to render each individual segment.
To reduce code duplication, this is heavily based off the current
line marker symbol layer, since the functionality is almost
identical (draw some sub symbol at some interval along a line).
Accordingly, I've split off QgsMarkerLineSymbolLayer to move
as much of the common functionality as possible to a new abstract
base class, so that only the actual marker/line segment rendering
occurs in the marker line/hash line subclasses.
This also gives the hash line all the existing placement options
permissible for marker lines -- e.g. first/last vertex, mid points,
regular intervals, etc.
The hash line length and angle can have data defined overrides,
which are evaluated per-line segment, allowing for the hash line
to change size and angle over the length of a single rendered
feature.
K-nearest neighbour joins from the Processing toolbox!
This algorithm takes an input vector layer and creates a new
vector layer that is an with additional attributes in its attribute table
The additional attributes and their values are taken from a second
vector layer, where features are joined by finding the closest features
from each layer.
By default only the single nearest feature is joined, but optionally
the join can use the n-nearest neighboring features instead.
If a maximum distance is specified, then only features which are
closer than this distance will be matched.
nearest neighbor search based on QgsGeometry to QgsGeometries
Previously only point - geometry was possible. But with this
change, you can safely and accurately use QgsSpatialIndex
to determine the nearest neighbours between any types of
geometries.
In QGIS 3.4, Selection can be printed in Image output and not in PDF or SVG output.
A fix has been done 2752f83 to fix inconsistent use of layout render context flags, and draw selection is activated with a flag.
