Now the widgets factories can give a score on how good they could handle
a widget.
Additionaly, plugins can be added to choose a widget factory in function
of an external information. One of them uses a table in PostgresQL to
allow specification of the widget type and configuration.
I took the opportunity to remove a few deprecated method in relation to
this.
segments shorter than a certain threshold or sharp corners
with an angle exceeding a threshold
Expose the angle threshold to processing smooth algorithm
Also:
- optimise QgsGeometry::smooth for new geometry classes
- Fix smooth does not work with geometries containing Z/M
Moved all temporary projector members to a private class,
so even recursive block() calls will not affect each other
(there is no new performance penalty as block() call always
recomputes the temporary control point matrix anyway)
This allows to declare data dependencies between layers. A data
dependency occurs when a data modification in a layer, not by direct
user manipulation may modify data of other layers.
This is the case for instance when geometry of a layer is updated by a
database trigger after modification of another layer's geometry.
Instead of using QFont's inbuilt capitalization support, which
applies only on rendering and accordingly fails for curved
labels which are drawn one character at a time, we now manually
capitalize label text while registering features.
The capitalize first method from Qt was reimplemented in QgsStringUtils
(together with what I expect is better handling of unicode characters
over the Qt method).
This change also makes it possible to implement other capitalization
methods not directly supported by Qt
This is a partial implementation - QMaps are still used internally
within QgsVectorLayer to track the alias/default values
between attribute edit operations.
Sponsored by DB Fahrwegdienste GmbH
Allows an expression to be set for a vector layer field which
is used to evaluate a default value for this field.
A new method,
QgsVectorLayer::defaultValue( int index,
const QgsFeature& feature = QgsFeature(),
QgsExpressionContext* context = nullptr )
has been added which evaluates the default value for a given field
using the optionally passed feature and expression context. This
allows default values to utilise properties of the feature
which exist at the time of calling, such as digitized geometries.
The expression context parameter allows variables to be used
in default value expressions, making it easier to eg insert
a user's name, current datetime, project path, etc
Default values are set using QgsVectorLayer::setDefaultValueExpression()
and retrieved using defaultValueExpression()
Adds the ability to specify a list of text substitutes to make
which apply to label text. Eg abbrevating street types.
Users can export and import lists of substitutes to make
reuse and sharing easier.
Now the widgets factories can give a score on how good they could handle
a widget.
Additionaly, plugins can be added to choose a widget factory in function
of an external information. One of them uses a table in PostgresQL to
allow specification of the widget type and configuration.
I took the opportunity to remove a few deprecated method in relation to
this.
Now the dialogs use a copy of the ramp, and the edited
ramp is retrieved by calling ramp() on the dialog after
it is executed.
Avoids pointer lifetime issues by storing and working
on a ramp pointer which the dialog does not have ownership
on.
Also fix a bunch of leaks relating to cloning color ramps.
QgsVectorColorRamp -> QgsColorRamp
QgsVectorGradientColorRamp -> QgsGradientColorRamp
QgsRandomColors -> QgsRandomColorRamp
QgsRandomColorRamp -> QgsLimitedRandomColorRamp
QgsVectorColorBrewerColorRamp -> QgsColorBrewerColorRamp
These color ramps are used throughout all of QGIS (not
just in vector symbology) and the current names are
misleading.
This feature adds a 'collect' aggregation method resulting in a
single multipart geometry from a list of geometries. This is exposed
in the expression engine via the existing aggregate() function,
as well as a new collect() function.
Adds a new QgsGeometry::lineLocatePoint() function for
retrieving the distance along a linestring to the nearest
position on the linestring to a given point.
* It's now implicitly shared, meaning that changes to the config
can be supervised and a signal is sent from QgsVectorLayer and
there is no risk of elements suddenly being deleted.
* Remove a bunch of methods that were in QgsVectorLayer for legacy
reasons.
Previously these methods would inconsistently handle the
edit buffer, eg uniqueValues would consider changed attributes
but not added features. Now uniqueValues, minimumValue and
maximumValue all consider both added features and changed
attribute values when performing their calculation.
The most noticable effect of this fix is that the unique
values widget now correctly shows values for features which
have been added but not yet committed to the provider.
* Make closestSegment() behave as expected by QgsGeometry::closestSegmentWithContext
This fixes a bug that QgsPointLocator::nearestEdge() would return valid match even for point layers.
* Shortcut if using QgsPointLocator with a wrong layer type
