This allows users to set a timer interval in layer properties
for individual layers. These layers will be automatically refreshed
at a matching interval.
Canvas updates are deferred in order to avoid refreshing multiple
times if more than one layer has an auto update interval set.
Additionally, logic has been added to skip any auto redraws of
the canvas while the canvas is already being redrawn. This avoids
issues caused by setting a layer auto refresh to a shorter time than
is required to redraw the canvas.
By calling QgsMapLayer::triggerRepaint( true ) any cached
version of the layer will be invalidated, but a map canvas
refresh won't automatically be triggered
This allows invalidation of cached images while deferring
the actual map update until the next canvas refresh.
Motivations:
- consistency - we generally use expanded names, and this also
matches Qt API which uses Database instead of Db
- avoids unpredictable capitalization throughout API (mix of "Db"
and "DB")
In some cases the render result for a layer may depend on more than
one layer.
This changes QgsMapRendererCache to use "cache keys" instead of layer ids
to identify images within the cache. When setting an image inside the
cache, a new list parameter is used to specify all layers on which
that image depends.
QgsMapRendererJob and subclasses are not designed to be subclassed
outside of core QGIS code. Marking them private API allows us to
change them after API is frozen again.
The basic idea is to split reading of XML definition and resolution of layer IDs into layers.
Also includes some cleanups in QgsProject and improvements in QgsVectorLayerJoinInfo.
Faster than QgsGeometry::isGeosEmpty() because it avoids the
conversion to GEOS geometries and just uses the QgsAbstractGeometry
subclasses directly.
Also implements faster isEmpty() overrides for specific
QgsAbstractGeometry subclasses.
This commit implements a new QgsAnnotationManager class, which
handles storage, writing and retrieval of annotations.
QgsProject has an annotationManager() attached to it. Map canvases
sync their visible QgsMapCanvasAnnotationItems to the annotations
contained within the project's annotation manager.
This moves all management, storage and retrieval of annotations
up to core and out of app/canvas.
This changes the rendering of annotation frames to use QGIS' symbology
engine, which means that all the existing fill styles can now be
used to style annotation frames.
Also paint effects & data defined symbol parameters. Whee!
