(Apologies in advance for spamming the list!) Given the recent decision by the PSC to have developers announce work they are doing to avoid overlap or clashes, here's the first of my current work announcements:
Please see https://github.com/qgis/QGIS/pull/2857 and https://github.com/qgis/QGIS-Enhancement-Proposals/issues/38 regarding work which is underway in reworking how QGIS handles data defined properties. This work intends to deprecate the existing QgsDataDefined class (+all the multiply duplicated code for handling collections of data defined objects) in a more structured, flexible and powerful manner. Benefits will include: - setting the framework for inheritable property collections (eg live layout templates, labeling presets). - much simpler code for handling data defined properties (current code has many issues, is very complex, not many tests) - upgrades QgsScaleExpression and adds an easy interface for creating other assistants like the current size assistant (the PR includes the framework (no GUI yet) for a "color assistant" which interpolates colors from a ramp). - sets a framework where parts of time manager can be ported to core (eg, an "animate property" assistant) Please touch base with me if you have any work planned involving QgsDataDefined, QgsScaleExpression, QgsDataDefinedAssistant, diagrams in the near future. I'm hoping to land this for 2.16, and start by introducing it to diagrams. API break will be required to port it to labeling, symbology and composer so that will be deferred to 3.0. Nyall _______________________________________________ Qgis-developer mailing list [email protected] List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer
