On 12 May 2017 at 07:34, Luigi Pirelli <[email protected]> wrote: > FYI in freeCAD list > > https://forum.freecadweb.org/viewtopic.php?t=22390
This is quite encouraging to read. I'd love to see stronger links between our projects. I suspect there's a lot we can share - even if it's just sharing all the custom widgets both projects have had to develop/refine! On this note, we spoke at the Australian hackfest about how we can make QGIS play nicer with other projects. We've got the issue right now that QgsApplication is a QApplication, so it's currently impossible to import the qgis libraries into another Qt project without creating this forced Q(gs)Application. This should change - so we came up with the idea of splitting up the current QgsApplication class, into: - QgsCore. A singleton (yep!) containing all the various other "single instance members" which are currently attached to QgsApplication. E.g. task manager, provider registries, etc. This approach was recently taken with the construction of a QgsGui singleton containing global GUI members. - Move all the various path handling code out to their own class. - Create a QApplication in main, instead of creating a QgsApplication. Standalone scripts would need to do the same - construct their own Q(Core/Gui)Application, just like standalone PyQt scripts require. - Kill the need to manually call initQgis, by handling this automatically when the qgis python libraries are imported. Benefits would be: - much easier use of qgis python libraries in standalone scripts (especially with Nathan's great work in https://github.com/qgis/QGIS/commit/df679a2). On Windows this would then be as simple as: setup python path correctly - import qgis.core - done. - QGIS libraries can be used safely with any other Qt based code which handles its own Q(Core/Gui)Application creation. Of course... this was just planning ahead... I don't think anyone's actively working on this yet ;) Nyall _______________________________________________ QGIS-Developer mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
