Re: [Interest] qtLocation and mbtiles
> > > Thanks Ola for your reply and advise. I gave it a try and it is working > nicely (the server is in a thread of the main application as you > suggested). I used the osm plugin instead of mapbox-gl, is there any reason > why mapbox-gl would be more advantageous? > > I'm using a mix of vector and raster tiles, so I needed mapbox-gl. If you only use raster tiles then osm should be just fine! I guess it should be much easier to use as a starting point for your own plugin too. Cheers, Ola ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] qtLocation and mbtiles
Hi Thanks Ola for your reply and advise. I gave it a try and it is working nicely (the server is in a thread of the main application as you suggested). I used the osm plugin instead of mapbox-gl, is there any reason why mapbox-gl would be more advantageous? I might anyway go for the full subclassing method, because I also have security issues (some of the mbtiles contain encrypted tiles and that way it is too easy to catch them once decrypted). I should also find a way to avoid caching, etc. Thanks again Philippe Le 07-07-2018 20:31, Ola Røer Thorsen a écrit : >> I need to create a plugin for qtLocation that would use a local mbtile sql >> database instead of an online provider or a directory. The mbtiles >> management part is not an issue, I have already a class responding to tiles >> queries that I use in another widget-based application. >> >> So far my understanding is that I need to subclass >> QGeoServiceProviderFactoryV2 and all other relevant classes. Is it the >> correct approach or is there something more simple? I couldn't find any >> sample on internet, and I find the documentation very limited. >> >> Any clue welcomed to help getting me started. > > If you write a small http mbtiles server then you can use one of the > existing plugins that are bundled with Qt. I've done this using the > mapboxgl-plugin. You can run the "server" from a thread in your > application if you want. > > This might be the easiest solution for you, sounds like you have most > of it already. > > For the mapbox-gl plugin, pass it an additional style to use, then > serve this style from your server. You must also serve a "tilejson" > file. Check out tileserver-gl on github for inspiration > (node.js-based). > > Cheers, > Ola > > ___ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] qtLocation and mbtiles
> I need to create a plugin for qtLocation that would use a local mbtile sql > database instead of an online provider or a directory. The mbtiles management > part is not an issue, I have already a class responding to tiles queries that > I use in another widget-based application. > > So far my understanding is that I need to subclass > QGeoServiceProviderFactoryV2 and all other relevant classes. Is it the > correct approach or is there something more simple? I couldn't find any > sample on internet, and I find the documentation very limited. > > Any clue welcomed to help getting me started. If you write a small http mbtiles server then you can use one of the existing plugins that are bundled with Qt. I’ve done this using the mapboxgl-plugin. You can run the “server” from a thread in your application if you want. This might be the easiest solution for you, sounds like you have most of it already. For the mapbox-gl plugin, pass it an additional style to use, then serve this style from your server. You must also serve a “tilejson” file. Check out tileserver-gl on github for inspiration (node.js-based). Cheers, Ola ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] qtLocation and mbtiles
Hi all, I need to create a plugin for qtLocation that would use a local mbtile sql database instead of an online provider or a directory. The mbtiles management part is not an issue, I have already a class responding to tiles queries that I use in another widget-based application. So far my understanding is that I need to subclass QGeoServiceProviderFactoryV2 and all other relevant classes. Is it the correct approach or is there something more simple? I couldn't find any sample on internet, and I find the documentation very limited. Any clue welcomed to help getting me started. Thanks Philippe (using qt 5.11.1) ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
