#28195: Make OSMWidget zoom level configurable
-------------------------------------+-------------------------------------
Reporter: Danilo | Owner: nobody
Bargen |
Type: | Status: new
Uncategorized |
Component: GIS | Version: master
Severity: Normal | Keywords: gis, osm, map, zoom
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 1
UI/UX: 0 |
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The OSMWidget has a default zoom level of 12 (as seen in
django/contrib/gis/static/gis/js/OLMapWidget.js on line 55).
{{{#!javascript
default_zoom: 12,
}}}
That zoom level is not only used as default zoom level, but also as max
zoom level for fitting the map to data:
{{{#!javascript
this.map.getView().fit(extent, this.map.getSize(), {maxZoom:
this.options.default_zoom});
}}}
This causes maps to be zoomed out considerably even when showing a pretty
small polygon with a few meters in diameter. That makes fitting the zoom
level to the data pretty useless.
Unfortunately this value is not configurable, in contrast to `default_lat`
and `default_lon`. Therefore as a first, non-controversial change I'd
suggest to make this value configurable in the OSMWidget. I'll provide a
pull request for that shortly.
Some further comments:
- The default zoom level should probably be decoupled from map zoom
fitting.
- The default zoom level is different from the one used in admin, where
it's 4: https://code.djangoproject.com/ticket/26774
--
Ticket URL: <https://code.djangoproject.com/ticket/28195>
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