Fix density/pixelratio

[tobrun]

When running the project, it's noticable that labels are oversized:

[tobrun]

When debugging I'm noticing a difference between width/height with flutter vs gl-native

• w: 360 vs 1440.0
• h: 612 vs 2448.0

If those values are used for h/w on flutter, the map is renders but the gestures do no correspond correctly

[seddonm1]

Was this comment before or after your mapbox/mapbox-gl-native#11772 change?

Currently code will not compile as it is dependent on that change being implemented upstream.

FYI for anyone testing until that upstream change gets released just change:

    nativeMapView = new NativeMapView(context, 1, this, mapRenderer);
to:
    nativeMapView = new NativeMapView(context, this, mapRenderer);

[seddonm1]

#17

do you think mapbox/mapbox-gl-native#11772 can be included into 6.1.0-snapshot?

[tobrun]

Currently code will not compile as it is dependent on that change being implemented upstream.

You need to get a fresh copy of the SNAPSHOT dependency, you can do a gradle command as cleanBuildCache to do that.

do you think mapbox/mapbox-gl-native#11772 can be included into 6.1.0-snapshot?

once a PR is merged to a release branch, we automatically build a new snapshot.

[seddonm1]

No worries. Ill quickly fix my PR

[tobrun]

Finally got to the bottom of this: Flutter exposes 2 coordinate systems called local and global. You can convert between the two using box.globalToLocal and box.localToGlobal. These coordinate systems do not match what we expect on the map side (same input as on android), to support this we need to convert local to the expected pixel output using the device pixel ratio. This is needed when the map is created and when we receive inputs from the flutter framework (eg. gesture input). Due to limited flutter knowledge I'm going to punt on this for now, map renders at correct resolution and gestures work as expected.