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immich/mobile/lib/utils/flutter_map_extensions.dart
shalong-tanwen cb391342d7
feat(mobile): map view (#3661)
* feat(mobile): map page - add map view

* map: add map-markers

* feat(map): add relative date filter

* fix: do not let users scroll past map bounds

* fix: fetch relative date from store to state on init

* feat(mobile):re-fetch markers only on filter change

* feat(mobile) - asset bottom sheet in map page

* feat(mobile): display markers based on bottom sheet scroll

* fix: exif-bottom-sheet - rebase conflict

* feat(mobile): map-view - strongly typed map page events

* feat(map): zoom to asset

* chore: dart analyzer fixes

* map-page move attribution to top-right

* feat(mobile): map view - asset selection handling

* feat(mobile): map-view display map in places row

* fix: make asset marker icon responsive

* optimise map page rebuilds

* refactor(mobile): map page

* feat(mobile): map-view: Go to location

* map-view(mobile): minor refactor

* fix(mobile): Handle invalid coords gracefully

* small styling

---------

Co-authored-by: Alex Tran <alex.tran1502@gmail.com>
2023-08-27 05:07:35 +00:00

68 lines
1.6 KiB
Dart

import 'package:flutter/material.dart';
import 'package:flutter_map/flutter_map.dart';
import 'package:latlong2/latlong.dart';
import 'dart:math' as math;
extension MoveByBounds on MapController {
// TODO: Remove this in favor of built-in method when upgrading flutter_map to 5.0.0
LatLng? centerBoundsWithPadding(
LatLng coordinates,
Offset offset, {
double? zoomLevel,
}) {
const crs = Epsg3857();
final oldCenterPt = crs.latLngToPoint(coordinates, zoomLevel ?? zoom);
final mapCenterPoint = _rotatePoint(
oldCenterPt,
oldCenterPt - CustomPoint(offset.dx, offset.dy),
);
return crs.pointToLatLng(mapCenterPoint, zoomLevel ?? zoom);
}
CustomPoint<double> _rotatePoint(
CustomPoint<double> mapCenter,
CustomPoint<double> point, {
bool counterRotation = true,
}) {
final counterRotationFactor = counterRotation ? -1 : 1;
final m = Matrix4.identity()
..translate(mapCenter.x, mapCenter.y)
..rotateZ(degToRadian(rotation) * counterRotationFactor)
..translate(-mapCenter.x, -mapCenter.y);
final tp = MatrixUtils.transformPoint(m, Offset(point.x, point.y));
return CustomPoint(tp.dx, tp.dy);
}
double getTapThresholdForZoomLevel() {
const scale = [
25000000,
15000000,
8000000,
4000000,
2000000,
1000000,
500000,
250000,
100000,
50000,
25000,
15000,
8000,
4000,
2000,
1000,
500,
250,
100,
50,
25,
10,
5,
];
return scale[math.max(0, math.min(20, zoom.round() + 2))].toDouble() / 6;
}
}