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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| part of mapbox_gl; | ||
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| abstract class _AnnotationManager<T extends Annotation> { | ||
| final MapboxMapController controller; | ||
| final void Function(T)? onTap; | ||
| final _idToAnnotation = <String, T>{}; | ||
| final id; | ||
| LatLng? _dragOrigin; | ||
| LayerProperties get properties; | ||
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| T? byId(String id) => _idToAnnotation[id]; | ||
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| _AnnotationManager(this.controller, {this.onTap}) : id = getRandomString(10) { | ||
| controller.addGeoJsonSource(id, buildFeatureCollection([])); | ||
| controller.addLayer(id, id, properties); | ||
| if (onTap != null) { | ||
| controller.onFeatureTapped.add(_onFeatureTapped); | ||
| } | ||
| } | ||
| _onFeatureTapped(id) { | ||
| final annotation = _idToAnnotation[id]; | ||
| if (annotation != null) { | ||
| onTap!(annotation); | ||
| } | ||
| } | ||
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| Future<void> _setAll() async { | ||
| return controller.setGeoJsonSource( | ||
| id, | ||
| buildFeatureCollection( | ||
| [for (final l in _idToAnnotation.values) l.toGeoJson()])); | ||
| } | ||
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| Future<void> addAll(Iterable<T> annotations) async { | ||
| for (var a in annotations) { | ||
| _idToAnnotation[a.id] = a; | ||
| } | ||
| await _setAll(); | ||
| } | ||
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| Future<void> add(T annotation) async { | ||
| _idToAnnotation[annotation.id] = annotation; | ||
| await _setAll(); | ||
| } | ||
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| Future<void> remove(T annotation) async { | ||
| _idToAnnotation.remove(annotation.id); | ||
| await _setAll(); | ||
| } | ||
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| Future<void> clear() async { | ||
| _idToAnnotation.clear(); | ||
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| await _setAll(); | ||
| } | ||
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| // TODO this requires a new call back | ||
| onPointerDown(String id, LatLng position) { | ||
| final annotation = byId(id); | ||
| if (annotation != null && annotation.draggable) { | ||
| if (_dragOrigin == null) { | ||
| // TODO missing from native !! | ||
| //controller.lockCamera(); | ||
| _dragOrigin = position; | ||
| } else { | ||
| final moved = annotation.translate(position - _dragOrigin!) as T; | ||
| set(moved); | ||
| } | ||
| } | ||
| } | ||
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| // TODO this requires a new call back | ||
| onPointerUp(String id, LatLng position) { | ||
| final annotation = byId(id); | ||
| if (annotation != null) { | ||
| final moved = annotation.translate(position - _dragOrigin!) as T; | ||
| set(moved); | ||
| } | ||
| _dragOrigin = null; | ||
| } | ||
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| Future<void> set(T annoation) async { | ||
| _idToAnnotation[annoation.id] = annoation; | ||
| //Todo: send only the changed line to plugin | ||
| await _setAll(); | ||
| } | ||
| } | ||
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| class LineManager extends _AnnotationManager<Line> { | ||
| LineManager(MapboxMapController controller, {void Function(Line)? onTap}) | ||
| : super(controller, onTap: onTap); | ||
| @override | ||
| LayerProperties get properties => const LineLayerProperties( | ||
| lineOpacity: [Expressions.get, 'lineOpacity'], | ||
| lineColor: [Expressions.get, 'lineColor'], | ||
| lineWidth: [Expressions.get, 'lineWidth'], | ||
| lineGapWidth: [Expressions.get, 'lineGapWidth'], | ||
| lineOffset: [Expressions.get, 'lineOffset'], | ||
| lineBlur: [Expressions.get, 'lineBlur'], | ||
| ); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| part of mapbox_gl; | ||
|
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| Map<String, dynamic> buildFeatureCollection( | ||
| List<Map<String, dynamic>> features) { | ||
| return {"type": "FeatureCollection", "features": features}; | ||
| } | ||
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| final _random = Random(); | ||
| String getRandomString([int length = 10]) { | ||
| const charSet = | ||
| 'AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz1234567890'; | ||
| return String.fromCharCodes(Iterable.generate( | ||
| length, (_) => charSet.codeUnitAt(_random.nextInt(charSet.length)))); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| part of mapbox_gl_platform_interface; | ||
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| abstract class Annotation { | ||
| String get id; | ||
| Map<String, dynamic> toGeoJson(); | ||
|
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| Annotation translate(LatLng delta); | ||
| bool get draggable; | ||
| } |
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