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integration of onLongPress to flutter_map_tappable_polyline.dart #71

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integration of onLongPress to flutter_map_tappable_polyline.dart #71

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32 changes: 29 additions & 3 deletions lib/flutter_map_tappable_polyline.dart
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Original file line number Diff line number Diff line change
@@ -1,3 +1,6 @@
// Changes:
// 16.02.2024, integration of onLongPress by jpgorganizer

library flutter_map_tappable_polyline;

import 'dart:math';
Expand Down Expand Up @@ -37,12 +40,19 @@ class TappablePolylineLayer extends PolylineLayer {
/// The callback to call when a polyline was hit by the tap
final void Function(List<TaggedPolyline>, TapUpDetails tapPosition)? onTap;

/// The callback to call when a polyline was hit by longPress
final void Function(List<TaggedPolyline>, LongPressStartDetails tapPosition)? onLongPress;

/// The optional callback to call when no polyline was hit by the tap
final void Function(TapUpDetails tapPosition)? onMiss;
///
/// dynamic type is TapUpDetails || LongPressStartDetails
/// depending on event
final void Function(dynamic tapPosition)? onMiss;

TappablePolylineLayer({
this.polylines = const [],
this.onTap,
this.onLongPress,
this.onMiss,
this.pointerDistanceTolerance = 15,
polylineCulling = false,
Expand Down Expand Up @@ -95,6 +105,10 @@ class TappablePolylineLayer extends PolylineLayer {
_forwardCallToMapOptions(details, context);
_handlePolylineTap(details, onTap, onMiss);
},
onLongPressStart:(LongPressStartDetails details) {
_forwardCallToMapOptionsLongPress(details, context);
_handlePolylineTap(details, onLongPress, onMiss);
},
child: Stack(
children: [
CustomPaint(
Expand All @@ -108,7 +122,7 @@ class TappablePolylineLayer extends PolylineLayer {
}

void _handlePolylineTap(
TapUpDetails details, Function? onTap, Function? onMiss) {
/*TapUpDetails*/ details, Function? onTap, Function? onMiss) {
// We might hit close to multiple polylines. We will therefore keep a reference to these in this map.
Map<double, List<TaggedPolyline>> candidates = {};

Expand Down Expand Up @@ -174,7 +188,6 @@ class TappablePolylineLayer extends PolylineLayer {
onTap!(candidates[closestToTapKey], details);
}

void _forwardCallToMapOptions(TapUpDetails details, BuildContext context) {
final latlng = _offsetToLatLng(details.localPosition, context.size!.width,
context.size!.height, context);

Expand All @@ -187,6 +200,19 @@ class TappablePolylineLayer extends PolylineLayer {
mapOptions.onTap?.call(tapPosition, latlng);
}

void _forwardCallToMapOptionsLongPress( details, BuildContext context,) {
final latlng = _offsetToLatLng(details.localPosition, context.size!.width,
context.size!.height, context);

final mapOptions = MapOptions.of(context);

final tapPosition =
TapPosition(details.globalPosition, details.localPosition);

// Forward the onLongPress call to map.options so that we won't break onLongPress
mapOptions.onLongPress?.call(tapPosition, latlng);
}

double _distance(Offset point1, Offset point2) {
var distancex = (point1.dx - point2.dx).abs();
var distancey = (point1.dy - point2.dy).abs();
Expand Down