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Description:

marker icon

overview #
A package to convert Widget, Local image, Netwok image, Svg file to BitmapDescriptor which can use in google_maps_flutter icon marker.

Get started #
Add dependency #
dependencies:
marker_icon: ^0.7.1
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Add rounded marker icon with border from network image: #
onPressed: () async {
markers.add(
Marker(
icon: await MarkerIcon.downloadResizePictureCircle(
'https://thegpscoordinates.net/photos/la/tehran_iran_5u679ezi8f.jpg',
size: 150,
addBorder: true,
borderColor: Colors.white,
borderSize: 15),
),
);
}
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Notes: #
1. You have to add your marker in async function. #
2. All other functions work the same above except widget to marker. #
Widget To Marker #
MyMap class hold your googleMap widget: #

class MyMap extends StatefulWidget {
const WidgetToMarker({Key? key}) : super(key: key);
@override
_WidgetToMarkerState createState() => _WidgetToMarkerState();
}
class _WidgetToMarkerState extends State<WidgetToMarker> {

Set<Marker> _markers = <Marker>{};

// declare a global key
final GlobalKey globalKey = GlobalKey();

@override
Widget build(BuildContext context) {
return Stack(
children: [
Scaffold(
body: Stack(
children: [

// you have to add your widget in the same widget tree
// add your google map in stack
// declare your marker before google map
// pass your global key to your widget

MyMarker(globalKey),

Positioned.fill(
child: GoogleMap(
initialCameraPosition: CameraPosition(
target: LatLng(32.4279, 53.6880), zoom: 15),
markers: _markers,
),
),
],
),
floatingActionButton: FloatingActionButton.extended(
label: FittedBox(child: Text('Add Markers')),
onPressed: () async {

// call widgetToIcon Function and pass the same global key

_markers.add(
Marker(
markerId: MarkerId('circleCanvasWithText'),
icon: await MarkerIcon.widgetToIcon(globalKey),
position: LatLng(35.8400, 50.9391),
),
);
setState(() {});
},
),
floatingActionButtonLocation:
FloatingActionButtonLocation.centerFloat,
),
],
);
}
}

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MyMarker class hold your widget that you want convert it to marker icon: #

class MyMarker extends StatelessWidget {
// declare a global key and get it trough Constructor

MyMarker(this.globalKeyMyWidget);
final GlobalKey globalKeyMyWidget;

@override
Widget build(BuildContext context) {
// wrap your widget with RepaintBoundary and
// pass your global key to RepaintBoundary
return RepaintBoundary(
key: globalKeyMyWidget,
child: Stack(
alignment: Alignment.center,
children: [
Container(
width: 250,
height: 180,
decoration:
BoxDecoration(color: Colors.black, shape: BoxShape.circle),
),
Container(
width: 220,
height: 150,
decoration:
BoxDecoration(color: Colors.amber, shape: BoxShape.circle),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(
Icons.accessibility,
color: Colors.white,
size: 35,
),
Text(
'Widget',
style: TextStyle(color: Colors.white, fontSize: 25),
),
],
)),
],
),
);
}
}

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Now we have a marker from our custom widget #

Functions: #

widgetToMarker : an icon marker from your custom widget.
svgAsset : a svg icon marker from your asset folder.
pictureAsset : a picture(png,jpeg,etc...) icon marker from your asset folder.
pictureAssetWithCenterText : a picture(png,jpeg,etc...) icon marker from your asset folder With Center text.
circleCanvasWithText : a circle canvas with center text.
downloadResizePicture : a picture(png,jpeg,etc...) icon marker from internet.
downloadResizePictureCircle : a rounded picture(png,jpeg,etc...) icon marker with border from internet.