Utility to get the visible boundary.

CHANGELOG.md

@@ -1,3 +1,7 @@
+## [1.4.1]
+
+* Utility to get the visible boundary.
+
 ## [1.4.0]
 
 * Support Dart SDK 3.0.0.

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020-2022 Mahdi K. Fard
+Copyright (c) 2020-2023 Mahdi K. Fard
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

analysis_options.yaml

@@ -1,12 +1,9 @@
 include: package:flutter_lints/flutter.yaml
 analyzer:
  exclude:
- - 'lib/**/generated/**'
+ - "lib/**/generated/**"
  language:
  strict-raw-types: false
- strong-mode:
- implicit-casts: true
- implicit-dynamic: false
  errors:
  always_declare_return_types: error
  always_specify_types: error

example/lib/main.dart

@@ -7,6 +7,7 @@ import 'package:example/pages/metro_lines_page.dart';
 import 'package:example/pages/raster_map_page.dart';
 import 'package:example/pages/vector_map_page.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
 
 void main() => runApp(const MapApp());
 
@@ -17,6 +18,11 @@ class MapApp extends StatelessWidget {
  Widget build(BuildContext context) {
  return MaterialApp(
  title: 'Map Examples',
+ supportedLocales: const [Locale('en')],
+ localizationsDelegates: const [
+ GlobalWidgetsLocalizations.delegate,
+ GlobalMaterialLocalizations.delegate,
+ ],
  theme: ThemeData(
  colorSchemeSeed: Colors.purple,
  useMaterial3: true,

example/lib/pages/custom_tile_page.dart

@@ -64,6 +64,10 @@ class CustomTilePageState extends State<CustomTilePage> {
  body: MapLayout(
  controller: controller,
  builder: (context, transformer) {
+ final boundary = transformer.getBoundary();
+ final boundaryText =
+ 'TopLeft: (${boundary.topLeft.latitude}, ${boundary.topLeft.longitude})\nBottomRight: (${boundary.bottomRight.latitude}, ${boundary.bottomRight.longitude})';
+
  return GestureDetector(
  behavior: HitTestBehavior.opaque,
  onDoubleTapDown: (details) => _onDoubleTap(
@@ -100,6 +104,7 @@ class CustomTilePageState extends State<CustomTilePage> {
  );
  },
  ),
+ Positioned(bottom: 16, right: 16, child: Text(boundaryText)),
  ],
  ),
  ),

example/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -5,7 +5,7 @@
 import FlutterMacOS
 import Foundation
 
-import path_provider_macos
+import path_provider_foundation
 import sqflite
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {

example/pubspec.yaml

@@ -22,6 +22,8 @@ dependencies:
  sdk: flutter
  latlng: any
  cached_network_image: ^3.2.0
+ flutter_localizations:
+ sdk: flutter
  platform: ^3.1.0
  map:
  path: ../

lib/map.dart

@@ -18,11 +18,16 @@
 /// * This package supports **caching** out of the box through [cached_network_image](https://pub.dev/packages/cached_network_image) and [flutter_cache_manager](https://pub.dev/packages/flutter_cache_manager) packages.
 library map;
 
-export 'src/map.dart';
-export 'src/layout_builder.dart';
-export 'src/map_layout.dart';
-export 'src/transformer.dart' show MapTransformer;
-export 'src/controller.dart';
-export 'src/polyline.dart';
-export 'src/layers/tile_layer.dart';
-export 'src/layers/polyline_layer.dart';
+import 'dart:math';
+
+import 'package:latlng/latlng.dart';
+import 'package:flutter/widgets.dart';
+
+part 'src/map.dart';
+part 'src/layout_builder.dart';
+part 'src/map_layout.dart';
+part 'src/transformer.dart';
+part 'src/controller.dart';
+part 'src/polyline.dart';
+part 'src/layers/tile_layer.dart';
+part 'src/layers/polyline_layer.dart';

lib/src/controller.dart

@@ -1,5 +1,4 @@
-import 'package:flutter/widgets.dart';
-import 'package:latlng/latlng.dart';
+part of map;
 
 /// A controller to modify the [center] and [zoom] of the [MapLayout].
 class MapController extends ChangeNotifier {

lib/src/layers/polyline_layer.dart

@@ -1,9 +1,4 @@
-import 'dart:math';
-
-import 'package:flutter/widgets.dart';
-import 'package:map/src/polyline.dart';
-import 'package:map/src/transformer.dart';
-import 'package:map/src/map_layout.dart';
+part of map;
 
 /// Draws a layer of polylines on the [MapLayout].
 class PolylineLayer extends StatelessWidget {

lib/src/layers/tile_layer.dart

@@ -1,10 +1,4 @@
-import 'dart:math';
-
-import 'package:flutter/widgets.dart';
-import 'package:latlng/latlng.dart';
-import 'package:map/src/controller.dart';
-import 'package:map/src/layout_builder.dart';
-import 'package:map/src/map_layout.dart';
+part of map;
 
 /// Raster or Vector data for a specific [z, x, y] coordinate.
 ///

lib/src/layout_builder.dart

@@ -1,6 +1,4 @@
-import 'package:flutter/widgets.dart';
-import 'package:map/src/controller.dart';
-import 'package:map/src/transformer.dart';
+part of map;
 
 /// Builds a widget tree that can depend on the parent widget's size and
 /// providers a map coordinates transfom helper to its children.
@@ -18,7 +16,7 @@ class MapLayoutBuilder extends InheritedWidget {
  key: key,
  child: LayoutBuilder(
  builder: (BuildContext context, BoxConstraints constraints) {
- final transformer = createMapTransformer(
+ final transformer = MapTransformer._internal(
  controller: controller,
  constraints: constraints,
  tileSize: tileSize,

lib/src/map.dart

@@ -1,8 +1,4 @@
-import 'dart:math';
-
-import 'package:flutter/material.dart';
-import 'package:latlng/latlng.dart';
-import 'package:map/src/controller.dart';
+part of map;
 
 /// Raster or Vector data for a specific [z, x, y] coordinate.
 ///

lib/src/map_layout.dart

@@ -1,6 +1,4 @@
-import 'package:flutter/widgets.dart';
-import 'package:map/src/controller.dart';
-import 'package:map/src/transformer.dart';
+part of map;
 
 /// Builds a widget tree that can depend on the parent widget's size and
 /// providers a map coordinates transfom helper to its children.
@@ -17,7 +15,7 @@ class MapLayout extends InheritedWidget {
  key: key,
  child: LayoutBuilder(
  builder: (BuildContext context, BoxConstraints constraints) {
- final transformer = createMapTransformer(
+ final transformer = MapTransformer._internal(
  controller: controller,
  constraints: constraints,
  tileSize: tileSize,

lib/src/polyline.dart

@@ -1,6 +1,4 @@
-import 'dart:ui';
-
-import 'package:latlng/latlng.dart';
+part of map;
 
 /// Defines a polyline to draw on the map.
 class Polyline {

lib/src/transformer.dart

@@ -1,8 +1,4 @@
-import 'dart:math';
-
-import 'package:flutter/widgets.dart';
-import 'package:latlng/latlng.dart';
-import 'package:map/src/controller.dart';
+part of map;
 
 /// Helps with converting map coordinates to XY coordinates and vice-versa.
 class MapTransformer {
@@ -13,7 +9,7 @@ class MapTransformer {
  }) : _centerX = constraints.biggest.width / 2.0,
  _centerY = constraints.biggest.height / 2.0;
 
- /// Map controller which is used in [MapLayoutBuilder].
+ /// Map controller which is used in [MapLayout].
  final MapController controller;
 
  /// The size of the tiles. This is usually equal to the size of the .png file taken from the server. E.g. 256 for a 256x256 pixels or 512 for a 512x512 pixels.
@@ -103,17 +99,17 @@ class MapTransformer {
 
  return Rect.fromCenter(center: centerPixels, width: size, height: size);
  }
-}
 
-/// For internal use.
-MapTransformer createMapTransformer({
- required MapController controller,
- required BoxConstraints constraints,
- required int tileSize,
-}) {
- return MapTransformer._internal(
- controller: controller,
- constraints: constraints,
- tileSize: tileSize,
- );
+ /// Gets the current visible boundary.
+ Boundary getBoundary() {
+ final biggest = Offset(
+ constraints.biggest.width,
+ constraints.biggest.height,
+ );
+
+ final topLeft = toLatLng(Offset.zero);
+ final bottomRight = toLatLng(biggest);
+
+ return Boundary(topLeft: topLeft, bottomRight: bottomRight);
+ }
 }

pubspec.yaml

@@ -1,16 +1,16 @@
 name: map
-description: Lightweight Map widget for flutter supporting different projections including EPSG4326/Mercator/WGS1984.
-version: 1.4.0
+description: Geographical Map widget for flutter supporting different projections including EPSG4326/Mercator/WGS1984.
+version: 1.4.1
 homepage: https://pwa.ir
 repository: https://github.com/xclud/flutter_map
 
 environment:
- sdk: ">=2.12.0 <4.0.0"
+ sdk: ">=2.12.0 <3.0.0"
 
 dependencies:
  flutter:
  sdk: flutter
- latlng: ^0.2.0
+ latlng: ^0.2.1
 
 dev_dependencies:
  flutter_test: