rect_getter 0.0.1

rect_getter #

A widget provide a simple way to get child's rectangle information after rendered.

Usage #

To use this plugin, add rect_getter as a dependency in your pubspec.yaml file.

Example #

// Import package
import 'package:rect_getter/rect_getter.dart';

// Instantiate it

var globalKey = RectGetter.createGlobalKey();
var rectGetter = new RectGetter(
    key: globalKey,
    child: _child,


var rectGetter = new RectGetter.defaultKey(
    child: _child,

// and add it to your layout .

// then you can get rect by

Rect rect = rectGetter.getRect();


Rect rect = RectGetter.getRectFromKey(globalKey);

Getting Started #

For help getting started with Flutter, view our online documentation.

For help on editing package code, view the documentation.

[0.0.1] - TODO: Add release date.

  • TODO: Describe initial release.


import 'dart:async';

import 'package:flutter/material.dart';
import 'dart:math' show Random;

import 'package:rect_getter/rect_getter.dart';

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Flutter Demo',
      theme: new ThemeData(
      home: new MyHomePage(title: 'Flutter Demo Home Page'),

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  _MyHomePageState createState() => new _MyHomePageState();

class _MyHomePageState extends State<MyHomePage> {
  Random random = new Random();

  var _counter = 21;

  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text(widget.title),
      body: new GridView.builder(
        gridDelegate: new SliverGridDelegateWithFixedCrossAxisCount(
          crossAxisCount: 3,
        itemCount: _counter,
        itemBuilder: (BuildContext context, int index) {
          if (index == _counter - 1) {
            new Timer(, () {
              setState(() {
                _counter += 21;

          var globalKey = RectGetter.createGlobalKey();
          return new FittedBox(
            child: new RectGetter(
              key: globalKey,
              child: new GestureDetector(
                onTap: () {
                  var rect = RectGetter.getRectFromKey(globalKey);
                  Scaffold.of(context).showSnackBar(new SnackBar(content: new Text('$index : ${rect.toString()}')));
                child: new Container(
                  color: Colors.primaries[index % Colors.primaries.length],
                  width: random.nextInt(100) + 100.0,
                  height: random.nextInt(150) + 150.0,
                  child: new Center(
                    child: new Text('$index'),

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  rect_getter: ^0.0.1

2. Install it

You can install packages from the command line:

with Flutter:

$ flutter pub get

Alternatively, your editor might support flutter pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:rect_getter/rect_getter.dart';
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Learn more about scoring.

We analyzed this package on Feb 13, 2020, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.7.1
  • pana: 0.13.5
  • Flutter: 1.12.13+hotfix.7

Health suggestions

Format lib/rect_getter.dart.

Run flutter format to format lib/rect_getter.dart.

Maintenance suggestions

Package is getting outdated. (-72.88 points)

The package was last published 90 weeks ago.

Package is pre-v0.1 release. (-10 points)

While nothing is inherently wrong with versions of 0.0.*, it might mean that the author is still experimenting with the general direction of the API.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0-dev.28.0 <3.0.0
flutter 0.0.0
Transitive dependencies
collection 1.14.11 1.14.12
meta 1.1.8
sky_engine 0.0.99
typed_data 1.1.6
vector_math 2.0.8
Dev dependencies