go_responsive_generator 0.3.4

A code generator for go_responsive which generate useful widget, classe and build_context extension methods.

GoResponsive

A simple but expressive responsive framework inspired by responsive_framework conitinal logics and context based responsive data & responsive_builder responsive widget with all supported breakpoint as parameters which will genrated by code generation.

Features

GoResponsive makes responsive design easy by:

• Generate GoResponsiveWidget with all defined breakpoint as optional parameters with and a required defaultWidget parameter.
• Generate context.goResponsiveValue<T> extension method on BuildContext so can be used set typed value.
• Generate context.is{breakpoint_name} extension methods on BuildContext so can be used with condition.
• Generate GoResponsiveBreakpoints.{breakpoint_name} string fields for breakpoint names.

Getting started

Package	Version
go_responsive
go_responsive_annotation
go_responsive_generator

dependencies:
  ...
  go_responsive: <version>
  go_responsive_annotation: <version>

dev_dependencies:
  ...
  build_runner: <version>
  go_responsive_generator: <version>

Uasage

• Define go_responsive.dart:

  import 'package:flutter/widgets.dart';
  import 'package:go_responsive/go_responsive.dart';
  import 'package:go_responsive_annotation/go_responsive_annotation.dart';
  
  part 'go_responsive.g.dart';
  
  @goResponsive
  const breakpoints = [
    GoResponsiveBreakpoint(size: 600, name: 'compact'),
    GoResponsiveBreakpoint(size: 840, name: 'medium'),
    GoResponsiveBreakpoint(size: double.maxFinite, name: 'expanded'),
  ];
  

• return GoResponsiveBuilder from MaterialApp builder function and set breakpoint to already defined breakpoints list from go_responsive.dart:

  class App extends StatelessWidget {
    const App({super.key});
  
    @override
    Widget build(BuildContext context) {
      return MaterialApp(
        home: const Home(),
        builder: (context, child) {
          return GoResponsiveBuilder(
            breakpoints: breakpoints,
            child: child,
          );
        },
      );
    }
  }
  

• now run dart run build_runner build in console which will generate go_responsive.g.dart

• then import go_responsive.dart can be use context.goResponsiveValue:

  class Home extends StatelessWidget {
    const Home({super.key});
  
    @override
    Widget build(BuildContext context) {
      return Scaffold(
        body: Container(
          color: context.goResponsiveValue(
            compact: Colors.red,
            medium: Colors.green,
            expanded: Colors.blue,
            defaultValue: Colors.black,
          ),
        ),
      );
    }
  }
  

• use or GoResponsiveWidget

  class Home2 extends StatelessWidget {
    const Home2({super.key});
  
    @override
    Widget build(BuildContext context) {
      return Scaffold(
        body: GoResponsiveWidget(
          compact: Container(color: Colors.red),
          medium: Container(color: Colors.green),
          expanded: Container(color: Colors.blue),
          defaultWidget: Container(color: Colors.black),
        ),
      );
    }
  }
  

• or use context.is{breakpoint_name} with if else

  class Home3 extends StatelessWidget {
    const Home3({super.key});
  
    @override
    Widget build(BuildContext context) {
      var color = Colors.black;
  
      if (context.isCompact) {
        color = Colors.red;
      }
  
      if (context.isMedium) {
        color = Colors.green;
      }
  
      if (context.isExpanded) {
        color = Colors.blue;
      }
  
      return Scaffold(
        body: Container(color: color),
      );
    }
  }
  

• or use context.goResponsiveData and GoResponsiveBreakpoints.{breakpoint_name} combination for custom conditions

  class Home4 extends StatelessWidget {
    const Home4({super.key});
  
    @override
    Widget build(BuildContext context) {
      var color = Colors.black;
  
      if (context.goResponsiveData
          .smallerOrEqualTo(GoResponsiveBreakpoints.compact)) {
        color = Colors.red;
      }
  
      if (context.goResponsiveData.between(
        GoResponsiveBreakpoints.compact,
        GoResponsiveBreakpoints.expanded,
      )) {
        color = Colors.green;
      }
  
      if (context.goResponsiveData.between(
        GoResponsiveBreakpoints.medium,
        GoResponsiveBreakpoints.expanded,
      )) {
        color = Colors.blue;
      }
  
      return Scaffold(
        body: Container(color: color),
      );
    }
  }
  

Conditions

• equals
• between
• largerThan
• smmallerThan
• largerOrEqualTo
• smallerOrEqualTo

Tips

• Add **/**/.g.dart in .gitgonre to ignore all generated dart files

My other packages

Time Picker Wheel Time Picker inspired by Oppo Clock app set alram time screen with full customization

Contributors