responsive_media 1.1.3

A responsive utility for Flutter to simplify scaling text, padding, and layout.

📱 Responsive Media

ResponsiveMedia is a Flutter utility designed to create responsive UIs that adapt seamlessly to different screen sizes and orientations. It provides a centralized and intuitive way to scale typography, spacings, paddings, margins, and widgets. With ResponsiveMedia, you can ensure consistent designs across mobile, tablet, and web platforms.

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✨ Features

• 🖥 Cross-Device Compatibility: Works seamlessly across all devices, including phones, tablets, and web, in both portrait and landscape modes.
• 🧮 Auto-Scaling: Dynamically calculates typography, spacings, and other UI elements based on the shortest screen side.
• 🔧 Intuitive Extensions: Use shorthand extensions like 0.02.rh, 0.05.rw, and 0.04.rs to define dimensions relative to screen height, width, or shortest side.
• 🛠 Predefined Typography & Spacings: Built-in responsive sizes for typography (h1, h2, etc.) and consistent spacings with gapS(), gapM(), etc.
• 🎛 Customizable Scaling: Fine-tune scaling globally using an optional scale factor.
• 🏗 Central Initialization: Initialize once with .init(context) and access features globally.

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🚀 Installation

To add ResponsiveMedia to your project, follow these steps:

1. Add the Dependency

Add the package to your pubspec.yaml file:

dependencies:
  responsive_media: ^1.1.3

2. Fetch the Package

Run the following command to install the package:

flutter pub get

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🔧 Basic Usage

This section explains the basic setup and usage of ResponsiveMedia.

Step 1: Import the Package

Import ResponsiveMedia in your Dart file:

import 'package:responsive_media/responsive_media.dart';

Step 2: Initialize ResponsiveMedia

Initialize ResponsiveMedia inside the build method of your root widget or wrap your MaterialApp with a custom builder:

@override
Widget build(BuildContext context) {
  ResponsiveMedia.init(context); // Initialize here
  return MaterialApp(
    home: MyHomePage(),
  );
}

⚠️ Important: Initialization must happen before using any ResponsiveMedia properties. If not initialized, it will throw an error.

Step 3: Access ResponsiveMedia Anywhere

Once initialized, you can access ResponsiveMedia globally using ResponsiveMedia.instance.

Example:

final rm = ResponsiveMedia.instance;

Padding(
  padding: rm.defaultPadding, // Responsive padding
  child: Text(
    "Welcome!",
    style: TextStyle(
      fontSize: rm.h1, // Responsive size
    ),
  ),
);

ElevatedButton(
  onPressed: () {},
  child: Text(
    "Click Here",
    style: TextStyle(
      fontSize: rm.buttonText, // Responsive button text
    ),
  ),
);

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📏 Using shortestSide for Responsive Widget Sizing

The shortestSide value allows you to build responsive layouts that scale proportionally on both portrait and landscape screens, including tablets and foldable devices.

✨ Why Use shortestSide?

• 📱 Works great for portrait and landscape orientations.
• 🧠 Ensures consistent spacing and sizing across various screen dimensions.
• 📐 Especially useful for widgets like Container, SizedBox, Padding, Margins, etc.

Example:

Container(
  height: rm.shortestSide * 0.2, // 20% of shortest screen dimension
  width: rm.screenWidth,         // Full screen width
  child: RichText(
    text: TextSpan(
      text: "Login Account \n",
      style: TextStyle(
        fontWeight: FontWeight.bold,
        fontSize: rm.h1 * 1.5, // Scaled responsive headline
        color: Colors.black,
      ),
      children: [
        TextSpan(
          text: "Please login into your account",
          style: TextStyle(
            fontSize: rm.h2, // Base responsive subtitle
            color: Colors.grey,
          ),
        ),
      ],
    ),
  ),
);

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🖋 Responsive Typography

ResponsiveMedia provides pre-defined typography styles that scale dynamically based on the screen size. These styles ensure consistent font sizes on all devices.

Typography Levels

Level	Typical Use Case
h1	Page titles or major headlines
h2	Section headers
h3	Subsection headers or prominent subtitles
h4	Smaller section labels or content headers
h5	Supporting information or medium emphasis
h6	Least prominent headings or field hints
title	Featured titles, cards, or callouts
subtitle	Descriptive text below titles
body	Standard content text or paragraphs
caption	Secondary labels, annotations, or image tags
button	Text inside buttons or interactive elements
overline	Uppercase labels above headings or cards

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📐 Typography Sizes and Breakpoints

Typography Sizes (Responsive Scaling)

This table defines the responsive typography scaling used across different screen sizes (XS to XL). Adjustments are made based on the screen's shortest side to ensure optimal readability and design consistency.

Style	XS	S	M	L	XL
h1	20	22	24	26	28
h2	18	20	22	24	26
h3	16	18	20	22	24
h4	15	16	18	20	22
h5	14	15	16	18	20
h6	13	14	15	16	18
title	26	30	33	37	41
subtitle	22	26	30	33	37
body	18	22	26	30	33
caption	15	18	22	26	30
buttonText	13	14	15	16	17
overline	13	17	20	24	28

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📱 Breakpoints

Breakpoint	Screen Width (shortest side)
XS	< 320
S	>= 320 and < 480
M	>= 480 and < 720
L	>= 720 and < 1080
XL	>= 1080

✅ Examples of Typography Use

Here are some common examples of how to use responsive typography in your app:

final rm = ResponsiveMedia.instance;

// Example 1: Large Headline (h1)
Text(
  'Welcome to Flutter!',
  style: TextStyle(
    fontSize: rm.h1,
    fontWeight: FontWeight.bold,
  ),
);

// Example 2: Section Title (h2)
Text(
  'Features',
  style: TextStyle(
    fontSize: rm.h2,
    fontWeight: FontWeight.w600,
  ),
);

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🧩 Spacing and Layout

Predefined Spacing Widgets

ResponsiveMedia provides pre-defined spacing widgets like gapS(), gapM(), and gapL() to maintain consistent spacing between UI elements.

Example:

final rm = ResponsiveMedia.instance;

Column(
  children: [
    // Using rm.h1 for responsive font size for the heading
    Text(
      'Step 1',
      style: TextStyle(
        fontSize: rm.h1, // Responsive font size for a large heading
        fontWeight: FontWeight.bold,
      ),
    ),

    // Using rm.gapS() for a small gap to maintain consistent spacing
    rm.gapS(), // Adds a small responsive gap between widgets

    // Using rm.h2 for a smaller heading size
    Text(
      'Enter your details',
      style: TextStyle(
        fontSize: rm.h2, // Responsive font size for a smaller heading
        fontWeight: FontWeight.bold,
      ),
    ),

    // Using rm.gapM() for a medium gap to visually separate sections
    rm.gapM(), // Adds a medium responsive gap

    // Using rm.h2 for consistent styling of headings
    Text(
      'Step 2',
      style: TextStyle(
        fontSize: rm.h2, // Responsive font size for another smaller heading
        fontWeight: FontWeight.bold,
      ),
    ),
  ],
);

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Extensions for Height, Width, and Shortest Side

Custom extensions (.rh, .rw, and .rs and .rl) simplify dimension calculations for height, width, and shortest and longest.

Responsive Height (rh)

Container(
  height: 0.3.rh, // 30% of the screen height
  color: Colors.blue,
);

Responsive Width (rw)

Container(
  width: 0.8.rw, // 80% of the screen width
  color: Colors.green,
);

Responsive Shortest Side (rs)

Container(
  padding: EdgeInsets.all(0.02.rs), // 2% of the shortest side
  child: Text('Responsive Container'),
);

Responsive Logest Side (rl)

Container(
  padding: EdgeInsets.all(0.02.rl), // 2% of the logest side
  child: Text('Responsive Container'),
);

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🛠 API Summary

Typography

Getter	Description
h1	Large heading
h2	Medium heading
h3	Smaller heading
h4	Label or subtitle
body	Paragraph text
caption	Small captions
button	Button text
overline	Overline text for emphasis

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Spacing and Gaps

Property	Description
gap()	Provides a custom gap with configurable height and width.
gapXS()	Extra-small predefined gap for minimal spacing.
gapS()	Small predefined gap for moderate spacing.
gapM()	Medium predefined gap for typical spacing needs.
gapL()	Large predefined gap for wider spacing.
gapXL()	Extra-large predefined gap for maximum spacing.
defaultPadding	Uniform padding applied consistently across widgets.
spacingXS	Extra-small spacing value for dense layouts.
spacingXL	Extra-large spacing value for spacious layouts.

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Sizing

Extension	Description
0.2.rh	20% of the screen height
0.1.rw	10% of the screen width
0.03.rs	3% of the shortest screen side
0.03.rl	3% of the longest screen side

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🔍 Comparison with flutter_screenutil

Feature	ResponsiveMedia	flutter_screenutil
Requires Context?	✅ Yes	✅ Yes
Uses Shortest Side?	✅ Yes	❌ No
Predefined TextStyles?	✅ Yes	❌ No
Orientation Support	✅ Yes	⚠️ Manual
Lightweight	✅ Zero dependencies	⚠️ Heavier

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🏗 Planned Features

🚧 Version 1.3.0 (Coming Soon)

• ResponsiveMediaBuilder: A widget for automatic context injection.
• Advanced Breakpoints: Helpers such as isMobile, isTablet, isDesktop.
• Theme-Aware Styles: Support for light and dark mode text styles.

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Happy coding with ResponsiveMedia! 🎉