display_metrics 0.1.0

Flutter plugin that provides display metrics such as real screen resolution, physical display size, ppi, diagonal. Also it contains BuildContext extension to transform inches & cm into Flutter logical pixels.

display_metrics

Flutter plugin that provides display metrics such as real screen resolution, physical display size, ppi, diagonal. Also it contains BuildContext extension to transform inches & centimeters into Flutter logical pixels.

*Does not work on iOS versions below 13

Features

• Get real screen resolution, display size (inches) and PPI
• Convert inches and centimeters into Flutter logical pixels

Install

In the pubspec.yaml of your flutter project, add the following dependency:

dependencies:
  display_metrics: ^0.1.0

In your library add the following import:

import 'package:display_metrics/display_metrics.dart';

Getting started

class ExampleApp extends StatelessWidget {
  const ExampleApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData.light(
        useMaterial3: true,
      ),
      // add DisplayMetricsWidget to Widget tree under MaterialApp to use
      // DisplayMetrics.of(context) and BuildContext extension methods
      home: DisplayMetricsWidget(
        child: Scaffold(
          appBar: AppBar(
            title: const Text('Display metrics example app'),
            centerTitle: true,
          ),
          body: const BodyWidget(),
        ),
      ),
    );
  }
}

Usage

DisplayMetricsData

To access DisplayMetricsData you can call

final metrics = DisplayMetrics.maybeOf(context);
// or
final metrics = DisplayMetrics.of(context);

// Device's screen physical size in inches
metrics.physicalSize => Size

// Device's screen resolution in real pixels
metrics.resolution => Size

// Device's screen diagonal in inches
metrics.diagonal => double

// Device's screen pixels per inch (PPI)
metrics.ppi => double 

// The number of logical pixels on the device's screen
// that corresponds to one inch
metrics.inchesToLogicalPixelRatio => double 

// MediaQuery`s devicePixelRatio;
metrics.devicePixelRatio => double 

Convert units

To convert inches and centimeters into Flutter logical pixels and vice versa you can call one of BuildCOntext extension methods:

  /// Converts inches to Flutter logical pixels
  context.inchesToPixels(double inches);

  /// Converts centimeters to Flutter logical pixels
  context.cmToPixels(double cm);

  /// Converts Flutter logical pixels into inches
  context.pixelsToInches(int pixels);

  /// Converts Flutter logical pixels into centimeters
  context.double pixelsToCm(int pixels);