extensions.dart
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import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter/foundation.dart';
extension ContextExtensionss on BuildContext {
/// The same of [MediaQuery.of(context).size]
Size get mediaQuerySize => MediaQuery.of(this).size;
/// The same of [MediaQuery.of(context).size.height]
/// Note: updates when you rezise your screen (like on a browser or desktop window)
double get height => mediaQuerySize.height;
/// The same of [MediaQuery.of(context).size.width]
/// Note: updates when you rezise your screen (like on a browser or desktop window)
double get width => mediaQuerySize.width;
/// Gives you the power to get a portion of the height.
/// Useful for responsive applications.
///
/// [dividedBy] is for when you want to have a portion of the value you would get
/// like for example: if you want a value that represents a third of the screen
/// you can set it to 3, and you will get a third of the height
///
/// [reducedBy] is a percentage value of how much of the height you want
/// if you for example want 46% of the height, then you reduce it by 56%.
double heightTransformer({double dividedBy = 1, double reducedBy = 0.0}) {
return (mediaQuerySize.height -
((mediaQuerySize.height / 100) * reducedBy)) /
dividedBy;
}
/// Gives you the power to get a portion of the width.
/// Useful for responsive applications.
///
/// [dividedBy] is for when you want to have a portion of the value you would get
/// like for example: if you want a value that represents a third of the screen
/// you can set it to 3, and you will get a third of the width
///
/// [reducedBy] is a percentage value of how much of the width you want
/// if you for example want 46% of the width, then you reduce it by 56%.
double widthTransformer({double dividedBy = 1, double reducedBy = 0.0}) {
return (mediaQuerySize.width - ((mediaQuerySize.width / 100) * reducedBy)) /
dividedBy;
}
/// Divide the height proportionally by the given value
double ratio({
double dividedBy = 1,
double reducedByW = 0.0,
double reducedByH = 0.0,
}) {
return heightTransformer(dividedBy: dividedBy, reducedBy: reducedByH) /
widthTransformer(dividedBy: dividedBy, reducedBy: reducedByW);
}
/// similar to [MediaQuery.of(context).padding]
ThemeData get theme => Theme.of(this);
/// similar to [MediaQuery.of(context).padding]
TextTheme get textTheme => Theme.of(this).textTheme;
/// similar to [MediaQuery.of(context).padding]
EdgeInsets get mediaQueryPadding => MediaQuery.of(this).padding;
/// similar to [MediaQuery.of(context).padding]
MediaQueryData get mediaQuery => MediaQuery.of(this);
/// similar to [MediaQuery.of(context).viewPadding]
EdgeInsets get mediaQueryViewPadding => MediaQuery.of(this).viewPadding;
/// similar to [MediaQuery.of(context).viewInsets]
EdgeInsets get mediaQueryViewInsets => MediaQuery.of(this).viewInsets;
/// similar to [MediaQuery.of(context).orientation]
Orientation get orientation => MediaQuery.of(this).orientation;
/// check if device is on landscape mode
bool get isLandscape => orientation == Orientation.landscape;
/// check if device is on portrait mode
bool get isPortrait => orientation == Orientation.portrait;
/// similar to [MediaQuery.of(this).devicePixelRatio]
double get devicePixelRatio => MediaQuery.of(this).devicePixelRatio;
/// similar to [MediaQuery.of(this).textScaleFactor]
double get textScaleFactor => MediaQuery.of(this).textScaleFactor;
/// get the shortestSide from screen
double get mediaQueryShortestSide => mediaQuerySize.shortestSide;
/// True if width be larger than 800
bool get showNavbar => (width > 800);
/// True if the shortestSide is smaller than 600p
bool get isPhone => (mediaQueryShortestSide < 600);
/// True if the shortestSide is largest than 600p
bool get isSmallTablet => (mediaQueryShortestSide >= 600);
/// True if the shortestSide is largest than 720p
bool get isLargeTablet => (mediaQueryShortestSide >= 720);
/// True if the current device is Tablet
bool get isTablet => isSmallTablet || isLargeTablet;
/// Returns a specific value according to the screen size
/// if the device width is higher than or equal to 1200 return [desktop] value.
/// if the device width is higher than or equal to 600 and less than 1200
/// return [tablet] value.
/// if the device width is less than 300 return [watch] value.
/// in other cases return [mobile] value.
T responsiveValue<T>({
T mobile,
T tablet,
T desktop,
T watch,
}) {
double deviceWidth = mediaQuerySize.shortestSide;
if (kIsWeb) {
deviceWidth = mediaQuerySize.width;
}
if (deviceWidth >= 1200 && desktop != null) return desktop;
if (deviceWidth >= 600 && tablet != null) return tablet;
if (deviceWidth < 300 && watch != null) return watch;
return mobile;
}
}