React native css calc

How to calc() height in react native for styling

There is a grey square which positions the 4 small squares
There is a black square which there will be 4 small squares in each side’s center of the black square.
For normal web, I can do it by calculation of the width
But how should I do it in react native which calc(100% – 20) is not working there

Please check the code in codepen: Codepen

.container < display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100vh; width: 100vw; >.invisiblesquare < position: relative; height: 20%; width:20%; border: 1px solid grey; display: flex; flex-direction: column; align-items: center; justify-content: center; >.bigsquare < position: absolute; width: calc(100% - 22px); height: calc(100% - 22px); border: 1px solid black; >.col1 < height: 20px >.col2 < height: calc(100% - 22px); width: 100%; display: flex; flex-direction: row; align-items: center; justify-content: space-between; >.col3 < height: 20px >.smallsquare

Solution – 1

You can get screen Dimension using,

import from 'react-native'; const screenWidth = Dimensions.get('window').width; const screenHeight = Dimensions.get('window').height; 

Then you can do your calculations as below,

Solution – 2

useWindowDimensions automatically updates width and height values when screen size changes. You can get your application window’s width and height like so:

import from 'react-native'; const windowWidth = useWindowDimensions().width; const windowHeight = useWindowDimensions().height; 

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[feature] Research adding support for CSS calc() #9

[feature] Research adding support for CSS calc() #9

Comments

Like CSS media queries and CSS viewport units, calc() values needs to be calculated at runtime because the values can be dynamic (percentages, viewport units).

One of the tricky things with calc() is that you can use percentages with it for width and height, e.g. calc(50% — 2px) . That means that in order to support percentages, we need to know the width or height of the element that is using the value.

Getting width/height for an element at runtime in React Native seems possible, so it just needs a proof of concept to see if it actually works together with the style property:
http://matthewsessions.com/2017/06/27/react-native-on-layout.html

The text was updated successfully, but these errors were encountered:

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React Native Calc Width? The 18 Correct Answer

Are you looking for an answer to the topic “react native calc width“? We answer all your questions at the website barkmanoil.com in category: Newly updated financial and investment news for you. You will find the answer right below.

How do you give 100% width in React Native?

How do I get the screen width in React Native?

You can get the application window’s width and height using the following code: const windowWidth = Dimensions. get(‘window’).

Responsive Layout Design and fonts. React Native Size Matters.#52

Images related to the topicResponsive Layout Design and fonts. React Native Size Matters.#52

How do I change the device width in React Native?

You can use React Native Pixel Ratio to get the actual pixel size of the screen. import < Dimensions, PixelRatio >from ‘react-native’; You can use object destructuring to create width and height globals or put it in stylesheets as others suggest, but beware this won’t update on device reorientation.

How do you set dynamic height and width in React Native?

In react-native, to set the dynamic width and height to a component, we use built-in interface Dimensions. it takes the dimension of a given component and then sets the width and height to its equivalent.

How do I set the width and height of an image in React Native?

To set image width to be 100% and height to be auto in React Native, we can set the width and height of the Image . to call Dimensions. get with ‘window’ to get the window’s dimension. Then we calculate the ratio between the width and height of the image with win.

How do I find the device height and width in React Native?

1. Import Dimensions. import < Dimensions>from ‘react-native’
2. To Get the Height of the Device. Dimensions. get(‘window’).height.
3. To Get the Width of the Device. Dimensions. get(‘window’).width.

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React native css calc

Last updated: Jan 17, 2023
Reading time · 2 min

# Using the calc() function in inline styles in React

To use the calc() function in React:

1. Set the style prop on the element
2. Pass the result of calling calc() as the value for a CSS property.
3. The call to calc() should be wrapped in a string.

Copied! 
const App = () =>  const navbarHeight = '200px'; const footerHeight = '100px'; return ( div style= minHeight: `calc(100vh - $navbarHeight> - $footerHeight>)`, >> > h2>Hello worldh2> div style=width: 'calc(100% - 600px)'>>> h2>Some content hereh2> div> div> ); >; export default App; 

We set the style prop on the div in order to use inline styles.

The first example uses a template literal to interpolate variables in the call to the calc() function.

Copied! 
div style= minHeight: `calc(100vh - $navbarHeight> - $footerHeight>)`, >> > . div> 

The expressions in the dollar sign curly braces $<> syntax will get replaced with the actual values of the navbarHeight and footerHeight variables.

Note that template literals are wrapped in backticks «, not single quotes.

The second example uses the calc() function to calculate the width of an element.

Copied! 
div style=width: 'calc(100% - 600px)'>>> h2>Some content hereh2> div> 

Note that the minus (or plus) sign has to have spaces on both sides.

The call to the calc() function has to be wrapped in a string.

# Additional Resources

You can learn more about the related topics by checking out the following tutorials:

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