react-container-dimensions  

Wrapper component that detects parent (container) element resize and passes new dimensions down the
tree. Based on element-resize-detector.

npm install --save react-container-dimensions

It is especially useful when you create components with dimensions that change over
time and you want to explicitely pass the container dimensions to the children. For example, SVG
visualization needs to be updated in order to fit into container.

It uses getBoundingClientRect() and passes values for all top, right, bottom, left, width, height CSs attributes down the tree.

Usage

* Wrap your existing components. Children component will recieve top, right, bottom, left, width, height as props.

``jsx



`

* Use a function to pass width or height explicitely or do some calculation. Function callback will be called with an object { width: number, height: number } as an argument and it expects the output to be a React Component or an element.

`jsx

{ ({ height }) => }

`

How is it different from [similar_component_here]

It does not create a new element in the DOM but relies on the parentNode which must be present. So, basically, it acts as a middleware to pass the dimensions of _your_ styled component to your children components. This makes it _very easy_ to integrate with your existing code base.

For example, if your parent container has display: flex, only adjacent children will be affected by this rule. This means if your children rely on flex CSS property, you can't wrap it in a div anymore since _this will break the flexbox flow_.

So this won't work anymore:

`html



`

react-container-dimensions doesn't change the resulting HTML markup, so it remains:

`html



`

Example

Let's say you want your SVG visualization to always fit into the container. In order for SVG to scale elements properly it is required that width and height attributes are properly set on the svg element. Imagine the following example

$3

It's hard to keep dimensions of the container and the SVG in sync. Especially, when you want your content to be resplonsive (or dynamic).

`jsx
export const myVis = () => (