API.md

Components

The project currently supports 5 different placeholder components.

Each of this components are wrapped in a HOC that brings two others (optional) props :

• animate: String: An optional animation available in the src/animations folder (see also Animations
• onReady: any: A value. If it's different from null / undefined / empty string / 0, the component children are rendered. This props creates the loading feeling and the component apparition when content is loaded.
• customAnimate: React.Component: A custom animation represented by a React.Component

Navigate the API documentation :

• Line
• Media
• Paragraph
• Image content
• Box
• Custom components

Line

Display a simple line on the screen.

Props available

• textSize: String: Text size of the Line
• color: String: Color of the line
• width: String: Width of the line, percentage available

Example

<Placeholder.Line
  color="#ffff00"
  width="77%"
/>

Media

Display a shape that represent a media placeholder

Props available

• size: Number: The size of the media shape (default: 40)
• hasRadius: Boolean: Is the shape rounded or not ? (default: false)
• color: String: Color of the media shape (default: #efefef)

Example

<Placeholder.Media
  size={70}
  color="#0000ff"
  hasRadius
/>

Paragraph

Display a set of lines called a Paragraph

Props available

• lineNumber: Number: Number of line to display (mandatory)
• textSize: Number: Text size of a single Line (default: 12)
• lineSpacing: Number: Space between the lines (default: 12)
• color: String: Color of the lines (default: #efefef)
• width: String: Width of the lines (default: 100%)
• lastLineWidth: String: Custom width of the last line (default: 100%)
• firstLineWidth: String: Custom width of the first line (default: 100%)

Example

<Placeholder.Paragraph
  lineNumber={3}
  textSize={16}
  lineSpacing={5}
  color="#ff0000"
  width="100%"
  lastLineWidth="70%"
  firstLineWidth="50%"
/>

Image content

Display a Media on the left / right part of a Paragraph

Props available

• position: String: The position of the Media (left / right) (default: left)
• hasRadius: Boolean: Is the shape of the media rounded or not ? (default: false)
• size: Number: Size of the media (default: 40)
• lineNumber: Number: Number of line to display (mandatory)
• textSize: Number: Text size of a single Line (default: 12)
• lineSpacing: Number: Space between the lines (default: 12)
• color: String: Color of the lines (default: #efefef)
• width: String: Width of the lines (default: 100%)
• lastLineWidth: String: Custom width of the last line (default: 100%)
• firstLineWidth: String: Custom width of the first line (default: 100%)

Example

<Placeholder.ImageContent
  position="right"
  hasRadius
  lineNumber={5}
  textSize={14}
  lineSpacing={5}
  color="#00ff00"
  width="100%"
  lastLineWidth="30%"
  firstLineWidth="10%"
/>

Box

Display a generic rectangle shape with customisable width, height, color and border radius

Props available

• height: Number | String: the height of the component (default: 50)
• width: Number | String: the width of the component (default: 50)
• radius: Number: the border radius of the component (default: 0)
• color: String: the background color of the component (default: #efefef)

Example

<Placeholder.Box
  height={50}
  width="100%"
  radius={5}
  color="teal"
/>

Custom components

You can create your own placeholder component based on your own ones. Based on that, we're exposing a Placeholder.connect function that returns a new ComponentContainer.

This container allows you to use the onReady props that will automatically display the placeholder children when its value is true. It also gives you access to the animate props that works just as described before, and so, you can take advent from the prebuilt animations of this project.

Taken from the Example/customPlaceholder.js :

import React from 'react';
import { Text } from 'react-native';
import Placeholder from 'rn-placeholder';

const customPlaceholder = (props) => {
  const style = { backgroundColor: props.bgColor };
  return <Text style={style}>I m a custom loader with props bgColor = {props.bgColor}</Text>;
};

export default Placeholder.connect(customPlaceholder);