Security News
Research
Data Theft Repackaged: A Case Study in Malicious Wrapper Packages on npm
The Socket Research Team breaks down a malicious wrapper package that uses obfuscation to harvest credentials and exfiltrate sensitive data.
@react-native-masked-view/masked-view
Advanced tools
@react-native-masked-view/masked-view is a React Native component that allows you to create masked views. This means you can define a mask that determines which parts of a child view are visible, enabling you to create complex visual effects.
Basic Masked View
This example demonstrates a basic masked view where the text 'Masked Text' acts as the mask. The blue background is only visible through the text.
import React from 'react';
import { View, Text } from 'react-native';
import MaskedView from '@react-native-masked-view/masked-view';
const BasicMaskedView = () => (
<MaskedView
style={{ flex: 1 }}
maskElement={
<View
style={{
backgroundColor: 'transparent',
justifyContent: 'center',
alignItems: 'center',
}}
>
<Text
style={{
fontSize: 60,
color: 'black',
fontWeight: 'bold',
}}
>
Masked Text
</Text>
</View>
}
>
<View style={{ flex: 1, backgroundColor: 'blue' }} />
</MaskedView>
);
export default BasicMaskedView;
Gradient Mask
This example shows how to use a gradient as a mask. The red background is gradually revealed through the gradient mask.
import React from 'react';
import { View, Text } from 'react-native';
import MaskedView from '@react-native-masked-view/masked-view';
import LinearGradient from 'react-native-linear-gradient';
const GradientMaskedView = () => (
<MaskedView
style={{ flex: 1 }}
maskElement={
<LinearGradient
colors={['transparent', 'black']}
style={{ flex: 1 }}
/>
}
>
<View style={{ flex: 1, backgroundColor: 'red' }} />
</MaskedView>
);
export default GradientMaskedView;
react-native-svg provides SVG support to React Native. It allows you to create complex shapes and masks using SVG elements. Compared to @react-native-masked-view/masked-view, react-native-svg offers more flexibility and control over vector graphics but may require more effort to achieve similar masking effects.
react-native-linear-gradient allows you to create linear gradients in your React Native applications. While it doesn't provide masking capabilities directly, it can be used in conjunction with @react-native-masked-view/masked-view to create gradient masks. It is more specialized in creating gradient backgrounds and overlays.
MaskedView
Provides a React component that renders a masked view.
yarn add @react-native-masked-view/masked-view
or
npm install --save @react-native-masked-view/masked-view
Linking the package manually is not required anymore with Autolinking.
Remember to install the pod with:
npx pod-install
You then need to link the native parts of the library for the platforms you are using. The easiest way to link the library is using the CLI tool by running this command from the root of your project:
react-native link @react-native-masked-view/masked-view
Import the MaskedView
component from @react-native-masked-view/masked-view
and use it like so:
import React from 'react';
import { Text, View } from 'react-native';
import MaskedView from '@react-native-masked-view/masked-view';
const App = () => {
return (
<MaskedView
style={{ flex: 1, flexDirection: 'row', height: '100%' }}
maskElement={
<View
style={{
// Transparent background because mask is based off alpha channel.
backgroundColor: 'transparent',
flex: 1,
justifyContent: 'center',
alignItems: 'center',
}}
>
<Text
style={{
fontSize: 60,
color: 'black',
fontWeight: 'bold',
}}
>
Basic Mask
</Text>
</View>
}
>
{/* Shows behind the mask, you can put anything here, such as an image */}
<View style={{ flex: 1, height: '100%', backgroundColor: '#324376' }} />
<View style={{ flex: 1, height: '100%', backgroundColor: '#F5DD90' }} />
<View style={{ flex: 1, height: '100%', backgroundColor: '#F76C5E' }} />
<View style={{ flex: 1, height: '100%', backgroundColor: '#e1e1e1' }} />
</MaskedView>
);
}
export default App
The following image demonstrates that you can put almost anything behind the mask. The three examples shown are masked <View>
, <Text>
, and <Image>
.
maskElement
Type | Required |
---|---|
element | Yes |
androidRenderingMode
By default hardware
rendering mode will be used for best performance, however if you need to animate your maskElement
then you’ll need to switch to software
to get your mask to update. This prop only affects Android.
Type | Required | Default |
---|---|---|
software , hardware | No | hardware |
FAQs
React Native MaskedView component
We found that @react-native-masked-view/masked-view demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
Research
The Socket Research Team breaks down a malicious wrapper package that uses obfuscation to harvest credentials and exfiltrate sensitive data.
Research
Security News
Attackers used a malicious npm package typosquatting a popular ESLint plugin to steal sensitive data, execute commands, and exploit developer systems.
Security News
The Ultralytics' PyPI Package was compromised four times in one weekend through GitHub Actions cache poisoning and failure to rotate previously compromised API tokens.