React Native Reanimated Zoomable 🌟

This Pure TypeScript component offers optimized performance and full customization capabilities, allowing for zooming and dragging functionalities for its child components. 🚀 It seamlessly operates on both Android and iOS platforms. 📱

Features ✨

• Optimized Performance: Built with performance in mind to ensure smooth zooming and dragging even with complex UI components.
• Full Customization: Highly customizable to fit your application's specific requirements.
• Cross-Platform Compatibility: Works flawlessly on both Android and iOS platforms.
• Responsive: Provides a responsive user experience, adapting to various screen sizes and orientations.
• Programmatic Control: Offers methods to programmatically control the zooming and dragging behavior of the view.

Installation 📦

npm install react-native-reanimated-zoomable

yarn add react-native-reanimated-zoomable

Preview 🦋

• When shouldCenterAfterThreshold is true and disableOvershooting is true

• When shouldCenterAfterThreshold is false and disableOvershooting is false

Requirements 📚

Name	version
react-native-reanimated	>= 2.0.0

Interfaces and Types 🛠️

• ZoomableRef: An interface defining the methods available on the ref for controlling the zoomable view.
• ZoomableProps: A set of props that can be passed to the Zoomable component. 📝

Ref 🔍

react-native-reanimated-zoomable exposes a ref that allows you to programmatically control the zooming and dragging behavior of the view.

Methods 🛠️

setValues(values: { scale?: number, translate?: { x: number, y: number } }): void

Sets the scale and translation values of the view.

• scale: (Optional) New scale value for the view.
• translate: (Optional) New translation values (x, y) for the view. 🖼️

Usage 🚀

import React, { createRef } from "react";
import { Button, Image, View } from "react-native";
import { Zoomable, ZoomableRef } from "react-native-reanimated-zoomable";

const zoomableRef = createRef<ZoomableRef>();
const INITIAL_ZOOM = 1; // Initial zoom scale value

export const setToInitialZoomableSetup = () => {
  zoomableRef.current?.setValues({ scale: INITIAL_ZOOM, translate: { x: 0, y: 0 } });
};

const App = () => {
  const handleResetZoom = () => {
    setToInitialZoomableSetup();
  };

  return (
    <View style={{ flex: 1, padding: 10 }}>
      <Zoomable
        ref={zoomableRef}
        style={{ flex: 1, justifyContent: "center", alignItems: "center" }}
        disablePanResponderReleaseAction={false}
        threshold={300}
        shouldCenterAfterThreshold
        disableOvershooting
        initialScale={INITIAL_ZOOM}
        maxScale={4}
      >
        <Image
          source={{ uri: "https://picsum.photos/id/2/1000/1000" }}
          style={{ height: 400, width: 400 }}
        />
      </Zoomable>
      <Button title="Reset Zoom" onPress={handleResetZoom} />
    </View>
  );
};

export default App;

Props 🎨

Name	Description	Type	Default Value
ref	A reference to the Zoomable component instance. This reference allows you to programmatically control the zooming and dragging behavior of the view. Using this reference, you can call methods such as setValues() to update the scale and translation of the view dynamically.	React.Ref<ZoomableRef>	{ }
style	Style object for the container view.	ViewStyle	{ }
initialScale	Initial scale value for the view.	number	1
maxScale	Maximum allowed scale for the view.	number	initialScale * 2
disablePanResponderReleaseAction	The disablePanResponderReleaseAction prop determines whether certain actions should be taken when the user releases a panning gesture.	boolean	false
threshold	The threshold here represents a numeric value that defines a limit for how far the user can pan the view before triggering a specific action. Threshold functionality won't be active if disablePanResponderReleaseAction is set to true. If shouldCenterAfterThreshold is set to false (default) and a user attempts to pan the view beyond the specified threshold, it will spring back to the threshold position. However, if shouldCenterAfterThreshold is set to true, the view will instead center itself.	number	300
shouldCenterAfterThreshold	The shouldCenterAfterThreshold prop determines whether the view should automatically center itself after the user exceeds the specified threshold while panning.	boolean	false
disableOvershooting	The disableOvershooting prop controls whether the view should exhibit an overshooting effect when the user releases a panning gesture. When disableOvershooting is set to true, the view will not display any overshooting animation after the user releases a panning gesture. This means that the view will come to an immediate stop at the exact point where the user lifts their finger or releases the gesture.	boolean	false
disabled	The disabled prop is used to control whether the zooming and panning functionality of a component is enabled or disabled.	boolean	false

Troubleshooting ⚒️

Multiple Versions of Reanimated Were Detected

Problem:

This error usually occurs when you have installed different versions of Reanimated in your project.

Solution:

Modify your package.json file to ensure only one version of Reanimated is used:

• For Yarn: Add the resolutions property.

"resolutions": {
  "react-native-reanimated": "<Reanimated version>"
}

• For npm: Add the overrides property.

"overrides": {
  "react-native-reanimated": "<Reanimated version>"
}

After updating your package.json, make sure to run your package manager again:

• Yarn:

yarn install

• npm:

npm install

Contributions 🤝

Contributions are welcome! If you have any suggestions, feature requests, or bug reports, feel free to open an issue or submit a pull request. Let's make this component even better together! 😃

License

MIT

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Made with create-react-native-library