How do I use AlloyFinger with React?

You can wrap AlloyFinger in a React component using refs to attach it to DOM elements, but you'll need to manually handle component unmounting by calling the destroy method to avoid memory leaks.

Is AlloyFinger better than Hammer.js?

AlloyFinger is lighter and simpler, ideal for minimal overhead, while Hammer.js offers more features and broader support but with a larger bundle. Choose based on your project's size and complexity.

Can AlloyFinger handle multiple gestures at once?

Yes, it supports multi-touch gestures like pinch and rotate through events like multipointStart and multipointEnd, allowing complex interactions with multiple touch points.

How to implement pinch-to-zoom with AlloyFinger?

Use the pinch event handler, which provides evt.zoom data, and apply CSS transforms to scale the element accordingly, similar to the rotate example in the README.

Does AlloyFinger support TypeScript?

No official TypeScript definitions are provided, so you may need to create custom types or rely on community contributions, which can be inconvenient for TypeScript projects.

How to prevent gesture conflicts in AlloyFinger?

AlloyFinger doesn't have built-in conflict resolution; developers must manage event precedence manually by ordering handlers or using flags in callback functions.

Open-Awesome

alloyfinger

MITJavaScript

A super tiny multi-touch gesture library for web applications, supporting tap, swipe, pinch, rotate, and more.

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3.4k stars539 forks0 contributors

What is alloyfinger?

AlloyFinger is a super tiny multi-touch gesture library for the web that enables developers to add touch interactions like tap, swipe, pinch, and rotate to HTML elements. It solves the problem of implementing complex touch gestures with minimal code and overhead, making web applications more interactive on touch devices.

Target Audience

Frontend developers building touch-enabled web applications, especially those targeting mobile devices or tablets, and developers using the Omi framework who need integrated gesture support.

Value Proposition

Developers choose AlloyFinger for its extremely small size and comprehensive gesture support, allowing them to enhance user interactions without sacrificing performance or adding significant bundle weight.

Overview

Super tiny size multi-touch gestures library for the web. 　　　You can touch this →

Use Cases

Best For

Adding pinch-to-zoom and rotation gestures to image viewers or maps
Implementing swipe navigation in mobile web apps or galleries
Creating interactive touch-based games or drawing applications
Enhancing UI components with tap, double tap, and long press actions
Building touch-friendly data visualizations or charts
Integrating gestures into Omi framework projects via omi-finger

Not Ideal For

Projects built with React, Vue, or Angular that prefer integrated gesture libraries or hooks
Applications requiring gesture-driven animations or pre-styled UI components out-of-the-box
Websites prioritizing strict accessibility compliance where gestures need built-in keyboard fallbacks

Pros & Cons

Pros

Extremely Lightweight

AlloyFinger is designed with a tiny footprint to minimize page load impact, aligning with its philosophy of performance and minimalism.

Comprehensive Gesture Set

Supports a wide range of touch gestures like pinch, rotate, swipe, and tap, covering most interactive needs for touch-enabled web apps.

Flexible Event Management

Provides on and off methods for dynamic event handling and a destroy method to clean up listeners, preventing memory leaks as shown in the usage examples.

Omi Framework Integration

Includes an omi-finger version for seamless use with the Omi framework, simplifying gesture implementation in Omi-based projects.

Cons

Limited Framework Support

Only integrates natively with Omi; for other frameworks like React or Vue, developers must manually handle binding and lifecycle management.

Basic Documentation

The README lacks detailed guides, API references, or examples for edge cases, making advanced usage more challenging to implement.

No Built-in Visuals

Gesture detection is provided, but developers must separately implement animations or visual feedback, adding to development complexity.

Frequently Asked Questions

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