Pinchable ScrollRect
Extends Unity's ScrollRect to support pinch-to-zoom gestures on touch devices and mouse scroll input. Features customizable zoom behavior, inherited ScrollRect functionality, and IPinch interface support for advanced touch customization. Seamlessly replaces standard ScrollRect components with minimal setup required.
com.lokosolo.pinchable-scrollrect 
Install via UPM
Add to Unity Package Manager using this URL
https://www.pkglnk.dev/pinchable-scrollrect.git README Markdown
Copy this to your project's README.md
Style
Preview 
## Installation
Add **Pinchable ScrollRect** to your Unity project via Package Manager:
1. Open **Window > Package Manager**
2. Click **+** > **Add package from git URL**
3. Enter:
```
https://www.pkglnk.dev/pinchable-scrollrect.git
```
[](https://www.pkglnk.dev/pkg/pinchable-scrollrect)Dependencies (1)
README
Pinchable ScrollRect for Unity
Pinchable ScrollRect allows users to zoom in and out on the ScrollRect with both touches pinching input or mouse scroll input.
Features
- Customizable pinching behaviour with inherited Unity ScrollRect behaviour.
- Overridden OnScroll behaviour for mouse scroll to perform zooming behaviour.
- Customized pinching gesture to perform the same zooming behaviour as mouse scroll input for touches.
- Transformed standard Unity Event IPointerUp & IPointerDown interface into IPinch interface for further customization of touch behaviour
Getting Started
- Use it same as the way you use the Unity ScrollRect component.
- Add a UI/ScrollView from the GameObject Menu
- Select the ScrollRect added, click on the context dropdown menu
- Select "Replace as Pinchable"
Important Remarks
- PinchInputDetector component must have a higher execution order than PinchableScrollRect component or any IPinchHandler component in order to consume the original OnDrag pointer event beforehand.
- Without PinchInputDetector, the ScrollRect can still perform zooming with mouse scroll input but not touch input.
- The absolute minimum scale of the Content of the ScrollRect is 1. A customizable lower bound and upper bound of the scale can be set on inspector.
- Any third touches detected after pinching will be ignore, even after both pinching touches are lifted.
- Editor script is needed in order to serialize the extra fields added to the PinchableScrollRect component.
License
This plugin is licensed under the MIT License - see the LICENSE file for details.
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