flutter pub add pinch_zoom根據套件公開資料產生的選型評估，僅供參考。
PinchZoom 是一個 Flutter 套件，透過 Flutter 的 InteractiveViewer 實現直觀的捏合縮放功能。它允許使用者使用觸控手勢縮放和拖曳影像，並在手勢結束時自動將影像恢復至原始大小與位置。此套件設計簡潔，跨平台表現流暢，可無縫整合至影像檢視介面。它支援所有主要平台，包含 Android、iOS、Web、macOS、Windows 與 Linux，非常適合需要互動式影像探索的跨平台應用。
以下為關聯原始碼儲存庫的 README 原文快照，最新內容請造訪原始碼儲存庫。
A widget based on Flutter's Interactive Viewer that makes picture pinch zoom, and return to its initial size and position when released.
This package offers Instagram based pinch zooming that feels more responsive than other similar packages.
The package is designed for zooming in on images; however, it can also be used to zoom in on a video.
Add this to your pubspec.yaml dependencies:
pinch_zoom: ^2.0.1
Add the widget to your app like this (It automatically takes the size of the image you pass to it):
PinchZoom(
child: Image.network('https://placecats.com/640/360'),
maxScale: 2.5,
onZoomStart: (){print('Start zooming');},
onZoomEnd: (){print('Stop zooming');},
),