Interactive Viewer Plus

A powerful extension of Flutter's InteractiveViewer with advanced programmatic controls. It adds support for rotation, flipping, and precise panning, all manageable via an enhanced controller.

Features

Interactive Viewer Plus brings the InteractiveViewer to the next level with:

• 🔄 Programmatic Rotation: Effortlessly rotate your content by any angle.
• ↔️ Flipping Support: Easily flip your content horizontally (X-axis) or vertically (Y-axis).
• 🎯 Precise Panning: Move the viewport to specific offsets programmatically.
• 🎮 Enhanced Controller: InteractiveViewerPlusController provides more methods than the standard TransformationController.
• ⌨️ Keyboard Shortcut Ready: Built with external triggers in mind, perfect for desktop or tool-heavy apps.
• 🚀 Drop-in Replacement: Works just like the standard widget but with extra "plus" features.

Getting started

Add the dependency to your pubspec.yaml:

dependencies:
  interactive_viewer_plus: ^0.0.4

Usage

Using InteractiveViewerPlus is straightforward. Just replace your InteractiveViewer and use the InteractiveViewerPlusController for advanced control.

import 'package:interactive_viewer_plus/interactive_viewer_plus.dart';

// 1. Initialize the controller
final controller = InteractiveViewerPlusController();

// 2. Use the widget
InteractiveViewerPlus(
  controller: controller,
  minScale: 0.1,
  maxScale: 5.0,
  child: Image.network('https://example.com/large-image.jpg'),
)

// 3. Control it programmatically
controller.zoom(1.2);          // Zoom in 20%
controller.rotate(math.pi / 4); // Rotate 45 degrees
controller.flip(flipX: true);   // Flip horizontally
controller.pan(Offset(10, 0));  // Pan 10 pixels right

Full Programmatic Control

Method	Description
zoom(double factor)	Scales the view relative to the current scale.
rotate(double radians)	Rotates the view by the given amount.
flip({bool flipX, bool flipY})	Flips the view on the specified axes.
pan(Offset offset)	Translates the view by the given offset.

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