dynamic_image_crop

Package Overview

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Dynamic Image Crop is a Flutter package that enables users to crop images by drawing custom lines or selecting various shapes. It provides an interactive interface for precise image cropping, supporting dynamic adjustments in real time. Ideal for apps requiring flexible image editing, it works across multiple platforms including Android, iOS, macOS, Windows, and Linux. The package is designed for developers seeking intuitive, customizable cropping functionality without complex setup.

Use cases

Interactive image editing
Custom shape cropping
Real-time crop adjustments
Photo editing apps
User-generated content tools
Social media image processing

Key features

Draw custom crop boundaries
Support for multiple shapes
Real-time preview
Cross-platform compatibility
Simple integration with Flutter
Configurable crop constraints

Suitable for

Developers building photo editors
Apps needing user-defined image crops
Creative tools with visual editing
Mobile and desktop image processing apps
Educational or design-focused applications

Considerations

Requires user input for crop definition
May impact performance with large images
Limited to basic cropping logic
No built-in image filters or enhancements
Depends on accurate touch/drag gestures
Not optimized for batch processing

Original README

Original README snapshot from the linked source repository. Visit the repository for the latest content.

A Flutter package to crop images into various shapes.

Introduction

You can test the package by this link: demo_link

Features

dynamic_image_crop supports the following features:

Crop an image into user drawing shapes.
Crop an image into rectangle, circle, triangle shapes.
Change the color of the crop shape line.
Change the width of the crop shape line.

Usage

import 'package:dynamic_image_crop/dynamic_image_crop.dart';

final controller = CropController();

DynamicImageCrop(
  controller: controller,
  image: image!,  // Uint8List
  onResult: (image, width, height) {
    // cropped Image (Uint8List), width and height
  },
  cropLineColor: Colors.red, // (Optional)
  cropLineWidth: 1.0, // (Optional)
)

DynamicImageCrop.fromFile(
  imageFile: file,  // File
  controller: controller,
  onResult: (image, width, height) {
    // cropped Image (Uint8List), width and height
  },
)

CropController has the following methods:

void cropImage() {}
void changeType(CropType type) {}
void changeImage(Uint8List image) {}
void clearCropArea() {}

CropType has the following types:

enum CropType {
  rectangle, circle, triangle, drawing, none
}

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