# flutter_native_image

**Repository Path**: 2722/flutter_native_image

## Basic Information

- **Project Name**: flutter_native_image
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-03-28
- **Last Updated**: 2021-03-28

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# flutter_native_image
[![pub package](https://img.shields.io/pub/v/flutter_native_image.svg?label=flutter_native_image&color=blue)](https://pub.dartlang.org/packages/flutter_native_image)

Native Flutter Image tools

This plugin aims to have native tools to resize images and reduce their quality by compression. The code is somewhat hacky (especially the iOS part), but it works for my needs and hasn't crashed on me. Feel free to improve it if you want to.

Right now there are a few functions. Please find some examples below.

## Usage

### Install

Add the following lines to your pubspec.yaml under dependencies

```yaml
flutter_native_image: ^0.0.5
```

### Compress an image
```dart
File compressedFile = await FlutterNativeImage.compressImage(file.path,
    quality: quality, percentage: percentage);
```

You have to give it a file from the file system and optionally provide a quality (1-100) and a resizing percentage (1-100).
Each platform will use it's proper tools to handle the resizing.

To resize the image to the certain size, use following code:
```dart
ImageProperties properties = await FlutterNativeImage.getImageProperties(file.path);
File compressedFile = await FlutterNativeImage.compressImage(file.path, quality: 80, 
    targetWidth: 600, targetHeight: 300);
```
Keep aspect ratio of the file:
```dart
ImageProperties properties = await FlutterNativeImage.getImageProperties(file.path);
File compressedFile = await FlutterNativeImage.compressImage(file.path, quality: 80, 
    targetWidth: 600, 
    targetHeight: (properties.height * 600 / properties.width).round());
```

### Get image properties
```dart
ImageProperties properties = await FlutterNativeImage.getImageProperties(file.path);
```

It returns an ImageProperties object containing the width and the height of the image.

### Crop an image
```dart
File croppedFile = await FlutterNativeImage.cropImage(file.path, originX, originY, width, height);
```

Returns a file containing the image cropped with the given dimensions.

### Contributions
[Alexis Leblond (a-leblond)](https://github.com/a-leblond) the image properties feature.

[Eugene Strokin](https://github.com/strokine) the resize to target height/width feature

[![](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/images/0)](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/links/0)[![](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/images/1)](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/links/1)[![](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/images/2)](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/links/2)[![](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/images/3)](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/links/3)[![](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/images/4)](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/links/4)[![](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/images/5)](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/links/5)[![](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/images/6)](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/links/6)[![](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/images/7)](https://sourcerer.io/fame/btastic/btastic/flutter_native_image/links/7)

### Credits
Shoutouts to Trevor from Vocaro.com. He had the fitting algorithm for resizing images in Objective-C.

Source: http://vocaro.com/trevor/blog/2009/10/12/resize-a-uiimage-the-right-way/

For preserving exif information, I took the code from googles image_picker github (https://github.com/flutter/plugins/tree/master/packages/image_picker)