merge_images in flutter

Intro

Merge images (Image stitching) in vertical or horizontal direction.

Features

Support vertical and horizontal direction.
Provide a helper to merge images in code and get a result image, and a widget to automatically merge and show images.
Automatically scale the image to fit other images (fit width in vertical, and height in horizontal).

Usage

ImagesMergeHelper

Use this helper to merge images in code.

ui.Image image = await ImagesMergeHelper.margeImages(
[assetImage1,assetImage2,providerImage],///required,images list
   fit: true,///scale image to fit others
   direction: Axis.vertical,///direction of images
   backgroundColor: Colors.black26);///background color

Besides, it provider some functions to do image format conversion:

///ui.Image to Uint8List
Uint8List bytes = await ImagesMergeHelper.imageToUint8List(image);
///ui.Image to File
File file = await ImagesMergeHelper.imageToFile(image);
///Uint8List to ui.Image
ui.Image image = await ImagesMergeHelper.uint8ListToImage(imageBytes);
///file to ui.Image
ui.Image image = await ImagesMergeHelper.loadImageFromFile(file);
///asset to ui.Image
ui.Image image = await ImagesMergeHelper.loadImageFromAsset(assetPath);
///ImageProvider to ui.Image
ui.Image image = await ImagesMergeHelper.loadImageFromProvider(imageProvider);

ImageMerge

Use this widget to automatically merge and show images.

ImagesMerge(
  imageList,///required,images list
  direction: Axis.vertical,///direction
  backgroundColor: Colors.black26,///background color
  fit: false,///scale image to fit others
  controller: captureController,///controller to get screen shot
),

Besides, the widget was wrapped with RepaintBoundary, you can simply passing an instance of CaptureController and get the screen shot by calling capture().

///get capture of widget by RepaintBoundary
 getCapture() async{
  Uint8List bytes = await captureController.capture();
  }

LICENSE

MIT License