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Description:

custom image crop

custom_image_crop #
An Image cropper that is customizable

CustomImageCrop #
CustomImageCrop(
cropController: controller,
image: const AssetImage('assets/test.png'),
),
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You can provide the image using any Imageprovider.
Parameters #
required image #
The image that needs to be cropped
cropController #
The controller used to adjust the image and crop it.
overlayColor #
The color above the image that will be cropped
backgroundColor #
The color behind the image. This color will also be used when there are gaps/empty space after the cropping
shape #
The shape of the cropping path.
cropPercentage #
How big the crop should be in regards to the width and height available to the cropping widget.
drawPath #
How the border of the crop should be painted. default DottedCropPathPainter.drawPath and SolidCropPathPainter.drawPath are provided, but you can create/provide any CustomPaint.
pathPaint #
Custom painting for the crop area border style.
canRotate #
Whether to allow the image to be rotated.
customProgressIndicator #
Custom widget for progress indicator.
ratio #
Ratio of the cropping area.
If shape`` is set to CustomCropShape.Ratio, this property is required. For example, to create a square crop area, use [Ratio(width: 1, height: 1).
To create a rectangular crop area with a 16:9 aspect ratio, use [Ratio(width: 16, height: 9)`.
borderRadius #
The radius for rounded corners of the cropping area.
forceInsideCropArea #
Whether image area must cover clip path.
Controller Methods #
addTransition #
void addTransition(CropImageData transition)
Add the position, angle and scale to the current state. This can be used to adjust the image with sliders, buttons, etc.
setData #
void setData(CropImageData data)
Set the position, angle and scale to the specified values. This can be used to center the image by pressing a button for example.
reset #
void reset()
Reset the image to its default state
onCropImage #
Future<MemoryImage> onCropImage()
Crops the image in its current state, this will return a MemoryImage that contains the cropped image
Example #
See example/lib
class MyHomePage extends StatefulWidget {
final String title;

MyHomePage({
required this.title,
Key? key,
}) : super(key: key);

@override
_MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
late CustomImageCropController controller;

@override
void initState() {
super.initState();
controller = CustomImageCropController();
}

@override
void dispose() {
controller.dispose();
super.dispose();
}

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
brightness: Brightness.dark,
),
body: Column(
children: [
Expanded(
child: CustomImageCrop(
cropController: controller,
image: const AssetImage('assets/test.png'), // Any Imageprovider will work, try with a NetworkImage for example...
),
),
Row(
children: [
IconButton(icon: const Icon(Icons.refresh), onPressed: controller.reset),
IconButton(icon: const Icon(Icons.zoom_in), onPressed: () => controller.addTransition(CropImageData(scale: 1.33))),
IconButton(icon: const Icon(Icons.zoom_out), onPressed: () => controller.addTransition(CropImageData(scale: 0.75))),
IconButton(icon: const Icon(Icons.rotate_left), onPressed: () => controller.addTransition(CropImageData(angle: -pi / 4))),
IconButton(icon: const Icon(Icons.rotate_right), onPressed: () => controller.addTransition(CropImageData(angle: pi / 4))),
IconButton(
icon: const Icon(Icons.crop),
onPressed: () async {
final image = await controller.onCropImage();
if (image != null) {
Navigator.of(context).push(MaterialPageRoute(builder: (BuildContext context) => ResultScreen(image: image)));
}
},
),
],
),
SizedBox(height: MediaQuery.of(context).padding.bottom),
],
),
);
}
}
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