painter2

Description:

painter2

painter2 #
A simple flutter widget to paint with your fingers.
Features #
The widget supports:

Changing fore- and background color
Setting an image as background
Changing the thickness of lines you draw
Exporting your painting as png
Undo/Redo drawing a line
Clear the whole drawing

Installation #
In your pubspec.yaml file within your Flutter Project:
dependencies:
painter2: any
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Then import it:
import 'package:painter2/painter2.dart';
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Use it #
In order to use this plugin, first create a controller:
PainterController controller = PainterController();
controller.thickness = 5.0; // Set thickness of your brush. Defaults to 1.0
controller.backgroundColor = Colors.green; // Background color is ignores if you set a background image
controller.backgroundImage = Image.network(...); // Sets a background image. You can load images as you would normally do: From an asset, from the network, from memory...
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That controller will handle all properties of your drawing space.
Then, to display the painting area, create an inline Painter object and give it a reference to your previously created controller:
Painter(controller)
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By exporting the painting as PNG, you will get an Uint8List object which represents the bytes of the png final file:
await controller.exportAsPNGBytes();
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The library does not handle saving the final image anywhere.
Example #
For a full example take a look at the example project.
Here is a short recording showing it.
Note that the color picker is an external dependency which is only required for the example.