Flutter ShaderMask

Flutter ShaderMask widget is used to apply a shader on top of the child widget. It is a very powerful tool that can help make your design more attractive and visually interesting.

What is ShaderMask?

ShaderMask is a widget in Flutter that applies a shader to its child widget. A shader is a small program that runs on the GPU of the device and is used to create a specific type of effect.

The shader can be used to create different types of effects such as gradient, blur, and more. It can also be used to perform mathematical operations on the child widget, such as multiplication or subtraction.

How to use ShaderMask?

To apply a ShaderMask to a widget in Flutter, you need to first import the 'dart:ui' package. Here is an example of how to use ShaderMask:

import 'dart:ui' as ui;

ShaderMask(
  shaderCallback: (Rect bounds) {
     return ui.Gradient.linear(
       Offset(4.0, 24.0),
       Offset(24.0, 4.0),
       [Colors.red, Colors.blue],
     );
  },
  child: const Text('Flutter ShaderMask'),
)

In this example, we are applying a linear gradient shader to the child Text widget. The shader has two colors, red and blue, and goes from the top-left corner to the bottom-right corner of the widget.

You can also use predefined shaders such as RadialGradient, SweepGradient, and more.

Conclusion

Flutter ShaderMask is a powerful tool that can be used to enhance the design of your app. It can be used to create a variety of effects such as gradients, blurs, etc. I hope this brief introduction to ShaderMask has given you an idea of what it is and how to use it.