106 lines
2.3 KiB
Dart
106 lines
2.3 KiB
Dart
import "package:flutter/material.dart";
|
|
|
|
void main() {
|
|
runApp(const MainApp());
|
|
}
|
|
|
|
class MainApp extends StatelessWidget {
|
|
const MainApp({super.key});
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return const Background();
|
|
}
|
|
}
|
|
|
|
class Background extends StatelessWidget {
|
|
const new({
|
|
super.key,
|
|
});
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return LayoutBuilder(
|
|
builder: (context, constraints) => Stack(
|
|
textDirection: TextDirection.ltr,
|
|
children: [
|
|
CustomPaint(
|
|
size: constraints.biggest,
|
|
painter: Ceiling(),
|
|
),
|
|
CustomPaint(
|
|
size: constraints.biggest,
|
|
painter: Floor(),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class Ceiling extends CustomPainter {
|
|
@override
|
|
void paint(Canvas canvas, Size size) {
|
|
final Rect rect = Offset.zero & size;
|
|
final double halfHeight = rect.height / 2;
|
|
final Rect topHalf = Rect.fromLTWH(
|
|
rect.left,
|
|
rect.top,
|
|
rect.width,
|
|
halfHeight,
|
|
);
|
|
|
|
const LinearGradient gradient = LinearGradient(
|
|
begin: Alignment.topCenter,
|
|
end: Alignment.bottomCenter,
|
|
colors: [
|
|
Color.fromRGBO(32, 32, 32, 1.0),
|
|
Color.fromRGBO(96, 96, 96, 1.0),
|
|
],
|
|
stops: [0.0, 1.0],
|
|
);
|
|
canvas.drawRect(
|
|
topHalf,
|
|
Paint()..shader = gradient.createShader(topHalf),
|
|
);
|
|
}
|
|
|
|
@override
|
|
bool shouldRepaint(covariant oldDelegate) => false;
|
|
@override
|
|
bool shouldRebuildSemantics(covariant oldDelegate) => false;
|
|
}
|
|
|
|
class Floor extends CustomPainter {
|
|
@override
|
|
void paint(Canvas canvas, Size size) {
|
|
final Rect rect = Offset.zero & size;
|
|
final double halfHeight = rect.height / 2;
|
|
final Rect bottomHalf = Rect.fromLTWH(
|
|
rect.left,
|
|
halfHeight,
|
|
rect.width,
|
|
rect.bottom,
|
|
);
|
|
|
|
const LinearGradient gradient = LinearGradient(
|
|
begin: Alignment.topCenter,
|
|
end: Alignment.bottomCenter,
|
|
colors: [
|
|
Color.fromRGBO(32, 32, 0, 1.0),
|
|
Color.fromRGBO(96, 96, 0, 1.0),
|
|
],
|
|
stops: [0.0, 1.0],
|
|
);
|
|
canvas.drawRect(
|
|
bottomHalf,
|
|
Paint()..shader = gradient.createShader(bottomHalf),
|
|
);
|
|
}
|
|
|
|
@override
|
|
bool shouldRepaint(covariant oldDelegate) => false;
|
|
@override
|
|
bool shouldRebuildSemantics(covariant oldDelegate) => false;
|
|
}
|