flutter_circular_chart/example/color_palette.dart
2017-11-03 13:45:27 +02:00

36 lines
776 B
Dart

import 'dart:math';
import 'package:flutter/material.dart';
class ColorPalette {
static final ColorPalette primary = new ColorPalette(<Color>[
Colors.blue[400],
Colors.blue[200],
Colors.red[400],
Colors.red[200],
Colors.green[400],
Colors.green[200],
Colors.yellow[400],
Colors.yellow[200],
Colors.purple[400],
Colors.purple[200],
Colors.orange[400],
Colors.orange[200],
Colors.teal[400],
Colors.teal[200],
Colors.black,
]);
ColorPalette(List<Color> colors) : _colors = colors {
assert(colors.isNotEmpty);
}
final List<Color> _colors;
Color operator [](int index) => _colors[index % length];
int get length => _colors.length;
Color random(Random random) => this[random.nextInt(length)];
}