B20_UV_LogPC/B20UVLog/ViewModels/AxisDataViewModel.cs

using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore;
using LiveChartsCore.Defaults;
using LiveChartsCore.SkiaSharpView;
using LiveChartsCore.SkiaSharpView.Painting;
using LiveChartsCore.SkiaSharpView.VisualElements;
using SkiaSharp;
using System.Collections.ObjectModel;
using System.Drawing;
namespace B20UVLog.ViewModels
{
    internal class AxisDataViewModel : ObservableObject
    {
        private static SKColor _SKColor1 = new(0, 140, 214);
        private static SKColor _SKColor2 = new(103, 194, 58);
        private static SKColor _SKColor3 = new(230, 162, 60);
        private static SKColor _SKColor4 = new(245, 108, 108);
        private static SKColor _SKColor5 = new(144, 147, 153);

        private readonly ObservableCollection<ObservableValue> _observableValues;

        public AxisDataViewModel()
        {
            _observableValues = [new(3), new(1), new(4), new(1), new(5), new(9), new(2), new(6)];
            Series =
            [
                //new ColumnSeries<ObservableValue>
                //{
                //    Name = "Bar",
                //    Values = _observableValues,
                //    Fill = GenSolidColorPaint(_SKColor2)
                //},
                new LineSeries<ObservableValue>
                {
                    Name = "Line1",
                    Values = _observableValues,
                    Stroke = GenSolidColorPaint(_SKColor1),
                    GeometryStroke = GenSolidColorPaint(_SKColor1),
                    Fill = null,
                },
                new LineSeries<ObservableValue>
                {
                    Name = "Line2",
                    Values = [new(6), new(2), new(9), new(5), new(1), new(4), new(1), new(3)],
                    Stroke = GenSolidColorPaint(_SKColor2),
                    GeometryStroke = GenSolidColorPaint(_SKColor2),
                    Fill = null,
                },
            ];
        }

        private static SolidColorPaint GenSolidColorPaint(SKColor color, float strokeThickness = 4)
        {
            return new SolidColorPaint(color)
            {
                StrokeThickness = strokeThickness,
            };
        }

        public ObservableCollection<ISeries> Series { get; set; }

        public LabelVisual Title { get; set; } =
            new LabelVisual
            {
                Text = "标题",
                TextSize = 25,
                Padding = new LiveChartsCore.Drawing.Padding(15),
                Paint = new SolidColorPaint
                {
                    Color = SKColors.Black,
                    SKTypeface = SKFontManager.Default.MatchCharacter('汉'),
                },
            };
    }
}