Linear Gradients

Hover over the image to see the chart animation

View Model

``````using CommunityToolkit.Mvvm.ComponentModel;
using LiveChartsCore;
using LiveChartsCore.SkiaSharpView;
using LiveChartsCore.SkiaSharpView.Painting;
using SkiaSharp;

namespace ViewModelsSamples.Design.LinearGradients;

[ObservableObject]
public partial class ViewModel
{
// linear gradients are based on SkiaSharp linear gradients
// for more info please see:
// https://docs.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/graphics/skiasharp/effects/shaders/linear-gradient

public ISeries[] Series { get; set; } = new ISeries[]
{
new ColumnSeries<int>
{
Values = new []{ 3, 7, 2, 9, 4 },
Stroke = null,

// this is an easy way to set a linear gradient:
// Fill = new LinearGradientPaint(new SKColor(255, 140, 148), new SKColor(220, 237, 194))

// but you can customize the gradient
Fill = new LinearGradientPaint(
// the gradient will use the following colors array
new [] { new SKColor(255, 140, 148), new SKColor(220, 237, 194) },

// now with the following points we are specifying the orientation of the gradient
// by default the gradient is orientated horizontally
// defined by the points: (0, 0.5) and (1, 0.5)
// but for this sample we will use a vertical gradient:

// to build a vertical gradient we must specify 2 points that will draw a imaginary line
// the gradient will interpolate colors lineally as it moves following this imaginary line
// the coordinates of these points (X, Y) go from 0 to 1
// where 0 is the start of the axis and 1 the end. Then to build our vertical gradient

// we must go from the point:
// (x0, y0) where x0 could be read as "the middle of the x axis" (0.5) and y0 as "the start of the y axis" (0)
new SKPoint(0.5f, 0),

// to the point:
// (x1, y1) where x1 could be read as "the middle of the x axis" (0.5) and y0 as "the end of the y axis" (1)
new SKPoint(0.5f, 1))
},
new LineSeries<int>
{
Values = new []{ 4, 2, 8, 5, 3 },
GeometrySize = 22,
Stroke = new LinearGradientPaint(new[]{ new SKColor(45, 64, 89), new SKColor(255, 212, 96)}) { StrokeThickness = 10 },
GeometryStroke = new LinearGradientPaint(new[]{ new SKColor(45, 64, 89), new SKColor(255, 212, 96)}) { StrokeThickness = 10 },
Fill = null
}
};
}

``````
``````using Eto.Forms;
using LiveChartsCore.SkiaSharpView.Eto;
using ViewModelsSamples.Design.LinearGradients;

namespace EtoFormsSample.Design.LinearGradients;

public class View : Panel
{
private readonly CartesianChart cartesianChart;

public View()
{
var viewModel = new ViewModel();

cartesianChart = new CartesianChart
{
Series = viewModel.Series,
LegendPosition = LiveChartsCore.Measure.LegendPosition.Right,
};

Content = cartesianChart;
}
}

``````