C# Avalonia 12- Drawing - Gradients

Gradients.axaml代码

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        Height="587" Width="347"
        x:Class="AvaloniaUI.Gradients"
        Title="Gradients">
    <Grid Margin="5" RowDefinitions="auto,auto,auto,auto,auto" ColumnDefinitions="*,auto">
        <Rectangle Width="150" Height="100" Margin="5">
            <Rectangle.Fill>
                <LinearGradientBrush >
                    <GradientStop Color="Blue" Offset="0"/>
                    <GradientStop Color="White" Offset="1" />
                </LinearGradientBrush>
            </Rectangle.Fill>
        </Rectangle>
        <TextBlock Grid.Column="1" VerticalAlignment="Center" Margin="5">Diagonal Linear Gradient</TextBlock>

        <Rectangle Width="150" Height="100" Margin="5" Grid.Row="1">
            <Rectangle.Fill>
                <LinearGradientBrush>
                    <GradientStop Color="Blue" Offset="0"/>
                    <GradientStop Color="White" Offset="0.5" />
                </LinearGradientBrush>
            </Rectangle.Fill>
        </Rectangle>
        <TextBlock Grid.Row="1" Grid.Column="1" VerticalAlignment="Center" Margin="5">With 0.5 Offset for White</TextBlock>

        <Rectangle Width="150" Height="100" Grid.Row="2" Margin="5">
            <Rectangle.Fill>
                <LinearGradientBrush StartPoint="0,0" EndPoint="0%,100%">
                    <GradientStop Color="Blue" Offset="0"/>
                    <GradientStop Color="White" Offset="1" />
                </LinearGradientBrush>
            </Rectangle.Fill>
        </Rectangle>
        <TextBlock Grid.Row="2" Grid.Column="1" VerticalAlignment="Center" Margin="5">Horizontal Linear Gradient</TextBlock>

        <Rectangle Width="150" Height="100" Grid.Row="3" Margin="5">
            <Rectangle.Fill>
                <LinearGradientBrush StartPoint="0,0" EndPoint="0%,50%" SpreadMethod="Reflect">
                    <GradientStop Color="Blue" Offset="0"/>
                    <GradientStop Color="White" Offset="1" />
                </LinearGradientBrush>
            </Rectangle.Fill>
        </Rectangle>
        <TextBlock Grid.Row="3" Grid.Column="1" VerticalAlignment="Center" Margin="5">Reflected Gradient</TextBlock>

        <Rectangle Width="150" Height="100" Grid.Row="4" Margin="5">
            <Rectangle.Fill>
                <LinearGradientBrush StartPoint="0,0" EndPoint="100%,100%">
                    <GradientStop Color="Yellow" Offset="0.0" />
                    <GradientStop Color="Red" Offset="0.25" />
                    <GradientStop Color="Blue" Offset="0.75" />
                    <GradientStop Color="LimeGreen" Offset="1.0" />
                </LinearGradientBrush>
            </Rectangle.Fill>
        </Rectangle>
        <TextBlock Grid.Row="4" Grid.Column="1" VerticalAlignment="Center" Margin="5">Multicolored Gradient</TextBlock>
    </Grid>
</Window>

Gradients.axaml.cs代码

using Avalonia;
using Avalonia.Controls;
using Avalonia.Markup.Xaml;

namespace AvaloniaUI;

public partial class Gradients : Window
{
    public Gradients()
    {
        InitializeComponent();
    }
}

运行效果