Responsive.Avalonia is a library that provides responsive breakpoints for AvaloniaUI applications. It allows developers to create responsive layouts that adapt to different screen sizes using predefined breakpoints.

• Predefined Breakpoints: Use predefined breakpoints such as Xs, Sm, Md, Lg, Xl, and Xxl.
• Customizable Visibility: Control the visibility of UI elements based on the current screen width or height.
• Orientation Mode: Toggle between horizontal (width-based) and vertical (height-based) breakpoints using the Orientation property on BreakpointProvider.
• Easy Integration: Simple to integrate into existing AvaloniaUI projects.

You can install the library via NuGet Package Manager:

dotnet add package Responsive.Avalonia

Add Namespace

xmlns:rc="using:Responsive.Avalonia"

There are two controls needed to be used. The BreakpointProvider is the root that detects the size changes, and the Show control contains the elements that will be shown when the measured length (width or height, depending on orientation) is within the breakpoint.

By default, breakpoints are based on width (horizontal mode). To use height (vertical mode), set the Orientation property on BreakpointProvider:

<rc:BreakpointProvider Orientation="Vertical">
    <!-- Responsive content here -->
</rc:BreakpointProvider>

Or in code:

breakpointProvider.Orientation = ResponsiveOrientationMode.Vertical;

<rc:BreakpointProvider Orientation="Horizontal"> <!-- or "Vertical" -->
    <rc:Show Breakpoint="Xs">
        <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Foreground="White"
                   FontWeight="Medium" FontSize="14" Text="Visible on Small Screens"/>
    </rc:Show>
    <rc:Show Breakpoint="Sm">
        <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Foreground="White"
                   FontWeight="Medium" FontSize="24" Text="Visible on Medium Screens"/>
    </rc:Show>
    <rc:Show Breakpoint="MdAndUp">
        <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Foreground="White"
                   FontWeight="Medium" FontSize="38" Text="Visible on Large Screens"/>
    </rc:Show>
</rc:BreakpointProvider>

Breakpoint - Specifies the breakpoint at which the content should be visible. It is of type Breakpoint.

Note: The length refers to width in horizontal mode and height in vertical mode, depending on the Orientation property of the nearest BreakpointProvider.

Condition - A custom condition that can be used to determine the visibility of the content. It is a Func<double,bool> delegate that returns true if the content should be visible. See the Custom Conditions section for more details.

Invert - A boolean property that inverts the visibility condition. If set to true, the content will be hidden at the specified breakpoint. This property is also respected when using the Condition property.

For more granular control, custom conditions can be used instead of the standard breakpoints. The condition receives the measured length (width or height, depending on orientation) of the breakpoint provider. For example, to show the element if the length is between 600 and 700 pixels:

using System;

namespace SampleApp;

public static class CustomBreakpoints
{
    // Example implementation of a custom breakpoint for demonstration purposes.
    public static Func<double,bool> Length600To700Condition => length => length is >= 600 and < 700;
}

To use this, set the Condition property of the Show control:

<rc:Show Condition="{x:Static sampleApp:CustomBreakpoints.Length600To700Condition}">
   <TextBlock Text="Visible if length is between 600px and 700px" />
</rc:Show>

This project is licensed under the MIT License. See the LICENSE file for more details.