Button with HorizontalTextAlignmentProperty and VerticalTextAlignmentProperty

RxButton.cs

using Microsoft.Maui.Handlers;

#if ANDROID
using Google.Android.Material.Button;
#elif IOS
using UIKit;
#elif WINDOWS
using Microsoft.UI.Xaml.Controls;
#endif

namespace RxUI.MauiToolkit.Controls;

public static class RxButtonExtensions
{
	public static MauiAppBuilder UseRxButton(this MauiAppBuilder builder)
	{
		return builder.ConfigureMauiHandlers(
			handlers =>
			{
#if ANDROID
				handlers.AddHandler<RxButton, RxButtonHandler>();
#elif IOS
				handlers.AddHandler<RxButton, RxButtonHandler>();
#elif WINDOWS
				handlers.AddHandler<RxButton, RxButtonHandler>();
#endif
			});
	}
}


/// <summary>
/// https://github.com/marcoablanco/RxUI.MauiToolkit/blob/develop/RxUI.MauiToolkit/Controls/RxButton.cs
/// https://github.com/marcoablanco/RxUI.MauiToolkit/blob/develop/RxUI.MauiToolkit/Platforms/Android/Handlers/RxButtonHandler.cs
/// https://github.com/marcoablanco/RxUI.MauiToolkit/blob/develop/RxUI.MauiToolkit/Platforms/Windows/Handlers/RxButtonHandler.cs
/// https://github.com/marcoablanco/RxUI.MauiToolkit/blob/develop/RxUI.MauiToolkit/Platforms/iOS/Handlers/RxButtonHandler.cs
/// </summary>
public class RxButton : Button
{
    public static readonly BindableProperty HorizontalTextAlignmentProperty = BindableProperty.Create(nameof(HorizontalTextAlignment), typeof(TextAlignment), typeof(RxButton));
    public static readonly BindableProperty VerticalTextAlignmentProperty = BindableProperty.Create(nameof(VerticalTextAlignment), typeof(TextAlignment), typeof(RxButton));


    public TextAlignment HorizontalTextAlignment
    {
        get => (TextAlignment)GetValue(HorizontalTextAlignmentProperty);
        set => SetValue(HorizontalTextAlignmentProperty, value);
    }

    public TextAlignment VerticalTextAlignment
    {
        get => (TextAlignment)GetValue(VerticalTextAlignmentProperty);
        set => SetValue(VerticalTextAlignmentProperty, value);
    }
}

internal class RxButtonHandler : ButtonHandler
{
	public override void UpdateValue(string property)
	{
		base.UpdateValue(property);
		if (property == RxButton.HorizontalTextAlignmentProperty.PropertyName)
			OnTextAlignmentPropertyChanged();
	}


#if ANDROID
	protected override void ConnectHandler(MaterialButton platformView)
	{
		base.ConnectHandler(platformView);
		OnTextAlignmentPropertyChanged();
	}
#elif IOS
	protected override void ConnectHandler(UIButton platformView)
	{
		base.ConnectHandler(platformView);
		OnTextAlignmentPropertyChanged();
	}
#endif

	private void OnTextAlignmentPropertyChanged()
	{
		if (VirtualView is RxButton virtualButton)
		{
#if ANDROID
			var horizontalFlag = virtualButton.HorizontalTextAlignment switch
			{
				TextAlignment.Start => global::Android.Views.GravityFlags.Left,
				TextAlignment.Center => global::Android.Views.GravityFlags.CenterHorizontal,
				TextAlignment.End => global::Android.Views.GravityFlags.Right,
				_ => global::Android.Views.GravityFlags.Center
			};
			var verticalFlag = virtualButton.VerticalTextAlignment switch
			{
				TextAlignment.Start => global::Android.Views.GravityFlags.Top,
				TextAlignment.Center => global::Android.Views.GravityFlags.CenterVertical,
				TextAlignment.End => global::Android.Views.GravityFlags.Bottom,
				_ => global::Android.Views.GravityFlags.Center
			};
			PlatformView.Gravity = horizontalFlag | verticalFlag;
#elif IOS
			// PlatformView.HorizontalAlignment = virtualButton.HorizontalTextAlignment switch
			// {
			// 	TextAlignment.Start => UIKit.UIControlContentHorizontalAlignment.Left,
			// 	TextAlignment.Center => UIKit.UIControlContentHorizontalAlignment.Center,
			// 	TextAlignment.End => UIKit.UIControlContentHorizontalAlignment.Right,
			// 	_ => UIKit.UIControlContentHorizontalAlignment.Center,
			// };

			PlatformView.TitleLabel.TextAlignment = virtualButton.HorizontalTextAlignment switch
			{
				TextAlignment.Start => UITextAlignment.Left,
				TextAlignment.Center => UITextAlignment.Center,
				TextAlignment.End => UITextAlignment.Right,
				_ => UITextAlignment.Center,
			};
			
			PlatformView.VerticalAlignment = virtualButton.HorizontalTextAlignment switch
			{
				TextAlignment.Start => UIKit.UIControlContentVerticalAlignment.Top,
				TextAlignment.Center => UIKit.UIControlContentVerticalAlignment.Center,
				TextAlignment.End => UIKit.UIControlContentVerticalAlignment.Bottom,
				_ => UIKit.UIControlContentVerticalAlignment.Center,
			};
#elif WINDOWS
			PlatformView.HorizontalContentAlignment = virtualButton.HorizontalTextAlignment switch
			{
				TextAlignment.Start => Microsoft.UI.Xaml.HorizontalAlignment.Left,
				TextAlignment.Center => Microsoft.UI.Xaml.HorizontalAlignment.Center,
				TextAlignment.End => Microsoft.UI.Xaml.HorizontalAlignment.Right,
				_ => Microsoft.UI.Xaml.HorizontalAlignment.Center,
			};
			PlatformView.VerticalContentAlignment = virtualButton.HorizontalTextAlignment switch
			{
				TextAlignment.Start => Microsoft.UI.Xaml.VerticalAlignment.Top,
				TextAlignment.Center => Microsoft.UI.Xaml.VerticalAlignment.Center,
				TextAlignment.End => Microsoft.UI.Xaml.VerticalAlignment.Bottom,
				_ => Microsoft.UI.Xaml.VerticalAlignment.Center,
			};
#endif
		}
	}
}