File: Shapes\ScaleTransform.cs
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Project: src\src\Controls\src\Core\Controls.Core.csproj (Microsoft.Maui.Controls)
#nullable disable
namespace Microsoft.Maui.Controls.Shapes
{
	/// <include file="../../../docs/Microsoft.Maui.Controls.Shapes/ScaleTransform.xml" path="Type[@FullName='Microsoft.Maui.Controls.Shapes.ScaleTransform']/Docs/*" />
	public class ScaleTransform : Transform
	{
		/// <include file="../../../docs/Microsoft.Maui.Controls.Shapes/ScaleTransform.xml" path="//Member[@MemberName='.ctor'][1]/Docs/*" />
		public ScaleTransform()
		{
 
		}
 
		/// <include file="../../../docs/Microsoft.Maui.Controls.Shapes/ScaleTransform.xml" path="//Member[@MemberName='.ctor'][2]/Docs/*" />
		public ScaleTransform(double scaleX, double scaleY)
		{
			ScaleX = scaleX;
			ScaleY = scaleY;
		}
 
		/// <include file="../../../docs/Microsoft.Maui.Controls.Shapes/ScaleTransform.xml" path="//Member[@MemberName='.ctor'][3]/Docs/*" />
		public ScaleTransform(double scaleX, double scaleY, double centerX, double centerY)
		{
			ScaleX = scaleX;
			ScaleY = scaleY;
			CenterX = centerX;
			CenterY = centerY;
		}
 
		/// <summary>Bindable property for <see cref="ScaleX"/>.</summary>
		public static readonly BindableProperty ScaleXProperty =
			BindableProperty.Create(nameof(ScaleX), typeof(double), typeof(ScaleTransform), 1.0,
				propertyChanged: OnTransformPropertyChanged);
 
		/// <summary>Bindable property for <see cref="ScaleY"/>.</summary>
		public static readonly BindableProperty ScaleYProperty =
			BindableProperty.Create(nameof(ScaleY), typeof(double), typeof(ScaleTransform), 1.0,
				propertyChanged: OnTransformPropertyChanged);
 
		/// <summary>Bindable property for <see cref="CenterX"/>.</summary>
		public static readonly BindableProperty CenterXProperty =
			BindableProperty.Create(nameof(CenterX), typeof(double), typeof(ScaleTransform), 0.0,
				propertyChanged: OnTransformPropertyChanged);
 
		/// <summary>Bindable property for <see cref="CenterY"/>.</summary>
		public static readonly BindableProperty CenterYProperty =
			BindableProperty.Create(nameof(CenterY), typeof(double), typeof(ScaleTransform), 0.0,
				propertyChanged: OnTransformPropertyChanged);
 
		/// <include file="../../../docs/Microsoft.Maui.Controls.Shapes/ScaleTransform.xml" path="//Member[@MemberName='ScaleX']/Docs/*" />
		public double ScaleX
		{
			set { SetValue(ScaleXProperty, value); }
			get { return (double)GetValue(ScaleXProperty); }
		}
 
		/// <include file="../../../docs/Microsoft.Maui.Controls.Shapes/ScaleTransform.xml" path="//Member[@MemberName='ScaleY']/Docs/*" />
		public double ScaleY
		{
			set { SetValue(ScaleYProperty, value); }
			get { return (double)GetValue(ScaleYProperty); }
		}
 
		/// <include file="../../../docs/Microsoft.Maui.Controls.Shapes/ScaleTransform.xml" path="//Member[@MemberName='CenterX']/Docs/*" />
		public double CenterX
		{
			set { SetValue(CenterXProperty, value); }
			get { return (double)GetValue(CenterXProperty); }
		}
 
		/// <include file="../../../docs/Microsoft.Maui.Controls.Shapes/ScaleTransform.xml" path="//Member[@MemberName='CenterY']/Docs/*" />
		public double CenterY
		{
			set { SetValue(CenterYProperty, value); }
			get { return (double)GetValue(CenterYProperty); }
		}
 
		static void OnTransformPropertyChanged(BindableObject bindable, object oldValue, object newValue)
		{
			(bindable as ScaleTransform).OnTransformPropertyChanged();
		}
 
		void OnTransformPropertyChanged()
		{
			Value = new Matrix(ScaleX, 0, 0, ScaleY, CenterX * (1 - ScaleX), CenterY * (1 - ScaleY));
		}
	}
}