BetterLyrics/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Extensions/RectExtensions.cs

using Vanara.PInvoke;
using Windows.Foundation;
using Windows.Graphics;

namespace BetterLyrics.WinUI3.Extensions
{
    public static class RectExtensions
    {
        extension(Rect rect)
        {
            public RectInt32 ToRectInt32() => new(
                (int)rect.X,
                (int)rect.Y,
                (int)rect.Width,
                (int)rect.Height
            );

            public Rect WithHeight(double height) => new(
                rect.X,
                rect.Y,
                rect.Width,
                height
            );

            public Rect WithWidth(double width) => new(
                rect.X,
                rect.Y,
                width,
                rect.Height
            );

            public Rect WithX(double x) => new(
                x,
                rect.Y,
                rect.Width,
                rect.Height
            );

            public Rect WithY(double y) => new(
                rect.X,
                y,
                rect.Width,
                rect.Height
            );

            public Rect AddY(double y) => new(
                rect.X,
                rect.Y + y,
                rect.Width,
                rect.Height
            );

            public Rect Extend(double left, double top, double right, double bottom) => new(
                rect.X - left,
                rect.Y - top,
                rect.Width + left + right,
                rect.Height + top + bottom
            );

            public Rect Extend(double padding) => Extend(rect, padding, padding, padding, padding);

            public Rect Scale(double scale)
            {
                double originalWidth = rect.Width;
                double originalHeight = rect.Height;

                double scaledWidth = originalWidth * scale;
                double scaledHeight = originalHeight * scale;

                double scaleOffsetX = (scaledWidth - originalWidth) / 2;
                double scaleOffsetY = (scaledHeight - originalHeight) / 2;

                return new Rect(
                    rect.X - scaleOffsetX,
                    rect.Y - scaleOffsetY,
                    scaledWidth,
                    scaledHeight
                );
            }
        }

        extension(RECT rect)
        {
            public Rect ToRect() => new(
                rect.Left,
                rect.Top,
                rect.Right - rect.Left,
                rect.Bottom - rect.Top
            );
        }
    }
}