WidgetDragEventArgs.cs

using System.Drawing;
using System.Numerics;
 
namespace Gondwana.Widgets;

public sealed class WidgetDragEventArgs : WidgetEventArgs
{
    public WidgetDragEventArgs(WidgetBase widget,
                               PointF startScreenPositionPx,
                               PointF currentScreenPositionPx,
                               WidgetPointerButtonEnum button = WidgetPointerButtonEnum.Left,
                               long tick = 0,
                               int pointerId = 0)
        : base(widget, tick)
    {
        StartScreenPositionPx = startScreenPositionPx;
        CurrentScreenPositionPx = currentScreenPositionPx;
        Button = button;
        PointerId = pointerId;
    }

    public PointF StartScreenPositionPx { get; }

    public PointF CurrentScreenPositionPx { get; }

    public WidgetPointerButtonEnum Button { get; }

    public int PointerId { get; }

    public Vector2 TotalDeltaPx => new(CurrentScreenPositionPx.X - StartScreenPositionPx.X,
                                       CurrentScreenPositionPx.Y - StartScreenPositionPx.Y);
}