mattercontrol/MatterControlLib/SlicerConfiguration/SettingsRowExtensions.cs

/*
Copyright (c) 2022, Lars Brubaker, John Lewin
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

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   list of conditions and the following disclaimer.
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   and/or other materials provided with the distribution.

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*/

using System;
using System.Collections.Generic;
using MatterHackers.Agg;
using MatterHackers.Agg.UI;
using MatterHackers.MatterControl.PartPreviewWindow;
using MatterHackers.VectorMath;

namespace MatterHackers.MatterControl.CustomWidgets
{
    public static class SettingsRowExtensions
    {
		public static void ShowPopover(this SystemWindow systemWindow, MatePoint anchor, MatePoint popup, RectangleDouble altBounds = default(RectangleDouble), double secondsToClose = 0)
		{
			var settingsRow = anchor.Widget as SettingsRow;
			var sliceSettingsPopover = popup.Widget as ClickablePopover;

			var hookedWidgets = new HashSet<GuiWidget>();

			void Anchor_Closed(object sender, EventArgs e)
			{
				if (popup.Widget is IOverrideAutoClose overideAutoClose
					&& !overideAutoClose.AllowAutoClose)
				{
					return;
				}

				// If the owning widget closed, so should we
				popup.Widget.Close();

				foreach (var widget in hookedWidgets)
				{
					widget.Closed -= Anchor_Closed;
				}
			}

			void WidgetRelativeTo_PositionChanged(object sender, EventArgs e)
			{
				if (anchor.Widget?.Parent != null)
				{
					// Calculate left aligned screen space position (using widgetRelativeTo.parent)
					Vector2 anchorLeft = anchor.Widget.Parent.TransformToScreenSpace(anchor.Widget.Position);
					anchorLeft += new Vector2(altBounds.Left, altBounds.Bottom);

					Vector2 popupPosition = anchorLeft;

					var bounds = altBounds == default(RectangleDouble) ? anchor.Widget.LocalBounds : altBounds;

					Vector2 xPosition = PopupMenu.GetXAnchor(anchor.Mate, popup.Mate, popup.Widget, bounds);

					Vector2 screenPosition;

					screenPosition = anchorLeft + xPosition;

					// Constrain
					if (screenPosition.X + popup.Widget.Width > systemWindow.Width
						|| screenPosition.X < 0)
					{
						var altXPosition = PopupMenu.GetXAnchor(anchor.AltMate, popup.AltMate, popup.Widget, bounds);

						var altScreenPosition = anchorLeft + altXPosition;

						// Prefer clipping on edge revealed by resize
						if ((popup.AltMate.Right && altScreenPosition.X > -15)
							|| (popup.AltMate.Left && altScreenPosition.X + popup.Widget.Width < systemWindow.Width))
						{
							xPosition = altXPosition;

							if (settingsRow != null
								&& sliceSettingsPopover != null)
							{
								sliceSettingsPopover.ArrowDirection = settingsRow.ArrowDirection == ArrowDirection.Left ? ArrowDirection.Right : ArrowDirection.Left;
							}
						}
					}

					popupPosition += xPosition;

					Vector2 yPosition = PopupMenu.GetYAnchor(anchor.Mate, popup.Mate, popup.Widget, bounds);

					screenPosition = anchorLeft + yPosition;

					// Constrain
					if (anchor.AltMate != null
						&& (screenPosition.Y + popup.Widget.Height > systemWindow.Height
							|| screenPosition.Y < 0))
					{
						yPosition = PopupMenu.GetYAnchor(anchor.AltMate, popup.AltMate, popup.Widget, bounds);

						if (settingsRow != null)
						{
							settingsRow.ArrowDirection = settingsRow.ArrowDirection == ArrowDirection.Up ? ArrowDirection.Down : ArrowDirection.Up;
						}
					}

					popup.Widget.Closed += Anchor_Closed;
					anchor.Widget.Closed += Anchor_Closed;
					hookedWidgets.Add(anchor.Widget);

					foreach (var widget in anchor.Widget.Parents<GuiWidget>())
					{
						widget.Closed += Anchor_Closed;
						hookedWidgets.Add(widget);
					}

					popupPosition += yPosition;

					popup.Widget.Position = popupPosition;
				}
			}

			WidgetRelativeTo_PositionChanged(anchor.Widget, null);

			popup.Widget.BoundsChanged += (s, e) => WidgetRelativeTo_PositionChanged(anchor.Widget, null);

			// When the widgets position changes, sync the popup position
			systemWindow?.AddChild(popup.Widget);

			if (secondsToClose > 0)
			{
				UiThread.RunOnIdle(() => Anchor_Closed(null, null), secondsToClose);
			}
		}
	}
}