mattercontrol/PartPreviewWindow/View3D/Actions/SubtractEditor.cs

/*
Copyright (c) 2017, Lars Brubaker, John Lewin
All rights reserved.

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modification, are permitted provided that the following conditions are met:

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

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*/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MatterHackers.Agg;
using MatterHackers.Agg.UI;
using MatterHackers.DataConverters3D;
using MatterHackers.Localizations;

namespace MatterHackers.MatterControl.PartPreviewWindow.View3D
{

	public class SubtractEditor : IObject3DEditor
	{
		private SubtractObject3D subtractObject3D;
		private View3DWidget view3DWidget;
		public string Name => "Subtract";

		public bool Unlocked { get; } = true;

		public GuiWidget Create(IObject3D group, View3DWidget view3DWidget, ThemeConfig theme)
		{
			this.view3DWidget = view3DWidget;
			this.subtractObject3D = group as SubtractObject3D;

			var mainContainer = new FlowLayoutWidget(FlowDirection.TopToBottom);

			if (group is SubtractObject3D)
			{
				AddSubtractSelector(view3DWidget, mainContainer, theme);
			}

			return mainContainer;
		}

		public IEnumerable<Type> SupportedTypes() => new Type[]
		{
			typeof(SubtractObject3D),
		};

		private void AddSubtractSelector(View3DWidget view3DWidget, FlowLayoutWidget tabContainer, ThemeConfig theme)
		{
			var children = subtractObject3D.Children.ToList();

			tabContainer.AddChild(new TextWidget("Set Subtract")
			{
				TextColor = ActiveTheme.Instance.PrimaryTextColor,
				HAnchor = HAnchor.Left,
				AutoExpandBoundsToText = true,
			});

			Dictionary<IObject3D, ICheckbox> objectChecks = new Dictionary<IObject3D, ICheckbox>();
			// create this early so we can use enable disable it on button changed state
			var updateButton = theme.ButtonFactory.Generate("Update".Localize());
			updateButton.Margin = new BorderDouble(5);
			updateButton.HAnchor = HAnchor.Right;
			updateButton.Click += (s, e) =>
			{
				// make sure the mesh on the group is not visible
				updateButton.Enabled = PrepareForSubtract(objectChecks);
				updateButton.Enabled = false;
				subtractObject3D.Rebuild(null);
			};

			List<GuiWidget> radioSiblings = new List<GuiWidget>();
			for (int i = 0; i < children.Count; i++)
			{
				var itemIndex = i;
				var item = children[itemIndex];
				FlowLayoutWidget rowContainer = new FlowLayoutWidget();

				GuiWidget selectWidget;
				if (children.Count == 2)
				{
					var radioButton = new RadioButton(string.IsNullOrWhiteSpace(item.Name) ? $"{itemIndex}" : $"{item.Name}")
					{
						Checked = item.OutputType == PrintOutputTypes.Hole,
						TextColor = ActiveTheme.Instance.PrimaryTextColor
					};
					radioSiblings.Add(radioButton);
					radioButton.SiblingRadioButtonList = radioSiblings;
					selectWidget = radioButton;
				}
				else
				{
					selectWidget = new CheckBox(string.IsNullOrWhiteSpace(item.Name) ? $"{itemIndex}" : $"{item.Name}")
					{
						Checked = item.OutputType == PrintOutputTypes.Hole,
						TextColor = ActiveTheme.Instance.PrimaryTextColor
					};
				}
				rowContainer.AddChild(selectWidget);
				ICheckbox checkBox = selectWidget as ICheckbox;

				objectChecks.Add(item, checkBox);

				checkBox.CheckedStateChanged += (s, e) =>
				{
					updateButton.Enabled = PrepareForSubtract(objectChecks);
				};

				tabContainer.AddChild(rowContainer);
			}

			bool operationApplied = subtractObject3D.Descendants()
				.Where((obj) => obj.OwnerID == subtractObject3D.ID)
				.Where((objId) => objId.Mesh != objId.Children.First().Mesh).Any();

			bool selectionHasBeenMade = subtractObject3D.Descendants()
				.Where((obj) => obj.OwnerID == subtractObject3D.ID && obj.OutputType == PrintOutputTypes.Hole)
				.Any();

			if (!operationApplied && !selectionHasBeenMade)
			{
				// select the last item
				if (tabContainer.Descendants().Where((d) => d is ICheckbox).Last() is ICheckbox lastCheckBox)
				{
					lastCheckBox.Checked = true;
				}
			}
			else
			{
				updateButton.Enabled = !operationApplied;
			}

			// add this last so it is at the bottom
			tabContainer.AddChild(updateButton);
		}

		private bool PrepareForSubtract(Dictionary<IObject3D, ICheckbox> objectChecks)
		{
			subtractObject3D.Rebuilding = true;
			// make sure the mesh on the group is not visible
			subtractObject3D.ResetMeshWrappers(Object3DPropertyFlags.All);

			foreach (var keyValue in objectChecks)
			{
				// and set the output type for this checkbox
				keyValue.Key.OutputType = keyValue.Value.Checked ? PrintOutputTypes.Hole : PrintOutputTypes.Solid;
			}

			int holeCount = objectChecks.Where((o) => o.Key.OutputType == PrintOutputTypes.Hole).Count();
			int solidCount = objectChecks.Where((o) => o.Key.OutputType != PrintOutputTypes.Hole).Count();

			subtractObject3D.Rebuilding = false;
			return objectChecks.Count != holeCount && objectChecks.Count != solidCount;
		}
	}
}