Restore ChromeTab plus button for new parts

MatterControlLib/ApplicationView/ThemeConfig.cs

@@ -64,8 +64,9 @@ namespace MatterHackers.MatterControl
 		public double TabButtonHeight => 30 * GuiWidget.DeviceScale;
 		public double MenuGutterWidth => 35 * GuiWidget.DeviceScale;
 
-		private double microButtonHeight => 20 * GuiWidget.DeviceScale;
+		public double MicroButtonHeight => 20 * GuiWidget.DeviceScale;
 		private double microButtonWidth => 30 * GuiWidget.DeviceScale;
+
 		private readonly int defaultScrollBarWidth = 120;
 
 		/// <summary>
@@ -254,7 +255,7 @@ namespace MatterHackers.MatterControl
 				HoverColor = this.AccentMimimalOverlay,
 				Margin = new BorderDouble(right: 1),
 				HAnchor = HAnchor.Absolute,
-				Height = this.microButtonHeight,
+				Height = this.MicroButtonHeight,
 				Width = this.microButtonWidth
 			};
 

MatterControlLib/PartPreviewWindow/NewTabButton.cs

@@ -28,7 +28,9 @@ either expressed or implied, of the FreeBSD Project.
 */
 
 using MatterHackers.Agg;
+using MatterHackers.Agg.Image;
 using MatterHackers.Agg.UI;
+using MatterHackers.MatterControl.CustomWidgets;
 
 namespace MatterHackers.MatterControl.PartPreviewWindow
 {
@@ -56,4 +58,30 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 			base.OnDraw(graphics2D);
 		}
 	}
+
+	public class NewTabButton : GuiWidget
+	{
+		private ThemeConfig theme;
+
+		public NewTabButton(ImageBuffer imageBuffer, ThemeConfig theme)
+		{
+			this.HAnchor = HAnchor.Fit;
+			this.VAnchor = VAnchor.Center;
+			this.theme = theme;
+
+			IconButton = new IconButton(imageBuffer, theme)
+			{
+				HAnchor = HAnchor.Left,
+				Height = theme.MicroButtonHeight,
+				Width = theme.MicroButtonHeight,
+				Name = "Create New",
+			};
+
+			this.AddChild(IconButton);
+		}
+
+		public ITab LastTab { get; set; }
+
+		public IconButton IconButton { get; }
+	}
 }

MatterControlLib/PartPreviewWindow/PartPreviewContent.cs

@@ -49,6 +49,8 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 		private ChromeTab libraryTab;
 		private ChromeTab storeTab;
 
+		private int partCount = 0;
+
 		public PartPreviewContent(ThemeConfig theme)
 			: base(FlowDirection.TopToBottom)
 		{
@@ -70,6 +72,33 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 				Border = new BorderDouble(left: 1),
 			};
 
+			tabControl.PlusClicked += (s, e) =>
+			{
+				UiThread.RunOnIdle(async () =>
+				{
+					var partHistory = ApplicationController.Instance.Library.PartHistory;
+
+					var workspace = new BedConfig(partHistory);
+					await workspace.LoadContent(
+						new EditContext()
+						{
+							ContentStore = ApplicationController.Instance.Library.PartHistory,
+							SourceItem = partHistory.NewPlatingItem()
+						});
+
+					ApplicationController.Instance.Workspaces.Add(workspace);
+
+					var partID = partCount;
+
+					var newTab = this.CreatePartTab(
+						"New Design".Localize() + (partCount == 0 ?  "" : $" ({partCount++})"), workspace, theme);
+
+					tabControl.ActiveTab = newTab;
+
+					partCount++;
+				});
+			};
+
 			tabControl.ActiveTabChanged += (s, e) =>
 			{
 				if (this.tabControl.ActiveTab?.TabContent is PartTabPage tabPage)

MatterControlLib/PartPreviewWindow/Tabs.cs

@@ -32,6 +32,7 @@ using System.Collections.Generic;
 using System.Linq;
 using MatterHackers.Agg;
 using MatterHackers.Agg.Image;
+using MatterHackers.Agg.Platform;
 using MatterHackers.Agg.UI;
 using MatterHackers.Agg.VertexSource;
 using MatterHackers.Localizations;
@@ -225,6 +226,8 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 
 		private GuiWidget leadingTabAdornment;
 
+		public event EventHandler PlusClicked;
+
 		public ChromeTabs(GuiWidget rightAnchorItem, ThemeConfig theme)
 			: base(theme, rightAnchorItem)
 		{
@@ -243,10 +246,22 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 			tabTrailer = new TabTrailer(this, theme)
 			{
 				VAnchor = VAnchor.Bottom,
-				MinimumSize = new Vector2(16, theme.TabButtonHeight),
+				MinimumSize = new Vector2(8, theme.TabButtonHeight),
 			};
 
 			this.TabBar.ActionArea.AddChild(tabTrailer);
+
+			var plusTabButton = new NewTabButton(AggContext.StaticData.LoadIcon("fa-plus_12.png", theme.InvertIcons), theme)
+			{
+				Height = 20,
+			};
+
+			plusTabButton.IconButton.Click += (s, e) =>
+			{
+				this.PlusClicked?.Invoke(this, null);
+			};
+
+			this.TabBar.ActionArea.AddChild(plusTabButton);
 		}
 
 		public override void AddTab(GuiWidget tabWidget, int tabIndex = -1)