mattercontrol/ControlElements/DropDownMenuFactory.cs

using System;
using MatterHackers.Agg;
using MatterHackers.Agg.UI;
using MatterHackers.MatterControl.DataStorage;
using MatterHackers.Agg.VertexSource;

namespace MatterHackers.MatterControl
{
	public class DropDownButtonBase : GuiWidget
	{

		RGBA_Bytes fillColor;
		RGBA_Bytes borderColor;


		double borderWidth;

		//Set Defaults
		public DropDownButtonBase(string label, RGBA_Bytes fillColor, RGBA_Bytes borderColor, RGBA_Bytes textColor, double borderWidth, BorderDouble margin, int fontSize = 12, FlowDirection flowDirection = FlowDirection.LeftToRight, double height = 40)
		{
			FlowLayoutWidget container = new FlowLayoutWidget ();
			container.Padding = new BorderDouble (0);
			container.Margin = new BorderDouble (0);
			if(label != "")
			{
				TextWidget text = new TextWidget (label ,pointSize: fontSize, textColor: textColor);
				text.VAnchor = VAnchor.ParentCenter;
				text.Padding = new BorderDouble (0, 0);
				container.AddChild (text);
			}

			GuiWidget arrow = new GuiWidget (20, height);
			arrow.VAnchor = VAnchor.ParentCenter;
			container.AddChild (arrow);
			this.AddChild (container);

			this.Padding = new BorderDouble (0, 0);
			this.fillColor = fillColor;
			this.borderColor = borderColor;
			this.borderWidth = borderWidth;
			this.HAnchor = HAnchor.FitToChildren;
		}

		public override void OnDraw (Graphics2D graphics2D)
		{
			DrawBorder (graphics2D);
			DrawBackground (graphics2D);

			base.OnDraw (graphics2D);
		}

		private void DrawBorder(Graphics2D graphics2D)
		{
			if (borderColor.Alpha0To255 > 0)
			{
				RectangleDouble boarderRectangle = LocalBounds;

				RoundedRect rectBorder = new RoundedRect(boarderRectangle,0);

				graphics2D.Render(new Stroke(rectBorder, borderWidth), borderColor);
			}
		}

		private void DrawBackground(Graphics2D graphics2D)
		{
			if (this.fillColor.Alpha0To255 > 0)
			{
				RectangleDouble insideBounds = LocalBounds;
				insideBounds.Inflate(-this.borderWidth);
				RoundedRect rectInside = new RoundedRect(insideBounds,0);

				graphics2D.Render(rectInside, this.fillColor);
			}
		}

	}


	public class DropDownMenuFactory
	{
		public BorderDouble Margin = new BorderDouble(0, 0);
		public RGBA_Bytes normalFillColor = new RGBA_Bytes(0, 0, 0, 0);
		public RGBA_Bytes hoverFillColor = new RGBA_Bytes(0, 0, 0, 50);
		public RGBA_Bytes pressedFillColor = new RGBA_Bytes(0, 0, 0, 0);
		public RGBA_Bytes disabledFillColor = new RGBA_Bytes(255, 255, 255, 50);

		public RGBA_Bytes normalBorderColor = new RGBA_Bytes(255, 255, 255, 0);
		public RGBA_Bytes hoverBorderColor = new RGBA_Bytes(0, 0, 0, 0);
		public RGBA_Bytes pressedBorderColor = new RGBA_Bytes(0, 0, 0, 0);
		public RGBA_Bytes disabledBorderColor = new RGBA_Bytes(0, 0, 0, 0);
		public RGBA_Bytes checkedBorderColor = new RGBA_Bytes(255, 255, 255, 0);

		public RGBA_Bytes normalTextColor = ActiveTheme.Instance.PrimaryTextColor;
		public RGBA_Bytes hoverTextColor = ActiveTheme.Instance.PrimaryTextColor;
		public RGBA_Bytes pressedTextColor = ActiveTheme.Instance.PrimaryTextColor;
		public RGBA_Bytes disabledTextColor = ActiveTheme.Instance.PrimaryTextColor;

		public int fontSize = 12;
		public double borderWidth = 1;

		public double FixedWidth = 10;
		public double FixedHeight = 30;

		public DropDownMenuFactory ()
		{

		}



		public DynamicDropDownMenu Generate(string label = "", TupleList<string,Func<bool>> optionList = null, Direction direction = Direction.Down)
		{

			DynamicDropDownMenu menu = new DynamicDropDownMenu (label, CreateButtonViewStates(label),direction);
			menu.VAnchor = VAnchor.ParentCenter;
			menu.HAnchor = HAnchor.FitToChildren;
			menu.MenuAsWideAsItems = false;
			menu.AlignToRightEdge = true;
			menu.NormalColor = normalFillColor;
			menu.HoverColor = hoverFillColor;
			menu.BorderColor = normalBorderColor;
			menu.BackgroundColor = menu.NormalColor;

			if(optionList != null)
			{
				foreach(Tuple<string,Func<bool>> option in optionList)
				{
					menu.addItem (option.Item1, option.Item2);
				}
			}

			return menu;
		}

		private ButtonViewStates CreateButtonViewStates(string label)
		{
			//Create the multi-state button view
			ButtonViewStates buttonViewWidget = new ButtonViewStates(
				new DropDownButtonBase(label, normalFillColor, normalBorderColor, normalTextColor, borderWidth, Margin,  fontSize, FlowDirection.LeftToRight,  FixedHeight),
                new DropDownButtonBase(label, hoverFillColor, hoverBorderColor, hoverTextColor, borderWidth, Margin, fontSize, FlowDirection.LeftToRight, FixedHeight),
                new DropDownButtonBase(label, pressedFillColor, pressedBorderColor, pressedTextColor, borderWidth, Margin, fontSize, FlowDirection.LeftToRight, FixedHeight),
                new DropDownButtonBase(label, disabledFillColor, disabledBorderColor, disabledTextColor, borderWidth, Margin, fontSize, FlowDirection.LeftToRight, FixedHeight)
			);

			buttonViewWidget.Padding = new BorderDouble (0, 0);

			return buttonViewWidget;
		}
	}
}