using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace JYControl
{
	/// <summary>
	/// Class for the Led control.
	/// </summary>
	public partial class LBLed : LBIndustrialCtrlBase
	{
		#region (* Enumeratives *)
		public enum LedState
		{
			Off = 0,
			On,
			Blink,
		}

		public enum LedLabelPosition
		{
			Left = 0,
			Top,
			Right,
			Bottom,
		}

		public enum LedStyle
		{
			Circular = 0,
			Rectangular,
		}

		#endregion

		#region (* Properties variables *)
		private Color ledColor;
		private LedState state;
		private LedStyle style;
		private LedLabelPosition labelPosition;
		private String label = "Led";
		private SizeF ledSize;
		private int blinkInterval = 500;
		#endregion

		#region (* Class variables *)
		//private Timer tmrBlink;
		private bool blinkIsOn = false;
		#endregion

		#region (* Constructor *)
		public LBLed()
		{
			InitializeComponent();

			this.Size = new Size(20, 20);
			this.ledColor = Color.Red;
			this.state = LBLed.LedState.Off;
			this.style = LBLed.LedStyle.Circular;
			this.blinkIsOn = false;
			this.ledSize = new SizeF(10F, 10F);
			this.labelPosition = LedLabelPosition.Top;
		}
		#endregion

		#region (* Properties *)
		[
			Category("Led"),
			Description("改变LED灯样式")
		]
		public LedStyle Style
		{
			get { return style; }
			set
			{
				style = value;
				this.CalculateDimensions();
			}
		}
		[
			Category("Led"),
			Description("改变LED灯颜色")
		]
		public Color LedColor
		{
			get { return ledColor; }
			set
			{
				ledColor = value;
				Invalidate();
			}
		}


		[
			Category("Led"),
			Description("改变LED灯状态")
		]
		public LedState State
		{
			get { return state; }
			set
			{
				state = value;
				if (state == LedState.Blink)
				{
					this.blinkIsOn = true;
					this.tmrBlink.Interval = this.BlinkInterval;
					this.tmrBlink.Start();
				}
				else
				{
					this.blinkIsOn = true;
					this.tmrBlink.Stop();
				}

				Invalidate();
			}
		}


		[
			Category("Led"),
			Description("Size of the led")
		]
		public SizeF LedSize
		{
			get { return this.ledSize; }
			set
			{
				this.ledSize = value;
				this.CalculateDimensions();
				Invalidate();
			}
		}


		[
			Category("Led"),
			Description("Label of the led")
		]
		public String Label
		{
			get { return this.label; }
			set
			{
				this.label = value;
				Invalidate();
			}
		}


		[
			Category("Led"),
			Description("Position of the label of the led")
		]
		public LedLabelPosition LabelPosition
		{
			get { return this.labelPosition; }
			set
			{
				this.labelPosition = value;
				this.CalculateDimensions();
				Invalidate();
			}
		}


		[
			Category("Led"),
			Description("Interval for the blink state of the led")
		]
		public int BlinkInterval
		{
			get { return this.blinkInterval; }
			set { this.blinkInterval = value; }
		}

		[Browsable(false)]
		public bool BlinkIsOn
		{
			get { return this.blinkIsOn; }
		}
		#endregion

		#region (* Events delegates *)
		void OnBlink(object sender, EventArgs e)
		{
			if (this.State == LedState.Blink)
			{
				if (this.blinkIsOn == false)
					this.blinkIsOn = true;
				else
					this.blinkIsOn = false;

				this.Invalidate();
			}
		}
		#endregion

		#region (* Overrided methods *)
		protected override ILBRenderer CreateDefaultRenderer()
		{
			return new LBLedRenderer();
		}
		#endregion
	}
}