using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Data;
using HeuristicLab.Optimization;
using HeuristicLab.Parameters;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;

namespace HeuristicLab.Analysis.FitnessLandscape.BoxCharts {

  [StorableClass]
  public class StringConstantBoxChartElementGenerator : EmptyBoxChartElementGenerator {

    public ValueParameter<StringValue> TextParameter {
      get { return (ValueParameter<StringValue>)Parameters["Text"]; }
    }
    public ValueParameter<IntValue> FontSizeParameter {
      get { return (ValueParameter<IntValue>) Parameters["FontSize"]; }
    }

    protected string Text { get { return TextParameter.Value.Value; } }
    protected int FontSize { get { return FontSizeParameter.Value.Value; }}

    #region Construction & Cloning
    [StorableConstructor]
    protected StringConstantBoxChartElementGenerator(bool deserializing) : base(deserializing) { }
    protected StringConstantBoxChartElementGenerator(StringConstantBoxChartElementGenerator original, Cloner cloner) : base(original, cloner) {
      RegisterEvents();
    }
    public StringConstantBoxChartElementGenerator() {
      Parameters.Add(new ValueParameter<StringValue>("Text", "The text to be rendered inside this element.", new StringValue("Text")));
      Parameters.Add(new ValueParameter<IntValue>("FontSize", "The font size to be used for the text.", new IntValue(11)));
      RegisterEvents();
      if (GetType() == typeof(StringConstantBoxChartElementGenerator))
        UpdateName();
    }
    public override IDeepCloneable Clone(Cloner cloner) {
      return new StringConstantBoxChartElementGenerator(this, cloner);
    }
    [StorableHook(HookType.AfterDeserialization)]
    private void AfterDeserialization() {
      RegisterEvents();
    }
    #endregion

    private void RegisterEvents() {
      TextParameter.ToStringChanged += new EventHandler(Parameters_Changed);
    }

    private void Parameters_Changed(object sender, EventArgs eventArgs) {
      UpdateName();
    }

    protected override string CalculateName() {
      return string.Format("{0} \"{1}\" ({2})", base.CalculateName(), Text, FontSize);
    }

    public override void Draw(IRun run, Graphics g) {
      using(var font = new Font("Helvetica", FontSize)) {
        var size = g.MeasureString(Text, font);
        g.DrawString(Text, font, Brushes.Black,
          g.ClipBounds.Left+(g.ClipBounds.Width - size.Width)/2,
          g.ClipBounds.Top+(g.ClipBounds.Height - size.Height)/2);
      }
    }
  }
}