/*
 * Greenshot - a free and open source screenshot tool
 * Copyright (C) 2007-2016 Thomas Braun, Jens Klingen, Robin Krom
 * 
 * For more information see: http://getgreenshot.org/
 * The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 1 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
using System;
using System.Runtime.Serialization;

using Greenshot.Drawing.Fields;
using Greenshot.Drawing.Filters;
using GreenshotPlugin.Interfaces.Drawing;

namespace Greenshot.Drawing {
	/// <summary>
	/// Description of ObfuscateContainer.
	/// </summary>
	[Serializable] 
	public class HighlightContainer : FilterContainer {
		public HighlightContainer(Surface parent) : base(parent) {
			Init();
		}

		/// <summary>
		/// Use settings from base, extend with our own field
		/// </summary>
		protected override void InitializeFields() {
			base.InitializeFields();
			AddField(GetType(), FieldType.PREPARED_FILTER_HIGHLIGHT, PreparedFilter.TEXT_HIGHTLIGHT);
		}

		protected override void OnDeserialized(StreamingContext context)
		{
			Init();
		}
		
		private void Init() {
			FieldChanged += HighlightContainer_OnFieldChanged;
			ConfigurePreparedFilters();
		}		
		
		protected void HighlightContainer_OnFieldChanged(object sender, FieldChangedEventArgs e) {
			if (!sender.Equals(this)) {
				return;
			}
			if (Equals(e.Field.FieldType, FieldType.PREPARED_FILTER_HIGHLIGHT)) {
				ConfigurePreparedFilters();
			}
		}

		private void ConfigurePreparedFilters() {
			PreparedFilter preset = (PreparedFilter)GetFieldValue(FieldType.PREPARED_FILTER_HIGHLIGHT);
			while(Filters.Count>0) {
				Remove(Filters[0]);
			}
			switch(preset) {
				case PreparedFilter.TEXT_HIGHTLIGHT:
					Add(new HighlightFilter(this));
					break;
				case PreparedFilter.AREA_HIGHLIGHT:
					var brightnessFilter = new BrightnessFilter(this)
					{
						Invert = true
					};
					Add(brightnessFilter);
					var blurFilter = new BlurFilter(this)
					{
						Invert = true
					};
					Add(blurFilter);
					break;
				case PreparedFilter.GRAYSCALE:
					AbstractFilter f = new GrayscaleFilter(this);
					f.Invert = true;
					Add(f);
					break;
				case PreparedFilter.MAGNIFICATION:
					Add(new MagnifierFilter(this));
					break;
			}
		}
	}
}