/*
 * Greenshot - a free and open source screenshot tool
 * Copyright (C) 2007-2015 Thomas Braun, Jens Klingen, Robin Krom
 *
 * For more information see: http://getgreenshot.org/
 * The Greenshot project is hosted on Sourceforge: http://sourceforge.net/projects/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 Greenshot.Drawing.Fields;
using Greenshot.Drawing.Filters;
using System;
using System.Runtime.Serialization;

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);
        }

        [OnDeserialized]
        private 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 (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:
                    AbstractFilter bf = new BrightnessFilter(this);
                    bf.Invert = true;
                    Add(bf);
                    bf = new BlurFilter(this);
                    bf.Invert = true;
                    Add(bf);
                    break;
                case PreparedFilter.GRAYSCALE:
                    AbstractFilter f = new GrayscaleFilter(this);
                    f.Invert = true;
                    Add(f);
                    break;
                case PreparedFilter.MAGNIFICATION:
                    Add(new MagnifierFilter(this));
                    break;
            }
        }
    }
}