/*
 * 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 GreenshotPlugin.Controls;
using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

namespace Greenshot.Controls
{
    /// <summary>
    /// Description of ColorButton.
    /// </summary>
    internal class ColorButton : Button, IGreenshotLanguageBindable
    {
        public event PropertyChangedEventHandler PropertyChanged;
        private Color selectedColor = Color.White;

        [Category("Greenshot"), DefaultValue(null), Description("Specifies key of the language file to use when displaying the text.")]
        public string LanguageKey
        {
            get;
            set;
        }

        public ColorButton()
        {
            Click += ColorButtonClick;
        }

        public Color SelectedColor
        {
            get
            {
                return selectedColor;
            }
            set
            {
                selectedColor = value;

                Brush brush;
                if (value != Color.Transparent)
                {
                    brush = new SolidBrush(value);
                }
                else
                {
                    brush = new HatchBrush(HatchStyle.Percent50, Color.White, Color.Gray);
                }

                if (Image != null)
                {
                    using (Graphics graphics = Graphics.FromImage(Image))
                    {
                        graphics.FillRectangle(brush, new Rectangle(4, 17, 16, 3));
                    }
                }

                // cleanup GDI Object
                brush.Dispose();
                Invalidate();
            }
        }

        private void ColorButtonClick(object sender, EventArgs e)
        {
            ColorDialog colorDialog = ColorDialog.GetInstance();
            colorDialog.Color = SelectedColor;
            // Using the parent to make sure the dialog doesn't show on another window
            colorDialog.ShowDialog(Parent.Parent);
            if (colorDialog.DialogResult != DialogResult.Cancel)
            {
                if (!colorDialog.Color.Equals(SelectedColor))
                {
                    SelectedColor = colorDialog.Color;
                    if (PropertyChanged != null)
                    {
                        PropertyChanged(this, new PropertyChangedEventArgs("SelectedColor"));
                    }
                }
            }
        }
    }
}