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

namespace Greenshot.Controls {
	/// <summary>
	/// Description of ColorButton.
	/// </summary>
	public 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)
			{
				return;
			}
			if (colorDialog.Color.Equals(SelectedColor))
			{
				return;
			}
			SelectedColor = colorDialog.Color;
			PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("SelectedColor"));
		}
	}
}