greenshot/Greenshot/Helpers/GuiRectangle.cs

/*
 * 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.Drawing;

namespace Greenshot.Helpers {
	/// <summary>
	/// Helper class for creating rectangles with positive dimensions, regardless of input coordinates
	/// </summary>
	public static class GuiRectangle {
	
		public static Rectangle GetGuiRectangle(int x, int y, int w, int h) {
			Rectangle rect = new Rectangle(x, y, w, h);
			MakeGuiRectangle(ref rect);
			return rect;
		}
		
		public static void MakeGuiRectangle(ref Rectangle rect) {
			if (rect.Width < 0) {
				rect.X += rect.Width;
				rect.Width = -rect.Width;
			}
			if (rect.Height < 0) {
				rect.Y += rect.Height;
				rect.Height = -rect.Height;
			}
		}
		
		public static RectangleF GetGuiRectangleF(float x, float y, float w, float h) {
			RectangleF rect = new RectangleF(x, y, w, h);
			MakeGuiRectangleF(ref rect);
			return rect;
		}
		
		public static void MakeGuiRectangleF(ref RectangleF rect) {
			if (rect.Width < 0) {
				rect.X += rect.Width;
				rect.Width = -rect.Width;
			}
			if (rect.Height < 0) {
				rect.Y += rect.Height;
				rect.Height = -rect.Height;
			}
		}
	}
}