Fixed most adorner related drawing issues, need to test a few more (freehand)

Greenshot/Drawing/Adorners/AbstractAdorner.cs

@@ -0,0 +1,147 @@
+/*
+ * 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.Plugin.Drawing;
+using Greenshot.Plugin.Drawing.Adorners;
+using System.Drawing;
+using System.Drawing.Drawing2D;
+using System.Windows.Forms;
+using System;
+
+namespace Greenshot.Drawing.Adorners
+{
+	public class AbstractAdorner : IAdorner
+	{
+		public virtual EditStatus EditStatus { get; protected set; } = EditStatus.IDLE;
+
+		protected Size _size = new Size(4, 4);
+
+		public AbstractAdorner(IDrawableContainer owner)
+		{
+			Owner = owner;
+		}
+
+		/// <summary>
+		/// Returns the cursor for when the mouse is over the adorner
+		/// </summary>
+		public virtual Cursor Cursor
+		{
+			get
+			{
+				return Cursors.SizeAll;
+			}
+		}
+
+		public virtual IDrawableContainer Owner
+		{
+			get;
+			set;
+		}
+
+		/// <summary>
+		/// Test if the point is inside the adorner
+		/// </summary>
+		/// <param name="point"></param>
+		/// <returns></returns>
+		public virtual bool HitTest(Point point)
+		{
+			Rectangle hitBounds = Bounds;
+			hitBounds.Inflate(3, 3);
+			return hitBounds.Contains(point);
+		}
+
+		/// <summary>
+		/// Handle the mouse down
+		/// </summary>
+		/// <param name="sender"></param>
+		/// <param name="mouseEventArgs"></param>
+		public virtual void MouseDown(object sender, MouseEventArgs mouseEventArgs)
+		{
+		}
+
+		/// <summary>
+		/// Handle the mouse move
+		/// </summary>
+		/// <param name="sender"></param>
+		/// <param name="mouseEventArgs"></param>
+		public virtual void MouseMove(object sender, MouseEventArgs mouseEventArgs)
+		{
+		}
+
+		/// <summary>
+		/// Handle the mouse up
+		/// </summary>
+		/// <param name="sender"></param>
+		/// <param name="mouseEventArgs"></param>
+		public virtual void MouseUp(object sender, MouseEventArgs mouseEventArgs)
+		{
+			EditStatus = EditStatus.IDLE;
+		}
+
+		/// <summary>
+		/// Return the location of the adorner
+		/// </summary>
+		public virtual Point Location
+		{
+			get;
+			set;
+		}
+
+		/// <summary>
+		/// Return the bounds of the Adorner
+		/// </summary>
+		public virtual Rectangle Bounds
+		{
+			get
+			{
+				Point location = Location;
+				return new Rectangle(location.X - (_size.Width / 2), location.Y - (_size.Height / 2), _size.Width, _size.Height);
+			}
+		}
+
+		/// <summary>
+		/// The adorner is active if the edit status is not idle or undrawn
+		/// </summary>
+		public virtual bool IsActive
+		{
+			get
+			{
+				return EditStatus != EditStatus.IDLE && EditStatus != EditStatus.UNDRAWN;
+			}
+		}
+
+		/// <summary>
+		/// Draw the adorner
+		/// </summary>
+		/// <param name="paintEventArgs">PaintEventArgs</param>
+		public virtual void Paint(PaintEventArgs paintEventArgs)
+		{
+		}
+
+		/// <summary>
+		/// We ignore the Transform, as the coordinates are directly bound to those of the owner
+		/// </summary>
+		/// <param name="matrix"></param>
+		public virtual void Transform(Matrix matrix)
+		{
+		}
+	}
+}