QuickImage – Rev 1

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using System.Drawing;
using System.Windows.Forms;

namespace CraftSynth.ImageEditor
{
        /// <summary>
        /// PolyLine tool (a PolyLine is a series of connected straight lines where each line is drawn individually)
        /// </summary>
        internal class ToolPolyLine : ToolObject
        {
                public ToolPolyLine()
                {
                        Cursor = new Cursor(GetType(), "Pencil.cur");
                }

                private DrawPolyLine newPolyLine;
                private bool _drawingInProcess = false; // Set to true when drawing

                /// <summary>
                /// Left nouse button is pressed
                /// </summary>
                /// <param name="drawArea"></param>
                /// <param name="e"></param>
                public override void OnMouseDown(DrawArea drawArea, MouseEventArgs e)
                {
                        if (e.Button ==
                            MouseButtons.Right)
                        {
                                _drawingInProcess = false;
                                newPolyLine = null;
                        }
                        else
                        {
                                Point p = drawArea.BackTrackMouse(new Point(e.X, e.Y));
                                
                                        if (_drawingInProcess == false)
                                        {
                                                newPolyLine = new DrawPolyLine(p.X, p.Y, p.X + 1, p.Y + 1, drawArea.LineColor, drawArea.LineWidth, drawArea.PenType);
                                                newPolyLine.EndPoint = new Point(p.X + 1, p.Y + 1);
                                                AddNewObject(drawArea, newPolyLine);
                                                _drawingInProcess = true;
                                        }
                                        else
                                        {
                                                // Drawing is in process, so simply add a new point
                                                newPolyLine.AddPoint(p);
                                                newPolyLine.EndPoint = p;
                                        }
                                
                        }
                }

                /// <summary>
                /// Mouse move - resize new polygon
                /// </summary>
                /// <param name="drawArea"></param>
                /// <param name="e"></param>
                public override void OnMouseMove(DrawArea drawArea, MouseEventArgs e)
                {
                        drawArea.Cursor = Cursor;

                        if (e.Button !=
                            MouseButtons.Left)
                                return;

                        if (newPolyLine == null)
                                return; // precaution

                        Point point = drawArea.BackTrackMouse(new Point(e.X, e.Y));
                        // move last point
                        newPolyLine.MoveHandleTo(point, newPolyLine.HandleCount);
                        drawArea.Refresh();
                }

                #region Destruction
                private bool _disposed = false;

                protected override void Dispose(bool disposing)
                {
                        if (!this._disposed)
                        {
                                if (disposing)
                                {
                                        // Free any managed objects here. 
                                        if (this.newPolyLine != null)
                                        {
                                                this.newPolyLine.Dispose();
                                        }
                                }

                                // Free any unmanaged objects here. 
                                
                                this._disposed = true;
                        }
                        base.Dispose(disposing);
                }

                ~ToolPolyLine()
                {
                         this.Dispose(false);
                }
                #endregion
        }
}

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