C# Application to Create and Recognize Mouse Gestures (.NET)

using System;
using System.IO;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Drawing2D;


namespace MouseGesture
{
	#region GesturesManagementForm class
	//This class allows to create/remove gestures and creating training set
	public class GesturesManagementForm : System.Windows.Forms.Form
	{
		#region Visual objects
		private System.Windows.Forms.ListBox KnownGesturesList;
		private System.Windows.Forms.GroupBox KnownGesturesGroup;
		private System.Windows.Forms.GroupBox GesturePreviewGroup;
		private System.Windows.Forms.Button RemoveGestureButton;
		private System.Windows.Forms.Button CreateGestureButton;
		private System.ComponentModel.Container components = null;
		private TransparentPanel m_PreviewPanel;
		private System.Windows.Forms.Button Cancel;
		private System.Windows.Forms.Button CreateTrainingSet;
		#endregion

		#region Private members
		private MainBoard m_MainBoard;
		#endregion

		#region Contructor
		public GesturesManagementForm(MainBoard board)
		{
			this.m_MainBoard=board;
			this.InitializeComponent();
			this.CustomInitialize();
			this.LoadKnownGesturesList();
			this.LinkHandlers();
		}
		#endregion

		#region Dispose function
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}
		#endregion

		#region Linking handlers
		private void LinkHandlers()
		{
			this.KnownGesturesList.SelectedIndexChanged+=new EventHandler(this.OnListSelectionChanged);
			this.RemoveGestureButton.Click+=new EventHandler(this.OnRemoveGesture);
			this.CreateGestureButton.Click+=new EventHandler(this.OnCreateGesture);
			this.Cancel.Click+=new EventHandler(this.OnCancel);
			this.CreateTrainingSet.Click+=new EventHandler(this.OnCreateTrainingSet);
		}
		#endregion
		
		#region Event handlers

		#region OnListSelectionChanged handler
		//This function is a handler to selected index changing in the gestures ListBox
		private void OnListSelectionChanged(object sender, EventArgs e)
		{
			//Checking if index is valid
			if(this.KnownGesturesList.SelectedIndex!=-1)
			{
				//Chek training set created for gesture
				if(((Gesture)this.m_MainBoard.KnownGestures[this.KnownGesturesList.SelectedIndex]).TrainingSetCreated)
				{
					//Check if trained (if trained with training set: panel is green;
					//if not trained with training set panel is oprange
					if(((Gesture)this.m_MainBoard.KnownGestures[this.KnownGesturesList.SelectedIndex]).Trained)
						this.m_PreviewPanel.BaseColor=Color.Green;
					else
						this.m_PreviewPanel.BaseColor=Color.Orange;
				}
				else
				{
					//I gesture has no training set, check if it's trained, if so, panel is blue,
					//otherwise, panel is red
					if(((Gesture)this.m_MainBoard.KnownGestures[this.KnownGesturesList.SelectedIndex]).Trained)
						this.m_PreviewPanel.BaseColor=Color.Blue;
					else
						this.m_PreviewPanel.BaseColor=Color.Red;
				}

				//Showing preview and enabling buttons
				this.m_PreviewPanel.InsertNewGesture(((Gesture)this.m_MainBoard.KnownGestures[this.KnownGesturesList.SelectedIndex]).Points);
				this.RemoveGestureButton.Enabled=true;
				this.CreateTrainingSet.Enabled=true;
			}
			else
			{
				//If index is not valid, some buttones are disabled
				this.RemoveGestureButton.Enabled=false;
				this.CreateTrainingSet.Enabled=false;
			}
		}
		#endregion

		#region OnRemoveGesture handler
		private void OnRemoveGesture(object sender, EventArgs e)
		{
			//Checks index
			if(this.KnownGesturesList.SelectedIndex!=-1)
			{
				//Store file paths
				int Index=this.KnownGesturesList.SelectedIndex;
				string Path=((Gesture)this.m_MainBoard.KnownGestures[Index]).FileFullName;
				string NetPath=((Gesture)this.m_MainBoard.KnownGestures[Index]).NetFullName;
				string TrainingSetPath=((Gesture)this.m_MainBoard.KnownGestures[Index]).TrainingSetFullName;

				//Showing a confirm message box
				if(MessageBox.Show("Do you want to delete \'"+Path+"\' and all related files?","Attention!",MessageBoxButtons.YesNo,MessageBoxIcon.Question,MessageBoxDefaultButton.Button2)==DialogResult.Yes)
				{
					if(File.Exists(Path))
					{
						try
						{
							File.Delete(Path);
						}
						catch
						{
							MessageBox.Show("Could not delete \'"+Path+"\'!","Error!",MessageBoxButtons.OK,MessageBoxIcon.Error);
						}
					}

					if(((Gesture)this.m_MainBoard.KnownGestures[Index]).Trained)
					{
						if(File.Exists(NetPath))
						{
							try
							{
								File.Delete(NetPath);
							}
							catch
							{
								MessageBox.Show("Could not delete \'"+NetPath+"\'!","Error!",MessageBoxButtons.OK,MessageBoxIcon.Error);
							}
						}
					}

					if(((Gesture)this.m_MainBoard.KnownGestures[Index]).TrainingSetCreated)
					{
						if(File.Exists(TrainingSetPath))
						{
							try
							{
								File.Delete(TrainingSetPath);
							}
							catch
							{
								MessageBox.Show("Could not delete \'"+TrainingSetPath+"\'!","Error!",MessageBoxButtons.OK,MessageBoxIcon.Error);
							}
						}
					}
				}

				//Remove from list
				this.m_MainBoard.KnownGestures.RemoveAt(Index);
				//Remove gesture
				this.KnownGesturesList.Items.RemoveAt(Index);
				//Change selected index
				this.KnownGesturesList.SelectedIndex=-1;
				//Reset preview panel color
				this.m_PreviewPanel.BaseColor=Color.Gray;
				//Clear preview panel
				this.m_PreviewPanel.ClearPanel();
			}
		}
		#endregion

		#region OnCreateGesture handler
		//Starts gesture creation
		private void OnCreateGesture(object sender, EventArgs e)
		{
			//Clear all panels
			this.m_MainBoard.ClearAll();
			//Enable main form to start acquiring
			this.m_MainBoard.Parent.Enabled=true;
			this.Visible=false;
			this.Enabled=false;
			this.m_MainBoard.CreateGesture();
		}
		#endregion

		#region OnCreateTrainingSet handler
		private void OnCreateTrainingSet(object sender, EventArgs e)
		{
			//Check index
			if(this.KnownGesturesList.SelectedIndex!=-1)
			{
				//Shows training set form
				this.Visible=false;
				this.Enabled=false;
				CreateTrainingSetForm TrainingForm=new CreateTrainingSetForm(this.m_MainBoard, this.KnownGesturesList.SelectedIndex);
				TrainingForm.Closed+= new EventHandler(this.OnCloseCreateTrainingSetForm);
				TrainingForm.TrainingSetCreatedEvent+=new MouseGesture.CreateTrainingSetForm.TrainingSetCreatedDelegate(this.OnTrainingSetCreated);
				TrainingForm.ShowDialog();
			}
		}
		#endregion

		#region OnCloseCreateTrainingSetForm handler
		private void OnCloseCreateTrainingSetForm(object sender, EventArgs e)
		{
			//This form is re-enabled when training set is created
			this.Visible=true;
			this.Enabled=true;			
		}
		#endregion

		#region OnCancel handler
		private void OnCancel(object sender, EventArgs e)
		{
			this.Close();
		}
		#endregion

		#region OnTrainingSetCreated handler
		private void OnTrainingSetCreated()
		{
			//If training set created for selected gesture, refresh preview panel
			if(this.KnownGesturesList.SelectedIndex!=-1)
			{
				if(((Gesture)this.m_MainBoard.KnownGestures[this.KnownGesturesList.SelectedIndex]).Trained)
					this.m_PreviewPanel.BaseColor=Color.Green;
				else
					this.m_PreviewPanel.BaseColor=Color.Orange;
			}
		}
		#endregion

		#endregion

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(GesturesManagementForm));
			this.KnownGesturesGroup = new System.Windows.Forms.GroupBox();
			this.KnownGesturesList = new System.Windows.Forms.ListBox();
			this.RemoveGestureButton = new System.Windows.Forms.Button();
			this.GesturePreviewGroup = new System.Windows.Forms.GroupBox();
			this.CreateGestureButton = new System.Windows.Forms.Button();
			this.Cancel = new System.Windows.Forms.Button();
			this.CreateTrainingSet = new System.Windows.Forms.Button();
			this.KnownGesturesGroup.SuspendLayout();
			this.SuspendLayout();
			// 
			// KnownGesturesGroup
			// 
			this.KnownGesturesGroup.Controls.Add(this.KnownGesturesList);
			this.KnownGesturesGroup.Location = new System.Drawing.Point(16, 8);
			this.KnownGesturesGroup.Name = "KnownGesturesGroup";
			this.KnownGesturesGroup.Size = new System.Drawing.Size(200, 273);
			this.KnownGesturesGroup.TabIndex = 1;
			this.KnownGesturesGroup.TabStop = false;
			this.KnownGesturesGroup.Text = "Known gestures:";
			// 
			// KnownGesturesList
			// 
			this.KnownGesturesList.DisplayMember = "string";
			this.KnownGesturesList.Location = new System.Drawing.Point(8, 24);
			this.KnownGesturesList.Name = "KnownGesturesList";
			this.KnownGesturesList.Size = new System.Drawing.Size(184, 238);
			this.KnownGesturesList.TabIndex = 4;
			this.KnownGesturesList.ValueMember = "string";
			// 
			// RemoveGestureButton
			// 
			this.RemoveGestureButton.Enabled = false;
			this.RemoveGestureButton.Location = new System.Drawing.Point(224, 224);
			this.RemoveGestureButton.Name = "RemoveGestureButton";
			this.RemoveGestureButton.Size = new System.Drawing.Size(120, 24);
			this.RemoveGestureButton.TabIndex = 2;
			this.RemoveGestureButton.Text = "&Remove gesture";
			// 
			// GesturePreviewGroup
			// 
			this.GesturePreviewGroup.Location = new System.Drawing.Point(224, 8);
			this.GesturePreviewGroup.Name = "GesturePreviewGroup";
			this.GesturePreviewGroup.Size = new System.Drawing.Size(120, 136);
			this.GesturePreviewGroup.TabIndex = 4;
			this.GesturePreviewGroup.TabStop = false;
			this.GesturePreviewGroup.Text = "Gesture preview:";
			// 
			// CreateGestureButton
			// 
			this.CreateGestureButton.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.CreateGestureButton.Location = new System.Drawing.Point(224, 160);
			this.CreateGestureButton.Name = "CreateGestureButton";
			this.CreateGestureButton.Size = new System.Drawing.Size(120, 24);
			this.CreateGestureButton.TabIndex = 0;
			this.CreateGestureButton.Text = "Create &gesture";
			// 
			// Cancel
			// 
			this.Cancel.Location = new System.Drawing.Point(224, 256);
			this.Cancel.Name = "Cancel";
			this.Cancel.Size = new System.Drawing.Size(120, 24);
			this.Cancel.TabIndex = 3;
			this.Cancel.Text = "&Cancel";
			// 
			// CreateTrainingSet
			// 
			this.CreateTrainingSet.Enabled = false;
			this.CreateTrainingSet.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.CreateTrainingSet.Location = new System.Drawing.Point(224, 192);
			this.CreateTrainingSet.Name = "CreateTrainingSet";
			this.CreateTrainingSet.Size = new System.Drawing.Size(120, 24);
			this.CreateTrainingSet.TabIndex = 1;
			this.CreateTrainingSet.Text = "Create &training set";
			// 
			// GesturesManagementForm
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(354, 288);
			this.Controls.Add(this.CreateTrainingSet);
			this.Controls.Add(this.Cancel);
			this.Controls.Add(this.CreateGestureButton);
			this.Controls.Add(this.GesturePreviewGroup);
			this.Controls.Add(this.RemoveGestureButton);
			this.Controls.Add(this.KnownGesturesGroup);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
			this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "GesturesManagementForm";
			this.ShowInTaskbar = false;
			this.Text = "Gesture management";
			this.TopMost = true;
			this.KnownGesturesGroup.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		#region Custom Inizialization code
		private void CustomInitialize()
		{
			this.m_PreviewPanel=new TransparentPanel();
			this.GesturePreviewGroup.Controls.Add(this.m_PreviewPanel);
			this.m_PreviewPanel.SetBounds(8,24,100,100);
			this.m_PreviewPanel.Parent=this.GesturePreviewGroup;
			this.m_PreviewPanel.Show();
		}
		#endregion

		#region Gesture list management
		//Loads gestures adding names to ListBox
		private void LoadKnownGesturesList()
		{
			for(int i=0; i<this.m_MainBoard.KnownGestures.Count; i++)
			{
				this.KnownGesturesList.Items.Add(((Gesture)this.m_MainBoard.KnownGestures[i]).Name);
			}		
		}

		//Refresh items in the ListBox
		public void RefreshGestureList()
		{
			this.KnownGesturesList.Items.Clear();
			this.LoadKnownGesturesList();
			this.Invalidate();
		}
		#endregion
	}
	#endregion
}