using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace NeroFiddlesCOM.NET
{
	/// <summary>
	/// Summary description for NVAPIEstimateForm.
	/// </summary>
	public class NVAPIEstimateForm : System.Windows.Forms.Form, NeroVisionAPI.IProgressCallback
	{
		[DllImport("kernel32.dll", SetLastError=true)]
		static extern IntPtr GetModuleHandleA (string lpModuleName); 

		private bool m_bEstimate;
		private bool m_bShouldCancel;
		private double m_seconds;
		private bool m_bResult;
		private NeroVisionAPI.Project m_project;
		private NeroVisionAPI.INeroBurnContext m_pNeroBurnContext;

		private System.Windows.Forms.ProgressBar c_CurrentProgress;
		private System.Windows.Forms.ProgressBar c_TotalProgress;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label c_CurrentItem;
		private System.Windows.Forms.Label c_CurrentPercent;
		private System.Windows.Forms.Label c_TotalPercent;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Button c_Cancel;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public NVAPIEstimateForm()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#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()
		{
			this.c_CurrentProgress = new System.Windows.Forms.ProgressBar();
			this.c_TotalProgress = new System.Windows.Forms.ProgressBar();
			this.label1 = new System.Windows.Forms.Label();
			this.c_CurrentItem = new System.Windows.Forms.Label();
			this.c_CurrentPercent = new System.Windows.Forms.Label();
			this.c_TotalPercent = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.c_Cancel = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// c_CurrentProgress
			// 
			this.c_CurrentProgress.Location = new System.Drawing.Point(8, 40);
			this.c_CurrentProgress.Name = "c_CurrentProgress";
			this.c_CurrentProgress.Size = new System.Drawing.Size(352, 23);
			this.c_CurrentProgress.TabIndex = 3;
			// 
			// c_TotalProgress
			// 
			this.c_TotalProgress.Location = new System.Drawing.Point(8, 104);
			this.c_TotalProgress.Name = "c_TotalProgress";
			this.c_TotalProgress.Size = new System.Drawing.Size(352, 23);
			this.c_TotalProgress.TabIndex = 6;
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(8, 16);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(72, 16);
			this.label1.TabIndex = 0;
			this.label1.Text = "Current item:";
			// 
			// c_CurrentItem
			// 
			this.c_CurrentItem.Location = new System.Drawing.Point(96, 16);
			this.c_CurrentItem.Name = "c_CurrentItem";
			this.c_CurrentItem.Size = new System.Drawing.Size(200, 16);
			this.c_CurrentItem.TabIndex = 1;
			// 
			// c_CurrentPercent
			// 
			this.c_CurrentPercent.Location = new System.Drawing.Point(320, 16);
			this.c_CurrentPercent.Name = "c_CurrentPercent";
			this.c_CurrentPercent.Size = new System.Drawing.Size(40, 16);
			this.c_CurrentPercent.TabIndex = 2;
			this.c_CurrentPercent.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
			// 
			// c_TotalPercent
			// 
			this.c_TotalPercent.Location = new System.Drawing.Point(320, 80);
			this.c_TotalPercent.Name = "c_TotalPercent";
			this.c_TotalPercent.Size = new System.Drawing.Size(40, 16);
			this.c_TotalPercent.TabIndex = 5;
			this.c_TotalPercent.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(8, 80);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(80, 16);
			this.label2.TabIndex = 4;
			this.label2.Text = "Total progress:";
			// 
			// c_Cancel
			// 
			this.c_Cancel.Location = new System.Drawing.Point(144, 144);
			this.c_Cancel.Name = "c_Cancel";
			this.c_Cancel.TabIndex = 7;
			this.c_Cancel.Text = "Cancel";
			this.c_Cancel.Click += new System.EventHandler(this.c_Cancel_Click);
			// 
			// NVAPIEstimateForm
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(370, 176);
			this.Controls.Add(this.c_Cancel);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.c_CurrentProgress);
			this.Controls.Add(this.c_TotalProgress);
			this.Controls.Add(this.c_CurrentItem);
			this.Controls.Add(this.c_CurrentPercent);
			this.Controls.Add(this.c_TotalPercent);
			this.Controls.Add(this.label2);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
			this.MaximizeBox = false;
			this.Name = "NVAPIEstimateForm";
			this.ShowInTaskbar = false;
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
			this.Text = "NVAPIEstimateForm";
			this.ResumeLayout(false);

		}
		#endregion

		public void OnProgress(NeroVisionAPI.ProgressAction action, string itemname, double currentRemain, double currentTotal, float currentFraction, double totalRemain, double totalTotal, float totalFraction)
		{
			// This is a IProgressCallback method implementation.
			// We are called every once in a while to report progress.
			// 
			float currentPercent = currentFraction*100;
			float totalPercent = totalFraction*100;

			c_CurrentItem.Text = itemname;
			c_CurrentProgress.Value = (int) currentPercent;
			c_CurrentPercent.Text = currentPercent.ToString ("N0") + "%";
			c_TotalProgress.Value = (int) totalPercent;
			c_TotalPercent.Text = totalPercent.ToString ("N0") + "%";

			// We must process messages from a Windows message queue in order
			// for everything to repaint properly as well as for the Cancel
			// button to be able to perform.
			// 
			Application.DoEvents ();
		}

		public bool ShouldCancel ()
		{
			// This is a IProgressCallback method implementation.
			// We are called every once in a while to report cancelation.
			// 
			Application.DoEvents ();
			return m_bShouldCancel;
		}

		protected override void OnLoad(EventArgs e)
		{
			base.OnLoad (e);

			// Since both EstimateCreateNeroBurnContextTime and CreateNeroBurnContext
			// do not return until their work is done, we need to show our form
			// early and process messages to allow it to repaint. We are implementing
			// IProgressCallback so we will get notified of the total progress.
			// 
			m_bShouldCancel = false;
			this.Visible = true;
			Application.DoEvents ();

			m_bResult = false;

			if (m_bEstimate)
			{
				this.Text = "Estimating...";
				m_seconds = 0;
				m_bResult = m_project.EstimateCreateNeroBurnContextTime (this, out m_seconds);
			}
			else
			{
				this.Text = "Creating burn context...";
				m_pNeroBurnContext = null;
				m_bResult = m_project.CreateNeroBurnContext (GetModuleHandleA ("NeroAPI.dll"),
					this,
					out m_pNeroBurnContext);
			}

			// Once any of the two above methods returns, we are done, so we
			// need to manually close the form.
			// 
			this.Close ();
		}

		private void c_Cancel_Click(object sender, System.EventArgs e)
		{
			// When Cancel button is clicked, set the flag. This will
			// be returned in the IProgressCallback method.
			// 
			m_bShouldCancel = true;
		}

		public bool Estimate (System.Windows.Forms.IWin32Window owner, NeroVisionAPI.Project proj, out double seconds)
		{
			// Set the flag that tells that this is an estimation command.
			// Show the dialog and return the resulting seoconds value.
			// 
			m_bEstimate = true;
			m_project = proj;

			ShowDialog (owner);
			
			seconds = m_seconds;
			return m_bResult;
		}

		public bool CreateNeroBurnContext (System.Windows.Forms.IWin32Window owner, NeroVisionAPI.Project proj, out NeroVisionAPI.INeroBurnContext pNeroBurnContext)
		{
			// Set the flag that tells that this is a transcoding command.
			// Show the dialog and return the resulting INeroBurnContext.
			// 
			m_bEstimate = false;
			m_project = proj;

			ShowDialog (owner);
			
			pNeroBurnContext = m_pNeroBurnContext;
			return m_bResult;
		}
	}
}