using System;
using System.Drawing;
using System.Windows.Forms;
using Microsoft.DirectX;
using Microsoft.DirectX.Direct3D;

namespace D3D_Device_Creation
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		// Declarations
		Device device = null;  // the rendering device
		Sprite background = null;
		Texture bg = null;

		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			this.Height = 400;
			this.Width = 300;
			this.Text = "Create Devices Tutorial";

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <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()
		{
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(528, 397);
			this.Name = "Form1";
			this.Text = "Form1";

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Form1 form = new Form1();

			if(!form.InitialzeGraphics())
			{
				MessageBox.Show("Could not initialze Direct3D");
			}
			form.Show();

			form.InitializeTextures();
			while(form.Created)
			{
				form.Render();
				Application.DoEvents();
			}

			Application.Exit();
		}

		private void Render()
		{
			if(device == null)
			{
				return;
			}

			// clear the back buffer to a blue color
			device.Clear(ClearFlags.Target, System.Drawing.Color.Blue, 1.0f, 0);
			Rectangle size;
			size = new Rectangle(0,0,300,400);
			// begin the scene
			device.BeginScene();

			// Render code here
			background.Begin(SpriteFlags.None);
			background.Draw2D(bg, Rectangle.Empty, size, new Point(0, 0), Color.White);
			background.End();
			// End the scene
			device.EndScene();
			device.Present();
		}

		public bool InitialzeGraphics()
		{
			try
			{
				// set up d3d stuff
				PresentParameters presentParams = new PresentParameters();
				presentParams.Windowed = true;
				presentParams.SwapEffect = SwapEffect.Discard;

				device = new Device(0, DeviceType.Hardware, this,
					CreateFlags.SoftwareVertexProcessing, presentParams);
				return true;
			}
			catch(DirectXException)
			{
				return false;
			}
		}

		public void InitializeTextures()
		{
			try
			{
				background = new Sprite(device);
				
				bg = TextureLoader.FromFile(device, Application.StartupPath + "\\background.bmp");
			}
			catch(DirectXException)
			{
				MessageBox.Show("Background could not be loaded.");
			}
		}
	}
}