using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xna.Framework.Graphics;
using System.Xml;
using DW.UI;
using Microsoft.Xna.Framework;
using System.Diagnostics;
using DW.Data;

namespace DW.Stream
{
    /// <summary>
    /// Each camera represents the local viewport space inside the game window
    /// </summary>
    public class Camera
    {
        public Viewport viewport;
        public HUD hud;
        
        /// <summary>
        /// Each camera represents the local viewport space inside the window
        /// </summary>
        /// <param name="fileName">Location of the HUD associated with this pane</param>
        /// <param name="location">Local space viewport</param>
        public Camera(string fileName, Rectangle location)
        {
            viewport = new Viewport();
            X = location.X;
            Y = location.Y;
            Width = location.Width;
            Height = location.Height;

            try
            {
                XmlDocument reader = new XmlDocument();
                reader.Load(fileName);

                hud = new HUD(viewport);
                foreach (XmlNode node in reader.ChildNodes)
                {
                    if (node.Name == "HUDSettings")
                    {
                        hud.LoadScreenObjects(node);
                    }
                }
            }
            catch (Exception e)
            {
                System.Diagnostics.Debug.WriteLine("Error reading xml");
                throw e;
            }
        }

        /// <summary>
        /// Find the quadrant viewport for the individual HUDS
        /// </summary>
        /// <param name="rect">Local viewport</param>
        public void Resize(Rectangle rect)
        {
            // Set Size
            X = rect.X; Y = rect.Y;
            Width = rect.Width; Height = rect.Height;

            // Pass it along
            hud.Resize(rect);
        }
        /// <summary>
        /// Handles Update for the cameras and into the HUDs - other classes should
        /// use this for Update calls as well
        /// </summary>
        /// <param name="gameTimer">Passed down from engine, controls the HUD timer</param>
        /// <param name="gametime">Provides a snapshot of timing values</param>
        public void Update(Stopwatch gameTimer, GameTime gametime)
        {
            hud.Update(gameTimer, gametime);
        }

        /// <summary>
        /// Draws each camera and the args that belong to the camera
        /// </summary>
        public void Draw(GameTime gameTime, ObjectLibrary objLib)
        {
            objLib.Draw(gameTime);
            hud.Draw(Renderer.spriteBatch);
        }

        #region Dimensions
        /// <summary>
        /// Get/Set the pane's viewport height
        /// </summary>
        public int Height
        {
            get{return this.viewport.Height;}
            set{this.viewport.Height = value;}
        }
        /// <summary>
        /// Get/Set the pane's viewport width
        /// </summary>
        public int Width
        {
            get{return this.viewport.Width;}
            set{this.viewport.Width = value;}
        }
        /// <summary>
        /// Get/Set the pane's viewport x coordinate (top left corner is 0,0)
        /// </summary>
        public int X
        {
            get{return this.viewport.X;}
            set{this.viewport.X = value;}
        }
        /// <summary>
        /// Get/Set the pane's viewport y coordinate (top left corner is 0,0)
        /// </summary>
        public int Y
        {
            get{return this.viewport.Y;}
            set{this.viewport.Y = value;}
        }
        #endregion
    }
}