// A very quick test to see how much my TV screen shows (or loses)

using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;
using Microsoft.Xna.Framework.Net;
using Microsoft.Xna.Framework.Storage;

namespace TestScreenSize
{
    public class Game1 : Microsoft.Xna.Framework.Game
    {
        GraphicsDeviceManager graphics;
        SpriteBatch spriteBatch;
        SpriteFont spriteFont;
        Texture2D textureWhite;
        GamePadState prevGamePadState, currGamePadState;
        int x, y, w, h;
        int current;

        public Game1()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";

            // go to 1280 x 720
            graphics.PreferredBackBufferWidth = 1280;
            graphics.PreferredBackBufferHeight = 720;
        }


        protected override void Initialize()
        {
            // initial values
            x = 50;
            y = 50;
            w = 1180;
            h = 620;
            current = 0;

            base.Initialize();
        }


        protected override void LoadContent()
        {
            spriteBatch = new SpriteBatch(GraphicsDevice);
            spriteFont = Content.Load<SpriteFont>("SpriteFont1");

            // create my own white pixel
            textureWhite = new Texture2D(GraphicsDevice, 1, 1, 1, TextureUsage.None, SurfaceFormat.Color);
            textureWhite.SetData(new Color[] { Color.White });
        }


        protected override void UnloadContent()
        {
        }


        protected override void Update(GameTime gameTime)
        {
            prevGamePadState = currGamePadState;
            currGamePadState = GamePad.GetState(PlayerIndex.One);

            if (wasButtonPressed(Buttons.Back))
            {
                Exit();
            }

            if (wasButtonPressed(Buttons.DPadDown))
            {
                current++;
                if (current > 3) current = 3;
            }

            if (wasButtonPressed(Buttons.DPadUp))
            {
                current--;
                if (current < 0) current = 0;
            }

            if (wasButtonPressed(Buttons.DPadLeft))
            {
                if (current == 0) x--;
                if (current == 1) y--;
                if (current == 2) w--;
                if (current == 3) h--;
            }

            if (wasButtonPressed(Buttons.DPadRight))
            {
                if (current == 0) x++;
                if (current == 1) y++;
                if (current == 2) w++;
                if (current == 3) h++;
            }

            base.Update(gameTime);
        }


        private bool wasButtonPressed(Buttons button)
        {
            return (currGamePadState.IsButtonDown(button) && prevGamePadState.IsButtonUp(button));
        }


        protected override void Draw(GameTime gameTime)
        {
            GraphicsDevice.Clear(Color.CornflowerBlue);

            spriteBatch.Begin();

            spriteBatch.Draw(textureWhite, new Rectangle(x, y, w, h), Color.Red);
            spriteBatch.Draw(textureWhite, new Rectangle(x + 2, y + 2, w - 4, h - 4), Color.CornflowerBlue);

            int tx = 100;
            int ty = 80;
            int tyd = 44;

            String s = "x = " + x;
            Color c = Color.Black;
            if (current == 0) c = Color.Red;
            spriteBatch.DrawString(spriteFont, s, new Vector2(tx, ty), c);
            ty += tyd;

            s = "y = " + y;
            c = Color.Black;
            if (current == 1) c = Color.Red;
            spriteBatch.DrawString(spriteFont, s, new Vector2(tx, ty), c);
            ty += tyd;

            s = "w = " + w + " which is "+(w*100.0/1280.0)+"%";
            c = Color.Black;
            if (current == 2) c = Color.Red;
            spriteBatch.DrawString(spriteFont, s, new Vector2(tx, ty), c);
            ty += tyd;

            s = "h = " + h + " which is "+(h*100.0/720.0)+"%";;
            c = Color.Black;
            if (current == 3) c = Color.Red;
            spriteBatch.DrawString(spriteFont, s, new Vector2(tx, ty), c);
            ty += tyd;
            ty += tyd;
            ty += tyd;

            s = "DPad Up/Down to select a dimensional attribute.";
            spriteBatch.DrawString(spriteFont, s, new Vector2(tx, ty), Color.Black);
            ty += tyd;

            s = "DPad Left/Right to decrease/increase that attribute.";
            spriteBatch.DrawString(spriteFont, s, new Vector2(tx, ty), Color.Black);
            ty += tyd;

            s = "Get the red border to the edge of your TV screen";
            spriteBatch.DrawString(spriteFont, s, new Vector2(tx, ty), Color.Black);

            spriteBatch.End();

            base.Draw(gameTime);
        }
    }
}