source: 2015/26/MikkoL/JRPG/JRPG/JRPG/DialogBox.cs @ 6305

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Jypeli;

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;

public class DialogBox
{
    List<BetterLabel> Rows = new List<BetterLabel>();
    int rowCount = 0;
    public int MaxRowCount = 4;
    //public float LineSpacing = -5.0f;
    public double LineSpacing = 30;

    public BetterLabel TextLabelBase { get; set; }

    public Vector TextPosition { get; set; }
    public bool DrawTextBox = true;
    public bool DrawIconBox = true;
    public Image Icon;
    public Widget TextBox { get; set; }
    public Widget IconBox { get; set; }
    Widget _Icon { get; set; }

    public event Action OnExiting;
    public bool DestroyOnExit = true;
    public bool LoadControls = true;

    public DialogBox()
    {
        TextPosition = new Vector(-455, -224);

        TextBox = new Widget(Images.HUD.DialogBox.Width, Images.HUD.DialogBox.Height);
        TextBox.Image = Images.HUD.DialogBox;
        TextBox.Position = new Vector(-0.5, -265.5);

        IconBox = new Widget(Images.HUD.IconBox.Width, Images.HUD.IconBox.Height);
        IconBox.Image = Images.HUD.IconBox;
        IconBox.Position = new Vector(-396, -113);
    }

    public void WriteRow(string text)
    {
        if (rowCount < MaxRowCount)
        {
            BetterLabel TextRow = new BetterLabel(TextLabelBase.CurrentFont, Vector2.Zero, text, TextLabelBase.Alignment);
            TextRow.DrawTextBorders = TextLabelBase.DrawTextBorders;
            TextRow.BorderType = TextLabelBase.BorderType;
            TextRow.BorderSize = TextLabelBase.BorderSize;
            TextRow.TextColor = TextLabelBase.TextColor;
            TextRow.TextBorderColor = TextLabelBase.TextBorderColor;

            Rows.Add(TextRow);
        }
    }

    public void SetTextBase(SpriteFont Font, TextAlignment Alignment)
    {
        TextLabelBase = new BetterLabel(Font, Vector2.Zero, "null", Alignment);
        TextLabelBase.TextColor = Microsoft.Xna.Framework.Color.White;
    }


    public void DrawDialogBox()
    {
        JRPG.Game.ClearControls();

        if(DrawTextBox) JRPG.Game.Add(TextBox);
        if (DrawIconBox) JRPG.Game.Add(IconBox);
        if (Icon != null)
        {
            _Icon = new Widget(Icon.Width, Icon.Height);
            _Icon.Position = IconBox.Position;
            _Icon.Image = Icon;
            JRPG.Game.Add(_Icon);
        }

        for (int i = 0; i < Rows.Count; i++)
        {
            Rows[i].FontPosition = VectorConverter.JypeliVectorToXNA(TextPosition + (new Vector(0, -LineSpacing) * i));
            JRPG.Game.Add(Rows[i]);
        }

        LoadDialogBoxControlsKeyboard();
        LoadDialogBoxControlsXboxController();
    }

    void LoadDialogBoxControlsKeyboard()
    {
        JRPG.Game.Keyboard.Listen(Key.Z, ButtonState.Pressed, Exit, null);
        JRPG.Game.Keyboard.Listen(Key.X, ButtonState.Pressed, Exit, null);
        JRPG.Game.Keyboard.Listen(Key.Enter, ButtonState.Pressed, Exit, null);
        JRPG.Game.Keyboard.Listen(Key.Space, ButtonState.Pressed, Exit, null);
        JRPG.Game.Keyboard.Listen(Key.Escape, ButtonState.Pressed, Exit, null);
    }
    void LoadDialogBoxControlsXboxController()
    {
        JRPG.Game.ControllerOne.Listen(Button.A, ButtonState.Pressed, Exit, null);
        JRPG.Game.ControllerOne.Listen(Button.B, ButtonState.Pressed, Exit, null);
        JRPG.Game.ControllerOne.Listen(Button.Start, ButtonState.Pressed, Exit, null);
        JRPG.Game.ControllerOne.Listen(Button.Back, ButtonState.Pressed, Exit, null);
    }

    void Exit()
    {
        if (LoadControls)
        {
            JRPG.Game.LoadOWControlsKeyboard();
            JRPG.Game.LoadOWControlsXboxController();
        }

        if (OnExiting != null) OnExiting.Invoke();

        if(DestroyOnExit) Destroy();
    }

    public void Destroy()
    {
        TextBox.Destroy();
        IconBox.Destroy();
        if (_Icon != null) _Icon.Destroy();

        for (int i = 0; i < Rows.Count; i++)
        {
            Rows[i].Destroy();
        }
    }
}