// --------------------------------------------------------------------------------------------------------------------
// <copyright file="TextLayer.cs" company="James South">
//   Copyright (c) James South.
//   Licensed under the Apache License, Version 2.0.
// </copyright>
// <summary>
//   Encapsulates the properties required to add a layer of text to an image.
// </summary>
// --------------------------------------------------------------------------------------------------------------------

namespace ImageProcessor.Imaging
{
    #region Using

    using System;
    using System.Drawing;
    #endregion

    /// <summary>
    /// Encapsulates the properties required to add a layer of text to an image.
    /// </summary>
    public class TextLayer
    {
        #region Fields
        /// <summary>
        /// The color to render the text.
        /// </summary>
        private Color textColor = Color.Black;

        /// <summary>
        /// The opacity at which to render the text.
        /// </summary>
        private int opacity = 100;

        /// <summary>
        /// The font style to render the text.
        /// </summary>
        private FontStyle fontStyle = FontStyle.Regular;

        /// <summary>
        /// The font size to render the text.
        /// </summary>
        private int fontSize = 48;

        /// <summary>
        /// The position to start creating the text from.
        /// </summary>
        private Point position = Point.Empty;
        #endregion

        #region Properties
        /// <summary>
        /// Gets or sets Text.
        /// </summary>
        public string Text { get; set; }

        /// <summary>
        /// Gets or sets the Color to render the font.
        /// <remarks>
        /// <para>Defaults to black.</para>
        /// </remarks>
        /// </summary>
        public Color TextColor
        {
            get { return this.textColor; }
            set { this.textColor = value; }
        }

        /// <summary>
        /// Gets or sets the name of the font.
        /// </summary>
        public string Font { get; set; }

        /// <summary>
        /// Gets or sets the size of the font in pixels.
        /// <remarks>
        /// <para>Defaults to 48 pixels.</para>
        /// </remarks>
        /// </summary>  
        public int FontSize
        {
            get { return this.fontSize; }
            set { this.fontSize = value; }
        }

        /// <summary>
        /// Gets or sets the FontStyle of the text layer.
        /// <remarks>
        /// <para>Defaults to regular.</para>
        /// </remarks>
        /// </summary>
        public FontStyle Style
        {
            get { return this.fontStyle; }
            set { this.fontStyle = value; }
        }

        /// <summary>
        /// Gets or sets the Opacity of the text layer.
        /// </summary>
        public int Opacity
        {
            get
            {
                int alpha = (int)Math.Ceiling((this.opacity / 100d) * 255);

                return alpha < 255 ? alpha : 255;
            }

            set
            {
                this.opacity = value;
            }
        }

        /// <summary>
        /// Gets or sets the Position of the text layer.
        /// </summary>
        public Point Position
        {
            get { return this.position; }
            set { this.position = value; }
        }

        /// <summary>
        /// Gets or sets a value indicating whether a DropShadow should be drawn.
        /// </summary>
        public bool DropShadow { get; set; }
        #endregion
    }
}