namespace OINA.Extender.Testharness
{
    using System;
    using System.Drawing;
    using System.Windows.Forms;
    using OINA.Extender.Controls.Styles;

    /// <summary>
    /// ImageViewerVisualSettings Form
    /// </summary>
    public partial class ImageViewerVisualSettings : Form
    {
        /// <summary>
        /// Gets or sets the color of ImageViewer background.
        /// </summary>
        public static Color BackgroundColor
        {
            get { return ColorConverter.Convert(ImageViewerStyle.BackgroundColor); }
            set { ImageViewerStyle.BackgroundColor = ColorConverter.Convert(value); }
        }

        /// <summary>
        /// Gets or sets the color of ImageViewer Heads and ScaleBar Foreground Color.
        /// </summary>
        public static Color ForegroundColor
        {
            get { return ColorConverter.Convert(ImageViewerStyle.ForegroundColor); }
            set { ImageViewerStyle.ForegroundColor = ColorConverter.Convert(value); }
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="ImageViewerVisualSettings"/> class.
        /// </summary>
        public ImageViewerVisualSettings()
        {
            this.InitializeComponent();
            this.InitializeComboBoxes();
            
            this.UpdateDisplay();

            this.cbBackgroundColor.SelectedValueChanged += this.OnBackgroundColorChanged;
            this.cbForegroundColor.SelectedValueChanged += this.OnForegroundColorChanged;
            this.cbHeaderFontSize.SelectedValueChanged += this.OnHeaderFontSizeChanged;
            this.cbHeaderFontFamily.SelectedValueChanged += this.OnHeaderFontFamilyChanged;
            this.cbScaleBarFontSize.SelectedValueChanged += this.OnScaleBarFontSizeChanged;
        }

        /// <summary>
        /// InitialComboBox
        /// </summary>  
        private void InitializeComboBoxes()
        {
            this.cbBackgroundColor.DataSource = ColorConverter.GetSystemDrawingColors();
            this.cbForegroundColor.DataSource = ColorConverter.GetSystemDrawingColors();

            this.cbHeaderFontFamily.DataSource = System.Windows.Media.Fonts.SystemFontFamilies;
            this.cbHeaderFontSize.DataSource = new[] { 12d, 14d, 16d, 18d };
            this.cbScaleBarFontSize.DataSource = new[] { 8d, 10d, 12d, 14d };
        }

        /// <summary>
        /// Handles the SelectedValueChanged event of the CbBackgroundColor control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void OnBackgroundColorChanged(object sender, EventArgs e)
        {
            if (this.cbBackgroundColor.SelectedValue != null)
            {
                BackgroundColor = (Color)this.cbBackgroundColor.SelectedValue;
                this.backgroundPanel.BackColor = BackgroundColor;
            }
        }

        /// <summary>
        /// Handles the SelectedValueChanged event of the cbForegroundColor control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void OnForegroundColorChanged(object sender, EventArgs e)
        {
            if (this.cbForegroundColor.SelectedValue != null)
            {
                ForegroundColor = (Color)this.cbForegroundColor.SelectedValue;
                this.foregroundColorPanel.BackColor = ForegroundColor;
            }
        }

        /// <summary>
        /// Handles the SelectedValueChanged event of the CbHeaderFontSize control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void OnHeaderFontSizeChanged(object sender, EventArgs e)
        {
            if (this.cbHeaderFontSize.SelectedValue != null)
            {
                ImageViewerStyle.HeaderFontSize = (double)this.cbHeaderFontSize.SelectedValue;
            }
        }

        /// <summary>
        /// Handles the SelectedValueChanged event of the CbHeaderFontFamily control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void OnHeaderFontFamilyChanged(object sender, EventArgs e)
        {
            if (this.cbHeaderFontFamily.SelectedValue != null)
            {
                ImageViewerStyle.HeaderFontFamily = this.cbHeaderFontFamily.SelectedValue as System.Windows.Media.FontFamily;
            }
        }

        /// <summary>
        /// Handles the SelectedValueChanged event of the CbScaleBarFontSize control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void OnScaleBarFontSizeChanged(object sender, EventArgs e)
        {
            if (this.cbScaleBarFontSize.SelectedValue != null)
            {
                ImageViewerStyle.ScaleBarFontSize = (double)this.cbScaleBarFontSize.SelectedValue;
            }
        }

        /// <summary>
        /// Handles the click event of the BtResetStyle button.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
        private void OnResetStyle(object sender, EventArgs e)
        {
            ImageViewerStyle.ResetStyles();

            this.UpdateDisplay();
        }

        /// <summary>
        /// Updates the display on loading or resetting styleres
        /// </summary>
        private void UpdateDisplay()
        {
            this.backgroundPanel.BackColor = BackgroundColor;
            this.foregroundColorPanel.BackColor = ForegroundColor;
            
            ColorConverter.PickColourComboItem(this.cbBackgroundColor, BackgroundColor);
            ColorConverter.PickColourComboItem(this.cbForegroundColor, ForegroundColor);

            this.cbHeaderFontFamily.SelectedIndex = -1;
            this.cbHeaderFontFamily.SelectedItem = ImageViewerStyle.HeaderFontFamily;

            this.cbHeaderFontSize.SelectedItem = ImageViewerStyle.HeaderFontSize;
            this.cbScaleBarFontSize.SelectedItem = ImageViewerStyle.ScaleBarFontSize;
        }
    }
}