using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

using Microsoft.Research.DynamicDataDisplay.Common.Palettes;

using System.Windows.Markup;

using Microsoft.Research.DynamicDataDisplay.Common.Auxiliary;

using System.Windows.Threading;

using System.Diagnostics;

using forms = System.Windows.Forms;

using Microsoft.Research.DynamicDataDisplay.Charts;



namespace Microsoft.Research.DynamicDataDisplay.Controls

{

	/// <summary>

	/// Interaction logic for DiscretePaletteEditor.xaml

	/// </summary>

	[ContentProperty("Palette")]

	public partial class DiscretePaletteEditor : UserControl

	{

		public DiscretePaletteEditor()

		{

			InitializeComponent();



			paletteControl.SetBinding(PaletteControl.PaletteProperty, new Binding("Palette") { Source = this });



			Loaded += new RoutedEventHandler(DiscretePaletteEditor_Loaded);

		}



		private void DiscretePaletteEditor_Loaded(object sender, RoutedEventArgs e)

		{

			plotter.Children.Remove(plotter.MouseNavigation);

			plotter.Children.Remove(plotter.KeyboardNavigation);

			plotter.Children.Remove(plotter.DefaultContextMenu);

		}



		#region Properties



		#region Palette property



		public DiscretePalette Palette

		{

			get { return (DiscretePalette)GetValue(PaletteProperty); }

			set { SetValue(PaletteProperty, value); }

		}



		public static readonly DependencyProperty PaletteProperty = DependencyProperty.Register(

		  "Palette",

		  typeof(DiscretePalette),

		  typeof(DiscretePaletteEditor),

		  new FrameworkPropertyMetadata(null, OnPaletteReplaced));



		private static void OnPaletteReplaced(DependencyObject d, DependencyPropertyChangedEventArgs e)

		{

			DiscretePaletteEditor owner = (DiscretePaletteEditor)d;

			owner.OnPaletteReplaced();

		}



		private void OnPaletteReplaced()

		{

			RebuildSplitters();

		}



		#endregion



		#region Index attached DP



		public static int GetIndex(DependencyObject obj)

		{

			return (int)obj.GetValue(IndexProperty);

		}



		public static void SetIndex(DependencyObject obj, int value)

		{

			obj.SetValue(IndexProperty, value);

		}



		public static readonly DependencyProperty IndexProperty = DependencyProperty.RegisterAttached(

		  "Index",

		  typeof(int),

		  typeof(DiscretePaletteEditor),

		  new FrameworkPropertyMetadata(0));



		#endregion Index attached DP



		#endregion Properties



		private readonly List<PaletteThumb> thumbs = new List<PaletteThumb>();

		private void RebuildSplitters()

		{

			plotter.Children.RemoveAll<PaletteThumb>();

			hostPanel.Children.Clear();



			if (Palette == null) return;



			var palette = Palette;

			int count = palette.Steps.Count;



			int counter = 0;



			// adding thumbs

			foreach (var colorStep in palette.Steps.Take(count - 1))

			{

				PaletteThumb thumb = new PaletteThumb { Position = new Point(colorStep.Offset, 0.5) };

				SetIndex(thumb, counter);

				thumb.PositionChanged += new EventHandler<Charts.PositionChangedEventArgs>(thumb_PositionChanged);

				counter++;



				thumbs.Add(thumb);

				plotter.Children.Add(thumb);

			}



			// adding space between thumbs

			double prevOffset = 0;

			foreach (var colorStep in palette.Steps)

			{

				Rectangle rect = new Rectangle { Fill = Brushes.Transparent };

				Rect bounds = new Rect(prevOffset, 0, colorStep.Offset, 1);

				ViewportPanel.SetViewportBounds(rect, bounds);



				hostPanel.Children.Add(rect);



				prevOffset = colorStep.Offset;

			}

		}



		void thumb_PositionChanged(object sender, PositionChangedEventArgs e)

		{

			int index = GetIndex((DependencyObject)sender);

			UpdatePaletteView(index);

		}



		private void UpdatePaletteView(int index)

		{

			DiscretePalette palette = new DiscretePalette();



			Palette.Steps[index].Offset = thumbs[index].Position.X;

			foreach (var colorStep in Palette.Steps)

			{

				palette.Steps.Add(new LinearPaletteColorStep(colorStep.Color, colorStep.Offset));

			}



			paletteControl.Palette = palette;

		}



		//    private ContextMenu BuildContextMenu() {

		//        ContextMenu menu = new ContextMenu();

		//            MenuItem changeColorMenuItem = new MenuItem { Header = Properties.Resources.PaletteEditor_ChangeColor, Tag = rect };

		//            changeColorMenuItem.Click += (s, e) =>

		//            {

		//                int index = GetIndexFromTag(s);

		//                forms.ColorDialog dialog = new forms.ColorDialog();

		//                if (dialog.ShowDialog() == forms.DialogResult.OK)

		//                {

		//                    var c = dialog.Color;

		//                    Color wpfColor = Color.FromRgb(c.R, c.G, c.B);

		//                    Palette.Steps[index / 2].Color = wpfColor;

		//                    UpdatePaletteLook();

		//                }

		//            };

		//            menu.Items.Add(changeColorMenuItem);



		//            MenuItem deleteColorMenuItem = new MenuItem { Header = Properties.Resources.PaletteEditor_DeleteColor, Tag = rect };

		//            deleteColorMenuItem.Click += (s, e) =>

		//            {

		//                int index = GetIndexFromTag(s);



		//                Palette.Steps.RemoveAt(index / 2);

		//                RebuildSplitters();

		//                UpdatePaletteLook();

		//            };

		//            menu.Items.Add(deleteColorMenuItem);



		//            MenuItem addColorMenuItem = new MenuItem { Header = Properties.Resources.PaletteEditor_AddColor, Tag = rect };

		//            addColorMenuItem.Click += (s, e) =>

		//            {

		//                var x = Mouse.GetPosition(splitterGrid).X;

		//                var ratio = x / (ActualWidth);

		//                int insertIndex = Palette.Steps.Select((step, i) => new { Offset = step.Offset, Index = i }).First(step => step.Offset > ratio).Index;



		//                forms.ColorDialog dialog = new forms.ColorDialog();

		//                if (dialog.ShowDialog() == forms.DialogResult.OK)

		//                {

		//                    var c = dialog.Color;

		//                    Color wpfColor = Color.FromRgb(c.R, c.G, c.B);

		//                    Palette.Steps.Insert(insertIndex, new LinearPaletteColorStep(wpfColor, ratio));

		//                }

		//    }





		//const int splitterWidth = 3;

		//private void RebuildSplitters()

		//{

		//    splitterGrid.ColumnDefinitions.Clear();

		//    splitterGrid.Children.Clear();



		//    int rectColumnIndex = 0;

		//    foreach (var step in Palette.Steps)

		//    {

		//        double width = step.Offset;

		//        if (rectColumnIndex > 1)

		//            width = Palette.Steps[rectColumnIndex / 2].Offset - Palette.Steps[rectColumnIndex / 2 - 1].Offset;



		//        rectColumnIndex = AddColumn(rectColumnIndex, width);



		//        ColumnDefinition splitterColumn = new ColumnDefinition { Width = new GridLength(splitterWidth) };

		//        splitterGrid.ColumnDefinitions.Add(splitterColumn);

		//        GridSplitter splitter = new GridSplitter

		//        {

		//            Width = splitterWidth,

		//            VerticalAlignment = VerticalAlignment.Stretch,

		//            HorizontalAlignment = HorizontalAlignment.Center,

		//            Background = Brushes.DarkGray,

		//            ToolTip = Properties.Resources.PaletteEditor_DragToChangeOffset

		//        };

		//        Grid.SetColumn(splitter, rectColumnIndex);

		//        rectColumnIndex++;

		//        splitterGrid.Children.Add(splitter);

		//    }



		//    AddColumn(rectColumnIndex, 1.0 - Palette.Steps[Palette.Steps.Count - 1].Offset);

		//}



		//private int AddColumn(int rectColumnIndex, double width)

		//{

		//    Rectangle rect = new Rectangle

		//    {

		//        Stretch = Stretch.Fill,

		//        Fill = Brushes.Transparent,

		//        Tag = rectColumnIndex

		//    };



		//    ContextMenu menu = new ContextMenu();

		//    MenuItem changeColorMenuItem = new MenuItem { Header = Properties.Resources.PaletteEditor_ChangeColor, Tag = rect };

		//    changeColorMenuItem.Click += (s, e) =>

		//    {

		//        int index = GetIndexFromTag(s);

		//        forms.ColorDialog dialog = new forms.ColorDialog();

		//        if (dialog.ShowDialog() == forms.DialogResult.OK)

		//        {

		//            var c = dialog.Color;

		//            Color wpfColor = Color.FromRgb(c.R, c.G, c.B);

		//            Palette.Steps[index / 2].Color = wpfColor;

		//            UpdatePaletteLook();

		//        }

		//    };

		//    menu.Items.Add(changeColorMenuItem);



		//    MenuItem deleteColorMenuItem = new MenuItem { Header = Properties.Resources.PaletteEditor_DeleteColor, Tag = rect };

		//    deleteColorMenuItem.Click += (s, e) =>

		//    {

		//        int index = GetIndexFromTag(s);



		//        Palette.Steps.RemoveAt(index / 2);

		//        RebuildSplitters();

		//        UpdatePaletteLook();

		//    };

		//    menu.Items.Add(deleteColorMenuItem);



		//    MenuItem addColorMenuItem = new MenuItem { Header = Properties.Resources.PaletteEditor_AddColor, Tag = rect };

		//    addColorMenuItem.Click += (s, e) =>

		//    {

		//        var x = Mouse.GetPosition(splitterGrid).X;

		//        var ratio = x / (ActualWidth);

		//        int insertIndex = Palette.Steps.Select((step, i) => new { Offset = step.Offset, Index = i }).First(step => step.Offset > ratio).Index;



		//        forms.ColorDialog dialog = new forms.ColorDialog();

		//        if (dialog.ShowDialog() == forms.DialogResult.OK)

		//        {

		//            var c = dialog.Color;

		//            Color wpfColor = Color.FromRgb(c.R, c.G, c.B);

		//            Palette.Steps.Insert(insertIndex, new LinearPaletteColorStep(wpfColor, ratio));

		//        }



		//        RebuildSplitters();

		//        UpdatePaletteLook();

		//    };

		//    menu.Items.Add(addColorMenuItem);



		//    ColumnDefinition stepColumn = new ColumnDefinition { Width = new GridLength(width, GridUnitType.Star) };

		//    splitterGrid.ColumnDefinitions.Add(stepColumn);



		//    rect.ContextMenu = menu;



		//    Dispatcher.BeginInvoke(() => rect.SizeChanged += new SizeChangedEventHandler(rect_SizeChanged), DispatcherPriority.Background);



		//    Grid.SetColumn(rect, rectColumnIndex);

		//    splitterGrid.Children.Add(rect);

		//    rectColumnIndex++;

		//    return rectColumnIndex;

		//}



		//private static int GetIndexFromTag(object s)

		//{

		//    FrameworkElement owner = (FrameworkElement)((FrameworkElement)s).Tag;

		//    int index = (int)owner.Tag;



		//    return index;

		//}



		//private void rect_SizeChanged(object sender, SizeChangedEventArgs e)

		//{

		//    Rectangle rect = (Rectangle)sender;

		//    int index = (int)rect.Tag;

		//    index /= 2;

		//    if (index < Palette.Steps.Count)

		//    {

		//        double width = rect.ActualWidth / splitterGrid.ActualWidth;



		//        if (index > 0)

		//            width += Palette.Steps[index - 1].Offset;



		//        Palette.Steps[index].Offset = width;

		//    }



		//    UpdatePaletteLook();

		//}



		//private void UpdatePaletteLook()

		//{

		//    DiscretePalette palette = new DiscretePalette();

		//    palette.EndColor = Palette.EndColor;



		//    double offset = 0;

		//    for (int i = 0; i < Palette.Steps.Count; i++)

		//    {

		//        offset += splitterGrid.ColumnDefinitions[2 * i].Width.Value / (ActualWidth - Palette.Steps.Count * splitterWidth);

		//        palette.Steps.Add(new LinearPaletteColorStep(Palette.Steps[i].Color, offset));

		//    }



		//    paletteControl.Palette = palette;

		//}

	}

}