using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;



namespace Psychlops
{

	public class Canvas : Drawable
	{
		public static System.Windows.Controls.Image default_buffer_frame;
		public static System.Windows.Controls.UserControl default_panel;
		public static System.Windows.Controls.Canvas default_api_canvas;
		public static WriteableBitmap default_buffer;
		System.Windows.Controls.Image instance;
		System.Windows.Controls.Canvas api_canvas;
		System.Windows.Controls.UserControl panel;
		WriteableBitmap buffer;
		System.Windows.Shapes.Rectangle back_panel;
		System.Windows.Media.SolidColorBrush back_panel_color;

		public Canvas(int wid, int hei)
		{
			panel = default_panel;
			api_canvas = default_api_canvas;
			instance = default_buffer_frame;
			initialize(wid, hei);
		}
		public Canvas(int wid, int hei, System.Windows.Controls.Image target, System.Windows.Controls.Canvas apicnvs,  System.Windows.Controls.UserControl system)
		{
			panel = system;
			api_canvas = apicnvs;
			instance = target;
			initialize(wid, hei);
		}
		protected void initialize(int wid, int hei)
		{
			instance.Width = wid;
			instance.Height = hei;
			instance.Source = buffer;
			api_canvas.Width = wid;
			api_canvas.Height = hei;
			buffer = new WriteableBitmap((int)instance.Width, (int)instance.Height);
			api_canvas.MouseMove += Mouse.Canvas_MousePos;
			api_canvas.MouseLeftButtonDown += Mouse.Canvas_LDown;
			api_canvas.MouseLeftButtonUp += Mouse.Canvas_LUp;
			api_canvas.MouseWheel += Mouse.Canvas_MouseWheel;
			Mouse._prime = api_canvas;
			Main.drawable = this;
			default_buffer = buffer;

			back_panel = new System.Windows.Shapes.Rectangle();
			back_panel.Width = wid;
			back_panel.Height = hei;
			back_panel_color = new SolidColorBrush();
			back_panel.Fill = back_panel_color;
		}
		public Point getCenter()
		{
			return new Point(instance.Width/2.0, instance.Height/2.0, 0);
		}

		public void clear()
		{
			buffer.Clear(Color.black);
		}
		public void clear(Color col)
		{
			api_canvas.Children.Clear();
			back_panel_color.Color = col;
			api_canvas.Children.Add(back_panel);
			//buffer.Clear(col);
		}

		public void pix(int x, int y, Color col)
		{
			buffer.SetPixel(x, y, col);
		}

		static System.Windows.Shapes.Line api_line;
		static System.Windows.Shapes.Path api_curve;
		static System.Windows.Shapes.Rectangle api_rect;
		static System.Windows.Shapes.Ellipse api_ellipse;
		static System.Windows.Shapes.Polygon api_polygon;
		static System.Windows.Shapes.Polyline api_polyline;
		static System.Windows.Media.Color api_color;
		static System.Windows.Media.SolidColorBrush api_fill;
		static System.Windows.Media.SolidColorBrush api_stroke;
		static System.Windows.Media.TranslateTransform api_translation;
		static Canvas()
		{
			api_line     = new System.Windows.Shapes.Line();
			api_curve    = new System.Windows.Shapes.Path();
			api_rect     = new System.Windows.Shapes.Rectangle();
			api_ellipse  = new System.Windows.Shapes.Ellipse();
			api_polygon  = new System.Windows.Shapes.Polygon();
			api_polyline = new System.Windows.Shapes.Polyline();
			api_color       = new System.Windows.Media.Color();
			api_fill        = new System.Windows.Media.SolidColorBrush();
			api_stroke      = new System.Windows.Media.SolidColorBrush();
			api_translation = new System.Windows.Media.TranslateTransform();
		}

		public void line(Line drawee, Color col)
		{
			//buffer.DrawLine((int)drawee.begin.x, (int)drawee.begin.y, (int)drawee.end.x, (int)drawee.end.y, col);
			var zapi_shape = new System.Windows.Shapes.Line();
			var zapi_fill = new System.Windows.Media.SolidColorBrush();
			zapi_shape.X1 = (int)drawee.begin.x;
			zapi_shape.Y1 = (int)drawee.begin.y;
			zapi_shape.X2 = (int)drawee.end.x;
			zapi_shape.Y2 = (int)drawee.end.y;
			zapi_fill.Color = col;
			zapi_fill.Opacity = 1.0;
			zapi_shape.Stroke = zapi_fill;
			zapi_shape.StrokeThickness = 1;
			api_canvas.Children.Add(zapi_shape);
			//System.Windows.Controls.Canvas.SetLeft(zapi_shape, drawee.left);
			//System.Windows.Controls.Canvas.SetTop(zapi_shape, drawee.top);
		}
		public void rect(Rectangle drawee, Color col)
		{
			//buffer.DrawRectangle((int)drawee.v1.x, (int)drawee.v1.y, (int)drawee.v2.x, (int)drawee.v2.y, col);

			var zapi_shape = new System.Windows.Shapes.Rectangle();
			var zapi_fill = new System.Windows.Media.SolidColorBrush();
			zapi_shape.Width = drawee.width;
			zapi_shape.Height = drawee.height;
			zapi_fill.Color = col;
			zapi_shape.Fill = zapi_fill;
			api_canvas.Children.Add(zapi_shape);
			System.Windows.Controls.Canvas.SetLeft(zapi_shape, drawee.left);
			System.Windows.Controls.Canvas.SetTop(zapi_shape, drawee.top);
		}
		public void ellipse(Ellipse drawee, Color col)
		{
			//buffer.DrawEllipse((int)(drawee.datum.x - drawee.xdiameter / 2), (int)(drawee.datum.y - drawee.ydiameter / 2), (int)(drawee.datum.x + drawee.xdiameter / 2), (int)(drawee.datum.y + drawee.ydiameter / 2), col);

			var zapi_shape = new System.Windows.Shapes.Ellipse();
			var zapi_fill = new System.Windows.Media.SolidColorBrush();
			zapi_shape.Width = drawee.width;
			zapi_shape.Height = drawee.height;
			zapi_fill.Color = col;
			zapi_shape.Fill = zapi_fill;
			api_canvas.Children.Add(zapi_shape);
			System.Windows.Controls.Canvas.SetLeft(zapi_shape, drawee.left);
			System.Windows.Controls.Canvas.SetTop(zapi_shape, drawee.top);
		}
		public void polygon(Polygon drawee, Color col)
		{
			/*
			int[] ps = new int[drawee.vertices.Count];
			buffer.DrawPolyline(ps, col);
			*/
			var zapi_shape = new System.Windows.Shapes.Polygon();
			var zapi_fill = new System.Windows.Media.SolidColorBrush();
			int i = 0;
			foreach (Point p in drawee.vertices)
			{
				zapi_shape.Points.Add(p);
			}
			zapi_fill.Color = col;
			zapi_shape.Fill = zapi_fill;
			api_canvas.Children.Add(zapi_shape);
			System.Windows.Controls.Canvas.SetLeft(zapi_shape, drawee.datum.x);
			System.Windows.Controls.Canvas.SetTop(zapi_shape, drawee.datum.y);
		}
		public void letters(Letters drawee, Color col)
		{
			//var zapi_shape = new System.Windows.Documents.Glyphs();
			var zapi_shape = new System.Windows.Controls.TextBlock();
			var zapi_fill = new System.Windows.Media.SolidColorBrush();
			zapi_shape.MaxWidth = width;
			zapi_shape.MaxHeight = height;
			zapi_shape.Text = drawee.str;
			//zapi_shape.FontFamily = ;
			zapi_shape.FontSize = drawee.font.size;
			zapi_shape.FontStyle = drawee.font.style==Font.Style.normal_style ? System.Windows.FontStyles.Normal : System.Windows.FontStyles.Italic;
			zapi_shape.FontWeight = drawee.font.weight>400 ? System.Windows.FontWeights.Bold : System.Windows.FontWeights.Normal;
			zapi_shape.TextAlignment = drawee.align==Letters.HorizontalAlign.TEXT_ALIGN_LEFT ? TextAlignment.Left : TextAlignment.Center;
			zapi_fill.Color = col;
			zapi_shape.Foreground = zapi_fill;
			api_canvas.Children.Add(zapi_shape);
			System.Windows.Controls.Canvas.SetLeft(zapi_shape, drawee.datum.x);
			System.Windows.Controls.Canvas.SetTop(zapi_shape, drawee.datum.y);
		}
		public void image(Image drawee)
		{
			//buffer.Blit(drawee.datum, drawee.buffer, drawee.self_rect, Colors.White, WriteableBitmapExtensions.BlendMode.None);
			var zapi_shape = new System.Windows.Controls.Image();
			zapi_shape.Source = drawee.buffer;
			api_canvas.Children.Add(zapi_shape);
			System.Windows.Controls.Canvas.SetLeft(zapi_shape, drawee.datum.x);
			System.Windows.Controls.Canvas.SetTop(zapi_shape, drawee.datum.y);
		}


		public int frame;
		public void flip()
		{
			buffer.Invalidate();
			frame++;
		}

		public double width { get { return api_canvas.Width; } }
		public double height { get { return api_canvas.Height; } }
	}


}